diff --git a/.circleci/config.yml b/.circleci/config.yml
index b610ceeb2bb..4efc24c7ba1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,16 +1,135 @@
-version: 2
+version: 2.1
+commands: # a reusable command with parameters
+  command_build_and_test:
+    parameters:
+      nodeNo:
+        default: "0"
+        type: string
+    steps:
+      # Restore the dependency cache
+      - restore_cache:
+          keys:
+            # Default branch if not
+            - source-v2-{{ .Branch }}-{{ .Revision }}
+            - source-v2-{{ .Branch }}-
+            - source-v2-
+      # Machine Setup
+      #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
+      # The following `checkout` command checks out your code to your working directory. In 1.0 we did this implicitly. In 2.0 you can choose where in the course of a job your code should be checked out.
+      - checkout
+      # Prepare for artifact and test results  collection equivalent to how it was done on 1.0.
+      # In many cases you can simplify this from what is generated here.
+      # 'See docs on artifact collection here https://circleci.com/docs/2.0/artifacts/'
+      - run: mkdir -p $CIRCLE_ARTIFACTS $CIRCLE_TEST_REPORTS
+      # This is based on your 1.0 configuration file or project settings
+      - run:
+          command: sudo update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java; sudo update-alternatives --set javac /usr/lib/jvm/java-8-openjdk-amd64/bin/javac; echo -e "export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64" >> $BASH_ENV
+      - run:
+          command: 'sudo docker info >/dev/null 2>&1 || sudo service docker start; '
+      - run:
+          command: |-
+            printf '127.0.0.1       petstore.swagger.io
+            ' | sudo tee -a /etc/hosts
+      #    - run: docker pull openapitools/openapi-petstore
+      #    - run: docker run -d -e OPENAPI_BASE_PATH=/v3 -e DISABLE_API_KEY=1 -e DISABLE_OAUTH=1 -p 80:8080 openapitools/openapi-petstore
+      - run: docker pull swaggerapi/petstore
+      - run: docker run --name petstore.swagger -d -e SWAGGER_HOST=http://petstore.swagger.io -e SWAGGER_BASE_PATH=/v2 -p 80:8080 swaggerapi/petstore
+      - run: docker ps -a
+      - run: sleep 30
+      - run: cat /etc/hosts
+      # Test
+      - run: mvn --no-snapshot-updates --quiet clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+      - run:
+          name: "Setup custom environment variables"
+          command: echo 'export CIRCLE_NODE_INDEX="<<parameters.nodeNo>>"' >> $BASH_ENV
+      - run: ./CI/circle_parallel.sh
+      # Save dependency cache
+      - save_cache:
+          key: source-v2-{{ .Branch }}-{{ .Revision }}
+          paths:
+            # This is a broad list of cache paths to include many possible development environments
+            # You can probably delete some of these entries
+            - vendor/bundle
+            - ~/virtualenvs
+            - ~/.m2
+            - ~/.ivy2
+            - ~/.sbt
+            - ~/.bundle
+            - ~/.go_workspace
+            - ~/.gradle
+            - ~/.cache/bower
+            - ".git"
+            - ~/.stack
+            - /home/circleci/OpenAPITools/openapi-generator/samples/client/petstore/haskell-http-client/.stack-work
+            - ~/R
+      # save "default" cache using the key "source-v2-"
+      - save_cache:
+          key: source-v2-
+          paths:
+            # This is a broad list of cache paths to include many possible development environments
+            # You can probably delete some of these entries
+            - vendor/bundle
+            - ~/virtualenvs
+            - ~/.m2
+            - ~/.ivy2
+            - ~/.sbt
+            - ~/.bundle
+            - ~/.go_workspace
+            - ~/.gradle
+            - ~/.cache/bower
+            - ".git"
+            - ~/.stack
+            - /home/circleci/OpenAPITools/openapi-generator/samples/client/petstore/haskell-http-client/.stack-work
+            - ~/R
+      # Teardown
+      #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
+      # Save test results
+      - store_test_results:
+          path: /tmp/circleci-test-results
+      # Save artifacts
+      - store_artifacts:
+          path: /tmp/circleci-artifacts
+      - store_artifacts:
+          path: /tmp/circleci-test-results
+  command_docker_build_and_test:
+    parameters:
+      nodeNo:
+        default: "0"
+        type: string
+    steps:
+      # Machine Setup
+      #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
+      # The following `checkout` command checks out your code to your working directory. In 1.0 we did this implicitly. In 2.0 you can choose where in the course of a job your code should be checked out.
+      - checkout
+      # Prepare for artifact and test results  collection equivalent to how it was done on 1.0.
+      # In many cases you can simplify this from what is generated here.
+      # 'See docs on artifact collection here https://circleci.com/docs/2.0/artifacts/'
+      - run: mkdir -p $CIRCLE_ARTIFACTS $CIRCLE_TEST_REPORTS
+      # This is based on your 1.0 configuration file or project settings
+      #      - run:
+      #          command: sudo update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java; sudo update-alternatives --set javac /usr/lib/jvm/java-8-openjdk-amd64/bin/javac; echo -e "export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64" >> $BASH_ENV
+      #      - run:
+      # Test
+      #      - run: mvn --no-snapshot-updates --quiet clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+      - run:
+          name: "Setup custom environment variables"
+          command: echo 'export CIRCLE_NODE_INDEX="<<parameters.nodeNo>>"' >> $BASH_ENV
+      - run: ./CI/circle_parallel.sh
+      # Teardown
+      #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
+      # Save test results
+      - store_test_results:
+          path: /tmp/circleci-test-results
+      # Save artifacts
+      - store_artifacts:
+          path: /tmp/circleci-artifacts
+      - store_artifacts:
+          path: /tmp/circleci-test-results
 jobs:
-  build:
-    #    docker:
-    #      #- image: openapitools/openapi-generator
-    #      - image: swaggerapi/petstore
-    #        environment:
-    #          SWAGGER_HOST=http://petstore.swagger.io
-    #          SWAGGER_BASE_PATH=/v2
+  node0:
     machine:
       image: circleci/classic:latest
     working_directory: ~/OpenAPITools/openapi-generator
-    parallelism: 4
     shell: /bin/bash --login
     environment:
       CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
@@ -18,85 +137,68 @@ jobs:
       DOCKER_GENERATOR_IMAGE_NAME: openapitools/openapi-generator
       DOCKER_CODEGEN_CLI_IMAGE_NAME: openapitools/openapi-generator-cli
     steps:
-    # Restore the dependency cache
-    - restore_cache:
-        keys:
-        # Default branch if not
-        - source-v2-{{ .Branch }}-{{ .Revision }}
-        - source-v2-{{ .Branch }}-
-        - source-v2-
-    # Machine Setup
-    #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
-    # The following `checkout` command checks out your code to your working directory. In 1.0 we did this implicitly. In 2.0 you can choose where in the course of a job your code should be checked out.
-    - checkout
-    # Prepare for artifact and test results  collection equivalent to how it was done on 1.0.
-    # In many cases you can simplify this from what is generated here.
-    # 'See docs on artifact collection here https://circleci.com/docs/2.0/artifacts/'
-    - run: mkdir -p $CIRCLE_ARTIFACTS $CIRCLE_TEST_REPORTS
-    # This is based on your 1.0 configuration file or project settings
-    - run:
-        command: sudo update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java; sudo update-alternatives --set javac /usr/lib/jvm/java-8-openjdk-amd64/bin/javac; echo -e "export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64" >> $BASH_ENV
-    - run:
-        command: 'sudo docker info >/dev/null 2>&1 || sudo service docker start; '
-    - run:
-       command: |-
-         printf '127.0.0.1       petstore.swagger.io
-         ' | sudo tee -a /etc/hosts
-#    - run: docker pull openapitools/openapi-petstore
-#    - run: docker run -d -e OPENAPI_BASE_PATH=/v3 -e DISABLE_API_KEY=1 -e DISABLE_OAUTH=1 -p 80:8080 openapitools/openapi-petstore
-    - run: docker pull swaggerapi/petstore
-    - run: docker run --name petstore.swagger -d -e SWAGGER_HOST=http://petstore.swagger.io -e SWAGGER_BASE_PATH=/v2 -p 80:8080 swaggerapi/petstore
-    - run: docker ps -a
-    - run: sleep 30
-    - run: cat /etc/hosts
-    # Test
-    - run: mvn --no-snapshot-updates --quiet clean install -Dorg.slf4j.simpleLogger.defaultLogLevel=error
-    - run: ./CI/circle_parallel.sh 
-    # Save dependency cache
-    - save_cache:
-        key: source-v2-{{ .Branch }}-{{ .Revision }}
-        paths:
-        # This is a broad list of cache paths to include many possible development environments
-        # You can probably delete some of these entries
-        - vendor/bundle
-        - ~/virtualenvs
-        - ~/.m2
-        - ~/.ivy2
-        - ~/.sbt
-        - ~/.bundle
-        - ~/.go_workspace
-        - ~/.gradle
-        - ~/.cache/bower
-        - ".git"
-        - ~/.stack
-        - /home/circleci/OpenAPITools/openapi-generator/samples/client/petstore/haskell-http-client/.stack-work
-        - ~/R
-    # save "default" cache using the key "source-v2-"
-    - save_cache:
-        key: source-v2-
-        paths:
-        # This is a broad list of cache paths to include many possible development environments
-        # You can probably delete some of these entries
-        - vendor/bundle
-        - ~/virtualenvs
-        - ~/.m2
-        - ~/.ivy2
-        - ~/.sbt
-        - ~/.bundle
-        - ~/.go_workspace
-        - ~/.gradle
-        - ~/.cache/bower
-        - ".git"
-        - ~/.stack
-        - /home/circleci/OpenAPITools/openapi-generator/samples/client/petstore/haskell-http-client/.stack-work
-        - ~/R
-    # Teardown
-    #   If you break your build into multiple jobs with workflows, you will probably want to do the parts of this that are relevant in each
-    # Save test results
-    - store_test_results:
-        path: /tmp/circleci-test-results
-    # Save artifacts
-    - store_artifacts:
-        path: /tmp/circleci-artifacts
-    - store_artifacts:
-        path: /tmp/circleci-test-results
+      - command_build_and_test:
+          nodeNo: "0"
+  node1:
+    machine:
+      image: circleci/classic:latest
+    working_directory: ~/OpenAPITools/openapi-generator
+    shell: /bin/bash --login
+    environment:
+      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
+      CIRCLE_TEST_REPORTS: /tmp/circleci-test-results
+      DOCKER_GENERATOR_IMAGE_NAME: openapitools/openapi-generator
+      DOCKER_CODEGEN_CLI_IMAGE_NAME: openapitools/openapi-generator-cli
+    steps:
+      - command_build_and_test:
+          nodeNo: "1"
+  node2:
+    machine:
+      image: circleci/classic:latest
+    working_directory: ~/OpenAPITools/openapi-generator
+    shell: /bin/bash --login
+    environment:
+      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
+      CIRCLE_TEST_REPORTS: /tmp/circleci-test-results
+      DOCKER_GENERATOR_IMAGE_NAME: openapitools/openapi-generator
+      DOCKER_CODEGEN_CLI_IMAGE_NAME: openapitools/openapi-generator-cli
+    steps:
+      - command_build_and_test:
+          nodeNo: "2"
+  node3:
+    machine:
+      image: circleci/classic:latest
+    working_directory: ~/OpenAPITools/openapi-generator
+    shell: /bin/bash --login
+    environment:
+      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
+      CIRCLE_TEST_REPORTS: /tmp/circleci-test-results
+      DOCKER_GENERATOR_IMAGE_NAME: openapitools/openapi-generator
+      DOCKER_CODEGEN_CLI_IMAGE_NAME: openapitools/openapi-generator-cli
+    steps:
+      - checkout
+      - command_build_and_test:
+          nodeNo: "3"
+  node4:
+    docker:
+      - image: fkrull/multi-python
+    working_directory: ~/OpenAPITools/openapi-generator
+    shell: /bin/bash --login
+    environment:
+      CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
+      CIRCLE_TEST_REPORTS: /tmp/circleci-test-results
+      DOCKER_GENERATOR_IMAGE_NAME: openapitools/openapi-generator
+      DOCKER_CODEGEN_CLI_IMAGE_NAME: openapitools/openapi-generator-cli
+    steps:
+      - checkout
+      - command_docker_build_and_test:
+          nodeNo: "4"
+workflows:
+  version: 2
+  build:
+    jobs:
+      - node0
+      - node1
+      - node2
+      - node3
+      - node4
\ No newline at end of file
diff --git a/.github/.test/samples.json b/.github/.test/samples.json
index 3d25312fa1b..6272fb28cc6 100644
--- a/.github/.test/samples.json
+++ b/.github/.test/samples.json
@@ -710,18 +710,6 @@
         "Schema: MySQL"
       ]
     },
-    {
-      "input": "nancyfx-petstore-server-async.sh",
-      "matches": [
-        "Server: C-Sharp"
-      ]
-    },
-    {
-      "input": "nancyfx-petstore-server.sh",
-      "matches": [
-        "Server: C-Sharp"
-      ]
-    },
     {
       "input": "nodejs-petstore-google-cloud-functions.sh",
       "matches": [
diff --git a/.github/auto-labeler.yml b/.github/auto-labeler.yml
index 98e2ae377dd..6a4f6a18ce0 100644
--- a/.github/auto-labeler.yml
+++ b/.github/auto-labeler.yml
@@ -220,8 +220,6 @@ labels:
     'Server: C-Sharp':
       - '\s*?\[aspnetcore\]\s*?'
       - '\s*?-[gl] aspnetcore\s*?'
-      - '\s*?\[csharp-nancyfx\]\s*?'
-      - '\s*?-[gl] csharp-nancyfx\s*?'
     # 'Server: Ceylon': # TODO: REMOVE UNUSED LABEL
     'Server: Eiffel':
       - '\s*?\[eiffel(-.*)?-server\]\s*?'
diff --git a/.github/workflows/samples-kotlin.yaml b/.github/workflows/samples-kotlin.yaml
index 83d748e9f06..ce20f98a346 100644
--- a/.github/workflows/samples-kotlin.yaml
+++ b/.github/workflows/samples-kotlin.yaml
@@ -41,6 +41,7 @@ jobs:
           - samples/client/petstore/kotlin-string
           - samples/client/petstore/kotlin-threetenbp
           - samples/client/petstore/kotlin-uppercase-enum
+          - samples/client/petstore/kotlin-array-simple-string
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v2
diff --git a/.github/workflows/samples-spring.yaml b/.github/workflows/samples-spring.yaml
new file mode 100644
index 00000000000..d266c358482
--- /dev/null
+++ b/.github/workflows/samples-spring.yaml
@@ -0,0 +1,59 @@
+name: Samples Java Spring
+
+on:
+  push:
+    paths:
+      - 'samples/server/petstore/spring*/**'
+      - 'samples/openapi3/server/petstore/spring*/**'
+  pull_request:
+    paths:
+      - 'samples/server/petstore/spring*/**'
+      - 'samples/openapi3/server/petstore/spring*/**'
+jobs:
+  build:
+    name: Build Java Spring
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sample:
+          # clients
+          - samples/client/petstore/spring-cloud
+          - samples/openapi3/client/petstore/spring-cloud
+          - samples/client/petstore/spring-cloud-date-time
+          - samples/openapi3/client/petstore/spring-cloud-date-time
+          - samples/client/petstore/spring-stubs
+          - samples/openapi3/client/petstore/spring-stubs
+          # servers
+          - samples/server/petstore/spring-mvc
+          - samples/server/petstore/spring-mvc-default-value
+          - samples/server/petstore/spring-mvc-j8-async
+          - samples/server/petstore/spring-mvc-j8-localdatetime
+          - samples/server/petstore/springboot
+          - samples/openapi3/server/petstore/springboot
+          - samples/server/petstore/springboot-beanvalidation
+          - samples/server/petstore/springboot-useoptional
+          - samples/openapi3/server/petstore/springboot-useoptional
+          - samples/server/petstore/springboot-reactive
+          - samples/openapi3/server/petstore/springboot-reactive
+          - samples/server/petstore/springboot-implicitHeaders
+          - samples/openapi3/server/petstore/springboot-implicitHeaders
+          - samples/server/petstore/springboot-delegate
+          - samples/openapi3/server/petstore/springboot-delegate
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v2
+        with:
+          distribution: 'temurin'
+          java-version: 8
+      - name: Cache maven dependencies
+        uses: actions/cache@v2.1.7
+        env:
+          cache-name: maven-repository
+        with:
+          path: |
+            ~/.m2
+          key: ${{ runner.os }}-${{ github.job }}-${{ env.cache-name }}-${{ hashFiles('**/pom.xml') }}
+      - name: Build
+        working-directory: ${{ matrix.sample }}
+        run: mvn clean package
diff --git a/.gitignore b/.gitignore
index 8787a3b7702..f7a20948546 100644
--- a/.gitignore
+++ b/.gitignore
@@ -201,15 +201,11 @@ samples/server/petstore/aspnetcore/.vs/
 effective.pom
 
 # kotlin
-samples/client/petstore/kotlin/src/main/kotlin/test/
-samples/client/petstore/kotlin-threetenbp/build
-samples/client/petstore/kotlin-string/build
 samples/openapi3/client/petstore/kotlin/build
 samples/server/petstore/kotlin-server/ktor/build
 samples/server/petstore/kotlin-springboot/build
-samples/client/petstore/kotlin-multiplatform/build/
-samples/client/petstore/kotlin-okhttp3/build/
-\?
+samples/client/petstore/kotlin*/src/main/kotlin/test/
+samples/client/petstore/kotlin*/build/
 
 # haskell
 .stack-work
diff --git a/.mvn/wrapper/maven-wrapper.jar b/.mvn/wrapper/maven-wrapper.jar
old mode 100755
new mode 100644
index 2cc7d4a55c0..c1dd12f1764
Binary files a/.mvn/wrapper/maven-wrapper.jar and b/.mvn/wrapper/maven-wrapper.jar differ
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
index a9f1ef87bb2..8c79a83ae43 100755
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -1,2 +1,18 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.3/apache-maven-3.8.3-bin.zip
-wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.4/apache-maven-3.8.4-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar
diff --git a/CI/circle_parallel.sh b/CI/circle_parallel.sh
index 697009699a3..b6e2691121a 100755
--- a/CI/circle_parallel.sh
+++ b/CI/circle_parallel.sh
@@ -11,7 +11,9 @@ export NODE_ENV=test
 
 function cleanup {
   # Show logs of 'petstore.swagger' container to troubleshoot Unit Test failures, if any.
-  docker logs petstore.swagger # container name specified in circle.yml
+  if [ "$NODE_INDEX" != "4" ]; then
+    docker logs petstore.swagger # container name specified in circle.yml
+  fi
 }
 
 trap cleanup EXIT
@@ -59,8 +61,8 @@ elif [ "$NODE_INDEX" = "3" ]; then
   #sudo make altinstall
   pyenv install --list 
   pyenv install 3.6.3
+  pyenv install 2.7.14
   pyenv global 3.6.3
-  python3 --version
 
   # Install node@stable (for angular 6)
   set +e
@@ -79,6 +81,20 @@ elif [ "$NODE_INDEX" = "3" ]; then
 
   mvn --no-snapshot-updates --quiet verify -Psamples.circleci.node3 -Dorg.slf4j.simpleLogger.defaultLogLevel=error
 
+elif [ "$NODE_INDEX" = "4" ]; then
+
+  echo "Running node $NODE_INDEX to test 'samples.circleci.node4' defined in pom.xml ..."
+
+  # install maven and java so we can use them to run our tests
+  apt-get update && apt-get install -y default-jdk maven sudo
+  java -version
+  export JAVA_HOME=$(readlink -f /usr/bin/java | sed "s:bin/java::")
+  echo $JAVA_HOME
+  # show os version
+  uname -a
+
+  mvn --no-snapshot-updates --quiet verify -Psamples.circleci.node4 -Dorg.slf4j.simpleLogger.defaultLogLevel=error
+
 else
   echo "Running node $NODE_INDEX to test 'samples.circleci.others' defined in pom.xml ..."
   #sudo update-java-alternatives -s java-1.7.0-openjdk-amd64
diff --git a/README.md b/README.md
index f8b8df917ae..b66fcfa6fb9 100644
--- a/README.md
+++ b/README.md
@@ -68,8 +68,8 @@ OpenAPI Generator allows generation of API client libraries (SDK generation), se
 
 |                                  | Languages/Frameworks                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
 | -------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| **API clients**                  | **ActionScript**, **Ada**, **Apex**, **Bash**, **C**, **C#** (.net 2.0, 3.5 or later, .NET Standard 1.3 - 2.0, .NET Core 2.0, .NET 5.0. Libraries: RestSharp, HttpClient), **C++** (Arduino, cpp-restsdk, Qt5, Tizen, Unreal Engine 4), **Clojure**, **Crystal**, **Dart**, **Elixir**, **Elm**, **Eiffel**, **Erlang**, **Go**, **Groovy**, **Haskell** (http-client, Servant), **Java** (Apache HttpClient, Jersey1.x, Jersey2.x, OkHttp, Retrofit1.x, Retrofit2.x, Feign, RestTemplate, RESTEasy, Vertx, Google API Client Library for Java, Rest-assured, Spring 5 Web Client, MicroProfile Rest Client), **k6**, **Kotlin**, **Lua**, **Nim**, **Node.js/JavaScript** (ES5, ES6, AngularJS with Google Closure Compiler annotations, Flow types, Apollo GraphQL DataStore), **Objective-C**, **OCaml**, **Perl**, **PHP**, **PowerShell**, **Python**, **R**, **Ruby**, **Rust** (hyper, reqwest, rust-server), **Scala** (akka, http4s, scalaz, sttp, swagger-async-httpclient), **Swift** (2.x, 3.x, 4.x, 5.x), **Typescript** (AngularJS, Angular (2.x - 11.x), Aurelia, Axios, Fetch, Inversify, jQuery, Nestjs, Node, redux-query, Rxjs) |
-| **Server stubs**                 | **Ada**, **C#** (ASP.NET Core, NancyFx, Azure Functions), **C++** (Pistache, Restbed, Qt5 QHTTPEngine), **Erlang**, **F#** (Giraffe), **Go** (net/http, Gin, Echo), **Haskell** (Servant, Yesod), **Java** (MSF4J, Spring, Undertow, JAX-RS: CDI, CXF, Inflector, Jersey, RestEasy, Play Framework, [PKMST](https://github.com/ProKarma-Inc/pkmst-getting-started-examples), [Vert.x](https://vertx.io/)), **Kotlin** (Spring Boot, Ktor, Vertx), **PHP** (Laravel, Lumen, [Mezzio (fka Zend Expressive)](https://github.com/mezzio/mezzio), Slim, Silex, [Symfony](https://symfony.com/)), **Python** (FastAPI, Flask), **NodeJS**, **Ruby** (Sinatra, Rails5), **Rust** (rust-server), **Scala** (Akka, [Finch](https://github.com/finagle/finch), [Lagom](https://github.com/lagom/lagom), [Play](https://www.playframework.com/), Scalatra)                                                                                                                                                                                         |
+| **API clients**                  | **ActionScript**, **Ada**, **Apex**, **Bash**, **C**, **C#** (.net 2.0, 3.5 or later, .NET Standard 1.3 - 2.1, .NET Core 3.1, .NET 5.0. Libraries: RestSharp, GenericHost, HttpClient), **C++** (Arduino, cpp-restsdk, Qt5, Tizen, Unreal Engine 4), **Clojure**, **Crystal**, **Dart**, **Elixir**, **Elm**, **Eiffel**, **Erlang**, **Go**, **Groovy**, **Haskell** (http-client, Servant), **Java** (Apache HttpClient, Jersey1.x, Jersey2.x, OkHttp, Retrofit1.x, Retrofit2.x, Feign, RestTemplate, RESTEasy, Vertx, Google API Client Library for Java, Rest-assured, Spring 5 Web Client, MicroProfile Rest Client), **k6**, **Kotlin**, **Lua**, **Nim**, **Node.js/JavaScript** (ES5, ES6, AngularJS with Google Closure Compiler annotations, Flow types, Apollo GraphQL DataStore), **Objective-C**, **OCaml**, **Perl**, **PHP**, **PowerShell**, **Python**, **R**, **Ruby**, **Rust** (hyper, reqwest, rust-server), **Scala** (akka, http4s, scalaz, sttp, swagger-async-httpclient), **Swift** (2.x, 3.x, 4.x, 5.x), **Typescript** (AngularJS, Angular (2.x - 11.x), Aurelia, Axios, Fetch, Inversify, jQuery, Nestjs, Node, redux-query, Rxjs) |
+| **Server stubs**                 | **Ada**, **C#** (ASP.NET Core, NancyFx, Azure Functions), **C++** (Pistache, Restbed, Qt5 QHTTPEngine), **Erlang**, **F#** (Giraffe), **Go** (net/http, Gin, Echo), **Haskell** (Servant, Yesod), **Java** (MSF4J, Spring, Undertow, JAX-RS: CDI, CXF, Inflector, Jersey, RestEasy, Play Framework, [PKMST](https://github.com/ProKarma-Inc/pkmst-getting-started-examples), [Vert.x](https://vertx.io/), [Apache Camel](https://camel.apache.org/)), **Kotlin** (Spring Boot, Ktor, Vertx), **PHP** (Laravel, Lumen, [Mezzio (fka Zend Expressive)](https://github.com/mezzio/mezzio), Slim, Silex, [Symfony](https://symfony.com/)), **Python** (FastAPI, Flask), **NodeJS**, **Ruby** (Sinatra, Rails5), **Rust** (rust-server), **Scala** (Akka, [Finch](https://github.com/finagle/finch), [Lagom](https://github.com/lagom/lagom), [Play](https://www.playframework.com/), Scalatra)                                                                                                                                                                                         |
 | **API documentation generators** | **HTML**, **Confluence Wiki**, **Asciidoc**, **Markdown**, **PlantUML**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 | **Configuration files**          | [**Apache2**](https://httpd.apache.org/)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
 | **Others**                       | **GraphQL**, **JMeter**, **Ktorm**, **MySQL Schema**, **Protocol Buffer**, **WSDL**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
@@ -577,6 +577,7 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [ASKUL](https://www.askul.co.jp)
 - [Arduino](https://www.arduino.cc/)
 - [b<>com](https://b-com.com/en)
+- [百度营销](https://e.baidu.com)
 - [Banzai Cloud](https://banzaicloud.com)
 - [BIMData.io](https://bimdata.io)
 - [Bithost GmbH](https://www.bithost.ch)
@@ -626,6 +627,7 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - [Lumeris](https://www.lumeris.com)
 - [LVM Versicherungen](https://www.lvm.de)
 - [MailSlurp](https://www.mailslurp.com)
+- [Manticore Search](https://manticoresearch.com)
 - [Médiavision](https://www.mediavision.fr/)
 - [Metaswitch](https://www.metaswitch.com/)
 - [MoonVision](https://www.moonvision.io/)
@@ -852,10 +854,12 @@ OpenAPI Generator core team members are contributors who have been making signif
 * [@ackintosh](https://github.com/ackintosh) (2018/02) [:heart:](https://www.patreon.com/ackintosh/overview)
 * [@jmini](https://github.com/jmini) (2018/04)  [:heart:](https://www.patreon.com/jmini)
 * [@etherealjoy](https://github.com/etherealjoy) (2019/06)
-* [@spacether](https://github.com/spacether) (2020/05)
+* [@spacether](https://github.com/spacether) (2020/05) [:heart:][spacether sponsorship]
 
 :heart: = Link to support the contributor directly
 
+[spacether sponsorship]: https://github.com/sponsors/spacether/
+
 #### Template Creator
 
 **NOTE**: Embedded templates are only supported in _Mustache_ format. Support for all other formats is experimental and subject to change at any time.
@@ -918,7 +922,8 @@ Here is a list of template creators:
    * PHP (with Data Transfer): @Articus
    * PowerShell: @beatcracker
    * PowerShell (refactored in 5.0.0): @wing328
-   * Python: @spacether
+   * Python: @spacether [:heart:][spacether sponsorship]
+   * Python-Experimental: @spacether [:heart:][spacether sponsorship]
    * R: @ramnov
    * Ruby (Faraday): @meganemura @dkliban
    * Rust: @farcaller
@@ -960,6 +965,7 @@ Here is a list of template creators:
    * GraphQL Express Server: @renepardon
    * Haskell Servant: @algas
    * Haskell Yesod: @yotsuya
+   * Java Camel: @carnevalegiacomo
    * Java MSF4J: @sanjeewa-malalgoda
    * Java Spring Boot: @diyfr
    * Java Undertow: @stevehu
@@ -1046,6 +1052,7 @@ If you want to join the committee, please kindly apply by sending an email to te
 | C++               | @ravinikam (2017/07) @stkrwork (2017/07) @etherealjoy (2018/02) @martindelille (2018/03) @muttleyxd (2019/08)                                                                                                                     |
 | C#                | @mandrean (2017/08) @frankyjuang (2019/09) @shibayan (2020/02) @Blackclaws (2021/03) @lucamazzanti (2021/05)                                                                               |
 | Clojure           |                                                                                                                                                                                                                                   |
+| Crystal           | @cyangle (2021/01) |
 | Dart              | @jaumard (2018/09) @josh-burton (2019/12) @amondnet (2019/12) @sbu-WBT (2020/12) @kuhnroyal (2020/12) @agilob (2020/12) @ahmednfwela (2021/08)                                                                                                      |
 | Eiffel            | @jvelilla (2017/09)                                                                                                                                                                                                               |
 | Elixir            | @mrmstn (2018/12)                                                                                                                                                                                                                 |
@@ -1067,7 +1074,7 @@ If you want to join the committee, please kindly apply by sending an email to te
 | Perl              | @wing328 (2017/07) [:heart:](https://www.patreon.com/wing328) @yue9944882 (2019/06)                                                                                                                                               |
 | PHP               | @jebentier (2017/07), @dkarlovi (2017/07), @mandrean (2017/08), @jfastnacht (2017/09), @ackintosh (2017/09) [:heart:](https://www.patreon.com/ackintosh/overview), @ybelenko (2018/07), @renepardon (2018/12)                     |
 | PowerShell        | @wing328 (2020/05)                                                                                                                                                                                                                                  |
-| Python            | @taxpon (2017/07) @frol (2017/07) @mbohlool (2017/07) @cbornet (2017/09) @kenjones-cisco (2017/11) @tomplus (2018/10) @Jyhess (2019/01) @arun-nalla (2019/11) @spacether (2019/11)                                                |
+| Python            | @taxpon (2017/07) @frol (2017/07) @mbohlool (2017/07) @cbornet (2017/09) @kenjones-cisco (2017/11) @tomplus (2018/10) @Jyhess (2019/01) @arun-nalla (2019/11) @spacether (2019/11) [:heart:][spacether sponsorship]               |
 | R                 | @Ramanth (2019/07) @saigiridhar21 (2019/07)                                                                                                                                                                                       |
 | Ruby              | @cliffano (2017/07) @zlx (2017/09) @autopp (2019/02)                                                                                                                                                                             |
 | Rust              | @frol (2017/07) @farcaller (2017/08) @richardwhiuk (2019/07) @paladinzh (2020/05)                                                                                                                               |
diff --git a/bin/configs/other/avro-schema.yaml b/bin/configs/avro-schema.yaml
similarity index 100%
rename from bin/configs/other/avro-schema.yaml
rename to bin/configs/avro-schema.yaml
diff --git a/bin/configs/csharp-netcore-OpenAPIClientCore.yaml b/bin/configs/csharp-netcore-OpenAPIClientCore.yaml
index fbc12cef7e7..81c2ed9b0f1 100644
--- a/bin/configs/csharp-netcore-OpenAPIClientCore.yaml
+++ b/bin/configs/csharp-netcore-OpenAPIClientCore.yaml
@@ -4,5 +4,5 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/java/petstore-with-f
 templateDir: modules/openapi-generator/src/main/resources/csharp-netcore
 additionalProperties:
   packageGuid: '{321C8C3F-0156-40C1-AE42-D59761FB9B6C}'
-  targetFramework: netcoreapp2.0
+  targetFramework: netcoreapp3.1
   useCompareNetObjects: "true"
diff --git a/bin/configs/csharp-netcore-OpenAPIClientCoreAndNet47.yaml b/bin/configs/csharp-netcore-OpenAPIClientCoreAndNet47.yaml
index 58b30f42acb..45750b9f03e 100644
--- a/bin/configs/csharp-netcore-OpenAPIClientCoreAndNet47.yaml
+++ b/bin/configs/csharp-netcore-OpenAPIClientCoreAndNet47.yaml
@@ -4,5 +4,5 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/csharp-netcore
 additionalProperties:
   packageGuid: '{321C8C3F-0156-40C1-AE42-D59761FB9B6C}'
-  targetFramework: netstandard2.1;netcoreapp3.0
+  targetFramework: netstandard2.1;net47
   useCompareNetObjects: "true"
diff --git a/bin/configs/java-camel-petstore-new.yaml b/bin/configs/java-camel-petstore-new.yaml
new file mode 100644
index 00000000000..51f66553da7
--- /dev/null
+++ b/bin/configs/java-camel-petstore-new.yaml
@@ -0,0 +1,17 @@
+generatorName: java-camel
+outputDir: samples/server/petstore/java-camel
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/java-camel-server
+additionalProperties:
+  oas3: "true"
+  hideGenerationTimestamp: true
+  camelRestBindingMode: "auto"
+  performBeanValidation: true
+  #dateLibrary: "java8-localdatetime"
+  camelDataformatProperties: "json.out.disableFeatures=WRITE_DATES_AS_TIMESTAMPS"
+  library: "spring-boot"
+  withXml: true
+  jackson: true
+  camelUseDefaulValidationtErrorProcessor: true
+  camelRestClientRequestValidation: true
+  camelSecurityDefinitions: true
diff --git a/bin/configs/java-micronaut-client.yaml b/bin/configs/java-micronaut-client.yaml
index 31722943924..bf0720a6913 100644
--- a/bin/configs/java-micronaut-client.yaml
+++ b/bin/configs/java-micronaut-client.yaml
@@ -7,3 +7,4 @@ additionalProperties:
   configureAuth: "false"
   build: "all"
   test: "spock"
+  requiredPropertiesInConstructor: "false"
diff --git a/bin/configs/java-micronaut-server.yaml b/bin/configs/java-micronaut-server.yaml
new file mode 100644
index 00000000000..d0c4df9ac5e
--- /dev/null
+++ b/bin/configs/java-micronaut-server.yaml
@@ -0,0 +1,10 @@
+generatorName: java-micronaut-server
+outputDir: samples/server/petstore/java-micronaut-server/
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+additionalProperties:
+  artifactId: petstore-micronaut-server
+  hideGenerationTimestamp: "true"
+  build: "all"
+  test: "spock"
+  requiredPropertiesInConstructor: "true"
+  useAuth: "false"
diff --git a/bin/configs/kotlin-array-simple-string.yaml b/bin/configs/kotlin-array-simple-string.yaml
new file mode 100644
index 00000000000..68cbd8c42ff
--- /dev/null
+++ b/bin/configs/kotlin-array-simple-string.yaml
@@ -0,0 +1,6 @@
+generatorName: kotlin
+outputDir: samples/client/petstore/kotlin-array-simple-string
+inputSpec: modules/openapi-generator/src/test/resources/3_0/issue_7199_array_simple_string.yaml
+templateDir: modules/openapi-generator/src/main/resources/kotlin-client
+additionalProperties:
+  artifactId: kotlin-array-simple-string
diff --git a/bin/configs/kotlin-server-jaxrs-spec.yaml b/bin/configs/kotlin-server-jaxrs-spec.yaml
new file mode 100644
index 00000000000..11d4fcec7a8
--- /dev/null
+++ b/bin/configs/kotlin-server-jaxrs-spec.yaml
@@ -0,0 +1,7 @@
+generatorName: kotlin-server
+outputDir: samples/server/petstore/kotlin-server/jaxrs-spec
+library: jaxrs-spec
+inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/kotlin-server
+additionalProperties:
+  useCoroutines: "true"
diff --git a/bin/configs/other/csharp-nancyfx-nancyfx-async.yaml b/bin/configs/other/csharp-nancyfx-nancyfx-async.yaml
deleted file mode 100644
index ae5e4671753..00000000000
--- a/bin/configs/other/csharp-nancyfx-nancyfx-async.yaml
+++ /dev/null
@@ -1,7 +0,0 @@
-generatorName: csharp-nancyfx
-outputDir: samples/server/petstore/nancyfx-async
-inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
-templateDir: modules/openapi-generator/src/main/resources/csharp-nancyfx
-additionalProperties:
-  asyncServer: "true"
-  packageGuid: '{768B8DC6-54EE-4D40-9B20-7857E1D742A4}'
diff --git a/bin/configs/other/csharp-nancyfx-nancyfx.yaml b/bin/configs/other/csharp-nancyfx-nancyfx.yaml
deleted file mode 100644
index 5fd6cdffafe..00000000000
--- a/bin/configs/other/csharp-nancyfx-nancyfx.yaml
+++ /dev/null
@@ -1,7 +0,0 @@
-generatorName: csharp-nancyfx
-outputDir: samples/server/petstore/nancyfx
-inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
-templateDir: modules/openapi-generator/src/main/resources/csharp-nancyfx
-additionalProperties:
-  asyncServer: "false"
-  packageGuid: '{768B8DC6-54EE-4D40-9B20-7857E1D742A4}'
diff --git a/bin/configs/python-experimental.yaml b/bin/configs/python-experimental.yaml
new file mode 100644
index 00000000000..dd204f44938
--- /dev/null
+++ b/bin/configs/python-experimental.yaml
@@ -0,0 +1,7 @@
+generatorName: python-experimental
+outputDir: samples/openapi3/client/petstore/python-experimental
+inputSpec: modules/openapi-generator/src/test/resources/3_0/python-experimental/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
+templateDir: modules/openapi-generator/src/main/resources/python-experimental
+additionalProperties:
+  packageName: petstore_api
+  recursionLimit: "1234"
diff --git a/bin/configs/spring-boot-beanvalidation-no-nullable-oas3.yaml b/bin/configs/spring-boot-beanvalidation-no-nullable-oas3.yaml
index 760305ec6cb..b1e5245ae85 100644
--- a/bin/configs/spring-boot-beanvalidation-no-nullable-oas3.yaml
+++ b/bin/configs/spring-boot-beanvalidation-no-nullable-oas3.yaml
@@ -5,7 +5,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
-  oas3: "true"
+  documentationProvider: springdoc
   java8: "false"
   useBeanValidation: true
   artifactId: spring-boot-beanvalidation-no-nullable
diff --git a/bin/configs/spring-boot-beanvalidation-no-nullable.yaml b/bin/configs/spring-boot-beanvalidation-no-nullable.yaml
index 85c687f4978..1457469bc72 100644
--- a/bin/configs/spring-boot-beanvalidation-no-nullable.yaml
+++ b/bin/configs/spring-boot-beanvalidation-no-nullable.yaml
@@ -4,6 +4,7 @@ library: spring-boot
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   java8: "false"
   useBeanValidation: true
   artifactId: spring-boot-beanvalidation-no-nullable
diff --git a/bin/configs/spring-boot-beanvalidation.yaml b/bin/configs/spring-boot-beanvalidation.yaml
index 573d8e283b5..dd4ea561c84 100644
--- a/bin/configs/spring-boot-beanvalidation.yaml
+++ b/bin/configs/spring-boot-beanvalidation.yaml
@@ -4,6 +4,7 @@ library: spring-boot
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   java8: true
   useBeanValidation: true
   artifactId: spring-boot-beanvalidation
diff --git a/bin/configs/spring-boot-delegate-j8.yaml b/bin/configs/spring-boot-delegate-j8.yaml
index a90e8b3ce1d..e1fae5805cd 100644
--- a/bin/configs/spring-boot-delegate-j8.yaml
+++ b/bin/configs/spring-boot-delegate-j8.yaml
@@ -3,6 +3,7 @@ outputDir: samples/server/petstore/springboot-delegate-j8
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot-delegate-j8
   hideGenerationTimestamp: "true"
   delegatePattern: "true"
diff --git a/bin/configs/spring-boot-delegate-oas3.yaml b/bin/configs/spring-boot-delegate-oas3.yaml
index 7d8631523d8..8b604d558a9 100644
--- a/bin/configs/spring-boot-delegate-oas3.yaml
+++ b/bin/configs/spring-boot-delegate-oas3.yaml
@@ -4,7 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
-  oas3: "true"
+  documentationProvider: springdoc
   artifactId: springboot-delegate
   hideGenerationTimestamp: "true"
   java8: true
diff --git a/bin/configs/spring-boot-delegate.yaml b/bin/configs/spring-boot-delegate.yaml
index 162094128db..228b14d823e 100644
--- a/bin/configs/spring-boot-delegate.yaml
+++ b/bin/configs/spring-boot-delegate.yaml
@@ -3,6 +3,7 @@ outputDir: samples/server/petstore/springboot-delegate
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot-delegate
   hideGenerationTimestamp: "true"
   java8: true
diff --git a/bin/configs/spring-boot-implicitHeaders-oas3.yaml b/bin/configs/spring-boot-implicitHeaders-oas3.yaml
index 973561fad57..3d9423cd326 100644
--- a/bin/configs/spring-boot-implicitHeaders-oas3.yaml
+++ b/bin/configs/spring-boot-implicitHeaders-oas3.yaml
@@ -4,6 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
   oas3: "true"
   artifactId: springboot-implicitHeaders
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-boot-implicitHeaders.yaml b/bin/configs/spring-boot-implicitHeaders.yaml
index cb84abe664d..5457e89b831 100644
--- a/bin/configs/spring-boot-implicitHeaders.yaml
+++ b/bin/configs/spring-boot-implicitHeaders.yaml
@@ -4,5 +4,6 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   artifactId: springboot-implicitHeaders
+  documentationProvider: springfox
   hideGenerationTimestamp: "true"
   implicitHeaders: true
diff --git a/bin/configs/spring-boot-oas3.yaml b/bin/configs/spring-boot-oas3.yaml
index 9a0f864b271..21994a14ad4 100644
--- a/bin/configs/spring-boot-oas3.yaml
+++ b/bin/configs/spring-boot-oas3.yaml
@@ -4,7 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
   artifactId: springboot
   snapshotVersion: "true"
-  oas3: "true"
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-boot-reactive-oas3.yaml b/bin/configs/spring-boot-reactive-oas3.yaml
index b3fc8278491..3e3fb91657b 100644
--- a/bin/configs/spring-boot-reactive-oas3.yaml
+++ b/bin/configs/spring-boot-reactive-oas3.yaml
@@ -4,7 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
-  oas3: "true"
+  documentationProvider: springdoc
   artifactId: springboot-reactive
   reactive: "true"
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-boot-reactive.yaml b/bin/configs/spring-boot-reactive.yaml
index 3d0c92edbee..b3edff7de11 100644
--- a/bin/configs/spring-boot-reactive.yaml
+++ b/bin/configs/spring-boot-reactive.yaml
@@ -4,6 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   artifactId: springboot-reactive
+  documentationProvider: springfox
   reactive: "true"
   hideGenerationTimestamp: "true"
   delegatePattern: "true"
diff --git a/bin/configs/spring-boot-springdoc.yaml b/bin/configs/spring-boot-springdoc.yaml
new file mode 100644
index 00000000000..47b1c195c36
--- /dev/null
+++ b/bin/configs/spring-boot-springdoc.yaml
@@ -0,0 +1,10 @@
+generatorName: spring
+outputDir: samples/openapi3/server/petstore/spring-boot-springdoc
+inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/JavaSpring
+additionalProperties:
+  groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
+  artifactId: spring-boot-springdoc
+  snapshotVersion: "true"
+  hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-boot-useoptional-oas3.yaml b/bin/configs/spring-boot-useoptional-oas3.yaml
index 6fd5755ca31..ac66d1df148 100644
--- a/bin/configs/spring-boot-useoptional-oas3.yaml
+++ b/bin/configs/spring-boot-useoptional-oas3.yaml
@@ -4,7 +4,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
-  oas3: "true"
+  documentationProvider: springdoc
   useOptional: true
   artifactId: spring-boot-useoptional
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-boot-useoptional.yaml b/bin/configs/spring-boot-useoptional.yaml
index 93a7924dcba..1e028977898 100644
--- a/bin/configs/spring-boot-useoptional.yaml
+++ b/bin/configs/spring-boot-useoptional.yaml
@@ -3,6 +3,7 @@ outputDir: samples/server/petstore/springboot-useoptional
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   useOptional: true
   artifactId: spring-boot-useoptional
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-boot-virtualan.yaml b/bin/configs/spring-boot-virtualan.yaml
index 3d580d05c8a..c67ecf980ed 100644
--- a/bin/configs/spring-boot-virtualan.yaml
+++ b/bin/configs/spring-boot-virtualan.yaml
@@ -4,6 +4,7 @@ library: spring-boot
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   apiPackage: org.openapitools.virtualan.api
   modelPackage: org.openapitools.virtualan.model
   virtualService: true
diff --git a/bin/configs/spring-boot.yaml b/bin/configs/spring-boot.yaml
index f752bc817e4..fe2345e7126 100644
--- a/bin/configs/spring-boot.yaml
+++ b/bin/configs/spring-boot.yaml
@@ -3,6 +3,7 @@ outputDir: samples/server/petstore/springboot
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot
   snapshotVersion: "true"
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-cloud-async-oas3.yaml b/bin/configs/spring-cloud-async-oas3.yaml
index 637e9b4d162..59c9d22e695 100644
--- a/bin/configs/spring-cloud-async-oas3.yaml
+++ b/bin/configs/spring-cloud-async-oas3.yaml
@@ -5,7 +5,7 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
-  oas3: "true"
+  documentationProvider: springdoc
   async: "true"
   java8: "true"
   artifactId: petstore-spring-cloud
diff --git a/bin/configs/spring-cloud-async.yaml b/bin/configs/spring-cloud-async.yaml
index 7f087b9e0bc..b14f654366f 100644
--- a/bin/configs/spring-cloud-async.yaml
+++ b/bin/configs/spring-cloud-async.yaml
@@ -4,6 +4,7 @@ library: spring-cloud
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   async: "true"
   java8: "true"
   artifactId: petstore-spring-cloud
diff --git a/bin/configs/spring-cloud-date-time-oas3.yaml b/bin/configs/spring-cloud-date-time-oas3.yaml
index 27cd8723133..9e5724d2ac9 100644
--- a/bin/configs/spring-cloud-date-time-oas3.yaml
+++ b/bin/configs/spring-cloud-date-time-oas3.yaml
@@ -5,8 +5,8 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/spring/date-time-par
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
   artifactId: spring-cloud-date-time-oas3
   interfaceOnly: "true"
   singleContentTypes: "true"
-  hideGenerationTimestamp: "true"
-  oas3: "true"
\ No newline at end of file
+  hideGenerationTimestamp: "true"
\ No newline at end of file
diff --git a/bin/configs/spring-cloud-date-time.yaml b/bin/configs/spring-cloud-date-time.yaml
index 16686c8b9ac..ff06030aab3 100644
--- a/bin/configs/spring-cloud-date-time.yaml
+++ b/bin/configs/spring-cloud-date-time.yaml
@@ -4,6 +4,7 @@ outputDir: samples/client/petstore/spring-cloud-date-time
 inputSpec: modules/openapi-generator/src/test/resources/3_0/spring/date-time-parameter-types-for-testing.yml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: spring-cloud-date-time
   interfaceOnly: "true"
   singleContentTypes: "true"
diff --git a/bin/configs/spring-cloud-oas3-fakeapi.yaml b/bin/configs/spring-cloud-oas3-fakeapi.yaml
index f12e8b60199..3f4e3c8ba3a 100644
--- a/bin/configs/spring-cloud-oas3-fakeapi.yaml
+++ b/bin/configs/spring-cloud-oas3-fakeapi.yaml
@@ -5,8 +5,8 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
   artifactId: spring-cloud-oas3
   interfaceOnly: "true"
   singleContentTypes: "true"
   hideGenerationTimestamp: "true"
-  oas3: "true"
diff --git a/bin/configs/spring-cloud-oas3.yaml b/bin/configs/spring-cloud-oas3.yaml
index 3d627dcca25..c43b53303af 100644
--- a/bin/configs/spring-cloud-oas3.yaml
+++ b/bin/configs/spring-cloud-oas3.yaml
@@ -5,8 +5,8 @@ inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
   artifactId: spring-cloud-oas3
   interfaceOnly: "true"
   singleContentTypes: "true"
   hideGenerationTimestamp: "true"
-  oas3: "true"
diff --git a/bin/configs/spring-cloud-petstore-feign-spring-pageable-oas3.yaml b/bin/configs/spring-cloud-petstore-feign-spring-pageable-oas3.yaml
index 64f048226e8..02c96627b64 100644
--- a/bin/configs/spring-cloud-petstore-feign-spring-pageable-oas3.yaml
+++ b/bin/configs/spring-cloud-petstore-feign-spring-pageable-oas3.yaml
@@ -5,6 +5,6 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-spring
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
   groupId: org.openapitools.openapi3
-  oas3: "true"
+  documentationProvider: springdoc
   artifactId: spring-cloud-spring-pageable
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/spring-cloud-petstore-feign-spring-pageable.yaml b/bin/configs/spring-cloud-petstore-feign-spring-pageable.yaml
index 366a1978822..506a1c53be6 100644
--- a/bin/configs/spring-cloud-petstore-feign-spring-pageable.yaml
+++ b/bin/configs/spring-cloud-petstore-feign-spring-pageable.yaml
@@ -4,5 +4,6 @@ library: spring-cloud
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-spring-pageable.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: spring-cloud-spring-pageable
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/spring-cloud.yaml b/bin/configs/spring-cloud.yaml
index df13fabbf03..cd207cd64cd 100644
--- a/bin/configs/spring-cloud.yaml
+++ b/bin/configs/spring-cloud.yaml
@@ -4,5 +4,6 @@ library: spring-cloud
 inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: petstore-spring-cloud
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-mvc-default-values.yaml b/bin/configs/spring-mvc-default-values.yaml
index b1ae7fbd048..e25aa41b503 100644
--- a/bin/configs/spring-mvc-default-values.yaml
+++ b/bin/configs/spring-mvc-default-values.yaml
@@ -3,5 +3,6 @@ outputDir: samples/server/petstore/spring-mvc-default-value
 inputSpec: modules/openapi-generator/src/test/resources/3_0/issue_8535.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   hideGenerationTimestamp: "true"
   artifactId: spring-mvc-default-value
\ No newline at end of file
diff --git a/bin/configs/spring-mvc-j8-async.yaml b/bin/configs/spring-mvc-j8-async.yaml
index cd03b0e427d..287d05993ee 100644
--- a/bin/configs/spring-mvc-j8-async.yaml
+++ b/bin/configs/spring-mvc-j8-async.yaml
@@ -4,6 +4,7 @@ library: spring-mvc
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   async: "true"
   java8: true
   artifactId: spring-mvc-server-j8-async
diff --git a/bin/configs/spring-mvc-j8-localdatetime.yaml b/bin/configs/spring-mvc-j8-localdatetime.yaml
index f8d6126c9f3..c1e66bf80a6 100644
--- a/bin/configs/spring-mvc-j8-localdatetime.yaml
+++ b/bin/configs/spring-mvc-j8-localdatetime.yaml
@@ -4,6 +4,7 @@ library: spring-mvc
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   booleanGetterPrefix: get
   artifactId: spring-mvc-j8-localdatetime
   hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-mvc-no-nullable.yaml b/bin/configs/spring-mvc-no-nullable.yaml
index f1d6585071c..76cefce348f 100644
--- a/bin/configs/spring-mvc-no-nullable.yaml
+++ b/bin/configs/spring-mvc-no-nullable.yaml
@@ -4,6 +4,7 @@ library: spring-mvc
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: spring-mvc-server-no-nullable
   openApiNullable: "false"
   serverPort: "8002"
diff --git a/bin/configs/spring-mvc-petstore-server-spring-pageable.yaml b/bin/configs/spring-mvc-petstore-server-spring-pageable.yaml
index bcb362e65db..027a98cbff4 100644
--- a/bin/configs/spring-mvc-petstore-server-spring-pageable.yaml
+++ b/bin/configs/spring-mvc-petstore-server-spring-pageable.yaml
@@ -4,5 +4,6 @@ library: spring-mvc
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing-with-spring-pageable.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: spring-mvc-spring-pageable
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/spring-mvc.yaml b/bin/configs/spring-mvc.yaml
index 8eca9e650a2..9093bb518c8 100644
--- a/bin/configs/spring-mvc.yaml
+++ b/bin/configs/spring-mvc.yaml
@@ -4,6 +4,7 @@ library: spring-mvc
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   java8: true
   booleanGetterPrefix: get
   artifactId: spring-mvc-server
diff --git a/bin/configs/spring-stubs-oas3.yaml b/bin/configs/spring-stubs-oas3.yaml
new file mode 100644
index 00000000000..d5149f28adc
--- /dev/null
+++ b/bin/configs/spring-stubs-oas3.yaml
@@ -0,0 +1,11 @@
+generatorName: spring
+outputDir: samples/openapi3/client/petstore/spring-stubs
+inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/JavaSpring
+additionalProperties:
+  groupId: org.openapitools.openapi3
+  documentationProvider: springdoc
+  artifactId: spring-stubs
+  interfaceOnly: "true"
+  singleContentTypes: "true"
+  hideGenerationTimestamp: "true"
diff --git a/bin/configs/spring-stubs.yaml b/bin/configs/spring-stubs.yaml
index 8c58e6838ea..bdbefb1e58f 100644
--- a/bin/configs/spring-stubs.yaml
+++ b/bin/configs/spring-stubs.yaml
@@ -3,6 +3,7 @@ outputDir: samples/client/petstore/spring-stubs
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: spring-stubs
   interfaceOnly: "true"
   singleContentTypes: "true"
diff --git a/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern-without-j8.yaml b/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern-without-j8.yaml
index 7e0c9882db5..7d16b4a1e76 100644
--- a/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern-without-j8.yaml
+++ b/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern-without-j8.yaml
@@ -6,5 +6,6 @@ templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 delegatePattern: true
 java8: false
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot-spring-pageable-delegatePattern-without-j8
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern.yaml b/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern.yaml
index 9c96151f04f..c4d1eb5b687 100644
--- a/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern.yaml
+++ b/bin/configs/springboot-petstore-server-spring-pageable-delegatePattern.yaml
@@ -5,5 +5,6 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 delegatePattern: true
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot-spring-pageable-delegatePattern
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/springboot-petstore-server-spring-pageable-without-j8.yaml b/bin/configs/springboot-petstore-server-spring-pageable-without-j8.yaml
index c87a6776a5f..87c63968490 100644
--- a/bin/configs/springboot-petstore-server-spring-pageable-without-j8.yaml
+++ b/bin/configs/springboot-petstore-server-spring-pageable-without-j8.yaml
@@ -5,5 +5,6 @@ inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-e
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 java8: false
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot-spring-pageable-withoutj8
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/springboot-petstore-server-spring-pageable.yaml b/bin/configs/springboot-petstore-server-spring-pageable.yaml
index ddeaaa6cb72..db518c22604 100644
--- a/bin/configs/springboot-petstore-server-spring-pageable.yaml
+++ b/bin/configs/springboot-petstore-server-spring-pageable.yaml
@@ -4,5 +4,6 @@ library: spring-boot
 inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing-with-spring-pageable.yaml
 templateDir: modules/openapi-generator/src/main/resources/JavaSpring
 additionalProperties:
+  documentationProvider: springfox
   artifactId: springboot-spring-pageable
   hideGenerationTimestamp: 'true'
diff --git a/bin/configs/typescript-axios-with-string-enums.yaml b/bin/configs/typescript-axios-with-string-enums.yaml
new file mode 100644
index 00000000000..4ea5a08e30d
--- /dev/null
+++ b/bin/configs/typescript-axios-with-string-enums.yaml
@@ -0,0 +1,6 @@
+generatorName: typescript-axios
+outputDir: samples/client/petstore/typescript-axios/builds/with-string-enums
+inputSpec: modules/openapi-generator/src/test/resources/2_0/petstore.yaml
+templateDir: modules/openapi-generator/src/main/resources/typescript-axios
+additionalProperties:
+  stringEnums: true
diff --git a/docs/configuration.md b/docs/configuration.md
index aa7d1b5c9b2..b5590ec21ad 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -36,7 +36,7 @@ _How_ you provide values to options also depends on the tool. OpenAPI Generator
 openApiGenerate {
     globalProperties = [
         apis: "",
-        models: "User,Pet"
+        models: "User:Pet"
     ]
 }
 ```
diff --git a/docs/generators.md b/docs/generators.md
index d8a3b6e7e56..595a9e804af 100644
--- a/docs/generators.md
+++ b/docs/generators.md
@@ -51,7 +51,8 @@ The following generators are available:
 * [php](generators/php.md)  
 * [php-dt (beta)](generators/php-dt.md)  
 * [powershell (beta)](generators/powershell.md)  
-* [python (experimental)](generators/python.md)  
+* [python](generators/python.md)  
+* [python-experimental (experimental)](generators/python-experimental.md)  
 * [python-legacy](generators/python-legacy.md)  
 * [r](generators/r.md)  
 * [ruby](generators/ruby.md)  
@@ -61,7 +62,6 @@ The following generators are available:
 * [scala-httpclient-deprecated (deprecated)](generators/scala-httpclient-deprecated.md)  
 * [scala-sttp (beta)](generators/scala-sttp.md)  
 * [scalaz](generators/scalaz.md)  
-* [swift4-deprecated (deprecated)](generators/swift4-deprecated.md)  
 * [swift5](generators/swift5.md)  
 * [typescript (experimental)](generators/typescript.md)  
 * [typescript-angular](generators/typescript-angular.md)  
@@ -82,7 +82,7 @@ The following generators are available:
 * [cpp-pistache-server](generators/cpp-pistache-server.md)  
 * [cpp-qt-qhttpengine-server](generators/cpp-qt-qhttpengine-server.md)  
 * [cpp-restbed-server](generators/cpp-restbed-server.md)  
-* [csharp-nancyfx](generators/csharp-nancyfx.md)  
+* [csharp-nancyfx-deprecated (deprecated)](generators/csharp-nancyfx-deprecated.md)  
 * [csharp-netcore-functions (beta)](generators/csharp-netcore-functions.md)  
 * [erlang-server](generators/erlang-server.md)  
 * [fsharp-functions (beta)](generators/fsharp-functions.md)  
@@ -93,7 +93,9 @@ The following generators are available:
 * [graphql-nodejs-express-server](generators/graphql-nodejs-express-server.md)  
 * [haskell](generators/haskell.md)  
 * [haskell-yesod (beta)](generators/haskell-yesod.md)  
+* [java-camel](generators/java-camel.md)  
 * [java-inflector](generators/java-inflector.md)  
+* [java-micronaut-server (beta)](generators/java-micronaut-server.md)  
 * [java-msf4j](generators/java-msf4j.md)  
 * [java-pkmst](generators/java-pkmst.md)  
 * [java-play-framework](generators/java-play-framework.md)  
diff --git a/docs/generators/ada-server.md b/docs/generators/ada-server.md
index f88751432cb..63c530a26cb 100644
--- a/docs/generators/ada-server.md
+++ b/docs/generators/ada-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ada-server
-sidebar_label: ada-server
+title: Documentation for the ada-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ada-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Ada | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Ada server implementation (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/ada.md b/docs/generators/ada.md
index 3c08371fe24..8bb28aefe70 100644
--- a/docs/generators/ada.md
+++ b/docs/generators/ada.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ada
-sidebar_label: ada
+title: Documentation for the ada Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ada | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Ada | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Ada client implementation (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/android.md b/docs/generators/android.md
index 12e99f75cf3..650b819bea6 100644
--- a/docs/generators/android.md
+++ b/docs/generators/android.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for android
-sidebar_label: android
+title: Documentation for the android Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | android | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Android client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/apache2.md b/docs/generators/apache2.md
index 0db25b032cd..8cc8e289328 100644
--- a/docs/generators/apache2.md
+++ b/docs/generators/apache2.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for apache2
-sidebar_label: apache2
+title: Documentation for the apache2 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | apache2 | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CONFIG | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Apache2 Config file with the permissions | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/apex.md b/docs/generators/apex.md
index 89dfd44654d..f92f9e57177 100644
--- a/docs/generators/apex.md
+++ b/docs/generators/apex.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for apex
-sidebar_label: apex
+title: Documentation for the apex Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | apex | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Apex | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Apex API client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/asciidoc.md b/docs/generators/asciidoc.md
index 80f949644c8..712f00d17b4 100644
--- a/docs/generators/asciidoc.md
+++ b/docs/generators/asciidoc.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for asciidoc
-sidebar_label: asciidoc
+title: Documentation for the asciidoc Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | asciidoc | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates asciidoc markup based documentation. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/aspnetcore.md b/docs/generators/aspnetcore.md
index 6e07567bcc1..a85eac91e7f 100644
--- a/docs/generators/aspnetcore.md
+++ b/docs/generators/aspnetcore.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for aspnetcore
-sidebar_label: aspnetcore
+title: Documentation for the aspnetcore Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | aspnetcore | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | C# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an ASP.NET Core Web API server. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -19,7 +30,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseUrl|The URL of the license| |http://localhost|
 |modelClassModifier|Model Class Modifier can be nothing or partial| |partial|
 |newtonsoftVersion|Version for Microsoft.AspNetCore.Mvc.NewtonsoftJson for ASP.NET Core 3.0+| |3.0.0|
-|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.0 or newer.| |false|
+|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.1 or newer.| |false|
 |operationIsAsync|Set methods to async or sync (default).| |false|
 |operationModifier|Operation Modifier can be virtual or abstract|<dl><dt>**virtual**</dt><dd>Keep method virtual</dd><dt>**abstract**</dt><dd>Make method abstract</dd></dl>|virtual|
 |operationResultTask|Set methods result to Task&lt;&gt;.| |false|
diff --git a/docs/generators/avro-schema.md b/docs/generators/avro-schema.md
index cbb7dd6e3f0..8ea48f62882 100644
--- a/docs/generators/avro-schema.md
+++ b/docs/generators/avro-schema.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for avro-schema
-sidebar_label: avro-schema
+title: Documentation for the avro-schema Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | avro-schema | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SCHEMA | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Avro model (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/bash.md b/docs/generators/bash.md
index 590f535c54f..8a4f10696e3 100644
--- a/docs/generators/bash.md
+++ b/docs/generators/bash.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for bash
-sidebar_label: bash
+title: Documentation for the bash Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | bash | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Bash | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Bash client script based on cURL. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/c.md b/docs/generators/c.md
index c6e5c35372f..3bab335a5f6 100644
--- a/docs/generators/c.md
+++ b/docs/generators/c.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for c
-sidebar_label: c
+title: Documentation for the c Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | c | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | C | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C (libcurl) client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/clojure.md b/docs/generators/clojure.md
index cf7b0c3bc03..542a27c2998 100644
--- a/docs/generators/clojure.md
+++ b/docs/generators/clojure.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for clojure
-sidebar_label: clojure
+title: Documentation for the clojure Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | clojure | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Clojure | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Clojure client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-pistache-server.md b/docs/generators/cpp-pistache-server.md
index 0e4046ec566..e561cac7c5a 100644
--- a/docs/generators/cpp-pistache-server.md
+++ b/docs/generators/cpp-pistache-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-pistache-server
-sidebar_label: cpp-pistache-server
+title: Documentation for the cpp-pistache-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-pistache-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C++ API server (based on Pistache) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-qt-client.md b/docs/generators/cpp-qt-client.md
index 4bb53da53f3..a03ff5bc48b 100644
--- a/docs/generators/cpp-qt-client.md
+++ b/docs/generators/cpp-qt-client.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-qt-client
-sidebar_label: cpp-qt-client
+title: Documentation for the cpp-qt-client Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-qt-client | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Qt C++ client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-qt-qhttpengine-server.md b/docs/generators/cpp-qt-qhttpengine-server.md
index 6126b80c254..5de00c76638 100644
--- a/docs/generators/cpp-qt-qhttpengine-server.md
+++ b/docs/generators/cpp-qt-qhttpengine-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-qt-qhttpengine-server
-sidebar_label: cpp-qt-qhttpengine-server
+title: Documentation for the cpp-qt-qhttpengine-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-qt-qhttpengine-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Qt C++ Server using the QHTTPEngine HTTP Library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-restbed-server.md b/docs/generators/cpp-restbed-server.md
index 4683a9be64b..c499ba8e28d 100644
--- a/docs/generators/cpp-restbed-server.md
+++ b/docs/generators/cpp-restbed-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-restbed-server
-sidebar_label: cpp-restbed-server
+title: Documentation for the cpp-restbed-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-restbed-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C++ API Server with Restbed (https://github.com/Corvusoft/restbed). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-restsdk.md b/docs/generators/cpp-restsdk.md
index 4fc97b939ae..5cad57183bc 100644
--- a/docs/generators/cpp-restsdk.md
+++ b/docs/generators/cpp-restsdk.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-restsdk
-sidebar_label: cpp-restsdk
+title: Documentation for the cpp-restsdk Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-restsdk | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C++ API client with C++ REST SDK (https://github.com/Microsoft/cpprestsdk). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-tiny.md b/docs/generators/cpp-tiny.md
index 4da8351e58a..ca65611bf81 100644
--- a/docs/generators/cpp-tiny.md
+++ b/docs/generators/cpp-tiny.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-tiny
-sidebar_label: cpp-tiny
+title: Documentation for the cpp-tiny Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-tiny | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C++ Arduino REST API client. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-tizen.md b/docs/generators/cpp-tizen.md
index 7f5b106c048..9b5f89bb2c7 100644
--- a/docs/generators/cpp-tizen.md
+++ b/docs/generators/cpp-tizen.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-tizen
-sidebar_label: cpp-tizen
+title: Documentation for the cpp-tizen Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-tizen | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Samsung Tizen C++ client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/cpp-ue4.md b/docs/generators/cpp-ue4.md
index be06301a99d..f619e7eaf7b 100644
--- a/docs/generators/cpp-ue4.md
+++ b/docs/generators/cpp-ue4.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for cpp-ue4
-sidebar_label: cpp-ue4
+title: Documentation for the cpp-ue4 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cpp-ue4 | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | C++ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Unreal Engine 4 C++ Module (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/crystal.md b/docs/generators/crystal.md
index b79135246bb..45aaac6e9e5 100644
--- a/docs/generators/crystal.md
+++ b/docs/generators/crystal.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for crystal
-sidebar_label: crystal
+title: Documentation for the crystal Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | crystal | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | Crystal | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Crystal client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/csharp-dotnet2.md b/docs/generators/csharp-dotnet2.md
index fa97c717000..274150134c9 100644
--- a/docs/generators/csharp-dotnet2.md
+++ b/docs/generators/csharp-dotnet2.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for csharp-dotnet2
-sidebar_label: csharp-dotnet2
+title: Documentation for the csharp-dotnet2 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | csharp-dotnet2 | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | CLIENT | |
+| generator language | C# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C# .Net 2.0 client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/csharp-nancyfx.md b/docs/generators/csharp-nancyfx-deprecated.md
similarity index 91%
rename from docs/generators/csharp-nancyfx.md
rename to docs/generators/csharp-nancyfx-deprecated.md
index f08b5157930..519edc27307 100644
--- a/docs/generators/csharp-nancyfx.md
+++ b/docs/generators/csharp-nancyfx-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for csharp-nancyfx
-sidebar_label: csharp-nancyfx
+title: Documentation for the csharp-nancyfx-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | csharp-nancyfx-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | SERVER | |
+| generator language | C# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C# NancyFX Web API server (deprecated). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/csharp-netcore-functions.md b/docs/generators/csharp-netcore-functions.md
index 50ec49b34a1..5030dee051a 100644
--- a/docs/generators/csharp-netcore-functions.md
+++ b/docs/generators/csharp-netcore-functions.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for csharp-netcore-functions
-sidebar_label: csharp-netcore-functions
+title: Documentation for the csharp-netcore-functions Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | csharp-netcore-functions | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | C# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a csharp server. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -18,7 +29,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |PascalCase|
 |netCoreProjectFile|Use the new format (.NET Core) for .NET project files (.csproj).| |false|
 |nonPublicApi|Generates code with reduced access modifiers; allows embedding elsewhere without exposing non-public API calls to consumers.| |false|
-|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.0 or newer.| |false|
+|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.1 or newer.| |false|
 |optionalAssemblyInfo|Generate AssemblyInfo.cs.| |true|
 |optionalEmitDefaultValues|Set DataMember's EmitDefaultValue.| |false|
 |optionalMethodArgument|C# Optional method argument, e.g. void square(int x=10) (.net 4.0+ only).| |true|
@@ -31,7 +42,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |returnICollection|Return ICollection&lt;T&gt; instead of the concrete type.| |false|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src|
-|targetFramework|The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.0`|<dl><dt>**netstandard1.3**</dt><dd>.NET Standard 1.3 compatible</dd><dt>**netstandard1.4**</dt><dd>.NET Standard 1.4 compatible</dd><dt>**netstandard1.5**</dt><dd>.NET Standard 1.5 compatible</dd><dt>**netstandard1.6**</dt><dd>.NET Standard 1.6 compatible</dd><dt>**netstandard2.0**</dt><dd>.NET Standard 2.0 compatible</dd><dt>**netstandard2.1**</dt><dd>.NET Standard 2.1 compatible</dd><dt>**netcoreapp2.0**</dt><dd>.NET Core 2.0 compatible</dd><dt>**netcoreapp2.1**</dt><dd>.NET Core 2.1 compatible</dd><dt>**netcoreapp3.0**</dt><dd>.NET Core 3.0 compatible</dd><dt>**netcoreapp3.1**</dt><dd>.NET Core 3.1 compatible</dd><dt>**net47**</dt><dd>.NET Framework 4.7 compatible</dd><dt>**net5.0**</dt><dd>.NET 5.0 compatible</dd></dl>|netstandard2.0|
+|targetFramework|The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.1`|<dl><dt>**netstandard1.3**</dt><dd>.NET Standard 1.3 compatible</dd><dt>**netstandard1.4**</dt><dd>.NET Standard 1.4 compatible</dd><dt>**netstandard1.5**</dt><dd>.NET Standard 1.5 compatible</dd><dt>**netstandard1.6**</dt><dd>.NET Standard 1.6 compatible</dd><dt>**netstandard2.0**</dt><dd>.NET Standard 2.0 compatible</dd><dt>**netstandard2.1**</dt><dd>.NET Standard 2.1 compatible</dd><dt>**netcoreapp2.0**</dt><dd>.NET Core 2.0 compatible</dd><dt>**netcoreapp2.1**</dt><dd>.NET Core 2.1 compatible</dd><dt>**netcoreapp3.0**</dt><dd>.NET Core 3.0 compatible</dd><dt>**netcoreapp3.1**</dt><dd>.NET Core 3.1 compatible</dd><dt>**net47**</dt><dd>.NET Framework 4.7 compatible</dd><dt>**net5.0**</dt><dd>.NET 5.0 compatible</dd></dl>|netstandard2.0|
 |useCollection|Deserialize array types to Collection&lt;T&gt; instead of List&lt;T&gt;.| |false|
 |useDateTimeOffset|Use DateTimeOffset to model date-time properties| |false|
 |useOneOfDiscriminatorLookup|Use the discriminator's mapping in oneOf to speed up the model lookup. IMPORTANT: Validation (e.g. one and only one match in oneOf's schemas) will be skipped.| |false|
diff --git a/docs/generators/csharp-netcore.md b/docs/generators/csharp-netcore.md
index bb138ef414d..6e4a146c894 100644
--- a/docs/generators/csharp-netcore.md
+++ b/docs/generators/csharp-netcore.md
@@ -1,24 +1,36 @@
 ---
-title: Config Options for csharp-netcore
-sidebar_label: csharp-netcore
+title: Documentation for the csharp-netcore Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | csharp-netcore | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | C# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a C# client library (.NET Standard, .NET Core). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
 | ------ | ----------- | ------ | ------- |
 |allowUnicodeIdentifiers|boolean, toggles whether unicode identifiers are allowed in names or not, default is false| |false|
+|apiName|Must be a valid C# class name. Only used in Generic Host library. Default: Api| |Api|
 |caseInsensitiveResponseHeaders|Make API response's headers case-insensitive| |false|
 |conditionalSerialization|Serialize only those properties which are initialized by user, accepted values are true or false, default value is false.| |false|
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
 |interfacePrefix|Prefix interfaces with a community standard or widely accepted prefix.| |I|
-|library|HTTP library template (sub-template) to use|<dl><dt>**httpclient**</dt><dd>HttpClient (https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient) (Experimental. May subject to breaking changes without further notice.)</dd><dt>**restsharp**</dt><dd>RestSharp (https://github.com/restsharp/RestSharp)</dd></dl>|restsharp|
+|library|HTTP library template (sub-template) to use|<dl><dt>**generichost**</dt><dd>HttpClient with Generic Host dependency injection (https://docs.microsoft.com/en-us/dotnet/core/extensions/generic-host) (Experimental. Subject to breaking changes without notice.)</dd><dt>**httpclient**</dt><dd>HttpClient (https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient) (Experimental. Subject to breaking changes without notice.)</dd><dt>**restsharp**</dt><dd>RestSharp (https://github.com/restsharp/RestSharp)</dd></dl>|restsharp|
 |licenseId|The identifier of the license| |null|
 |modelPropertyNaming|Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name| |PascalCase|
 |netCoreProjectFile|Use the new format (.NET Core) for .NET project files (.csproj).| |false|
 |nonPublicApi|Generates code with reduced access modifiers; allows embedding elsewhere without exposing non-public API calls to consumers.| |false|
-|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.0 or newer.| |false|
+|nullableReferenceTypes|Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.1 or newer.| |false|
 |optionalAssemblyInfo|Generate AssemblyInfo.cs.| |true|
 |optionalEmitDefaultValues|Set DataMember's EmitDefaultValue.| |false|
 |optionalMethodArgument|C# Optional method argument, e.g. void square(int x=10) (.net 4.0+ only).| |true|
@@ -31,7 +43,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |returnICollection|Return ICollection&lt;T&gt; instead of the concrete type.| |false|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src|
-|targetFramework|The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.0`|<dl><dt>**netstandard1.3**</dt><dd>.NET Standard 1.3 compatible</dd><dt>**netstandard1.4**</dt><dd>.NET Standard 1.4 compatible</dd><dt>**netstandard1.5**</dt><dd>.NET Standard 1.5 compatible</dd><dt>**netstandard1.6**</dt><dd>.NET Standard 1.6 compatible</dd><dt>**netstandard2.0**</dt><dd>.NET Standard 2.0 compatible</dd><dt>**netstandard2.1**</dt><dd>.NET Standard 2.1 compatible</dd><dt>**netcoreapp2.0**</dt><dd>.NET Core 2.0 compatible</dd><dt>**netcoreapp2.1**</dt><dd>.NET Core 2.1 compatible</dd><dt>**netcoreapp3.0**</dt><dd>.NET Core 3.0 compatible</dd><dt>**netcoreapp3.1**</dt><dd>.NET Core 3.1 compatible</dd><dt>**net47**</dt><dd>.NET Framework 4.7 compatible</dd><dt>**net5.0**</dt><dd>.NET 5.0 compatible</dd><dt>**net6.0**</dt><dd>.NET 6.0 compatible</dd></dl>|netstandard2.0|
+|targetFramework|The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.1`|<dl><dt>**netstandard1.3**</dt><dd>.NET Standard 1.3 compatible</dd><dt>**netstandard1.4**</dt><dd>.NET Standard 1.4 compatible</dd><dt>**netstandard1.5**</dt><dd>.NET Standard 1.5 compatible</dd><dt>**netstandard1.6**</dt><dd>.NET Standard 1.6 compatible</dd><dt>**netstandard2.0**</dt><dd>.NET Standard 2.0 compatible</dd><dt>**netstandard2.1**</dt><dd>.NET Standard 2.1 compatible</dd><dt>**netcoreapp2.0**</dt><dd>.NET Core 2.0 compatible (deprecated)</dd><dt>**netcoreapp2.1**</dt><dd>.NET Core 2.1 compatible (deprecated)</dd><dt>**netcoreapp3.0**</dt><dd>.NET Core 3.0 compatible (deprecated)</dd><dt>**netcoreapp3.1**</dt><dd>.NET Core 3.1 compatible</dd><dt>**net47**</dt><dd>.NET Framework 4.7 compatible</dd><dt>**net5.0**</dt><dd>.NET 5.0 compatible</dd><dt>**net6.0**</dt><dd>.NET 6.0 compatible</dd></dl>|netstandard2.0|
 |useCollection|Deserialize array types to Collection&lt;T&gt; instead of List&lt;T&gt;.| |false|
 |useDateTimeOffset|Use DateTimeOffset to model date-time properties| |false|
 |useOneOfDiscriminatorLookup|Use the discriminator's mapping in oneOf to speed up the model lookup. IMPORTANT: Validation (e.g. one and only one match in oneOf's schemas) will be skipped.| |false|
diff --git a/docs/generators/csharp.md b/docs/generators/csharp.md
index b572a6c3710..4caf9db56c8 100644
--- a/docs/generators/csharp.md
+++ b/docs/generators/csharp.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for csharp
-sidebar_label: csharp
+title: Documentation for the csharp Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | csharp | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | C# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a CSharp client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -25,7 +36,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |returnICollection|Return ICollection&lt;T&gt; instead of the concrete type.| |false|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src|
-|targetFramework|The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.0`|<dl><dt>**v3.5**</dt><dd>.NET Framework 3.5 compatible</dd><dt>**v4.0**</dt><dd>.NET Framework 4.0 compatible</dd><dt>**v4.5**</dt><dd>.NET Framework 4.5 compatible</dd><dt>**v4.5.2**</dt><dd>.NET Framework 4.5.2+ compatible</dd><dt>**netstandard1.3**</dt><dd>.NET Standard 1.3 compatible (DEPRECATED. Please use `csharp-netcore` generator instead)</dd><dt>**uwp**</dt><dd>Universal Windows Platform (DEPRECATED. Please use `csharp-netcore` generator instead)</dd></dl>|v4.5|
+|targetFramework|The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.1`|<dl><dt>**v3.5**</dt><dd>.NET Framework 3.5 compatible</dd><dt>**v4.0**</dt><dd>.NET Framework 4.0 compatible</dd><dt>**v4.5**</dt><dd>.NET Framework 4.5 compatible</dd><dt>**v4.5.2**</dt><dd>.NET Framework 4.5.2+ compatible</dd><dt>**netstandard1.3**</dt><dd>.NET Standard 1.3 compatible (DEPRECATED. Please use `csharp-netcore` generator instead)</dd><dt>**uwp**</dt><dd>Universal Windows Platform (DEPRECATED. Please use `csharp-netcore` generator instead)</dd></dl>|v4.5|
 |useCollection|Deserialize array types to Collection&lt;T&gt; instead of List&lt;T&gt;.| |false|
 |useCompareNetObjects|Use KellermanSoftware.CompareNetObjects for deep recursive object comparison. WARNING: this option incurs potential performance impact.| |false|
 |useDateTimeOffset|Use DateTimeOffset to model date-time properties| |false|
diff --git a/docs/generators/cwiki.md b/docs/generators/cwiki.md
index d10f1d303ef..1f74c2420be 100644
--- a/docs/generators/cwiki.md
+++ b/docs/generators/cwiki.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for cwiki
-sidebar_label: cwiki
+title: Documentation for the cwiki Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | cwiki | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates confluence wiki markup. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/dart-dio-next.md b/docs/generators/dart-dio-next.md
index 869645f7da8..d247192fd97 100644
--- a/docs/generators/dart-dio-next.md
+++ b/docs/generators/dart-dio-next.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for dart-dio-next
-sidebar_label: dart-dio-next
+title: Documentation for the dart-dio-next Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | dart-dio-next | pass this to the generate command after -g |
+| generator stability | EXPERIMENTAL | |
+| generator type | CLIENT | |
+| generator language | Dart | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Dart Dio client library with null-safety. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/dart-dio.md b/docs/generators/dart-dio.md
index e3b6ac95639..b94bed6bcc7 100644
--- a/docs/generators/dart-dio.md
+++ b/docs/generators/dart-dio.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for dart-dio
-sidebar_label: dart-dio
+title: Documentation for the dart-dio Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | dart-dio | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Dart | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Dart Dio client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/dart-jaguar.md b/docs/generators/dart-jaguar.md
index 769fa166dab..0f6aed48cbe 100644
--- a/docs/generators/dart-jaguar.md
+++ b/docs/generators/dart-jaguar.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for dart-jaguar
-sidebar_label: dart-jaguar
+title: Documentation for the dart-jaguar Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | dart-jaguar | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | CLIENT | |
+| generator language | Dart | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Dart Jaguar client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/dart.md b/docs/generators/dart.md
index 73f113808b4..5c8c4ffac8b 100644
--- a/docs/generators/dart.md
+++ b/docs/generators/dart.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for dart
-sidebar_label: dart
+title: Documentation for the dart Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | dart | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Dart | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Dart 2.x client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/dynamic-html.md b/docs/generators/dynamic-html.md
index 771cecc8b15..e9d3b13c8d0 100644
--- a/docs/generators/dynamic-html.md
+++ b/docs/generators/dynamic-html.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for dynamic-html
-sidebar_label: dynamic-html
+title: Documentation for the dynamic-html Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | dynamic-html | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a dynamic HTML site. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/eiffel.md b/docs/generators/eiffel.md
index b2f38750eba..ff72e722de9 100644
--- a/docs/generators/eiffel.md
+++ b/docs/generators/eiffel.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for eiffel
-sidebar_label: eiffel
+title: Documentation for the eiffel Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | eiffel | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Eiffel | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Eiffel client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/elixir.md b/docs/generators/elixir.md
index 543f116ddb2..6bd748e76ae 100644
--- a/docs/generators/elixir.md
+++ b/docs/generators/elixir.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for elixir
-sidebar_label: elixir
+title: Documentation for the elixir Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | elixir | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Elixir | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an elixir client library (alpha). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/elm.md b/docs/generators/elm.md
index 73b67667616..78b5e8ef63e 100644
--- a/docs/generators/elm.md
+++ b/docs/generators/elm.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for elm
-sidebar_label: elm
+title: Documentation for the elm Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | elm | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Elm | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Elm client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/erlang-client.md b/docs/generators/erlang-client.md
index ebbd5e53ec6..f1708efec37 100644
--- a/docs/generators/erlang-client.md
+++ b/docs/generators/erlang-client.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for erlang-client
-sidebar_label: erlang-client
+title: Documentation for the erlang-client Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | erlang-client | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Erlang | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Erlang client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/erlang-proper.md b/docs/generators/erlang-proper.md
index 4db9d763c9b..ead391057ce 100644
--- a/docs/generators/erlang-proper.md
+++ b/docs/generators/erlang-proper.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for erlang-proper
-sidebar_label: erlang-proper
+title: Documentation for the erlang-proper Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | erlang-proper | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Erlang | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Erlang library with PropEr generators (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/erlang-server.md b/docs/generators/erlang-server.md
index 385100fac8e..944c2be8ced 100644
--- a/docs/generators/erlang-server.md
+++ b/docs/generators/erlang-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for erlang-server
-sidebar_label: erlang-server
+title: Documentation for the erlang-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | erlang-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Erlang | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Erlang server library (beta) using OpenAPI Generator (https://openapi-generator.tech). By default, it will also generate service classes, which can be disabled with the `-Dnoservice` environment variable. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/flash-deprecated.md b/docs/generators/flash-deprecated.md
new file mode 100644
index 00000000000..7969d5f8e0e
--- /dev/null
+++ b/docs/generators/flash-deprecated.md
@@ -0,0 +1,193 @@
+---
+title: Documentation for the flash-deprecated Generator
+---
+
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | flash-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | CLIENT | |
+| generator language | Flash | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Flash (ActionScript) client library (beta). IMPORTANT: this generator has been deprecated in v5.x | |
+
+## CONFIG OPTIONS
+These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
+
+| Option | Description | Values | Default |
+| ------ | ----------- | ------ | ------- |
+|invokerPackage|root package for generated code| |null|
+|packageName|flash package name (convention: package.name)| |org.openapitools|
+|packageVersion|flash package version| |1.0.0|
+|sourceFolder|source folder for generated code. e.g. flash| |null|
+
+## IMPORT MAPPING
+
+| Type/Alias | Imports |
+| ---------- | ------- |
+|File|flash.filesystem.File|
+
+
+## INSTANTIATION TYPES
+
+| Type/Alias | Instantiated By |
+| ---------- | --------------- |
+
+
+## LANGUAGE PRIMITIVES
+
+<ul class="column-ul">
+<li>Array</li>
+<li>Boolean</li>
+<li>Date</li>
+<li>Dictionary</li>
+<li>Number</li>
+<li>String</li>
+</ul>
+
+## RESERVED WORDS
+
+<ul class="column-ul">
+<li>add</li>
+<li>and</li>
+<li>break</li>
+<li>continue</li>
+<li>delete</li>
+<li>do</li>
+<li>else</li>
+<li>eq</li>
+<li>for</li>
+<li>function</li>
+<li>ge</li>
+<li>gt</li>
+<li>if</li>
+<li>ifframeloaded</li>
+<li>in</li>
+<li>le</li>
+<li>lt</li>
+<li>ne</li>
+<li>new</li>
+<li>not</li>
+<li>on</li>
+<li>onclipevent</li>
+<li>or</li>
+<li>return</li>
+<li>telltarget</li>
+<li>this</li>
+<li>typeof</li>
+<li>var</li>
+<li>void</li>
+<li>while</li>
+<li>with</li>
+</ul>
+
+## FEATURE SET
+
+
+### Client Modification Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasePath|✓|ToolingExtension
+|Authorizations|✗|ToolingExtension
+|UserAgent|✗|ToolingExtension
+|MockServer|✗|ToolingExtension
+
+### Data Type Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Custom|✗|OAS2,OAS3
+|Int32|✓|OAS2,OAS3
+|Int64|✓|OAS2,OAS3
+|Float|✓|OAS2,OAS3
+|Double|✓|OAS2,OAS3
+|Decimal|✓|ToolingExtension
+|String|✓|OAS2,OAS3
+|Byte|✓|OAS2,OAS3
+|Binary|✓|OAS2,OAS3
+|Boolean|✓|OAS2,OAS3
+|Date|✓|OAS2,OAS3
+|DateTime|✓|OAS2,OAS3
+|Password|✓|OAS2,OAS3
+|File|✓|OAS2
+|Array|✓|OAS2,OAS3
+|Maps|✓|ToolingExtension
+|CollectionFormat|✓|OAS2
+|CollectionFormatMulti|✓|OAS2
+|Enum|✓|OAS2,OAS3
+|ArrayOfEnum|✓|ToolingExtension
+|ArrayOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
+|ArrayOfCollectionOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfEnum|✓|ToolingExtension
+|MapOfEnum|✓|ToolingExtension
+|MapOfModel|✓|ToolingExtension
+|MapOfCollectionOfPrimitives|✓|ToolingExtension
+|MapOfCollectionOfModel|✓|ToolingExtension
+|MapOfCollectionOfEnum|✓|ToolingExtension
+
+### Documentation Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Readme|✓|ToolingExtension
+|Model|✓|ToolingExtension
+|Api|✓|ToolingExtension
+
+### Global Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Host|✓|OAS2,OAS3
+|BasePath|✓|OAS2,OAS3
+|Info|✓|OAS2,OAS3
+|Schemes|✗|OAS2,OAS3
+|PartialSchemes|✓|OAS2,OAS3
+|Consumes|✓|OAS2
+|Produces|✓|OAS2
+|ExternalDocumentation|✓|OAS2,OAS3
+|Examples|✓|OAS2,OAS3
+|XMLStructureDefinitions|✗|OAS2,OAS3
+|MultiServer|✗|OAS3
+|ParameterizedServer|✗|OAS3
+|ParameterStyling|✗|OAS3
+|Callbacks|✗|OAS3
+|LinkObjects|✗|OAS3
+
+### Parameter Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Path|✓|OAS2,OAS3
+|Query|✓|OAS2,OAS3
+|Header|✓|OAS2,OAS3
+|Body|✓|OAS2
+|FormUnencoded|✓|OAS2
+|FormMultipart|✓|OAS2
+|Cookie|✗|OAS3
+
+### Schema Support Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Simple|✓|OAS2,OAS3
+|Composite|✓|OAS2,OAS3
+|Polymorphism|✗|OAS2,OAS3
+|Union|✗|OAS3
+
+### Security Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasicAuth|✗|OAS2,OAS3
+|ApiKey|✓|OAS2,OAS3
+|OpenIDConnect|✗|OAS3
+|BearerToken|✗|OAS3
+|OAuth2_Implicit|✗|OAS2,OAS3
+|OAuth2_Password|✗|OAS2,OAS3
+|OAuth2_ClientCredentials|✗|OAS2,OAS3
+|OAuth2_AuthorizationCode|✗|OAS2,OAS3
+
+### Wire Format Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|JSON|✓|OAS2,OAS3
+|XML|✓|OAS2,OAS3
+|PROTOBUF|✗|ToolingExtension
+|Custom|✗|OAS2,OAS3
diff --git a/docs/generators/fsharp-functions.md b/docs/generators/fsharp-functions.md
index de363c1ca6b..dbb88f99e33 100644
--- a/docs/generators/fsharp-functions.md
+++ b/docs/generators/fsharp-functions.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for fsharp-functions
-sidebar_label: fsharp-functions
+title: Documentation for the fsharp-functions Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | fsharp-functions | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | F# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a fsharp-functions server (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/fsharp-giraffe-server.md b/docs/generators/fsharp-giraffe-server.md
index f374168aa71..8c98bc32942 100644
--- a/docs/generators/fsharp-giraffe-server.md
+++ b/docs/generators/fsharp-giraffe-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for fsharp-giraffe-server
-sidebar_label: fsharp-giraffe-server
+title: Documentation for the fsharp-giraffe-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | fsharp-giraffe-server | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | F# | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a F# Giraffe server (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/go-deprecated.md b/docs/generators/go-deprecated.md
index 4faa3a8b636..e72c7b7f847 100644
--- a/docs/generators/go-deprecated.md
+++ b/docs/generators/go-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for go-deprecated
-sidebar_label: go-deprecated
+title: Documentation for the go-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | go-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | CLIENT | |
+| generator language | Go | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Go client library (beta). NOTE: this generator has been deprecated. Please use `go` client generator instead. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/go-echo-server.md b/docs/generators/go-echo-server.md
index 53c726fb85e..7e638bc7c67 100644
--- a/docs/generators/go-echo-server.md
+++ b/docs/generators/go-echo-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for go-echo-server
-sidebar_label: go-echo-server
+title: Documentation for the go-echo-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | go-echo-server | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Go | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a go-echo server. (Beta) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/go-gin-server.md b/docs/generators/go-gin-server.md
index 0c1d324191d..035d0bfeda3 100644
--- a/docs/generators/go-gin-server.md
+++ b/docs/generators/go-gin-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for go-gin-server
-sidebar_label: go-gin-server
+title: Documentation for the go-gin-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | go-gin-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Go | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Go server library with the gin framework using OpenAPI-Generator.By default, it will also generate service classes. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/go-server.md b/docs/generators/go-server.md
index 440b3461b0f..d57d712e154 100644
--- a/docs/generators/go-server.md
+++ b/docs/generators/go-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for go-server
-sidebar_label: go-server
+title: Documentation for the go-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | go-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Go | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Go server library using OpenAPI-Generator. By default, it will also generate service classes -- which you can disable with the `-Dnoservice` environment variable. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/go.md b/docs/generators/go.md
index a2318c003f3..782f6f05abd 100644
--- a/docs/generators/go.md
+++ b/docs/generators/go.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for go
-sidebar_label: go
+title: Documentation for the go Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | go | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Go | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Go client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/graphql-nodejs-express-server.md b/docs/generators/graphql-nodejs-express-server.md
index ab641eba44b..a1ab7ae06e9 100644
--- a/docs/generators/graphql-nodejs-express-server.md
+++ b/docs/generators/graphql-nodejs-express-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for graphql-nodejs-express-server
-sidebar_label: graphql-nodejs-express-server
+title: Documentation for the graphql-nodejs-express-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | graphql-nodejs-express-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Javascript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a GraphQL Node.js Express server (beta) including it's types, queries, mutations, (resolvers) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/graphql-schema.md b/docs/generators/graphql-schema.md
index 27f6b8ab9eb..84837ae7c6f 100644
--- a/docs/generators/graphql-schema.md
+++ b/docs/generators/graphql-schema.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for graphql-schema
-sidebar_label: graphql-schema
+title: Documentation for the graphql-schema Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | graphql-schema | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SCHEMA | |
+| generator language | GraphQL | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates GraphQL schema files (beta) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/groovy.md b/docs/generators/groovy.md
index 96df596870d..4c2b6f644d5 100644
--- a/docs/generators/groovy.md
+++ b/docs/generators/groovy.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for groovy
-sidebar_label: groovy
+title: Documentation for the groovy Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | groovy | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Groovy | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Groovy API client. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -48,6 +59,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/groovy|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
 ## IMPORT MAPPING
@@ -124,6 +136,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -135,6 +148,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/haskell-http-client.md b/docs/generators/haskell-http-client.md
index f287982ab71..50fe695fa91 100644
--- a/docs/generators/haskell-http-client.md
+++ b/docs/generators/haskell-http-client.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for haskell-http-client
-sidebar_label: haskell-http-client
+title: Documentation for the haskell-http-client Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | haskell-http-client | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Haskell | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Haskell http-client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/haskell-yesod.md b/docs/generators/haskell-yesod.md
index e4f8bd5a362..fcb8ce3d49c 100644
--- a/docs/generators/haskell-yesod.md
+++ b/docs/generators/haskell-yesod.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for haskell-yesod
-sidebar_label: haskell-yesod
+title: Documentation for the haskell-yesod Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | haskell-yesod | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Haskell | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a haskell-yesod server. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/haskell.md b/docs/generators/haskell.md
index 75dfe15ca50..4ac8e5c7fbf 100644
--- a/docs/generators/haskell.md
+++ b/docs/generators/haskell.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for haskell
-sidebar_label: haskell
+title: Documentation for the haskell Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | haskell | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Haskell | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Haskell server and client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/html.md b/docs/generators/html.md
index 0ece134692a..fe176f2cc73 100644
--- a/docs/generators/html.md
+++ b/docs/generators/html.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for html
-sidebar_label: html
+title: Documentation for the html Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | html | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a static HTML file. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/html2.md b/docs/generators/html2.md
index 40dc30a42e4..92f3425056f 100644
--- a/docs/generators/html2.md
+++ b/docs/generators/html2.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for html2
-sidebar_label: html2
+title: Documentation for the html2 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | html2 | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a static HTML file. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/java-camel.md b/docs/generators/java-camel.md
new file mode 100644
index 00000000000..c3849943020
--- /dev/null
+++ b/docs/generators/java-camel.md
@@ -0,0 +1,329 @@
+---
+title: Documentation for the java-camel Generator
+---
+
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-camel | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Camel server (beta). | |
+
+## CONFIG OPTIONS
+These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
+
+| Option | Description | Values | Default |
+| ------ | ----------- | ------ | ------- |
+|additionalEnumTypeAnnotations|Additional annotations for enum type(class level annotations)| |null|
+|additionalModelTypeAnnotations|Additional annotations for model type(class level annotations). List separated by semicolon(;) or new line (Linux or Windows)| |null|
+|allowUnicodeIdentifiers|boolean, toggles whether unicode identifiers are allowed in names or not, default is false| |false|
+|annotationLibrary|Select the complementary documentation annotation library.|<dl><dt>**none**</dt><dd>Do not annotate Model and Api with complementary annotations.</dd><dt>**swagger1**</dt><dd>Annotate Model and Api using the Swagger Annotations 1.x library.</dd><dt>**swagger2**</dt><dd>Annotate Model and Api using the Swagger Annotations 2.x library.</dd></dl>|swagger2|
+|apiFirst|Generate the API from the OAI spec at server compile time (API first approach)| |false|
+|apiPackage|package for generated api classes| |org.openapitools.api|
+|artifactDescription|artifact description in generated pom.xml| |OpenAPI Java|
+|artifactId|artifactId in generated pom.xml. This also becomes part of the generated library's filename| |openapi-spring|
+|artifactUrl|artifact URL in generated pom.xml| |https://github.com/openapitools/openapi-generator|
+|artifactVersion|artifact version in generated pom.xml. This also becomes part of the generated library's filename| |1.0.0|
+|async|use async Callable controllers| |false|
+|basePackage|base package (invokerPackage) for generated code| |org.openapitools|
+|bigDecimalAsString|Treat BigDecimal values as Strings to avoid precision loss.| |false|
+|booleanGetterPrefix|Set booleanGetterPrefix| |get|
+|camelDataformatProperties|list of dataformat properties separated by comma (propertyName1=propertyValue2,...| ||
+|camelRestBindingMode|binding mode to be used by the REST consumer| |auto|
+|camelRestClientRequestValidation|enable validation of the client request to check whether the Content-Type and Accept headers from the client is supported by the Rest-DSL configuration| |false|
+|camelRestComponent|name of the Camel component to use as the REST consumer| |servlet|
+|camelSecurityDefinitions|generate camel security definitions| |true|
+|camelUseDefaulValidationtErrorProcessor|generate default validation error processor| |true|
+|camelValidationErrorProcessor|validation error processor bean name| |validationErrorProcessor|
+|configPackage|configuration package for generated code| |org.openapitools.configuration|
+|dateLibrary|Option. Date library to use|<dl><dt>**joda**</dt><dd>Joda (for legacy app only)</dd><dt>**legacy**</dt><dd>Legacy java.util.Date (if you really have a good reason not to use threetenbp</dd><dt>**java8-localdatetime**</dt><dd>Java 8 using LocalDateTime (for legacy app only)</dd><dt>**java8**</dt><dd>Java 8 native JSR310 (preferred for jdk 1.8+) - note: this also sets &quot;java8&quot; to true</dd><dt>**threetenbp**</dt><dd>Backport of JSR310 (preferred for jdk &lt; 1.8)</dd></dl>|threetenbp|
+|delegatePattern|Whether to generate the server files using the delegate pattern| |false|
+|developerEmail|developer email in generated pom.xml| |team@openapitools.org|
+|developerName|developer name in generated pom.xml| |OpenAPI-Generator Contributors|
+|developerOrganization|developer organization in generated pom.xml| |OpenAPITools.org|
+|developerOrganizationUrl|developer organization URL in generated pom.xml| |http://openapitools.org|
+|disableHtmlEscaping|Disable HTML escaping of JSON strings when using gson (needed to avoid problems with byte[] fields)| |false|
+|disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
+|discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
+|documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd><dt>**springfox**</dt><dd>Generate an OpenAPI 2 (fka Swagger RESTful API Documentation Specification) specification using SpringFox 2.x.</dd><dt>**springdoc**</dt><dd>Generate an OpenAPI 3 specification using SpringDoc.</dd></dl>|springdoc|
+|ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
+|enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
+|fullJavaUtil|whether to use fully qualified name for classes under java.util. This option only works for Java API client| |false|
+|groupId|groupId in generated pom.xml| |org.openapitools|
+|hateoas|Use Spring HATEOAS library to allow adding HATEOAS links| |false|
+|hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |false|
+|ignoreAnyOfInEnum|Ignore anyOf keyword in enum| |false|
+|implicitHeaders|Skip header parameters in the generated API methods using @ApiImplicitParams annotation.| |false|
+|interfaceOnly|Whether to generate only API interface stubs without the server files.| |false|
+|invokerPackage|root package for generated code| |org.openapitools.api|
+|java8|Use Java8 classes instead of third party equivalents. Starting in 5.x, JDK8 is the default and the support for JDK7, JDK6 has been dropped|<dl><dt>**true**</dt><dd>Use Java 8 classes such as Base64. Use java8 default interface when a responseWrapper is used. IMPORTANT: This option has been deprecated as Java 8 is the default.</dd><dt>**false**</dt><dd>Various third party libraries as needed</dd></dl>|true|
+|legacyDiscriminatorBehavior|Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C#have this enabled by default).|<dl><dt>**true**</dt><dd>The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.</dd><dt>**false**</dt><dd>The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.</dd></dl>|true|
+|library|library template (sub-template)|<dl><dt>**spring-boot**</dt><dd>Spring-boot Server application using the SpringFox integration.</dd><dt>**spring-mvc**</dt><dd>Spring-MVC Server application using the SpringFox integration.</dd><dt>**spring-cloud**</dt><dd>Spring-Cloud-Feign client with Spring-Boot auto-configured settings.</dd></dl>|spring-boot|
+|licenseName|The name of the license| |Unlicense|
+|licenseUrl|The URL of the license| |http://unlicense.org|
+|modelPackage|package for generated models| |org.openapitools.model|
+|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
+|parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
+|parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
+|performBeanValidation|Use Bean Validation Impl. to perform BeanValidation| |false|
+|prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
+|reactive|wrap responses in Mono/Flux Reactor types (spring-boot only)| |false|
+|responseWrapper|wrap the responses in given type (Future, Callable, CompletableFuture,ListenableFuture, DeferredResult, RxObservable, RxSingle or fully qualified type)| |null|
+|returnSuccessCode|Generated server returns 2xx code| |false|
+|scmConnection|SCM connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
+|scmDeveloperConnection|SCM developer connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
+|scmUrl|SCM URL in generated pom.xml| |https://github.com/openapitools/openapi-generator|
+|serializableModel|boolean - toggle &quot;implements Serializable&quot; for generated models| |false|
+|singleContentTypes|Whether to select only one produces/consumes content-type by operation.| |false|
+|skipDefaultInterface|Whether to generate default implementations for java8 interfaces| |false|
+|snapshotVersion|Uses a SNAPSHOT version.|<dl><dt>**true**</dt><dd>Use a SnapShot Version</dd><dt>**false**</dt><dd>Use a Release Version</dd></dl>|null|
+|sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
+|sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
+|sourceFolder|source folder for generated code| |src/main/java|
+|swaggerDocketConfig|Generate Spring OpenAPI Docket configuration class.| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
+|title|server title name or client service name| |OpenAPI Spring|
+|unhandledException|Declare operation methods to throw a generic exception and allow unhandled exceptions (useful for Spring `@ControllerAdvice` directives).| |false|
+|useBeanValidation|Use BeanValidation API annotations| |true|
+|useOptional|Use Optional container for optional parameters| |false|
+|useSpringController|Annotate the generated API as a Spring Controller| |false|
+|useTags|use tags for creating interface and controller classnames| |false|
+|virtualService|Generates the virtual service. For more details refer - https://github.com/virtualansoftware/virtualan/wiki| |false|
+|withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
+
+## IMPORT MAPPING
+
+| Type/Alias | Imports |
+| ---------- | ------- |
+|Array|java.util.List|
+|ArrayList|java.util.ArrayList|
+|BigDecimal|java.math.BigDecimal|
+|Date|java.util.Date|
+|DateTime|org.joda.time.*|
+|File|java.io.File|
+|HashMap|java.util.HashMap|
+|LinkedHashSet|java.util.LinkedHashSet|
+|List|java.util.*|
+|LocalDate|org.joda.time.*|
+|LocalDateTime|org.joda.time.*|
+|LocalTime|org.joda.time.*|
+|Map|java.util.Map|
+|Set|java.util.*|
+|Timestamp|java.sql.Timestamp|
+|URI|java.net.URI|
+|UUID|java.util.UUID|
+
+
+## INSTANTIATION TYPES
+
+| Type/Alias | Instantiated By |
+| ---------- | --------------- |
+|array|ArrayList|
+|map|HashMap|
+|set|LinkedHashSet|
+
+
+## LANGUAGE PRIMITIVES
+
+<ul class="column-ul">
+<li>Boolean</li>
+<li>Double</li>
+<li>Float</li>
+<li>Integer</li>
+<li>Long</li>
+<li>Object</li>
+<li>String</li>
+<li>boolean</li>
+<li>byte[]</li>
+</ul>
+
+## RESERVED WORDS
+
+<ul class="column-ul">
+<li>abstract</li>
+<li>apiclient</li>
+<li>apiexception</li>
+<li>apiresponse</li>
+<li>assert</li>
+<li>boolean</li>
+<li>break</li>
+<li>byte</li>
+<li>case</li>
+<li>catch</li>
+<li>char</li>
+<li>class</li>
+<li>configuration</li>
+<li>const</li>
+<li>continue</li>
+<li>default</li>
+<li>do</li>
+<li>double</li>
+<li>else</li>
+<li>enum</li>
+<li>extends</li>
+<li>file</li>
+<li>final</li>
+<li>finally</li>
+<li>float</li>
+<li>for</li>
+<li>goto</li>
+<li>if</li>
+<li>implements</li>
+<li>import</li>
+<li>instanceof</li>
+<li>int</li>
+<li>interface</li>
+<li>list</li>
+<li>localreturntype</li>
+<li>localvaraccept</li>
+<li>localvaraccepts</li>
+<li>localvarauthnames</li>
+<li>localvarcollectionqueryparams</li>
+<li>localvarcontenttype</li>
+<li>localvarcontenttypes</li>
+<li>localvarcookieparams</li>
+<li>localvarformparams</li>
+<li>localvarheaderparams</li>
+<li>localvarpath</li>
+<li>localvarpostbody</li>
+<li>localvarqueryparams</li>
+<li>long</li>
+<li>native</li>
+<li>new</li>
+<li>null</li>
+<li>object</li>
+<li>package</li>
+<li>private</li>
+<li>protected</li>
+<li>public</li>
+<li>return</li>
+<li>short</li>
+<li>static</li>
+<li>strictfp</li>
+<li>stringutil</li>
+<li>super</li>
+<li>switch</li>
+<li>synchronized</li>
+<li>this</li>
+<li>throw</li>
+<li>throws</li>
+<li>transient</li>
+<li>try</li>
+<li>void</li>
+<li>volatile</li>
+<li>while</li>
+</ul>
+
+## FEATURE SET
+
+
+### Client Modification Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasePath|✓|ToolingExtension
+|Authorizations|✗|ToolingExtension
+|UserAgent|✗|ToolingExtension
+|MockServer|✗|ToolingExtension
+
+### Data Type Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Custom|✗|OAS2,OAS3
+|Int32|✓|OAS2,OAS3
+|Int64|✓|OAS2,OAS3
+|Float|✓|OAS2,OAS3
+|Double|✓|OAS2,OAS3
+|Decimal|✓|ToolingExtension
+|String|✓|OAS2,OAS3
+|Byte|✓|OAS2,OAS3
+|Binary|✓|OAS2,OAS3
+|Boolean|✓|OAS2,OAS3
+|Date|✓|OAS2,OAS3
+|DateTime|✓|OAS2,OAS3
+|Password|✓|OAS2,OAS3
+|File|✓|OAS2
+|Array|✓|OAS2,OAS3
+|Maps|✓|ToolingExtension
+|CollectionFormat|✓|OAS2
+|CollectionFormatMulti|✓|OAS2
+|Enum|✓|OAS2,OAS3
+|ArrayOfEnum|✓|ToolingExtension
+|ArrayOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
+|ArrayOfCollectionOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfEnum|✓|ToolingExtension
+|MapOfEnum|✓|ToolingExtension
+|MapOfModel|✓|ToolingExtension
+|MapOfCollectionOfPrimitives|✓|ToolingExtension
+|MapOfCollectionOfModel|✓|ToolingExtension
+|MapOfCollectionOfEnum|✓|ToolingExtension
+
+### Documentation Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Readme|✓|ToolingExtension
+|Model|✓|ToolingExtension
+|Api|✓|ToolingExtension
+
+### Global Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Host|✓|OAS2,OAS3
+|BasePath|✓|OAS2,OAS3
+|Info|✓|OAS2,OAS3
+|Schemes|✗|OAS2,OAS3
+|PartialSchemes|✓|OAS2,OAS3
+|Consumes|✓|OAS2
+|Produces|✓|OAS2
+|ExternalDocumentation|✓|OAS2,OAS3
+|Examples|✓|OAS2,OAS3
+|XMLStructureDefinitions|✓|OAS2,OAS3
+|MultiServer|✗|OAS3
+|ParameterizedServer|✗|OAS3
+|ParameterStyling|✗|OAS3
+|Callbacks|✗|OAS3
+|LinkObjects|✗|OAS3
+
+### Parameter Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Path|✓|OAS2,OAS3
+|Query|✓|OAS2,OAS3
+|Header|✓|OAS2,OAS3
+|Body|✓|OAS2
+|FormUnencoded|✓|OAS2
+|FormMultipart|✓|OAS2
+|Cookie|✗|OAS3
+
+### Schema Support Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Simple|✓|OAS2,OAS3
+|Composite|✓|OAS2,OAS3
+|Polymorphism|✓|OAS2,OAS3
+|Union|✗|OAS3
+
+### Security Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasicAuth|✓|OAS2,OAS3
+|ApiKey|✓|OAS2,OAS3
+|OpenIDConnect|✗|OAS3
+|BearerToken|✗|OAS3
+|OAuth2_Implicit|✓|OAS2,OAS3
+|OAuth2_Password|✓|OAS2,OAS3
+|OAuth2_ClientCredentials|✓|OAS2,OAS3
+|OAuth2_AuthorizationCode|✓|OAS2,OAS3
+
+### Wire Format Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|JSON|✓|OAS2,OAS3
+|XML|✓|OAS2,OAS3
+|PROTOBUF|✗|ToolingExtension
+|Custom|✓|OAS2,OAS3
diff --git a/docs/generators/java-inflector.md b/docs/generators/java-inflector.md
index 309bc1a3dbb..e924a759037 100644
--- a/docs/generators/java-inflector.md
+++ b/docs/generators/java-inflector.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-inflector
-sidebar_label: java-inflector
+title: Documentation for the java-inflector Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-inflector | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Inflector Server application. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -50,6 +61,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/gen/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
 ## IMPORT MAPPING
@@ -122,6 +134,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -133,6 +146,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-micronaut-client.md b/docs/generators/java-micronaut-client.md
index 98ce5396a97..0de7278de01 100644
--- a/docs/generators/java-micronaut-client.md
+++ b/docs/generators/java-micronaut-client.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-micronaut-client
-sidebar_label: java-micronaut-client
+title: Documentation for the java-micronaut-client Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-micronaut-client | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Micronaut Client. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -18,7 +29,6 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |bigDecimalAsString|Treat BigDecimal values as Strings to avoid precision loss.| |false|
 |booleanGetterPrefix|Set booleanGetterPrefix| |get|
 |build|Specify for which build tool to generate files|<dl><dt>**gradle**</dt><dd>Gradle configuration is generated for the project</dd><dt>**all**</dt><dd>Both Gradle and Maven configurations are generated</dd><dt>**maven**</dt><dd>Maven configuration is generated for the project</dd></dl>|all|
-|configPackage|Configuration package for generated code| |org.openapitools.configuration|
 |configureAuth|Configure all the authorization methods as specified in the file| |false|
 |developerEmail|developer email in generated pom.xml| |team@openapitools.org|
 |developerName|developer name in generated pom.xml| |OpenAPI-Generator Contributors|
@@ -38,12 +48,14 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |legacyDiscriminatorBehavior|Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C#have this enabled by default).|<dl><dt>**true**</dt><dd>The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.</dd><dt>**false**</dt><dd>The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.</dd></dl>|true|
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
+|micronautVersion|Micronaut version, only &gt;=3.0.0 versions are supported| |3.2.6|
 |modelPackage|package for generated models| |org.openapitools.model|
 |openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
+|requiredPropertiesInConstructor|Allow only to create models with all the required properties provided in constructor| |true|
 |scmConnection|SCM connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
 |scmDeveloperConnection|SCM developer connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
 |scmUrl|SCM URL in generated pom.xml| |https://github.com/openapitools/openapi-generator|
@@ -53,7 +65,8 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
 |test|Specify which test tool to generate files for|<dl><dt>**junit**</dt><dd>Use JUnit as test tool</dd><dt>**spock**</dt><dd>Use Spock as test tool</dd></dl>|junit|
-|title|Client service name| |OpenAPI Micronaut Client|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
+|title|Client service name| |null|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
@@ -132,6 +145,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -145,6 +159,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-micronaut-server.md b/docs/generators/java-micronaut-server.md
new file mode 100644
index 00000000000..93b25d43d68
--- /dev/null
+++ b/docs/generators/java-micronaut-server.md
@@ -0,0 +1,316 @@
+---
+title: Documentation for the java-micronaut-server Generator
+---
+
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-micronaut-server | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Micronaut Server. | |
+
+## CONFIG OPTIONS
+These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
+
+| Option | Description | Values | Default |
+| ------ | ----------- | ------ | ------- |
+|additionalEnumTypeAnnotations|Additional annotations for enum type(class level annotations)| |null|
+|additionalModelTypeAnnotations|Additional annotations for model type(class level annotations). List separated by semicolon(;) or new line (Linux or Windows)| |null|
+|allowUnicodeIdentifiers|boolean, toggles whether unicode identifiers are allowed in names or not, default is false| |false|
+|artifactDescription|artifact description in generated pom.xml| |OpenAPI Java|
+|artifactId|artifactId in generated pom.xml. This also becomes part of the generated library's filename| |openapi-micronaut|
+|artifactUrl|artifact URL in generated pom.xml| |https://github.com/openapitools/openapi-generator|
+|artifactVersion|artifact version in generated pom.xml. This also becomes part of the generated library's filename| |1.0.0|
+|bigDecimalAsString|Treat BigDecimal values as Strings to avoid precision loss.| |false|
+|booleanGetterPrefix|Set booleanGetterPrefix| |get|
+|build|Specify for which build tool to generate files|<dl><dt>**gradle**</dt><dd>Gradle configuration is generated for the project</dd><dt>**all**</dt><dd>Both Gradle and Maven configurations are generated</dd><dt>**maven**</dt><dd>Maven configuration is generated for the project</dd></dl>|all|
+|controllerPackage|The package in which controllers will be generated| |org.openapitools.api|
+|developerEmail|developer email in generated pom.xml| |team@openapitools.org|
+|developerName|developer name in generated pom.xml| |OpenAPI-Generator Contributors|
+|developerOrganization|developer organization in generated pom.xml| |OpenAPITools.org|
+|developerOrganizationUrl|developer organization URL in generated pom.xml| |http://openapitools.org|
+|disableHtmlEscaping|Disable HTML escaping of JSON strings when using gson (needed to avoid problems with byte[] fields)| |false|
+|disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
+|discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
+|ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
+|enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
+|fullJavaUtil|whether to use fully qualified name for classes under java.util. This option only works for Java API client| |false|
+|generateControllerAsAbstract|Generate an abstract class for controller to be extended. (apiPackage is then used for the abstract class, and controllerPackage is used for implementation that extends it.)| |false|
+|generateControllerFromExamples|Generate the implementation of controller and tests from parameter and return examples that will verify that the api works as desired (for testing)| |false|
+|groupId|groupId in generated pom.xml| |org.openapitools|
+|hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |false|
+|ignoreAnyOfInEnum|Ignore anyOf keyword in enum| |false|
+|invokerPackage|root package for generated code| |org.openapitools|
+|java8|Use Java8 classes instead of third party equivalents. Starting in 5.x, JDK8 is the default and the support for JDK7, JDK6 has been dropped|<dl><dt>**true**</dt><dd>Use Java 8 classes such as Base64</dd><dt>**false**</dt><dd>Various third party libraries as needed</dd></dl>|true|
+|legacyDiscriminatorBehavior|Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C#have this enabled by default).|<dl><dt>**true**</dt><dd>The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.</dd><dt>**false**</dt><dd>The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.</dd></dl>|true|
+|licenseName|The name of the license| |Unlicense|
+|licenseUrl|The URL of the license| |http://unlicense.org|
+|micronautVersion|Micronaut version, only &gt;=3.0.0 versions are supported| |3.2.6|
+|modelPackage|package for generated models| |org.openapitools.model|
+|openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
+|parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
+|parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
+|parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
+|prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
+|requiredPropertiesInConstructor|Allow only to create models with all the required properties provided in constructor| |true|
+|scmConnection|SCM connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
+|scmDeveloperConnection|SCM developer connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
+|scmUrl|SCM URL in generated pom.xml| |https://github.com/openapitools/openapi-generator|
+|serializableModel|boolean - toggle &quot;implements Serializable&quot; for generated models| |false|
+|snapshotVersion|Uses a SNAPSHOT version.|<dl><dt>**true**</dt><dd>Use a SnapShot Version</dd><dt>**false**</dt><dd>Use a Release Version</dd></dl>|null|
+|sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
+|sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
+|sourceFolder|source folder for generated code| |src/main/java|
+|test|Specify which test tool to generate files for|<dl><dt>**junit**</dt><dd>Use JUnit as test tool</dd><dt>**spock**</dt><dd>Use Spock as test tool</dd></dl>|junit|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
+|title|Client service name| |null|
+|useAuth|Whether to import authorization and to annotate controller methods accordingly| |true|
+|useBeanValidation|Use BeanValidation API annotations| |true|
+|withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
+
+## IMPORT MAPPING
+
+| Type/Alias | Imports |
+| ---------- | ------- |
+|Array|java.util.List|
+|ArrayList|java.util.ArrayList|
+|BigDecimal|java.math.BigDecimal|
+|CompletedFileUpload|io.micronaut.http.multipart.CompletedFileUpload|
+|Date|java.util.Date|
+|DateTime|org.joda.time.*|
+|File|java.io.File|
+|HashMap|java.util.HashMap|
+|LinkedHashSet|java.util.LinkedHashSet|
+|List|java.util.*|
+|LocalDate|org.joda.time.*|
+|LocalDateTime|org.joda.time.*|
+|LocalTime|org.joda.time.*|
+|Map|java.util.Map|
+|Set|java.util.*|
+|Timestamp|java.sql.Timestamp|
+|URI|java.net.URI|
+|UUID|java.util.UUID|
+
+
+## INSTANTIATION TYPES
+
+| Type/Alias | Instantiated By |
+| ---------- | --------------- |
+|array|ArrayList|
+|map|HashMap|
+|set|LinkedHashSet|
+
+
+## LANGUAGE PRIMITIVES
+
+<ul class="column-ul">
+<li>Boolean</li>
+<li>Double</li>
+<li>Float</li>
+<li>Integer</li>
+<li>Long</li>
+<li>Object</li>
+<li>String</li>
+<li>boolean</li>
+<li>byte[]</li>
+</ul>
+
+## RESERVED WORDS
+
+<ul class="column-ul">
+<li>abstract</li>
+<li>apiclient</li>
+<li>apiexception</li>
+<li>apiresponse</li>
+<li>application</li>
+<li>assert</li>
+<li>authorization</li>
+<li>body</li>
+<li>boolean</li>
+<li>break</li>
+<li>byte</li>
+<li>case</li>
+<li>catch</li>
+<li>char</li>
+<li>class</li>
+<li>client</li>
+<li>configuration</li>
+<li>const</li>
+<li>continue</li>
+<li>cookie</li>
+<li>default</li>
+<li>do</li>
+<li>double</li>
+<li>else</li>
+<li>enum</li>
+<li>extends</li>
+<li>file</li>
+<li>final</li>
+<li>finally</li>
+<li>float</li>
+<li>for</li>
+<li>format</li>
+<li>goto</li>
+<li>header</li>
+<li>if</li>
+<li>implements</li>
+<li>import</li>
+<li>instanceof</li>
+<li>int</li>
+<li>interface</li>
+<li>list</li>
+<li>localreturntype</li>
+<li>localvaraccept</li>
+<li>localvaraccepts</li>
+<li>localvarauthnames</li>
+<li>localvarcollectionqueryparams</li>
+<li>localvarcontenttype</li>
+<li>localvarcontenttypes</li>
+<li>localvarcookieparams</li>
+<li>localvarformparams</li>
+<li>localvarheaderparams</li>
+<li>localvarpath</li>
+<li>localvarpostbody</li>
+<li>localvarqueryparams</li>
+<li>long</li>
+<li>native</li>
+<li>new</li>
+<li>null</li>
+<li>object</li>
+<li>package</li>
+<li>pathvariable</li>
+<li>private</li>
+<li>protected</li>
+<li>public</li>
+<li>queryparam</li>
+<li>queryvalue</li>
+<li>return</li>
+<li>short</li>
+<li>static</li>
+<li>strictfp</li>
+<li>stringutil</li>
+<li>super</li>
+<li>switch</li>
+<li>synchronized</li>
+<li>this</li>
+<li>throw</li>
+<li>throws</li>
+<li>transient</li>
+<li>try</li>
+<li>void</li>
+<li>volatile</li>
+<li>while</li>
+</ul>
+
+## FEATURE SET
+
+
+### Client Modification Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasePath|✓|ToolingExtension
+|Authorizations|✗|ToolingExtension
+|UserAgent|✗|ToolingExtension
+|MockServer|✗|ToolingExtension
+
+### Data Type Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Custom|✗|OAS2,OAS3
+|Int32|✓|OAS2,OAS3
+|Int64|✓|OAS2,OAS3
+|Float|✓|OAS2,OAS3
+|Double|✓|OAS2,OAS3
+|Decimal|✓|ToolingExtension
+|String|✓|OAS2,OAS3
+|Byte|✓|OAS2,OAS3
+|Binary|✓|OAS2,OAS3
+|Boolean|✓|OAS2,OAS3
+|Date|✓|OAS2,OAS3
+|DateTime|✓|OAS2,OAS3
+|Password|✓|OAS2,OAS3
+|File|✓|OAS2
+|Array|✓|OAS2,OAS3
+|Maps|✓|ToolingExtension
+|CollectionFormat|✓|OAS2
+|CollectionFormatMulti|✓|OAS2
+|Enum|✓|OAS2,OAS3
+|ArrayOfEnum|✓|ToolingExtension
+|ArrayOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
+|ArrayOfCollectionOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfEnum|✓|ToolingExtension
+|MapOfEnum|✓|ToolingExtension
+|MapOfModel|✓|ToolingExtension
+|MapOfCollectionOfPrimitives|✓|ToolingExtension
+|MapOfCollectionOfModel|✓|ToolingExtension
+|MapOfCollectionOfEnum|✓|ToolingExtension
+
+### Documentation Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Readme|✓|ToolingExtension
+|Model|✓|ToolingExtension
+|Api|✓|ToolingExtension
+
+### Global Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Host|✓|OAS2,OAS3
+|BasePath|✓|OAS2,OAS3
+|Info|✓|OAS2,OAS3
+|Schemes|✗|OAS2,OAS3
+|PartialSchemes|✓|OAS2,OAS3
+|Consumes|✓|OAS2
+|Produces|✓|OAS2
+|ExternalDocumentation|✓|OAS2,OAS3
+|Examples|✓|OAS2,OAS3
+|XMLStructureDefinitions|✗|OAS2,OAS3
+|MultiServer|✗|OAS3
+|ParameterizedServer|✗|OAS3
+|ParameterStyling|✗|OAS3
+|Callbacks|✗|OAS3
+|LinkObjects|✗|OAS3
+
+### Parameter Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Path|✓|OAS2,OAS3
+|Query|✓|OAS2,OAS3
+|Header|✓|OAS2,OAS3
+|Body|✓|OAS2
+|FormUnencoded|✓|OAS2
+|FormMultipart|✓|OAS2
+|Cookie|✓|OAS3
+
+### Schema Support Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Simple|✓|OAS2,OAS3
+|Composite|✓|OAS2,OAS3
+|Polymorphism|✗|OAS2,OAS3
+|Union|✗|OAS3
+
+### Security Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasicAuth|✓|OAS2,OAS3
+|ApiKey|✓|OAS2,OAS3
+|OpenIDConnect|✓|OAS3
+|BearerToken|✗|OAS3
+|OAuth2_Implicit|✓|OAS2,OAS3
+|OAuth2_Password|✓|OAS2,OAS3
+|OAuth2_ClientCredentials|✓|OAS2,OAS3
+|OAuth2_AuthorizationCode|✓|OAS2,OAS3
+
+### Wire Format Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|JSON|✓|OAS2,OAS3
+|XML|✓|OAS2,OAS3
+|PROTOBUF|✗|ToolingExtension
+|Custom|✗|OAS2,OAS3
diff --git a/docs/generators/java-msf4j.md b/docs/generators/java-msf4j.md
index d3a7aa4bd21..79aa36220fd 100644
--- a/docs/generators/java-msf4j.md
+++ b/docs/generators/java-msf4j.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-msf4j
-sidebar_label: java-msf4j
+title: Documentation for the java-msf4j Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-msf4j | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Micro Service based on WSO2 Microservices Framework for Java (MSF4J) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -53,6 +64,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useTags|use tags for creating interface and controller classnames| |false|
@@ -128,6 +140,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -139,6 +152,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-pkmst.md b/docs/generators/java-pkmst.md
index 1f7b1f7e262..f6b391ea431 100644
--- a/docs/generators/java-pkmst.md
+++ b/docs/generators/java-pkmst.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-pkmst
-sidebar_label: java-pkmst
+title: Documentation for the java-pkmst Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-pkmst | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PKMST SpringBoot Server application using the SpringFox integration. Also enables EurekaServerClient / Zipkin / Spring-Boot admin | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -55,6 +66,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
 |springBootAdminUri|Spring-Boot URI| |null|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|server title name or client service name| |null|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 |zipkinUri|Zipkin URI| |null|
@@ -129,6 +141,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -140,6 +153,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-play-framework.md b/docs/generators/java-play-framework.md
index 851e0c567a1..002dc7eae11 100644
--- a/docs/generators/java-play-framework.md
+++ b/docs/generators/java-play-framework.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-play-framework
-sidebar_label: java-play-framework
+title: Documentation for the java-play-framework Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-play-framework | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Play Framework Server application. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -55,6 +66,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |/app|
 |supportAsync|Support Async operations| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|server title name or client service name| |openapi-java-playframework|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useInterfaces|Makes the controllerImp implements an interface to facilitate automatic completion when updating from version x to y of your spec| |true|
@@ -132,6 +144,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -143,6 +156,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-undertow-server.md b/docs/generators/java-undertow-server.md
index f240e949090..6aa1f1fe2a1 100644
--- a/docs/generators/java-undertow-server.md
+++ b/docs/generators/java-undertow-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-undertow-server
-sidebar_label: java-undertow-server
+title: Documentation for the java-undertow-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-undertow-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Undertow Server application (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -50,6 +61,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
 ## IMPORT MAPPING
@@ -122,6 +134,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -133,6 +146,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-vertx-web.md b/docs/generators/java-vertx-web.md
index 01135987760..4089bedda4a 100644
--- a/docs/generators/java-vertx-web.md
+++ b/docs/generators/java-vertx-web.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-vertx-web
-sidebar_label: java-vertx-web
+title: Documentation for the java-vertx-web Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-vertx-web | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java Vert.x-Web Server (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -50,6 +61,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
 ## IMPORT MAPPING
@@ -122,6 +134,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -133,6 +146,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java-vertx.md b/docs/generators/java-vertx.md
index 435c1a12266..27ba174790d 100644
--- a/docs/generators/java-vertx.md
+++ b/docs/generators/java-vertx.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java-vertx
-sidebar_label: java-vertx
+title: Documentation for the java-vertx Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java-vertx | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a java-Vert.X Server library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -52,6 +63,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |vertxSwaggerRouterVersion|Specify the version of the swagger router library| |null|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
@@ -125,6 +137,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -136,6 +149,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/java.md b/docs/generators/java.md
index cdab88d701e..c33081e2df5 100644
--- a/docs/generators/java.md
+++ b/docs/generators/java.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for java
-sidebar_label: java
+title: Documentation for the java Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | java | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java client library (HTTP lib: Jersey (1.x, 2.x), Retrofit (2.x), OpenFeign (10.x) and more. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -51,7 +62,6 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |performBeanValidation|Perform BeanValidation| |false|
-|playVersion|Version of Play! Framework (possible values &quot;play24&quot; (Deprecated), &quot;play25&quot; (Deprecated), &quot;play26&quot; (Default))| |null|
 |prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
 |scmConnection|SCM connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
 |scmDeveloperConnection|SCM developer connection in generated pom.xml| |scm:git:git@github.com:openapitools/openapi-generator.git|
@@ -63,15 +73,15 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
 |supportStreaming|Support streaming endpoint (beta)| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |useAbstractionForFiles|Use alternative types instead of java.io.File to allow passing bytes without a file on disk. Available on resttemplate, webclient, libraries| |false|
 |useBeanValidation|Use BeanValidation API annotations| |false|
 |useGzipFeature|Send gzip-encoded requests| |false|
 |usePlayWS|Use Play! Async HTTP client (Play WS API)| |false|
 |useReflectionEqualsHashCode|Use org.apache.commons.lang3.builder for equals and hashCode in the models. WARNING: This will fail under a security manager, unless the appropriate permissions are set up correctly and also there's potential performance impact.| |false|
 |useRuntimeException|Use RuntimeException instead of Exception| |false|
-|useRxJava|Whether to use the RxJava adapter with the retrofit2 library. IMPORTANT: this option has been deprecated and will be removed in the 5.x release.| |false|
-|useRxJava2|Whether to use the RxJava2 adapter with the retrofit2 library.| |false|
-|useRxJava3|Whether to use the RxJava3 adapter with the retrofit2 library.| |false|
+|useRxJava2|Whether to use the RxJava2 adapter with the retrofit2 library. IMPORTANT: This option has been deprecated.| |false|
+|useRxJava3|Whether to use the RxJava3 adapter with the retrofit2 library. IMPORTANT: This option has been deprecated.| |false|
 |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|
 
 ## IMPORT MAPPING
@@ -144,6 +154,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -155,6 +166,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/javascript-apollo.md b/docs/generators/javascript-apollo.md
index 260fc980945..e91486057e1 100644
--- a/docs/generators/javascript-apollo.md
+++ b/docs/generators/javascript-apollo.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for javascript-apollo
-sidebar_label: javascript-apollo
+title: Documentation for the javascript-apollo Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | javascript-apollo | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | Javascript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a JavaScript client library (beta) using Apollo RESTDatasource. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/javascript-closure-angular.md b/docs/generators/javascript-closure-angular.md
index 891b35cb933..2f78d0e865e 100644
--- a/docs/generators/javascript-closure-angular.md
+++ b/docs/generators/javascript-closure-angular.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for javascript-closure-angular
-sidebar_label: javascript-closure-angular
+title: Documentation for the javascript-closure-angular Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | javascript-closure-angular | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Javascript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Javascript AngularJS client library (beta) annotated with Google Closure Compiler annotations(https://developers.google.com/closure/compiler/docs/js-for-compiler?hl=en) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/javascript-flowtyped.md b/docs/generators/javascript-flowtyped.md
index a6fcea0533c..48e249aa7f6 100644
--- a/docs/generators/javascript-flowtyped.md
+++ b/docs/generators/javascript-flowtyped.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for javascript-flowtyped
-sidebar_label: javascript-flowtyped
+title: Documentation for the javascript-flowtyped Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | javascript-flowtyped | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Javascript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Javascript client library (beta) using Flow types and Fetch API. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/javascript.md b/docs/generators/javascript.md
index 962b9ffc40e..aa5f7aaaca6 100644
--- a/docs/generators/javascript.md
+++ b/docs/generators/javascript.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for javascript
-sidebar_label: javascript
+title: Documentation for the javascript Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | javascript | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Javascript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a JavaScript client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/jaxrs-cxf-cdi.md b/docs/generators/jaxrs-cxf-cdi.md
index c46ec4c9631..9ac40926c75 100644
--- a/docs/generators/jaxrs-cxf-cdi.md
+++ b/docs/generators/jaxrs-cxf-cdi.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-cxf-cdi
-sidebar_label: jaxrs-cxf-cdi
+title: Documentation for the jaxrs-cxf-cdi Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-cxf-cdi | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS Server according to JAXRS 2.0 specification, assuming an Apache CXF runtime and a Java EE runtime with CDI enabled. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -59,6 +70,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/gen/java|
 |supportAsync|Wrap responses in CompletionStage type, allowing asynchronous computation (requires JAX-RS 2.1).| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useSwaggerAnnotations|Whether to generate Swagger annotations.| |true|
@@ -135,6 +147,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -146,6 +159,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-cxf-client.md b/docs/generators/jaxrs-cxf-client.md
index ad1c6090036..cd9d4fee230 100644
--- a/docs/generators/jaxrs-cxf-client.md
+++ b/docs/generators/jaxrs-cxf-client.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-cxf-client
-sidebar_label: jaxrs-cxf-client
+title: Documentation for the jaxrs-cxf-client Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-cxf-client | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS Client based on Apache CXF framework. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -50,6 +61,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/gen/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |useBeanValidation|Use BeanValidation API annotations| |false|
 |useGenericResponse|Use generic response| |false|
 |useGzipFeatureForTests|Use Gzip Feature for tests| |false|
@@ -126,6 +138,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -137,6 +150,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-cxf-extended.md b/docs/generators/jaxrs-cxf-extended.md
index 0eef8cacd4e..7518926c80c 100644
--- a/docs/generators/jaxrs-cxf-extended.md
+++ b/docs/generators/jaxrs-cxf-extended.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-cxf-extended
-sidebar_label: jaxrs-cxf-extended
+title: Documentation for the jaxrs-cxf-extended Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-cxf-extended | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Extends jaxrs-cxf with options to generate a functional mock server. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -62,6 +73,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |supportMultipleSpringServices|Support generation of Spring services from multiple specifications| |false|
 |testDataControlFile|JSON file to control test data generation| |null|
 |testDataFile|JSON file to contain generated test data| |null|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useAnnotatedBasePath|Use @Path annotations for basePath| |false|
 |useBeanValidation|Use BeanValidation API annotations| |true|
@@ -149,6 +161,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -160,6 +173,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-cxf.md b/docs/generators/jaxrs-cxf.md
index 80b178858a3..ca2506a6033 100644
--- a/docs/generators/jaxrs-cxf.md
+++ b/docs/generators/jaxrs-cxf.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-cxf
-sidebar_label: jaxrs-cxf
+title: Documentation for the jaxrs-cxf Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-cxf | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS Server application based on Apache CXF framework. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -57,6 +68,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useAnnotatedBasePath|Use @Path annotations for basePath| |false|
 |useBeanValidation|Use BeanValidation API annotations| |true|
@@ -144,6 +156,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -155,6 +168,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-jersey.md b/docs/generators/jaxrs-jersey.md
index 15584410d1f..390aeca70a0 100644
--- a/docs/generators/jaxrs-jersey.md
+++ b/docs/generators/jaxrs-jersey.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-jersey
-sidebar_label: jaxrs-jersey
+title: Documentation for the jaxrs-jersey Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-jersey | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS Server application based on Jersey framework. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -54,6 +65,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
 |supportJava6|Whether to support Java6 with the Jersey1/2 library.| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useTags|use tags for creating interface and controller classnames| |false|
@@ -129,6 +141,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -140,6 +153,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-resteasy-eap.md b/docs/generators/jaxrs-resteasy-eap.md
index 247353cbb32..9a63b82d1ce 100644
--- a/docs/generators/jaxrs-resteasy-eap.md
+++ b/docs/generators/jaxrs-resteasy-eap.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-resteasy-eap
-sidebar_label: jaxrs-resteasy-eap
+title: Documentation for the jaxrs-resteasy-eap Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-resteasy-eap | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS-Resteasy Server application. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -53,6 +64,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useSwaggerFeature|Use dynamic Swagger generator| |false|
@@ -129,6 +141,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -140,6 +153,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-resteasy.md b/docs/generators/jaxrs-resteasy.md
index ff9fab072fd..fea68a9800c 100644
--- a/docs/generators/jaxrs-resteasy.md
+++ b/docs/generators/jaxrs-resteasy.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-resteasy
-sidebar_label: jaxrs-resteasy
+title: Documentation for the jaxrs-resteasy Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-resteasy | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS-Resteasy Server application. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -53,6 +64,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useTags|use tags for creating interface and controller classnames| |false|
@@ -128,6 +140,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -139,6 +152,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jaxrs-spec.md b/docs/generators/jaxrs-spec.md
index a29e8a93178..61aa2962a0c 100644
--- a/docs/generators/jaxrs-spec.md
+++ b/docs/generators/jaxrs-spec.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jaxrs-spec
-sidebar_label: jaxrs-spec
+title: Documentation for the jaxrs-spec Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jaxrs-spec | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java JAXRS Server according to JAXRS 2.0 specification. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -59,6 +70,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
 |supportAsync|Wrap responses in CompletionStage type, allowing asynchronous computation (requires JAX-RS 2.1).| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|a title describing the application| |OpenAPI Server|
 |useBeanValidation|Use BeanValidation API annotations| |true|
 |useSwaggerAnnotations|Whether to generate Swagger annotations.| |true|
@@ -135,6 +147,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -146,6 +159,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/jmeter.md b/docs/generators/jmeter.md
index 71584a1e793..83b447c9732 100644
--- a/docs/generators/jmeter.md
+++ b/docs/generators/jmeter.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for jmeter
-sidebar_label: jmeter
+title: Documentation for the jmeter Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | jmeter | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a JMeter .jmx file. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/k6.md b/docs/generators/k6.md
index 529527a890c..8cbeda61021 100644
--- a/docs/generators/k6.md
+++ b/docs/generators/k6.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for k6
-sidebar_label: k6
+title: Documentation for the k6 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | k6 | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | k6 | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a k6 script (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/kotlin-server-deprecated.md b/docs/generators/kotlin-server-deprecated.md
index 7e53620aa6e..3e7884c9e66 100644
--- a/docs/generators/kotlin-server-deprecated.md
+++ b/docs/generators/kotlin-server-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for kotlin-server-deprecated
-sidebar_label: kotlin-server-deprecated
+title: Documentation for the kotlin-server-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | kotlin-server-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | SERVER | |
+| generator language | Kotlin | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Kotlin server (Ktor v1.1.3). IMPORTANT: this generator has been deprecated. Please migrate to `kotlin-server` which supports Ktor v1.5.2+. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/kotlin-server.md b/docs/generators/kotlin-server.md
index 0c0228d8a8c..9fa866983a4 100644
--- a/docs/generators/kotlin-server.md
+++ b/docs/generators/kotlin-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for kotlin-server
-sidebar_label: kotlin-server
+title: Documentation for the kotlin-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | kotlin-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Kotlin | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Kotlin server. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -19,15 +30,19 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |featureLocations|Generates routes in a typed way, for both: constructing URLs and reading the parameters.| |true|
 |featureMetrics|Enables metrics feature.| |true|
 |groupId|Generated artifact package's organization (i.e. maven groupId).| |org.openapitools|
-|library|library template (sub-template)|<dl><dt>**ktor**</dt><dd>ktor framework</dd></dl>|ktor|
+|interfaceOnly|Whether to generate only API interface stubs without the server files. This option is currently supported only when using jaxrs-spec library.| |false|
+|library|library template (sub-template)|<dl><dt>**ktor**</dt><dd>ktor framework</dd><dt>**jaxrs-spec**</dt><dd>JAX-RS spec only</dd></dl>|ktor|
 |modelMutable|Create mutable models| |false|
 |packageName|Generated artifact package name.| |org.openapitools.server|
 |parcelizeModels|toggle &quot;@Parcelize&quot; for generated models| |null|
+|returnResponse|Whether generate API interface should return javax.ws.rs.core.Response instead of a deserialized entity. Only useful if interfaceOnly is true. This option is currently supported only when using jaxrs-spec library.| |false|
 |serializableModel|boolean - toggle &quot;implements Serializable&quot; for generated models| |null|
 |serializationLibrary|What serialization library to use: 'moshi' (default), or 'gson' or 'jackson'| |moshi|
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |null|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |null|
 |sourceFolder|source folder for generated code| |src/main/kotlin|
+|useBeanValidation|Use BeanValidation API annotations. This option is currently supported only when using jaxrs-spec library.| |false|
+|useCoroutines|Whether to use the Coroutines. This option is currently supported only when using jaxrs-spec library.| |false|
 
 ## IMPORT MAPPING
 
diff --git a/docs/generators/kotlin-spring.md b/docs/generators/kotlin-spring.md
index 5cd67ff64aa..20a0ab7cd69 100644
--- a/docs/generators/kotlin-spring.md
+++ b/docs/generators/kotlin-spring.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for kotlin-spring
-sidebar_label: kotlin-spring
+title: Documentation for the kotlin-spring Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | kotlin-spring | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Kotlin | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Kotlin Spring application. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/kotlin-vertx.md b/docs/generators/kotlin-vertx.md
index 02d608e5274..123104743a0 100644
--- a/docs/generators/kotlin-vertx.md
+++ b/docs/generators/kotlin-vertx.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for kotlin-vertx
-sidebar_label: kotlin-vertx
+title: Documentation for the kotlin-vertx Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | kotlin-vertx | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Kotlin | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a kotlin-vertx server. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/kotlin.md b/docs/generators/kotlin.md
index 786ff7013eb..64c36540bea 100644
--- a/docs/generators/kotlin.md
+++ b/docs/generators/kotlin.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for kotlin
-sidebar_label: kotlin
+title: Documentation for the kotlin Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | kotlin | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Kotlin | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Kotlin client. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/ktorm-schema.md b/docs/generators/ktorm-schema.md
index 7a45b88b69a..4ee60417519 100644
--- a/docs/generators/ktorm-schema.md
+++ b/docs/generators/ktorm-schema.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ktorm-schema
-sidebar_label: ktorm-schema
+title: Documentation for the ktorm-schema Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ktorm-schema | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SCHEMA | |
+| generator language | Ktorm | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a kotlin-ktorm schema (beta) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/lua.md b/docs/generators/lua.md
index 6f9f4a80eaf..cf2ece49ed1 100644
--- a/docs/generators/lua.md
+++ b/docs/generators/lua.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for lua
-sidebar_label: lua
+title: Documentation for the lua Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | lua | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | Lua | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Lua client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/markdown.md b/docs/generators/markdown.md
index 4d87a35f964..c930ef6fd68 100644
--- a/docs/generators/markdown.md
+++ b/docs/generators/markdown.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for markdown
-sidebar_label: markdown
+title: Documentation for the markdown Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | markdown | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a markdown documentation. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/mysql-schema.md b/docs/generators/mysql-schema.md
index 8526ade4f06..656452b91a6 100644
--- a/docs/generators/mysql-schema.md
+++ b/docs/generators/mysql-schema.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for mysql-schema
-sidebar_label: mysql-schema
+title: Documentation for the mysql-schema Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | mysql-schema | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SCHEMA | |
+| generator language | Mysql | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a MySQL schema based on the model or schema defined in the OpenAPI specification (v2, v3). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/nim.md b/docs/generators/nim.md
index 3d90efad159..2cf0c86e25a 100644
--- a/docs/generators/nim.md
+++ b/docs/generators/nim.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for nim
-sidebar_label: nim
+title: Documentation for the nim Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | nim | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | Nim | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a nim client (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/nodejs-express-server.md b/docs/generators/nodejs-express-server.md
index 9fffa3c28b7..ec3e45fa4ee 100644
--- a/docs/generators/nodejs-express-server.md
+++ b/docs/generators/nodejs-express-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for nodejs-express-server
-sidebar_label: nodejs-express-server
+title: Documentation for the nodejs-express-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | nodejs-express-server | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Javascript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a NodeJS Express server (alpha). IMPORTANT: this generator may subject to breaking changes without further notice). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/objc.md b/docs/generators/objc.md
index ad51253f978..b76a06f29a3 100644
--- a/docs/generators/objc.md
+++ b/docs/generators/objc.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for objc
-sidebar_label: objc
+title: Documentation for the objc Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | objc | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Objective-C | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an Objective-C client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/ocaml.md b/docs/generators/ocaml.md
index 597f07b8411..fec524c3f16 100644
--- a/docs/generators/ocaml.md
+++ b/docs/generators/ocaml.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ocaml
-sidebar_label: ocaml
+title: Documentation for the ocaml Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ocaml | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | OCaml | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates an OCaml client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/openapi-yaml.md b/docs/generators/openapi-yaml.md
index 4476c790000..854f487d343 100644
--- a/docs/generators/openapi-yaml.md
+++ b/docs/generators/openapi-yaml.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for openapi-yaml
-sidebar_label: openapi-yaml
+title: Documentation for the openapi-yaml Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | openapi-yaml | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Creates a static openapi.yaml file (OpenAPI spec v3). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/openapi.md b/docs/generators/openapi.md
index 53ea3bf812c..75573383de4 100644
--- a/docs/generators/openapi.md
+++ b/docs/generators/openapi.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for openapi
-sidebar_label: openapi
+title: Documentation for the openapi Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | openapi | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Creates a static openapi.json file (OpenAPI spec v3.0). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/perl.md b/docs/generators/perl.md
index 910abd78432..9fd91025c36 100644
--- a/docs/generators/perl.md
+++ b/docs/generators/perl.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for perl
-sidebar_label: perl
+title: Documentation for the perl Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | perl | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Perl | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Perl client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-dt.md b/docs/generators/php-dt.md
index a4a6eac2b73..ad004234dcc 100644
--- a/docs/generators/php-dt.md
+++ b/docs/generators/php-dt.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-dt
-sidebar_label: php-dt
+title: Documentation for the php-dt Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-dt | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP client relying on Data Transfer ( https://github.com/Articus/DataTransfer ) and compliant with PSR-7, PSR-11, PSR-17 and PSR-18. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-laravel.md b/docs/generators/php-laravel.md
index 09e61d56c13..bdce19bad5e 100644
--- a/docs/generators/php-laravel.md
+++ b/docs/generators/php-laravel.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-laravel
-sidebar_label: php-laravel
+title: Documentation for the php-laravel Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-laravel | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP laravel server library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-lumen.md b/docs/generators/php-lumen.md
index 562b26a589d..ad7f5afc061 100644
--- a/docs/generators/php-lumen.md
+++ b/docs/generators/php-lumen.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-lumen
-sidebar_label: php-lumen
+title: Documentation for the php-lumen Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-lumen | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP Lumen server library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-mezzio-ph.md b/docs/generators/php-mezzio-ph.md
index 7abb3408bca..18854d244ef 100644
--- a/docs/generators/php-mezzio-ph.md
+++ b/docs/generators/php-mezzio-ph.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-mezzio-ph
-sidebar_label: php-mezzio-ph
+title: Documentation for the php-mezzio-ph Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-mezzio-ph | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates PHP server stub using Mezzio ( https://docs.mezzio.dev/mezzio/ ) and Path Handler ( https://github.com/Articus/PathHandler ). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-silex-deprecated.md b/docs/generators/php-silex-deprecated.md
index 9b4d5b39b63..38d5c63f112 100644
--- a/docs/generators/php-silex-deprecated.md
+++ b/docs/generators/php-silex-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-silex-deprecated
-sidebar_label: php-silex-deprecated
+title: Documentation for the php-silex-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-silex-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP Silex server library. IMPORTANT NOTE: this generator is no longer actively maintained. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-slim-deprecated.md b/docs/generators/php-slim-deprecated.md
index 15c4d36ba80..4163fda38ef 100644
--- a/docs/generators/php-slim-deprecated.md
+++ b/docs/generators/php-slim-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-slim-deprecated
-sidebar_label: php-slim-deprecated
+title: Documentation for the php-slim-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-slim-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP Slim Framework server library. IMPORTANT NOTE: this generator (Slim 3.x)  is no longer actively maintained so please use 'php-slim4' generator instead. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-slim4.md b/docs/generators/php-slim4.md
index ca1bd3b6a10..0c56d968d14 100644
--- a/docs/generators/php-slim4.md
+++ b/docs/generators/php-slim4.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-slim4
-sidebar_label: php-slim4
+title: Documentation for the php-slim4 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-slim4 | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP Slim 4 Framework server library(with Mock server). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php-symfony.md b/docs/generators/php-symfony.md
index 0a231dbd2e4..e602a0570af 100644
--- a/docs/generators/php-symfony.md
+++ b/docs/generators/php-symfony.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php-symfony
-sidebar_label: php-symfony
+title: Documentation for the php-symfony Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php-symfony | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP Symfony server bundle. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/php.md b/docs/generators/php.md
index c84e12c36f6..f7a74f48c6a 100644
--- a/docs/generators/php.md
+++ b/docs/generators/php.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for php
-sidebar_label: php
+title: Documentation for the php Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | php | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | PHP | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PHP client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/plantuml.md b/docs/generators/plantuml.md
index 7a37ad0d187..033b995b72b 100644
--- a/docs/generators/plantuml.md
+++ b/docs/generators/plantuml.md
@@ -1,8 +1,18 @@
 ---
-title: Config Options for plantuml
-sidebar_label: plantuml
+title: Documentation for the plantuml Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | plantuml | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | DOCUMENTATION | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a plantuml documentation. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/powershell.md b/docs/generators/powershell.md
index c822e241889..f35ad8599ac 100644
--- a/docs/generators/powershell.md
+++ b/docs/generators/powershell.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for powershell
-sidebar_label: powershell
+title: Documentation for the powershell Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | powershell | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | PowerShell | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a PowerShell API client (beta) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/protobuf-schema.md b/docs/generators/protobuf-schema.md
index a7d1f1d095b..eb8d398cba9 100644
--- a/docs/generators/protobuf-schema.md
+++ b/docs/generators/protobuf-schema.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for protobuf-schema
-sidebar_label: protobuf-schema
+title: Documentation for the protobuf-schema Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | protobuf-schema | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SCHEMA | |
+| generator language | Protocol Buffers (Protobuf) | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates gRPC and protocol buffer schema files (beta) | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/python-aiohttp.md b/docs/generators/python-aiohttp.md
index 14ffd174221..0fea01b13bd 100644
--- a/docs/generators/python-aiohttp.md
+++ b/docs/generators/python-aiohttp.md
@@ -1,8 +1,20 @@
 ---
-title: Config Options for python-aiohttp
-sidebar_label: python-aiohttp
+title: Documentation for the python-aiohttp Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python-aiohttp | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Python | |
+| generator language version | 3.5.2+ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Python server library using the Connexion project. By default, it will also generate service classes -- which you can disable with the `-Dnoservice` environment variable. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/python-blueplanet.md b/docs/generators/python-blueplanet.md
index 049e3424ebb..2445094ea2f 100644
--- a/docs/generators/python-blueplanet.md
+++ b/docs/generators/python-blueplanet.md
@@ -1,8 +1,20 @@
 ---
-title: Config Options for python-blueplanet
-sidebar_label: python-blueplanet
+title: Documentation for the python-blueplanet Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python-blueplanet | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Python | |
+| generator language version | 2.7+ and 3.5.2+ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Python server library using the Connexion project. By default, it will also generate service classes -- which you can disable with the `-Dnoservice` environment variable. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/python-experimental.md b/docs/generators/python-experimental.md
new file mode 100644
index 00000000000..956038d2ac0
--- /dev/null
+++ b/docs/generators/python-experimental.md
@@ -0,0 +1,233 @@
+---
+title: Documentation for the python-experimental Generator
+---
+
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python-experimental | pass this to the generate command after -g |
+| generator stability | EXPERIMENTAL | |
+| generator type | CLIENT | |
+| generator language | Python | |
+| generator language version | >=3.9 | |
+| generator default templating engine | handlebars | |
+| helpTxt | Generates a Python client library<br /><br />Features in this generator:<br />- type hints on endpoints and model creation<br />- model parameter names use the spec defined keys and cases<br />- robust composition (oneOf/anyOf/allOf) where paload data is stored in one instance only<br />- endpoint parameter names use the spec defined keys and cases<br />- inline schemas are supported at any location including composition<br />- multiple content types supported in request body and response bodies<br />- run time type checking<br />- Sending/receiving decimals as strings supported with type:string format: number -> DecimalSchema<br />- quicker load time for python modules (a single endpoint can be imported and used without loading others)<br />- all instances of schemas dynamically inherit from all matching schemas so one can use isinstance to check if validation passed<br />- composed schemas with type constraints supported (type:object + oneOf/anyOf/allOf)<br />- schemas are not coerced/cast. For example string + date are both stored as string, and there is a date accessor<br />    - Exceptions: int/float is stored as Decimal, When receiving data from headers it will start as str and may need to be cast for example to int | |
+
+## CONFIG OPTIONS
+These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
+
+| Option | Description | Values | Default |
+| ------ | ----------- | ------ | ------- |
+|generateSourceCodeOnly|Specifies that only a library source code is to be generated.| |false|
+|hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
+|library|library template (sub-template) to use: asyncio, tornado, urllib3| |urllib3|
+|packageName|python package name (convention: snake_case).| |openapi_client|
+|packageUrl|python package URL.| |null|
+|packageVersion|python package version.| |1.0.0|
+|projectName|python project name in setup.py (e.g. petstore-api).| |null|
+|recursionLimit|Set the recursion limit. If not set, use the system default value.| |null|
+|useNose|use the nose test framework| |false|
+
+## IMPORT MAPPING
+
+| Type/Alias | Imports |
+| ---------- | ------- |
+
+
+## INSTANTIATION TYPES
+
+| Type/Alias | Instantiated By |
+| ---------- | --------------- |
+|map|dict|
+
+
+## LANGUAGE PRIMITIVES
+
+<ul class="column-ul">
+<li>bool</li>
+<li>bytes</li>
+<li>date</li>
+<li>datetime</li>
+<li>dict</li>
+<li>file</li>
+<li>file_type</li>
+<li>float</li>
+<li>int</li>
+<li>list</li>
+<li>none_type</li>
+<li>object</li>
+<li>str</li>
+</ul>
+
+## RESERVED WORDS
+
+<ul class="column-ul">
+<li>all_params</li>
+<li>and</li>
+<li>as</li>
+<li>assert</li>
+<li>async</li>
+<li>auth_settings</li>
+<li>await</li>
+<li>body_params</li>
+<li>bool</li>
+<li>break</li>
+<li>class</li>
+<li>continue</li>
+<li>def</li>
+<li>del</li>
+<li>dict</li>
+<li>elif</li>
+<li>else</li>
+<li>except</li>
+<li>exec</li>
+<li>false</li>
+<li>file_type</li>
+<li>finally</li>
+<li>float</li>
+<li>for</li>
+<li>form_params</li>
+<li>from</li>
+<li>frozendict</li>
+<li>global</li>
+<li>header_params</li>
+<li>if</li>
+<li>import</li>
+<li>in</li>
+<li>int</li>
+<li>is</li>
+<li>lambda</li>
+<li>list</li>
+<li>local_var_files</li>
+<li>none</li>
+<li>none_type</li>
+<li>nonlocal</li>
+<li>not</li>
+<li>or</li>
+<li>pass</li>
+<li>path_params</li>
+<li>print</li>
+<li>property</li>
+<li>query_params</li>
+<li>raise</li>
+<li>resource_path</li>
+<li>return</li>
+<li>self</li>
+<li>str</li>
+<li>true</li>
+<li>try</li>
+<li>tuple</li>
+<li>while</li>
+<li>with</li>
+<li>yield</li>
+</ul>
+
+## FEATURE SET
+
+
+### Client Modification Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasePath|✗|ToolingExtension
+|Authorizations|✗|ToolingExtension
+|UserAgent|✗|ToolingExtension
+|MockServer|✗|ToolingExtension
+
+### Data Type Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Custom|✗|OAS2,OAS3
+|Int32|✓|OAS2,OAS3
+|Int64|✓|OAS2,OAS3
+|Float|✓|OAS2,OAS3
+|Double|✓|OAS2,OAS3
+|Decimal|✓|ToolingExtension
+|String|✓|OAS2,OAS3
+|Byte|✓|OAS2,OAS3
+|Binary|✓|OAS2,OAS3
+|Boolean|✓|OAS2,OAS3
+|Date|✓|OAS2,OAS3
+|DateTime|✓|OAS2,OAS3
+|Password|✓|OAS2,OAS3
+|File|✓|OAS2
+|Array|✓|OAS2,OAS3
+|Maps|✓|ToolingExtension
+|CollectionFormat|✓|OAS2
+|CollectionFormatMulti|✓|OAS2
+|Enum|✓|OAS2,OAS3
+|ArrayOfEnum|✓|ToolingExtension
+|ArrayOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
+|ArrayOfCollectionOfModel|✓|ToolingExtension
+|ArrayOfCollectionOfEnum|✓|ToolingExtension
+|MapOfEnum|✓|ToolingExtension
+|MapOfModel|✓|ToolingExtension
+|MapOfCollectionOfPrimitives|✓|ToolingExtension
+|MapOfCollectionOfModel|✓|ToolingExtension
+|MapOfCollectionOfEnum|✓|ToolingExtension
+
+### Documentation Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Readme|✓|ToolingExtension
+|Model|✓|ToolingExtension
+|Api|✓|ToolingExtension
+
+### Global Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Host|✓|OAS2,OAS3
+|BasePath|✓|OAS2,OAS3
+|Info|✓|OAS2,OAS3
+|Schemes|✗|OAS2,OAS3
+|PartialSchemes|✓|OAS2,OAS3
+|Consumes|✓|OAS2
+|Produces|✓|OAS2
+|ExternalDocumentation|✓|OAS2,OAS3
+|Examples|✓|OAS2,OAS3
+|XMLStructureDefinitions|✗|OAS2,OAS3
+|MultiServer|✗|OAS3
+|ParameterizedServer|✓|OAS3
+|ParameterStyling|✓|OAS3
+|Callbacks|✗|OAS3
+|LinkObjects|✗|OAS3
+
+### Parameter Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Path|✓|OAS2,OAS3
+|Query|✓|OAS2,OAS3
+|Header|✓|OAS2,OAS3
+|Body|✓|OAS2
+|FormUnencoded|✓|OAS2
+|FormMultipart|✓|OAS2
+|Cookie|✗|OAS3
+
+### Schema Support Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|Simple|✓|OAS2,OAS3
+|Composite|✓|OAS2,OAS3
+|Polymorphism|✓|OAS2,OAS3
+|Union|✓|OAS3
+
+### Security Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|BasicAuth|✓|OAS2,OAS3
+|ApiKey|✓|OAS2,OAS3
+|OpenIDConnect|✗|OAS3
+|BearerToken|✓|OAS3
+|OAuth2_Implicit|✓|OAS2,OAS3
+|OAuth2_Password|✗|OAS2,OAS3
+|OAuth2_ClientCredentials|✗|OAS2,OAS3
+|OAuth2_AuthorizationCode|✗|OAS2,OAS3
+
+### Wire Format Feature
+| Name | Supported | Defined By |
+| ---- | --------- | ---------- |
+|JSON|✓|OAS2,OAS3
+|XML|✗|OAS2,OAS3
+|PROTOBUF|✗|ToolingExtension
+|Custom|✓|OAS2,OAS3
diff --git a/docs/generators/python-fastapi.md b/docs/generators/python-fastapi.md
index 4e321ff9e59..163a85e5041 100644
--- a/docs/generators/python-fastapi.md
+++ b/docs/generators/python-fastapi.md
@@ -1,8 +1,20 @@
 ---
-title: Config Options for python-fastapi
-sidebar_label: python-fastapi
+title: Documentation for the python-fastapi Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python-fastapi | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Python | |
+| generator language version | 3.7 | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Python FastAPI server (beta). Models are defined with the pydantic library | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/python-flask.md b/docs/generators/python-flask.md
index a0a5f44b20a..8cf4ec6e7a9 100644
--- a/docs/generators/python-flask.md
+++ b/docs/generators/python-flask.md
@@ -1,8 +1,20 @@
 ---
-title: Config Options for python-flask
-sidebar_label: python-flask
+title: Documentation for the python-flask Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python-flask | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Python | |
+| generator language version | 2.7 and 3.5.2+ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Python server library using the Connexion project. By default, it will also generate service classes -- which you can disable with the `-Dnoservice` environment variable. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/python-legacy.md b/docs/generators/python-legacy.md
index a341d478882..08c0c42c002 100644
--- a/docs/generators/python-legacy.md
+++ b/docs/generators/python-legacy.md
@@ -1,8 +1,20 @@
 ---
-title: Config Options for python-legacy
-sidebar_label: python-legacy
+title: Documentation for the python-legacy Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python-legacy | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Python | |
+| generator language version | 2.7 and 3.4+ | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Python client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/python.md b/docs/generators/python.md
index fe60f0e511c..1910f46d544 100644
--- a/docs/generators/python.md
+++ b/docs/generators/python.md
@@ -1,8 +1,20 @@
 ---
-title: Config Options for python
-sidebar_label: python
+title: Documentation for the python Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | python | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Python | |
+| generator language version | >=3.6 | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Python client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/r.md b/docs/generators/r.md
index 69613835612..d034e862078 100644
--- a/docs/generators/r.md
+++ b/docs/generators/r.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for r
-sidebar_label: r
+title: Documentation for the r Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | r | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | R | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a R client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/ruby-on-rails.md b/docs/generators/ruby-on-rails.md
index 5c25cf1451b..ecb8a858a81 100644
--- a/docs/generators/ruby-on-rails.md
+++ b/docs/generators/ruby-on-rails.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ruby-on-rails
-sidebar_label: ruby-on-rails
+title: Documentation for the ruby-on-rails Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ruby-on-rails | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Ruby | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Ruby on Rails (v5) server library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/ruby-sinatra.md b/docs/generators/ruby-sinatra.md
index 58043cfafc5..a9655ea8e53 100644
--- a/docs/generators/ruby-sinatra.md
+++ b/docs/generators/ruby-sinatra.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ruby-sinatra
-sidebar_label: ruby-sinatra
+title: Documentation for the ruby-sinatra Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ruby-sinatra | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Ruby | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Ruby Sinatra server library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/ruby.md b/docs/generators/ruby.md
index 6937905b9e3..f0188be575f 100644
--- a/docs/generators/ruby.md
+++ b/docs/generators/ruby.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for ruby
-sidebar_label: ruby
+title: Documentation for the ruby Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | ruby | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Ruby | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Ruby client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/rust-server.md b/docs/generators/rust-server.md
index 1d13b032104..52f2b52909d 100644
--- a/docs/generators/rust-server.md
+++ b/docs/generators/rust-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for rust-server
-sidebar_label: rust-server
+title: Documentation for the rust-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | rust-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Rust | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Rust client/server library (beta) using the openapi-generator project. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/rust.md b/docs/generators/rust.md
index dc57794b8d0..0f45ded3438 100644
--- a/docs/generators/rust.md
+++ b/docs/generators/rust.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for rust
-sidebar_label: rust
+title: Documentation for the rust Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | rust | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Rust | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Rust client library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-akka-http-server.md b/docs/generators/scala-akka-http-server.md
index 3d27821c231..3cbb4c8fb1d 100644
--- a/docs/generators/scala-akka-http-server.md
+++ b/docs/generators/scala-akka-http-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-akka-http-server
-sidebar_label: scala-akka-http-server
+title: Documentation for the scala-akka-http-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-akka-http-server | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SERVER | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a scala-akka-http server (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-akka.md b/docs/generators/scala-akka.md
index 1cc19c6216d..b6ba593dcc4 100644
--- a/docs/generators/scala-akka.md
+++ b/docs/generators/scala-akka.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-akka
-sidebar_label: scala-akka
+title: Documentation for the scala-akka Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-akka | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scala client library (beta) base on Akka/Spray. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-finch.md b/docs/generators/scala-finch.md
index 5d2bdded42a..5ace1e1652f 100644
--- a/docs/generators/scala-finch.md
+++ b/docs/generators/scala-finch.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-finch
-sidebar_label: scala-finch
+title: Documentation for the scala-finch Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-finch | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scala server application with Finch. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-gatling.md b/docs/generators/scala-gatling.md
index 6daaef5d657..e3be5dfa0b5 100644
--- a/docs/generators/scala-gatling.md
+++ b/docs/generators/scala-gatling.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-gatling
-sidebar_label: scala-gatling
+title: Documentation for the scala-gatling Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-gatling | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a gatling simulation library (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-httpclient-deprecated.md b/docs/generators/scala-httpclient-deprecated.md
index 4bd12dca955..35d8e770dbe 100644
--- a/docs/generators/scala-httpclient-deprecated.md
+++ b/docs/generators/scala-httpclient-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-httpclient-deprecated
-sidebar_label: scala-httpclient-deprecated
+title: Documentation for the scala-httpclient-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-httpclient-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | CLIENT | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scala client library (beta). IMPORTANT: This generator is no longer actively maintained and will be deprecated. PLease use 'scala-akka' generator instead. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-lagom-server.md b/docs/generators/scala-lagom-server.md
index ed197a23e5e..0014d87fedb 100644
--- a/docs/generators/scala-lagom-server.md
+++ b/docs/generators/scala-lagom-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-lagom-server
-sidebar_label: scala-lagom-server
+title: Documentation for the scala-lagom-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-lagom-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Lagom API server (Beta) in scala | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-play-server.md b/docs/generators/scala-play-server.md
index aeab7fd2538..58562232a92 100644
--- a/docs/generators/scala-play-server.md
+++ b/docs/generators/scala-play-server.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-play-server
-sidebar_label: scala-play-server
+title: Documentation for the scala-play-server Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-play-server | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scala server application (beta) with Play Framework. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scala-sttp.md b/docs/generators/scala-sttp.md
index 9425f8f5c97..ad67f76194d 100644
--- a/docs/generators/scala-sttp.md
+++ b/docs/generators/scala-sttp.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scala-sttp
-sidebar_label: scala-sttp
+title: Documentation for the scala-sttp Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scala-sttp | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | CLIENT | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scala client library (beta) based on Sttp. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scalatra.md b/docs/generators/scalatra.md
index 9159c798f23..2a8b10482dc 100644
--- a/docs/generators/scalatra.md
+++ b/docs/generators/scalatra.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scalatra
-sidebar_label: scalatra
+title: Documentation for the scalatra Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scalatra | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scala server application with Scalatra. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/scalaz.md b/docs/generators/scalaz.md
index 18520f5e3b3..6916c86fe9f 100644
--- a/docs/generators/scalaz.md
+++ b/docs/generators/scalaz.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for scalaz
-sidebar_label: scalaz
+title: Documentation for the scalaz Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | scalaz | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Scala | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Scalaz client library (beta) that uses http4s | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/spring.md b/docs/generators/spring.md
index 34e4a6a266c..849bd84b8f1 100644
--- a/docs/generators/spring.md
+++ b/docs/generators/spring.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for spring
-sidebar_label: spring
+title: Documentation for the spring Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | spring | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | SERVER | |
+| generator language | Java | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Java SpringBoot Server application using the SpringFox integration. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -10,6 +21,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |additionalEnumTypeAnnotations|Additional annotations for enum type(class level annotations)| |null|
 |additionalModelTypeAnnotations|Additional annotations for model type(class level annotations). List separated by semicolon(;) or new line (Linux or Windows)| |null|
 |allowUnicodeIdentifiers|boolean, toggles whether unicode identifiers are allowed in names or not, default is false| |false|
+|annotationLibrary|Select the complementary documentation annotation library.|<dl><dt>**none**</dt><dd>Do not annotate Model and Api with complementary annotations.</dd><dt>**swagger1**</dt><dd>Annotate Model and Api using the Swagger Annotations 1.x library.</dd><dt>**swagger2**</dt><dd>Annotate Model and Api using the Swagger Annotations 2.x library.</dd></dl>|swagger2|
 |apiFirst|Generate the API from the OAI spec at server compile time (API first approach)| |false|
 |apiPackage|package for generated api classes| |org.openapitools.api|
 |artifactDescription|artifact description in generated pom.xml| |OpenAPI Java|
@@ -30,6 +42,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disableHtmlEscaping|Disable HTML escaping of JSON strings when using gson (needed to avoid problems with byte[] fields)| |false|
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
+|documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd><dt>**springfox**</dt><dd>Generate an OpenAPI 2 (fka Swagger RESTful API Documentation Specification) specification using SpringFox 2.x.</dd><dt>**springdoc**</dt><dd>Generate an OpenAPI 3 specification using SpringDoc.</dd></dl>|springdoc|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |fullJavaUtil|whether to use fully qualified name for classes under java.util. This option only works for Java API client| |false|
@@ -46,7 +59,6 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |licenseName|The name of the license| |Unlicense|
 |licenseUrl|The URL of the license| |http://unlicense.org|
 |modelPackage|package for generated models| |org.openapitools.model|
-|oas3|Use OAS 3 Swagger annotations instead of OAS 2 annotations| |false|
 |openApiNullable|Enable OpenAPI Jackson Nullable library| |true|
 |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
 |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null|
@@ -67,6 +79,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |sourceFolder|source folder for generated code| |src/main/java|
 |swaggerDocketConfig|Generate Spring OpenAPI Docket configuration class.| |false|
+|testOutput|Set output folder for models and APIs tests| |${project.build.directory}/generated-test-sources/openapi|
 |title|server title name or client service name| |OpenAPI Spring|
 |unhandledException|Declare operation methods to throw a generic exception and allow unhandled exceptions (useful for Spring `@ControllerAdvice` directives).| |false|
 |useBeanValidation|Use BeanValidation API annotations| |true|
@@ -146,6 +159,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>else</li>
 <li>enum</li>
 <li>extends</li>
+<li>file</li>
 <li>final</li>
 <li>finally</li>
 <li>float</li>
@@ -157,6 +171,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 <li>instanceof</li>
 <li>int</li>
 <li>interface</li>
+<li>list</li>
 <li>localreturntype</li>
 <li>localvaraccept</li>
 <li>localvaraccepts</li>
diff --git a/docs/generators/swift4-deprecated.md b/docs/generators/swift4-deprecated.md
deleted file mode 100644
index cf1e1f65df4..00000000000
--- a/docs/generators/swift4-deprecated.md
+++ /dev/null
@@ -1,322 +0,0 @@
----
-title: Config Options for swift4-deprecated
-sidebar_label: swift4-deprecated
----
-
-These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
-
-| Option | Description | Values | Default |
-| ------ | ----------- | ------ | ------- |
-|allowUnicodeIdentifiers|boolean, toggles whether unicode identifiers are allowed in names or not, default is false| |false|
-|disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
-|ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
-|hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
-|legacyDiscriminatorBehavior|Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C#have this enabled by default).|<dl><dt>**true**</dt><dd>The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.</dd><dt>**false**</dt><dd>The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.</dd></dl>|true|
-|lenientTypeCast|Accept and cast values for simple types (string-&gt;bool, string-&gt;int, int-&gt;string)| |false|
-|nonPublicApi|Generates code with reduced access modifiers; allows embedding elsewhere without exposing non-public API calls to consumers.(default: false)| |null|
-|objcCompatible|Add additional properties and methods for Objective-C compatibility (default: false)| |null|
-|podAuthors|Authors used for Podspec| |null|
-|podDescription|Description used for Podspec| |null|
-|podDocsetURL|Docset URL used for Podspec| |null|
-|podDocumentationURL|Documentation URL used for Podspec| |null|
-|podHomepage|Homepage used for Podspec| |null|
-|podLicense|License used for Podspec| |null|
-|podScreenshots|Screenshots used for Podspec| |null|
-|podSocialMediaURL|Social Media URL used for Podspec| |null|
-|podSource|Source information used for Podspec| |null|
-|podSummary|Summary used for Podspec| |null|
-|podVersion|Version used for Podspec| |null|
-|prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false|
-|projectName|Project name in Xcode| |null|
-|responseAs|Optionally use libraries to manage response.  Currently PromiseKit, RxSwift, Result are available.| |null|
-|sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
-|sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
-|swiftUseApiNamespace|Flag to make all the API classes inner-class of {{projectName}}API| |null|
-|unwrapRequired|Treat 'required' properties in response as non-optional (which would crash the app if api returns null as opposed to required option specified in json schema| |null|
-
-## IMPORT MAPPING
-
-| Type/Alias | Imports |
-| ---------- | ------- |
-
-
-## INSTANTIATION TYPES
-
-| Type/Alias | Instantiated By |
-| ---------- | --------------- |
-
-
-## LANGUAGE PRIMITIVES
-
-<ul class="column-ul">
-<li>Any</li>
-<li>AnyObject</li>
-<li>Bool</li>
-<li>Character</li>
-<li>Data</li>
-<li>Date</li>
-<li>Decimal</li>
-<li>Double</li>
-<li>Float</li>
-<li>Int</li>
-<li>Int32</li>
-<li>Int64</li>
-<li>String</li>
-<li>URL</li>
-<li>UUID</li>
-<li>Void</li>
-</ul>
-
-## RESERVED WORDS
-
-<ul class="column-ul">
-<li>#available</li>
-<li>#colorLiteral</li>
-<li>#column</li>
-<li>#else</li>
-<li>#elseif</li>
-<li>#endif</li>
-<li>#file</li>
-<li>#fileLiteral</li>
-<li>#function</li>
-<li>#if</li>
-<li>#imageLiteral</li>
-<li>#line</li>
-<li>#selector</li>
-<li>#sourceLocation</li>
-<li>Any</li>
-<li>AnyObject</li>
-<li>Array</li>
-<li>Bool</li>
-<li>COLUMN</li>
-<li>Character</li>
-<li>Class</li>
-<li>ClosedRange</li>
-<li>Codable</li>
-<li>CountableClosedRange</li>
-<li>CountableRange</li>
-<li>Data</li>
-<li>Decodable</li>
-<li>Dictionary</li>
-<li>Double</li>
-<li>Encodable</li>
-<li>Error</li>
-<li>ErrorResponse</li>
-<li>FILE</li>
-<li>FUNCTION</li>
-<li>Float</li>
-<li>Float32</li>
-<li>Float64</li>
-<li>Float80</li>
-<li>Int</li>
-<li>Int16</li>
-<li>Int32</li>
-<li>Int64</li>
-<li>Int8</li>
-<li>LINE</li>
-<li>OptionSet</li>
-<li>Optional</li>
-<li>Protocol</li>
-<li>Range</li>
-<li>Response</li>
-<li>Self</li>
-<li>Set</li>
-<li>StaticString</li>
-<li>String</li>
-<li>Type</li>
-<li>UInt</li>
-<li>UInt16</li>
-<li>UInt32</li>
-<li>UInt64</li>
-<li>UInt8</li>
-<li>URL</li>
-<li>Unicode</li>
-<li>Void</li>
-<li>_</li>
-<li>as</li>
-<li>associatedtype</li>
-<li>associativity</li>
-<li>break</li>
-<li>case</li>
-<li>catch</li>
-<li>class</li>
-<li>continue</li>
-<li>convenience</li>
-<li>default</li>
-<li>defer</li>
-<li>deinit</li>
-<li>didSet</li>
-<li>do</li>
-<li>dynamic</li>
-<li>dynamicType</li>
-<li>else</li>
-<li>enum</li>
-<li>extension</li>
-<li>fallthrough</li>
-<li>false</li>
-<li>fileprivate</li>
-<li>final</li>
-<li>for</li>
-<li>func</li>
-<li>get</li>
-<li>guard</li>
-<li>if</li>
-<li>import</li>
-<li>in</li>
-<li>indirect</li>
-<li>infix</li>
-<li>init</li>
-<li>inout</li>
-<li>internal</li>
-<li>is</li>
-<li>lazy</li>
-<li>left</li>
-<li>let</li>
-<li>mutating</li>
-<li>nil</li>
-<li>none</li>
-<li>nonmutating</li>
-<li>open</li>
-<li>operator</li>
-<li>optional</li>
-<li>override</li>
-<li>postfix</li>
-<li>precedence</li>
-<li>prefix</li>
-<li>private</li>
-<li>protocol</li>
-<li>public</li>
-<li>repeat</li>
-<li>required</li>
-<li>rethrows</li>
-<li>return</li>
-<li>right</li>
-<li>self</li>
-<li>set</li>
-<li>static</li>
-<li>struct</li>
-<li>subscript</li>
-<li>super</li>
-<li>switch</li>
-<li>throw</li>
-<li>throws</li>
-<li>true</li>
-<li>try</li>
-<li>typealias</li>
-<li>unowned</li>
-<li>var</li>
-<li>weak</li>
-<li>where</li>
-<li>while</li>
-<li>willSet</li>
-</ul>
-
-## FEATURE SET
-
-
-### Client Modification Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|BasePath|✗|ToolingExtension
-|Authorizations|✗|ToolingExtension
-|UserAgent|✗|ToolingExtension
-|MockServer|✗|ToolingExtension
-
-### Data Type Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|Custom|✗|OAS2,OAS3
-|Int32|✓|OAS2,OAS3
-|Int64|✓|OAS2,OAS3
-|Float|✓|OAS2,OAS3
-|Double|✓|OAS2,OAS3
-|Decimal|✓|ToolingExtension
-|String|✓|OAS2,OAS3
-|Byte|✓|OAS2,OAS3
-|Binary|✓|OAS2,OAS3
-|Boolean|✓|OAS2,OAS3
-|Date|✓|OAS2,OAS3
-|DateTime|✓|OAS2,OAS3
-|Password|✓|OAS2,OAS3
-|File|✓|OAS2
-|Array|✓|OAS2,OAS3
-|Maps|✓|ToolingExtension
-|CollectionFormat|✓|OAS2
-|CollectionFormatMulti|✓|OAS2
-|Enum|✓|OAS2,OAS3
-|ArrayOfEnum|✓|ToolingExtension
-|ArrayOfModel|✓|ToolingExtension
-|ArrayOfCollectionOfPrimitives|✓|ToolingExtension
-|ArrayOfCollectionOfModel|✓|ToolingExtension
-|ArrayOfCollectionOfEnum|✓|ToolingExtension
-|MapOfEnum|✓|ToolingExtension
-|MapOfModel|✓|ToolingExtension
-|MapOfCollectionOfPrimitives|✓|ToolingExtension
-|MapOfCollectionOfModel|✓|ToolingExtension
-|MapOfCollectionOfEnum|✓|ToolingExtension
-
-### Documentation Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|Readme|✗|ToolingExtension
-|Model|✓|ToolingExtension
-|Api|✓|ToolingExtension
-
-### Global Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|Host|✓|OAS2,OAS3
-|BasePath|✓|OAS2,OAS3
-|Info|✓|OAS2,OAS3
-|Schemes|✗|OAS2,OAS3
-|PartialSchemes|✓|OAS2,OAS3
-|Consumes|✓|OAS2
-|Produces|✓|OAS2
-|ExternalDocumentation|✓|OAS2,OAS3
-|Examples|✓|OAS2,OAS3
-|XMLStructureDefinitions|✗|OAS2,OAS3
-|MultiServer|✗|OAS3
-|ParameterizedServer|✗|OAS3
-|ParameterStyling|✗|OAS3
-|Callbacks|✗|OAS3
-|LinkObjects|✗|OAS3
-
-### Parameter Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|Path|✓|OAS2,OAS3
-|Query|✓|OAS2,OAS3
-|Header|✓|OAS2,OAS3
-|Body|✓|OAS2
-|FormUnencoded|✓|OAS2
-|FormMultipart|✓|OAS2
-|Cookie|✗|OAS3
-
-### Schema Support Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|Simple|✓|OAS2,OAS3
-|Composite|✓|OAS2,OAS3
-|Polymorphism|✓|OAS2,OAS3
-|Union|✗|OAS3
-
-### Security Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|BasicAuth|✓|OAS2,OAS3
-|ApiKey|✓|OAS2,OAS3
-|OpenIDConnect|✗|OAS3
-|BearerToken|✗|OAS3
-|OAuth2_Implicit|✓|OAS2,OAS3
-|OAuth2_Password|✗|OAS2,OAS3
-|OAuth2_ClientCredentials|✗|OAS2,OAS3
-|OAuth2_AuthorizationCode|✗|OAS2,OAS3
-
-### Wire Format Feature
-| Name | Supported | Defined By |
-| ---- | --------- | ---------- |
-|JSON|✓|OAS2,OAS3
-|XML|✗|OAS2,OAS3
-|PROTOBUF|✗|ToolingExtension
-|Custom|✗|OAS2,OAS3
diff --git a/docs/generators/swift5.md b/docs/generators/swift5.md
index 95f50fca7fc..5f79e7ae5c3 100644
--- a/docs/generators/swift5.md
+++ b/docs/generators/swift5.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for swift5
-sidebar_label: swift5
+title: Documentation for the swift5 Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | swift5 | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Swift | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a Swift 5.x client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-angular.md b/docs/generators/typescript-angular.md
index 9421c54646e..29e49049c07 100644
--- a/docs/generators/typescript-angular.md
+++ b/docs/generators/typescript-angular.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-angular
-sidebar_label: typescript-angular
+title: Documentation for the typescript-angular Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-angular | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript Angular (6.x - 13.x) client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-angularjs-deprecated.md b/docs/generators/typescript-angularjs-deprecated.md
index c094849a078..1097c4cd2f5 100644
--- a/docs/generators/typescript-angularjs-deprecated.md
+++ b/docs/generators/typescript-angularjs-deprecated.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-angularjs-deprecated
-sidebar_label: typescript-angularjs-deprecated
+title: Documentation for the typescript-angularjs-deprecated Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-angularjs-deprecated | pass this to the generate command after -g |
+| generator stability | DEPRECATED | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript AngularJS client library. This generator has been deprecated and will be removed in the future release. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-aurelia.md b/docs/generators/typescript-aurelia.md
index 23b71ae41a3..1acd1fca031 100644
--- a/docs/generators/typescript-aurelia.md
+++ b/docs/generators/typescript-aurelia.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-aurelia
-sidebar_label: typescript-aurelia
+title: Documentation for the typescript-aurelia Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-aurelia | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript client library for the Aurelia framework (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-axios.md b/docs/generators/typescript-axios.md
index d489756bacb..a205ff3f799 100644
--- a/docs/generators/typescript-axios.md
+++ b/docs/generators/typescript-axios.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-axios
-sidebar_label: typescript-axios
+title: Documentation for the typescript-axios Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-axios | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript client library using axios. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -23,6 +34,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |snapshot|When setting this property to true, the version will be suffixed with -SNAPSHOT.yyyyMMddHHmm| |false|
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
+|stringEnums|Generate string enums instead of objects for enum values.| |false|
 |supportsES6|Generate code that conforms to ES6.| |false|
 |useSingleRequestParameter|Setting this property to true will generate functions with a single argument containing all API endpoint parameters instead of one argument per parameter.| |false|
 |withInterfaces|Setting this property to true will generate interfaces next to the default class implementations.| |false|
diff --git a/docs/generators/typescript-fetch.md b/docs/generators/typescript-fetch.md
index 3fe83380da4..b0a8a58c143 100644
--- a/docs/generators/typescript-fetch.md
+++ b/docs/generators/typescript-fetch.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-fetch
-sidebar_label: typescript-fetch
+title: Documentation for the typescript-fetch Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-fetch | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript client library using Fetch API (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
@@ -27,7 +38,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true|
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |supportsES6|Generate code that conforms to ES6.| |false|
-|typescriptThreePlus|Setting this property to true will generate TypeScript 3.6+ compatible code.| |false|
+|typescriptThreePlus|Setting this property to true will generate TypeScript 3.6+ compatible code.| |true|
 |useSingleRequestParameter|Setting this property to true will generate functions with a single argument containing all API endpoint parameters instead of one argument per parameter.| |true|
 |withInterfaces|Setting this property to true will generate interfaces next to the default class implementations.| |false|
 |withoutRuntimeChecks|Setting this property to true will remove any runtime checks on the request and response payloads. Payloads will be casted to their expected types.| |false|
diff --git a/docs/generators/typescript-inversify.md b/docs/generators/typescript-inversify.md
index 21e44eac43f..a6df7b68414 100644
--- a/docs/generators/typescript-inversify.md
+++ b/docs/generators/typescript-inversify.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-inversify
-sidebar_label: typescript-inversify
+title: Documentation for the typescript-inversify Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-inversify | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates Typescript services using Inversify IOC | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-jquery.md b/docs/generators/typescript-jquery.md
index 030fdd2e572..f9614b9384f 100644
--- a/docs/generators/typescript-jquery.md
+++ b/docs/generators/typescript-jquery.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-jquery
-sidebar_label: typescript-jquery
+title: Documentation for the typescript-jquery Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-jquery | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript jquery client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-nestjs.md b/docs/generators/typescript-nestjs.md
index a3f0b52a05d..0e00ef4f247 100644
--- a/docs/generators/typescript-nestjs.md
+++ b/docs/generators/typescript-nestjs.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-nestjs
-sidebar_label: typescript-nestjs
+title: Documentation for the typescript-nestjs Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-nestjs | pass this to the generate command after -g |
+| generator stability | EXPERIMENTAL | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript Nestjs 6.x client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-node.md b/docs/generators/typescript-node.md
index 5de27045312..54dcee73307 100644
--- a/docs/generators/typescript-node.md
+++ b/docs/generators/typescript-node.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-node
-sidebar_label: typescript-node
+title: Documentation for the typescript-node Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-node | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript NodeJS client library. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-redux-query.md b/docs/generators/typescript-redux-query.md
index f2266c09703..f219e8a3e5e 100644
--- a/docs/generators/typescript-redux-query.md
+++ b/docs/generators/typescript-redux-query.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-redux-query
-sidebar_label: typescript-redux-query
+title: Documentation for the typescript-redux-query Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-redux-query | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript client library using redux-query API (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript-rxjs.md b/docs/generators/typescript-rxjs.md
index 40921ae7f58..93aca0c5f81 100644
--- a/docs/generators/typescript-rxjs.md
+++ b/docs/generators/typescript-rxjs.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript-rxjs
-sidebar_label: typescript-rxjs
+title: Documentation for the typescript-rxjs Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript-rxjs | pass this to the generate command after -g |
+| generator stability | STABLE | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript client library using Rxjs API. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/typescript.md b/docs/generators/typescript.md
index 9c6eea23c03..4ce5f1ba11a 100644
--- a/docs/generators/typescript.md
+++ b/docs/generators/typescript.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for typescript
-sidebar_label: typescript
+title: Documentation for the typescript Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | typescript | pass this to the generate command after -g |
+| generator stability | EXPERIMENTAL | |
+| generator type | CLIENT | |
+| generator language | Typescript | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates a TypeScript client library using Fetch API (beta). | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/generators/wsdl-schema.md b/docs/generators/wsdl-schema.md
index a2af1139862..e54072e7335 100644
--- a/docs/generators/wsdl-schema.md
+++ b/docs/generators/wsdl-schema.md
@@ -1,8 +1,19 @@
 ---
-title: Config Options for wsdl-schema
-sidebar_label: wsdl-schema
+title: Documentation for the wsdl-schema Generator
 ---
 
+## METADATA
+
+| Property | Value | Notes |
+| -------- | ----- | ----- |
+| generator name | wsdl-schema | pass this to the generate command after -g |
+| generator stability | BETA | |
+| generator type | SCHEMA | |
+| generator language | Web Services Description Language (WSDL) | |
+| generator default templating engine | mustache | |
+| helpTxt | Generates WSDL files. | |
+
+## CONFIG OPTIONS
 These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.
 
 | Option | Description | Values | Default |
diff --git a/docs/installation.md b/docs/installation.md
index bc74ea62e78..35d8d105221 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -108,7 +108,7 @@ export PATH=${JAVA_HOME}/bin:$PATH
 
 > **Platform(s)**: Linux, macOS, Windows (variable)
 
-One downside to manual JAR downloads is that you don't keep up-to-date with the latest released version. We have a Bash launcher script at [bin/utils/openapi-generator.cli.sh](https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/bin/utils/openapi-generator-cli.sh) which solves this problem.
+One downside to manual JAR downloads is that you don't keep up-to-date with the latest released version. We have a Bash launcher script at [bin/utils/openapi-generator-cli.sh](https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/bin/utils/openapi-generator-cli.sh) which solves this problem.
 
 To install the launcher script, copy the contents of the script to a location on your path and make the script executable.
 
diff --git a/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/ConfigHelp.java b/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/ConfigHelp.java
index 8193e20e3f4..3bfd97c90a4 100644
--- a/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/ConfigHelp.java
+++ b/modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/ConfigHelp.java
@@ -70,6 +70,9 @@ public class ConfigHelp extends OpenApiGeneratorCommand {
     @Option(name = {"--import-mappings"}, title = "import mappings", description = "displays the default import mappings (types and aliases, and what imports they will pull into the template)")
     private Boolean importMappings;
 
+    @Option(name = {"--metadata"}, title = "metadata", description = "displays the generator metadata like the help txt for the generator and generator type etc")
+    private Boolean metadata;
+
     @Option(name = {"--language-specific-primitive"}, title = "language specific primitives", description = "displays the language specific primitives (types which require no additional imports, or which may conflict with user defined model names)")
     private Boolean languageSpecificPrimitives;
 
@@ -104,6 +107,7 @@ public class ConfigHelp extends OpenApiGeneratorCommand {
             languageSpecificPrimitives = Boolean.TRUE;
             importMappings = Boolean.TRUE;
             featureSets = Boolean.TRUE;
+            metadata = Boolean.TRUE;
         }
 
         try {
@@ -153,26 +157,8 @@ public class ConfigHelp extends OpenApiGeneratorCommand {
         }
     }
 
-    private void generateMarkdownHelp(StringBuilder sb, CodegenConfig config) {
-        if (Boolean.TRUE.equals(markdownHeader)) {
-            sb.append("---").append(newline);
-            sb.append("title: Config Options for ").append(generatorName).append(newline);
-            sb.append("sidebar_label: ").append(generatorName).append(newline);
-            sb.append("---").append(newline);
-            sb.append(newline);
-            sb.append("These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.");
-            sb.append(newline);
-        } else {
-            sb.append(newline);
-            sb.append("## CONFIG OPTIONS");
-
-            if (Boolean.TRUE.equals(namedHeader)) {
-                sb.append(" for <em>").append(generatorName).append("</em>").append(newline);
-            }
-        }
-
+    private void generateMdConfigOptions(StringBuilder sb, CodegenConfig config) {
         sb.append(newline);
-
         sb.append("| Option | Description | Values | Default |").append(newline);
         sb.append("| ------ | ----------- | ------ | ------- |").append(newline);
 
@@ -210,90 +196,160 @@ public class ConfigHelp extends OpenApiGeneratorCommand {
             // default
             sb.append(escapeHtml4(langCliOption.getDefault())).append("|").append(newline);
         });
+    }
 
+    private void generateMdImportMappings(StringBuilder sb, CodegenConfig config) {
+        sb.append(newline).append("## IMPORT MAPPING").append(newline).append(newline);
+
+        sb.append("| Type/Alias | Imports |").append(newline);
+        sb.append("| ---------- | ------- |").append(newline);
+
+        config.importMapping()
+                .entrySet()
+                .stream()
+                .sorted(Map.Entry.comparingByKey())
+                .forEachOrdered(kvp -> {
+                    sb.append("|").append(escapeHtml4(kvp.getKey())).append("|").append(escapeHtml4(kvp.getValue())).append("|");
+                    sb.append(newline);
+                });
+
+        sb.append(newline);
+    }
+
+    private void generateMdInstantiationTypes(StringBuilder sb, CodegenConfig config) {
+        sb.append(newline).append("## INSTANTIATION TYPES").append(newline).append(newline);
+
+        sb.append("| Type/Alias | Instantiated By |").append(newline);
+        sb.append("| ---------- | --------------- |").append(newline);
+
+        config.instantiationTypes()
+                .entrySet()
+                .stream()
+                .sorted(Map.Entry.comparingByKey())
+                .forEachOrdered(kvp -> {
+                    sb.append("|").append(escapeHtml4(kvp.getKey())).append("|").append(escapeHtml4(kvp.getValue())).append("|");
+                    sb.append(newline);
+                });
+
+        sb.append(newline);
+    }
+
+    private void generateMdLanguageSpecificPrimitives(StringBuilder sb, CodegenConfig config) {
+        sb.append(newline).append("## LANGUAGE PRIMITIVES").append(newline).append(newline);
+
+        sb.append("<ul class=\"column-ul\">").append(newline);
+        config.languageSpecificPrimitives()
+                .stream()
+                .sorted(String::compareTo)
+                .forEach(s -> sb.append("<li>").append(escapeHtml4(s)).append("</li>").append(newline));
+        sb.append("</ul>").append(newline);
+    }
+
+    private void generateMdReservedWords(StringBuilder sb, CodegenConfig config) {
+        sb.append(newline).append("## RESERVED WORDS").append(newline).append(newline);
+
+        sb.append("<ul class=\"column-ul\">").append(newline);
+        config.reservedWords()
+                .stream()
+                .sorted(String::compareTo)
+                .forEach(s -> sb.append("<li>").append(escapeHtml4(s)).append("</li>").append(newline));
+        sb.append("</ul>").append(newline);
+    }
+
+    private void generateMdFeatureSets(StringBuilder sb, CodegenConfig config) {
+        sb.append(newline).append("## FEATURE SET").append(newline).append(newline);
+
+        List<FeatureSet.FeatureSetFlattened> flattened = config.getGeneratorMetadata().getFeatureSet().flatten();
+        flattened.sort(Comparator.comparing(FeatureSet.FeatureSetFlattened::getFeatureCategory));
+
+        AtomicReference<String> lastCategory = new AtomicReference<>();
+        flattened.forEach(featureSet -> {
+            if (!featureSet.getFeatureCategory().equals(lastCategory.get())) {
+                lastCategory.set(featureSet.getFeatureCategory());
+
+                String[] header = StringUtils.splitByCharacterTypeCamelCase(featureSet.getFeatureCategory());
+                sb.append(newline).append("### ").append(StringUtils.join(header, " ")).append(newline);
+
+                sb.append("| Name | Supported | Defined By |").append(newline);
+                sb.append("| ---- | --------- | ---------- |").append(newline);
+            }
+
+            // Appends a ✓ or ✗ for support
+            sb.append("|").append(featureSet.getFeatureName())
+                    .append("|").append(featureSet.isSupported() ? "✓" : "✗")
+                    .append("|").append(StringUtils.join(featureSet.getSource(), ","))
+                    .append(newline);
+        });
+    }
+
+    private void generateMdConfigOptionsHeader(StringBuilder sb, CodegenConfig config) {
+        if (Boolean.TRUE.equals(markdownHeader)) {
+            sb.append("## CONFIG OPTIONS").append(newline);
+            sb.append("These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to [configuration docs](https://openapi-generator.tech/docs/configuration) for more details.");
+            sb.append(newline);
+        } else {
+            sb.append(newline);
+            sb.append("## CONFIG OPTIONS");
+
+            if (Boolean.TRUE.equals(namedHeader)) {
+                sb.append(" for <em>").append(generatorName).append("</em>").append(newline);
+            }
+        }
+    }
+
+    private void generateMdMetadata(StringBuilder sb, CodegenConfig config) {
+        sb.append("## METADATA").append(newline).append(newline);
+
+        sb.append("| Property | Value | Notes |").append(newline);
+        sb.append("| -------- | ----- | ----- |").append(newline);
+        sb.append("| generator name | "+config.getName()+" | pass this to the generate command after -g |").append(newline);
+        sb.append("| generator stability | "+config.getGeneratorMetadata().getStability()+" | |").append(newline);
+        sb.append("| generator type | "+config.getTag()+" | |").append(newline);
+        if (config.generatorLanguage() != null) {
+            sb.append("| generator language | "+config.generatorLanguage().toString()+" | |").append(newline);
+        }
+        if (config.generatorLanguageVersion() != null) {
+            sb.append("| generator language version | "+config.generatorLanguageVersion()+" | |").append(newline);
+        }
+        sb.append("| generator default templating engine | "+config.defaultTemplatingEngine()+" | |").append(newline);
+        sb.append("| helpTxt | "+config.getHelp()+" | |").append(newline);
+
+        sb.append(newline);
+    }
+
+    private void generateMarkdownHelp(StringBuilder sb, CodegenConfig config) {
+        if (Boolean.TRUE.equals(markdownHeader)) {
+            sb.append("---").append(newline);
+            sb.append("title: Documentation for the " + generatorName + " Generator").append(newline);
+            sb.append("---").append(newline);
+            sb.append(newline);
+        }
+
+        if (Boolean.TRUE.equals(metadata)) {
+            generateMdMetadata(sb, config);
+        }
+
+        generateMdConfigOptionsHeader(sb, config);
+        generateMdConfigOptions(sb, config);
 
         if (Boolean.TRUE.equals(importMappings)) {
-            sb.append(newline).append("## IMPORT MAPPING").append(newline).append(newline);
-
-            sb.append("| Type/Alias | Imports |").append(newline);
-            sb.append("| ---------- | ------- |").append(newline);
-
-            config.importMapping()
-                    .entrySet()
-                    .stream()
-                    .sorted(Map.Entry.comparingByKey())
-                    .forEachOrdered(kvp -> {
-                        sb.append("|").append(escapeHtml4(kvp.getKey())).append("|").append(escapeHtml4(kvp.getValue())).append("|");
-                        sb.append(newline);
-                    });
-
-            sb.append(newline);
+            generateMdImportMappings(sb, config);
         }
 
         if (Boolean.TRUE.equals(instantiationTypes)) {
-            sb.append(newline).append("## INSTANTIATION TYPES").append(newline).append(newline);
-
-            sb.append("| Type/Alias | Instantiated By |").append(newline);
-            sb.append("| ---------- | --------------- |").append(newline);
-
-            config.instantiationTypes()
-                    .entrySet()
-                    .stream()
-                    .sorted(Map.Entry.comparingByKey())
-                    .forEachOrdered(kvp -> {
-                        sb.append("|").append(escapeHtml4(kvp.getKey())).append("|").append(escapeHtml4(kvp.getValue())).append("|");
-                        sb.append(newline);
-                    });
-
-            sb.append(newline);
+            generateMdInstantiationTypes(sb, config);
         }
 
         if (Boolean.TRUE.equals(languageSpecificPrimitives)) {
-            sb.append(newline).append("## LANGUAGE PRIMITIVES").append(newline).append(newline);
-
-            sb.append("<ul class=\"column-ul\">").append(newline);
-            config.languageSpecificPrimitives()
-                    .stream()
-                    .sorted(String::compareTo)
-                    .forEach(s -> sb.append("<li>").append(escapeHtml4(s)).append("</li>").append(newline));
-            sb.append("</ul>").append(newline);
+            generateMdLanguageSpecificPrimitives(sb, config);
         }
 
         if (Boolean.TRUE.equals(reservedWords)) {
-            sb.append(newline).append("## RESERVED WORDS").append(newline).append(newline);
-
-            sb.append("<ul class=\"column-ul\">").append(newline);
-            config.reservedWords()
-                    .stream()
-                    .sorted(String::compareTo)
-                    .forEach(s -> sb.append("<li>").append(escapeHtml4(s)).append("</li>").append(newline));
-            sb.append("</ul>").append(newline);
+            generateMdReservedWords(sb, config);
         }
 
         if (Boolean.TRUE.equals(featureSets)) {
-            sb.append(newline).append("## FEATURE SET").append(newline).append(newline);
-
-            List<FeatureSet.FeatureSetFlattened> flattened = config.getGeneratorMetadata().getFeatureSet().flatten();
-            flattened.sort(Comparator.comparing(FeatureSet.FeatureSetFlattened::getFeatureCategory));
-
-            AtomicReference<String> lastCategory = new AtomicReference<>();
-            flattened.forEach(featureSet -> {
-                if (!featureSet.getFeatureCategory().equals(lastCategory.get())) {
-                    lastCategory.set(featureSet.getFeatureCategory());
-
-                    String[] header = StringUtils.splitByCharacterTypeCamelCase(featureSet.getFeatureCategory());
-                    sb.append(newline).append("### ").append(StringUtils.join(header, " ")).append(newline);
-
-                    sb.append("| Name | Supported | Defined By |").append(newline);
-                    sb.append("| ---- | --------- | ---------- |").append(newline);
-                }
-
-                // Appends a ✓ or ✗ for support
-                sb.append("|").append(featureSet.getFeatureName())
-                  .append("|").append(featureSet.isSupported() ? "✓" : "✗")
-                  .append("|").append(StringUtils.join(featureSet.getSource(), ","))
-                  .append(newline);
-            });
+            generateMdFeatureSets(sb, config);
         }
     }
 
diff --git a/modules/openapi-generator-core/src/main/java/org/openapitools/codegen/config/WorkflowSettings.java b/modules/openapi-generator-core/src/main/java/org/openapitools/codegen/config/WorkflowSettings.java
index e2feddb9822..64e426fa68a 100644
--- a/modules/openapi-generator-core/src/main/java/org/openapitools/codegen/config/WorkflowSettings.java
+++ b/modules/openapi-generator-core/src/main/java/org/openapitools/codegen/config/WorkflowSettings.java
@@ -46,7 +46,7 @@ public class WorkflowSettings {
     public static final boolean DEFAULT_ENABLE_MINIMAL_UPDATE = false;
     public static final boolean DEFAULT_STRICT_SPEC_BEHAVIOR = true;
     public static final boolean DEFAULT_GENERATE_ALIAS_AS_MODEL = false;
-    public static final String DEFAULT_TEMPLATING_ENGINE_NAME = "mustache";
+    public static final String DEFAULT_TEMPLATING_ENGINE_NAME = null; // this is set by the generator
     public static final Map<String, String> DEFAULT_GLOBAL_PROPERTIES = Collections.unmodifiableMap(new HashMap<>());
 
     private String inputSpec;
diff --git a/modules/openapi-generator-gradle-plugin/README.adoc b/modules/openapi-generator-gradle-plugin/README.adoc
index f3ba58cc7c1..51f6e08e15f 100644
--- a/modules/openapi-generator-gradle-plugin/README.adoc
+++ b/modules/openapi-generator-gradle-plugin/README.adoc
@@ -398,7 +398,7 @@ openApiGenerate {
     // other settings omitted
     globalProperties = [
         apis: "",
-        models: "User,Pet"
+        models: "User:Pet"
     ]
 }
 ----
diff --git a/modules/openapi-generator-maven-plugin/README.md b/modules/openapi-generator-maven-plugin/README.md
index 9a9abb68620..be709bea8af 100644
--- a/modules/openapi-generator-maven-plugin/README.md
+++ b/modules/openapi-generator-maven-plugin/README.md
@@ -116,12 +116,12 @@ For configuration options documented as a **map** above, the key/value options m
 ```
 
 This configuration node location will match that of the plugin configuration examples at the top of this document and in the section below. Here, `option` matches in option name in the first column in the table from the previous section.
-The `key` and `value` text are any values you'd like to provide for that option. As an example, to configure `globalProperties` to match the `--global-property models=User,Pet` example from our [Selective Generation](https://openapi-generator.tech/docs/customization#selective-generation) documentation, see below.
+The `key` and `value` text are any values you'd like to provide for that option. As an example, to configure `globalProperties` to match the `--global-property models=User:Pet` example from our [Selective Generation](https://openapi-generator.tech/docs/customization#selective-generation) documentation, see below.
 
 ```xml
 <configuration>
     <globalProperties>
-       <models>User,Pet</models>
+       <models>User:Pet</models>
     </globalProperties>
 </configuration>
 ```
@@ -131,7 +131,7 @@ Not that some of these environment variable options may overwrite or conflict wi
 ```xml
 <configuration>
     <generateModels>true</generateModels>
-    <modelsToGenerate>User,Pet</modelsToGenerate>
+    <modelsToGenerate>User:Pet</modelsToGenerate>
 </configuration>
 ```
 
diff --git a/modules/openapi-generator-maven-plugin/examples/camel.xml b/modules/openapi-generator-maven-plugin/examples/camel.xml
new file mode 100644
index 00000000000..afcc2632bc3
--- /dev/null
+++ b/modules/openapi-generator-maven-plugin/examples/camel.xml
@@ -0,0 +1,198 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>org.openapitools</groupId>
+	<artifactId>sample-project</artifactId>
+	<packaging>jar</packaging>
+	<version>1.0-SNAPSHOT</version>
+	<name>sample-project</name>
+	<url>https://maven.apache.org</url>
+
+
+	<build>
+		<plugins>
+			<!-- activate the plugin -->
+			<plugin>
+				<groupId>org.openapitools</groupId>
+				<artifactId>openapi-generator-maven-plugin</artifactId>
+				<!-- RELEASE_VERSION -->
+				<version>5.3.1-SNAPSHOT</version>
+				<!-- /RELEASE_VERSION -->
+				<executions>
+					<execution>
+						<id>camel-server</id>
+						<goals>
+							<goal>generate</goal>
+						</goals>
+						<configuration>
+							<!-- specify the swagger yaml -->
+							<inputSpec>${project.basedir}/swagger.yaml</inputSpec>
+
+							<!-- target to generate java client code -->
+							<generatorName>camel</generatorName>
+
+							<!-- hint: if you want to generate java server code, e.g. based on Spring Boot,
+								 you can use the following target: <generatorName>spring</generatorName> -->
+
+							<!-- pass any necessary config options -->
+							<configOptions>
+								<camelRestBindingMode>auto</camelRestBindingMode>
+								<useBeanValidation>true</useBeanValidation>
+								<performBeanValidation>true</performBeanValidation>
+								<camelDataformatProperties>json.out.disableFeatures=WRITE_DATES_AS_TIMESTAMPS</camelDataformatProperties>
+								<withXml>true</withXml>
+								<jackson>true</jackson>
+								<camelUseDefaulValidationtErrorProcessor>true</camelUseDefaulValidationtErrorProcessor>
+								<!--
+								Define bean validation error processor
+								<camelUseDefaulValidationtErrorProcessor>false</camelUseDefaulValidationtErrorProcessor>
+								<camelValidationErrorProcessor>errorProcessorBeanName</camelValidationErrorProcessor>
+								-->
+								<camelRestClientRequestValidation>true</camelRestClientRequestValidation>
+								<camelSecurityDefinitions>true</camelSecurityDefinitions>
+							</configOptions>
+
+						</configuration>
+					</execution>
+
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.1</version>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+					<proc>none</proc>
+				</configuration>
+			</plugin>
+		</plugins>
+		<pluginManagement>
+		</pluginManagement>
+	</build>
+	<pluginRepositories>
+		<pluginRepository>
+			<id>sonatype-snapshots</id>
+			<url>https://oss.sonatype.org/content/repositories/snapshots/</url>
+		</pluginRepository>
+	</pluginRepositories>
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.apache.camel</groupId>
+				<artifactId>camel-bom</artifactId>
+				<version>3.13.0</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+			<dependency>
+				<groupId>org.apache.camel.springboot</groupId>
+				<artifactId>camel-spring-boot-bom</artifactId>
+				<version>3.13.0</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+			<dependency>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-dependencies</artifactId>
+				<version>2.6.1</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.apache.camel.springboot</groupId>
+			<artifactId>camel-spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.apache.camel.springboot</groupId>
+			<artifactId>camel-servlet-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.openapitools</groupId>
+			<artifactId>jackson-databind-nullable</artifactId>
+			<version>0.2.1</version>
+		</dependency>
+		<dependency>
+			<groupId>io.swagger</groupId>
+			<artifactId>swagger-annotations</artifactId>
+			<version>1.6.3</version>
+		</dependency>
+		<dependency>
+			<groupId>io.swagger.core.v3</groupId>
+			<artifactId>swagger-annotations</artifactId>
+			<version>2.1.11</version>
+		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.datatype</groupId>
+			<artifactId>jackson-datatype-jsr310</artifactId>
+			<version>2.13.0</version>
+		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.datatype</groupId>
+			<artifactId>jackson-datatype-jdk8</artifactId>
+			<version>2.13.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.camel</groupId>
+			<artifactId>camel-jackson</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.camel</groupId>
+			<artifactId>camel-jacksonxml</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.apache.camel</groupId>
+			<artifactId>camel-jaxb</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.camel</groupId>
+			<artifactId>camel-direct</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.apache.camel</groupId>
+			<artifactId>camel-bean-validator</artifactId>
+		</dependency>
+
+		<!-- Test dependencies -->
+		<dependency>
+			<groupId>com.mashape.unirest</groupId>
+			<artifactId>unirest-java</artifactId>
+			<version>1.4.9</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.apache.camel</groupId>
+			<artifactId>camel-test-spring-junit5</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+	</dependencies>
+
+	<properties>
+		<swagger-annotations-version>1.5.8</swagger-annotations-version>
+
+		<spring-boot-starter-web.version>2.2.1.RELEASE</spring-boot-starter-web.version>
+		<springfox-version>2.8.0</springfox-version>
+	</properties>
+</project>
diff --git a/modules/openapi-generator-maven-plugin/examples/spring.xml b/modules/openapi-generator-maven-plugin/examples/spring.xml
index c8600311f79..d824117438e 100644
--- a/modules/openapi-generator-maven-plugin/examples/spring.xml
+++ b/modules/openapi-generator-maven-plugin/examples/spring.xml
@@ -40,6 +40,7 @@
 
 							<!-- pass any necessary config options -->
 							<configOptions>
+								<documentationProvider>springfox</documentationProvider>
 								<serializableModel>true</serializableModel>
 								<snapshotVersion>true</snapshotVersion>
 							</configOptions>
diff --git a/modules/openapi-generator/pom.xml b/modules/openapi-generator/pom.xml
index 90172b09fa6..b637e18870e 100644
--- a/modules/openapi-generator/pom.xml
+++ b/modules/openapi-generator/pom.xml
@@ -338,7 +338,7 @@
         <dependency>
             <groupId>com.github.javaparser</groupId>
             <artifactId>javaparser-core</artifactId>
-            <version>3.14.11</version>
+            <version>3.24.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConfig.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConfig.java
index 5dc77787e60..952d3a841f2 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConfig.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConfig.java
@@ -304,4 +304,14 @@ public interface CodegenConfig {
     void setRemoveEnumValuePrefix(boolean removeEnumValuePrefix);
 
     Schema unaliasSchema(Schema schema, Map<String, String> usedImportMappings);
+
+    public String defaultTemplatingEngine();
+
+    public GeneratorLanguage generatorLanguage();
+
+    /*
+    the version of the language that the generator implements
+    For python 3.9.0, generatorLanguageVersion would be "3.9.0"
+    */
+    public String generatorLanguageVersion();
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java
index ffbd0c5e0a4..d0906a4caf0 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java
@@ -35,6 +35,8 @@ public class CodegenConstants {
     public static final String SKIP_FORM_MODEL = "skipFormModel";
     /* /end System Properties */
 
+    public static final String API_NAME = "apiName";
+
     public static final String API_PACKAGE = "apiPackage";
     public static final String API_PACKAGE_DESC = "package for generated api classes";
 
@@ -212,10 +214,10 @@ public class CodegenConstants {
     public static final String PARAM_NAMING_DESC = "Naming convention for parameters: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name";
 
     public static final String DOTNET_FRAMEWORK = "targetFramework";
-    public static final String DOTNET_FRAMEWORK_DESC = "The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.0`";
+    public static final String DOTNET_FRAMEWORK_DESC = "The target .NET framework version. To target multiple frameworks, use `;` as the separator, e.g. `netstandard2.1;netcoreapp3.1`";
 
     public static final String NULLABLE_REFERENCE_TYPES = "nullableReferenceTypes";
-    public static final String NULLABLE_REFERENCE_TYPES_DESC = "Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.0 or newer.";
+    public static final String NULLABLE_REFERENCE_TYPES_DESC = "Use nullable annotations in the project. Only supported on C# 8 / ASP.NET Core 3.1 or newer.";
 
     public static final String TEMPLATING_ENGINE = "templatingEngine";
     public static final String TEMPLATING_ENGINE_DESC = "The templating engine plugin to use: \"mustache\" (default) or \"handlebars\" (beta)";
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java
index bba6ad2789d..960011d0618 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java
@@ -64,7 +64,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
     public String defaultValue;
     public String arrayModelType;
     public boolean isAlias; // Is this effectively an alias of another simple type
-    public boolean isString, isInteger, isLong, isNumber, isNumeric, isFloat, isDouble, isDate, isDateTime, isShort, isUnboundedInteger, isPrimitiveType, isBoolean;
+    public boolean isString, isInteger, isLong, isNumber, isNumeric, isFloat, isDouble, isDate, isDateTime, isDecimal, isShort, isUnboundedInteger, isPrimitiveType, isBoolean;
     private boolean additionalPropertiesIsAnyType;
     public List<CodegenProperty> vars = new ArrayList<>(); // all properties (without parent's properties)
     public List<CodegenProperty> allVars = new ArrayList<>(); // all properties (with parent's properties)
@@ -864,6 +864,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
                 hasOnlyReadOnly == that.hasOnlyReadOnly &&
                 isNull == that.isNull &&
                 hasValidation == that.hasValidation &&
+                isDecimal == that.isDecimal &&
                 hasMultipleTypes == that.getHasMultipleTypes() &&
                 hasDiscriminatorWithNonEmptyMapping == that.getHasDiscriminatorWithNonEmptyMapping() &&
                 getIsAnyType() == that.getIsAnyType() &&
@@ -942,7 +943,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
                 getMinItems(), getMaxLength(), getMinLength(), getExclusiveMinimum(), getExclusiveMaximum(), getMinimum(),
                 getMaximum(), getPattern(), getMultipleOf(), getItems(), getAdditionalProperties(), getIsModel(),
                 getAdditionalPropertiesIsAnyType(), hasDiscriminatorWithNonEmptyMapping,
-                isAnyType, getComposedSchemas(), hasMultipleTypes);
+                isAnyType, getComposedSchemas(), hasMultipleTypes, isDecimal);
     }
 
     @Override
@@ -1036,6 +1037,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
         sb.append(", getIsAnyType=").append(getIsAnyType());
         sb.append(", composedSchemas=").append(composedSchemas);
         sb.append(", hasMultipleTypes=").append(hasMultipleTypes);
+        sb.append(", isDecimal=").append(isDecimal);
         sb.append('}');
         return sb.toString();
     }
@@ -1059,6 +1061,9 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
         this.emptyVars = emptyVars;
     }
 
+    public boolean getHasItems() {
+        return this.items != null;
+    }
     /**
      * Remove duplicated properties in all variable list
      */
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java
index d48b75843af..8a848eaf9ac 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java
@@ -764,5 +764,10 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
     public void setContent(LinkedHashMap<String, CodegenMediaType> content) {
         this.content = content;
     }
+
+    @Override
+    public String getBaseType() {
+        return baseType;
+    }
 }
 
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java
index ac78261510f..8c1bdeb57dc 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java
@@ -786,6 +786,10 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
         this.hasDiscriminatorWithNonEmptyMapping = hasDiscriminatorWithNonEmptyMapping;
     }
 
+    public boolean getHasItems() {
+        return this.items != null;
+    }
+
     @Override
     public boolean getIsString() { return isString; }
 
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java
index 6cc2cd63f90..0f7b111bcab 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java
@@ -622,4 +622,9 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
 
     @Override
     public void setHasMultipleTypes(boolean hasMultipleTypes) { this.hasMultipleTypes = hasMultipleTypes; }
+
+    @Override
+    public String getBaseType() {
+        return baseType;
+    }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index 8a96688f5fa..1ff9e2ddd09 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -1595,8 +1595,6 @@ public class DefaultCodegen implements CodegenConfig {
         typeMapping.put("array", "List");
         typeMapping.put("set", "Set");
         typeMapping.put("map", "Map");
-        typeMapping.put("List", "List");
-        typeMapping.put("Set", "Set");
         typeMapping.put("boolean", "Boolean");
         typeMapping.put("string", "String");
         typeMapping.put("int", "Integer");
@@ -2731,7 +2729,6 @@ public class DefaultCodegen implements CodegenConfig {
             addParentContainer(m, name, schema);
         } else if (ModelUtils.isIntegerSchema(schema)) { // integer type
             // NOTE: Integral schemas as CodegenModel is a rare use case and may be removed at a later date.
-
             m.isNumeric = Boolean.TRUE;
             if (ModelUtils.isLongSchema(schema)) { // int64/long format
                 m.isLong = Boolean.TRUE;
@@ -2823,6 +2820,7 @@ public class DefaultCodegen implements CodegenConfig {
                 postProcessModelProperty(m, prop);
             }
         }
+
         return m;
     }
 
@@ -2870,16 +2868,15 @@ public class DefaultCodegen implements CodegenConfig {
         }
     }
 
-
-        /**
-         * Recursively look in Schema sc for the discriminator discPropName
-         * and return a CodegenProperty with the dataType and required params set
-         * the returned CodegenProperty may not be required and it may not be of type string
-         *
-         * @param composedSchemaName The name of the sc Schema
-         * @param sc                 The Schema that may contain the discriminator
-         * @param discPropName       The String that is the discriminator propertyName in the schema
-         */
+    /**
+     * Recursively look in Schema sc for the discriminator discPropName
+     * and return a CodegenProperty with the dataType and required params set
+     * the returned CodegenProperty may not be required and it may not be of type string
+     *
+     * @param composedSchemaName The name of the sc Schema
+     * @param sc                 The Schema that may contain the discriminator
+     * @param discPropName       The String that is the discriminator propertyName in the schema
+     */
     private CodegenProperty discriminatorFound(String composedSchemaName, Schema sc, String discPropName, OpenAPI openAPI) {
         Schema refSchema = ModelUtils.getReferencedSchema(openAPI, sc);
         if (refSchema.getProperties() != null && refSchema.getProperties().get(discPropName) != null) {
@@ -4852,10 +4849,13 @@ public class DefaultCodegen implements CodegenConfig {
                     // This scheme may have to be changed when it is officially registered with IANA.
                     cs.isHttpSignature = true;
                     once(LOGGER).warn("Security scheme 'HTTP signature' is a draft IETF RFC and subject to change.");
+                } else {
+                    once(LOGGER).warn("Unknown scheme `{}` found in the HTTP security definition.", securityScheme.getScheme());
                 }
                 codegenSecurities.add(cs);
             } else if (SecurityScheme.Type.OAUTH2.equals(securityScheme.getType())) {
                 final OAuthFlows flows = securityScheme.getFlows();
+                boolean isFlowEmpty = true;
                 if (securityScheme.getFlows() == null) {
                     throw new RuntimeException("missing oauth flow in " + key);
                 }
@@ -4865,6 +4865,7 @@ public class DefaultCodegen implements CodegenConfig {
                     cs.isPassword = true;
                     cs.flow = "password";
                     codegenSecurities.add(cs);
+                    isFlowEmpty = false;
                 }
                 if (flows.getImplicit() != null) {
                     final CodegenSecurity cs = defaultOauthCodegenSecurity(key, securityScheme);
@@ -4872,6 +4873,7 @@ public class DefaultCodegen implements CodegenConfig {
                     cs.isImplicit = true;
                     cs.flow = "implicit";
                     codegenSecurities.add(cs);
+                    isFlowEmpty = false;
                 }
                 if (flows.getClientCredentials() != null) {
                     final CodegenSecurity cs = defaultOauthCodegenSecurity(key, securityScheme);
@@ -4879,6 +4881,7 @@ public class DefaultCodegen implements CodegenConfig {
                     cs.isApplication = true;
                     cs.flow = "application";
                     codegenSecurities.add(cs);
+                    isFlowEmpty = false;
                 }
                 if (flows.getAuthorizationCode() != null) {
                     final CodegenSecurity cs = defaultOauthCodegenSecurity(key, securityScheme);
@@ -4886,7 +4889,14 @@ public class DefaultCodegen implements CodegenConfig {
                     cs.isCode = true;
                     cs.flow = "accessCode";
                     codegenSecurities.add(cs);
+                    isFlowEmpty = false;
                 }
+
+                if (isFlowEmpty) {
+                    once(LOGGER).error("Invalid flow definition defined in the security scheme: {}", flows);
+                }
+            } else {
+                once(LOGGER).error("Unknown type `{}` found in the security definition `{}`.", securityScheme.getType(), securityScheme.getName());
             }
         }
 
@@ -5121,12 +5131,32 @@ public class DefaultCodegen implements CodegenConfig {
         }
     }
 
+    protected void addImports(CodegenModel m, IJsonSchemaValidationProperties type) {
+        addImports(m.imports, type);
+    }
+
+    protected void addImports(Set<String> importsToBeAddedTo, IJsonSchemaValidationProperties type) {
+        addImports(importsToBeAddedTo, type.getImports(true));
+    }
+
+    protected void addImports(Set<String> importsToBeAddedTo, Set<String> importsToAdd) {
+        importsToAdd.stream().forEach(i -> addImport(importsToBeAddedTo, i));
+    }
+
     protected void addImport(CodegenModel m, String type) {
-        if (type != null && needToImport(type)) {
-            m.imports.add(type);
+        addImport(m.imports, type);
+    }
+
+    private void addImport(Set<String> importsToBeAddedTo, String type) {
+        if (shouldAddImport(type)) {
+            importsToBeAddedTo.add(type);
         }
     }
 
+    private boolean shouldAddImport(String type) {
+        return type != null && needToImport(type);
+    }
+
     /**
      * Loop through properties and unalias the reference if $ref (reference) is defined
      *
@@ -5199,7 +5229,7 @@ public class DefaultCodegen implements CodegenConfig {
      * @param properties a map of properties (schema)
      * @param mandatory  a set of required properties' name
      */
-    private void addVars(IJsonSchemaValidationProperties m, List<CodegenProperty> vars, Map<String, Schema> properties, Set<String> mandatory) {
+    protected void addVars(IJsonSchemaValidationProperties m, List<CodegenProperty> vars, Map<String, Schema> properties, Set<String> mandatory) {
         if (properties == null) {
             return;
         }
@@ -5263,17 +5293,10 @@ public class DefaultCodegen implements CodegenConfig {
      * @param property The codegen representation of the OAS schema's property.
      */
     protected void addImportsForPropertyType(CodegenModel model, CodegenProperty property) {
-        // TODO revise the logic to include map
         if (property.isContainer) {
-            addImport(model, typeMapping.get("array"));
-        }
-
-        addImport(model, property.baseType);
-        CodegenProperty innerCp = property;
-        while (innerCp != null) {
-            addImport(model, innerCp.complexType);
-            innerCp = innerCp.items;
+            addImport(model.imports, typeMapping.get("array"));
         }
+        addImports(model, property);
     }
 
     /**
@@ -6728,6 +6751,9 @@ public class DefaultCodegen implements CodegenConfig {
             CodegenProperty schemaProp = fromProperty(toMediaTypeSchemaName(contentType, mediaTypeSchemaSuffix), mt.getSchema());
             CodegenMediaType codegenMt = new CodegenMediaType(schemaProp, ceMap);
             cmtContent.put(contentType, codegenMt);
+            if (schemaProp != null) {
+                addImports(imports, schemaProp.getImports(false));
+            }
         }
         return cmtContent;
     }
@@ -6826,7 +6852,7 @@ public class DefaultCodegen implements CodegenConfig {
         return codegenParameter;
     }
 
-    private void addVarsRequiredVarsAdditionalProps(Schema schema, IJsonSchemaValidationProperties property){
+    protected void addVarsRequiredVarsAdditionalProps(Schema schema, IJsonSchemaValidationProperties property){
         setAddProps(schema, property);
         if (!"object".equals(schema.getType())) {
             return;
@@ -7357,4 +7383,15 @@ public class DefaultCodegen implements CodegenConfig {
         }
         return xOf;
     }
+
+    @Override
+    public String defaultTemplatingEngine() {
+        return "mustache";
+    }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVA; }
+
+    @Override
+    public String generatorLanguageVersion() { return null; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
index 815342dfea7..aaa30709e10 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
@@ -41,6 +41,7 @@ import org.openapitools.codegen.api.TemplatingEngineAdapter;
 import org.openapitools.codegen.api.TemplateFileType;
 import org.openapitools.codegen.ignore.CodegenIgnoreProcessor;
 import org.openapitools.codegen.languages.PythonClientCodegen;
+import org.openapitools.codegen.languages.PythonExperimentalClientCodegen;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.serializer.SerializerUtils;
@@ -350,7 +351,7 @@ public class DefaultGenerator implements Generator {
                 if (modelTestFile.exists()) {
                     this.templateProcessor.skip(modelTestFile.toPath(), "Test files never overwrite an existing file of the same name.");
                 } else {
-                    File written = processTemplateToFile(models, templateName, filename, generateModelTests, CodegenConstants.MODEL_TESTS);
+                    File written = processTemplateToFile(models, templateName, filename, generateModelTests, CodegenConstants.MODEL_TESTS, config.modelTestFileFolder());
                     if (written != null) {
                         files.add(written);
                         if (config.isEnablePostProcessFile() && !dryRun) {
@@ -436,19 +437,6 @@ public class DefaultGenerator implements Generator {
         // process models only
         for (String name : modelKeys) {
             try {
-                //don't generate models that have an import mapping
-                if (config.importMapping().containsKey(name)) {
-                    LOGGER.debug("Model {} not imported due to import mapping", name);
-
-                    for (String templateName : config.modelTemplateFiles().keySet()) {
-                        // HACK: Because this returns early, could lead to some invalid model reporting.
-                        String filename = config.modelFilename(templateName, name);
-                        Path path = java.nio.file.Paths.get(filename);
-                        this.templateProcessor.skip(path,"Skipped prior to model processing due to import mapping conflict (either by user or by generator)." );
-                    }
-                    continue;
-                }
-
                 // don't generate models that are not used as object (e.g. form parameters)
                 if (unusedModels.contains(name)) {
                     if (Boolean.FALSE.equals(skipFormModel)) {
@@ -516,18 +504,13 @@ public class DefaultGenerator implements Generator {
             Map<String, Object> models = (Map<String, Object>) allProcessedModels.get(modelName);
             models.put("modelPackage", config.modelPackage());
             try {
-                //don't generate models that have an import mapping
-                if (config.importMapping().containsKey(modelName)) {
-                    continue;
-                }
-
                 // TODO revise below as we've already performed unaliasing so that the isAlias check may be removed
                 List<Object> modelList = (List<Object>) models.get("models");
                 if (modelList != null && !modelList.isEmpty()) {
                     Map<String, Object> modelTemplate = (Map<String, Object>) modelList.get(0);
                     if (modelTemplate != null && modelTemplate.containsKey("model")) {
                         CodegenModel m = (CodegenModel) modelTemplate.get("model");
-                        if (m.isAlias && !(config instanceof PythonClientCodegen))  {
+                        if (m.isAlias && !((config instanceof PythonClientCodegen) || (config instanceof PythonExperimentalClientCodegen)))  {
                             // alias to number, string, enum, etc, which should not be generated as model
                             // for PythonClientCodegen, all aliases are generated as models
                             continue;  // Don't create user-defined classes for aliases
@@ -656,7 +639,7 @@ public class DefaultGenerator implements Generator {
                     if (apiTestFile.exists()) {
                         this.templateProcessor.skip(apiTestFile.toPath(), "Test files never overwrite an existing file of the same name.");
                     } else {
-                        File written = processTemplateToFile(operation, templateName, filename, generateApiTests, CodegenConstants.API_TESTS);
+                        File written = processTemplateToFile(operation, templateName, filename, generateApiTests, CodegenConstants.API_TESTS, config.apiTestFileFolder());
                         if (written != null) {
                             files.add(written);
                             if (config.isEnablePostProcessFile() && !dryRun) {
@@ -787,6 +770,7 @@ public class DefaultGenerator implements Generator {
         bundle.put("apiFolder", config.apiPackage().replace('.', File.separatorChar));
         bundle.put("modelPackage", config.modelPackage());
         bundle.put("library", config.getLibrary());
+        bundle.put("generatorLanguageVersion", config.generatorLanguageVersion());
         // todo verify support and operation bundles have access to the common variables
 
         addAuthenticationSwitches(bundle);
@@ -1034,11 +1018,15 @@ public class DefaultGenerator implements Generator {
     }
 
     protected File processTemplateToFile(Map<String, Object> templateData, String templateName, String outputFilename, boolean shouldGenerate, String skippedByOption) throws IOException {
+        return processTemplateToFile(templateData, templateName, outputFilename, shouldGenerate, skippedByOption, this.config.getOutputDir());
+    }
+
+    private File processTemplateToFile(Map<String, Object> templateData, String templateName, String outputFilename, boolean shouldGenerate, String skippedByOption, String intendedOutputDir) throws IOException {
         String adjustedOutputFilename = outputFilename.replaceAll("//", "/").replace('/', File.separatorChar);
         File target = new File(adjustedOutputFilename);
         if (ignoreProcessor.allowsFile(target)) {
             if (shouldGenerate) {
-                Path outDir = java.nio.file.Paths.get(this.config.getOutputDir()).toAbsolutePath();
+                Path outDir = java.nio.file.Paths.get(intendedOutputDir).toAbsolutePath();
                 Path absoluteTarget = target.toPath().toAbsolutePath();
                 if (!absoluteTarget.startsWith(outDir)) {
                     throw new RuntimeException(String.format(Locale.ROOT, "Target files must be generated within the output directory; absoluteTarget=%s outDir=%s", absoluteTarget, outDir));
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/GeneratorLanguage.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/GeneratorLanguage.java
new file mode 100644
index 00000000000..b7248350253
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/GeneratorLanguage.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen;
+
+public enum GeneratorLanguage {
+    /*
+    Not defined because they use the default Java language:
+    Android
+
+    Note: all documentation generators have generatorLanguage set to null
+     */
+    JAVA("Java"), ADA("Ada"), APEX("Apex"), BASH("Bash"), C("C"),
+    CLOJURE("Clojure"), C_PLUS_PLUS("C++"), CRYSTAL("Crystal"), C_SHARP("C#"),
+    DART("Dart"), EIFFEL("Eiffel"), ELIXIR("Elixir"), ELM("Elm"),
+    ERLANG("Erlang"), FLASH("Flash"), F_SHARP("F#"), GO("Go"),
+    JAVASCRIPT("Javascript"), GRAPH_QL("GraphQL"), GROOVY("Groovy"),
+    HASKELL("Haskell"), TYPESCRIPT("Typescript"), K_SIX("k6"), KOTLIN("Kotlin"),
+    KTORM("Ktorm"), LUA("Lua"), MYSQL("Mysql"), NIM("Nim"),
+    OBJECTIVE_C("Objective-C"), OCAML("OCaml"), PERL("Perl"), PHP("PHP"),
+    POWERSHELL("PowerShell"), PROTOBUF("Protocol Buffers (Protobuf)"), PYTHON("Python"),
+    R("R"), RUBY("Ruby"), RUST("Rust"), SCALA("Scala"), SWIFT("Swift"),
+    WSDL("Web Services Description Language (WSDL)");
+
+    private final String label;
+
+    private GeneratorLanguage(String label) {
+        this.label = label;
+    }
+
+    @Override
+    public String toString() {
+        return this.label;
+    }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java
index 0a4a2d7eec5..d0ce99e5423 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java
@@ -1,6 +1,10 @@
 package org.openapitools.codegen;
 
+import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
+import java.util.stream.Stream;
 
 import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.utils.ModelUtils;
@@ -217,4 +221,51 @@ public interface IJsonSchemaValidationProperties {
             setIsAnyType(true);
         }
     }
+
+    /**
+     * @return basic type - no generics supported.
+     */
+    default String getBaseType() {
+        return null;
+    };
+
+    /**
+     * @return complex type that can contain type parameters - like {@code List<Items>} for Java
+     */
+    default String getComplexType() {
+        return getBaseType();
+    };
+
+    /**
+     * Recursively collect all necessary imports to include so that the type may be resolved.
+     *
+     * @param includeContainerTypes whether or not to include the container types in the returned imports.
+     * @return all of the imports
+     */
+    default Set<String> getImports(boolean includeContainerTypes) {
+        Set<String> imports = new HashSet<>();
+        if (this.getComposedSchemas() != null) {
+            CodegenComposedSchemas composed = (CodegenComposedSchemas) this.getComposedSchemas();
+            List<CodegenProperty> allOfs =  composed.getAllOf() == null ? Collections.emptyList() : composed.getAllOf();
+            List<CodegenProperty> oneOfs =  composed.getOneOf() == null ? Collections.emptyList() : composed.getOneOf();
+            Stream<CodegenProperty> innerTypes = Stream.concat(allOfs.stream(), oneOfs.stream());
+            innerTypes.flatMap(cp -> cp.getImports(includeContainerTypes).stream()).forEach(s -> imports.add(s));
+        } else if (includeContainerTypes || !(this.getIsArray() || this.getIsMap())) {
+            // this is our base case, add imports for referenced schemas
+            // this can't be broken out as a separate if block because Typescript only generates union types as A | B
+            // and would need to handle this differently
+            imports.add(this.getComplexType());
+            imports.add(this.getBaseType());
+        }
+        if (this.getItems() !=null && this.getIsArray()) {
+            imports.addAll(this.getItems().getImports(includeContainerTypes));
+        }
+        if (this.getAdditionalProperties() != null) {
+            imports.addAll(this.getAdditionalProperties().getImports(includeContainerTypes));
+        }
+        if (this.getVars() != null && !this.getVars().isEmpty()) {
+            this.getVars().stream().flatMap(v -> v.getImports(includeContainerTypes).stream()).forEach(s -> imports.add(s));
+        }
+        return imports;
+    }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java
index b5bd0b23c33..2bb65a47865 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java
@@ -79,8 +79,8 @@ public class CodegenConfigurator {
 
     }
 
-    @SuppressWarnings("DuplicatedCode")
     public static CodegenConfigurator fromFile(String configFile, Module... modules) {
+        // NOTE: some config parameters may be missing from the configFile and may be passed in as command line args
 
         if (isNotEmpty(configFile)) {
             DynamicSettings settings = readDynamicSettings(configFile, modules);
@@ -482,15 +482,17 @@ public class CodegenConfigurator {
         Validate.notEmpty(generatorName, "generator name must be specified");
         Validate.notEmpty(inputSpec, "input spec must be specified");
 
+        GeneratorSettings generatorSettings = generatorSettingsBuilder.build();
+        CodegenConfig config = CodegenConfigLoader.forName(generatorSettings.getGeneratorName());
         if (isEmpty(templatingEngineName)) {
-            // Built-in templates are mustache, but allow users to use a simplified handlebars engine for their custom templates.
-            workflowSettingsBuilder.withTemplatingEngineName("mustache");
+            // if templatingEngineName is empty check the config for a default
+            String defaultTemplatingEngine = config.defaultTemplatingEngine();
+            workflowSettingsBuilder.withTemplatingEngineName(defaultTemplatingEngine);
         } else {
             workflowSettingsBuilder.withTemplatingEngineName(templatingEngineName);
         }
 
         // at this point, all "additionalProperties" are set, and are now immutable per GeneratorSettings instance.
-        GeneratorSettings generatorSettings = generatorSettingsBuilder.build();
         WorkflowSettings workflowSettings = workflowSettingsBuilder.build();
 
         if (workflowSettings.isVerbose()) {
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractAdaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractAdaCodegen.java
index 9670576e7db..2473ebd97d1 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractAdaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractAdaCodegen.java
@@ -820,4 +820,7 @@ abstract public class AbstractAdaCodegen extends DefaultCodegen implements Codeg
         }
         return result;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.ADA; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java
index 14ee4ed6417..f0874648f65 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java
@@ -1058,7 +1058,7 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
             return importMapping.get(name);
         }
 
-        // memoization
+        // memoization and lookup in the cache
         String origName = name;
         if (schemaKeyToModelNameCache.containsKey(origName)) {
             return schemaKeyToModelNameCache.get(origName);
@@ -1072,27 +1072,27 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
             name = name + "_" + modelNameSuffix;
         }
 
-        name = sanitizeName(name);
+        name = camelize(sanitizeName(name));
 
         // model name cannot use reserved keyword, e.g. return
         if (isReservedWord(name)) {
             LOGGER.warn("{} (reserved word) cannot be used as model name. Renamed to {}", name, camelize("model_" + name));
-            name = "model_" + name; // e.g. return => ModelReturn (after camelize)
+            name = camelize("model_" + name); // e.g. return => ModelReturn (after camelize)
         }
 
         // model name starts with number
         if (name.matches("^\\d.*")) {
             LOGGER.warn("{} (model name starts with number) cannot be used as model name. Renamed to {}", name,
                     camelize("model_" + name));
-            name = "model_" + name; // e.g. 200Response => Model200Response (after camelize)
+            name = camelize("model_" + name); // e.g. 200Response => Model200Response (after camelize)
         }
 
-        String camelizedName = camelize(name);
-        schemaKeyToModelNameCache.put(origName, camelizedName);
+        // store in cache
+        schemaKeyToModelNameCache.put(origName, name);
 
         // camelize the model name
         // phone_number => PhoneNumber
-        return camelizedName;
+        return name;
     }
 
     @Override
@@ -1268,42 +1268,124 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
     }
 
     @Override
-    public void setParameterExampleValue(CodegenParameter codegenParameter) {
+    public void setParameterExampleValue(CodegenParameter p) {
+        String example;
 
-        // set the example value
-        // if not specified in x-example, generate a default value
-        // TODO need to revise how to obtain the example value
-        if (codegenParameter.vendorExtensions != null && codegenParameter.vendorExtensions.containsKey("x-example")) {
-            codegenParameter.example = Json.pretty(codegenParameter.vendorExtensions.get("x-example"));
-        } else if (Boolean.TRUE.equals(codegenParameter.isBoolean)) {
-            codegenParameter.example = "true";
-        } else if (Boolean.TRUE.equals(codegenParameter.isLong)) {
-            codegenParameter.example = "789";
-        } else if (Boolean.TRUE.equals(codegenParameter.isInteger)) {
-            codegenParameter.example = "56";
-        } else if (Boolean.TRUE.equals(codegenParameter.isFloat)) {
-            codegenParameter.example = "3.4F";
-        } else if (Boolean.TRUE.equals(codegenParameter.isDouble)) {
-            codegenParameter.example = "1.2D";
-        } else if (Boolean.TRUE.equals(codegenParameter.isNumber)) {
-            codegenParameter.example = "8.14";
-        } else if (Boolean.TRUE.equals(codegenParameter.isBinary)) {
-            codegenParameter.example = "BINARY_DATA_HERE";
-        } else if (Boolean.TRUE.equals(codegenParameter.isByteArray)) {
-            codegenParameter.example = "BYTE_ARRAY_DATA_HERE";
-        } else if (Boolean.TRUE.equals(codegenParameter.isFile)) {
-            codegenParameter.example = "/path/to/file.txt";
-        } else if (Boolean.TRUE.equals(codegenParameter.isDate)) {
-            codegenParameter.example = "2013-10-20";
-        } else if (Boolean.TRUE.equals(codegenParameter.isDateTime)) {
-            codegenParameter.example = "2013-10-20T19:20:30+01:00";
-        } else if (Boolean.TRUE.equals(codegenParameter.isUuid)) {
-            codegenParameter.example = "38400000-8cf0-11bd-b23e-10b96e4ef00d";
-        } else if (Boolean.TRUE.equals(codegenParameter.isUri)) {
-            codegenParameter.example = "https://openapi-generator.tech";
-        } else if (Boolean.TRUE.equals(codegenParameter.isString)) {
-            codegenParameter.example = codegenParameter.paramName + "_example";
+        boolean hasAllowableValues = p.allowableValues != null && !p.allowableValues.isEmpty();
+        if (hasAllowableValues) {
+            //support examples for inline enums
+            final List<Object> values = (List<Object>) p.allowableValues.get("values");
+            example = String.valueOf(values.get(0));
+        } else if (p.defaultValue == null) {
+            example = p.example;
+        } else {
+            example = p.defaultValue;
         }
+
+        String type = p.baseType;
+        if (type == null) {
+            type = p.dataType;
+        }
+
+        if (p.isString) {
+            if (example == null) {
+                example = p.paramName + "_example";
+            }
+            example = "\"" + escapeText(example) + "\"";
+        } else if (p.isInteger || p.isShort) {
+            if (example == null) {
+                example = "56";
+            }
+        } else if (p.isLong) {
+            if (example == null) {
+                example = "789";
+            }
+            example = StringUtils.appendIfMissingIgnoreCase(example, "L");
+        } else if (p.isFloat) {
+            if (example == null) {
+                example = "3.4F";
+            }
+            example = StringUtils.appendIfMissingIgnoreCase(example, "F");
+        } else if (p.isDouble) {
+            if (example == null) {
+                example = "1.2D";
+            }
+            example = StringUtils.appendIfMissingIgnoreCase(example, "D");
+        } else if (p.isNumber) {
+            if (example == null) {
+                example = "8.14";
+            }
+            example = StringUtils.appendIfMissingIgnoreCase(example, "D");
+        } else if (p.isBoolean) {
+            if (example == null) {
+                example = "true";
+            }
+        } else if (p.isBinary || p.isFile) {
+            if (example == null) {
+                example = "/path/to/file.txt";
+            }
+            example = "new System.IO.MemoryStream(System.IO.File.ReadAllBytes(\"" + escapeText(example) + "\"))";
+        } else if (p.isByteArray) {
+            if (example == null) {
+                example = "BYTE_ARRAY_DATA_HERE";
+            }
+            example = "System.Text.Encoding.ASCII.GetBytes(\"" + escapeText(example) + "\")";
+        } else if (p.isDate) {
+            if (example == null) {
+                example = "DateTime.Parse(\"2013-10-20\")";
+            } else {
+                example = "DateTime.Parse(\"" + example + "\")";
+            }
+        } else if (p.isDateTime) {
+            if (example == null) {
+                example = "DateTime.Parse(\"2013-10-20T19:20:30+01:00\")";
+            } else {
+                example = "DateTime.Parse(\"" + example + "\")";
+            }
+        } else if (p.isDecimal) {
+            if (example == null) {
+                example = "8.9M";
+            }
+            example = StringUtils.appendIfMissingIgnoreCase(example, "M");
+        } else if (p.isUuid) {
+            if (example == null) {
+                example = "\"38400000-8cf0-11bd-b23e-10b96e4ef00d\"";
+            } else {
+                example = "\"" + example + "\"";
+            }
+        } else if (p.isUri) {
+            if (example == null) {
+                example = "new Uri(\"https://openapi-generator.tech\")";
+            } else {
+                example = "new Uri(\"" + example + "\")";
+            }
+        } else if (hasAllowableValues) {
+            //parameter is enum defined as a schema component
+            example = "(" + type + ") \"" + example + "\"";
+        } else if (!languageSpecificPrimitives.contains(type)) {
+            // type is a model class, e.g. User
+            example = "new " + type + "()";
+        }
+
+        if (example == null) {
+            example = "null";
+        } else if (Boolean.TRUE.equals(p.isArray)) {
+            if (p.items.defaultValue != null) {
+                String innerExample;
+                if ("String".equals(p.items.dataType)) {
+                    innerExample = "\"" + p.items.defaultValue + "\"";
+                } else {
+                    innerExample = p.items.defaultValue;
+                }
+                example = "new List<" + p.items.dataType + ">({" + innerExample + "})";
+            } else {
+                example = "new List<" + p.items.dataType + ">()";
+            }
+        } else if (Boolean.TRUE.equals(p.isMap)) {
+            example = "new Dictionary<String, " + p.items.dataType + ">";
+        }
+
+        p.example = example;
     }
 
     @Override
@@ -1348,4 +1430,7 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.C_SHARP; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCppCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCppCodegen.java
index 982980afbc8..fc4e37066f8 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCppCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCppCodegen.java
@@ -25,14 +25,9 @@ import io.swagger.v3.oas.models.media.Schema;
 import io.swagger.v3.oas.models.servers.Server;
 import io.swagger.v3.oas.models.servers.ServerVariables;
 import io.swagger.v3.oas.models.servers.ServerVariable;
-import org.openapitools.codegen.CodegenServer;
-import org.openapitools.codegen.CodegenServerVariable;
+import org.openapitools.codegen.*;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
-import org.openapitools.codegen.CodegenConfig;
-import org.openapitools.codegen.CodegenModel;
-import org.openapitools.codegen.CodegenProperty;
-import org.openapitools.codegen.DefaultCodegen;
 import org.openapitools.codegen.templating.mustache.IndentedLambda;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.URLPathUtils;
@@ -439,4 +434,7 @@ abstract public class AbstractCppCodegen extends DefaultCodegen implements Codeg
         }
         return;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.C_PLUS_PLUS; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractDartCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractDartCodegen.java
index d8fda925017..7f509f60e5d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractDartCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractDartCodegen.java
@@ -772,4 +772,7 @@ public abstract class AbstractDartCodegen extends DefaultCodegen {
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.DART; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractEiffelCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractEiffelCodegen.java
index 85cc06c3c6d..26069c778bb 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractEiffelCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractEiffelCodegen.java
@@ -634,4 +634,6 @@ public abstract class AbstractEiffelCodegen extends DefaultCodegen implements Co
 
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.EIFFEL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractFSharpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractFSharpCodegen.java
index e2e9d96dc9f..b780186d65b 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractFSharpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractFSharpCodegen.java
@@ -1130,4 +1130,7 @@ public abstract class AbstractFSharpCodegen extends DefaultCodegen implements Co
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.F_SHARP; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGoCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGoCodegen.java
index 803fc6ace34..6c206de669d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGoCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGoCodegen.java
@@ -848,4 +848,7 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
     protected boolean isNumberType(String datatype) {
         return numberTypes.contains(datatype);
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.GO; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
index 35c07bef619..2933bd3302b 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
@@ -32,6 +32,7 @@ import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.BooleanUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
+import org.openapitools.codegen.languages.features.DocumentationProviderFeatures;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -48,7 +49,8 @@ import java.util.stream.Stream;
 
 import static org.openapitools.codegen.utils.StringUtils.*;
 
-public abstract class AbstractJavaCodegen extends DefaultCodegen implements CodegenConfig {
+public abstract class AbstractJavaCodegen extends DefaultCodegen implements CodegenConfig,
+    DocumentationProviderFeatures {
 
     private final Logger LOGGER = LoggerFactory.getLogger(AbstractJavaCodegen.class);
     private static final String ARTIFACT_VERSION_DEFAULT_VALUE = "1.0.0";
@@ -68,6 +70,9 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
     public static final String DISCRIMINATOR_CASE_SENSITIVE = "discriminatorCaseSensitive";
     public static final String OPENAPI_NULLABLE = "openApiNullable";
     public static final String JACKSON = "jackson";
+    public static final String TEST_OUTPUT = "testOutput";
+
+    public static final String DEFAULT_TEST_FOLDER = "${project.build.directory}/generated-test-sources/openapi";
 
     protected String dateLibrary = "threetenbp";
     protected boolean supportAsync = false;
@@ -111,6 +116,9 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
     protected List<String> additionalModelTypeAnnotations = new LinkedList<>();
     protected List<String> additionalEnumTypeAnnotations = new LinkedList<>();
     protected boolean openApiNullable = true;
+    protected String outputTestFolder = "";
+    protected DocumentationProvider documentationProvider;
+    protected AnnotationLibrary annotationLibrary;
 
     public AbstractJavaCodegen() {
         super();
@@ -147,7 +155,7 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
         setReservedWordsLowerCase(
                 Arrays.asList(
                         // special words
-                        "object",
+                        "object", "list", "file",
                         // used as internal variables, can collide with parameter names
                         "localVarPath", "localVarQueryParams", "localVarCollectionQueryParams",
                         "localVarHeaderParams", "localVarCookieParams", "localVarFormParams", "localVarPostBody",
@@ -258,13 +266,70 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
         snapShotVersionOptions.put("false", "Use a Release Version");
         snapShotVersion.setEnum(snapShotVersionOptions);
         cliOptions.add(snapShotVersion);
+        cliOptions.add(CliOption.newString(TEST_OUTPUT, "Set output folder for models and APIs tests").defaultValue(DEFAULT_TEST_FOLDER));
 
+        if (null != defaultDocumentationProvider()) {
+            CliOption documentationProviderCliOption = new CliOption(DOCUMENTATION_PROVIDER,
+                "Select the OpenAPI documentation provider.")
+                .defaultValue(defaultDocumentationProvider().toCliOptValue());
+            supportedDocumentationProvider().forEach(dp ->
+                documentationProviderCliOption.addEnum(dp.toCliOptValue(), dp.getDescription()));
+            cliOptions.add(documentationProviderCliOption);
+
+            CliOption annotationLibraryCliOption = new CliOption(ANNOTATION_LIBRARY,
+                "Select the complementary documentation annotation library.")
+                .defaultValue(defaultDocumentationProvider().getPreferredAnnotationLibrary().toCliOptValue());
+            supportedAnnotationLibraries().forEach(al ->
+                annotationLibraryCliOption.addEnum(al.toCliOptValue(), al.getDescription()));
+            cliOptions.add(annotationLibraryCliOption);
+        }
     }
 
     @Override
     public void processOpts() {
         super.processOpts();
 
+        if  (null != defaultDocumentationProvider()) {
+            documentationProvider = DocumentationProvider.ofCliOption(
+                (String)additionalProperties.getOrDefault(DOCUMENTATION_PROVIDER,
+                    defaultDocumentationProvider().toCliOptValue())
+            );
+
+            if (! supportedDocumentationProvider().contains(documentationProvider)) {
+                String msg = String.format(Locale.ROOT,
+                    "The [%s] Documentation Provider is not supported by this generator",
+                    documentationProvider.toCliOptValue());
+                throw new IllegalArgumentException(msg);
+            }
+
+            annotationLibrary = AnnotationLibrary.ofCliOption(
+                (String) additionalProperties.getOrDefault(ANNOTATION_LIBRARY,
+                    documentationProvider.getPreferredAnnotationLibrary().toCliOptValue())
+            );
+
+            if (! supportedAnnotationLibraries().contains(annotationLibrary)) {
+                String msg = String.format(Locale.ROOT, "The Annotation Library [%s] is not supported by this generator",
+                    annotationLibrary.toCliOptValue());
+                throw new IllegalArgumentException(msg);
+            }
+
+            if (! documentationProvider.supportedAnnotationLibraries().contains(annotationLibrary)) {
+                String msg = String.format(Locale.ROOT,
+                    "The [%s] documentation provider does not support [%s] as complementary annotation library",
+                    documentationProvider.toCliOptValue(), annotationLibrary.toCliOptValue());
+                throw new IllegalArgumentException(msg);
+            }
+
+            additionalProperties.put(DOCUMENTATION_PROVIDER, documentationProvider.toCliOptValue());
+            additionalProperties.put(documentationProvider.getPropertyName(), true);
+            additionalProperties.put(ANNOTATION_LIBRARY, annotationLibrary.toCliOptValue());
+            additionalProperties.put(annotationLibrary.getPropertyName(), true);
+        } else {
+            additionalProperties.put(DOCUMENTATION_PROVIDER, DocumentationProvider.NONE);
+            additionalProperties.put(ANNOTATION_LIBRARY, AnnotationLibrary.NONE);
+        }
+
+
         if (StringUtils.isEmpty(System.getenv("JAVA_POST_PROCESS_FILE"))) {
             LOGGER.info("Environment variable JAVA_POST_PROCESS_FILE not defined so the Java code may not be properly formatted. To define it, try 'export JAVA_POST_PROCESS_FILE=\"/usr/local/bin/clang-format -i\"' (Linux/Mac)");
             LOGGER.info("NOTE: To enable file post-processing, 'enablePostProcessFile' must be set to `true` (--enable-post-process-file for CLI).");
@@ -578,6 +643,10 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
         } else if (dateLibrary.equals("legacy")) {
             additionalProperties.put("legacyDates", "true");
         }
+
+        if (additionalProperties.containsKey(TEST_OUTPUT)) {
+            setOutputTestFolder(additionalProperties.get(TEST_OUTPUT).toString());
+        }
     }
 
     @Override
@@ -637,12 +706,12 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
 
     @Override
     public String apiTestFileFolder() {
-        return (outputFolder + File.separator + testFolder + File.separator + apiPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
+        return (outputTestFolder + File.separator + testFolder + File.separator + apiPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
     }
 
     @Override
     public String modelTestFileFolder() {
-        return (outputFolder + File.separator + testFolder + File.separator + modelPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
+        return (outputTestFolder + File.separator + testFolder + File.separator + modelPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
     }
 
     @Override
@@ -753,12 +822,6 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
 
     @Override
     public String toModelName(final String name) {
-        // We need to check if import-mapping has a different model for this class, so we use it
-        // instead of the auto-generated one.
-        if (importMapping.containsKey(name)) {
-            return importMapping.get(name);
-        }
-
         final String sanitizedName = sanitizeName(name);
 
         String nameWithPrefixSuffix = sanitizedName;
@@ -1759,6 +1822,45 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
         this.openApiNullable = openApiNullable;
     }
 
+    @Override
+    public void setOutputDir(String dir) {
+        super.setOutputDir(dir);
+        if (this.outputTestFolder.isEmpty()) {
+            setOutputTestFolder(dir);
+        }
+    }
+
+    public String getOutputTestFolder() {
+        if (outputTestFolder.isEmpty()) {
+            return DEFAULT_TEST_FOLDER;
+        }
+        return outputTestFolder;
+    }
+
+    public void setOutputTestFolder(String outputTestFolder) {
+        this.outputTestFolder = outputTestFolder;
+    }
+
+    @Override
+    public DocumentationProvider getDocumentationProvider() {
+        return documentationProvider;
+    }
+
+    @Override
+    public void setDocumentationProvider(DocumentationProvider documentationProvider) {
+        this.documentationProvider = documentationProvider;
+    }
+
+    @Override
+    public AnnotationLibrary getAnnotationLibrary() {
+        return annotationLibrary;
+    }
+
+    @Override
+    public void setAnnotationLibrary(AnnotationLibrary annotationLibrary) {
+        this.annotationLibrary = annotationLibrary;
+    }
+
     @Override
     public String escapeQuotationMark(String input) {
         // remove " to avoid code injection
@@ -1939,4 +2041,5 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
             addImport(codegenModel, codegenModel.additionalPropertiesType);
         }
     }
+
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java
index 0cd24435d48..e980427505e 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java
@@ -416,6 +416,10 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
             LOGGER.info("NOTE: To enable file post-processing, 'enablePostProcessFile' must be set to `true` (--enable-post-process-file for CLI).");
         }
 
+        if (additionalProperties.containsKey(MODEL_MUTABLE)) {
+            additionalProperties.put(MODEL_MUTABLE, Boolean.parseBoolean(additionalProperties.get(MODEL_MUTABLE).toString()));
+        }
+
         if (additionalProperties.containsKey(CodegenConstants.ENUM_PROPERTY_NAMING)) {
             setEnumPropertyNaming((String) additionalProperties.get(CodegenConstants.ENUM_PROPERTY_NAMING));
         }
@@ -475,6 +479,10 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
             additionalProperties.put(CodegenConstants.SERIALIZABLE_MODEL, serializableModel);
         }
 
+        if (additionalProperties.containsKey(CodegenConstants.LIBRARY)) {
+            this.setLibrary((String) additionalProperties.get(CodegenConstants.LIBRARY));
+        }
+
         if (additionalProperties.containsKey(CodegenConstants.PARCELIZE_MODELS)) {
             this.setParcelizeModels(convertPropertyToBooleanAndWriteBack(CodegenConstants.PARCELIZE_MODELS));
         } else {
@@ -1016,4 +1024,7 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
 
         return null;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.KOTLIN; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
index db9c3e42029..bfbeb59452a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java
@@ -809,4 +809,7 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
     public boolean isDataTypeString(String dataType) {
         return "string".equals(dataType);
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.PHP; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
index f07cef7e4de..1d406e00ac5 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java
@@ -700,4 +700,7 @@ public abstract class AbstractPythonCodegen extends DefaultCodegen implements Co
     protected static String dropDots(String str) {
         return str.replaceAll("\\.", "_");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.PYTHON; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractRubyCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractRubyCodegen.java
index 67fe9bc6d93..a57af7989a1 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractRubyCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractRubyCodegen.java
@@ -23,6 +23,7 @@ import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.CodegenConfig;
 import org.openapitools.codegen.DefaultCodegen;
+import org.openapitools.codegen.GeneratorLanguage;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -262,4 +263,7 @@ abstract public class AbstractRubyCodegen extends DefaultCodegen implements Code
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.RUBY; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractScalaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractScalaCodegen.java
index c3132a06f42..6a1f0d33071 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractScalaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractScalaCodegen.java
@@ -575,4 +575,6 @@ public abstract class AbstractScalaCodegen extends DefaultCodegen {
         this.invokerPackage = invokerPackage;
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.SCALA; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractTypeScriptClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractTypeScriptClientCodegen.java
index 647ecda7a04..ee69893ecf7 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractTypeScriptClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractTypeScriptClientCodegen.java
@@ -956,4 +956,7 @@ public abstract class AbstractTypeScriptClientCodegen extends DefaultCodegen imp
             return schemaType;
         }).distinct().collect(Collectors.toList());
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.TYPESCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ApexClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ApexClientCodegen.java
index 4c56b3c0eef..f8d43504d27 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ApexClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ApexClientCodegen.java
@@ -23,6 +23,7 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.CliOption;
 import org.openapitools.codegen.CodegenProperty;
+import org.openapitools.codegen.GeneratorLanguage;
 import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -326,5 +327,6 @@ public class ApexClientCodegen extends AbstractApexCodegen {
 
     }
 
-
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.APEX; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/BashClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/BashClientCodegen.java
index 5ca5fbb156b..5cc50db1415 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/BashClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/BashClientCodegen.java
@@ -828,4 +828,6 @@ public class BashClientCodegen extends DefaultCodegen implements CodegenConfig {
         return camelize(sanitizeName(operationId), true);
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.BASH; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CLibcurlClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CLibcurlClientCodegen.java
index 788639ab1d7..da9b8d200be 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CLibcurlClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CLibcurlClientCodegen.java
@@ -519,9 +519,9 @@ public class CLibcurlClientCodegen extends DefaultCodegen implements CodegenConf
         } else if (ModelUtils.isBooleanSchema(schema)) {
             example = "1";
         } else if (ModelUtils.isArraySchema(schema)) {
-            example = "list_create()";
+            example = "list_createList()";
         } else if (ModelUtils.isMapSchema(schema)) {
-            example = "list_create()";
+            example = "list_createList()";
         } else if (ModelUtils.isObjectSchema(schema)) {
             return null; // models are managed at moustache level
         } else {
@@ -920,4 +920,7 @@ public class CLibcurlClientCodegen extends DefaultCodegen implements CodegenConf
         System.out.println("# > Niklas Werner - https://paypal.me/wernerdevelopment                        #");
         System.out.println("################################################################################");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.C; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNancyFXServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNancyFXServerCodegen.java
index a99243ab359..280d26f7a16 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNancyFXServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNancyFXServerCodegen.java
@@ -23,6 +23,8 @@ import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
@@ -86,6 +88,10 @@ public class CSharpNancyFXServerCodegen extends AbstractCSharpCodegen {
                 )
         );
 
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+                .stability(Stability.DEPRECATED)
+                .build();
+
         outputFolder = "generated-code" + File.separator + getName();
         apiTemplateFiles.put("api.mustache", ".cs");
 
@@ -127,12 +133,12 @@ public class CSharpNancyFXServerCodegen extends AbstractCSharpCodegen {
 
     @Override
     public String getName() {
-        return "csharp-nancyfx";
+        return "csharp-nancyfx-deprecated";
     }
 
     @Override
     public String getHelp() {
-        return "Generates a C# NancyFX Web API server.";
+        return "Generates a C# NancyFX Web API server (deprecated).";
     }
 
     @Override
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNetCoreClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNetCoreClientCodegen.java
index 1d6a13603f6..1e882ca1819 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNetCoreClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CSharpNetCoreClientCodegen.java
@@ -40,6 +40,8 @@ import static org.openapitools.codegen.utils.StringUtils.underscore;
 
 @SuppressWarnings("Duplicates")
 public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
+    protected String apiName = "Api";
+
     // Defines the sdk option for targeted frameworks, which differs from targetFramework and targetFrameworkNuget
     protected static final String MCS_NET_VERSION_KEY = "x-mcs-sdk";
     protected static final String SUPPORTS_UWP = "supportsUWP";
@@ -50,6 +52,7 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
     // HTTP libraries
     protected static final String RESTSHARP = "restsharp";
     protected static final String HTTPCLIENT = "httpclient";
+    protected static final String GENERICHOST = "generichost";
 
     // Project Variable, determined from target framework. Not intended to be user-settable.
     protected static final String TARGET_FRAMEWORK_IDENTIFIER = "targetFrameworkIdentifier";
@@ -172,6 +175,10 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
                 "C# package name (convention: Title.Case).",
                 this.packageName);
 
+        addOption(CodegenConstants.API_NAME,
+                "Must be a valid C# class name. Only used in Generic Host library. Default: " + this.apiName, 
+                this.apiName);
+
         addOption(CodegenConstants.PACKAGE_VERSION,
                 "C# package version.",
                 this.packageVersion);
@@ -269,8 +276,8 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
                 this.optionalEmitDefaultValuesFlag);
             
         addSwitch(CodegenConstants.OPTIONAL_CONDITIONAL_SERIALIZATION,
-        CodegenConstants.OPTIONAL_CONDITIONAL_SERIALIZATION_DESC,
-        this.conditionalSerialization);        
+                CodegenConstants.OPTIONAL_CONDITIONAL_SERIALIZATION_DESC,
+                this.conditionalSerialization);
 
         addSwitch(CodegenConstants.OPTIONAL_PROJECT_FILE,
                 CodegenConstants.OPTIONAL_PROJECT_FILE_DESC,
@@ -310,8 +317,10 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
         regexModifiers.put('s', "Singleline");
         regexModifiers.put('x', "IgnorePatternWhitespace");
 
+        supportedLibraries.put(GENERICHOST, "HttpClient with Generic Host dependency injection (https://docs.microsoft.com/en-us/dotnet/core/extensions/generic-host) "
+                + "(Experimental. Subject to breaking changes without notice.)");
         supportedLibraries.put(HTTPCLIENT, "HttpClient (https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient) "
-                + "(Experimental. May subject to breaking changes without further notice.)");
+                + "(Experimental. Subject to breaking changes without notice.)");
         supportedLibraries.put(RESTSHARP, "RestSharp (https://github.com/restsharp/RestSharp)");
 
         CliOption libraryOption = new CliOption(CodegenConstants.LIBRARY, "HTTP library template (sub-template) to use");
@@ -324,7 +333,11 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
 
     @Override
     public String apiDocFileFolder() {
-        return (outputFolder + "/" + apiDocPath).replace('/', File.separatorChar);
+        if (GENERICHOST.equals(getLibrary())){
+            return (outputFolder + "/" + apiDocPath + File.separatorChar + "apis").replace('/', File.separatorChar);
+        }else{
+            return (outputFolder + "/" + apiDocPath).replace('/', File.separatorChar);
+        }
     }
 
     @Override
@@ -454,7 +467,11 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
 
     @Override
     public String modelDocFileFolder() {
-        return (outputFolder + "/" + modelDocPath).replace('/', File.separatorChar);
+        if (GENERICHOST.equals(getLibrary())){
+            return (outputFolder + "/" + modelDocPath + File.separator + "models").replace('/', File.separatorChar);
+        }else{
+            return (outputFolder + "/" + modelDocPath).replace('/', File.separatorChar);
+        }
     }
 
     @Override
@@ -559,6 +576,16 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
             setModelPropertyNaming((String) additionalProperties.get(CodegenConstants.MODEL_PROPERTY_NAMING));
         }
 
+        if (additionalProperties.containsKey((CodegenConstants.LICENSE_ID))) {
+            setLicenseId((String) additionalProperties.get(CodegenConstants.LICENSE_ID));
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.API_NAME)) {
+            setApiName((String) additionalProperties.get(CodegenConstants.API_NAME));
+        } else {
+            additionalProperties.put(CodegenConstants.API_NAME, apiName);
+        }
+
         if (isEmpty(apiPackage)) {
             setApiPackage("Api");
         }
@@ -568,7 +595,10 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
 
         clientPackage = "Client";
 
-        if (RESTSHARP.equals(getLibrary())) {
+        if (GENERICHOST.equals(getLibrary())){
+            setLibrary(GENERICHOST);
+            additionalProperties.put("useGenericHost", true);
+        } else if (RESTSHARP.equals(getLibrary())) {
             additionalProperties.put("useRestSharp", true);
             needsCustomHttpMethod = true;
         } else if (HTTPCLIENT.equals(getLibrary())) {
@@ -670,11 +700,59 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
         binRelativePath += "vendor";
         additionalProperties.put("binRelativePath", binRelativePath);
 
+        // Only write out test related files if excludeTests is unset or explicitly set to false (see start of this method)
+        if (Boolean.FALSE.equals(excludeTests.get())) {
+            modelTestTemplateFiles.put("model_test.mustache", ".cs");
+            apiTestTemplateFiles.put("api_test.mustache", ".cs");
+        }
+
         if(HTTPCLIENT.equals(getLibrary())) {
             supportingFiles.add(new SupportingFile("FileParameter.mustache", clientPackageDir, "FileParameter.cs"));
             typeMapping.put("file", "FileParameter");
+            addRestSharpSupportingFiles(clientPackageDir, packageFolder, excludeTests, testPackageFolder, testPackageName, modelPackageDir);
+            additionalProperties.put("apiDocPath", apiDocPath);
+            additionalProperties.put("modelDocPath", modelDocPath);
+        }
+        else if (GENERICHOST.equals(getLibrary())){
+            addGenericHostSupportingFiles(clientPackageDir, packageFolder, excludeTests, testPackageFolder, testPackageName, modelPackageDir);
+            additionalProperties.put("apiDocPath", apiDocPath + File.separatorChar + "apis");
+            additionalProperties.put("modelDocPath", modelDocPath + File.separatorChar + "models");
+        }
+        else{
+            addRestSharpSupportingFiles(clientPackageDir, packageFolder, excludeTests, testPackageFolder, testPackageName, modelPackageDir);
+            additionalProperties.put("apiDocPath", apiDocPath);
+            additionalProperties.put("modelDocPath", modelDocPath);
         }
 
+        addTestInstructions();
+    }
+
+    private void addTestInstructions(){
+        if (GENERICHOST.equals(getLibrary())){
+            additionalProperties.put("testInstructions", 
+                    "/* *********************************************************************************" +
+                    "\n*              Follow these manual steps to construct tests." +
+                    "\n*              This file will not be overwritten." +
+                    "\n*  *********************************************************************************" +
+                    "\n* 1. Navigate to ApiTests.Base.cs and ensure any tokens are being created correctly." +
+                    "\n*    Take care not to commit credentials to any repository." +
+                    "\n*" +
+                    "\n* 2. Mocking is coordinated by ApiTestsBase#AddApiHttpClients." +
+                    "\n*    To mock the client, use the generic AddApiHttpClients." +
+                    "\n*    To mock the server, change the client's BaseAddress." +
+                    "\n*" +
+                    "\n* 3. Locate the test you want below" +
+                    "\n*      - remove the skip property from the Fact attribute" +
+                    "\n*      - set the value of any variables if necessary" +
+                    "\n*" +
+                    "\n* 4. Run the tests and ensure they work." +
+                    "\n*" +
+                    "\n*/");
+        }
+    }
+
+    public void addRestSharpSupportingFiles(final String clientPackageDir, final String packageFolder, 
+                final AtomicReference<Boolean> excludeTests, final String testPackageFolder, final String testPackageName, final String modelPackageDir){
         supportingFiles.add(new SupportingFile("IApiAccessor.mustache", clientPackageDir, "IApiAccessor.cs"));
         supportingFiles.add(new SupportingFile("Configuration.mustache", clientPackageDir, "Configuration.cs"));
         supportingFiles.add(new SupportingFile("ApiClient.mustache", clientPackageDir, "ApiClient.cs"));
@@ -708,12 +786,6 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
         supportingFiles.add(new SupportingFile("GlobalConfiguration.mustache",
                 clientPackageDir, "GlobalConfiguration.cs"));
 
-        // Only write out test related files if excludeTests is unset or explicitly set to false (see start of this method)
-        if (Boolean.FALSE.equals(excludeTests.get())) {
-            modelTestTemplateFiles.put("model_test.mustache", ".cs");
-            apiTestTemplateFiles.put("api_test.mustache", ".cs");
-        }
-
         supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
         supportingFiles.add(new SupportingFile("git_push.sh.mustache", "", "git_push.sh"));
         supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
@@ -727,9 +799,64 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
 
         supportingFiles.add(new SupportingFile("appveyor.mustache", "", "appveyor.yml"));
         supportingFiles.add(new SupportingFile("AbstractOpenAPISchema.mustache", modelPackageDir, "AbstractOpenAPISchema.cs"));
+    }
 
-        additionalProperties.put("apiDocPath", apiDocPath);
-        additionalProperties.put("modelDocPath", modelDocPath);
+    public void addGenericHostSupportingFiles(final String clientPackageDir, final String packageFolder, 
+            final AtomicReference<Boolean> excludeTests, final String testPackageFolder, final String testPackageName, final String modelPackageDir){
+        supportingFiles.add(new SupportingFile("TokenProvider`1.mustache", clientPackageDir, "TokenProvider`1.cs"));
+        supportingFiles.add(new SupportingFile("RateLimitProvider`1.mustache", clientPackageDir, "RateLimitProvider`1.cs"));
+        supportingFiles.add(new SupportingFile("TokenContainer`1.mustache", clientPackageDir, "TokenContainer`1.cs"));
+        supportingFiles.add(new SupportingFile("TokenBase.mustache", clientPackageDir, "TokenBase.cs"));
+        supportingFiles.add(new SupportingFile("ApiException.mustache", clientPackageDir, "ApiException.cs"));
+        supportingFiles.add(new SupportingFile("ApiResponse`1.mustache", clientPackageDir, "ApiResponse`1.cs"));
+        supportingFiles.add(new SupportingFile("ClientUtils.mustache", clientPackageDir, "ClientUtils.cs"));
+        supportingFiles.add(new SupportingFile("HostConfiguration.mustache", clientPackageDir, "HostConfiguration.cs"));
+        supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+        supportingFiles.add(new SupportingFile("git_push.sh.mustache", "docs" + File.separator + "scripts", "git_push.sh"));
+        supportingFiles.add(new SupportingFile("git_push.ps1.mustache", "docs" + File.separator + "scripts", "git_push.ps1"));
+        // TODO: supportingFiles.add(new SupportingFile("generate.ps1.mustache", "docs" + File.separator + "scripts", "generate.ps1"));
+        supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
+        supportingFiles.add(new SupportingFile("Solution.mustache", "", packageName + ".sln"));
+        supportingFiles.add(new SupportingFile("netcore_project.mustache", packageFolder, packageName + ".csproj"));
+        supportingFiles.add(new SupportingFile("appveyor.mustache", "", "appveyor.yml"));
+        supportingFiles.add(new SupportingFile("AbstractOpenAPISchema.mustache", modelPackageDir, "AbstractOpenAPISchema.cs"));
+        supportingFiles.add(new SupportingFile("OpenAPIDateConverter.mustache", clientPackageDir, "OpenAPIDateConverter.cs"));
+        supportingFiles.add(new SupportingFile("ApiResponseEventArgs.mustache", clientPackageDir, "ApiResponseEventArgs.cs"));
+        supportingFiles.add(new SupportingFile("IApi.mustache", clientPackageDir, getInterfacePrefix() + "Api.cs"));
+
+        String apiTestFolder = testFolder + File.separator + testPackageName() + File.separator + apiPackage();
+
+        if (Boolean.FALSE.equals(excludeTests.get())) {
+            supportingFiles.add(new SupportingFile("netcore_testproject.mustache", testPackageFolder, testPackageName + ".csproj"));
+            supportingFiles.add(new SupportingFile("DependencyInjectionTests.mustache", apiTestFolder, "DependencyInjectionTests.cs"));
+
+            // do not overwrite test file that already exists
+            File apiTestsBaseFile = new File(apiTestFileFolder() + File.separator + "ApiTestsBase.cs");
+            if (!apiTestsBaseFile.exists()) {
+                supportingFiles.add(new SupportingFile("ApiTestsBase.mustache", apiTestFolder, "ApiTestsBase.cs"));
+            }
+        }
+
+        if (ProcessUtils.hasHttpSignatureMethods(openAPI)) {
+            supportingFiles.add(new SupportingFile("HttpSigningConfiguration.mustache", clientPackageDir, "HttpSigningConfiguration.cs"));
+            supportingFiles.add(new SupportingFile("HttpSigningToken.mustache", clientPackageDir, "HttpSigningToken.cs"));
+        }
+
+        if (ProcessUtils.hasHttpBasicMethods(openAPI)) {
+            supportingFiles.add(new SupportingFile("BasicToken.mustache", clientPackageDir, "BasicToken.cs"));
+        }
+
+        if (ProcessUtils.hasOAuthMethods(openAPI)) {
+            supportingFiles.add(new SupportingFile("OAuthToken.mustache", clientPackageDir, "OAuthToken.cs"));
+        }
+
+        if (ProcessUtils.hasHttpBearerMethods(openAPI)) {
+            supportingFiles.add(new SupportingFile("BearerToken.mustache", clientPackageDir, "BearerToken.cs"));
+        }
+
+        if (ProcessUtils.hasApiKeyMethods(openAPI)) {
+            supportingFiles.add(new SupportingFile("ApiKeyToken.mustache", clientPackageDir, "ApiKeyToken.cs"));
+        }
     }
 
     public void setNetStandard(Boolean netStandard) {
@@ -756,11 +883,24 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
         this.packageGuid = packageGuid;
     }
 
+    // TODO: this does the same as super
     @Override
     public void setPackageName(String packageName) {
         this.packageName = packageName;
     }
 
+    /** 
+     * Sets the api name. This value must be a valid class name.
+     * @param apiName The api name
+    */
+    public void setApiName(String apiName) {
+        if (!"".equals(apiName) && (Boolean.FALSE.equals(apiName.matches("^[a-zA-Z0-9_]*$")) || Boolean.FALSE.equals(apiName.matches("^[a-zA-Z].*")))){
+            throw new RuntimeException("Invalid project name " + apiName + ". May only contain alphanumeric characaters or underscore and start with a letter.");
+        }
+        this.apiName = apiName;
+    }
+
+    // TODO: this does the same as super
     @Override
     public void setPackageVersion(String packageVersion) {
         this.packageVersion = packageVersion;
@@ -978,23 +1118,23 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
 
         private final Logger LOGGER = LoggerFactory.getLogger(CSharpClientCodegen.class);
 
-        static FrameworkStrategy NETSTANDARD_1_3 = new FrameworkStrategy("netstandard1.3", ".NET Standard 1.3 compatible", "netcoreapp2.0") {
+        static FrameworkStrategy NETSTANDARD_1_3 = new FrameworkStrategy("netstandard1.3", ".NET Standard 1.3 compatible", "netcoreapp3.1") {
         };
-        static FrameworkStrategy NETSTANDARD_1_4 = new FrameworkStrategy("netstandard1.4", ".NET Standard 1.4 compatible", "netcoreapp2.0") {
+        static FrameworkStrategy NETSTANDARD_1_4 = new FrameworkStrategy("netstandard1.4", ".NET Standard 1.4 compatible", "netcoreapp3.1") {
         };
-        static FrameworkStrategy NETSTANDARD_1_5 = new FrameworkStrategy("netstandard1.5", ".NET Standard 1.5 compatible", "netcoreapp2.0") {
+        static FrameworkStrategy NETSTANDARD_1_5 = new FrameworkStrategy("netstandard1.5", ".NET Standard 1.5 compatible", "netcoreapp3.1") {
         };
-        static FrameworkStrategy NETSTANDARD_1_6 = new FrameworkStrategy("netstandard1.6", ".NET Standard 1.6 compatible", "netcoreapp2.0") {
+        static FrameworkStrategy NETSTANDARD_1_6 = new FrameworkStrategy("netstandard1.6", ".NET Standard 1.6 compatible", "netcoreapp3.1") {
         };
-        static FrameworkStrategy NETSTANDARD_2_0 = new FrameworkStrategy("netstandard2.0", ".NET Standard 2.0 compatible", "netcoreapp2.0") {
+        static FrameworkStrategy NETSTANDARD_2_0 = new FrameworkStrategy("netstandard2.0", ".NET Standard 2.0 compatible", "netcoreapp3.1") {
         };
-        static FrameworkStrategy NETSTANDARD_2_1 = new FrameworkStrategy("netstandard2.1", ".NET Standard 2.1 compatible", "netcoreapp3.0") {
+        static FrameworkStrategy NETSTANDARD_2_1 = new FrameworkStrategy("netstandard2.1", ".NET Standard 2.1 compatible", "netcoreapp3.1") {
         };
-        static FrameworkStrategy NETCOREAPP_2_0 = new FrameworkStrategy("netcoreapp2.0", ".NET Core 2.0 compatible", "netcoreapp2.0", Boolean.FALSE) {
+        static FrameworkStrategy NETCOREAPP_2_0 = new FrameworkStrategy("netcoreapp2.0", ".NET Core 2.0 compatible (deprecated)", "netcoreapp2.0", Boolean.FALSE) {
         };
-        static FrameworkStrategy NETCOREAPP_2_1 = new FrameworkStrategy("netcoreapp2.1", ".NET Core 2.1 compatible", "netcoreapp2.1", Boolean.FALSE) {
+        static FrameworkStrategy NETCOREAPP_2_1 = new FrameworkStrategy("netcoreapp2.1", ".NET Core 2.1 compatible (deprecated)", "netcoreapp2.1", Boolean.FALSE) {
         };
-        static FrameworkStrategy NETCOREAPP_3_0 = new FrameworkStrategy("netcoreapp3.0", ".NET Core 3.0 compatible", "netcoreapp3.0", Boolean.FALSE) {
+        static FrameworkStrategy NETCOREAPP_3_0 = new FrameworkStrategy("netcoreapp3.0", ".NET Core 3.0 compatible (deprecated)", "netcoreapp3.0", Boolean.FALSE) {
         };
         static FrameworkStrategy NETCOREAPP_3_1 = new FrameworkStrategy("netcoreapp3.1", ".NET Core 3.1 compatible", "netcoreapp3.1", Boolean.FALSE) {
         };
@@ -1068,6 +1208,9 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
         properties.putIfAbsent(MCS_NET_VERSION_KEY, "4.6-api");
 
         properties.put(NET_STANDARD, strategies.stream().anyMatch(p -> Boolean.TRUE.equals(p.isNetStandard)));
+        for (FrameworkStrategy frameworkStrategy : frameworkStrategies) {
+            properties.put(frameworkStrategy.name, strategies.stream().anyMatch(s -> s.name.equals(frameworkStrategy.name)));
+        }
     }
 
     /**
@@ -1105,16 +1248,16 @@ public class CSharpNetCoreClientCodegen extends AbstractCSharpCodegen {
             Map<String, Object> mo = (Map<String, Object>) _mo;
             CodegenModel cm = (CodegenModel) mo.get("model");
 
-            if (cm.oneOf != null && !cm.oneOf.isEmpty() && cm.oneOf.contains("ModelNull")) {
+            if (cm.oneOf != null && !cm.oneOf.isEmpty() && cm.oneOf.contains("Null")) {
                 // if oneOf contains "null" type
                 cm.isNullable = true;
-                cm.oneOf.remove("ModelNull");
+                cm.oneOf.remove("Null");
             }
 
-            if (cm.anyOf != null && !cm.anyOf.isEmpty() && cm.anyOf.contains("ModelNull")) {
+            if (cm.anyOf != null && !cm.anyOf.isEmpty() && cm.anyOf.contains("Null")) {
                 // if anyOf contains "null" type
                 cm.isNullable = true;
-                cm.anyOf.remove("ModelNull");
+                cm.anyOf.remove("Null");
             }
         }
 
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ClojureClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ClojureClientCodegen.java
index df4a237bd85..8527aba03f6 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ClojureClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ClojureClientCodegen.java
@@ -382,4 +382,7 @@ public class ClojureClientCodegen extends DefaultCodegen implements CodegenConfi
         // ref: https://clojurebridge.github.io/community-docs/docs/clojure/comment/
         return input.replace("(comment", "(_comment");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.CLOJURE; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ConfluenceWikiCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ConfluenceWikiCodegen.java
index edb5f81cd0d..20c3fb25373 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ConfluenceWikiCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ConfluenceWikiCodegen.java
@@ -150,4 +150,7 @@ public class ConfluenceWikiCodegen extends DefaultCodegen implements CodegenConf
         // chomp tailing newline because it breaks the tables and keep all other sign to show documentation properly
         return StringUtils.chomp(input);
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
index 2e77181d7a3..19fa27e7acf 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
@@ -595,8 +595,14 @@ public class CrystalClientCodegen extends DefaultCodegen {
 
     private String constructExampleCode(CodegenParameter codegenParameter, HashMap<String, CodegenModel> modelMaps, HashMap<String, Integer> processedModelMap) {
         if (codegenParameter.isArray) { // array
+            if (codegenParameter.items == null) {
+                return "[]";
+            }
             return "[" + constructExampleCode(codegenParameter.items, modelMaps, processedModelMap) + "]";
         } else if (codegenParameter.isMap) {
+            if (codegenParameter.items == null) {
+                return "{}";
+            }
             return "{ key: " + constructExampleCode(codegenParameter.items, modelMaps, processedModelMap) + "}";
         } else if (codegenParameter.isPrimitiveType) { // primitive type
             if (codegenParameter.isEnum) {
@@ -657,7 +663,11 @@ public class CrystalClientCodegen extends DefaultCodegen {
         if (codegenProperty.isArray) { // array
             return "[" + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "]";
         } else if (codegenProperty.isMap) {
-            return "{ key: " + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "}";
+            if (codegenProperty.items != null) {
+                return "{ key: " + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "}";
+            } else {
+                return "{ ... }";
+            }
         } else if (codegenProperty.isPrimitiveType) { // primitive type
             if (codegenProperty.isEnum) {
                 // When inline enum, set example to first allowable value
@@ -894,4 +904,7 @@ public class CrystalClientCodegen extends DefaultCodegen {
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.CRYSTAL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElixirClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElixirClientCodegen.java
index 62c9d6dcc5f..e3291df8611 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElixirClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElixirClientCodegen.java
@@ -915,4 +915,7 @@ public class ElixirClientCodegen extends DefaultCodegen implements CodegenConfig
     public void setModuleName(String moduleName) {
         this.moduleName = moduleName;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.ELIXIR; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java
index 20b2ac0c944..78241218e21 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java
@@ -465,4 +465,7 @@ public class ElmClientCodegen extends DefaultCodegen implements CodegenConfig {
             writer.write(fragment.execute().replaceAll("\\s+", ""));
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.ELM; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangClientCodegen.java
index 541456a824e..3ba5232be16 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangClientCodegen.java
@@ -479,4 +479,7 @@ public class ErlangClientCodegen extends DefaultCodegen implements CodegenConfig
     public String addRegularExpressionDelimiter(String pattern) {
         return pattern;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.ERLANG; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangProperCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangProperCodegen.java
index aec98664149..e065ca217ee 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangProperCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangProperCodegen.java
@@ -573,4 +573,7 @@ public class ErlangProperCodegen extends DefaultCodegen implements CodegenConfig
     public String addRegularExpressionDelimiter(String pattern) {
         return pattern;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.ERLANG; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java
index 0c9fc2dcc19..05e488e5354 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java
@@ -330,4 +330,7 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
     public String addRegularExpressionDelimiter(String pattern) {
         return pattern;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.ERLANG; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/FlashClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/FlashClientCodegen.java
new file mode 100644
index 00000000000..2b89404ce7d
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/FlashClientCodegen.java
@@ -0,0 +1,416 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ * Copyright 2018 SmartBear Software
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.languages;
+
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.StringUtils;
+import org.openapitools.codegen.*;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
+import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.utils.ModelUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Locale;
+
+import static org.openapitools.codegen.utils.StringUtils.camelize;
+import static org.openapitools.codegen.utils.StringUtils.underscore;
+
+public class FlashClientCodegen extends DefaultCodegen implements CodegenConfig {
+    private final Logger LOGGER = LoggerFactory.getLogger(FlashClientCodegen.class);
+
+    protected String packageName = "org.openapitools";
+    protected String packageVersion;
+
+    protected String invokerPackage = "org.openapitools";
+    protected String sourceFolder = "flash";
+
+    public FlashClientCodegen() {
+        super();
+
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata).stability(Stability.DEPRECATED).build();
+
+        modifyFeatureSet(features -> features
+                .includeDocumentationFeatures(DocumentationFeature.Readme)
+                .wireFormatFeatures(EnumSet.of(WireFormatFeature.JSON, WireFormatFeature.XML))
+                .securityFeatures(EnumSet.of(
+                        SecurityFeature.ApiKey
+                ))
+                .excludeGlobalFeatures(
+                        GlobalFeature.XMLStructureDefinitions,
+                        GlobalFeature.Callbacks,
+                        GlobalFeature.LinkObjects,
+                        GlobalFeature.ParameterStyling
+                )
+                .excludeSchemaSupportFeatures(
+                        SchemaSupportFeature.Polymorphism
+                )
+                .excludeParameterFeatures(
+                        ParameterFeature.Cookie
+                )
+                .includeClientModificationFeatures(
+                        ClientModificationFeature.BasePath
+                )
+        );
+
+        modelPackage = "org.openapitools.client.model";
+        apiPackage = "org.openapitools.client.api";
+        outputFolder = "generated-code" + File.separatorChar + "flash";
+        modelTemplateFiles.put("model.mustache", ".as");
+        modelTemplateFiles.put("modelList.mustache", "List.as");
+        apiTemplateFiles.put("api.mustache", ".as");
+        embeddedTemplateDir = templateDir = "flash";
+
+        languageSpecificPrimitives.clear();
+        languageSpecificPrimitives.add("Number");
+        languageSpecificPrimitives.add("Boolean");
+        languageSpecificPrimitives.add("String");
+        languageSpecificPrimitives.add("Date");
+        languageSpecificPrimitives.add("Array");
+        languageSpecificPrimitives.add("Dictionary");
+
+        typeMapping.clear();
+        typeMapping.put("integer", "Number");
+        typeMapping.put("float", "Number");
+        typeMapping.put("long", "Number");
+        typeMapping.put("double", "Number");
+        typeMapping.put("array", "Array");
+        typeMapping.put("map", "Dictionary");
+        typeMapping.put("boolean", "Boolean");
+        typeMapping.put("string", "String");
+        typeMapping.put("date", "Date");
+        typeMapping.put("DateTime", "Date");
+        typeMapping.put("object", "Object");
+        typeMapping.put("file", "File");
+        typeMapping.put("UUID", "String");
+        typeMapping.put("URI", "String");
+        typeMapping.put("binary", "File");
+
+        importMapping = new HashMap<String, String>();
+        importMapping.put("File", "flash.filesystem.File");
+
+        // from
+        setReservedWordsLowerCase(Arrays.asList("add", "for", "lt", "tellTarget", "and",
+                "function", "ne", "this", "break", "ge", "new", "typeof", "continue", "gt", "not",
+                "var", "delete", "if", "on", "void", "do", "ifFrameLoaded", "onClipEvent", "while",
+                "else", "in", "or", "with", "eq", "le", "return"));
+
+        cliOptions.clear();
+        cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "flash package name (convention:" +
+                " package.name)").defaultValue("org.openapitools"));
+        cliOptions.add(new CliOption(CodegenConstants.PACKAGE_VERSION, "flash package version")
+                .defaultValue("1.0.0"));
+        cliOptions.add(new CliOption(CodegenConstants.INVOKER_PACKAGE, CodegenConstants.INVOKER_PACKAGE_DESC));
+        cliOptions.add(new CliOption(CodegenConstants.SOURCE_FOLDER, "source folder for generated " +
+                "code. e.g. flash"));
+
+    }
+
+    @Override
+    public void processOpts() {
+        super.processOpts();
+
+        if (additionalProperties.containsKey(CodegenConstants.INVOKER_PACKAGE)) {
+            this.setInvokerPackage((String) additionalProperties.get(CodegenConstants.INVOKER_PACKAGE));
+        } else {
+            //not set, use default to be passed to template
+            additionalProperties.put(CodegenConstants.INVOKER_PACKAGE, invokerPackage);
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.SOURCE_FOLDER)) {
+            this.setSourceFolder((String) additionalProperties.get(CodegenConstants.SOURCE_FOLDER));
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
+            setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
+            apiPackage = packageName + ".client.api";
+            modelPackage = packageName + ".client.model";
+        } else {
+            setPackageName("org.openapitools");
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_VERSION)) {
+            setPackageVersion((String) additionalProperties.get(CodegenConstants.PACKAGE_VERSION));
+        } else {
+            setPackageVersion("1.0.0");
+        }
+
+        additionalProperties.put(CodegenConstants.PACKAGE_NAME, packageName);
+        additionalProperties.put(CodegenConstants.PACKAGE_VERSION, packageVersion);
+
+        //modelPackage = invokerPackage + File.separatorChar + "client" + File.separatorChar + "model";
+        //apiPackage = invokerPackage + File.separatorChar + "client" + File.separatorChar + "api";
+
+        final String invokerFolder = (sourceFolder + File.separator + "src" + File.separator + invokerPackage + File.separator).replace(".", File.separator).replace('.', File.separatorChar);
+
+        supportingFiles.add(new SupportingFile("ApiInvoker.as", invokerFolder + "common", "ApiInvoker.as"));
+        supportingFiles.add(new SupportingFile("ApiUrlHelper.as", invokerFolder + "common", "ApiUrlHelper.as"));
+        supportingFiles.add(new SupportingFile("ApiUserCredentials.as", invokerFolder + "common", "ApiUserCredentials.as"));
+        supportingFiles.add(new SupportingFile("ListWrapper.as", invokerFolder + "common", "ListWrapper.as"));
+        supportingFiles.add(new SupportingFile("OpenApi.as", invokerFolder + "common", "OpenApi.as"));
+        supportingFiles.add(new SupportingFile("XMLWriter.as", invokerFolder + "common", "XMLWriter.as"));
+        supportingFiles.add(new SupportingFile("ApiError.as", invokerFolder + "exception", "ApiError.as"));
+        supportingFiles.add(new SupportingFile("ApiErrorCodes.as", invokerFolder + "exception", "ApiErrorCodes.as"));
+        supportingFiles.add(new SupportingFile("ApiClientEvent.as", invokerFolder + "event", "ApiClientEvent.as"));
+        supportingFiles.add(new SupportingFile("Response.as", invokerFolder + "event", "Response.as"));
+        supportingFiles.add(new SupportingFile("build.properties", sourceFolder, "build.properties"));
+        supportingFiles.add(new SupportingFile("build.xml", sourceFolder, "build.xml"));
+        supportingFiles.add(new SupportingFile("README.txt", sourceFolder, "README.txt"));
+        //supportingFiles.add(new SupportingFile("AirExecutorApp-app.xml", sourceFolder + File.separatorChar
+        //        + "bin", "AirExecutorApp-app.xml"));
+        supportingFiles.add(new SupportingFile("ASAXB-0.1.1.swc", sourceFolder + File.separatorChar
+                + "lib", "ASAXB-0.1.1.swc"));
+        supportingFiles.add(new SupportingFile("as3corelib.swc", sourceFolder + File.separatorChar
+                + "lib", "as3corelib.swc"));
+        supportingFiles.add(new SupportingFile("flexunit-4.1.0_RC2-28-flex_3.5.0.12683.swc", sourceFolder
+                + File.separator + "lib" + File.separator + "ext", "flexunit-4.1.0_RC2-28-flex_3.5.0.12683.swc"));
+        supportingFiles.add(new SupportingFile("flexunit-aircilistener-4.1.0_RC2-28-3.5.0.12683.swc", sourceFolder
+                + File.separator + "lib" + File.separator + "ext", "flexunit-aircilistener-4.1.0_RC2-28-3.5.0.12683.swc"));
+        supportingFiles.add(new SupportingFile("flexunit-cilistener-4.1.0_RC2-28-3.5.0.12683.swc", sourceFolder
+                + File.separator + "lib" + File.separator + "ext", "flexunit-cilistener-4.1.0_RC2-28-3.5.0.12683.swc"));
+        supportingFiles.add(new SupportingFile("flexunit-core-flex-4.0.0.2-sdk3.5.0.12683.swc", sourceFolder
+                + File.separator + "lib" + File.separator + "ext", "flexunit-core-flex-4.0.0.2-sdk3.5.0.12683.swc"));
+        supportingFiles.add(new SupportingFile("git_push.sh.mustache", "", "git_push.sh"));
+        supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
+    }
+
+    private static String dropDots(String str) {
+        return str.replaceAll("\\.", "_");
+    }
+
+    @Override
+    public CodegenType getTag() {
+        return CodegenType.CLIENT;
+    }
+
+    @Override
+    public String getName() {
+        return "flash-deprecated";
+    }
+
+    @Override
+    public String getHelp() {
+        return "Generates a Flash (ActionScript) client library (beta). IMPORTANT: this generator has been deprecated in v5.x";
+    }
+
+    @Override
+    public String escapeReservedWord(String name) {
+        if (this.reservedWordsMappings().containsKey(name)) {
+            return this.reservedWordsMappings().get(name);
+        }
+        return "_" + name;
+    }
+
+    @Override
+    public String apiFileFolder() {
+        return outputFolder + File.separatorChar + sourceFolder + File.separatorChar + ("src/"
+                + apiPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
+    }
+
+    @Override
+    public String modelFileFolder() {
+        return outputFolder + File.separatorChar + sourceFolder + File.separatorChar + ("src/"
+                + modelPackage().replace('.', File.separatorChar)).replace('/', File.separatorChar);
+    }
+
+    @Override
+    public String getTypeDeclaration(Schema p) {
+        if (ModelUtils.isArraySchema(p) || ModelUtils.isMapSchema(p)) {
+            return getSchemaType(p);
+        }
+        return super.getTypeDeclaration(p);
+    }
+
+    @Override
+    public String getSchemaType(Schema p) {
+        String schemaType = super.getSchemaType(p);
+        String type = null;
+        if (typeMapping.containsKey(schemaType)) {
+            type = typeMapping.get(schemaType);
+            if (languageSpecificPrimitives.contains(type)) {
+                return type;
+            }
+        } else {
+            type = toModelName(schemaType);
+        }
+        return type;
+    }
+
+    @Override
+    public String toDefaultValue(Schema p) {
+        if (ModelUtils.isBooleanSchema(p)) {
+            return "false";
+        } else if (ModelUtils.isDateSchema(p)) {
+            return "null";
+        } else if (ModelUtils.isDateTimeSchema(p)) {
+            return "null";
+        } else if (ModelUtils.isNumberSchema(p)) {
+            if (p.getDefault() != null) {
+                return p.getDefault().toString();
+            }
+            return "0.0";
+        } else if (ModelUtils.isIntegerSchema(p)) {
+            if (p.getDefault() != null) {
+                return p.getDefault().toString();
+            }
+            return "0";
+        } else if (ModelUtils.isMapSchema(p)) {
+            return "new Dictionary()";
+        } else if (ModelUtils.isArraySchema(p)) {
+            return "new Array()";
+        } else if (ModelUtils.isStringSchema(p)) {
+            return "null";
+        } else {
+            return "NaN";
+        }
+    }
+
+    @Override
+    public String toVarName(String name) {
+        // replace - with _ e.g. created-at => created_at
+        name = name.replaceAll("-", "_"); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
+
+        // if it's all upper case, convert to lower case
+        if (name.matches("^[A-Z_]*$")) {
+            name = name.toLowerCase(Locale.ROOT);
+        }
+
+        // underscore the variable name
+        // petId => pet_id
+        name = camelize(dropDots(name), true);
+
+        // for reserved word or word starting with number, append _
+        if (isReservedWord(name) || name.matches("^\\d.*")) {
+            name = escapeReservedWord(name);
+        }
+
+        return name;
+    }
+
+    @Override
+    public String toParamName(String name) {
+        // should be the same as variable name
+        return toVarName(name);
+    }
+
+    @Override
+    public String toModelName(String name) {
+        if (!StringUtils.isEmpty(modelNamePrefix)) {
+            name = modelNamePrefix + "_" + name;
+        }
+
+        if (!StringUtils.isEmpty(modelNameSuffix)) {
+            name = name + "_" + modelNameSuffix;
+        }
+
+        name = sanitizeName(name);
+
+        // model name cannot use reserved keyword, e.g. return
+        if (isReservedWord(name)) {
+            LOGGER.warn("{} (reserved word) cannot be used as model name. Renamed to {}", name, camelize("model_" + name));
+            name = "model_" + name; // e.g. return => ModelReturn (after camelize)
+        }
+
+        // camelize the model name
+        // phone_number => PhoneNumber
+        return camelize(name);
+    }
+
+    @Override
+    public String toModelFilename(String name) {
+        // leverage toModelName
+        return dropDots(toModelName(name));
+    }
+
+    @Override
+    public String toApiFilename(String name) {
+        // replace - with _ e.g. created-at => created_at
+        name = name.replaceAll("-", "_"); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
+
+        // e.g. PhoneNumberApi.rb => phone_number_api.rb
+        return camelize(name) + "Api";
+    }
+
+    @Override
+    public String toApiName(String name) {
+        if (name.length() == 0) {
+            return "DefaultApi";
+        }
+        // e.g. phone_number_api => PhoneNumberApi
+        return camelize(name) + "Api";
+    }
+
+    @Override
+    public String toApiVarName(String name) {
+        if (name.length() == 0) {
+            return "DefaultApi";
+        }
+        return camelize(name) + "Api";
+    }
+
+    @Override
+    public String toOperationId(String operationId) {
+        // throw exception if method name is empty
+        if (StringUtils.isEmpty(operationId)) {
+            throw new RuntimeException("Empty method name (operationId) not allowed");
+        }
+
+        // method name cannot use reserved keyword, e.g. return
+        if (isReservedWord(operationId)) {
+            LOGGER.warn("{} (reserved word) cannot be used as method name. Renamed to {}", operationId, underscore(sanitizeName("call_" + operationId)));
+            operationId = "call_" + operationId;
+        }
+
+        return underscore(operationId);
+    }
+
+    public void setPackageName(String packageName) {
+        this.packageName = packageName;
+    }
+
+    public void setPackageVersion(String packageVersion) {
+        this.packageVersion = packageVersion;
+    }
+
+    public void setInvokerPackage(String invokerPackage) {
+        this.invokerPackage = invokerPackage;
+    }
+
+    public void setSourceFolder(String sourceFolder) {
+        this.sourceFolder = sourceFolder;
+    }
+
+    @Override
+    public String escapeQuotationMark(String input) {
+        // remove " to avoid code injection
+        return input.replace("\"", "");
+    }
+
+    @Override
+    public String escapeUnsafeCharacters(String input) {
+        return input.replace("*/", "*_/").replace("/*", "/_*");
+    }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.FLASH; }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoClientCodegen.java
index 5f556a45671..3902e0b07cc 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoClientCodegen.java
@@ -555,6 +555,9 @@ public class GoClientCodegen extends AbstractGoCodegen {
             if (modelMaps.containsKey(dataType)) {
                 prefix = "map[string][]" + goImportAlias + "." + dataType;
             }
+            if (codegenProperty.items == null) {
+                return prefix + "{ ... }";
+            }
             return prefix + "{\"key\": " + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "}";
         } else if (codegenProperty.isPrimitiveType) { // primitive type
             if (codegenProperty.isString) {
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLNodeJSExpressServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLNodeJSExpressServerCodegen.java
index edfe46026a2..fc68c05827a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLNodeJSExpressServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLNodeJSExpressServerCodegen.java
@@ -166,4 +166,7 @@ public class GraphQLNodeJSExpressServerCodegen extends AbstractGraphQLCodegen im
             return StringUtils.capitalize(enumName) + "Enum";
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVASCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLSchemaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLSchemaCodegen.java
index 9835ee9d0e5..5215b9d3bed 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLSchemaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GraphQLSchemaCodegen.java
@@ -16,10 +16,7 @@
 
 package org.openapitools.codegen.languages;
 
-import org.openapitools.codegen.CliOption;
-import org.openapitools.codegen.CodegenConfig;
-import org.openapitools.codegen.CodegenConstants;
-import org.openapitools.codegen.CodegenType;
+import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -102,4 +99,7 @@ public class GraphQLSchemaCodegen extends AbstractGraphQLCodegen implements Code
         //supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"))
         //supportingFiles.add(new SupportingFile(".travis.yml", "", ".travis.yml"));
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.GRAPH_QL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GroovyClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GroovyClientCodegen.java
index 77844538e47..c12ce839375 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GroovyClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GroovyClientCodegen.java
@@ -24,10 +24,7 @@ import java.util.EnumSet;
 import java.util.List;
 import java.util.Map;
 
-import org.openapitools.codegen.CodegenConstants;
-import org.openapitools.codegen.CodegenOperation;
-import org.openapitools.codegen.CodegenType;
-import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.ClientModificationFeature;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.meta.features.GlobalFeature;
@@ -157,4 +154,7 @@ public class GroovyClientCodegen extends AbstractJavaCodegen {
     public String escapeUnsafeCharacters(String input) {
         return input.replace("*/", "*_/").replace("/*", "/_*");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.GROOVY; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellHttpClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellHttpClientCodegen.java
index 645069903b8..3f7845bfa7c 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellHttpClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellHttpClientCodegen.java
@@ -1473,4 +1473,7 @@ public class HaskellHttpClientCodegen extends DefaultCodegen implements CodegenC
     static boolean ContainsJsonMimeType(String mime) {
             return mime != null && CONTAINS_JSON_MIME_PATTERN.matcher(mime).matches();
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.HASKELL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellServantCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellServantCodegen.java
index 9b44c0b2d68..477df471507 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellServantCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellServantCodegen.java
@@ -701,4 +701,7 @@ public class HaskellServantCodegen extends DefaultCodegen implements CodegenConf
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.HASKELL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellYesodServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellYesodServerCodegen.java
index 736b9d599b1..d30093ce7c9 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellYesodServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellYesodServerCodegen.java
@@ -630,4 +630,7 @@ public class HaskellYesodServerCodegen extends DefaultCodegen implements Codegen
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.HASKELL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCamelServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCamelServerCodegen.java
new file mode 100644
index 00000000000..40d17458e1f
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCamelServerCodegen.java
@@ -0,0 +1,208 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.languages;
+
+import io.swagger.v3.oas.models.Operation;
+import org.openapitools.codegen.CliOption;
+import org.openapitools.codegen.CodegenOperation;
+import org.openapitools.codegen.CodegenType;
+import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.languages.features.BeanValidationFeatures;
+import org.openapitools.codegen.languages.features.OptionalFeatures;
+import org.openapitools.codegen.languages.features.PerformBeanValidationFeatures;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class JavaCamelServerCodegen extends SpringCodegen implements BeanValidationFeatures, PerformBeanValidationFeatures, OptionalFeatures {
+    private static final String APPLICATION_JSON = "application/json";
+    private static final String APPLICATION_XML = "application/xml";
+
+    public static final String PROJECT_NAME = "projectName";
+    public static final String CAMEL_REST_COMPONENT = "camelRestComponent";
+    public static final String CAMEL_REST_BINDING_MODE = "camelRestBindingMode";
+    public static final String CAMEL_REST_CLIENT_REQUEST_VALIDATION = "camelRestClientRequestValidation";
+    public static final String CAMEL_USE_DEFAULT_VALIDATION_ERROR_PROCESSOR = "camelUseDefaulValidationtErrorProcessor";
+    public static final String CAMEL_VALIDATION_ERROR_PROCESSOR = "camelValidationErrorProcessor";
+    public static final String CAMEL_SECURITY_DEFINITIONS = "camelSecurityDefinitions";
+    public static final String CAMEL_DATAFORMAT_PROPERTIES = "camelDataformatProperties";
+
+    private String camelRestComponent = "servlet";
+    private String camelRestBindingMode = "auto";
+    private boolean camelRestClientRequestValidation = false;
+    private boolean camelUseDefaulValidationtErrorProcessor = true;
+    private String camelValidationErrorProcessor = "validationErrorProcessor";
+    private boolean camelSecurityDefinitions = true;
+    private String camelDataformatProperties = "";
+
+    private final Logger LOGGER = LoggerFactory.getLogger(JavaCamelServerCodegen.class);
+
+    public CodegenType getTag() {
+        return CodegenType.SERVER;
+    }
+
+    public String getName() {
+        return "java-camel";
+    }
+
+    public String getHelp() {
+        return "Generates a Java Camel server (beta).";
+    }
+
+    public JavaCamelServerCodegen() {
+        super();
+        templateDir = "java-camel-server";
+        addCliOptions();
+        artifactId = "openapi-camel";
+        super.library = "";
+    }
+
+    @Override
+    public void processOpts() {
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+                .stability(Stability.BETA)
+                .build();
+
+        if (!additionalProperties.containsKey(DATE_LIBRARY)) {
+            additionalProperties.put(DATE_LIBRARY, "legacy");
+        }
+        super.processOpts();
+        super.apiTemplateFiles.remove("apiController.mustache");
+        LOGGER.info("***** Java Apache Camel Server Generator *****");
+        supportingFiles.clear();
+        manageAdditionalProperties();
+
+        Map<String, String> dataFormatProperties = new HashMap<>();
+        if (!"off".equals(camelRestBindingMode)) {
+            Arrays.stream(camelDataformatProperties.split(",")).forEach(property -> {
+                String[] dataFormatProperty = property.split("=");
+                if (dataFormatProperty.length == 2) {
+                    dataFormatProperties.put(dataFormatProperty[0].trim(), dataFormatProperty[1].trim());
+                }
+            });
+        }
+        additionalProperties.put(CAMEL_DATAFORMAT_PROPERTIES, dataFormatProperties.entrySet());
+
+        supportingFiles.add(new SupportingFile("restConfiguration.mustache",
+                (sourceFolder + File.separator + basePackage).replace(".", java.io.File.separator),
+                "RestConfiguration.java"));
+        if (performBeanValidation) {
+            apiTemplateFiles.put("validation.mustache", "Validator.java");
+            if (camelUseDefaulValidationtErrorProcessor) {
+                supportingFiles.add(new SupportingFile("errorProcessor.mustache",
+                        (sourceFolder + File.separator + basePackage).replace(".", java.io.File.separator),
+                        "ValidationErrorProcessor.java"));
+            }
+        }
+        if (SPRING_BOOT.equals(library)) {
+            supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+            supportingFiles.add(new SupportingFile("openapi2SpringBoot.mustache",
+                    (sourceFolder + File.separator + basePackage).replace(".", java.io.File.separator),
+                    "OpenAPI2SpringBoot.java"));
+
+            if (!interfaceOnly) {
+                apiTemplateFiles.put("routesImpl.mustache", "RoutesImpl.java");
+            }
+
+            supportingFiles.add(new SupportingFile("application.mustache",
+                    ("src.main.resources").replace(".", java.io.File.separator), "application.properties"));
+            supportingFiles.add(new SupportingFile("pom.mustache", "", "pom.xml"));
+            supportingFiles.add(new SupportingFile("RFC3339DateFormat.mustache",
+                    (sourceFolder + File.separator + basePackage).replace(".", java.io.File.separator),
+                    "RFC3339DateFormat.java"));
+            apiTestTemplateFiles.put("test.mustache", ".java");
+        }
+    }
+
+    @Override
+    public void addOperationToGroup(String tag, String resourcePath, Operation operation, CodegenOperation co, Map<String, List<CodegenOperation>> operations) {
+        boolean bindingModeOff = false;
+        if (co.hasProduces) {
+            for (Map<String, String> produces : co.produces) {
+                String mediaType = produces.get("mediaType");
+                if (!APPLICATION_JSON.equals(mediaType) && !APPLICATION_XML.equals(mediaType)) {
+                    bindingModeOff = true;
+                }
+                if (APPLICATION_JSON.equals(mediaType)) {
+                    produces.put("isJson", "true");
+                }
+                if (APPLICATION_XML.equals(mediaType)) {
+                    produces.put("isXml", "true");
+                }
+            }
+        }
+        if (co.hasConsumes) {
+            for (Map<String, String> consumes : co.consumes) {
+                String mediaType = consumes.get("mediaType");
+                if (!APPLICATION_JSON.equals(mediaType) && !APPLICATION_XML.equals(mediaType)) {
+                    bindingModeOff = true;
+                }
+                if (APPLICATION_JSON.equals(mediaType)) {
+                    consumes.put("isJson", "true");
+                }
+                if (APPLICATION_XML.equals(mediaType)) {
+                    consumes.put("isXml", "true");
+                }
+            }
+        }
+        co.vendorExtensions.put(CAMEL_REST_BINDING_MODE, bindingModeOff);
+        super.addOperationToGroup(tag, resourcePath, operation, co, operations);
+    }
+
+    private void addCliOptions() {
+        cliOptions.add(new CliOption(CAMEL_REST_COMPONENT, "name of the Camel component to use as the REST consumer").defaultValue(camelRestComponent));
+        cliOptions.add(new CliOption(CAMEL_REST_BINDING_MODE, "binding mode to be used by the REST consumer").defaultValue(camelRestBindingMode));
+        cliOptions.add(CliOption.newBoolean(CAMEL_REST_CLIENT_REQUEST_VALIDATION, "enable validation of the client request to check whether the Content-Type and Accept headers from the client is supported by the Rest-DSL configuration", camelRestClientRequestValidation));
+        cliOptions.add(CliOption.newBoolean(CAMEL_USE_DEFAULT_VALIDATION_ERROR_PROCESSOR, "generate default validation error processor", camelUseDefaulValidationtErrorProcessor));
+        cliOptions.add(new CliOption(CAMEL_VALIDATION_ERROR_PROCESSOR, "validation error processor bean name").defaultValue(camelValidationErrorProcessor));
+        cliOptions.add(CliOption.newBoolean(CAMEL_SECURITY_DEFINITIONS, "generate camel security definitions", camelSecurityDefinitions));
+        cliOptions.add(new CliOption(CAMEL_DATAFORMAT_PROPERTIES, "list of dataformat properties separated by comma (propertyName1=propertyValue2,...").defaultValue(camelDataformatProperties));
+    }
+
+    private void manageAdditionalProperties() {
+        camelRestComponent = manageAdditionalProperty(CAMEL_REST_COMPONENT, camelRestComponent);
+        camelRestBindingMode = manageAdditionalProperty(CAMEL_REST_BINDING_MODE, camelRestBindingMode);
+        camelRestClientRequestValidation = manageAdditionalProperty(CAMEL_REST_CLIENT_REQUEST_VALIDATION, camelRestClientRequestValidation);
+        camelUseDefaulValidationtErrorProcessor = manageAdditionalProperty(CAMEL_USE_DEFAULT_VALIDATION_ERROR_PROCESSOR, camelUseDefaulValidationtErrorProcessor);
+        camelValidationErrorProcessor = manageAdditionalProperty(CAMEL_VALIDATION_ERROR_PROCESSOR, camelValidationErrorProcessor);
+        camelSecurityDefinitions = manageAdditionalProperty(CAMEL_SECURITY_DEFINITIONS, camelSecurityDefinitions);
+        camelDataformatProperties = manageAdditionalProperty(CAMEL_DATAFORMAT_PROPERTIES, camelDataformatProperties);
+    }
+
+    private <T> T manageAdditionalProperty(String propertyName, T defaultValue) {
+        if (additionalProperties.containsKey(propertyName)) {
+            Object propertyValue = additionalProperties.get(propertyName);
+            if (defaultValue instanceof Boolean && !(propertyValue instanceof Boolean)) {
+                return (T) manageBooleanAdditionalProperty((String) propertyValue);
+            }
+            return (T) additionalProperties.get(propertyName);
+        }
+        additionalProperties.put(propertyName, defaultValue);
+        return defaultValue;
+    }
+
+    private Boolean manageBooleanAdditionalProperty(String propertyValue) {
+        return Boolean.parseBoolean(propertyValue);
+    }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
index 2d4a3214b03..8476e2d88b7 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java
@@ -49,12 +49,10 @@ public class JavaClientCodegen extends AbstractJavaCodegen
 
     private final Logger LOGGER = LoggerFactory.getLogger(JavaClientCodegen.class);
 
-    public static final String USE_RX_JAVA = "useRxJava";
     public static final String USE_RX_JAVA2 = "useRxJava2";
     public static final String USE_RX_JAVA3 = "useRxJava3";
     public static final String DO_NOT_USE_RX = "doNotUseRx";
     public static final String USE_PLAY_WS = "usePlayWS";
-    public static final String PLAY_VERSION = "playVersion";
     public static final String ASYNC_NATIVE = "asyncNative";
     public static final String CONFIG_KEY = "configKey";
     public static final String PARCELABLE_MODEL = "parcelableModel";
@@ -69,10 +67,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
     public static final String ERROR_OBJECT_TYPE= "errorObjectType";
     public static final String ERROR_OBJECT_SUBTYPE= "errorObjectSubtype";
 
-    public static final String PLAY_24 = "play24";
-    public static final String PLAY_25 = "play25";
-    public static final String PLAY_26 = "play26";
-
     public static final String MICROPROFILE_DEFAULT = "default";
     public static final String MICROPROFILE_KUMULUZEE = "kumuluzee";
 
@@ -104,7 +98,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
     // (mustache does not allow for boolean operators so we need this extra field)
     protected boolean doNotUseRx = true;
     protected boolean usePlayWS = false;
-    protected String playVersion = PLAY_26;
     protected String microprofileFramework = MICROPROFILE_DEFAULT;
     protected String configKey = null;
 
@@ -149,12 +142,10 @@ public class JavaClientCodegen extends AbstractJavaCodegen
 
         modelTestTemplateFiles.put("model_test.mustache", ".java");
 
-        cliOptions.add(CliOption.newBoolean(USE_RX_JAVA, "Whether to use the RxJava adapter with the retrofit2 library. IMPORTANT: this option has been deprecated and will be removed in the 5.x release."));
-        cliOptions.add(CliOption.newBoolean(USE_RX_JAVA2, "Whether to use the RxJava2 adapter with the retrofit2 library."));
-        cliOptions.add(CliOption.newBoolean(USE_RX_JAVA3, "Whether to use the RxJava3 adapter with the retrofit2 library."));
+        cliOptions.add(CliOption.newBoolean(USE_RX_JAVA2, "Whether to use the RxJava2 adapter with the retrofit2 library. IMPORTANT: This option has been deprecated."));
+        cliOptions.add(CliOption.newBoolean(USE_RX_JAVA3, "Whether to use the RxJava3 adapter with the retrofit2 library. IMPORTANT: This option has been deprecated."));
         cliOptions.add(CliOption.newBoolean(PARCELABLE_MODEL, "Whether to generate models for Android that implement Parcelable with the okhttp-gson library."));
         cliOptions.add(CliOption.newBoolean(USE_PLAY_WS, "Use Play! Async HTTP client (Play WS API)"));
-        cliOptions.add(CliOption.newString(PLAY_VERSION, "Version of Play! Framework (possible values \"play24\" (Deprecated), \"play25\" (Deprecated), \"play26\" (Default))"));
         cliOptions.add(CliOption.newBoolean(USE_BEANVALIDATION, "Use BeanValidation API annotations"));
         cliOptions.add(CliOption.newBoolean(PERFORM_BEANVALIDATION, "Perform BeanValidation"));
         cliOptions.add(CliOption.newBoolean(USE_GZIP_FEATURE, "Send gzip-encoded requests"));
@@ -241,23 +232,14 @@ public class JavaClientCodegen extends AbstractJavaCodegen
         super.processOpts();
 
         // RxJava
-        if (additionalProperties.containsKey(USE_RX_JAVA) && additionalProperties.containsKey(USE_RX_JAVA2) && additionalProperties.containsKey(USE_RX_JAVA3)) {
-            LOGGER.warn("You specified all RxJava versions 1, 2 and 3 but they are mutually exclusive. Defaulting to v3.");
+        if (additionalProperties.containsKey(USE_RX_JAVA2) && additionalProperties.containsKey(USE_RX_JAVA3)) {
+            LOGGER.warn("You specified all RxJava versions 2 and 3 but they are mutually exclusive. Defaulting to v3.");
             this.setUseRxJava3(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA3).toString()));
         } else {
-            if (additionalProperties.containsKey(USE_RX_JAVA) && additionalProperties.containsKey(USE_RX_JAVA2)) {
-                LOGGER.warn("You specified both RxJava versions 1 and 2 but they are mutually exclusive. Defaulting to v2.");
-                this.setUseRxJava2(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA2).toString()));
-            } else if (additionalProperties.containsKey(USE_RX_JAVA) && additionalProperties.containsKey(USE_RX_JAVA3)) {
-                LOGGER.warn("You specified both RxJava versions 1 and 3 but they are mutually exclusive. Defaulting to v3.");
-                this.setUseRxJava3(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA3).toString()));
-            } else if (additionalProperties.containsKey(USE_RX_JAVA2) && additionalProperties.containsKey(USE_RX_JAVA3)) {
+            if (additionalProperties.containsKey(USE_RX_JAVA2) && additionalProperties.containsKey(USE_RX_JAVA3)) {
                 LOGGER.warn("You specified both RxJava versions 2 and 3 but they are mutually exclusive. Defaulting to v3.");
                 this.setUseRxJava3(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA3).toString()));
             } else {
-                if (additionalProperties.containsKey(USE_RX_JAVA)) {
-                    this.setUseRxJava(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA).toString()));
-                }
                 if (additionalProperties.containsKey(USE_RX_JAVA2)) {
                     this.setUseRxJava2(Boolean.parseBoolean(additionalProperties.get(USE_RX_JAVA2).toString()));
                 }
@@ -277,11 +259,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
         }
         additionalProperties.put(USE_PLAY_WS, usePlayWS);
 
-        if (additionalProperties.containsKey(PLAY_VERSION)) {
-            this.setPlayVersion(additionalProperties.get(PLAY_VERSION).toString());
-        }
-        additionalProperties.put(PLAY_VERSION, playVersion);
-
         // Microprofile framework
         if (additionalProperties.containsKey(MICROPROFILE_FRAMEWORK)) {
             if (!MICROPROFILE_KUMULUZEE.equals(microprofileFramework)) {
@@ -423,6 +400,10 @@ public class JavaClientCodegen extends AbstractJavaCodegen
             //Templates to decode response headers
             supportingFiles.add(new SupportingFile("model/ApiResponse.mustache", modelsFolder, "ApiResponse.java"));
             supportingFiles.add(new SupportingFile("ApiResponseDecoder.mustache", invokerFolder, "ApiResponseDecoder.java"));
+
+            // TODO remove "file" from reserved word list as feign client doesn't support using `baseName`
+            // as the parameter name yet
+            reservedWords.remove("file");
         }
 
         if (!(FEIGN.equals(getLibrary()) || RESTTEMPLATE.equals(getLibrary()) || RETROFIT_2.equals(getLibrary()) || GOOGLE_API_CLIENT.equals(getLibrary()) || REST_ASSURED.equals(getLibrary()) || WEBCLIENT.equals(getLibrary()) || MICROPROFILE.equals(getLibrary()))) {
@@ -556,40 +537,13 @@ public class JavaClientCodegen extends AbstractJavaCodegen
             }
 
             apiTemplateFiles.remove("api.mustache");
+            apiTemplateFiles.put("play26/api.mustache", ".java");
 
-            if (PLAY_24.equals(playVersion)) {
-                LOGGER.warn("`play24` option has been deprecated and will be removed in the 5.x release. Please use `play26` instead.");
-                additionalProperties.put(PLAY_24, true);
-                apiTemplateFiles.put("play24/api.mustache", ".java");
-
-                supportingFiles.add(new SupportingFile("play24/ApiClient.mustache", invokerFolder, "ApiClient.java"));
-                supportingFiles.add(new SupportingFile("play24/Play24CallFactory.mustache", invokerFolder, "Play24CallFactory.java"));
-                supportingFiles.add(new SupportingFile("play24/Play24CallAdapterFactory.mustache", invokerFolder,
-                        "Play24CallAdapterFactory.java"));
-            }
-
-            if (PLAY_25.equals(playVersion)) {
-                LOGGER.warn("`play25` option has been deprecated and will be removed in the 5.x release. Please use `play26` instead.");
-                additionalProperties.put(PLAY_25, true);
-                apiTemplateFiles.put("play25/api.mustache", ".java");
-
-                supportingFiles.add(new SupportingFile("play25/ApiClient.mustache", invokerFolder, "ApiClient.java"));
-                supportingFiles.add(new SupportingFile("play25/Play25CallFactory.mustache", invokerFolder, "Play25CallFactory.java"));
-                supportingFiles.add(new SupportingFile("play25/Play25CallAdapterFactory.mustache", invokerFolder,
-                        "Play25CallAdapterFactory.java"));
-                setJava8ModeAndAdditionalProperties(true);
-            }
-
-            if (PLAY_26.equals(playVersion)) {
-                additionalProperties.put(PLAY_26, true);
-                apiTemplateFiles.put("play26/api.mustache", ".java");
-
-                supportingFiles.add(new SupportingFile("play26/ApiClient.mustache", invokerFolder, "ApiClient.java"));
-                supportingFiles.add(new SupportingFile("play26/Play26CallFactory.mustache", invokerFolder, "Play26CallFactory.java"));
-                supportingFiles.add(new SupportingFile("play26/Play26CallAdapterFactory.mustache", invokerFolder,
-                        "Play26CallAdapterFactory.java"));
-                setJava8ModeAndAdditionalProperties(true);
-            }
+            supportingFiles.add(new SupportingFile("play26/ApiClient.mustache", invokerFolder, "ApiClient.java"));
+            supportingFiles.add(new SupportingFile("play26/Play26CallFactory.mustache", invokerFolder, "Play26CallFactory.java"));
+            supportingFiles.add(new SupportingFile("play26/Play26CallAdapterFactory.mustache", invokerFolder,
+                    "Play26CallAdapterFactory.java"));
+            setJava8ModeAndAdditionalProperties(true);
 
             supportingFiles.add(new SupportingFile("play-common/auth/ApiKeyAuth.mustache", authFolder, "ApiKeyAuth.java"));
             supportingFiles.add(new SupportingFile("auth/Authentication.mustache", authFolder, "Authentication.java"));
@@ -985,10 +939,6 @@ public class JavaClientCodegen extends AbstractJavaCodegen
         this.usePlayWS = usePlayWS;
     }
 
-    public void setPlayVersion(String playVersion) {
-        this.playVersion = playVersion;
-    }
-
     public void setAsyncNative(boolean asyncNative) {
         this.asyncNative = asyncNative;
     }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java
index 8b50933247a..23c82cc2edd 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaJAXRSSpecServerCodegen.java
@@ -213,11 +213,12 @@ public class JavaJAXRSSpecServerCodegen extends AbstractJavaJAXRSServerCodegen {
             supportingFiles.add(new SupportingFile("ibm-web-ext.xml.mustache", "src/main/webapp/WEB-INF", "ibm-web-ext.xml")
                     .doNotOverwrite());
         } else if(HELIDON_LIBRARY.equals(library)) {
+            additionalProperties.computeIfAbsent("helidonVersion", key -> "2.4.1");
             supportingFiles.add(new SupportingFile("logging.properties.mustache", "src/main/resources", "logging.properties")
                     .doNotOverwrite());
             supportingFiles.add(new SupportingFile("microprofile-config.properties.mustache", "src/main/resources/META-INF", "microprofile-config.properties")
                     .doNotOverwrite());
-            supportingFiles.add(new SupportingFile("beans.xml.mustache", "src/main/webapp/META-INF", "beans.xml")
+            supportingFiles.add(new SupportingFile("beans.xml.mustache", "src/main/resources/META-INF", "beans.xml")
                     .doNotOverwrite());
         } else if(KUMULUZEE_LIBRARY.equals(library)) {
             supportingFiles.add(new SupportingFile("config.yaml.mustache", "src/main/resources", "config.yaml"));
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java
new file mode 100644
index 00000000000..b8b8506e8f4
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java
@@ -0,0 +1,511 @@
+package org.openapitools.codegen.languages;
+
+import org.apache.commons.lang3.StringUtils;
+import org.openapitools.codegen.*;
+import org.openapitools.codegen.languages.features.BeanValidationFeatures;
+import org.openapitools.codegen.meta.features.DocumentationFeature;
+import org.openapitools.codegen.meta.features.SecurityFeature;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+import static org.openapitools.codegen.CodegenConstants.INVOKER_PACKAGE;
+
+public abstract class JavaMicronautAbstractCodegen extends AbstractJavaCodegen implements BeanValidationFeatures {
+    public static final String OPT_TITLE = "title";
+    public static final String OPT_BUILD = "build";
+    public static final String OPT_BUILD_GRADLE = "gradle";
+    public static final String OPT_BUILD_MAVEN = "maven";
+    public static final String OPT_BUILD_ALL = "all";
+    public static final String OPT_TEST = "test";
+    public static final String OPT_TEST_JUNIT = "junit";
+    public static final String OPT_TEST_SPOCK = "spock";
+    public static final String OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR = "requiredPropertiesInConstructor";
+    public static final String OPT_MICRONAUT_VERSION = "micronautVersion";
+    public static final String OPT_USE_AUTH = "useAuth";
+
+    protected String title;
+    protected boolean useBeanValidation;
+    protected String buildTool;
+    protected String testTool;
+    protected boolean requiredPropertiesInConstructor = true;
+    protected String micronautVersion = "3.2.6";
+
+    public static final String CONTENT_TYPE_APPLICATION_FORM_URLENCODED = "application/x-www-form-urlencoded";
+    public static final String CONTENT_TYPE_APPLICATION_JSON = "application/json";
+    public static final String CONTENT_TYPE_MULTIPART_FORM_DATA = "multipart/form-data";
+    public static final String CONTENT_TYPE_ANY = "*/*";
+
+    public JavaMicronautAbstractCodegen() {
+        super();
+
+        // Set all the fields
+        useBeanValidation = true;
+        buildTool = OPT_BUILD_ALL;
+        testTool = OPT_TEST_JUNIT;
+        outputFolder = "generated-code/java-micronaut-client";
+        templateDir = "java-micronaut/client";
+        apiPackage = "org.openapitools.api";
+        modelPackage = "org.openapitools.model";
+        invokerPackage = "org.openapitools";
+        artifactId = "openapi-micronaut";
+        embeddedTemplateDir = templateDir = "java-micronaut";
+        apiDocPath = "docs/apis";
+        modelDocPath = "docs/models";
+
+        // Set implemented features for user information
+        modifyFeatureSet(features -> features
+                .includeDocumentationFeatures(
+                        DocumentationFeature.Readme
+                )
+                .securityFeatures(EnumSet.of(
+                        SecurityFeature.ApiKey,
+                        SecurityFeature.BasicAuth,
+                        SecurityFeature.OAuth2_Implicit,
+                        SecurityFeature.OAuth2_AuthorizationCode,
+                        SecurityFeature.OAuth2_ClientCredentials,
+                        SecurityFeature.OAuth2_Password,
+                        SecurityFeature.OpenIDConnect
+                ))
+        );
+
+        // Set additional properties
+        additionalProperties.put("jackson", "true");
+        additionalProperties.put("openbrace", "{");
+        additionalProperties.put("closebrace", "}");
+
+        // Set client options that will be presented to user
+        updateOption(INVOKER_PACKAGE, this.getInvokerPackage());
+        updateOption(CodegenConstants.ARTIFACT_ID, this.getArtifactId());
+        updateOption(CodegenConstants.API_PACKAGE, apiPackage);
+        updateOption(CodegenConstants.MODEL_PACKAGE, modelPackage);
+
+        cliOptions.add(new CliOption(OPT_TITLE, "Client service name").defaultValue(title));
+        cliOptions.add(new CliOption(OPT_MICRONAUT_VERSION, "Micronaut version, only >=3.0.0 versions are supported").defaultValue(micronautVersion));
+        cliOptions.add(CliOption.newBoolean(USE_BEANVALIDATION, "Use BeanValidation API annotations", useBeanValidation));
+        cliOptions.add(CliOption.newBoolean(OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR, "Allow only to create models with all the required properties provided in constructor", requiredPropertiesInConstructor));
+
+        CliOption buildToolOption = new CliOption(OPT_BUILD, "Specify for which build tool to generate files").defaultValue(buildTool);
+        buildToolOption.setEnum(new HashMap<String, String>() {{
+            put(OPT_BUILD_GRADLE, "Gradle configuration is generated for the project");
+            put(OPT_BUILD_MAVEN, "Maven configuration is generated for the project");
+            put(OPT_BUILD_ALL, "Both Gradle and Maven configurations are generated");
+        }});
+        cliOptions.add(buildToolOption);
+
+        CliOption testToolOption = new CliOption(OPT_TEST, "Specify which test tool to generate files for").defaultValue(testTool);
+        testToolOption.setEnum(new HashMap<String, String>() {{
+            put(OPT_TEST_JUNIT, "Use JUnit as test tool");
+            put(OPT_TEST_SPOCK, "Use Spock as test tool");
+        }});
+        cliOptions.add(testToolOption);
+
+        // Remove the date library option
+        cliOptions.stream().filter(o -> o.getOpt().equals("dateLibrary")).findFirst()
+                .ifPresent(v -> cliOptions.remove(v));
+
+        // Add reserved words
+        String[] reservedWordsArray = {
+                "client", "format", "queryvalue", "queryparam", "pathvariable", "header", "cookie",
+                "authorization", "body", "application"
+        };
+        reservedWords.addAll(Arrays.asList(reservedWordsArray));
+    }
+
+    @Override
+    public void processOpts() {
+        super.processOpts();
+
+        // Get properties
+        if (additionalProperties.containsKey(OPT_TITLE)) {
+            this.title = (String) additionalProperties.get(OPT_TITLE);
+        }
+
+        if (additionalProperties.containsKey(INVOKER_PACKAGE)) {
+            invokerPackage = (String) additionalProperties.get(INVOKER_PACKAGE);
+        } else {
+            additionalProperties.put(INVOKER_PACKAGE, invokerPackage);
+        }
+
+        if (additionalProperties.containsKey(OPT_MICRONAUT_VERSION)) {
+            micronautVersion = (String) additionalProperties.get(OPT_MICRONAUT_VERSION);
+        } else {
+            additionalProperties.put(OPT_MICRONAUT_VERSION, micronautVersion);
+        }
+
+        // Get boolean properties
+        if (additionalProperties.containsKey(USE_BEANVALIDATION)) {
+            this.setUseBeanValidation(convertPropertyToBoolean(USE_BEANVALIDATION));
+        }
+        writePropertyBack(USE_BEANVALIDATION, useBeanValidation);
+
+        if (additionalProperties.containsKey(OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR)) {
+            this.requiredPropertiesInConstructor = convertPropertyToBoolean(OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR);
+        }
+        writePropertyBack(OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR, requiredPropertiesInConstructor);
+
+        // Get enum properties
+        if (additionalProperties.containsKey(OPT_BUILD)) {
+            switch ((String) additionalProperties.get(OPT_BUILD)) {
+                case OPT_BUILD_GRADLE:
+                case OPT_BUILD_MAVEN:
+                case OPT_BUILD_ALL:
+                    this.buildTool = (String) additionalProperties.get(OPT_BUILD);
+                    break;
+                default:
+                    throw new RuntimeException("Build tool \"" + additionalProperties.get(OPT_BUILD) + "\" is not supported or misspelled.");
+            }
+        }
+        additionalProperties.put(OPT_BUILD, buildTool);
+
+        if (additionalProperties.containsKey(OPT_TEST)) {
+            switch ((String) additionalProperties.get(OPT_TEST)) {
+                case OPT_TEST_JUNIT:
+                case OPT_TEST_SPOCK:
+                    this.testTool = (String) additionalProperties.get(OPT_TEST);
+                    break;
+                default:
+                    throw new RuntimeException("Test tool \"" + additionalProperties.get(OPT_TEST) + "\" is not supported or misspelled.");
+            }
+        }
+        additionalProperties.put(OPT_TEST, testTool);
+        if (testTool.equals(OPT_TEST_JUNIT)) {
+            additionalProperties.put("isTestJunit", true);
+        } else if (testTool.equals(OPT_TEST_SPOCK)) {
+            additionalProperties.put("isTestSpock", true);
+        }
+
+        // Add all the supporting files
+        String resourceFolder = projectFolder + "/resources";
+        supportingFiles.add(new SupportingFile("common/configuration/application.yml.mustache", resourceFolder, "application.yml").doNotOverwrite());
+        supportingFiles.add(new SupportingFile("common/configuration/logback.xml.mustache", resourceFolder, "logback.xml").doNotOverwrite());
+
+        if (buildTool.equals(OPT_BUILD_GRADLE) || buildTool.equals(OPT_BUILD_ALL)) {
+            // Gradle files
+            supportingFiles.add(new SupportingFile("common/configuration/gradle/build.gradle.mustache", "", "build.gradle").doNotOverwrite());
+            supportingFiles.add(new SupportingFile("common/configuration/gradle/settings.gradle.mustache", "", "settings.gradle").doNotOverwrite());
+            supportingFiles.add(new SupportingFile("common/configuration/gradle/gradle.properties.mustache", "", "gradle.properties").doNotOverwrite());
+
+            // Gradlew files
+            final String gradleWrapperFolder = "gradle/wrapper";
+            supportingFiles.add(new SupportingFile("common/configuration/gradlew/gradlew.mustache", "", "gradlew"));
+            supportingFiles.add(new SupportingFile("common/configuration/gradlew/gradlew.bat.mustache", "", "gradlew.bat"));
+            supportingFiles.add(new SupportingFile("common/configuration/gradlew/gradle-wrapper.properties.mustache", gradleWrapperFolder, "gradle-wrapper.properties"));
+            supportingFiles.add(new SupportingFile("common/configuration/gradlew/gradle-wrapper.jar", gradleWrapperFolder, "gradle-wrapper.jar"));
+        }
+
+        if (buildTool.equals(OPT_BUILD_MAVEN) || buildTool.equals(OPT_BUILD_ALL)) {
+            // Maven files
+            supportingFiles.add(new SupportingFile("common/configuration/pom.xml.mustache", "", "pom.xml").doNotOverwrite());
+
+            // Maven wrapper files
+            supportingFiles.add(new SupportingFile("common/configuration/mavenw/mvnw.mustache", "", "mvnw"));
+            supportingFiles.add(new SupportingFile("common/configuration/mavenw/mvnw.bat.mustache", "", "mvnw.bat"));
+            supportingFiles.add(new SupportingFile("common/configuration/mavenw/MavenWrapperDownloader.java.mustache", ".mvn/wrapper", "MavenWrapperDownloader.java"));
+            supportingFiles.add(new SupportingFile("common/configuration/mavenw/maven-wrapper.jar.mustache", ".mvn/wrapper", "maven-wrapper.jar"));
+            supportingFiles.add(new SupportingFile("common/configuration/mavenw/maven-wrapper.properties.mustache", ".mvn/wrapper", "maren-wrapper.properties"));
+        }
+
+        // Git files
+        supportingFiles.add(new SupportingFile("common/configuration/git/gitignore.mustache", "", ".gitignore").doNotOverwrite());
+
+        // Use the default java LocalDate
+        typeMapping.put("date", "LocalDate");
+        typeMapping.put("DateTime", "LocalDateTime");
+        importMapping.put("LocalDate", "java.time.LocalDate");
+        importMapping.put("LocalDateTime", "java.time.LocalDateTime");
+
+        // Add documentation files
+        modelDocTemplateFiles.clear();
+        modelDocTemplateFiles.put("common/doc/model_doc.mustache", ".md");
+
+        // Add model files
+        modelTemplateFiles.clear();
+        modelTemplateFiles.put("common/model/model.mustache", ".java");
+
+        // Add test files
+        modelTestTemplateFiles.clear();
+        if (testTool.equals(OPT_TEST_JUNIT)) {
+            modelTestTemplateFiles.put("common/test/model_test.mustache", ".java");
+        } else if (testTool.equals(OPT_TEST_SPOCK)) {
+            modelTestTemplateFiles.put("common/test/model_test.groovy.mustache", ".groovy");
+        }
+
+        // Set properties for documentation
+        final String invokerFolder = (sourceFolder + '/' + invokerPackage).replace(".", "/");
+        final String apiFolder = (sourceFolder + '/' + apiPackage()).replace('.', '/');
+        final String modelFolder = (sourceFolder + '/' + modelPackage()).replace('.', '/');
+        additionalProperties.put("invokerFolder", invokerFolder);
+        additionalProperties.put("resourceFolder", resourceFolder);
+        additionalProperties.put("apiFolder", apiFolder);
+        additionalProperties.put("modelFolder", modelFolder);
+    }
+
+    @Override
+    public String apiTestFileFolder() {
+        if (testTool.equals(OPT_TEST_SPOCK)) {
+            return getOutputDir() + "/src/test/groovy/" + apiPackage().replaceAll("\\.", "/");
+        }
+        return getOutputDir() + "/src/test/java/" + apiPackage().replaceAll("\\.", "/");
+    }
+
+    @Override
+    public String modelTestFileFolder() {
+        if (testTool.equals(OPT_TEST_SPOCK)) {
+            return getOutputDir() + "/src/test/groovy/" + modelPackage().replaceAll("\\.", "/");
+        }
+        return getOutputDir() + "/src/test/java/" + modelPackage().replaceAll("\\.", "/");
+    }
+
+    @Override
+    public String toApiTestFilename(String name) {
+        if (testTool.equals(OPT_TEST_SPOCK)) {
+            return toApiName(name) + "Spec";
+        }
+        return toApiName(name) + "Test";
+    }
+
+    @Override
+    public String toModelTestFilename(String name) {
+        if (testTool.equals(OPT_TEST_SPOCK)) {
+            return toModelName(name) + "Spec";
+        }
+        return toModelName(name) + "Test";
+    }
+
+    @Override
+    public void setUseBeanValidation(boolean useBeanValidation) {
+        this.useBeanValidation = useBeanValidation;
+    }
+
+    @Override
+    public String toApiVarName(String name) {
+        String apiVarName = super.toApiVarName(name);
+        if (reservedWords.contains(apiVarName)) {
+            apiVarName = escapeReservedWord(apiVarName);
+        }
+        return apiVarName;
+    }
+
+    public boolean isUseBeanValidation() {
+        return useBeanValidation;
+    }
+
+    @Override
+    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<Object> allModels) {
+        objs = super.postProcessOperationsWithModels(objs, allModels);
+
+        Map<String, CodegenModel> models = allModels.stream()
+                .map(v -> ((Map<String, CodegenModel>) v).get("model"))
+                .collect(Collectors.toMap(v -> v.classname, v -> v));
+        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+
+        for (CodegenOperation op : operationList) {
+            // Set whether body is supported in request
+            op.vendorExtensions.put("methodAllowsBody",
+                    op.httpMethod.equals("PUT") || op.httpMethod.equals("POST") || op.httpMethod.equals("PATCH"));
+
+            // Set response example
+            if (op.returnType != null) {
+                String example;
+                String groovyExample;
+                if (models.containsKey(op.returnType)) {
+                    CodegenModel m = models.get(op.returnType);
+                    List<Object> allowableValues = null;
+                    if (m.allowableValues != null && m.allowableValues.containsKey("values")) {
+                        allowableValues = (List<Object>) m.allowableValues.get("values");
+                    }
+                    example = getExampleValue(m.defaultValue, null, m.classname, true,
+                            allowableValues, null, null, m.requiredVars, false);
+                    groovyExample = getExampleValue(m.defaultValue, null, m.classname, true,
+                            allowableValues, null, null, m.requiredVars, true);
+                } else {
+                    example = getExampleValue(null, null, op.returnType, false, null,
+                            op.returnBaseType, null, null, false);
+                    groovyExample = getExampleValue(null, null, op.returnType, false, null,
+                            op.returnBaseType, null, null, true);
+                }
+                op.vendorExtensions.put("example", example);
+                op.vendorExtensions.put("groovyExample", groovyExample);
+            }
+
+            // Remove the "*/*" contentType from operations as it is ambiguous
+            if (CONTENT_TYPE_ANY.equals(op.vendorExtensions.get("x-contentType"))) {
+                op.vendorExtensions.put("x-contentType", CONTENT_TYPE_APPLICATION_JSON);
+            }
+            op.consumes = op.consumes == null ? null : op.consumes.stream()
+                    .filter(contentType -> !CONTENT_TYPE_ANY.equals(contentType.get("mediaType")))
+                    .collect(Collectors.toList());
+            op.produces = op.produces == null ? null : op.produces.stream()
+                    .filter(contentType -> !CONTENT_TYPE_ANY.equals(contentType.get("mediaType")))
+                    .collect(Collectors.toList());
+
+            // Force form parameters are only set if the content-type is according
+            // formParams correspond to urlencoded type
+            // bodyParams correspond to multipart body
+            if (CONTENT_TYPE_APPLICATION_FORM_URLENCODED.equals(op.vendorExtensions.get("x-contentType"))) {
+                op.formParams.addAll(op.bodyParams);
+                op.bodyParams.forEach(p -> {
+                    p.isBodyParam = false;
+                    p.isFormParam = true;
+                });
+                op.bodyParams.clear();
+            } else if (CONTENT_TYPE_MULTIPART_FORM_DATA.equals(op.vendorExtensions.get("x-contentType"))) {
+                op.bodyParams.addAll(op.formParams);
+                op.formParams.forEach(p -> {
+                    p.isBodyParam = true;
+                    p.isFormParam = false;
+                });
+                op.formParams.clear();
+            }
+        }
+
+        return objs;
+    }
+
+    @Override
+    public Map<String, Object> postProcessAllModels(Map<String, Object> objs) {
+        objs = super.postProcessAllModels(objs);
+
+        for (String modelName: objs.keySet()) {
+            CodegenModel model = ((Map<String, List<Map<String, CodegenModel>>>) objs.get(modelName))
+                    .get("models").get(0).get("model");
+            if (model.getParentModel() != null) {
+                model.vendorExtensions.put("requiredParentVars", model.getParentModel().requiredVars);
+            }
+
+            List<CodegenProperty> requiredVars = model.vars.stream().filter(v -> v.required).collect(Collectors.toList());
+            model.vendorExtensions.put("requiredVars", requiredVars);
+        }
+
+        return objs;
+    }
+
+    @Override
+    public void setParameterExampleValue(CodegenParameter p) {
+        p.vendorExtensions.put("groovyExample", getParameterExampleValue(p, true));
+        p.example = getParameterExampleValue(p, false);
+    }
+
+    protected String getParameterExampleValue(CodegenParameter p, boolean groovy) {
+        List<Object> allowableValues = p.allowableValues == null ? null : (List<Object>) p.allowableValues.get("values");
+
+        return getExampleValue(p.defaultValue, p.example, p.dataType, p.isModel, allowableValues,
+                p.items == null ? null : p.items.dataType,
+                p.items == null ? null : p.items.defaultValue,
+                p.requiredVars, groovy);
+    }
+
+    protected String getPropertyExampleValue(CodegenProperty p, boolean groovy) {
+        List<Object> allowableValues = p.allowableValues == null ? null : (List<Object>) p.allowableValues.get("values");
+
+        return getExampleValue(p.defaultValue, p.example, p.dataType, p.isModel, allowableValues,
+                p.items == null ? null : p.items.dataType,
+                p.items == null ? null : p.items.defaultValue,
+                null, groovy);
+    }
+
+    public String getExampleValue(
+            String defaultValue, String example, String dataType, Boolean isModel, List<Object> allowableValues,
+            String itemsType, String itemsExample, List<CodegenProperty> requiredVars, boolean groovy
+    ) {
+        example = defaultValue != null ? defaultValue : example;
+        String containerType = dataType == null ? null : dataType.split("<")[0];
+
+        if ("String".equals(dataType)) {
+            if (groovy) {
+                example = example != null ? "'" + escapeTextGroovy(example) + "'" : "'example'";
+            } else {
+                example = example != null ? "\"" + escapeText(example) + "\"" : "\"example\"";
+            }
+        } else if ("Integer".equals(dataType) || "Short".equals(dataType)) {
+            example = example != null ? example : "56";
+        } else if ("Long".equals(dataType)) {
+            example = StringUtils.appendIfMissingIgnoreCase(example != null ? example : "56", "L");
+        } else if ("Float".equals(dataType)) {
+            example = StringUtils.appendIfMissingIgnoreCase(example != null ? example : "3.4", "F");
+        } else if ("Double".equals(dataType)) {
+            example = StringUtils.appendIfMissingIgnoreCase(example != null ? example : "3.4", "D");
+        } else if ("Boolean".equals(dataType)) {
+            example = example != null ? example : "false";
+        } else if ("File".equals(dataType)) {
+            example = null;
+        } else if ("LocalDate".equals(dataType)) {
+            example = "LocalDate.of(2001, 2, 3)";
+        } else if ("LocalDateTime".equals(dataType)) {
+            example = "LocalDateTime.of(2001, 2, 3, 4, 5)";
+        } else if ("BigDecimal".equals(dataType)) {
+            example = "new BigDecimal(78)";
+        } else if (allowableValues != null && !allowableValues.isEmpty()) {
+            // This is an enum
+            Object value = example;
+            if (value == null || !allowableValues.contains(value)) {
+                value = allowableValues.get(0);
+            }
+            example = dataType + ".fromValue(\"" + value + "\")";
+        } else if ((isModel != null && isModel) || (isModel == null && !languageSpecificPrimitives.contains(dataType))) {
+            if (requiredVars == null) {
+                example = null;
+            } else {
+                if (requiredPropertiesInConstructor) {
+                    StringBuilder builder = new StringBuilder();
+                    builder.append("new ").append(dataType).append("(");
+                    for (int i = 0; i < requiredVars.size(); ++i) {
+                        if (i != 0) {
+                            builder.append(", ");
+                        }
+                        builder.append(getPropertyExampleValue(requiredVars.get(i), groovy));
+                    }
+                    builder.append(")");
+                    example = builder.toString();
+                } else {
+                    example = "new " + dataType + "()";
+                }
+            }
+        }
+
+        if ("List".equals(containerType)) {
+            String innerExample;
+            if ("String".equals(itemsType)) {
+                itemsExample = itemsExample != null ? itemsExample : "example";
+                if (groovy) {
+                    innerExample = "'" + escapeTextGroovy(itemsExample) + "'";
+                } else {
+                    innerExample = "\"" + escapeText(itemsExample) + "\"";
+                }
+            } else {
+                innerExample = itemsExample != null ? itemsExample : "";
+            }
+
+            if (groovy) {
+                example = "[" + innerExample + "]";
+            } else {
+                example = "Arrays.asList(" + innerExample + ")";
+            }
+        } else if ("Set".equals(containerType)) {
+            if (groovy) {
+                example = "[].asSet()";
+            } else {
+                example = "new HashSet<>()";
+            }
+        } else if ("Map".equals(containerType)) {
+            if (groovy) {
+                example = "[:]";
+            } else {
+                example = "new HashMap<>()";
+            }
+        } else if (example == null) {
+            example = "null";
+        }
+
+        return example;
+    }
+
+    public String escapeTextGroovy(String text) {
+        if (text == null) {
+            return null;
+        }
+        return escapeText(text).replaceAll("'", "\\'");
+    }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautClientCodegen.java
index f3d398c8e76..997ecf31723 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautClientCodegen.java
@@ -1,127 +1,36 @@
 package org.openapitools.codegen.languages;
 
 import org.openapitools.codegen.CliOption;
-import org.openapitools.codegen.CodegenConstants;
 import org.openapitools.codegen.CodegenType;
 import org.openapitools.codegen.SupportingFile;
-import org.openapitools.codegen.languages.features.BeanValidationFeatures;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
-import org.openapitools.codegen.meta.features.DocumentationFeature;
-import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.util.Arrays;
-import java.util.EnumSet;
-import java.util.HashMap;
-import java.util.Map;
 
-import static org.openapitools.codegen.CodegenConstants.INVOKER_PACKAGE;
-
-
-public class JavaMicronautClientCodegen extends AbstractJavaCodegen implements BeanValidationFeatures {
+public class JavaMicronautClientCodegen extends JavaMicronautAbstractCodegen {
 
     private final Logger LOGGER = LoggerFactory.getLogger(JavaClientCodegen.class);
 
-    public static final String OPT_TITLE = "title";
-    public static final String OPT_CONFIG_PACKAGE = "configPackage";
     public static final String OPT_CONFIGURE_AUTH = "configureAuth";
-    public static final String OPT_BUILD = "build";
-    public static final String OPT_BUILD_GRADLE = "gradle";
-    public static final String OPT_BUILD_MAVEN = "maven";
-    public static final String OPT_BUILD_ALL = "all";
-    public static final String OPT_TEST = "test";
-    public static final String OPT_TEST_JUNIT = "junit";
-    public static final String OPT_TEST_SPOCK = "spock";
 
     public static final String NAME = "java-micronaut-client";
 
-    protected String title;
-    protected String configPackage;
-    protected boolean useBeanValidation;
     protected boolean configureAuthorization;
-    protected String buildTool;
-    protected String testTool;
 
     public JavaMicronautClientCodegen() {
         super();
 
         title = "OpenAPI Micronaut Client";
-        invokerPackage = "org.openapitools";
-        configPackage = "org.openapitools.configuration";
-        useBeanValidation = true;
         configureAuthorization = false;
-        buildTool = OPT_BUILD_ALL;
-        testTool = OPT_TEST_JUNIT;
-
-        modifyFeatureSet(features -> features
-                .includeDocumentationFeatures(
-                        DocumentationFeature.Readme
-                )
-                .securityFeatures(EnumSet.of(
-                        SecurityFeature.ApiKey,
-                        SecurityFeature.BasicAuth,
-                        SecurityFeature.OAuth2_Implicit,
-                        SecurityFeature.OAuth2_AuthorizationCode,
-                        SecurityFeature.OAuth2_ClientCredentials,
-                        SecurityFeature.OAuth2_Password,
-                        SecurityFeature.OpenIDConnect
-                ))
-        );
 
         generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
                 .stability(Stability.BETA)
                 .build();
+        additionalProperties.put("client", "true");
 
-        outputFolder = "generated-code/java-micronaut-client";
-        embeddedTemplateDir = templateDir = "java-micronaut-client";
-        apiPackage = "org.openapitools.api";
-        modelPackage = "org.openapitools.model";
-        invokerPackage = "org.openapitools";
-        artifactId = "openapi-micronaut";
-
-        updateOption(INVOKER_PACKAGE, this.getInvokerPackage());
-        updateOption(CodegenConstants.ARTIFACT_ID, this.getArtifactId());
-        updateOption(CodegenConstants.API_PACKAGE, apiPackage);
-        updateOption(CodegenConstants.MODEL_PACKAGE, modelPackage);
-
-        apiTestTemplateFiles.clear();
-
-        additionalProperties.put("jackson", "true");
-        additionalProperties.put("openbrace", "{");
-        additionalProperties.put("closebrace", "}");
-
-        cliOptions.add(new CliOption(OPT_TITLE, "Client service name").defaultValue(title));
-        cliOptions.add(new CliOption(OPT_CONFIG_PACKAGE, "Configuration package for generated code").defaultValue(configPackage));
         cliOptions.add(CliOption.newBoolean(OPT_CONFIGURE_AUTH, "Configure all the authorization methods as specified in the file", configureAuthorization));
-        cliOptions.add(CliOption.newBoolean(USE_BEANVALIDATION, "Use BeanValidation API annotations", useBeanValidation));
-
-        CliOption buildToolOption = new CliOption(OPT_BUILD, "Specify for which build tool to generate files").defaultValue(buildTool);
-        Map buildToolOptionMap = new HashMap();
-        buildToolOptionMap.put(OPT_BUILD_GRADLE, "Gradle configuration is generated for the project");
-        buildToolOptionMap.put(OPT_BUILD_MAVEN, "Maven configuration is generated for the project");
-        buildToolOptionMap.put(OPT_BUILD_ALL, "Both Gradle and Maven configurations are generated");
-        buildToolOption.setEnum(buildToolOptionMap);
-        cliOptions.add(buildToolOption);
-
-        CliOption testToolOption = new CliOption(OPT_TEST, "Specify which test tool to generate files for").defaultValue(testTool);
-        Map testToolOptionMap = new HashMap();
-        testToolOptionMap.put(OPT_TEST_JUNIT, "Use JUnit as test tool");
-        testToolOptionMap.put(OPT_TEST_SPOCK, "Use Spock as test tool");
-        testToolOption.setEnum(testToolOptionMap);
-        cliOptions.add(testToolOption);
-
-        // Remove the date library option
-        cliOptions.stream().filter(o -> o.getOpt().equals("dateLibrary")).findFirst()
-                .ifPresent(v -> cliOptions.remove(v));
-
-        // Add reserved words
-        String[] reservedWordsArray = {
-                "client", "format", "queryvalue", "queryparam", "pathvariable", "header", "cookie",
-                "authorization", "body", "application"
-        };
-        reservedWords.addAll(Arrays.asList(reservedWordsArray));
     }
 
     @Override
@@ -139,202 +48,53 @@ public class JavaMicronautClientCodegen extends AbstractJavaCodegen implements B
         return "Generates a Java Micronaut Client.";
     }
 
+    public boolean isConfigureAuthorization() {
+        return configureAuthorization;
+    }
+
     @Override
     public void processOpts() {
         super.processOpts();
 
-        // Get properties
-        if (additionalProperties.containsKey(OPT_TITLE)) {
-            this.title = (String) additionalProperties.get(OPT_TITLE);
-        }
-
-        if (additionalProperties.containsKey(OPT_CONFIG_PACKAGE)) {
-            configPackage = (String) additionalProperties.get(OPT_CONFIG_PACKAGE);
-        } else {
-            additionalProperties.put(OPT_CONFIG_PACKAGE, configPackage);
-        }
-
-        if (additionalProperties.containsKey(INVOKER_PACKAGE)) {
-            invokerPackage = (String) additionalProperties.get(INVOKER_PACKAGE);
-        } else {
-            additionalProperties.put(INVOKER_PACKAGE, invokerPackage);
-        }
-
-        // Get boolean properties
-        if (additionalProperties.containsKey(USE_BEANVALIDATION)) {
-            this.setUseBeanValidation(convertPropertyToBoolean(USE_BEANVALIDATION));
-        }
-        writePropertyBack(USE_BEANVALIDATION, useBeanValidation);
-
         if (additionalProperties.containsKey(OPT_CONFIGURE_AUTH)) {
             this.configureAuthorization = convertPropertyToBoolean(OPT_CONFIGURE_AUTH);
         }
         writePropertyBack(OPT_CONFIGURE_AUTH, configureAuthorization);
 
-        // Get enum properties
-        if (additionalProperties.containsKey(OPT_BUILD)) {
-            switch ((String) additionalProperties.get(OPT_BUILD)) {
-                case OPT_BUILD_GRADLE:
-                case OPT_BUILD_MAVEN:
-                case OPT_BUILD_ALL:
-                    this.buildTool = (String) additionalProperties.get(OPT_BUILD);
-                    break;
-                default:
-                    throw new RuntimeException("Build tool \"" + additionalProperties.get(OPT_BUILD) + "\" is not supported or misspelled.");
-            }
-        }
-        additionalProperties.put(OPT_BUILD, buildTool);
-
-        if (additionalProperties.containsKey(OPT_TEST)) {
-            switch ((String) additionalProperties.get(OPT_TEST)) {
-                case OPT_TEST_JUNIT:
-                case OPT_TEST_SPOCK:
-                    this.testTool = (String) additionalProperties.get(OPT_TEST);
-                    break;
-                default:
-                    throw new RuntimeException("Test tool \"" + additionalProperties.get(OPT_TEST) + "\" is not supported or misspelled.");
-            }
-        }
-        additionalProperties.put(OPT_TEST, testTool);
-        if (testTool.equals(OPT_TEST_JUNIT)) {
-            additionalProperties.put("isTestJunit", true);
-        } else if (testTool.equals(OPT_TEST_SPOCK)) {
-            additionalProperties.put("isTestSpock", true);
-        }
+        // Write property that is present in server
+        writePropertyBack(OPT_USE_AUTH, true);
 
         final String invokerFolder = (sourceFolder + '/' + invokerPackage).replace(".", "/");
-        final String apiFolder = (sourceFolder + '/' + apiPackage).replace(".", "/");
-
-        // Add all the supporting files
-        String resourceFolder = projectFolder + "/resources";
-        supportingFiles.add(new SupportingFile("configuration/application.yml.mustache", resourceFolder, "application.yml").doNotOverwrite());
 
         // Authorization files
         if (configureAuthorization) {
             final String authFolder = invokerFolder + "/auth";
-            supportingFiles.add(new SupportingFile("auth/Authorization.mustache", authFolder, "Authorization.java"));
-            supportingFiles.add(new SupportingFile("auth/AuthorizationBinder.mustache", authFolder, "AuthorizationBinder.java"));
-            supportingFiles.add(new SupportingFile("auth/Authorizations.mustache", authFolder, "Authorizations.java"));
-            supportingFiles.add(new SupportingFile("auth/AuthorizationFilter.mustache", authFolder, "AuthorizationFilter.java"));
+            supportingFiles.add(new SupportingFile("client/auth/Authorization.mustache", authFolder, "Authorization.java"));
+            supportingFiles.add(new SupportingFile("client/auth/AuthorizationBinder.mustache", authFolder, "AuthorizationBinder.java"));
+            supportingFiles.add(new SupportingFile("client/auth/Authorizations.mustache", authFolder, "Authorizations.java"));
+            supportingFiles.add(new SupportingFile("client/auth/AuthorizationFilter.mustache", authFolder, "AuthorizationFilter.java"));
             final String authConfigurationFolder = authFolder + "/configuration";
-            supportingFiles.add(new SupportingFile("auth/configuration/ApiKeyAuthConfiguration.mustache", authConfigurationFolder, "ApiKeyAuthConfiguration.java"));
-            supportingFiles.add(new SupportingFile("auth/configuration/ConfigurableAuthorization.mustache", authConfigurationFolder, "ConfigurableAuthorization.java"));
-            supportingFiles.add(new SupportingFile("auth/configuration/HttpBasicAuthConfiguration.mustache", authConfigurationFolder, "HttpBasicAuthConfiguration.java"));
+            supportingFiles.add(new SupportingFile("client/auth/configuration/ApiKeyAuthConfiguration.mustache", authConfigurationFolder, "ApiKeyAuthConfiguration.java"));
+            supportingFiles.add(new SupportingFile("client/auth/configuration/ConfigurableAuthorization.mustache", authConfigurationFolder, "ConfigurableAuthorization.java"));
+            supportingFiles.add(new SupportingFile("client/auth/configuration/HttpBasicAuthConfiguration.mustache", authConfigurationFolder, "HttpBasicAuthConfiguration.java"));
         }
 
-        // Query files
-        final String queryFolder = invokerFolder + "/query";
-        supportingFiles.add(new SupportingFile("query/QueryParam.mustache", queryFolder, "QueryParam.java"));
-        supportingFiles.add(new SupportingFile("query/QueryParamBinder.mustache", queryFolder, "QueryParamBinder.java"));
-
-        if (buildTool.equals(OPT_BUILD_GRADLE) || buildTool.equals(OPT_BUILD_ALL)) {
-            // Gradle files
-            supportingFiles.add(new SupportingFile("configuration/gradle/build.gradle.mustache", "", "build.gradle").doNotOverwrite());
-            supportingFiles.add(new SupportingFile("configuration/gradle/settings.gradle.mustache", "", "settings.gradle").doNotOverwrite());
-            supportingFiles.add(new SupportingFile("configuration/gradle/gradle.properties.mustache", "", "gradle.properties").doNotOverwrite());
-
-            // Gradlew files
-            final String gradleWrapperFolder = "gradle/wrapper";
-            supportingFiles.add(new SupportingFile("configuration/gradlew/gradlew.mustache", "", "gradlew"));
-            supportingFiles.add(new SupportingFile("configuration/gradlew/gradlew.bat.mustache", "", "gradlew.bat"));
-            supportingFiles.add(new SupportingFile("configuration/gradlew/gradle-wrapper.properties.mustache", gradleWrapperFolder, "gradle-wrapper.properties"));
-            supportingFiles.add(new SupportingFile("configuration/gradlew/gradle-wrapper.jar", gradleWrapperFolder, "gradle-wrapper.jar"));
-        }
-
-        if (buildTool.equals(OPT_BUILD_MAVEN) || buildTool.equals(OPT_BUILD_ALL)) {
-            // Maven files
-            supportingFiles.add(new SupportingFile("configuration/pom.xml.mustache", "", "pom.xml").doNotOverwrite());
-
-            // Maven wrapper files
-            supportingFiles.add(new SupportingFile("configuration/mavenw/mvnw.mustache", "", "mvnw"));
-            supportingFiles.add(new SupportingFile("configuration/mavenw/mvnw.bat.mustache", "", "mvnw.bat"));
-            supportingFiles.add(new SupportingFile("configuration/mavenw/MavenWrapperDownloader.java.mustache", ".mvn/wrapper", "MavenWrapperDownloader.java"));
-            supportingFiles.add(new SupportingFile("configuration/mavenw/maven-wrapper.jar.mustache", ".mvn/wrapper", "maven-wrapper.jar"));
-            supportingFiles.add(new SupportingFile("configuration/mavenw/maven-wrapper.properties.mustache", ".mvn/wrapper", "maren-wrapper.properties"));
-        }
-
-        // Git files
-        supportingFiles.add(new SupportingFile("configuration/git/gitignore.mustache", "", ".gitignore").doNotOverwrite());
-
-        // Use the default java Date
-        typeMapping.put("date", "LocalDate");
-        typeMapping.put("DateTime", "LocalDateTime");
-        importMapping.put("LocalDate", "java.time.LocalDate");
-        importMapping.put("LocalDateTime", "java.time.LocalDateTime");
-
-        // Add documentation files
-        supportingFiles.add(new SupportingFile("doc/README.mustache", "", "README.md").doNotOverwrite());
-        supportingFiles.add(new SupportingFile("doc/auth.mustache", apiDocPath, "auth.md"));
-        modelDocTemplateFiles.put("doc/model_doc.mustache", ".md");
-        apiDocTemplateFiles.put("doc/api_doc.mustache", ".md");
-        modelDocTemplateFiles.remove("model_doc.mustache");
-        apiDocTemplateFiles.remove("api_doc.mustache");
-
-        // Add model files
-        modelTemplateFiles.remove("model.mustache");
-        modelTemplateFiles.put("model/model.mustache", ".java");
+        // Api file
+        apiTemplateFiles.clear();
+        apiTemplateFiles.put("client/api.mustache", ".java");
 
         // Add test files
+        apiTestTemplateFiles.clear();
         if (testTool.equals(OPT_TEST_JUNIT)) {
-            apiTestTemplateFiles.put("api_test.mustache", ".java");
-            modelTestTemplateFiles.put("model_test.mustache", ".java");
+            apiTestTemplateFiles.put("client/test/api_test.mustache", ".java");
         } else if (testTool.equals(OPT_TEST_SPOCK)) {
-            apiTestTemplateFiles.put("api_test.groovy.mustache", ".groovy");
-            modelTestTemplateFiles.put("model_test.groovy.mustache", ".groovy");
+            apiTestTemplateFiles.put("client/test/api_test.groovy.mustache", ".groovy");
         }
-    }
 
-    @Override
-    public String apiTestFileFolder() {
-        if (testTool.equals(OPT_TEST_SPOCK)) {
-            return getOutputDir() + "/src/test/groovy/" + getInvokerPackage().replaceAll("\\.", "/") + "/api";
-        }
-        return getOutputDir() + "/src/test/java/" + getInvokerPackage().replaceAll("\\.", "/") + "/api";
-    }
-
-    @Override
-    public String modelTestFileFolder() {
-        if (testTool.equals(OPT_TEST_SPOCK)) {
-            return getOutputDir() + "/src/test/groovy/" + getInvokerPackage().replaceAll("\\.", "/") + "/model";
-        }
-        return getOutputDir() + "/src/test/java/" + getInvokerPackage().replaceAll("\\.", "/") + "/model";
-    }
-
-    @Override
-    public String toApiTestFilename(String name) {
-        if (testTool.equals(OPT_TEST_SPOCK)) {
-            return toApiName(name) + "Spec";
-        }
-        return toApiName(name) + "Test";
-    }
-
-    @Override
-    public String toModelTestFilename(String name) {
-        if (testTool.equals(OPT_TEST_SPOCK)) {
-            return toModelName(name) + "Spec";
-        }
-        return toModelName(name) + "Test";
-    }
-
-    @Override
-    public void setUseBeanValidation(boolean useBeanValidation) {
-        this.useBeanValidation = useBeanValidation;
-    }
-
-    @Override
-    public String toApiVarName(String name) {
-        String apiVarName = super.toApiVarName(name);
-        if (reservedWords.contains(apiVarName)) {
-            apiVarName = escapeReservedWord(apiVarName);
-        }
-        return apiVarName;
-    }
-
-    public boolean isUseBeanValidation() {
-        return useBeanValidation;
-    }
-
-    public boolean isConfigureAuthorization() {
-        return configureAuthorization;
+        // Add documentation files
+        supportingFiles.add(new SupportingFile("client/doc/README.mustache", "", "README.md").doNotOverwrite());
+        supportingFiles.add(new SupportingFile("client/doc/auth.mustache", apiDocPath, "auth.md"));
+        apiDocTemplateFiles.clear();
+        apiDocTemplateFiles.put("client/doc/api_doc.mustache", ".md");
     }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautServerCodegen.java
new file mode 100644
index 00000000000..da071b68ec8
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautServerCodegen.java
@@ -0,0 +1,178 @@
+package org.openapitools.codegen.languages;
+
+import org.openapitools.codegen.*;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
+import org.openapitools.codegen.utils.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.io.File;
+import java.util.List;
+import java.util.Map;
+
+
+public class JavaMicronautServerCodegen extends JavaMicronautAbstractCodegen {
+    public static final String OPT_CONTROLLER_PACKAGE = "controllerPackage";
+    public static final String OPT_GENERATE_CONTROLLER_FROM_EXAMPLES = "generateControllerFromExamples";
+    public static final String OPT_GENERATE_CONTROLLER_AS_ABSTRACT = "generateControllerAsAbstract";
+
+    private final Logger LOGGER = LoggerFactory.getLogger(JavaClientCodegen.class);
+
+    public static final String NAME = "java-micronaut-server";
+
+    protected String controllerPackage = "org.openapitools.controller";
+    protected boolean generateControllerAsAbstract = false;
+    protected boolean generateControllerFromExamples = false;
+    protected boolean useAuth = true;
+
+    protected String controllerPrefix = "";
+    protected String controllerSuffix = "Controller";
+    protected String apiPrefix = "Abstract";
+    protected String apiSuffix = "Controller";
+
+    public JavaMicronautServerCodegen() {
+        super();
+
+        title = "OpenAPI Micronaut Server";;
+        apiPackage = "org.openapitools.api";
+        apiDocPath = "docs/controllers";
+
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+                .stability(Stability.BETA)
+                .build();
+        additionalProperties.put("server", "true");
+
+        cliOptions.add(new CliOption(OPT_CONTROLLER_PACKAGE, "The package in which controllers will be generated").defaultValue(apiPackage));
+        cliOptions.removeIf(c -> c.getOpt().equals(CodegenConstants.API_PACKAGE));
+        cliOptions.add(CliOption.newBoolean(OPT_GENERATE_CONTROLLER_FROM_EXAMPLES,
+                "Generate the implementation of controller and tests from parameter and return examples that will verify that the api works as desired (for testing)",
+                generateControllerFromExamples));
+        cliOptions.add(CliOption.newBoolean(OPT_GENERATE_CONTROLLER_AS_ABSTRACT,
+                "Generate an abstract class for controller to be extended. (" + CodegenConstants.API_PACKAGE +
+                " is then used for the abstract class, and " + OPT_CONTROLLER_PACKAGE +
+                " is used for implementation that extends it.)",
+                generateControllerAsAbstract));
+        cliOptions.add(CliOption.newBoolean(OPT_USE_AUTH, "Whether to import authorization and to annotate controller methods accordingly", useAuth));
+
+        // Set the type mappings
+        // It could be also StreamingFileUpload
+        typeMapping.put("file", "CompletedFileUpload");
+        importMapping.put("CompletedFileUpload", "io.micronaut.http.multipart.CompletedFileUpload");
+    }
+
+    @Override
+    public CodegenType getTag() {
+        return CodegenType.SERVER;
+    }
+
+    @Override
+    public String getName() {
+        return NAME;
+    }
+
+    @Override
+    public String getHelp() {
+        return "Generates a Java Micronaut Server.";
+    }
+
+    @Override
+    public void processOpts() {
+        // Get all the properties that require to know if user specified them directly
+        if (additionalProperties.containsKey(OPT_GENERATE_CONTROLLER_AS_ABSTRACT)) {
+            generateControllerAsAbstract = convertPropertyToBoolean(OPT_GENERATE_CONTROLLER_AS_ABSTRACT);
+        }
+        writePropertyBack(OPT_GENERATE_CONTROLLER_AS_ABSTRACT, generateControllerAsAbstract);
+
+        if (additionalProperties.containsKey(OPT_CONTROLLER_PACKAGE)) {
+            controllerPackage = (String) additionalProperties.get(OPT_CONTROLLER_PACKAGE);
+        } else if (!generateControllerAsAbstract && additionalProperties.containsKey(CodegenConstants.API_PACKAGE)) {
+            controllerPackage = (String) additionalProperties.get(CodegenConstants.API_PACKAGE);
+        }
+        additionalProperties.put(OPT_CONTROLLER_PACKAGE, controllerPackage);
+
+        if (!generateControllerAsAbstract) {
+            apiPackage = controllerPackage;
+            additionalProperties.put(CodegenConstants.API_PACKAGE, apiPackage);
+        }
+        super.processOpts();
+
+        // Get all the other properties after superclass processed everything
+        if (additionalProperties.containsKey(OPT_GENERATE_CONTROLLER_FROM_EXAMPLES)) {
+            generateControllerFromExamples = convertPropertyToBoolean(OPT_GENERATE_CONTROLLER_FROM_EXAMPLES);
+        }
+        writePropertyBack(OPT_GENERATE_CONTROLLER_FROM_EXAMPLES, generateControllerFromExamples);
+
+        if (additionalProperties.containsKey(OPT_USE_AUTH)) {
+            useAuth = convertPropertyToBoolean(OPT_USE_AUTH);
+        }
+        writePropertyBack(OPT_USE_AUTH, useAuth);
+
+        // Api file
+        apiTemplateFiles.clear();
+        if (generateControllerAsAbstract) {
+            setApiNamePrefix(apiPrefix);
+            setApiNameSuffix(apiSuffix);
+        } else {
+            setApiNamePrefix(controllerPrefix);
+            setApiNameSuffix(controllerSuffix);
+        }
+        apiTemplateFiles.put("server/controller.mustache", ".java");
+
+        // Add documentation files
+        supportingFiles.add(new SupportingFile("server/doc/README.mustache", "", "README.md").doNotOverwrite());
+        apiDocTemplateFiles.clear();
+        apiDocTemplateFiles.put("server/doc/controller_doc.mustache", ".md");
+
+        // Add test files
+        apiTestTemplateFiles.clear();
+        // Controller Implementation is generated as a test file - so that it is not overwritten
+        if (generateControllerAsAbstract) {
+            apiTestTemplateFiles.put("server/controllerImplementation.mustache", ".java");
+        }
+        if (testTool.equals(OPT_TEST_JUNIT)) {
+            apiTestTemplateFiles.put("server/test/controller_test.mustache", ".java");
+        } else if (testTool.equals(OPT_TEST_SPOCK)) {
+            apiTestTemplateFiles.put("server/test/controller_test.groovy.mustache", ".groovy");
+        }
+
+        // Add Application.java file
+        String invokerFolder = (sourceFolder + '/' + invokerPackage).replace('.', '/');
+        supportingFiles.add(new SupportingFile("common/configuration/Application.mustache", invokerFolder, "Application.java").doNotOverwrite());
+    }
+
+    @Override
+    public String apiTestFilename(String templateName, String tag) {
+        if (generateControllerAsAbstract && templateName.contains("controllerImplementation")) {
+            return (
+                    outputFolder + File.separator +
+                    sourceFolder + File.separator +
+                    controllerPackage.replace('.', File.separatorChar) + File.separator +
+                    StringUtils.camelize(controllerPrefix + "_" + tag + "_" + controllerSuffix) + ".java"
+            ).replace('/', File.separatorChar);
+        }
+
+        return super.apiTestFilename(templateName, tag);
+    }
+
+    @Override
+    public void setParameterExampleValue(CodegenParameter p) {
+        super.setParameterExampleValue(p);
+
+        if (p.isFile) {
+            // The CompletedFileUpload cannot be initialized
+            p.example = "null";
+        }
+    }
+
+    @Override
+    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<Object> allModels) {
+        objs = super.postProcessOperationsWithModels(objs, allModels);
+
+        // Add the controller classname to operations
+        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        String controllerClassname = StringUtils.camelize(controllerPrefix + "_" + operations.get("pathPrefix") + "_" + controllerSuffix);
+        objs.put("controllerClassname", controllerClassname);
+
+        return objs;
+    }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaPlayFrameworkCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaPlayFrameworkCodegen.java
index a152d69cf39..400ed76f95a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaPlayFrameworkCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaPlayFrameworkCodegen.java
@@ -451,6 +451,14 @@ public class JavaPlayFrameworkCodegen extends AbstractJavaCodegen implements Bea
 
         @Override
         public boolean equals(Object o) {
+            if (o == null) {
+                return false;
+            }
+
+            if (this.getClass() != o.getClass()) {
+                return false;
+            }
+
             boolean result = super.equals(o);
             JavaPlayFrameworkCodegen.ExtendedCodegenSecurity that = (JavaPlayFrameworkCodegen.ExtendedCodegenSecurity) o;
             return result &&
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptApolloClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptApolloClientCodegen.java
index 32b601491d3..27649495346 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptApolloClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptApolloClientCodegen.java
@@ -1143,4 +1143,7 @@ public class JavascriptApolloClientCodegen extends DefaultCodegen implements Cod
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVASCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClientCodegen.java
index 4e9ddd2a007..1f8f973e029 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClientCodegen.java
@@ -1240,4 +1240,7 @@ public class JavascriptClientCodegen extends DefaultCodegen implements CodegenCo
         }
         return super.getCollectionFormat(codegenParameter);
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVASCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClosureAngularClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClosureAngularClientCodegen.java
index edc3c21e4d5..8744934020a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClosureAngularClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClosureAngularClientCodegen.java
@@ -319,4 +319,7 @@ public class JavascriptClosureAngularClientCodegen extends DefaultCodegen implem
     public void setUseEs6(boolean useEs6) {
         this.useEs6 = useEs6;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVASCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptFlowtypedClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptFlowtypedClientCodegen.java
index c82f5e1c68e..cf344c8281c 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptFlowtypedClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptFlowtypedClientCodegen.java
@@ -223,4 +223,6 @@ public class JavascriptFlowtypedClientCodegen extends AbstractTypeScriptClientCo
         this.npmRepository = npmRepository;
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVASCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/K6ClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/K6ClientCodegen.java
index 982a3fefbe0..05a9d1536d4 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/K6ClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/K6ClientCodegen.java
@@ -46,16 +46,7 @@ import javax.annotation.Nullable;
 import com.google.common.collect.ImmutableMap;
 import org.apache.commons.text.StringEscapeUtils;
 import org.apache.commons.lang3.StringUtils;
-import org.openapitools.codegen.CodegenConfig;
-import org.openapitools.codegen.CodegenConstants;
-import org.openapitools.codegen.CodegenModel;
-import org.openapitools.codegen.CodegenOperation;
-import org.openapitools.codegen.CodegenParameter;
-import org.openapitools.codegen.CodegenProperty;
-import org.openapitools.codegen.CodegenResponse;
-import org.openapitools.codegen.CodegenType;
-import org.openapitools.codegen.DefaultCodegen;
-import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.utils.ModelUtils;
@@ -1155,4 +1146,6 @@ public class K6ClientCodegen extends DefaultCodegen implements CodegenConfig {
         }
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.K_SIX; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerCodegen.java
index 3ad47e68fee..d1b1d1d57fb 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerCodegen.java
@@ -23,6 +23,7 @@ import org.openapitools.codegen.CliOption;
 import org.openapitools.codegen.CodegenConstants;
 import org.openapitools.codegen.CodegenType;
 import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.languages.features.BeanValidationFeatures;
 import org.openapitools.codegen.meta.features.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -33,9 +34,14 @@ import java.util.EnumSet;
 import java.util.List;
 import java.util.Map;
 
-public class KotlinServerCodegen extends AbstractKotlinCodegen {
+public class KotlinServerCodegen extends AbstractKotlinCodegen implements BeanValidationFeatures {
+
+    public static final String INTERFACE_ONLY = "interfaceOnly";
+    public static final String USE_COROUTINES = "useCoroutines";
+    public static final String RETURN_RESPONSE = "returnResponse";
     public static final String DEFAULT_LIBRARY = Constants.KTOR;
     private final Logger LOGGER = LoggerFactory.getLogger(KotlinServerCodegen.class);
+
     private Boolean autoHeadFeatureEnabled = true;
     private Boolean conditionalHeadersFeatureEnabled = false;
     private Boolean hstsFeatureEnabled = true;
@@ -43,6 +49,10 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen {
     private Boolean compressionFeatureEnabled = true;
     private Boolean locationsFeatureEnabled = true;
     private Boolean metricsFeatureEnabled = true;
+    private boolean interfaceOnly = false;
+    private boolean useBeanValidation = false;
+    private boolean useCoroutines = false;
+    private boolean returnResponse = false;
 
     // This is here to potentially warn the user when an option is not supported by the target framework.
     private Map<String, List<String>> optionsSupportedPerFramework = new ImmutableMap.Builder<String, List<String>>()
@@ -102,6 +112,7 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen {
         modelPackage = packageName + ".models";
 
         supportedLibraries.put(Constants.KTOR, "ktor framework");
+        supportedLibraries.put(Constants.JAXRS_SPEC, "JAX-RS spec only");
 
         // TODO: Configurable server engine. Defaults to netty in build.gradle.
         CliOption library = new CliOption(CodegenConstants.LIBRARY, CodegenConstants.LIBRARY_DESC);
@@ -117,6 +128,11 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen {
         addSwitch(Constants.COMPRESSION, Constants.COMPRESSION_DESC, getCompressionFeatureEnabled());
         addSwitch(Constants.LOCATIONS, Constants.LOCATIONS_DESC, getLocationsFeatureEnabled());
         addSwitch(Constants.METRICS, Constants.METRICS_DESC, getMetricsFeatureEnabled());
+
+        cliOptions.add(CliOption.newBoolean(INTERFACE_ONLY, "Whether to generate only API interface stubs without the server files. This option is currently supported only when using jaxrs-spec library.").defaultValue(String.valueOf(interfaceOnly)));
+        cliOptions.add(CliOption.newBoolean(USE_BEANVALIDATION, "Use BeanValidation API annotations. This option is currently supported only when using jaxrs-spec library.", useBeanValidation));
+        cliOptions.add(CliOption.newBoolean(USE_COROUTINES, "Whether to use the Coroutines. This option is currently supported only when using jaxrs-spec library."));
+        cliOptions.add(CliOption.newBoolean(RETURN_RESPONSE, "Whether generate API interface should return javax.ws.rs.core.Response instead of a deserialized entity. Only useful if interfaceOnly is true. This option is currently supported only when using jaxrs-spec library.").defaultValue(String.valueOf(returnResponse)));
     }
 
     public Boolean getAutoHeadFeatureEnabled() {
@@ -195,6 +211,33 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen {
             this.setLibrary((String) additionalProperties.get(CodegenConstants.LIBRARY));
         }
 
+        if (additionalProperties.containsKey(INTERFACE_ONLY)) {
+            interfaceOnly = Boolean.parseBoolean(additionalProperties.get(INTERFACE_ONLY).toString());
+            if (!interfaceOnly) {
+                additionalProperties.remove(INTERFACE_ONLY);
+            }
+        }
+
+        if (additionalProperties.containsKey(USE_COROUTINES)) {
+            useCoroutines = Boolean.parseBoolean(additionalProperties.get(USE_COROUTINES).toString());
+            if (!useCoroutines) {
+                additionalProperties.remove(USE_COROUTINES);
+            }
+        }
+
+        if (additionalProperties.containsKey(RETURN_RESPONSE)) {
+            returnResponse = Boolean.parseBoolean(additionalProperties.get(RETURN_RESPONSE).toString());
+            if (!returnResponse) {
+                additionalProperties.remove(RETURN_RESPONSE);
+            }
+        }
+
+        if (additionalProperties.containsKey(USE_BEANVALIDATION)) {
+            setUseBeanValidation(convertPropertyToBoolean(USE_BEANVALIDATION));
+        }
+
+        writePropertyBack(USE_BEANVALIDATION, useBeanValidation);
+
         // set default library to "ktor"
         if (StringUtils.isEmpty(library)) {
             this.setLibrary(DEFAULT_LIBRARY);
@@ -249,29 +292,40 @@ public class KotlinServerCodegen extends AbstractKotlinCodegen {
         String resourcesFolder = "src/main/resources"; // not sure this can be user configurable.
 
         supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
-        supportingFiles.add(new SupportingFile("Dockerfile.mustache", "", "Dockerfile"));
+
+        if (library.equals(Constants.KTOR)) {
+            supportingFiles.add(new SupportingFile("Dockerfile.mustache", "", "Dockerfile"));
+        }
 
         supportingFiles.add(new SupportingFile("build.gradle.mustache", "", "build.gradle"));
         supportingFiles.add(new SupportingFile("settings.gradle.mustache", "", "settings.gradle"));
         supportingFiles.add(new SupportingFile("gradle.properties", "", "gradle.properties"));
 
-        supportingFiles.add(new SupportingFile("AppMain.kt.mustache", packageFolder, "AppMain.kt"));
-        supportingFiles.add(new SupportingFile("Configuration.kt.mustache", packageFolder, "Configuration.kt"));
+        if (library.equals(Constants.KTOR)) {
+            supportingFiles.add(new SupportingFile("AppMain.kt.mustache", packageFolder, "AppMain.kt"));
+            supportingFiles.add(new SupportingFile("Configuration.kt.mustache", packageFolder, "Configuration.kt"));
 
-        if (generateApis && locationsFeatureEnabled) {
-            supportingFiles.add(new SupportingFile("Paths.kt.mustache", packageFolder, "Paths.kt"));
+            if (generateApis && locationsFeatureEnabled) {
+                supportingFiles.add(new SupportingFile("Paths.kt.mustache", packageFolder, "Paths.kt"));
+            }
+
+            supportingFiles.add(new SupportingFile("application.conf.mustache", resourcesFolder, "application.conf"));
+            supportingFiles.add(new SupportingFile("logback.xml", resourcesFolder, "logback.xml"));
+
+            final String infrastructureFolder = (sourceFolder + File.separator + packageName + File.separator + "infrastructure").replace(".", File.separator);
+
+            supportingFiles.add(new SupportingFile("ApiKeyAuth.kt.mustache", infrastructureFolder, "ApiKeyAuth.kt"));
         }
+    }
 
-        supportingFiles.add(new SupportingFile("application.conf.mustache", resourcesFolder, "application.conf"));
-        supportingFiles.add(new SupportingFile("logback.xml", resourcesFolder, "logback.xml"));
-
-        final String infrastructureFolder = (sourceFolder + File.separator + packageName + File.separator + "infrastructure").replace(".", File.separator);
-
-        supportingFiles.add(new SupportingFile("ApiKeyAuth.kt.mustache", infrastructureFolder, "ApiKeyAuth.kt"));
+    @Override
+    public void setUseBeanValidation(boolean useBeanValidation) {
+        this.useBeanValidation = useBeanValidation;
     }
 
     public static class Constants {
         public final static String KTOR = "ktor";
+        public final static String JAXRS_SPEC = "jaxrs-spec";
         public final static String AUTOMATIC_HEAD_REQUESTS = "featureAutoHead";
         public final static String AUTOMATIC_HEAD_REQUESTS_DESC = "Automatically provide responses to HEAD requests for existing routes that have the GET verb defined.";
         public final static String CONDITIONAL_HEADERS = "featureConditionalHeaders";
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerDeprecatedCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerDeprecatedCodegen.java
new file mode 100644
index 00000000000..bbdf6064c02
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerDeprecatedCodegen.java
@@ -0,0 +1,266 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ * Copyright 2018 SmartBear Software
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.languages;
+
+import com.google.common.collect.ImmutableMap;
+import org.apache.commons.lang3.StringUtils;
+import org.openapitools.codegen.CliOption;
+import org.openapitools.codegen.CodegenConstants;
+import org.openapitools.codegen.CodegenType;
+import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
+import org.openapitools.codegen.meta.features.*;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Map;
+
+public class KotlinServerDeprecatedCodegen extends AbstractKotlinCodegen {
+
+    public static final String DEFAULT_LIBRARY = Constants.KTOR;
+    private final Logger LOGGER = LoggerFactory.getLogger(KotlinServerDeprecatedCodegen.class);
+    private Boolean autoHeadFeatureEnabled = true;
+    private Boolean conditionalHeadersFeatureEnabled = false;
+    private Boolean hstsFeatureEnabled = true;
+    private Boolean corsFeatureEnabled = false;
+    private Boolean compressionFeatureEnabled = true;
+
+    // This is here to potentially warn the user when an option is not supported by the target framework.
+    private Map<String, List<String>> optionsSupportedPerFramework = new ImmutableMap.Builder<String, List<String>>()
+            .put(Constants.KTOR, Arrays.asList(
+                    Constants.AUTOMATIC_HEAD_REQUESTS,
+                    Constants.CONDITIONAL_HEADERS,
+                    Constants.HSTS,
+                    Constants.CORS,
+                    Constants.COMPRESSION
+            ))
+            .build();
+
+    /**
+     * Constructs an instance of `KotlinServerDeprecatedCodegen`.
+     */
+    public KotlinServerDeprecatedCodegen() {
+        super();
+
+        modifyFeatureSet(features -> features
+                .includeDocumentationFeatures(DocumentationFeature.Readme)
+                .wireFormatFeatures(EnumSet.of(WireFormatFeature.JSON, WireFormatFeature.XML))
+                .securityFeatures(EnumSet.of(
+                        SecurityFeature.BasicAuth,
+                        SecurityFeature.ApiKey,
+                        SecurityFeature.OAuth2_Implicit
+                ))
+                .excludeGlobalFeatures(
+                        GlobalFeature.XMLStructureDefinitions,
+                        GlobalFeature.Callbacks,
+                        GlobalFeature.LinkObjects,
+                        GlobalFeature.ParameterStyling
+                )
+                .excludeSchemaSupportFeatures(
+                        SchemaSupportFeature.Polymorphism
+                )
+                .excludeParameterFeatures(
+                        ParameterFeature.Cookie
+                )
+        );
+
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+            .stability(Stability.DEPRECATED)
+            .build();
+
+        artifactId = "kotlin-server-deprecated";
+        packageName = "org.openapitools.server";
+
+        // cliOptions default redefinition need to be updated
+        updateOption(CodegenConstants.ARTIFACT_ID, this.artifactId);
+        updateOption(CodegenConstants.PACKAGE_NAME, this.packageName);
+
+        outputFolder = "generated-code" + File.separator + "kotlin-server-deprecated";
+        modelTemplateFiles.put("model.mustache", ".kt");
+        apiTemplateFiles.put("api.mustache", ".kt");
+        embeddedTemplateDir = templateDir = "kotlin-server-deprecated";
+        apiPackage = packageName + ".apis";
+        modelPackage = packageName + ".models";
+
+        supportedLibraries.put(Constants.KTOR, "ktor framework");
+
+        // TODO: Configurable server engine. Defaults to netty in build.gradle.
+        CliOption library = new CliOption(CodegenConstants.LIBRARY, CodegenConstants.LIBRARY_DESC);
+        library.setDefault(DEFAULT_LIBRARY);
+        library.setEnum(supportedLibraries);
+
+        cliOptions.add(library);
+
+        addSwitch(Constants.AUTOMATIC_HEAD_REQUESTS, Constants.AUTOMATIC_HEAD_REQUESTS_DESC, getAutoHeadFeatureEnabled());
+        addSwitch(Constants.CONDITIONAL_HEADERS, Constants.CONDITIONAL_HEADERS_DESC, getConditionalHeadersFeatureEnabled());
+        addSwitch(Constants.HSTS, Constants.HSTS_DESC, getHstsFeatureEnabled());
+        addSwitch(Constants.CORS, Constants.CORS_DESC, getCorsFeatureEnabled());
+        addSwitch(Constants.COMPRESSION, Constants.COMPRESSION_DESC, getCompressionFeatureEnabled());
+    }
+
+    public Boolean getAutoHeadFeatureEnabled() {
+        return autoHeadFeatureEnabled;
+    }
+
+    public void setAutoHeadFeatureEnabled(Boolean autoHeadFeatureEnabled) {
+        this.autoHeadFeatureEnabled = autoHeadFeatureEnabled;
+    }
+
+    public Boolean getCompressionFeatureEnabled() {
+        return compressionFeatureEnabled;
+    }
+
+    public void setCompressionFeatureEnabled(Boolean compressionFeatureEnabled) {
+        this.compressionFeatureEnabled = compressionFeatureEnabled;
+    }
+
+    public Boolean getConditionalHeadersFeatureEnabled() {
+        return conditionalHeadersFeatureEnabled;
+    }
+
+    public void setConditionalHeadersFeatureEnabled(Boolean conditionalHeadersFeatureEnabled) {
+        this.conditionalHeadersFeatureEnabled = conditionalHeadersFeatureEnabled;
+    }
+
+    public Boolean getCorsFeatureEnabled() {
+        return corsFeatureEnabled;
+    }
+
+    public void setCorsFeatureEnabled(Boolean corsFeatureEnabled) {
+        this.corsFeatureEnabled = corsFeatureEnabled;
+    }
+
+    public String getHelp() {
+        return "Generates a Kotlin server (Ktor v1.1.3). IMPORTANT: this generator has been deprecated." +
+            " Please migrate to `kotlin-server` which supports Ktor v1.5.2+.";
+    }
+
+    public Boolean getHstsFeatureEnabled() {
+        return hstsFeatureEnabled;
+    }
+
+    public void setHstsFeatureEnabled(Boolean hstsFeatureEnabled) {
+        this.hstsFeatureEnabled = hstsFeatureEnabled;
+    }
+
+    public String getName() {
+        return "kotlin-server-deprecated";
+    }
+
+    public CodegenType getTag() {
+        return CodegenType.SERVER;
+    }
+
+    @Override
+    public void processOpts() {
+        super.processOpts();
+
+        // set default library to "ktor"
+        if (StringUtils.isEmpty(library)) {
+            this.setLibrary(DEFAULT_LIBRARY);
+            additionalProperties.put(CodegenConstants.LIBRARY, DEFAULT_LIBRARY);
+            LOGGER.info("`library` option is empty. Default to {}", DEFAULT_LIBRARY);
+        }
+
+        if (additionalProperties.containsKey(Constants.AUTOMATIC_HEAD_REQUESTS)) {
+            setAutoHeadFeatureEnabled(convertPropertyToBooleanAndWriteBack(Constants.AUTOMATIC_HEAD_REQUESTS));
+        } else {
+            additionalProperties.put(Constants.AUTOMATIC_HEAD_REQUESTS, getAutoHeadFeatureEnabled());
+        }
+
+        if (additionalProperties.containsKey(Constants.CONDITIONAL_HEADERS)) {
+            setConditionalHeadersFeatureEnabled(convertPropertyToBooleanAndWriteBack(Constants.CONDITIONAL_HEADERS));
+        } else {
+            additionalProperties.put(Constants.CONDITIONAL_HEADERS, getConditionalHeadersFeatureEnabled());
+        }
+
+        if (additionalProperties.containsKey(Constants.HSTS)) {
+            setHstsFeatureEnabled(convertPropertyToBooleanAndWriteBack(Constants.HSTS));
+        } else {
+            additionalProperties.put(Constants.HSTS, getHstsFeatureEnabled());
+        }
+
+        if (additionalProperties.containsKey(Constants.CORS)) {
+            setCorsFeatureEnabled(convertPropertyToBooleanAndWriteBack(Constants.CORS));
+        } else {
+            additionalProperties.put(Constants.CORS, getCorsFeatureEnabled());
+        }
+
+        if (additionalProperties.containsKey(Constants.COMPRESSION)) {
+            setCompressionFeatureEnabled(convertPropertyToBooleanAndWriteBack(Constants.COMPRESSION));
+        } else {
+            additionalProperties.put(Constants.COMPRESSION, getCompressionFeatureEnabled());
+        }
+
+        boolean generateApis = additionalProperties.containsKey(CodegenConstants.GENERATE_APIS) && (Boolean) additionalProperties.get(CodegenConstants.GENERATE_APIS);
+        String packageFolder = (sourceFolder + File.separator + packageName).replace(".", File.separator);
+        String resourcesFolder = "src/main/resources"; // not sure this can be user configurable.
+
+        supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+        supportingFiles.add(new SupportingFile("Dockerfile.mustache", "", "Dockerfile"));
+
+        supportingFiles.add(new SupportingFile("build.gradle.mustache", "", "build.gradle"));
+        supportingFiles.add(new SupportingFile("settings.gradle.mustache", "", "settings.gradle"));
+        supportingFiles.add(new SupportingFile("gradle.properties", "", "gradle.properties"));
+
+        supportingFiles.add(new SupportingFile("AppMain.kt.mustache", packageFolder, "AppMain.kt"));
+        supportingFiles.add(new SupportingFile("Configuration.kt.mustache", packageFolder, "Configuration.kt"));
+
+        if (generateApis) {
+            supportingFiles.add(new SupportingFile("Paths.kt.mustache", packageFolder, "Paths.kt"));
+        }
+
+        supportingFiles.add(new SupportingFile("application.conf.mustache", resourcesFolder, "application.conf"));
+        supportingFiles.add(new SupportingFile("logback.xml", resourcesFolder, "logback.xml"));
+
+        final String infrastructureFolder = (sourceFolder + File.separator + packageName + File.separator + "infrastructure").replace(".", File.separator);
+
+        supportingFiles.add(new SupportingFile("ApiKeyAuth.kt.mustache", infrastructureFolder, "ApiKeyAuth.kt"));
+    }
+
+    public static class Constants {
+        public final static String KTOR = "ktor";
+        public final static String AUTOMATIC_HEAD_REQUESTS = "featureAutoHead";
+        public final static String AUTOMATIC_HEAD_REQUESTS_DESC = "Automatically provide responses to HEAD requests for existing routes that have the GET verb defined.";
+        public final static String CONDITIONAL_HEADERS = "featureConditionalHeaders";
+        public final static String CONDITIONAL_HEADERS_DESC = "Avoid sending content if client already has same content, by checking ETag or LastModified properties.";
+        public final static String HSTS = "featureHSTS";
+        public final static String HSTS_DESC = "Avoid sending content if client already has same content, by checking ETag or LastModified properties.";
+        public final static String CORS = "featureCORS";
+        public final static String CORS_DESC = "Ktor by default provides an interceptor for implementing proper support for Cross-Origin Resource Sharing (CORS). See enable-cors.org.";
+        public final static String COMPRESSION = "featureCompression";
+        public final static String COMPRESSION_DESC = "Adds ability to compress outgoing content using gzip, deflate or custom encoder and thus reduce size of the response.";
+    }
+
+    @Override
+    public void postProcess() {
+        System.out.println("################################################################################");
+        System.out.println("# Thanks for using OpenAPI Generator.                                          #");
+        System.out.println("# Please consider donation to help us maintain this project \uD83D\uDE4F                 #");
+        System.out.println("# https://opencollective.com/openapi_generator/donate                          #");
+        System.out.println("#                                                                              #");
+        System.out.println("# This generator's contributed by Jim Schubert (https://github.com/jimschubert)#");
+        System.out.println("# Please support his work directly via https://patreon.com/jimschubert \uD83D\uDE4F      #");
+        System.out.println("################################################################################");
+    }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KtormSchemaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KtormSchemaCodegen.java
index 876a1b3b479..d69af302d54 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KtormSchemaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KtormSchemaCodegen.java
@@ -1224,4 +1224,6 @@ public class KtormSchemaCodegen extends AbstractKotlinCodegen {
         return StringUtils.removeEnd(packagePath, File.separator);
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.KTORM; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java
index 795b829036a..84af5454e0d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java
@@ -594,4 +594,7 @@ public class LuaClientCodegen extends DefaultCodegen implements CodegenConfig {
         System.out.println("# Pls support his work directly via https://github.com/sponsors/daurnimator \uD83D\uDE4F #");
         System.out.println("################################################################################");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.LUA; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MarkdownDocumentationCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MarkdownDocumentationCodegen.java
index 3a3e081f7b8..0e4ad861cb3 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MarkdownDocumentationCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MarkdownDocumentationCodegen.java
@@ -1,11 +1,6 @@
 package org.openapitools.codegen.languages;
 
-import org.openapitools.codegen.CodegenConfig;
-import org.openapitools.codegen.CodegenModel;
-import org.openapitools.codegen.CodegenProperty;
-import org.openapitools.codegen.CodegenType;
-import org.openapitools.codegen.DefaultCodegen;
-import org.openapitools.codegen.SupportingFile;
+import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.slf4j.Logger;
@@ -112,4 +107,7 @@ public class MarkdownDocumentationCodegen extends DefaultCodegen implements Code
     public String toModelFilename(String name) {
         return name;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MysqlSchemaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MysqlSchemaCodegen.java
index 97748d8d6db..d1f95897135 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MysqlSchemaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/MysqlSchemaCodegen.java
@@ -1254,4 +1254,7 @@ public class MysqlSchemaCodegen extends DefaultCodegen implements CodegenConfig
         // Trim trailing file separators from the overall path
         return StringUtils.removeEnd(packagePath, File.separator);
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.MYSQL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NimClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NimClientCodegen.java
index 572cbacc66f..4db55bcb17e 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NimClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NimClientCodegen.java
@@ -368,4 +368,7 @@ public class NimClientCodegen extends DefaultCodegen implements CodegenConfig {
             return name;
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.NIM; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NodeJSExpressServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NodeJSExpressServerCodegen.java
index 3af6d99b96f..774df093e1d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NodeJSExpressServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NodeJSExpressServerCodegen.java
@@ -455,4 +455,7 @@ public class NodeJSExpressServerCodegen extends DefaultCodegen implements Codege
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.JAVASCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OCamlClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OCamlClientCodegen.java
index 3b62750ae02..c9319b48ea4 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OCamlClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OCamlClientCodegen.java
@@ -828,4 +828,7 @@ public class OCamlClientCodegen extends DefaultCodegen implements CodegenConfig
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.OCAML; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ObjcClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ObjcClientCodegen.java
index 0075bcb8a57..5667e3e2918 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ObjcClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ObjcClientCodegen.java
@@ -791,4 +791,6 @@ public class ObjcClientCodegen extends DefaultCodegen implements CodegenConfig {
         return input.replace("*/", "*_/").replace("/*", "/_*");
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.OBJECTIVE_C; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIGenerator.java
index ccd3ff685d6..8e65252b1a3 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIGenerator.java
@@ -106,4 +106,7 @@ public class OpenAPIGenerator extends DefaultCodegen implements CodegenConfig {
         // just return the original string
         return input;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIYamlGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIYamlGenerator.java
index d697fe54fa1..d60fa609d39 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIYamlGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OpenAPIYamlGenerator.java
@@ -120,4 +120,6 @@ public class OpenAPIYamlGenerator extends DefaultCodegen implements CodegenConfi
         return input;
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PerlClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PerlClientCodegen.java
index 2a4a8d1905f..2f48cbc9b90 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PerlClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PerlClientCodegen.java
@@ -643,4 +643,7 @@ public class PerlClientCodegen extends DefaultCodegen implements CodegenConfig {
         System.out.println("# - OpenAPI Generator for Perl Developers            https://bit.ly/2OId6p3    #");
         System.out.println("################################################################################");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.PERL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSilexServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSilexServerCodegen.java
new file mode 100644
index 00000000000..212459d8d34
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSilexServerCodegen.java
@@ -0,0 +1,286 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ * Copyright 2018 SmartBear Software
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.languages;
+
+import io.swagger.v3.oas.models.media.ArraySchema;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.StringUtils;
+import org.openapitools.codegen.*;
+import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.utils.ModelUtils;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
+
+import java.io.File;
+import java.util.*;
+
+import static org.openapitools.codegen.utils.StringUtils.camelize;
+import static org.openapitools.codegen.utils.StringUtils.underscore;
+
+public class PhpSilexServerCodegen extends DefaultCodegen implements CodegenConfig {
+    protected String invokerPackage;
+    protected String groupId = "org.openapitools";
+    protected String artifactId = "openapi-server";
+    protected String artifactVersion = "1.0.0";
+
+    public PhpSilexServerCodegen() {
+        super();
+
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+                .stability(Stability.DEPRECATED)
+                .build();
+
+        modifyFeatureSet(features -> features
+                .includeDocumentationFeatures(DocumentationFeature.Readme)
+                .wireFormatFeatures(EnumSet.of(WireFormatFeature.JSON, WireFormatFeature.XML))
+                .securityFeatures(EnumSet.noneOf(SecurityFeature.class))
+                .excludeGlobalFeatures(
+                        GlobalFeature.XMLStructureDefinitions,
+                        GlobalFeature.Callbacks,
+                        GlobalFeature.LinkObjects,
+                        GlobalFeature.ParameterStyling
+                )
+                .excludeSchemaSupportFeatures(
+                        SchemaSupportFeature.Polymorphism
+                )
+        );
+
+        invokerPackage = camelize("OpenAPIServer");
+        String packageName = "OpenAPIServer";
+        modelPackage = "lib" + File.separator + "models";
+        apiPackage = "lib";
+        outputFolder = "generated-code" + File.separator + "php-silex";
+
+        // no model, api files
+        modelTemplateFiles.clear();
+        apiTemplateFiles.clear();
+
+        embeddedTemplateDir = templateDir = "php-silex";
+
+        setReservedWordsLowerCase(
+                Arrays.asList(
+                        "__halt_compiler", "abstract", "and", "array", "as", "break", "callable", "case", "catch",
+                        "class", "clone", "const", "continue", "declare", "default", "die", "do", "echo", "else",
+                        "elseif", "empty", "enddeclare", "endfor", "endforeach", "endif", "endswitch", "endwhile",
+                        "eval", "exit", "extends", "final", "for", "foreach", "function", "global", "goto", "if",
+                        "implements", "include", "include_once", "instanceof", "insteadof", "interface", "isset",
+                        "list", "namespace", "new", "or", "print", "private", "protected", "public", "require",
+                        "require_once", "return", "static", "switch", "throw", "trait", "try", "unset", "use",
+                        "var", "while", "xor")
+        );
+
+        additionalProperties.put(CodegenConstants.INVOKER_PACKAGE, invokerPackage);
+        additionalProperties.put(CodegenConstants.GROUP_ID, groupId);
+        additionalProperties.put(CodegenConstants.ARTIFACT_ID, artifactId);
+        additionalProperties.put(CodegenConstants.ARTIFACT_VERSION, artifactVersion);
+
+        // ref: http://php.net/manual/en/language.types.intro.php
+        languageSpecificPrimitives = new HashSet<>(
+                Arrays.asList(
+                        "boolean",
+                        "int",
+                        "integer",
+                        "double",
+                        "float",
+                        "string",
+                        "object",
+                        "DateTime",
+                        "mixed",
+                        "number")
+        );
+
+        instantiationTypes.put("array", "array");
+        instantiationTypes.put("map", "map");
+
+        // ref: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#data-types
+        typeMapping = new HashMap<>();
+        typeMapping.put("integer", "int");
+        typeMapping.put("long", "int");
+        typeMapping.put("float", "float");
+        typeMapping.put("double", "double");
+        typeMapping.put("string", "string");
+        typeMapping.put("byte", "int");
+        typeMapping.put("boolean", "boolean");
+        typeMapping.put("date", "DateTime");
+        typeMapping.put("datetime", "DateTime");
+        typeMapping.put("file", "string");
+        typeMapping.put("map", "map");
+        typeMapping.put("array", "array");
+        typeMapping.put("list", "array");
+        typeMapping.put("object", "object");
+        //TODO binary should be mapped to byte array
+        // mapped to String as a workaround
+        typeMapping.put("binary", "string");
+
+        supportingFiles.add(new SupportingFile("README.mustache", "", "README.md"));
+        supportingFiles.add(new SupportingFile("composer.json", "", "composer.json"));
+        supportingFiles.add(new SupportingFile("index.mustache", "", "index.php"));
+        supportingFiles.add(new SupportingFile(".htaccess", "", ".htaccess"));
+
+        // remove this line when this class extends AbstractPhpCodegen
+        supportingFiles.add(new SupportingFile("gitignore", "", ".gitignore"));
+    }
+
+    @Override
+    public CodegenType getTag() {
+        return CodegenType.SERVER;
+    }
+
+    @Override
+    public String getName() {
+        return "php-silex-deprecated";
+    }
+
+    @Override
+    public String getHelp() {
+        return "Generates a PHP Silex server library. IMPORTANT NOTE: this generator is no longer actively maintained.";
+    }
+
+    @Override
+    public String escapeReservedWord(String name) {
+        if (this.reservedWordsMappings().containsKey(name)) {
+            return this.reservedWordsMappings().get(name);
+        }
+        return "_" + name;
+    }
+
+    @Override
+    public String apiFileFolder() {
+        return (outputFolder + File.separator + apiPackage()).replace('/', File.separatorChar);
+    }
+
+    @Override
+    public String modelFileFolder() {
+        return (outputFolder + File.separator + modelPackage()).replace('/', File.separatorChar);
+    }
+
+    @Override
+    public String getTypeDeclaration(Schema p) {
+        if (ModelUtils.isArraySchema(p)) {
+            ArraySchema ap = (ArraySchema) p;
+            Schema inner = ap.getItems();
+            return getSchemaType(p) + "[" + getTypeDeclaration(inner) + "]";
+        } else if (ModelUtils.isMapSchema(p)) {
+            Schema inner = getAdditionalProperties(p);
+            return getSchemaType(p) + "[string," + getTypeDeclaration(inner) + "]";
+        }
+        return super.getTypeDeclaration(p);
+    }
+
+    @Override
+    public String getSchemaType(Schema p) {
+        String openAPIType = super.getSchemaType(p);
+        String type = null;
+        if (typeMapping.containsKey(openAPIType)) {
+            type = typeMapping.get(openAPIType);
+            if (languageSpecificPrimitives.contains(type)) {
+                return type;
+            } else if (instantiationTypes.containsKey(type)) {
+                return type;
+            }
+        } else {
+            type = openAPIType;
+        }
+        if (type == null) {
+            return null;
+        }
+        return toModelName(type);
+    }
+
+    @Override
+    public String toDefaultValue(Schema p) {
+        return "null";
+    }
+
+
+    @Override
+    public String toVarName(String name) {
+        // return the name in underscore style
+        // PhoneNumber => phone_number
+        name = underscore(name); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
+
+        // parameter name starting with number won't compile
+        // need to escape it by appending _ at the beginning
+        if (name.matches("^\\d.*")) {
+            name = "_" + name;
+        }
+
+        return name;
+    }
+
+    @Override
+    public String toParamName(String name) {
+        // should be the same as variable name
+        return toVarName(name);
+    }
+
+    @Override
+    public String toModelName(String name) {
+        // model name cannot use reserved keyword
+        if (isReservedWord(name)) {
+            escapeReservedWord(name); // e.g. return => _return
+        }
+
+        // camelize the model name
+        // phone_number => PhoneNumber
+        return camelize(name);
+    }
+
+    @Override
+    public String toModelFilename(String name) {
+        // should be the same as the model name
+        return toModelName(name);
+    }
+
+    @Override
+    public String escapeQuotationMark(String input) {
+        // remove ' to avoid code injection
+        return input.replace("'", "");
+    }
+
+    @Override
+    public String escapeUnsafeCharacters(String input) {
+        return input.replace("*/", "*_/").replace("/*", "/_*");
+    }
+
+    @Override
+    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<Object> allModels) {
+        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        for (CodegenOperation op : operationList) {
+            String path = op.path;
+            String[] items = path.split("/", -1);
+            String opsPath = "";
+            int pathParamIndex = 0;
+
+            for (int i = 0; i < items.length; ++i) {
+                if (items[i].matches("^\\{(.*)\\}$")) { // wrap in {}
+                    // camelize path variable
+                    items[i] = "{" + camelize(items[i].substring(1, items[i].length() - 1), true) + "}";
+                }
+            }
+
+            op.path = StringUtils.join(items, "/");
+        }
+
+        return objs;
+    }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.PHP; }
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PlantumlDocumentationCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PlantumlDocumentationCodegen.java
index ad63034acbe..8df3f2a3c4d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PlantumlDocumentationCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PlantumlDocumentationCodegen.java
@@ -215,4 +215,7 @@ public class PlantumlDocumentationCodegen extends DefaultCodegen implements Code
         // to suppress the warning message
         return input;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PowerShellClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PowerShellClientCodegen.java
index f55734fafa2..fee739c2c82 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PowerShellClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PowerShellClientCodegen.java
@@ -1230,7 +1230,11 @@ public class PowerShellClientCodegen extends DefaultCodegen implements CodegenCo
             example.append(constructExampleCode(codegenProperty.items, modelMaps, processedModelMap, requiredOnly));
         } else if (codegenProperty.isMap) {
             example.append("@{ key_example = ");
-            example.append(constructExampleCode(codegenProperty.items, modelMaps, processedModelMap, requiredOnly));
+            if (codegenProperty.items != null) {
+                example.append(constructExampleCode(codegenProperty.items, modelMaps, processedModelMap, requiredOnly));
+            } else {
+                example.append(" ... ");
+            }
             example.append(" }");
         } else if (codegenProperty.isEnum || (codegenProperty.allowableValues != null && !codegenProperty.allowableValues.isEmpty())) {
             example.append(constructEnumExample(codegenProperty.allowableValues));
@@ -1534,4 +1538,7 @@ public class PowerShellClientCodegen extends DefaultCodegen implements CodegenCo
         System.out.println("# - OpenAPI Generator for PowerShell Developers      https://bit.ly/3qBWfRJ    #");
         System.out.println("################################################################################");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.POWERSHELL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ProtobufSchemaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ProtobufSchemaCodegen.java
index 777f6fc5169..769d143091d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ProtobufSchemaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ProtobufSchemaCodegen.java
@@ -603,4 +603,7 @@ public class ProtobufSchemaCodegen extends DefaultCodegen implements CodegenConf
         }
         return containsVar;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.PROTOBUF; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAiohttpConnexionServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAiohttpConnexionServerCodegen.java
index c5474260b62..d497c8a0e01 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAiohttpConnexionServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAiohttpConnexionServerCodegen.java
@@ -75,4 +75,7 @@ public class PythonAiohttpConnexionServerCodegen extends AbstractPythonConnexion
         supportingFiles.add(new SupportingFile("tox.mustache", "", "tox.ini"));
         supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
     }
+
+    @Override
+    public String generatorLanguageVersion() { return "3.5.2+"; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonBluePlanetServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonBluePlanetServerCodegen.java
index 964b942e864..fd381e52974 100755
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonBluePlanetServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonBluePlanetServerCodegen.java
@@ -265,4 +265,6 @@ public class PythonBluePlanetServerCodegen extends AbstractPythonConnexionServer
         return outputFolder + File.separator + apiPackage().replace('.', File.separatorChar);
     }
 
+    @Override
+    public String generatorLanguageVersion() { return "2.7+ and 3.5.2+"; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
index 6273a453183..2d1b6253612 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
@@ -123,7 +123,7 @@ public class PythonClientCodegen extends PythonLegacyClientCodegen {
         cliOptions.add(disallowAdditionalPropertiesIfNotPresentOpt);
 
         generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
-                .stability(Stability.EXPERIMENTAL)
+                .stability(Stability.STABLE)
                 .build();
     }
 
@@ -1501,4 +1501,7 @@ public class PythonClientCodegen extends PythonLegacyClientCodegen {
         }
         return modelNameToSchemaCache;
     }
+
+    @Override
+    public String generatorLanguageVersion() { return ">=3.6"; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonExperimentalClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonExperimentalClientCodegen.java
new file mode 100644
index 00000000000..5424080f0d7
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonExperimentalClientCodegen.java
@@ -0,0 +1,2096 @@
+/*
+ * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.openapitools.codegen.languages;
+
+import com.github.curiousoddman.rgxgen.RgxGen;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+import io.swagger.v3.oas.models.servers.Server;
+import io.swagger.v3.oas.models.tags.Tag;
+import org.openapitools.codegen.api.TemplatePathLocator;
+import org.openapitools.codegen.ignore.CodegenIgnoreProcessor;
+import org.openapitools.codegen.templating.*;
+import io.swagger.v3.core.util.Json;
+import io.swagger.v3.oas.models.media.*;
+import io.swagger.v3.oas.models.parameters.Parameter;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import org.apache.commons.lang3.StringUtils;
+import org.openapitools.codegen.*;
+import org.openapitools.codegen.CodegenDiscriminator.MappedModel;
+import org.openapitools.codegen.api.TemplatingEngineAdapter;
+import org.openapitools.codegen.meta.GeneratorMetadata;
+import org.openapitools.codegen.meta.Stability;
+import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.utils.ModelUtils;
+import org.openapitools.codegen.utils.ProcessUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.openapitools.codegen.api.TemplateProcessor;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import static org.openapitools.codegen.utils.OnceLogger.once;
+import static org.openapitools.codegen.utils.StringUtils.underscore;
+
+public class PythonExperimentalClientCodegen extends AbstractPythonCodegen {
+    private final Logger LOGGER = LoggerFactory.getLogger(PythonExperimentalClientCodegen.class);
+
+    public static final String PACKAGE_URL = "packageUrl";
+    public static final String DEFAULT_LIBRARY = "urllib3";
+    // nose is a python testing framework, we use pytest if USE_NOSE is unset
+    public static final String USE_NOSE = "useNose";
+    public static final String RECURSION_LIMIT = "recursionLimit";
+
+    protected String packageUrl;
+    protected String apiDocPath = "docs/";
+    protected String modelDocPath = "docs/";
+    protected boolean useNose = Boolean.FALSE;
+
+    protected Map<Character, String> regexModifiers;
+
+    private String testFolder;
+
+    // A cache to efficiently lookup a Schema instance based on the return value of `toModelName()`.
+    private Map<String, Schema> modelNameToSchemaCache;
+    private DateTimeFormatter iso8601Date = DateTimeFormatter.ISO_DATE;
+    private DateTimeFormatter iso8601DateTime = DateTimeFormatter.ISO_DATE_TIME;
+
+    private String templateExtension;
+    protected CodegenIgnoreProcessor ignoreProcessor;
+    protected TemplateProcessor templateProcessor = null;
+
+    public PythonExperimentalClientCodegen() {
+        super();
+
+        modifyFeatureSet(features -> features
+                .includeSchemaSupportFeatures(
+                        SchemaSupportFeature.Simple,
+                        SchemaSupportFeature.Composite,
+                        SchemaSupportFeature.Polymorphism,
+                        SchemaSupportFeature.Union
+                )
+                .includeDocumentationFeatures(DocumentationFeature.Readme)
+                .wireFormatFeatures(EnumSet.of(WireFormatFeature.JSON, WireFormatFeature.Custom))
+                .securityFeatures(EnumSet.of(
+                        SecurityFeature.BasicAuth,
+                        SecurityFeature.BearerToken,
+                        SecurityFeature.ApiKey,
+                        SecurityFeature.OAuth2_Implicit
+                ))
+                .includeGlobalFeatures(
+                        GlobalFeature.ParameterizedServer,
+                        GlobalFeature.ParameterStyling
+                )
+                .excludeGlobalFeatures(
+                        GlobalFeature.XMLStructureDefinitions,
+                        GlobalFeature.Callbacks,
+                        GlobalFeature.LinkObjects
+                )
+                .excludeSchemaSupportFeatures(
+                )
+                .excludeParameterFeatures(
+                        ParameterFeature.Cookie
+                )
+        );
+
+        // clear import mapping (from default generator) as python does not use it
+        // at the moment
+        importMapping.clear();
+
+        modelPackage = "model";
+        apiPackage = "api";
+        outputFolder = "generated-code" + File.separatorChar + "python";
+
+        embeddedTemplateDir = templateDir = "python-experimental";
+
+        testFolder = "test";
+
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
+        // from https://docs.python.org/3/reference/lexical_analysis.html#keywords
+        setReservedWordsLowerCase(
+                Arrays.asList(
+                        // local variable name used in API methods (endpoints)
+                        "all_params", "resource_path", "path_params", "query_params",
+                        "header_params", "form_params", "local_var_files", "body_params", "auth_settings",
+                        // @property
+                        "property",
+                        // python reserved words
+                        "and", "del", "from", "not", "while", "as", "elif", "global", "or", "with",
+                        "assert", "else", "if", "pass", "yield", "break", "except", "import",
+                        "print", "class", "exec", "in", "raise", "continue", "finally", "is",
+                        "return", "def", "for", "lambda", "try", "self", "nonlocal", "None", "True",
+                        "False", "async", "await",
+                        // types
+                        "float", "int", "str", "bool", "none_type", "dict", "frozendict", "list", "tuple", "file_type"));
+
+        regexModifiers = new HashMap<Character, String>();
+        regexModifiers.put('i', "IGNORECASE");
+        regexModifiers.put('l', "LOCALE");
+        regexModifiers.put('m', "MULTILINE");
+        regexModifiers.put('s', "DOTALL");
+        regexModifiers.put('u', "UNICODE");
+        regexModifiers.put('x', "VERBOSE");
+
+        cliOptions.clear();
+        cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "python package name (convention: snake_case).")
+                .defaultValue("openapi_client"));
+        cliOptions.add(new CliOption(CodegenConstants.PROJECT_NAME, "python project name in setup.py (e.g. petstore-api)."));
+        cliOptions.add(new CliOption(CodegenConstants.PACKAGE_VERSION, "python package version.")
+                .defaultValue("1.0.0"));
+        cliOptions.add(new CliOption(PACKAGE_URL, "python package URL."));
+        // this generator does not use SORT_PARAMS_BY_REQUIRED_FLAG
+        // this generator uses the following order for endpoint paramters and model properties
+        // required params
+        // optional params which are set to unset as their default for method signatures only
+        // optional params as **kwargs
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
+                .defaultValue(Boolean.TRUE.toString()));
+        cliOptions.add(new CliOption(CodegenConstants.SOURCECODEONLY_GENERATION, CodegenConstants.SOURCECODEONLY_GENERATION_DESC)
+                .defaultValue(Boolean.FALSE.toString()));
+        cliOptions.add(CliOption.newBoolean(USE_NOSE, "use the nose test framework").
+                defaultValue(Boolean.FALSE.toString()));
+        cliOptions.add(new CliOption(RECURSION_LIMIT, "Set the recursion limit. If not set, use the system default value."));
+
+        supportedLibraries.put("urllib3", "urllib3-based client");
+        supportedLibraries.put("asyncio", "Asyncio-based client (python 3.5+)");
+        supportedLibraries.put("tornado", "tornado-based client");
+        CliOption libraryOption = new CliOption(CodegenConstants.LIBRARY, "library template (sub-template) to use: asyncio, tornado, urllib3");
+        libraryOption.setDefault(DEFAULT_LIBRARY);
+        cliOptions.add(libraryOption);
+        setLibrary(DEFAULT_LIBRARY);
+
+        // Composed schemas can have the 'additionalProperties' keyword, as specified in JSON schema.
+        // In principle, this should be enabled by default for all code generators. However due to limitations
+        // in other code generators, support needs to be enabled on a case-by-case basis.
+        supportsAdditionalPropertiesWithComposedSchema = true;
+
+        // When the 'additionalProperties' keyword is not present in a OAS schema, allow
+        // undeclared properties. This is compliant with the JSON schema specification.
+        this.setDisallowAdditionalPropertiesIfNotPresent(false);
+
+        // this may set datatype right for additional properties
+        instantiationTypes.put("map", "dict");
+
+        languageSpecificPrimitives.add("file_type");
+        languageSpecificPrimitives.add("none_type");
+        typeMapping.put("decimal", "str");
+
+        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
+                .stability(Stability.EXPERIMENTAL)
+                .build();
+    }
+
+    @Override
+    public void processOpts() {
+        this.setLegacyDiscriminatorBehavior(false);
+
+        super.processOpts();
+
+        TemplatingEngineAdapter te = getTemplatingEngine();
+        if (te instanceof HandlebarsEngineAdapter) {
+            HandlebarsEngineAdapter hea = (HandlebarsEngineAdapter) te;
+            hea.infiniteLoops(true);
+            hea.setPrettyPrint(true);
+        } else {
+            throw new RuntimeException("Only the HandlebarsEngineAdapter is supported for this generator");
+        }
+
+        TemplatePathLocator commonTemplateLocator = new CommonTemplateContentLocator();
+        TemplatePathLocator generatorTemplateLocator = new GeneratorTemplateContentLocator(this);
+        TemplateManagerOptions templateManagerOptions = new TemplateManagerOptions(this.isEnableMinimalUpdate(),this.isSkipOverwrite());
+        templateProcessor = new TemplateManager(
+                templateManagerOptions,
+                te,
+                new TemplatePathLocator[]{generatorTemplateLocator, commonTemplateLocator}
+        );
+        templateExtension = te.getIdentifier();
+
+        String ignoreFileLocation = this.getIgnoreFilePathOverride();
+        if (ignoreFileLocation != null) {
+            final File ignoreFile = new File(ignoreFileLocation);
+            if (ignoreFile.exists() && ignoreFile.canRead()) {
+                this.ignoreProcessor = new CodegenIgnoreProcessor(ignoreFile);
+            } else {
+                LOGGER.warn("Ignore file specified at {} is not valid. This will fall back to an existing ignore file if present in the output directory.", ignoreFileLocation);
+            }
+        }
+
+        if (this.ignoreProcessor == null) {
+            this.ignoreProcessor = new CodegenIgnoreProcessor(this.getOutputDir());
+        }
+
+        modelTemplateFiles.put("model." + templateExtension, ".py");
+            apiTemplateFiles.put("api." + templateExtension, ".py");
+        modelTestTemplateFiles.put("model_test." + templateExtension, ".py");
+        apiTestTemplateFiles.put("api_test." + templateExtension, ".py");
+        modelDocTemplateFiles.put("model_doc." + templateExtension, ".md");
+        apiDocTemplateFiles.put("api_doc." + templateExtension, ".md");
+
+        if (StringUtils.isEmpty(System.getenv("PYTHON_POST_PROCESS_FILE"))) {
+            LOGGER.info("Environment variable PYTHON_POST_PROCESS_FILE not defined so the Python code may not be properly formatted. To define it, try 'export PYTHON_POST_PROCESS_FILE=\"/usr/local/bin/yapf -i\"' (Linux/Mac)");
+            LOGGER.info("NOTE: To enable file post-processing, 'enablePostProcessFile' must be set to `true` (--enable-post-process-file for CLI).");
+        }
+
+        Boolean excludeTests = false;
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
+            setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.PROJECT_NAME)) {
+            setProjectName((String) additionalProperties.get(CodegenConstants.PROJECT_NAME));
+        } else {
+            // default: set project based on package name
+            // e.g. petstore_api (package name) => petstore-api (project name)
+            setProjectName(packageName.replaceAll("_", "-"));
+        }
+
+        if (additionalProperties.containsKey(CodegenConstants.PACKAGE_VERSION)) {
+            setPackageVersion((String) additionalProperties.get(CodegenConstants.PACKAGE_VERSION));
+        }
+
+        additionalProperties.put(CodegenConstants.PROJECT_NAME, projectName);
+        additionalProperties.put(CodegenConstants.PACKAGE_NAME, packageName);
+        additionalProperties.put(CodegenConstants.PACKAGE_VERSION, packageVersion);
+
+        if (additionalProperties.containsKey(CodegenConstants.EXCLUDE_TESTS)) {
+            excludeTests = Boolean.valueOf(additionalProperties.get(CodegenConstants.EXCLUDE_TESTS).toString());
+        }
+
+        Boolean generateSourceCodeOnly = false;
+        if (additionalProperties.containsKey(CodegenConstants.SOURCECODEONLY_GENERATION)) {
+            generateSourceCodeOnly = Boolean.valueOf(additionalProperties.get(CodegenConstants.SOURCECODEONLY_GENERATION).toString());
+        }
+
+        if (generateSourceCodeOnly) {
+            // tests in <package>/test
+            testFolder = packagePath() + File.separatorChar + testFolder;
+            // api/model docs in <package>/docs
+            apiDocPath = packagePath() + File.separatorChar + apiDocPath;
+            modelDocPath = packagePath() + File.separatorChar + modelDocPath;
+        }
+        // make api and model doc path available in templates
+        additionalProperties.put("apiDocPath", apiDocPath);
+        additionalProperties.put("modelDocPath", modelDocPath);
+
+        if (additionalProperties.containsKey(PACKAGE_URL)) {
+            setPackageUrl((String) additionalProperties.get(PACKAGE_URL));
+        }
+
+        if (additionalProperties.containsKey(USE_NOSE)) {
+            setUseNose((String) additionalProperties.get(USE_NOSE));
+        }
+
+        // check to see if setRecursionLimit is set and whether it's an integer
+        if (additionalProperties.containsKey(RECURSION_LIMIT)) {
+            try {
+                Integer.parseInt((String) additionalProperties.get(RECURSION_LIMIT));
+            } catch (NumberFormatException | NullPointerException e) {
+                throw new IllegalArgumentException("recursionLimit must be an integer, e.g. 2000.");
+            }
+        }
+
+        String readmePath = "README.md";
+        String readmeTemplate = "README." + templateExtension;
+        if (generateSourceCodeOnly) {
+            readmePath = packagePath() + "_" + readmePath;
+            readmeTemplate = "README_onlypackage." + templateExtension;
+        }
+        supportingFiles.add(new SupportingFile(readmeTemplate, "", readmePath));
+
+        if (!generateSourceCodeOnly) {
+            supportingFiles.add(new SupportingFile("tox." + templateExtension, "", "tox.ini"));
+            supportingFiles.add(new SupportingFile("test-requirements." + templateExtension, "", "test-requirements.txt"));
+            supportingFiles.add(new SupportingFile("requirements." + templateExtension, "", "requirements.txt"));
+            supportingFiles.add(new SupportingFile("setup_cfg." + templateExtension, "", "setup.cfg"));
+
+            supportingFiles.add(new SupportingFile("git_push.sh." + templateExtension, "", "git_push.sh"));
+            supportingFiles.add(new SupportingFile("gitignore." + templateExtension, "", ".gitignore"));
+            supportingFiles.add(new SupportingFile("travis." + templateExtension, "", ".travis.yml"));
+            supportingFiles.add(new SupportingFile("gitlab-ci." + templateExtension, "", ".gitlab-ci.yml"));
+            supportingFiles.add(new SupportingFile("setup." + templateExtension, "", "setup.py"));
+        }
+        supportingFiles.add(new SupportingFile("configuration." + templateExtension, packagePath(), "configuration.py"));
+        supportingFiles.add(new SupportingFile("__init__package." + templateExtension, packagePath(), "__init__.py"));
+
+        // If the package name consists of dots(openapi.client), then we need to create the directory structure like openapi/client with __init__ files.
+        String[] packageNameSplits = packageName.split("\\.");
+        String currentPackagePath = "";
+        for (int i = 0; i < packageNameSplits.length - 1; i++) {
+            if (i > 0) {
+                currentPackagePath = currentPackagePath + File.separatorChar;
+            }
+            currentPackagePath = currentPackagePath + packageNameSplits[i];
+            supportingFiles.add(new SupportingFile("__init__." + templateExtension, currentPackagePath, "__init__.py"));
+        }
+
+        supportingFiles.add(new SupportingFile("exceptions." + templateExtension, packagePath(), "exceptions.py"));
+
+        if (Boolean.FALSE.equals(excludeTests)) {
+            supportingFiles.add(new SupportingFile("__init__." + templateExtension, testFolder, "__init__.py"));
+        }
+
+        supportingFiles.add(new SupportingFile("api_client." + templateExtension, packagePath(), "api_client.py"));
+
+        if ("asyncio".equals(getLibrary())) {
+            supportingFiles.add(new SupportingFile("asyncio/rest." + templateExtension, packagePath(), "rest.py"));
+            additionalProperties.put("asyncio", "true");
+        } else if ("tornado".equals(getLibrary())) {
+            supportingFiles.add(new SupportingFile("tornado/rest." + templateExtension, packagePath(), "rest.py"));
+            additionalProperties.put("tornado", "true");
+        } else {
+            supportingFiles.add(new SupportingFile("rest." + templateExtension, packagePath(), "rest.py"));
+        }
+
+        supportingFiles.add(new SupportingFile("schemas." + templateExtension, packagePath(), "schemas.py"));
+
+        // add the models and apis folders
+        supportingFiles.add(new SupportingFile("__init__models." + templateExtension, packagePath() + File.separatorChar + "models", "__init__.py"));
+        supportingFiles.add(new SupportingFile("__init__model." + templateExtension, packagePath() + File.separatorChar + modelPackage, "__init__.py"));
+        supportingFiles.add(new SupportingFile("__init__apis." + templateExtension, packagePath() + File.separatorChar + "apis", "__init__.py"));
+        supportingFiles.add(new SupportingFile("__init__api." + templateExtension, packagePath() + File.separatorChar + apiPackage, "__init__.py"));
+        // Generate the 'signing.py' module, but only if the 'HTTP signature' security scheme is specified in the OAS.
+        Map<String, SecurityScheme> securitySchemeMap = openAPI != null ?
+                (openAPI.getComponents() != null ? openAPI.getComponents().getSecuritySchemes() : null) : null;
+        List<CodegenSecurity> authMethods = fromSecurity(securitySchemeMap);
+        if (ProcessUtils.hasHttpSignatureMethods(authMethods)) {
+            supportingFiles.add(new SupportingFile("signing." + templateExtension, packagePath(), "signing.py"));
+        }
+
+        // default this to true so the python ModelSimple models will be generated
+        ModelUtils.setGenerateAliasAsModel(true);
+        LOGGER.info(CodegenConstants.GENERATE_ALIAS_AS_MODEL + " is hard coded to true in this generator. Alias models will only be generated if they contain validations or enums");
+
+        // check library option to ensure only urllib3 is supported
+        if (!DEFAULT_LIBRARY.equals(getLibrary())) {
+            throw new RuntimeException("Only the `urllib3` library is supported in the refactored `python` client generator at the moment. Please fall back to `python-legacy` client generator for the time being. We welcome contributions to add back `asyncio`, `tornado` support to the `python` client generator.");
+        }
+    }
+
+    public String endpointFilename(String templateName, String tag, String operationId) {
+        return apiFileFolder() + File.separator + toApiFilename(tag) + "_endpoints" + File.separator + operationId + ".py";
+    }
+
+    protected File processTemplateToFile(Map<String, Object> templateData, String templateName, String outputFilename, boolean shouldGenerate, String skippedByOption) throws IOException {
+        String adjustedOutputFilename = outputFilename.replaceAll("//", "/").replace('/', File.separatorChar);
+        File target = new File(adjustedOutputFilename);
+        if (ignoreProcessor.allowsFile(target)) {
+            if (shouldGenerate) {
+                Path outDir = java.nio.file.Paths.get(this.getOutputDir()).toAbsolutePath();
+                Path absoluteTarget = target.toPath().toAbsolutePath();
+                if (!absoluteTarget.startsWith(outDir)) {
+                    throw new RuntimeException(String.format(Locale.ROOT, "Target files must be generated within the output directory; absoluteTarget=%s outDir=%s", absoluteTarget, outDir));
+                }
+                return this.templateProcessor.write(templateData,templateName, target);
+            } else {
+                this.templateProcessor.skip(target.toPath(), String.format(Locale.ROOT, "Skipped by %s options supplied by user.", skippedByOption));
+                return null;
+            }
+        } else {
+            this.templateProcessor.ignore(target.toPath(), "Ignored by rule in ignore file.");
+            return null;
+        }
+    }
+
+    /*
+    I made this method because endpoint parameters not contain a lot of needed metadata
+    It is very verbose to write all of this info into the api template
+    This ingests all operations under a tag in the objs input and writes out one file for each endpoint
+     */
+    protected void generateEndpoints(Map<String, Object> objs) {
+        if (!(Boolean) additionalProperties.get(CodegenConstants.GENERATE_APIS)) {
+            return;
+        }
+        HashMap<String, Object> operations = (HashMap<String, Object>) objs.get("operations");
+        ArrayList<CodegenOperation> codegenOperations = (ArrayList<CodegenOperation>) operations.get("operation");
+        for (CodegenOperation co: codegenOperations) {
+            for (Tag tag: co.tags) {
+                String tagName = tag.getName();
+                String pythonTagName = toVarName(tagName);
+                Map<String, Object> operationMap = new HashMap<>();
+                operationMap.put("operation", co);
+                operationMap.put("imports", co.imports);
+                operationMap.put("packageName", packageName);
+
+                String templateName = "endpoint.handlebars";
+                String filename = endpointFilename(templateName, pythonTagName, co.operationId);
+                try {
+                    File written = processTemplateToFile(operationMap, templateName, filename, true, CodegenConstants.APIS);
+                } catch (IOException e) {
+                    LOGGER.error("Error when writing template file {}", e.toString());
+                }
+            }
+        }
+    }
+
+    /*
+    We have a custom version of this method so for composed schemas and object schemas we add properties only if they
+    are defined in that schema (x.properties). We do this because validation should be done independently in each schema
+    If properties are hosted into composed schemas, they can collide or incorrectly list themself as required when
+    they are not.
+     */
+    @Override
+    protected void addVarsRequiredVarsAdditionalProps(Schema schema, IJsonSchemaValidationProperties property){
+        setAddProps(schema, property);
+        if (schema instanceof ComposedSchema && supportsAdditionalPropertiesWithComposedSchema) {
+            // if schema has properties outside of allOf/oneOf/anyOf also add them
+            ComposedSchema cs = (ComposedSchema) schema;
+            if (schema.getProperties() != null && !schema.getProperties().isEmpty()) {
+                if (cs.getOneOf() != null && !cs.getOneOf().isEmpty()) {
+                    LOGGER.warn("'oneOf' is intended to include only the additional optional OAS extension discriminator object. " +
+                            "For more details, see https://json-schema.org/draft/2019-09/json-schema-core.html#rfc.section.9.2.1.3 and the OAS section on 'Composition and Inheritance'.");
+                }
+                HashSet<String> requiredVars = new HashSet<>();
+                if (schema.getRequired() != null) {
+                    requiredVars.addAll(schema.getRequired());
+                }
+                addVars(property, property.getVars(), schema.getProperties(), requiredVars);
+            }
+            return;
+        } else if (ModelUtils.isTypeObjectSchema(schema)) {
+            HashSet<String> requiredVars = new HashSet<>();
+            if (schema.getRequired() != null) {
+                requiredVars.addAll(schema.getRequired());
+                property.setHasRequired(true);
+            }
+            addVars(property, property.getVars(), schema.getProperties(), requiredVars);
+            if (property.getVars() != null && !property.getVars().isEmpty()) {
+                property.setHasVars(true);
+            }
+        }
+        return;
+    }
+
+    /**
+     * Configures a friendly name for the generator.  This will be used by the
+     * generator to select the library with the -g flag.
+     *
+     * @return the friendly name for the generator
+     */
+    @Override
+    public String getName() {
+        return "python-experimental";
+    }
+
+    @Override
+    public String getHelp() {
+        String newLine = System.getProperty("line.separator");
+        return String.join("<br />",
+                "Generates a Python client library",
+                "",
+                "Features in this generator:",
+                "- type hints on endpoints and model creation",
+                "- model parameter names use the spec defined keys and cases",
+                "- robust composition (oneOf/anyOf/allOf) where paload data is stored in one instance only",
+                "- endpoint parameter names use the spec defined keys and cases",
+                "- inline schemas are supported at any location including composition",
+                "- multiple content types supported in request body and response bodies",
+                "- run time type checking",
+                "- Sending/receiving decimals as strings supported with type:string format: number -> DecimalSchema",
+                "- quicker load time for python modules (a single endpoint can be imported and used without loading others)",
+                "- all instances of schemas dynamically inherit from all matching schemas so one can use isinstance to check if validation passed",
+                "- composed schemas with type constraints supported (type:object + oneOf/anyOf/allOf)",
+                "- schemas are not coerced/cast. For example string + date are both stored as string, and there is a date accessor",
+                "    - Exceptions: int/float is stored as Decimal, When receiving data from headers it will start as str and may need to be cast for example to int");
+    }
+
+    @Override
+    public Schema unaliasSchema(Schema schema, Map<String, String> usedImportMappings) {
+        Map<String, Schema> allSchemas = ModelUtils.getSchemas(openAPI);
+        if (allSchemas == null || allSchemas.isEmpty()) {
+            // skip the warning as the spec can have no model defined
+            //LOGGER.warn("allSchemas cannot be null/empty in unaliasSchema. Returned 'schema'");
+            return schema;
+        }
+
+        if (schema != null && StringUtils.isNotEmpty(schema.get$ref())) {
+            String simpleRef = ModelUtils.getSimpleRef(schema.get$ref());
+            if (usedImportMappings.containsKey(simpleRef)) {
+                LOGGER.debug("Schema unaliasing of {} omitted because aliased class is to be mapped to {}", simpleRef, usedImportMappings.get(simpleRef));
+                return schema;
+            }
+            Schema ref = allSchemas.get(simpleRef);
+            if (ref == null) {
+                once(LOGGER).warn("{} is not defined", schema.get$ref());
+                return schema;
+            } else if (ref.getEnum() != null && !ref.getEnum().isEmpty()) {
+                // top-level enum class
+                return schema;
+            } else if (ModelUtils.isArraySchema(ref)) {
+                if (ModelUtils.isGenerateAliasAsModel(ref)) {
+                    return schema; // generate a model extending array
+                } else {
+                    return unaliasSchema(allSchemas.get(ModelUtils.getSimpleRef(schema.get$ref())),
+                            usedImportMappings);
+                }
+            } else if (ModelUtils.isComposedSchema(ref)) {
+                return schema;
+            } else if (ModelUtils.isMapSchema(ref)) {
+                if (ref.getProperties() != null && !ref.getProperties().isEmpty()) // has at least one property
+                    return schema; // treat it as model
+                else {
+                    if (ModelUtils.isGenerateAliasAsModel(ref)) {
+                        return schema; // generate a model extending map
+                    } else {
+                        // treat it as a typical map
+                        return unaliasSchema(allSchemas.get(ModelUtils.getSimpleRef(schema.get$ref())),
+                                usedImportMappings);
+                    }
+                }
+            } else if (ModelUtils.isObjectSchema(ref)) { // model
+                if (ref.getProperties() != null && !ref.getProperties().isEmpty()) { // has at least one property
+                    return schema;
+                } else {
+                    // free form object (type: object)
+                    if (ModelUtils.hasValidation(ref)) {
+                        return schema;
+                    } else if (getAllOfDescendants(simpleRef, openAPI).size() > 0) {
+                        return schema;
+                    }
+                    return unaliasSchema(allSchemas.get(ModelUtils.getSimpleRef(schema.get$ref())),
+                            usedImportMappings);
+                }
+            } else if (ModelUtils.hasValidation(ref)) {
+                // non object non array non map schemas that have validations
+                // are returned so we can generate those schemas as models
+                // we do this to:
+                // - preserve the validations in that model class in python
+                // - use those validations when we use this schema in composed oneOf schemas
+                return schema;
+            } else if (Boolean.TRUE.equals(ref.getNullable()) && ref.getEnum() == null) {
+                // non enum primitive with nullable True
+                // we make these models so instances of this will be subclasses of this model
+                return schema;
+            } else {
+                return unaliasSchema(allSchemas.get(ModelUtils.getSimpleRef(schema.get$ref())), usedImportMappings);
+            }
+        }
+        return schema;
+    }
+
+    public String pythonDate(Object dateValue) {
+        String strValue = null;
+        if (dateValue instanceof OffsetDateTime) {
+            OffsetDateTime date = null;
+            try {
+                date = (OffsetDateTime) dateValue;
+            } catch (ClassCastException e) {
+                LOGGER.warn("Invalid `date` format for value {}", dateValue.toString());
+                date = ((Date) dateValue).toInstant().atOffset(ZoneOffset.UTC);
+            }
+            strValue = date.format(iso8601Date);
+        } else {
+            strValue = dateValue.toString();
+        }
+        return "isoparse('" + strValue + "').date()";
+    }
+
+    public String pythonDateTime(Object dateTimeValue) {
+        String strValue = null;
+        if (dateTimeValue instanceof OffsetDateTime) {
+            OffsetDateTime dateTime = null;
+            try {
+                dateTime = (OffsetDateTime) dateTimeValue;
+            } catch (ClassCastException e) {
+                LOGGER.warn("Invalid `date-time` format for value {}", dateTimeValue.toString());
+                dateTime = ((Date) dateTimeValue).toInstant().atOffset(ZoneOffset.UTC);
+            }
+            strValue = dateTime.format(iso8601DateTime);
+        } else {
+            strValue = dateTimeValue.toString();
+        }
+        return "isoparse('" + strValue + "')";
+    }
+
+    /**
+     * Return the default value of the property
+     *
+     * @param p OpenAPI property object
+     * @return string presentation of the default value of the property
+     */
+    @Override
+    public String toDefaultValue(Schema p) {
+        Object defaultObject = null;
+        if (p.getDefault() != null) {
+            defaultObject = p.getDefault();
+        }
+
+        if (defaultObject == null) {
+            return null;
+        }
+
+        String defaultValue = defaultObject.toString();
+        if (ModelUtils.isDateSchema(p)) {
+            defaultValue = pythonDate(defaultObject);
+        } else if (ModelUtils.isDateTimeSchema(p)) {
+            defaultValue = pythonDateTime(defaultObject);
+        } else if (ModelUtils.isStringSchema(p) && !ModelUtils.isByteArraySchema(p) && !ModelUtils.isBinarySchema(p) && !ModelUtils.isFileSchema(p) && !ModelUtils.isUUIDSchema(p) && !ModelUtils.isEmailSchema(p)) {
+            defaultValue = ensureQuotes(defaultValue);
+        } else if (ModelUtils.isBooleanSchema(p)) {
+            if (Boolean.valueOf(defaultValue) == false) {
+                defaultValue = "False";
+            } else {
+                defaultValue = "True";
+            }
+        }
+        return defaultValue;
+    }
+
+    @Override
+    public String toModelImport(String name) {
+        // name looks like Cat
+        return "from " + packagePath() + "." +  modelPackage() + "." + toModelFilename(name) + " import " + toModelName(name);
+    }
+
+    @Override
+    @SuppressWarnings("static-method")
+    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<Object> allModels) {
+        // fix the imports that each model has, add the module reference to the model
+        // loops through imports and converts them all
+        // from 'Pet' to 'from petstore_api.model.pet import Pet'
+
+        HashMap<String, Object> val = (HashMap<String, Object>) objs.get("operations");
+        ArrayList<CodegenOperation> operations = (ArrayList<CodegenOperation>) val.get("operation");
+        ArrayList<HashMap<String, String>> imports = (ArrayList<HashMap<String, String>>) objs.get("imports");
+        for (CodegenOperation operation : operations) {
+            if (operation.imports.size() == 0) {
+                continue;
+            }
+            String[] modelNames = operation.imports.toArray(new String[0]);
+            operation.imports.clear();
+            for (String modelName : modelNames) {
+                operation.imports.add(toModelImport(modelName));
+            }
+        }
+        generateEndpoints(objs);
+        return objs;
+    }
+
+    /***
+     * Override with special post-processing for all models.
+     * we have a custom version of this method to:
+     * - remove any primitive models that do not contain validations
+     *      these models are unaliased as inline definitions wherever the spec has them as refs
+     *      this means that the generated client does not use these models
+     *      because they are not used we do not write them
+     * - fix the model imports, go from model name to the full import string with toModelImport + globalImportFixer
+     *
+     * @param objs a map going from the model name to a object hoding the model info
+     * @return the updated objs
+     */
+    @Override
+    public Map<String, Object> postProcessAllModels(Map<String, Object> objs) {
+        super.postProcessAllModels(objs);
+
+        Map<String, Schema> allDefinitions = ModelUtils.getSchemas(this.openAPI);
+        for (String schemaName : allDefinitions.keySet()) {
+            Schema refSchema = new Schema().$ref("#/components/schemas/" + schemaName);
+            Schema unaliasedSchema = unaliasSchema(refSchema, importMapping);
+            String modelName = toModelName(schemaName);
+            if (unaliasedSchema.get$ref() == null) {
+                continue;
+            } else {
+                HashMap<String, Object> objModel = (HashMap<String, Object>) objs.get(modelName);
+                if (objModel != null) { // to avoid form parameter's models that are not generated (skipFormModel=true)
+                    List<Map<String, Object>> models = (List<Map<String, Object>>) objModel.get("models");
+                    for (Map<String, Object> model : models) {
+                        CodegenModel cm = (CodegenModel) model.get("model");
+                        String[] importModelNames = cm.imports.toArray(new String[0]);
+                        cm.imports.clear();
+                        for (String importModelName : importModelNames) {
+                            cm.imports.add(toModelImport(importModelName));
+                        }
+                    }
+                }
+            }
+        }
+
+        return objs;
+    }
+
+    public CodegenParameter fromParameter(Parameter parameter, Set<String> imports) {
+        CodegenParameter cp = super.fromParameter(parameter, imports);
+        switch(parameter.getStyle()) {
+            case MATRIX:
+                cp.style = "MATRIX";
+                break;
+            case LABEL:
+                cp.style = "LABEL";
+                break;
+            case FORM:
+                cp.style = "FORM";
+                break;
+            case SIMPLE:
+                cp.style = "SIMPLE";
+                break;
+            case SPACEDELIMITED:
+                cp.style = "SPACE_DELIMITED";
+                break;
+            case PIPEDELIMITED:
+                cp.style = "PIPE_DELIMITED";
+                break;
+            case DEEPOBJECT:
+                cp.style = "DEEP_OBJECT";
+                break;
+        }
+        // clone this so we can change some properties on it
+        CodegenProperty schemaProp = cp.getSchema().clone();
+        // parameters may have valid python names like some_val or invalid ones like Content-Type
+        // we always set nameInSnakeCase to null so special handling will not be done for these names
+        // invalid python names will be handled in python by using a TypedDict which will allow us to have a type hint
+        // for keys that cannot be variable names to the schema baseName
+        if (schemaProp != null) {
+            schemaProp.nameInSnakeCase = null;
+            schemaProp.baseName = toModelName(cp.baseName) + "Schema";
+            cp.setSchema(schemaProp);
+        }
+        return cp;
+    }
+
+    private boolean isValidPythonVarOrClassName(String name) {
+        return name.matches("^[_a-zA-Z][_a-zA-Z0-9]*$");
+    }
+
+
+    /**
+     * Convert OAS Property object to Codegen Property object
+     * We have a custom version of this method to always set allowableValues.enumVars on all enum variables
+     * Together with unaliasSchema this sets primitive types with validations as models
+     * This method is used by fromResponse
+     *
+     * @param name name of the property
+     * @param p    OAS property object
+     * @return Codegen Property object
+     */
+    @Override
+    public CodegenProperty fromProperty(String name, Schema p) {
+        CodegenProperty cp = super.fromProperty(name, p);
+        if (cp.isAnyType && cp.isNullable) {
+            cp.isNullable = false;
+        }
+        if (cp.isNullable && cp.complexType == null) {
+            cp.setIsNull(true);
+            cp.isNullable = false;
+            cp.setHasMultipleTypes(true);
+        }
+        postProcessPattern(cp.pattern, cp.vendorExtensions);
+        // if we have a property that has a difficult name, either:
+        // 1. name is reserved, like class int float
+        // 2. name is invalid in python like '3rd' or 'Content-Type'
+        // set cp.nameInSnakeCase to a value so we can tell that we are in this use case
+        // we handle this in the schema templates
+        // templates use its presence to handle these badly named variables / keys
+        if ((isReservedWord(name) || !isValidPythonVarOrClassName(name)) && !name.equals(cp.name)) {
+            cp.nameInSnakeCase = cp.name;
+        } else {
+            cp.nameInSnakeCase = null;
+        }
+        if (cp.isEnum) {
+            updateCodegenPropertyEnum(cp);
+        }
+        Schema unaliasedSchema = unaliasSchema(p, importMapping);
+        if (cp.isPrimitiveType && unaliasedSchema.get$ref() != null) {
+            cp.complexType = cp.dataType;
+        }
+        setAdditionalPropsAndItemsVarNames(cp);
+        return cp;
+    }
+
+    private void setAdditionalPropsAndItemsVarNames(IJsonSchemaValidationProperties item) {
+        if (item.getAdditionalProperties() != null) {
+            item.getAdditionalProperties().setBaseName("_additional_properties");
+        }
+        if (item.getItems() != null) {
+            item.getItems().setBaseName("_items");
+        }
+    }
+
+    /**
+     * checks if the data should be classified as "string" in enum
+     * e.g. double in C# needs to be double-quoted (e.g. "2.8") by treating it as a string
+     * In the future, we may rename this function to "isEnumString"
+     *
+     * @param dataType data type
+     * @return true if it's a enum string
+     */
+    @Override
+    public boolean isDataTypeString(String dataType) {
+        return "str".equals(dataType);
+    }
+
+    /**
+     * Update codegen property's enum by adding "enumVars" (with name and value)
+     *
+     * @param var list of CodegenProperty
+     */
+    @Override
+    public void updateCodegenPropertyEnum(CodegenProperty var) {
+        // we have a custom version of this method to omit overwriting the defaultValue
+        Map<String, Object> allowableValues = var.allowableValues;
+
+        // handle array
+        if (var.mostInnerItems != null) {
+            allowableValues = var.mostInnerItems.allowableValues;
+        }
+
+        if (allowableValues == null) {
+            return;
+        }
+
+        List<Object> values = (List<Object>) allowableValues.get("values");
+        if (values == null) {
+            return;
+        }
+
+        String varDataType = var.mostInnerItems != null ? var.mostInnerItems.dataType : var.dataType;
+        Schema referencedSchema = getModelNameToSchemaCache().get(varDataType);
+        String dataType = (referencedSchema != null) ? getTypeDeclaration(referencedSchema) : varDataType;
+
+        // put "enumVars" map into `allowableValues", including `name` and `value`
+        List<Map<String, Object>> enumVars = buildEnumVars(values, dataType);
+
+        // if "x-enum-varnames" or "x-enum-descriptions" defined, update varnames
+        Map<String, Object> extensions = var.mostInnerItems != null ? var.mostInnerItems.getVendorExtensions() : var.getVendorExtensions();
+        if (referencedSchema != null) {
+            extensions = referencedSchema.getExtensions();
+        }
+        updateEnumVarsWithExtensions(enumVars, extensions, dataType);
+        allowableValues.put("enumVars", enumVars);
+        // overwriting defaultValue omitted from here
+    }
+
+    /***
+     * We have a custom version of this method to produce links to models when they are
+     * primitive type (not map, not array, not object) and include validations or are enums
+     *
+     * @param body requesst body
+     * @param imports import collection
+     * @param bodyParameterName body parameter name
+     * @return the resultant CodegenParameter
+     */
+    @Override
+    public CodegenParameter fromRequestBody(RequestBody body, Set<String> imports, String bodyParameterName) {
+        CodegenParameter cp = super.fromRequestBody(body, imports, bodyParameterName);
+        cp.baseName = "body";
+        Schema schema = ModelUtils.getSchemaFromRequestBody(body);
+        if (schema.get$ref() == null) {
+            return cp;
+        }
+        Schema unaliasedSchema = unaliasSchema(schema, importMapping);
+        CodegenProperty unaliasedProp = fromProperty("body", unaliasedSchema);
+        Boolean dataTypeMismatch = !cp.dataType.equals(unaliasedProp.dataType);
+        Boolean baseTypeMismatch = !cp.baseType.equals(unaliasedProp.complexType) && unaliasedProp.complexType != null;
+        if (dataTypeMismatch || baseTypeMismatch) {
+            cp.dataType = unaliasedProp.dataType;
+            cp.baseType = unaliasedProp.complexType;
+        }
+        return cp;
+    }
+
+    /***
+     * Adds the body model schema to the body parameter
+     * We have a custom version of this method so we can flip forceSimpleRef
+     * to True based upon the results of unaliasSchema
+     * With this customization, we ensure that when schemas are passed to getSchemaType
+     * - if they have ref in them they are a model
+     * - if they do not have ref in them they are not a model
+     *
+     * @param codegenParameter the body parameter
+     * @param name model schema ref key in components
+     * @param schema the model schema (not refed)
+     * @param imports collection of imports
+     * @param bodyParameterName body parameter name
+     * @param forceSimpleRef if true use a model reference
+     */
+    @Override
+    protected void addBodyModelSchema(CodegenParameter codegenParameter, String name, Schema schema, Set<String> imports, String bodyParameterName, boolean forceSimpleRef) {
+        if (name != null) {
+            Schema bodySchema = new Schema().$ref("#/components/schemas/" + name);
+            Schema unaliased = unaliasSchema(bodySchema, importMapping);
+            if (unaliased.get$ref() != null) {
+                forceSimpleRef = true;
+            }
+        }
+        super.addBodyModelSchema(codegenParameter, name, schema, imports, bodyParameterName, forceSimpleRef);
+
+    }
+
+
+    /**
+     * Return the sanitized variable name for enum
+     *
+     * @param value    enum variable name
+     * @param datatype data type
+     * @return the sanitized variable name for enum
+     */
+    public String toEnumVarName(String value, String datatype) {
+        // our enum var names are keys in a python dict, so change spaces to underscores
+        if (value.length() == 0) {
+            return "EMPTY";
+        }
+
+        String intPattern = "^[-\\+]?\\d+$";
+        String floatPattern = "^[-\\+]?\\d+\\.\\d+$";
+        Boolean intMatch = Pattern.matches(intPattern, value);
+        Boolean floatMatch = Pattern.matches(floatPattern, value);
+        if (intMatch || floatMatch) {
+            String plusSign = "^\\+.+";
+            String negSign = "^-.+";
+            if (Pattern.matches(plusSign, value)) {
+                value = value.replace("+", "POSITIVE_");
+            } else if (Pattern.matches(negSign, value)) {
+                value = value.replace("-", "NEGATIVE_");
+            } else {
+                value = "POSITIVE_" + value;
+            }
+            if (floatMatch) {
+                value = value.replace(".", "_PT_");
+            }
+            return value;
+        }
+        // Replace " " with _
+        String usedValue = value.replaceAll("\\s+", "_").toUpperCase(Locale.ROOT);
+        // strip first character if it is invalid
+        usedValue = usedValue.replaceAll("^[^_a-zA-Z]", "");
+        usedValue = usedValue.replaceAll("[^_a-zA-Z0-9]*", "");
+        if (usedValue.length() == 0) {
+            for (int i = 0; i < value.length(); i++){
+                Character c = value.charAt(i);
+                String charName = Character.getName(c.hashCode());
+                usedValue += charNameToVarName(charName);
+            }
+            // remove trailing _
+            usedValue = usedValue.replaceAll("[_]$", "");
+        }
+        return usedValue;
+    }
+
+    /**
+     * Replace - and " " with _
+     * Remove SIGN
+     *
+     * @param charName
+     * @return
+     */
+    private String charNameToVarName(String charName) {
+        String varName = charName.replaceAll("[\\-\\s]", "_");
+        varName = varName.replaceAll("SIGN", "");
+        return varName;
+    }
+
+    /**
+     * Return the enum value in the language specified format
+     * e.g. status becomes "status"
+     *
+     * @param value    enum variable name
+     * @param datatype data type
+     * @return the sanitized value for enum
+     */
+    public String toEnumValue(String value, String datatype) {
+        if ("int".equals(datatype) || "float".equals(datatype) || datatype.equals("int, float")) {
+            return value;
+        } else if ("bool".equals(datatype)) {
+            return value.substring(0, 1).toUpperCase(Locale.ROOT) + value.substring(1);
+        } else {
+            return ensureQuotes(value);
+        }
+    }
+
+    @Override
+    public void postProcessParameter(CodegenParameter p) {
+        postProcessPattern(p.pattern, p.vendorExtensions);
+        if (p.baseType != null && languageSpecificPrimitives.contains(p.baseType)) {
+            // set baseType to null so the api docs will not point to a model for languageSpecificPrimitives
+            p.baseType = null;
+        }
+    }
+
+    /**
+     * Sets the value of the 'model.parent' property in CodegenModel
+     * We have a custom version of this function so we can add the dataType on the ArrayModel
+     */
+    @Override
+    protected void addParentContainer(CodegenModel model, String name, Schema schema) {
+        super.addParentContainer(model, name, schema);
+
+        List<String> referencedModelNames = new ArrayList<String>();
+        model.dataType = getTypeString(schema, "", "", referencedModelNames);
+    }
+
+    /**
+     * Convert OAS Model object to Codegen Model object
+     * We have a custom version of this method so we can:
+     * - set the correct regex values for requiredVars + optionalVars
+     * - set model.defaultValue and model.hasRequired per the three use cases defined in this method
+     *
+     * @param name the name of the model
+     * @param sc   OAS Model object
+     * @return Codegen Model object
+     */
+    @Override
+    public CodegenModel fromModel(String name, Schema sc) {
+        CodegenModel cm = super.fromModel(name, sc);
+        Schema unaliasedSchema = unaliasSchema(sc, importMapping);
+        if (unaliasedSchema != null) {
+            if (ModelUtils.isDecimalSchema(unaliasedSchema)) { // type: string, format: number
+                cm.isString = false;
+                cm.isDecimal = true;
+            }
+        }
+
+        if (cm.isNullable) {
+            cm.setIsNull(true);
+            cm.isNullable = false;
+            cm.setHasMultipleTypes(true);
+        }
+        // TODO improve this imports addition code
+        if (cm.isArray && cm.getItems() != null && cm.getItems().complexType != null) {
+            cm.imports.add(cm.getItems().complexType);
+        }
+        if (cm.isArray && cm.getItems() != null && cm.getItems().mostInnerItems != null && cm.getItems().mostInnerItems.complexType != null) {
+            cm.imports.add(cm.getItems().mostInnerItems.complexType);
+        }
+        Boolean isNotPythonModelSimpleModel = (ModelUtils.isComposedSchema(sc) || ModelUtils.isObjectSchema(sc) || ModelUtils.isMapSchema(sc));
+        setAdditionalPropsAndItemsVarNames(cm);
+        if (isNotPythonModelSimpleModel) {
+            return cm;
+        }
+        String defaultValue = toDefaultValue(sc);
+        if (sc.getDefault() != null) {
+            cm.defaultValue = defaultValue;
+        }
+        return cm;
+    }
+
+    /**
+     * Returns the python type for the property.
+     *
+     * @param schema property schema
+     * @return string presentation of the type
+     **/
+    @SuppressWarnings("static-method")
+    @Override
+    public String getSchemaType(Schema schema) {
+        String openAPIType = getSingleSchemaType(schema);
+        if (typeMapping.containsKey(openAPIType)) {
+            String type = typeMapping.get(openAPIType);
+            return type;
+        }
+        return toModelName(openAPIType);
+    }
+
+    public String getModelName(Schema sc) {
+        if (sc.get$ref() != null) {
+            Schema unaliasedSchema = unaliasSchema(sc, importMapping);
+            if (unaliasedSchema.get$ref() != null) {
+                return toModelName(ModelUtils.getSimpleRef(sc.get$ref()));
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Return a string representation of the Python types for the specified OAS schema.
+     * Primitive types in the OAS specification are implemented in Python using the corresponding
+     * Python primitive types.
+     * Composed types (e.g. allAll, oneOf, anyOf) are represented in Python using list of types.
+     * <p>
+     * The caller should set the prefix and suffix arguments to empty string, except when
+     * getTypeString invokes itself recursively. A non-empty prefix/suffix may be specified
+     * to wrap the return value in a python dict, list or tuple.
+     * <p>
+     * Examples:
+     * - "bool, date, float"  The data must be a bool, date or float.
+     * - "[bool, date]"       The data must be an array, and the array items must be a bool or date.
+     *
+     * @param p                    The OAS schema.
+     * @param prefix               prepended to the returned value.
+     * @param suffix               appended to the returned value.
+     * @param referencedModelNames a list of models that are being referenced while generating the types,
+     *                             may be used to generate imports.
+     * @return a comma-separated string representation of the Python types
+     */
+    private String getTypeString(Schema p, String prefix, String suffix, List<String> referencedModelNames) {
+        String fullSuffix = suffix;
+        if (")".equals(suffix)) {
+            fullSuffix = "," + suffix;
+        }
+        if (StringUtils.isNotEmpty(p.get$ref())) {
+            // The input schema is a reference. If the resolved schema is
+            // a composed schema, convert the name to a Python class.
+            Schema unaliasedSchema = unaliasSchema(p, importMapping);
+            if (unaliasedSchema.get$ref() != null) {
+                String modelName = toModelName(ModelUtils.getSimpleRef(p.get$ref()));
+                if (referencedModelNames != null) {
+                    referencedModelNames.add(modelName);
+                }
+                return prefix + modelName + fullSuffix;
+            }
+        }
+        if (isAnyTypeSchema(p)) {
+            return prefix + "bool, date, datetime, dict, float, int, list, str, none_type" + suffix;
+        }
+        // Resolve $ref because ModelUtils.isXYZ methods do not automatically resolve references.
+        if (ModelUtils.isNullable(ModelUtils.getReferencedSchema(this.openAPI, p))) {
+            fullSuffix = ", none_type" + suffix;
+        }
+        if (isFreeFormObject(p) && getAdditionalProperties(p) == null) {
+            return prefix + "bool, date, datetime, dict, float, int, list, str" + fullSuffix;
+        } else if (ModelUtils.isNumberSchema(p)) {
+            return prefix + "int, float" + fullSuffix;
+        } else if ((ModelUtils.isMapSchema(p) || "object".equals(p.getType())) && getAdditionalProperties(p) != null) {
+            Schema inner = getAdditionalProperties(p);
+            return prefix + "{str: " + getTypeString(inner, "(", ")", referencedModelNames) + "}" + fullSuffix;
+        } else if (ModelUtils.isArraySchema(p)) {
+            ArraySchema ap = (ArraySchema) p;
+            Schema inner = ap.getItems();
+            if (inner == null) {
+                // In OAS 3.0.x, the array "items" attribute is required.
+                // In OAS >= 3.1, the array "items" attribute is optional such that the OAS
+                // specification is aligned with the JSON schema specification.
+                // When "items" is not specified, the elements of the array may be anything at all.
+                // In that case, the return value should be:
+                //    "[bool, date, datetime, dict, float, int, list, str, none_type]"
+                // Using recursion to wrap the allowed python types in an array.
+                Schema anyType = new Schema(); // A Schema without any attribute represents 'any type'.
+                return getTypeString(anyType, "[", "]", referencedModelNames);
+            } else {
+                return prefix + getTypeString(inner, "[", "]", referencedModelNames) + fullSuffix;
+            }
+        }
+        if (ModelUtils.isFileSchema(p)) {
+            return prefix + "file_type" + fullSuffix;
+        }
+        String baseType = getSchemaType(p);
+        return prefix + baseType + fullSuffix;
+    }
+
+    /**
+     * Output the type declaration of a given name
+     *
+     * @param p property schema
+     * @return a string presentation of the type
+     */
+    @Override
+    public String getTypeDeclaration(Schema p) {
+        // this is used to set dataType, which defines a python tuple of classes
+        // in Python we will wrap this in () to make it a tuple but here we
+        // will omit the parens so the generated documentaion will not include
+        // them
+        return getTypeString(p, "", "", null);
+    }
+
+    @Override
+    public String toInstantiationType(Schema property) {
+        if (ModelUtils.isArraySchema(property) || ModelUtils.isMapSchema(property) || property.getAdditionalProperties() != null) {
+            return getSchemaType(property);
+        }
+        return super.toInstantiationType(property);
+    }
+
+    @Override
+    protected void addAdditionPropertiesToCodeGenModel(CodegenModel codegenModel, Schema schema) {
+        Schema addProps = getAdditionalProperties(schema);
+        if (addProps != null) {
+            // if AdditionalProperties exists, get its datatype and
+            // store it in codegenModel.additionalPropertiesType.
+            // The 'addProps' may be a reference, getTypeDeclaration will resolve
+            // the reference.
+            List<String> referencedModelNames = new ArrayList<String>();
+            codegenModel.additionalPropertiesType = getTypeString(addProps, "", "", referencedModelNames);
+            if (referencedModelNames.size() != 0) {
+                // Models that are referenced in the 'additionalPropertiesType' keyword
+                // must be added to the imports.
+                codegenModel.imports.addAll(referencedModelNames);
+            }
+        }
+        // If addProps is null, the value of the 'additionalProperties' keyword is set
+        // to false, i.e. no additional properties are allowed.
+    }
+
+    /**
+     * Gets an example if it exists
+     *
+     * @param sc input schema
+     * @return the example value
+     */
+    protected Object getObjectExample(Schema sc) {
+        Schema schema = sc;
+        String ref = sc.get$ref();
+        if (ref != null) {
+            schema = ModelUtils.getSchema(this.openAPI, ModelUtils.getSimpleRef(ref));
+        }
+        // TODO handle examples in object models in the future
+        Boolean objectModel = (ModelUtils.isObjectSchema(schema) || ModelUtils.isMapSchema(schema) || ModelUtils.isComposedSchema(schema));
+        if (objectModel) {
+            return null;
+        }
+        if (schema.getExample() != null) {
+            return schema.getExample();
+        }
+        if (schema.getDefault() != null) {
+            return schema.getDefault();
+        } else if (schema.getEnum() != null && !schema.getEnum().isEmpty()) {
+            return schema.getEnum().get(0);
+        }
+        return null;
+    }
+
+    /***
+     * Ensures that the string has a leading and trailing quote
+     *
+     * @param in input string
+     * @return quoted string
+     */
+    private String ensureQuotes(String in) {
+        Pattern pattern = Pattern.compile("\r\n|\r|\n");
+        Matcher matcher = pattern.matcher(in);
+        if (matcher.find()) {
+            // if a string has a new line in it add triple quotes to make it a python multiline string
+            return "'''" + in + "'''";
+        }
+        String strPattern = "^['\"].*?['\"]$";
+        if (in.matches(strPattern)) {
+            return in;
+        }
+        return "\"" + in + "\"";
+    }
+
+    public String toExampleValue(Schema schema, Object objExample) {
+        String modelName = getModelName(schema);
+        return toExampleValueRecursive(modelName, schema, objExample, 1, "", 0);
+    }
+
+    private Boolean simpleStringSchema(Schema schema) {
+        Schema sc = schema;
+        String ref = schema.get$ref();
+        if (ref != null) {
+            sc = ModelUtils.getSchema(this.openAPI, ModelUtils.getSimpleRef(ref));
+        }
+        if (ModelUtils.isStringSchema(sc) && !ModelUtils.isDateSchema(sc) && !ModelUtils.isDateTimeSchema(sc) && !"Number".equalsIgnoreCase(sc.getFormat()) && !ModelUtils.isByteArraySchema(sc) && !ModelUtils.isBinarySchema(sc) && schema.getPattern() == null) {
+            return true;
+        }
+        return false;
+    }
+
+    private MappedModel getDiscriminatorMappedModel(CodegenDiscriminator disc) {
+        for (MappedModel mm : disc.getMappedModels()) {
+            String modelName = mm.getModelName();
+            Schema modelSchema = getModelNameToSchemaCache().get(modelName);
+            if (ModelUtils.isObjectSchema(modelSchema)) {
+                return mm;
+            }
+        }
+        return null;
+    }
+
+    /***
+     * Recursively generates string examples for schemas
+     *
+     * @param modelName the string name of the refed model that will be generated for the schema or null
+     * @param schema the schema that we need an example for
+     * @param objExample the example that applies to this schema, for now only string example are used
+     * @param indentationLevel integer indentation level that we are currently at
+     *                         we assume the indentaion amount is 4 spaces times this integer
+     * @param prefix the string prefix that we will use when assigning an example for this line
+     *               this is used when setting key: value, pairs "key: " is the prefix
+     *               and this is used when setting properties like some_property='some_property_example'
+     * @param exampleLine this is the current line that we are generatign an example for, starts at 0
+     *                    we don't indentin the 0th line because using the example value looks like:
+     *                    prop = ModelName( line 0
+     *                        some_property='some_property_example' line 1
+     *                    ) line 2
+     *                    and our example value is:
+     *                    ModelName( line 0
+     *                        some_property='some_property_example' line 1
+     *                    ) line 2
+     * @return the string example
+     */
+    private String toExampleValueRecursive(String modelName, Schema schema, Object objExample, int indentationLevel, String prefix, Integer exampleLine) {
+        final String indentionConst = "    ";
+        String currentIndentation = "";
+        String closingIndentation = "";
+        for (int i = 0; i < indentationLevel; i++) currentIndentation += indentionConst;
+        if (exampleLine.equals(0)) {
+            closingIndentation = currentIndentation;
+            currentIndentation = "";
+        } else {
+            closingIndentation = currentIndentation;
+        }
+        String openChars = "";
+        String closeChars = "";
+        if (modelName != null) {
+            openChars = modelName + "(";
+            closeChars = ")";
+        }
+
+        String fullPrefix = currentIndentation + prefix + openChars;
+
+        String example = null;
+        if (objExample != null) {
+            example = objExample.toString();
+        }
+        if (null != schema.get$ref()) {
+            Map<String, Schema> allDefinitions = ModelUtils.getSchemas(this.openAPI);
+            String ref = ModelUtils.getSimpleRef(schema.get$ref());
+            Schema refSchema = allDefinitions.get(ref);
+            if (null == refSchema) {
+                LOGGER.warn("Unable to find referenced schema " + schema.get$ref() + "\n");
+                return fullPrefix + "None" + closeChars;
+            }
+            String refModelName = getModelName(schema);
+            return toExampleValueRecursive(refModelName, refSchema, objExample, indentationLevel, prefix, exampleLine);
+        } else if (ModelUtils.isNullType(schema) || isAnyTypeSchema(schema)) {
+            // The 'null' type is allowed in OAS 3.1 and above. It is not supported by OAS 3.0.x,
+            // though this tooling supports it.
+            return fullPrefix + "None" + closeChars;
+        } else if (ModelUtils.isBooleanSchema(schema)) {
+            if (objExample == null) {
+                example = "True";
+            } else {
+                if ("false".equalsIgnoreCase(objExample.toString())) {
+                    example = "False";
+                } else {
+                    example = "True";
+                }
+            }
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isDateSchema(schema)) {
+            if (objExample == null) {
+                example = pythonDate("1970-01-01");
+            } else {
+                example = pythonDate(objExample);
+            }
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isDateTimeSchema(schema)) {
+            if (objExample == null) {
+                example = pythonDateTime("1970-01-01T00:00:00.00Z");
+            } else {
+                example = pythonDateTime(objExample);
+            }
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isBinarySchema(schema)) {
+            if (objExample == null) {
+                example = "/path/to/file";
+            }
+            example = "open('" + example + "', 'rb')";
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isByteArraySchema(schema)) {
+            if (objExample == null) {
+                example = "'YQ=='";
+            }
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isStringSchema(schema)) {
+            if (objExample == null) {
+                // a BigDecimal:
+                if ("Number".equalsIgnoreCase(schema.getFormat())) {
+                    example = "2";
+                    return fullPrefix + example + closeChars;
+                } else if (StringUtils.isNotBlank(schema.getPattern())) {
+                    String pattern = schema.getPattern();
+                    RgxGen rgxGen = new RgxGen(pattern);
+                    // this seed makes it so if we have [a-z] we pick a
+                    Random random = new Random(18);
+                    String sample = rgxGen.generate(random);
+                    // omit leading / and trailing /, omit trailing /i
+                    Pattern valueExtractor = Pattern.compile("^/?(.+?)/?.?$");
+                    Matcher m = valueExtractor.matcher(sample);
+                    if (m.find()) {
+                        example = m.group(m.groupCount());
+                    } else {
+                        example = "";
+                    }
+                } else if (schema.getMinLength() != null) {
+                    example = "";
+                    int len = schema.getMinLength().intValue();
+                    for (int i = 0; i < len; i++) example += "a";
+                } else if (ModelUtils.isUUIDSchema(schema)) {
+                    example = "046b6c7f-0b8a-43b9-b35d-6489e6daee91";
+                } else {
+                    example = "string_example";
+                }
+            }
+            return fullPrefix + ensureQuotes(example) + closeChars;
+        } else if (ModelUtils.isIntegerSchema(schema)) {
+            if (objExample == null) {
+                if (schema.getMinimum() != null) {
+                    example = schema.getMinimum().toString();
+                } else {
+                    example = "1";
+                }
+            }
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isNumberSchema(schema)) {
+            if (objExample == null) {
+                if (schema.getMinimum() != null) {
+                    example = schema.getMinimum().toString();
+                } else {
+                    example = "3.14";
+                }
+            }
+            return fullPrefix + example + closeChars;
+        } else if (ModelUtils.isArraySchema(schema)) {
+            if (objExample instanceof Iterable) {
+                // If the example is already a list, return it directly instead of wrongly wrap it in another list
+                return fullPrefix + objExample.toString();
+            }
+            ArraySchema arrayschema = (ArraySchema) schema;
+            Schema itemSchema = arrayschema.getItems();
+            String itemModelName = getModelName(itemSchema);
+            example = fullPrefix + "[" + "\n" + toExampleValueRecursive(itemModelName, itemSchema, objExample, indentationLevel + 1, "", exampleLine + 1) + ",\n" + closingIndentation + "]" + closeChars;
+            return example;
+        } else if (ModelUtils.isMapSchema(schema)) {
+            if (modelName == null) {
+                fullPrefix += "dict(";
+                closeChars = ")";
+            }
+            Object addPropsObj = schema.getAdditionalProperties();
+            // TODO handle true case for additionalProperties
+            if (addPropsObj instanceof Schema) {
+                Schema addPropsSchema = (Schema) addPropsObj;
+                String key = "key";
+                Object addPropsExample = getObjectExample(addPropsSchema);
+                if (addPropsSchema.getEnum() != null && !addPropsSchema.getEnum().isEmpty()) {
+                    key = addPropsSchema.getEnum().get(0).toString();
+                }
+                addPropsExample = exampleFromStringOrArraySchema(addPropsSchema, addPropsExample, key);
+                String addPropPrefix = key + "=";
+                if (modelName == null) {
+                    addPropPrefix = ensureQuotes(key) + ": ";
+                }
+                String addPropsModelName = getModelName(addPropsSchema);
+                example = fullPrefix + "\n" + toExampleValueRecursive(addPropsModelName, addPropsSchema, addPropsExample, indentationLevel + 1, addPropPrefix, exampleLine + 1) + ",\n" + closingIndentation + closeChars;
+            } else {
+                example = fullPrefix + closeChars;
+            }
+            return example;
+        } else if (ModelUtils.isObjectSchema(schema)) {
+            if (modelName == null) {
+                fullPrefix += "dict(";
+                closeChars = ")";
+            }
+            CodegenDiscriminator disc = createDiscriminator(modelName, schema, openAPI);
+            if (disc != null) {
+                MappedModel mm = getDiscriminatorMappedModel(disc);
+                if (mm != null) {
+                    String discPropNameValue = mm.getMappingName();
+                    String chosenModelName = mm.getModelName();
+                    // TODO handle this case in the future, this is when the discriminated
+                    // schema allOf includes this schema, like Cat allOf includes Pet
+                    // so this is the composed schema use case
+                } else {
+                    return fullPrefix + closeChars;
+                }
+            }
+            return exampleForObjectModel(schema, fullPrefix, closeChars, null, indentationLevel, exampleLine, closingIndentation);
+        } else if (ModelUtils.isComposedSchema(schema)) {
+            // TODO add examples for composed schema models without discriminators
+
+            CodegenDiscriminator disc = createDiscriminator(modelName, schema, openAPI);
+            if (disc != null) {
+                MappedModel mm = getDiscriminatorMappedModel(disc);
+                if (mm != null) {
+                    String discPropNameValue = mm.getMappingName();
+                    String chosenModelName = mm.getModelName();
+                    Schema modelSchema = getModelNameToSchemaCache().get(chosenModelName);
+                    CodegenProperty cp = new CodegenProperty();
+                    cp.setName(disc.getPropertyName());
+                    cp.setExample(discPropNameValue);
+                    return exampleForObjectModel(modelSchema, fullPrefix, closeChars, cp, indentationLevel, exampleLine, closingIndentation);
+                } else {
+                    return fullPrefix + closeChars;
+                }
+            }
+            return fullPrefix + closeChars;
+        } else {
+            LOGGER.warn("Type " + schema.getType() + " not handled properly in toExampleValue");
+        }
+
+        return example;
+    }
+
+    private String exampleForObjectModel(Schema schema, String fullPrefix, String closeChars, CodegenProperty discProp, int indentationLevel, int exampleLine, String closingIndentation) {
+        Map<String, Schema> requiredAndOptionalProps = schema.getProperties();
+        if (requiredAndOptionalProps == null || requiredAndOptionalProps.isEmpty()) {
+            return fullPrefix + closeChars;
+        }
+
+        String example = fullPrefix + "\n";
+        for (Map.Entry<String, Schema> entry : requiredAndOptionalProps.entrySet()) {
+            String propName = entry.getKey();
+            Schema propSchema = entry.getValue();
+            propName = toVarName(propName);
+            String propModelName = null;
+            Object propExample = null;
+            if (discProp != null && propName.equals(discProp.name)) {
+                propModelName = null;
+                propExample = discProp.example;
+            } else {
+                propModelName = getModelName(propSchema);
+                propExample = exampleFromStringOrArraySchema(propSchema, null, propName);
+            }
+            example += toExampleValueRecursive(propModelName, propSchema, propExample, indentationLevel + 1, propName + "=", exampleLine + 1) + ",\n";
+        }
+        // TODO handle additionalProperties also
+        example += closingIndentation + closeChars;
+        return example;
+    }
+
+    private Object exampleFromStringOrArraySchema(Schema sc, Object currentExample, String propName) {
+        if (currentExample != null) {
+            return currentExample;
+        }
+        Schema schema = sc;
+        String ref = sc.get$ref();
+        if (ref != null) {
+            schema = ModelUtils.getSchema(this.openAPI, ModelUtils.getSimpleRef(ref));
+        }
+        Object example = getObjectExample(schema);
+        if (example != null) {
+            return example;
+        } else if (simpleStringSchema(schema)) {
+            return propName + "_example";
+        } else if (ModelUtils.isArraySchema(schema)) {
+            ArraySchema arraySchema = (ArraySchema) schema;
+            Schema itemSchema = arraySchema.getItems();
+            example = getObjectExample(itemSchema);
+            if (example != null) {
+                return example;
+            } else if (simpleStringSchema(itemSchema)) {
+                return propName + "_example";
+            }
+        }
+        return null;
+    }
+
+
+    /***
+     *
+     * Set the codegenParameter example value
+     * We have a custom version of this function so we can invoke toExampleValue
+     *
+     * @param codegenParameter the item we are setting the example on
+     * @param parameter the base parameter that came from the spec
+     */
+    @Override
+    public void setParameterExampleValue(CodegenParameter codegenParameter, Parameter parameter) {
+        Schema schema = parameter.getSchema();
+        if (schema == null) {
+            LOGGER.warn("CodegenParameter.example defaulting to null because parameter lacks a schema");
+            return;
+        }
+
+        Object example = null;
+        if (codegenParameter.vendorExtensions != null && codegenParameter.vendorExtensions.containsKey("x-example")) {
+            example = codegenParameter.vendorExtensions.get("x-example");
+        } else if (parameter.getExample() != null) {
+            example = parameter.getExample();
+        } else if (parameter.getExamples() != null && !parameter.getExamples().isEmpty() && parameter.getExamples().values().iterator().next().getValue() != null) {
+            example = parameter.getExamples().values().iterator().next().getValue();
+        } else {
+            example = getObjectExample(schema);
+        }
+        example = exampleFromStringOrArraySchema(schema, example, parameter.getName());
+        String finalExample = toExampleValue(schema, example);
+        codegenParameter.example = finalExample;
+    }
+
+    /**
+     * Return the example value of the parameter.
+     *
+     * @param codegenParameter Codegen parameter
+     * @param requestBody      Request body
+     */
+    @Override
+    public void setParameterExampleValue(CodegenParameter codegenParameter, RequestBody requestBody) {
+        if (codegenParameter.vendorExtensions != null && codegenParameter.vendorExtensions.containsKey("x-example")) {
+            codegenParameter.example = Json.pretty(codegenParameter.vendorExtensions.get("x-example"));
+        }
+
+        Content content = requestBody.getContent();
+
+        if (content.size() > 1) {
+            // @see ModelUtils.getSchemaFromContent()
+            once(LOGGER).warn("Multiple MediaTypes found, using only the first one");
+        }
+
+        MediaType mediaType = content.values().iterator().next();
+        Schema schema = mediaType.getSchema();
+        if (schema == null) {
+            LOGGER.warn("CodegenParameter.example defaulting to null because requestBody content lacks a schema");
+            return;
+        }
+
+        Object example = null;
+        if (mediaType.getExample() != null) {
+            example = mediaType.getExample();
+        } else if (mediaType.getExamples() != null && !mediaType.getExamples().isEmpty() && mediaType.getExamples().values().iterator().next().getValue() != null) {
+            example = mediaType.getExamples().values().iterator().next().getValue();
+        } else {
+            example = getObjectExample(schema);
+        }
+        example = exampleFromStringOrArraySchema(schema, example, codegenParameter.paramName);
+        codegenParameter.example = toExampleValue(schema, example);
+    }
+
+    /**
+     * Create a CodegenParameter for a Form Property
+     * We have a custom version of this method so we can invoke
+     * setParameterExampleValue(codegenParameter, parameter)
+     * rather than setParameterExampleValue(codegenParameter)
+     * This ensures that all of our samples are generated in
+     * toExampleValueRecursive
+     *
+     * @param name           the property name
+     * @param propertySchema the property schema
+     * @param imports        our import set
+     * @return the resultant CodegenParameter
+     */
+    @Override
+    public CodegenParameter fromFormProperty(String name, Schema propertySchema, Set<String> imports) {
+        CodegenParameter cp = super.fromFormProperty(name, propertySchema, imports);
+        Parameter p = new Parameter();
+        p.setSchema(propertySchema);
+        p.setName(cp.paramName);
+        setParameterExampleValue(cp, p);
+        return cp;
+    }
+
+    /**
+     * Return a map from model name to Schema for efficient lookup.
+     *
+     * @return map from model name to Schema.
+     */
+    protected Map<String, Schema> getModelNameToSchemaCache() {
+        if (modelNameToSchemaCache == null) {
+            // Create a cache to efficiently lookup schema based on model name.
+            Map<String, Schema> m = new HashMap<String, Schema>();
+            ModelUtils.getSchemas(openAPI).forEach((key, schema) -> {
+                m.put(toModelName(key), schema);
+            });
+            modelNameToSchemaCache = Collections.unmodifiableMap(m);
+        }
+        return modelNameToSchemaCache;
+    }
+
+    @Override
+    protected void setAddProps(Schema schema, IJsonSchemaValidationProperties property){
+        if (schema.equals(new Schema())) {
+            // if we are trying to set additionalProperties on an empty schema stop recursing
+            return;
+        }
+        boolean additionalPropertiesIsAnyType = false;
+        CodegenModel m = null;
+        if (property instanceof CodegenModel) {
+            m = (CodegenModel) property;
+        }
+        CodegenProperty addPropProp = null;
+        boolean isAdditionalPropertiesTrue = false;
+        if (schema.getAdditionalProperties() == null) {
+            if (!disallowAdditionalPropertiesIfNotPresent) {
+                isAdditionalPropertiesTrue = true;
+                // pass in the hashCode as the name to ensure that the returned property is not from the cache
+                // if we need to set indent on every one, then they need to be different
+                addPropProp = fromProperty(String.valueOf(property.hashCode()),  new Schema());
+                addPropProp.name = "";
+                addPropProp.baseName = "";
+                addPropProp.nameInSnakeCase = null;
+                additionalPropertiesIsAnyType = true;
+            }
+        } else if (schema.getAdditionalProperties() instanceof Boolean) {
+            if (Boolean.TRUE.equals(schema.getAdditionalProperties())) {
+                isAdditionalPropertiesTrue = true;
+                addPropProp = fromProperty(String.valueOf(property.hashCode()),  new Schema());
+                addPropProp.name = "";
+                addPropProp.baseName = "";
+                addPropProp.nameInSnakeCase = null;
+                additionalPropertiesIsAnyType = true;
+            }
+        } else {
+            addPropProp = fromProperty(String.valueOf(property.hashCode()), (Schema) schema.getAdditionalProperties());
+            addPropProp.name = "";
+            addPropProp.baseName = "";
+            addPropProp.nameInSnakeCase = null;
+            if (isAnyTypeSchema((Schema) schema.getAdditionalProperties())) {
+                additionalPropertiesIsAnyType = true;
+            }
+        }
+        if (additionalPropertiesIsAnyType) {
+            property.setAdditionalPropertiesIsAnyType(true);
+        }
+        if (m != null && isAdditionalPropertiesTrue) {
+            m.isAdditionalPropertiesTrue = true;
+        }
+        if (ModelUtils.isComposedSchema(schema) && !supportsAdditionalPropertiesWithComposedSchema) {
+            return;
+        }
+        if (addPropProp != null) {
+            property.setAdditionalProperties(addPropProp);
+        }
+    }
+
+    /**
+     * Update property for array(list) container
+     *
+     * @param property      Codegen property
+     * @param innerProperty Codegen inner property of map or list
+     */
+    @Override
+    protected void updatePropertyForArray(CodegenProperty property, CodegenProperty innerProperty) {
+        if (innerProperty == null) {
+            if(LOGGER.isWarnEnabled()) {
+                LOGGER.warn("skipping invalid array property {}", Json.pretty(property));
+            }
+            return;
+        }
+        property.dataFormat = innerProperty.dataFormat;
+        if (languageSpecificPrimitives.contains(innerProperty.baseType)) {
+            property.isPrimitiveType = true;
+        }
+        property.items = innerProperty;
+        property.mostInnerItems = getMostInnerItems(innerProperty);
+        // inner item is Enum
+        if (isPropertyInnerMostEnum(property)) {
+            // isEnum is set to true when the type is an enum
+            // or the inner type of an array/map is an enum
+            property.isEnum = true;
+            // update datatypeWithEnum and default value for array
+            // e.g. List<string> => List<StatusEnum>
+            updateDataTypeWithEnumForArray(property);
+            // set allowable values to enum values (including array/map of enum)
+            property.allowableValues = getInnerEnumAllowableValues(property);
+        }
+
+    }
+
+    protected void updatePropertyForString(CodegenProperty property, Schema p) {
+        if (ModelUtils.isByteArraySchema(p)) {
+            property.isByteArray = true;
+            property.setIsString(false);
+        } else if (ModelUtils.isBinarySchema(p)) {
+            property.isBinary = true;
+            property.isFile = true; // file = binary in OAS3
+        } else if (ModelUtils.isUUIDSchema(p)) {
+            property.isUuid = true;
+        } else if (ModelUtils.isURISchema(p)) {
+            property.isUri = true;
+        } else if (ModelUtils.isEmailSchema(p)) {
+            property.isEmail = true;
+        } else if (ModelUtils.isDateSchema(p)) { // date format
+            property.setIsString(false); // for backward compatibility with 2.x
+            property.isDate = true;
+        } else if (ModelUtils.isDateTimeSchema(p)) { // date-time format
+            property.setIsString(false); // for backward compatibility with 2.x
+            property.isDateTime = true;
+        } else if (ModelUtils.isDecimalSchema(p)) { // type: string, format: number
+            property.isDecimal = true;
+            property.setIsString(false);
+        }
+        property.pattern = toRegularExpression(p.getPattern());
+    }
+
+    @Override
+    protected void updatePropertyForObject(CodegenProperty property, Schema p) {
+        addVarsRequiredVarsAdditionalProps(p, property);
+    }
+
+    @Override
+    protected void updatePropertyForAnyType(CodegenProperty property, Schema p) {
+        // The 'null' value is allowed when the OAS schema is 'any type'.
+        // See https://github.com/OAI/OpenAPI-Specification/issues/1389
+        if (Boolean.FALSE.equals(p.getNullable())) {
+            LOGGER.warn("Schema '{}' is any type, which includes the 'null' value. 'nullable' cannot be set to 'false'", p.getName());
+        }
+        addVarsRequiredVarsAdditionalProps(p, property);
+    }
+
+    @Override
+    protected void updateModelForObject(CodegenModel m, Schema schema) {
+        if (schema.getProperties() != null || schema.getRequired() != null) {
+            // passing null to allProperties and allRequired as there's no parent
+            addVars(m, unaliasPropertySchema(schema.getProperties()), schema.getRequired(), null, null);
+        }
+        // an object or anyType composed schema that has additionalProperties set
+        addAdditionPropertiesToCodeGenModel(m, schema);
+        // process 'additionalProperties'
+        setAddProps(schema, m);
+    }
+
+    @Override
+    protected void updateModelForAnyType(CodegenModel m, Schema schema) {
+        // The 'null' value is allowed when the OAS schema is 'any type'.
+        // See https://github.com/OAI/OpenAPI-Specification/issues/1389
+        if (Boolean.FALSE.equals(schema.getNullable())) {
+            LOGGER.error("Schema '{}' is any type, which includes the 'null' value. 'nullable' cannot be set to 'false'", m.name);
+        }
+        // todo add items support here in the future
+        if (schema.getProperties() != null || schema.getRequired() != null) {
+            // passing null to allProperties and allRequired as there's no parent
+            addVars(m, unaliasPropertySchema(schema.getProperties()), schema.getRequired(), null, null);
+        }
+        addAdditionPropertiesToCodeGenModel(m, schema);
+        // process 'additionalProperties'
+        setAddProps(schema, m);
+    }
+
+    @Override
+    protected void updateModelForComposedSchema(CodegenModel m, Schema schema, Map<String, Schema> allDefinitions) {
+        final ComposedSchema composed = (ComposedSchema) schema;
+
+        // TODO revise the logic below to set discriminator, xml attributes
+        if (composed.getAllOf() != null) {
+            int modelImplCnt = 0; // only one inline object allowed in a ComposedModel
+            int modelDiscriminators = 0; // only one discriminator allowed in a ComposedModel
+            for (Schema innerSchema : composed.getAllOf()) { // TODO need to work with anyOf, oneOf as well
+                if (m.discriminator == null && innerSchema.getDiscriminator() != null) {
+                    LOGGER.debug("discriminator is set to null (not correctly set earlier): {}", m.name);
+                    m.setDiscriminator(createDiscriminator(m.name, innerSchema, this.openAPI));
+                    if (!this.getLegacyDiscriminatorBehavior()) {
+                        m.addDiscriminatorMappedModelsImports();
+                    }
+                    modelDiscriminators++;
+                }
+
+                if (innerSchema.getXml() != null) {
+                    m.xmlPrefix = innerSchema.getXml().getPrefix();
+                    m.xmlNamespace = innerSchema.getXml().getNamespace();
+                    m.xmlName = innerSchema.getXml().getName();
+                }
+                if (modelDiscriminators > 1) {
+                    LOGGER.error("Allof composed schema is inheriting >1 discriminator. Only use one discriminator: {}", composed);
+                }
+
+                if (modelImplCnt++ > 1) {
+                    LOGGER.warn("More than one inline schema specified in allOf:. Only the first one is recognized. All others are ignored.");
+                    break; // only one schema with discriminator allowed in allOf
+                }
+            }
+        }
+
+        CodegenComposedSchemas cs = m.getComposedSchemas();
+        if (cs != null) {
+            if (cs.getAllOf() != null && !cs.getAllOf().isEmpty()) {
+                for (CodegenProperty cp: cs.getAllOf()) {
+                    if (cp.complexType != null) {
+                        addImport(m, cp.complexType);
+                    }
+                }
+            }
+            if (cs.getOneOf() != null && !cs.getOneOf().isEmpty()) {
+                for (CodegenProperty cp: cs.getOneOf()) {
+                    if (cp.complexType != null) {
+                        addImport(m, cp.complexType);
+                    }
+                }
+            }
+            if (cs.getAnyOf() != null && !cs.getAnyOf().isEmpty()) {
+                for (CodegenProperty cp: cs.getAnyOf()) {
+                    if (cp.complexType != null) {
+                        addImport(m, cp.complexType);
+                    }
+                }
+            }
+        }
+    }
+
+    @Override
+    public Map<String, Object> postProcessModels(Map<String, Object> objs) {
+        // process enum in models
+        return postProcessModelsEnum(objs);
+    }
+
+    /*
+     * The OpenAPI pattern spec follows the Perl convention and style of modifiers. Python
+     * does not support this in as natural a way so it needs to convert it. See
+     * https://docs.python.org/2/howto/regex.html#compilation-flags for details.
+     */
+    public void postProcessPattern(String pattern, Map<String, Object> vendorExtensions) {
+        if (pattern != null) {
+            int i = pattern.lastIndexOf('/');
+
+            //Must follow Perl /pattern/modifiers convention
+            if (pattern.charAt(0) != '/' || i < 2) {
+                throw new IllegalArgumentException("Pattern must follow the Perl "
+                        + "/pattern/modifiers convention. " + pattern + " is not valid.");
+            }
+
+            String regex = pattern.substring(1, i).replace("'", "\\'");
+            List<String> modifiers = new ArrayList<String>();
+
+            for (char c : pattern.substring(i).toCharArray()) {
+                if (regexModifiers.containsKey(c)) {
+                    String modifier = regexModifiers.get(c);
+                    modifiers.add(modifier);
+                }
+            }
+
+            vendorExtensions.put("x-regex", regex);
+            vendorExtensions.put("x-modifiers", modifiers);
+        }
+    }
+
+    @Override
+    public CodegenType getTag() {
+        return CodegenType.CLIENT;
+    }
+
+    @Override
+    public String apiDocFileFolder() {
+        return (outputFolder + "/" + apiDocPath);
+    }
+
+    @Override
+    public String modelDocFileFolder() {
+        return (outputFolder + "/" + modelDocPath);
+    }
+
+    @Override
+    public String toModelDocFilename(String name) {
+        return toModelName(name);
+    }
+
+    @Override
+    public String toApiDocFilename(String name) {
+        return toApiName(name);
+    }
+
+    @Override
+    public String addRegularExpressionDelimiter(String pattern) {
+        if (StringUtils.isEmpty(pattern)) {
+            return pattern;
+        }
+
+        if (!pattern.matches("^/.*")) {
+            // Perform a negative lookbehind on each `/` to ensure that it is escaped.
+            return "/" + pattern.replaceAll("(?<!\\\\)\\/", "\\\\/") + "/";
+        }
+
+        return pattern;
+    }
+
+    @Override
+    public String apiFileFolder() {
+        return outputFolder + File.separatorChar + packagePath() + File.separatorChar +  apiPackage();
+    }
+
+    @Override
+    public String modelFileFolder() {
+        return outputFolder + File.separatorChar + packagePath() + File.separatorChar +  modelPackage();
+    }
+
+    @Override
+    public String apiTestFileFolder() {
+        return outputFolder + File.separatorChar + testFolder;
+    }
+
+    @Override
+    public String modelTestFileFolder() {
+        return outputFolder + File.separatorChar + testFolder;
+    }
+
+    public void setUseNose(String val) {
+        this.useNose = Boolean.parseBoolean(val);
+    }
+
+    public void setPackageUrl(String packageUrl) {
+        this.packageUrl = packageUrl;
+    }
+
+    public String packagePath() {
+        return packageName.replace('.', File.separatorChar);
+    }
+
+    /**
+     * Generate Python package name from String `packageName`
+     * <p>
+     * (PEP 0008) Python packages should also have short, all-lowercase names,
+     * although the use of underscores is discouraged.
+     *
+     * @param packageName Package name
+     * @return Python package name that conforms to PEP 0008
+     */
+    @SuppressWarnings("static-method")
+    public String generatePackageName(String packageName) {
+        return underscore(packageName.replaceAll("[^\\w]+", ""));
+    }
+
+    /**
+     * A custom version of this method is needed to ensure that the form object parameter is kept as-is
+     * as an object and is not exploded into separate parameters
+     * @param body the body that is being handled
+     * @param imports the imports for this body
+     * @return the list of length one containing a single type object CodegenParameter
+     */
+    @Override
+    public List<CodegenParameter> fromRequestBodyToFormParameters(RequestBody body, Set<String> imports) {
+        List<CodegenParameter> parameters = new ArrayList<>();
+        LOGGER.debug("debugging fromRequestBodyToFormParameters= {}", body);
+        Schema schema = ModelUtils.getSchemaFromRequestBody(body);
+        schema = ModelUtils.getReferencedSchema(this.openAPI, schema);
+        CodegenParameter cp = fromFormProperty("body", schema, imports);
+        cp.setContent(getContent(body.getContent(), imports, "RequestBody"));
+        cp.isFormParam = false;
+        cp.isBodyParam = true;
+        parameters.add(cp);
+        return parameters;
+    }
+
+    /**
+     * Custom version of this method so we can move the body parameter into bodyParam
+     *
+     * @param path       the path of the operation
+     * @param httpMethod HTTP method
+     * @param operation  OAS operation object
+     * @param servers    list of servers
+     * @return the resultant CodegenOperation instance
+     */
+    @Override
+    public CodegenOperation fromOperation(String path,
+                                          String httpMethod,
+                                          Operation operation,
+                                          List<Server> servers) {
+        CodegenOperation co = super.fromOperation(path, httpMethod, operation, servers);
+        if (co.bodyParam == null) {
+            for (CodegenParameter cp: co.allParams) {
+                if (cp.isBodyParam) {
+                    co.bodyParam = cp;
+                    co.bodyParams.add(cp);
+                }
+            }
+        }
+        return co;
+    }
+
+    @Override
+    public String defaultTemplatingEngine() {
+        return "handlebars";
+    }
+
+    @Override
+    public String generatorLanguageVersion() { return ">=3.9"; };
+}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java
index 6ee1131973e..72001434c03 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java
@@ -72,7 +72,7 @@ public class PythonFastAPIServerCodegen extends AbstractPythonCodegen {
 
     @Override
     public String getHelp() {
-        return "Generates a Python FastAPI server (beta).";
+        return "Generates a Python FastAPI server (beta). Models are defined with the pydantic library";
     }
 
     public PythonFastAPIServerCodegen() {
@@ -294,4 +294,7 @@ public class PythonFastAPIServerCodegen extends AbstractPythonCodegen {
         String regex = super.toRegularExpression(pattern);
         return StringUtils.substring(regex, 1, -1);
     }
+
+    @Override
+    public String generatorLanguageVersion() { return "3.7"; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFlaskConnexionServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFlaskConnexionServerCodegen.java
index 79fa8885b2e..a9358b4007a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFlaskConnexionServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFlaskConnexionServerCodegen.java
@@ -54,4 +54,7 @@ public class PythonFlaskConnexionServerCodegen extends AbstractPythonConnexionSe
         supportingFiles.add(new SupportingFile("__init__.mustache", packagePath(), "__init__.py"));
         testPackage = packageName + "." + testPackage;
     }
+
+    @Override
+    public String generatorLanguageVersion() { return "2.7 and 3.5.2+"; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonLegacyClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonLegacyClientCodegen.java
index 05b5b92df39..15aa8d7246f 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonLegacyClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonLegacyClientCodegen.java
@@ -17,7 +17,6 @@
 
 package org.openapitools.codegen.languages;
 
-import io.swagger.v3.oas.models.media.Schema;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
@@ -312,6 +311,13 @@ public class PythonLegacyClientCodegen extends AbstractPythonCodegen implements
      * The OpenAPI pattern spec follows the Perl convention and style of modifiers. Python
      * does not support this in as natural a way so it needs to convert it. See
      * https://docs.python.org/2/howto/regex.html#compilation-flags for details.
+     *
+     * @param pattern (the String pattern to convert from python to Perl convention)
+     * @param vendorExtensions (list of custom x-* properties for extra functionality-see https://swagger.io/docs/specification/openapi-extensions/)
+     * @return void
+     * @throws IllegalArgumentException if pattern does not follow the Perl /pattern/modifiers convention
+     *
+     * Includes fix for issue #6675
      */
     public void postProcessPattern(String pattern, Map<String, Object> vendorExtensions) {
         if (pattern != null) {
@@ -323,6 +329,13 @@ public class PythonLegacyClientCodegen extends AbstractPythonCodegen implements
                         + "/pattern/modifiers convention. " + pattern + " is not valid.");
             }
 
+        //check for instances of extra backslash that could cause compile issues and remove
+        int firstBackslash = pattern.indexOf("\\");
+            int bracket = pattern.indexOf("[");
+            if (firstBackslash == 0 || firstBackslash == 1 || firstBackslash == bracket+1) {
+                pattern = pattern.substring(0,firstBackslash)+pattern.substring(firstBackslash+1);
+            }
+
             String regex = pattern.substring(1, i).replace("'", "\\'");
             List<String> modifiers = new ArrayList<String>();
 
@@ -435,4 +448,7 @@ public class PythonLegacyClientCodegen extends AbstractPythonCodegen implements
     public String generatePackageName(String packageName) {
         return underscore(packageName.replaceAll("[^\\w]+", ""));
     }
+
+    @Override
+    public String generatorLanguageVersion() { return "2.7 and 3.4+"; };
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RClientCodegen.java
index b24d527646a..99294b06a15 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RClientCodegen.java
@@ -796,4 +796,6 @@ public class RClientCodegen extends DefaultCodegen implements CodegenConfig {
         System.out.println("################################################################################");
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.R; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RubyClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RubyClientCodegen.java
index 335a329ef59..88a8aa6547d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RubyClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RubyClientCodegen.java
@@ -680,7 +680,11 @@ public class RubyClientCodegen extends AbstractRubyCodegen {
             }
             return "[" + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "]";
         } else if (codegenProperty.isMap) {
-            return "{ key: " + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "}";
+            if (codegenProperty.items != null) {
+                return "{ key: " + constructExampleCode(codegenProperty.items, modelMaps, processedModelMap) + "}";
+            } else {
+                return "{ ... }";
+            }
         } else if (codegenProperty.isPrimitiveType) { // primitive type
             if (codegenProperty.isEnum) {
                 // When inline enum, set example to first allowable value
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustClientCodegen.java
index 265a9afc208..5e8e5ac0308 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustClientCodegen.java
@@ -690,4 +690,7 @@ public class RustClientCodegen extends DefaultCodegen implements CodegenConfig {
             return null;
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.RUST; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustServerCodegen.java
index 328e18387ea..e4eb0dc9d79 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustServerCodegen.java
@@ -1742,4 +1742,7 @@ public class RustServerCodegen extends DefaultCodegen implements CodegenConfig {
             updatePropertyForMap(property, p);
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.RUST; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaFinchServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaFinchServerCodegen.java
index 146ddf06ccf..7aa5bfcce97 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaFinchServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaFinchServerCodegen.java
@@ -484,4 +484,6 @@ public class ScalaFinchServerCodegen extends DefaultCodegen implements CodegenCo
         System.out.println("################################################################################");
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.SCALA; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java
index f2695d08cd2..ec8853e4a96 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java
@@ -20,7 +20,6 @@ package org.openapitools.codegen.languages;
 import static org.apache.commons.lang3.StringUtils.isNotEmpty;
 import static org.openapitools.codegen.utils.StringUtils.camelize;
 
-import io.swagger.v3.oas.models.media.Schema;
 import java.io.File;
 import java.net.URL;
 import java.util.ArrayList;
@@ -33,6 +32,12 @@ import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.stream.Collectors;
 
+import com.samskivert.mustache.Mustache;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.PathItem;
+import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.servers.Server;
 import org.apache.commons.lang3.tuple.Pair;
 import org.openapitools.codegen.CliOption;
 import org.openapitools.codegen.CodegenConstants;
@@ -59,12 +64,6 @@ import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.samskivert.mustache.Mustache;
-
-import io.swagger.v3.oas.models.OpenAPI;
-import io.swagger.v3.oas.models.Operation;
-import io.swagger.v3.oas.models.PathItem;
-
 public class SpringCodegen extends AbstractJavaCodegen
         implements BeanValidationFeatures, PerformBeanValidationFeatures, OptionalFeatures {
     private final Logger LOGGER = LoggerFactory.getLogger(SpringCodegen.class);
@@ -90,7 +89,6 @@ public class SpringCodegen extends AbstractJavaCodegen
     public static final String IMPLICIT_HEADERS = "implicitHeaders";
     public static final String OPENAPI_DOCKET_CONFIG = "swaggerDocketConfig";
     public static final String API_FIRST = "apiFirst";
-    public static final String OAS3 = "oas3";
     public static final String SPRING_CONTROLLER = "useSpringController";
     public static final String HATEOAS = "hateoas";
     public static final String RETURN_SUCCESS_CODE = "returnSuccessCode";
@@ -123,7 +121,6 @@ public class SpringCodegen extends AbstractJavaCodegen
     protected boolean returnSuccessCode = false;
     protected boolean unhandledException = false;
     protected boolean useSpringController = false;
-    protected boolean oas3 = false;
 
     public SpringCodegen() {
         super();
@@ -199,7 +196,6 @@ public class SpringCodegen extends AbstractJavaCodegen
                 CliOption.newBoolean(HATEOAS, "Use Spring HATEOAS library to allow adding HATEOAS links", hateoas));
         cliOptions
                 .add(CliOption.newBoolean(RETURN_SUCCESS_CODE, "Generated server returns 2xx code", returnSuccessCode));
-        cliOptions.add(CliOption.newBoolean(OAS3, "Use OAS 3 Swagger annotations instead of OAS 2 annotations", oas3));
         cliOptions.add(CliOption.newBoolean(SPRING_CONTROLLER, "Annotate the generated API as a Spring Controller", useSpringController));
         cliOptions.add(CliOption.newBoolean(UNHANDLED_EXCEPTION_HANDLING,
                 "Declare operation methods to throw a generic exception and allow unhandled exceptions (useful for Spring `@ControllerAdvice` directives).",
@@ -241,14 +237,40 @@ public class SpringCodegen extends AbstractJavaCodegen
     }
 
     @Override
-    public void processOpts() {
+    public DocumentationProvider defaultDocumentationProvider() {
+        return DocumentationProvider.SPRINGDOC;
+    }
 
+    public List<DocumentationProvider> supportedDocumentationProvider() {
+        List<DocumentationProvider> supportedProviders = new ArrayList<>();
+        supportedProviders.add(DocumentationProvider.NONE);
+        supportedProviders.add(DocumentationProvider.SOURCE);
+        supportedProviders.add(DocumentationProvider.SPRINGFOX);
+        supportedProviders.add(DocumentationProvider.SPRINGDOC);
+        return supportedProviders;
+    }
+
+    @Override
+    public List<AnnotationLibrary> supportedAnnotationLibraries() {
+        List<AnnotationLibrary> supportedLibraries = new ArrayList<>();
+        supportedLibraries.add(AnnotationLibrary.NONE);
+        supportedLibraries.add(AnnotationLibrary.SWAGGER1);
+        supportedLibraries.add(AnnotationLibrary.SWAGGER2);
+        return supportedLibraries;
+    }
+
+    @Override
+    public void processOpts() {
         final List<Pair<String, String>> configOptions = additionalProperties.entrySet().stream()
                 .filter(e -> !Arrays.asList(API_FIRST, "hideGenerationTimestamp").contains(e.getKey()))
                 .filter(e -> cliOptions.stream().map(CliOption::getOpt).anyMatch(opt -> opt.equals(e.getKey())))
                 .map(e -> Pair.of(e.getKey(), e.getValue().toString())).collect(Collectors.toList());
         additionalProperties.put("configOptions", configOptions);
 
+        // TODO remove "file" from reserved word list as feign client doesn't support using `baseName`
+        // as the parameter name yet
+        reservedWords.remove("file");
+
         // Process java8 option before common java ones to change the default
         // dateLibrary to java8.
         LOGGER.info("----------------------------------");
@@ -372,11 +394,6 @@ public class SpringCodegen extends AbstractJavaCodegen
         }
         writePropertyBack(SPRING_CONTROLLER, useSpringController);
 
-        if (additionalProperties.containsKey(OAS3)) {
-            this.setOas3(convertPropertyToBoolean(OAS3));
-        }
-        writePropertyBack(OAS3, oas3);
-
         if (additionalProperties.containsKey(RETURN_SUCCESS_CODE)) {
             this.setReturnSuccessCode(Boolean.parseBoolean(additionalProperties.get(RETURN_SUCCESS_CODE).toString()));
         }
@@ -387,8 +404,12 @@ public class SpringCodegen extends AbstractJavaCodegen
         }
         additionalProperties.put(UNHANDLED_EXCEPTION_HANDLING, this.isUnhandledException());
 
-        typeMapping.put("file", "org.springframework.core.io.Resource");
-        importMapping.put("org.springframework.core.io.Resource", "org.springframework.core.io.Resource");
+        typeMapping.put("file", "Resource");
+        importMapping.put("Resource", "org.springframework.core.io.Resource");
+        importMapping.put("Pageable", "org.springframework.data.domain.Pageable");
+        importMapping.put("DateTimeFormat", "org.springframework.format.annotation.DateTimeFormat");
+        importMapping.put("ApiIgnore", "springfox.documentation.annotations.ApiIgnore");
+        importMapping.put("ParameterObject", "org.springdoc.api.annotations.ParameterObject");
 
         if (useOptional) {
             writePropertyBack(USE_OPTIONAL, useOptional);
@@ -513,15 +534,6 @@ public class SpringCodegen extends AbstractJavaCodegen
             additionalProperties.put(RESPONSE_WRAPPER, "Callable");
         }
 
-        // Springfox cannot be used with oas3 or apiFirst or reactive. So, write the property back after determining
-        // whether it should be enabled or not.
-        boolean useSpringFox = false;
-        if (!apiFirst && !reactive && !oas3) {
-            useSpringFox = true;
-            additionalProperties.put("useSpringfox", true);
-        }
-        writePropertyBack("useSpringfox", useSpringFox);
-
         // Some well-known Spring or Spring-Cloud response wrappers
         if (isNotEmpty(responseWrapper)) {
             additionalProperties.put("jdk8", false);
@@ -880,10 +892,6 @@ public class SpringCodegen extends AbstractJavaCodegen
         this.useSpringController = useSpringController;
     }
 
-    public void setOas3(boolean oas3) {
-        this.oas3 = oas3;
-    }
-
     public void setReturnSuccessCode(boolean returnSuccessCode) {
         this.returnSuccessCode = returnSuccessCode;
     }
@@ -896,6 +904,11 @@ public class SpringCodegen extends AbstractJavaCodegen
     public void postProcessModelProperty(CodegenModel model, CodegenProperty property) {
         super.postProcessModelProperty(model, property);
 
+        // add org.springframework.format.annotation.DateTimeFormat when needed
+        if (property.isDate || property.isDateTime) {
+            model.imports.add("DateTimeFormat");
+        }
+
         if ("null".equals(property.example)) {
             property.example = null;
         }
@@ -927,14 +940,46 @@ public class SpringCodegen extends AbstractJavaCodegen
     @Override
     public CodegenModel fromModel(String name, Schema model) {
         CodegenModel codegenModel = super.fromModel(name, model);
-        if (oas3) {
-            // remove swagger2 imports
+        if (getAnnotationLibrary() != AnnotationLibrary.SWAGGER1) {
+            // remove swagger imports
             codegenModel.imports.remove("ApiModelProperty");
             codegenModel.imports.remove("ApiModel");
         }
         return codegenModel;
     }
 
+    /*
+     * Add dynamic imports based on the parameters and vendor extensions of an operation.
+     * The imports are expanded by the mustache {{import}} tag available to model and api
+     * templates.
+     */
+    @Override
+    public CodegenOperation fromOperation(String path, String httpMethod, Operation operation, List<Server> servers) {
+        CodegenOperation codegenOperation = super.fromOperation(path, httpMethod, operation, servers);
+
+        // add org.springframework.format.annotation.DateTimeFormat when needed
+        codegenOperation.allParams.stream().filter(p -> p.isDate || p.isDateTime).findFirst()
+            .ifPresent(p -> codegenOperation.imports.add("DateTimeFormat"));
+
+        // add org.springframework.data.domain.Pageable import when needed
+        if (codegenOperation.vendorExtensions.containsKey("x-spring-paginated")) {
+            codegenOperation.imports.add("Pageable");
+            if (DocumentationProvider.SPRINGFOX.equals(getDocumentationProvider())) {
+                codegenOperation.imports.add("ApiIgnore");
+            }
+            if (DocumentationProvider.SPRINGDOC.equals(getDocumentationProvider())) {
+                codegenOperation.imports.add("ParameterObject");
+            }
+        }
+
+        if (reactive) {
+            if (DocumentationProvider.SPRINGFOX.equals(getDocumentationProvider())) {
+                codegenOperation.imports.add("ApiIgnore");
+            }
+        }
+        return codegenOperation;
+    }
+
     @Override
     public Map<String, Object> postProcessModelsEnum(Map<String, Object> objs) {
         objs = super.postProcessModelsEnum(objs);
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticDocCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticDocCodegen.java
index ce43779dfd7..7e207388852 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticDocCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticDocCodegen.java
@@ -129,4 +129,7 @@ public class StaticDocCodegen extends DefaultCodegen implements CodegenConfig {
         // just return the original string
         return input;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtml2Generator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtml2Generator.java
index 523c7de0d09..a6a2c81328f 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtml2Generator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtml2Generator.java
@@ -286,4 +286,7 @@ public class StaticHtml2Generator extends DefaultCodegen implements CodegenConfi
         // just return the original string
         return input;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtmlGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtmlGenerator.java
index 910528d7498..b3a34018238 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtmlGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtmlGenerator.java
@@ -229,4 +229,6 @@ public class StaticHtmlGenerator extends DefaultCodegen implements CodegenConfig
                 property.unescapedDescription);
     }
 
+    @Override
+    public GeneratorLanguage generatorLanguage() { return null; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift4Codegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift4Codegen.java
deleted file mode 100644
index 0762835b4a5..00000000000
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift4Codegen.java
+++ /dev/null
@@ -1,1094 +0,0 @@
-/*
- * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
- * Copyright 2018 SmartBear Software
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.openapitools.codegen.languages;
-
-import io.swagger.v3.oas.models.media.ArraySchema;
-import io.swagger.v3.oas.models.media.Schema;
-import org.apache.commons.io.FilenameUtils;
-import org.apache.commons.lang3.ArrayUtils;
-import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.lang3.text.WordUtils;
-import org.openapitools.codegen.*;
-import org.openapitools.codegen.meta.GeneratorMetadata;
-import org.openapitools.codegen.meta.Stability;
-import org.openapitools.codegen.meta.features.*;
-import org.openapitools.codegen.utils.ModelUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import java.io.File;
-import java.io.IOException;
-import java.util.*;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import static org.openapitools.codegen.utils.StringUtils.camelize;
-
-public class Swift4Codegen extends DefaultCodegen implements CodegenConfig {
-    private final Logger LOGGER = LoggerFactory.getLogger(Swift4Codegen.class);
-
-    public static final String PROJECT_NAME = "projectName";
-    public static final String RESPONSE_AS = "responseAs";
-    public static final String UNWRAP_REQUIRED = "unwrapRequired";
-    public static final String OBJC_COMPATIBLE = "objcCompatible";
-    public static final String POD_SOURCE = "podSource";
-    public static final String POD_AUTHORS = "podAuthors";
-    public static final String POD_SOCIAL_MEDIA_URL = "podSocialMediaURL";
-    public static final String POD_DOCSET_URL = "podDocsetURL";
-    public static final String POD_LICENSE = "podLicense";
-    public static final String POD_HOMEPAGE = "podHomepage";
-    public static final String POD_SUMMARY = "podSummary";
-    public static final String POD_DESCRIPTION = "podDescription";
-    public static final String POD_SCREENSHOTS = "podScreenshots";
-    public static final String POD_DOCUMENTATION_URL = "podDocumentationURL";
-    public static final String SWIFT_USE_API_NAMESPACE = "swiftUseApiNamespace";
-    public static final String DEFAULT_POD_AUTHORS = "OpenAPI Generator";
-    public static final String LENIENT_TYPE_CAST = "lenientTypeCast";
-    protected static final String LIBRARY_PROMISE_KIT = "PromiseKit";
-    protected static final String LIBRARY_RX_SWIFT = "RxSwift";
-    protected static final String LIBRARY_RESULT = "Result";
-    protected static final String[] RESPONSE_LIBRARIES = {LIBRARY_PROMISE_KIT, LIBRARY_RX_SWIFT, LIBRARY_RESULT};
-    protected String projectName = "OpenAPIClient";
-    protected boolean nonPublicApi = false;
-    protected boolean unwrapRequired;
-    protected boolean objcCompatible = false;
-    protected boolean lenientTypeCast = false;
-    protected boolean swiftUseApiNamespace;
-    protected String[] responseAs = new String[0];
-    protected String sourceFolder = "Classes" + File.separator + "OpenAPIs";
-    protected HashSet objcReservedWords;
-    protected String apiDocPath = "docs/";
-    protected String modelDocPath = "docs/";
-
-    /**
-     * Constructor for the swift4 language codegen module.
-     */
-    public Swift4Codegen() {
-        super();
-
-        modifyFeatureSet(features -> features
-                .wireFormatFeatures(EnumSet.of(WireFormatFeature.JSON))
-                .securityFeatures(EnumSet.of(
-                        SecurityFeature.BasicAuth,
-                        SecurityFeature.ApiKey,
-                        SecurityFeature.OAuth2_Implicit
-                ))
-                .excludeGlobalFeatures(
-                        GlobalFeature.XMLStructureDefinitions,
-                        GlobalFeature.Callbacks,
-                        GlobalFeature.LinkObjects,
-                        GlobalFeature.ParameterStyling
-                )
-                .includeSchemaSupportFeatures(
-                        SchemaSupportFeature.Polymorphism
-                )
-                .excludeParameterFeatures(
-                        ParameterFeature.Cookie
-                )
-        );
-
-        generatorMetadata = GeneratorMetadata.newBuilder(generatorMetadata)
-                .stability(Stability.DEPRECATED)
-                .build();
-
-        outputFolder = "generated-code" + File.separator + "swift";
-        modelTemplateFiles.put("model.mustache", ".swift");
-        apiTemplateFiles.put("api.mustache", ".swift");
-        embeddedTemplateDir = templateDir = "swift4";
-        apiPackage = File.separator + "APIs";
-        modelPackage = File.separator + "Models";
-        modelDocTemplateFiles.put("model_doc.mustache", ".md");
-        apiDocTemplateFiles.put("api_doc.mustache", ".md");
-
-        languageSpecificPrimitives = new HashSet<>(
-                Arrays.asList(
-                        "Int",
-                        "Int32",
-                        "Int64",
-                        "Float",
-                        "Double",
-                        "Bool",
-                        "Void",
-                        "String",
-                        "URL",
-                        "Data",
-                        "Date",
-                        "Character",
-                        "UUID",
-                        "URL",
-                        "AnyObject",
-                        "Any",
-                        "Decimal")
-        );
-        defaultIncludes = new HashSet<>(
-                Arrays.asList(
-                        "Data",
-                        "Date",
-                        "URL", // for file
-                        "UUID",
-                        "Array",
-                        "Dictionary",
-                        "Set",
-                        "Any",
-                        "Empty",
-                        "AnyObject",
-                        "Any",
-                        "Decimal")
-        );
-
-        objcReservedWords = new HashSet<>(
-                Arrays.asList(
-                        // Added for Objective-C compatibility
-                        "id", "description", "NSArray", "NSURL", "CGFloat", "NSSet", "NSString", "NSInteger", "NSUInteger",
-                        "NSError", "NSDictionary",
-                        // Cannot override with a stored property 'className'
-                        "className"
-                        )
-                );
-
-        reservedWords = new HashSet<>(
-                Arrays.asList(
-                        // name used by swift client
-                        "ErrorResponse", "Response",
-
-                        // Swift keywords. This list is taken from here:
-                        // https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/LexicalStructure.html#//apple_ref/doc/uid/TP40014097-CH30-ID410
-                        //
-                        // Keywords used in declarations
-                        "associatedtype", "class", "deinit", "enum", "extension", "fileprivate", "func", "import", "init",
-                        "inout", "internal", "let", "open", "operator", "private", "protocol", "public", "static", "struct",
-                        "subscript", "typealias", "var",
-                        // Keywords uses in statements
-                        "break", "case", "continue", "default", "defer", "do", "else", "fallthrough", "for", "guard", "if",
-                        "in", "repeat", "return", "switch", "where", "while",
-                        // Keywords used in expressions and types
-                        "as", "Any", "catch", "false", "is", "nil", "rethrows", "super", "self", "Self", "throw", "throws", "true", "try",
-                        // Keywords used in patterns
-                        "_",
-                        // Keywords that begin with a number sign
-                        "#available", "#colorLiteral", "#column", "#else", "#elseif", "#endif", "#file", "#fileLiteral", "#function", "#if",
-                        "#imageLiteral", "#line", "#selector", "#sourceLocation",
-                        // Keywords reserved in particular contexts
-                        "associativity", "convenience", "dynamic", "didSet", "final", "get", "infix", "indirect", "lazy", "left",
-                        "mutating", "none", "nonmutating", "optional", "override", "postfix", "precedence", "prefix", "Protocol",
-                        "required", "right", "set", "Type", "unowned", "weak", "willSet",
-
-                        //
-                        // Swift Standard Library types
-                        // https://developer.apple.com/documentation/swift
-                        //
-                        // Numbers and Basic Values
-                        "Bool", "Int", "Double", "Float", "Range", "ClosedRange", "Error", "Optional",
-                        // Special-Use Numeric Types
-                        "UInt", "UInt8", "UInt16", "UInt32", "UInt64", "Int8", "Int16", "Int32", "Int64", "Float80", "Float32", "Float64",
-                        // Strings and Text
-                        "String", "Character", "Unicode", "StaticString",
-                        // Collections
-                        "Array", "Dictionary", "Set", "OptionSet", "CountableRange", "CountableClosedRange",
-
-                        // The following are commonly-used Foundation types
-                        "URL", "Data", "Codable", "Encodable", "Decodable",
-
-                        // The following are other words we want to reserve
-                        "Void", "AnyObject", "Class", "dynamicType", "COLUMN", "FILE", "FUNCTION", "LINE"
-                )
-        );
-
-        typeMapping = new HashMap<>();
-        typeMapping.put("array", "Array");
-        typeMapping.put("List", "Array");
-        typeMapping.put("map", "Dictionary");
-        typeMapping.put("date", "Date");
-        typeMapping.put("Date", "Date");
-        typeMapping.put("DateTime", "Date");
-        typeMapping.put("boolean", "Bool");
-        typeMapping.put("string", "String");
-        typeMapping.put("char", "Character");
-        typeMapping.put("short", "Int");
-        typeMapping.put("int", "Int");
-        typeMapping.put("long", "Int64");
-        typeMapping.put("integer", "Int");
-        typeMapping.put("Integer", "Int");
-        typeMapping.put("float", "Float");
-        typeMapping.put("number", "Double");
-        typeMapping.put("double", "Double");
-        typeMapping.put("file", "URL");
-        typeMapping.put("binary", "URL");
-        typeMapping.put("ByteArray", "Data");
-        typeMapping.put("UUID", "UUID");
-        typeMapping.put("URI", "String");
-        typeMapping.put("decimal", "Decimal");
-        typeMapping.put("object", "Any");
-        typeMapping.put("AnyType", "Any");
-
-        importMapping = new HashMap<>();
-
-        cliOptions.add(new CliOption(PROJECT_NAME, "Project name in Xcode"));
-        cliOptions.add(new CliOption(RESPONSE_AS,
-                "Optionally use libraries to manage response.  Currently "
-                        + StringUtils.join(RESPONSE_LIBRARIES, ", ")
-                        + " are available."));
-        cliOptions.add(new CliOption(CodegenConstants.NON_PUBLIC_API,
-                CodegenConstants.NON_PUBLIC_API_DESC
-                        + "(default: false)"));
-        cliOptions.add(new CliOption(UNWRAP_REQUIRED,
-                "Treat 'required' properties in response as non-optional "
-                        + "(which would crash the app if api returns null as opposed "
-                        + "to required option specified in json schema"));
-        cliOptions.add(new CliOption(OBJC_COMPATIBLE,
-                "Add additional properties and methods for Objective-C "
-                        + "compatibility (default: false)"));
-        cliOptions.add(new CliOption(POD_SOURCE, "Source information used for Podspec"));
-        cliOptions.add(new CliOption(CodegenConstants.POD_VERSION, "Version used for Podspec"));
-        cliOptions.add(new CliOption(POD_AUTHORS, "Authors used for Podspec"));
-        cliOptions.add(new CliOption(POD_SOCIAL_MEDIA_URL, "Social Media URL used for Podspec"));
-        cliOptions.add(new CliOption(POD_DOCSET_URL, "Docset URL used for Podspec"));
-        cliOptions.add(new CliOption(POD_LICENSE, "License used for Podspec"));
-        cliOptions.add(new CliOption(POD_HOMEPAGE, "Homepage used for Podspec"));
-        cliOptions.add(new CliOption(POD_SUMMARY, "Summary used for Podspec"));
-        cliOptions.add(new CliOption(POD_DESCRIPTION, "Description used for Podspec"));
-        cliOptions.add(new CliOption(POD_SCREENSHOTS, "Screenshots used for Podspec"));
-        cliOptions.add(new CliOption(POD_DOCUMENTATION_URL,
-                "Documentation URL used for Podspec"));
-        cliOptions.add(new CliOption(SWIFT_USE_API_NAMESPACE,
-                "Flag to make all the API classes inner-class "
-                        + "of {{projectName}}API"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
-                .defaultValue(Boolean.TRUE.toString()));
-        cliOptions.add(new CliOption(LENIENT_TYPE_CAST,
-                "Accept and cast values for simple types (string->bool, "
-                        + "string->int, int->string)")
-                .defaultValue(Boolean.FALSE.toString()));
-    }
-
-    private static CodegenModel reconcileProperties(CodegenModel codegenModel,
-                                                    CodegenModel parentCodegenModel) {
-        // To support inheritance in this generator, we will analyze
-        // the parent and child models, look for properties that match, and remove
-        // them from the child models and leave them in the parent.
-        // Because the child models extend the parents, the properties
-        // will be available via the parent.
-
-        // Get the properties for the parent and child models
-        final List<CodegenProperty> parentModelCodegenProperties = parentCodegenModel.vars;
-        List<CodegenProperty> codegenProperties = codegenModel.vars;
-        codegenModel.allVars = new ArrayList<CodegenProperty>(codegenProperties);
-        codegenModel.parentVars = parentCodegenModel.allVars;
-
-        // Iterate over all of the parent model properties
-        boolean removedChildProperty = false;
-
-        for (CodegenProperty parentModelCodegenProperty : parentModelCodegenProperties) {
-            // Now that we have found a prop in the parent class,
-            // and search the child class for the same prop.
-            Iterator<CodegenProperty> iterator = codegenProperties.iterator();
-            while (iterator.hasNext()) {
-                CodegenProperty codegenProperty = iterator.next();
-                if (codegenProperty.baseName.equals(parentModelCodegenProperty.baseName)) {
-                    // We found a property in the child class that is
-                    // a duplicate of the one in the parent, so remove it.
-                    iterator.remove();
-                    removedChildProperty = true;
-                }
-            }
-        }
-
-        if (removedChildProperty) {
-            codegenModel.vars = codegenProperties;
-        }
-
-
-        return codegenModel;
-    }
-
-    @Override
-    public CodegenType getTag() {
-        return CodegenType.CLIENT;
-    }
-
-    @Override
-    public String getName() {
-        return "swift4-deprecated";
-    }
-
-    @Override
-    public String getHelp() {
-        return "Generates a Swift 4.x client library (Deprecated and will be removed in 5.x releases. Please use `swift5` instead.)";
-    }
-
-    @Override
-    protected void addAdditionPropertiesToCodeGenModel(CodegenModel codegenModel,
-                                                       Schema schema) {
-
-        final Schema additionalProperties = getAdditionalProperties(schema);
-
-        if (additionalProperties != null) {
-            codegenModel.additionalPropertiesType = getSchemaType(additionalProperties);
-        }
-    }
-
-    @Override
-    public void processOpts() {
-        super.processOpts();
-
-        if (StringUtils.isEmpty(System.getenv("SWIFT_POST_PROCESS_FILE"))) {
-            LOGGER.info("Environment variable SWIFT_POST_PROCESS_FILE not defined so the Swift code may not be properly formatted. To define it, try 'export SWIFT_POST_PROCESS_FILE=/usr/local/bin/swiftformat' (Linux/Mac)");
-            LOGGER.info("NOTE: To enable file post-processing, 'enablePostProcessFile' must be set to `true` (--enable-post-process-file for CLI).");
-        }
-
-        // Setup project name
-        if (additionalProperties.containsKey(PROJECT_NAME)) {
-            setProjectName((String) additionalProperties.get(PROJECT_NAME));
-        } else {
-            additionalProperties.put(PROJECT_NAME, projectName);
-        }
-        sourceFolder = projectName + File.separator + sourceFolder;
-
-        // Setup nonPublicApi option, which generates code with reduced access
-        // modifiers; allows embedding elsewhere without exposing non-public API calls
-        // to consumers
-        if (additionalProperties.containsKey(CodegenConstants.NON_PUBLIC_API)) {
-            setNonPublicApi(convertPropertyToBooleanAndWriteBack(CodegenConstants.NON_PUBLIC_API));
-        }
-        additionalProperties.put(CodegenConstants.NON_PUBLIC_API, nonPublicApi);
-
-        // Setup unwrapRequired option, which makes all the
-        // properties with "required" non-optional
-        if (additionalProperties.containsKey(UNWRAP_REQUIRED)) {
-            setUnwrapRequired(convertPropertyToBooleanAndWriteBack(UNWRAP_REQUIRED));
-        }
-        additionalProperties.put(UNWRAP_REQUIRED, unwrapRequired);
-
-        // Setup objcCompatible option, which adds additional properties
-        // and methods for Objective-C compatibility
-        if (additionalProperties.containsKey(OBJC_COMPATIBLE)) {
-            setObjcCompatible(convertPropertyToBooleanAndWriteBack(OBJC_COMPATIBLE));
-        }
-        additionalProperties.put(OBJC_COMPATIBLE, objcCompatible);
-
-        // add objc reserved words
-        if (Boolean.TRUE.equals(objcCompatible)) {
-            reservedWords.addAll(objcReservedWords);
-        }
-
-        // Setup unwrapRequired option, which makes all the properties with "required" non-optional
-        if (additionalProperties.containsKey(RESPONSE_AS)) {
-            Object responseAsObject = additionalProperties.get(RESPONSE_AS);
-            if (responseAsObject instanceof String) {
-                setResponseAs(((String) responseAsObject).split(","));
-            } else {
-                setResponseAs((String[]) responseAsObject);
-            }
-        }
-        additionalProperties.put(RESPONSE_AS, responseAs);
-        if (ArrayUtils.contains(responseAs, LIBRARY_PROMISE_KIT)) {
-            additionalProperties.put("usePromiseKit", true);
-        }
-        if (ArrayUtils.contains(responseAs, LIBRARY_RX_SWIFT)) {
-            additionalProperties.put("useRxSwift", true);
-        }
-        if (ArrayUtils.contains(responseAs, LIBRARY_RESULT)) {
-            additionalProperties.put("useResult", true);
-        }
-
-        // Setup swiftUseApiNamespace option, which makes all the API
-        // classes inner-class of {{projectName}}API
-        if (additionalProperties.containsKey(SWIFT_USE_API_NAMESPACE)) {
-            setSwiftUseApiNamespace(convertPropertyToBooleanAndWriteBack(SWIFT_USE_API_NAMESPACE));
-        }
-
-        if (!additionalProperties.containsKey(POD_AUTHORS)) {
-            additionalProperties.put(POD_AUTHORS, DEFAULT_POD_AUTHORS);
-        }
-
-        setLenientTypeCast(convertPropertyToBooleanAndWriteBack(LENIENT_TYPE_CAST));
-
-        // make api and model doc path available in mustache template
-        additionalProperties.put("apiDocPath", apiDocPath);
-        additionalProperties.put("modelDocPath", modelDocPath);
-
-        supportingFiles.add(new SupportingFile("Podspec.mustache",
-                "",
-                projectName + ".podspec"));
-        supportingFiles.add(new SupportingFile("Cartfile.mustache",
-                "",
-                "Cartfile"));
-        supportingFiles.add(new SupportingFile("Package.swift.mustache",
-                "",
-                "Package.swift"));
-        supportingFiles.add(new SupportingFile("APIHelper.mustache",
-                sourceFolder,
-                "APIHelper.swift"));
-        supportingFiles.add(new SupportingFile("AlamofireImplementations.mustache",
-                sourceFolder,
-                "AlamofireImplementations.swift"));
-        supportingFiles.add(new SupportingFile("Configuration.mustache",
-                sourceFolder,
-                "Configuration.swift"));
-        supportingFiles.add(new SupportingFile("Extensions.mustache",
-                sourceFolder,
-                "Extensions.swift"));
-        supportingFiles.add(new SupportingFile("Models.mustache",
-                sourceFolder,
-                "Models.swift"));
-        supportingFiles.add(new SupportingFile("APIs.mustache",
-                sourceFolder,
-                "APIs.swift"));
-        supportingFiles.add(new SupportingFile("CodableHelper.mustache",
-                sourceFolder,
-                "CodableHelper.swift"));
-        supportingFiles.add(new SupportingFile("JSONEncodableEncoding.mustache",
-                sourceFolder,
-                "JSONEncodableEncoding.swift"));
-        supportingFiles.add(new SupportingFile("JSONEncodingHelper.mustache",
-                sourceFolder,
-                "JSONEncodingHelper.swift"));
-        if (ArrayUtils.contains(responseAs, LIBRARY_RESULT)) {
-            supportingFiles.add(new SupportingFile("Result.mustache",
-                    sourceFolder,
-                    "Result.swift"));
-        }
-        supportingFiles.add(new SupportingFile("git_push.sh.mustache",
-                "",
-                "git_push.sh"));
-        supportingFiles.add(new SupportingFile("gitignore.mustache",
-                "",
-                ".gitignore"));
-        supportingFiles.add(new SupportingFile("README.mustache",
-                "",
-                "README.md"));
-        supportingFiles.add(new SupportingFile("XcodeGen.mustache",
-                "",
-                "project.yml"));
-
-    }
-
-    @Override
-    protected boolean isReservedWord(String word) {
-        return word != null && reservedWords.contains(word); //don't lowercase as super does
-    }
-
-    @Override
-    public String escapeReservedWord(String name) {
-        if (this.reservedWordsMappings().containsKey(name)) {
-            return this.reservedWordsMappings().get(name);
-        }
-        return "_" + name;  // add an underscore to the name
-    }
-
-    @Override
-    public String modelFileFolder() {
-        return outputFolder + File.separator + sourceFolder
-                + modelPackage().replace('.', File.separatorChar);
-    }
-
-    @Override
-    public String apiFileFolder() {
-        return outputFolder + File.separator + sourceFolder
-                + apiPackage().replace('.', File.separatorChar);
-    }
-
-    @Override
-    public String getTypeDeclaration(Schema p) {
-        if (ModelUtils.isArraySchema(p)) {
-            ArraySchema ap = (ArraySchema) p;
-            Schema inner = ap.getItems();
-            return "[" + getTypeDeclaration(inner) + "]";
-        } else if (ModelUtils.isMapSchema(p)) {
-            Schema inner = getAdditionalProperties(p);
-            return "[String:" + getTypeDeclaration(inner) + "]";
-        }
-        return super.getTypeDeclaration(p);
-    }
-
-    @Override
-    public String getSchemaType(Schema p) {
-        String openAPIType = super.getSchemaType(p);
-        String type;
-        if (typeMapping.containsKey(openAPIType)) {
-            type = typeMapping.get(openAPIType);
-            if (languageSpecificPrimitives.contains(type) || defaultIncludes.contains(type)) {
-                return type;
-            }
-        } else {
-            type = openAPIType;
-        }
-        return toModelName(type);
-    }
-
-    @Override
-    public boolean isDataTypeFile(String dataType) {
-        return "URL".equals(dataType);
-    }
-
-    @Override
-    public boolean isDataTypeBinary(final String dataType) {
-        return "Data".equals(dataType);
-    }
-
-    /**
-     * Output the proper model name (capitalized).
-     *
-     * @param name the name of the model
-     * @return capitalized model name
-     */
-    @Override
-    public String toModelName(String name) {
-        // FIXME parameter should not be assigned. Also declare it as "final"
-        name = sanitizeName(name);
-
-        if (!StringUtils.isEmpty(modelNameSuffix)) { // set model suffix
-            name = name + "_" + modelNameSuffix;
-        }
-
-        if (!StringUtils.isEmpty(modelNamePrefix)) { // set model prefix
-            name = modelNamePrefix + "_" + name;
-        }
-
-        // camelize the model name
-        // phone_number => PhoneNumber
-        name = camelize(name);
-
-        // model name cannot use reserved keyword, e.g. return
-        if (isReservedWord(name)) {
-            String modelName = "Model" + name;
-            LOGGER.warn("{} (reserved word) cannot be used as model name. Renamed to {}", name, modelName);
-            return modelName;
-        }
-
-        // model name starts with number
-        if (name.matches("^\\d.*")) {
-            // e.g. 200Response => Model200Response (after camelize)
-            String modelName = "Model" + name;
-            LOGGER.warn("{} (model name starts with number) cannot be used as model name. Renamed to {}", name,
-                    modelName);
-            return modelName;
-        }
-
-        return name;
-    }
-
-    /**
-     * Return the capitalized file name of the model.
-     *
-     * @param name the model name
-     * @return the file name of the model
-     */
-    @Override
-    public String toModelFilename(String name) {
-        // should be the same as the model name
-        return toModelName(name);
-    }
-
-    @Override
-    public String toDefaultValue(Schema p) {
-        if (p.getEnum() != null && !p.getEnum().isEmpty()) {
-            if (p.getDefault() != null) {
-                if (ModelUtils.isStringSchema(p)) {
-                    return "." + toEnumVarName(escapeText((String) p.getDefault()), p.getType());
-                } else {
-                    return "." + toEnumVarName(escapeText(p.getDefault().toString()), p.getType());
-                }
-            }
-        }
-        if (ModelUtils.isIntegerSchema(p) || ModelUtils.isNumberSchema(p) || ModelUtils.isBooleanSchema(p)) {
-            if (p.getDefault() != null) {
-                return p.getDefault().toString();
-            }
-        } else if (ModelUtils.isStringSchema(p)) {
-            if (p.getDefault() != null) {
-                return "\"" + escapeText((String) p.getDefault()) + "\"";
-            }
-        }
-        return null;
-    }
-
-    @Override
-    public String toInstantiationType(Schema p) {
-        if (ModelUtils.isMapSchema(p)) {
-            return getSchemaType(getAdditionalProperties(p));
-        } else if (ModelUtils.isArraySchema(p)) {
-            ArraySchema ap = (ArraySchema) p;
-            String inner = getSchemaType(ap.getItems());
-            return "[" + inner + "]";
-        }
-        return null;
-    }
-
-    @Override
-    public String toApiName(String name) {
-        if (name.length() == 0) {
-            return "DefaultAPI";
-        }
-        return camelize(name) + "API";
-    }
-
-    @Override
-    public String apiDocFileFolder() {
-        return (outputFolder + "/" + apiDocPath).replace("/", File.separator);
-    }
-
-    @Override
-    public String modelDocFileFolder() {
-        return (outputFolder + "/" + modelDocPath).replace("/", File.separator);
-    }
-
-    @Override
-    public String toModelDocFilename(String name) {
-        return toModelName(name);
-    }
-
-    @Override
-    public String toApiDocFilename(String name) {
-        return toApiName(name);
-    }
-
-    @Override
-    public String toOperationId(String operationId) {
-        operationId = camelize(sanitizeName(operationId), true);
-
-        // Throw exception if method name is empty.
-        // This should not happen but keep the check just in case
-        if (StringUtils.isEmpty(operationId)) {
-            throw new RuntimeException("Empty method name (operationId) not allowed");
-        }
-
-        // method name cannot use reserved keyword, e.g. return
-        if (isReservedWord(operationId)) {
-            String newOperationId = camelize(("call_" + operationId), true);
-            LOGGER.warn("{} (reserved word) cannot be used as method name. Renamed to {}", operationId, newOperationId);
-            return newOperationId;
-        }
-
-        // operationId starts with a number
-        if (operationId.matches("^\\d.*")) {
-            LOGGER.warn("{} (starting with a number) cannot be used as method name. Renamed to {}", operationId, camelize(sanitizeName("call_" + operationId), true));
-            operationId = camelize(sanitizeName("call_" + operationId), true);
-        }
-
-
-        return operationId;
-    }
-
-    @Override
-    public String toVarName(String name) {
-        // sanitize name
-        name = sanitizeName(name);
-
-        // if it's all upper case, do nothing
-        if (name.matches("^[A-Z_]*$")) {
-            return name;
-        }
-
-        // camelize the variable name
-        // pet_id => petId
-        name = camelize(name, true);
-
-        // for reserved word or word starting with number, append _
-        if (isReservedWord(name) || name.matches("^\\d.*")) {
-            name = escapeReservedWord(name);
-        }
-
-        return name;
-    }
-
-    @Override
-    public String toParamName(String name) {
-        // sanitize name
-        name = sanitizeName(name);
-
-        // replace - with _ e.g. created-at => created_at
-        name = name.replaceAll("-", "_");
-
-        // if it's all upper case, do nothing
-        if (name.matches("^[A-Z_]*$")) {
-            return name;
-        }
-
-        // camelize(lower) the variable name
-        // pet_id => petId
-        name = camelize(name, true);
-
-        // for reserved word or word starting with number, append _
-        if (isReservedWord(name) || name.matches("^\\d.*")) {
-            name = escapeReservedWord(name);
-        }
-
-        return name;
-    }
-
-    @Override
-    public CodegenModel fromModel(String name, Schema model) {
-        Map<String, Schema> allDefinitions = ModelUtils.getSchemas(this.openAPI);
-        CodegenModel codegenModel = super.fromModel(name, model);
-        if (codegenModel.description != null) {
-            codegenModel.imports.add("ApiModel");
-        }
-        if (allDefinitions != null) {
-            String parentSchema = codegenModel.parentSchema;
-
-            // multilevel inheritance: reconcile properties of all the parents
-            while (parentSchema != null) {
-                final Schema parentModel = allDefinitions.get(parentSchema);
-                final CodegenModel parentCodegenModel = super.fromModel(codegenModel.parent,
-                        parentModel);
-                codegenModel = Swift4Codegen.reconcileProperties(codegenModel, parentCodegenModel);
-
-                // get the next parent
-                parentSchema = parentCodegenModel.parentSchema;
-            }
-        }
-
-        return codegenModel;
-    }
-
-    public void setProjectName(String projectName) {
-        this.projectName = projectName;
-    }
-
-    public void setNonPublicApi(boolean nonPublicApi) {
-        this.nonPublicApi = nonPublicApi;
-    }
-
-    public void setUnwrapRequired(boolean unwrapRequired) {
-        this.unwrapRequired = unwrapRequired;
-    }
-
-    public void setObjcCompatible(boolean objcCompatible) {
-        this.objcCompatible = objcCompatible;
-    }
-
-    public void setLenientTypeCast(boolean lenientTypeCast) {
-        this.lenientTypeCast = lenientTypeCast;
-    }
-
-    public void setResponseAs(String[] responseAs) {
-        this.responseAs = responseAs;
-    }
-
-    public void setSwiftUseApiNamespace(boolean swiftUseApiNamespace) {
-        this.swiftUseApiNamespace = swiftUseApiNamespace;
-    }
-
-    @Override
-    public String toEnumValue(String value, String datatype) {
-        // for string, array of string
-        if ("String".equals(datatype) || "[String]".equals(datatype) || "[String:String]".equals(datatype)) {
-            return "\"" + value + "\"";
-        } else {
-            return String.valueOf(value);
-        }
-    }
-
-    @Override
-    public String toEnumDefaultValue(String value, String datatype) {
-        return datatype + "_" + value;
-    }
-
-    @Override
-    public String toEnumVarName(String name, String datatype) {
-        if (name.length() == 0) {
-            return "empty";
-        }
-
-        Pattern startWithNumberPattern = Pattern.compile("^\\d+");
-        Matcher startWithNumberMatcher = startWithNumberPattern.matcher(name);
-        if (startWithNumberMatcher.find()) {
-            String startingNumbers = startWithNumberMatcher.group(0);
-            String nameWithoutStartingNumbers = name.substring(startingNumbers.length());
-
-            return "_" + startingNumbers + camelize(nameWithoutStartingNumbers, true);
-        }
-
-        // for symbol, e.g. $, #
-        if (getSymbolName(name) != null) {
-            return camelize(WordUtils.capitalizeFully(getSymbolName(name).toUpperCase(Locale.ROOT)), true);
-        }
-
-        // Camelize only when we have a structure defined below
-        Boolean camelized = false;
-        if (name.matches("[A-Z][a-z0-9]+[a-zA-Z0-9]*")) {
-            name = camelize(name, true);
-            camelized = true;
-        }
-
-        // Reserved Name
-        String nameLowercase = StringUtils.lowerCase(name);
-        if (isReservedWord(nameLowercase)) {
-            return escapeReservedWord(nameLowercase);
-        }
-
-        // Check for numerical conversions
-        if ("Int".equals(datatype) || "Int32".equals(datatype) || "Int64".equals(datatype)
-                || "Float".equals(datatype) || "Double".equals(datatype)) {
-            String varName = "number" + camelize(name);
-            varName = varName.replaceAll("-", "minus");
-            varName = varName.replaceAll("\\+", "plus");
-            varName = varName.replaceAll("\\.", "dot");
-            return varName;
-        }
-
-        // If we have already camelized the word, don't progress
-        // any further
-        if (camelized) {
-            return name;
-        }
-
-        char[] separators = {'-', '_', ' ', ':', '(', ')'};
-        return camelize(WordUtils.capitalizeFully(StringUtils.lowerCase(name), separators)
-                        .replaceAll("[-_ :\\(\\)]", ""),
-                true);
-    }
-
-    @Override
-    public String toEnumName(CodegenProperty property) {
-        String enumName = toModelName(property.name);
-
-        // Ensure that the enum type doesn't match a reserved word or
-        // the variable name doesn't match the generated enum type or the
-        // Swift compiler will generate an error
-        if (isReservedWord(property.datatypeWithEnum)
-                || toVarName(property.name).equals(property.datatypeWithEnum)) {
-            enumName = property.datatypeWithEnum + "Enum";
-        }
-
-        // TODO: toModelName already does something for names starting with number,
-        // so this code is probably never called
-        if (enumName.matches("\\d.*")) { // starts with number
-            return "_" + enumName;
-        } else {
-            return enumName;
-        }
-    }
-
-    @Override
-    public Map<String, Object> postProcessModels(Map<String, Object> objs) {
-        Map<String, Object> postProcessedModelsEnum = postProcessModelsEnum(objs);
-
-        // We iterate through the list of models, and also iterate through each of the
-        // properties for each model. For each property, if:
-        //
-        // CodegenProperty.name != CodegenProperty.baseName
-        //
-        // then we set
-        //
-        // CodegenProperty.vendorExtensions["x-codegen-escaped-property-name"] = true
-        //
-        // Also, if any property in the model has x-codegen-escaped-property-name=true, then we mark:
-        //
-        // CodegenModel.vendorExtensions["x-codegen-has-escaped-property-names"] = true
-        //
-        List<Object> models = (List<Object>) postProcessedModelsEnum.get("models");
-        for (Object _mo : models) {
-            Map<String, Object> mo = (Map<String, Object>) _mo;
-            CodegenModel cm = (CodegenModel) mo.get("model");
-            boolean modelHasPropertyWithEscapedName = false;
-            for (CodegenProperty prop : cm.allVars) {
-                if (!prop.name.equals(prop.baseName)) {
-                    prop.vendorExtensions.put("x-codegen-escaped-property-name", true);
-                    modelHasPropertyWithEscapedName = true;
-                }
-            }
-            if (modelHasPropertyWithEscapedName) {
-                cm.vendorExtensions.put("x-codegen-has-escaped-property-names", true);
-            }
-        }
-
-        return postProcessedModelsEnum;
-    }
-
-    @Override
-    public void postProcessModelProperty(CodegenModel model, CodegenProperty property) {
-        super.postProcessModelProperty(model, property);
-
-        // The default template code has the following logic for
-        // assigning a type as Swift Optional:
-        //
-        // {{^unwrapRequired}}?{{/unwrapRequired}}
-        // {{#unwrapRequired}}{{^required}}?{{/required}}{{/unwrapRequired}}
-        //
-        // which means:
-        //
-        // boolean isSwiftOptional = !unwrapRequired || (unwrapRequired && !property.required);
-        //
-        // We can drop the check for unwrapRequired in (unwrapRequired && !property.required)
-        // due to short-circuit evaluation of the || operator.
-        boolean isSwiftOptional = !unwrapRequired || !property.required;
-        boolean isSwiftScalarType = property.isInteger || property.isLong || property.isFloat
-                || property.isDouble || property.isBoolean;
-        if (isSwiftOptional && isSwiftScalarType) {
-            // Optional scalar types like Int?, Int64?, Float?, Double?, and Bool?
-            // do not translate to Objective-C. So we want to flag those
-            // properties in case we want to put special code in the templates
-            // which provide Objective-C compatibility.
-            property.vendorExtensions.put("x-swift-optional-scalar", true);
-        }
-    }
-
-    @Override
-    public String escapeQuotationMark(String input) {
-        // remove " to avoid code injection
-        return input.replace("\"", "");
-    }
-
-    @Override
-    public String escapeUnsafeCharacters(String input) {
-        return input.replace("*/", "*_/").replace("/*", "/_*");
-    }
-
-    @Override
-    public void postProcessFile(File file, String fileType) {
-        if (file == null) {
-            return;
-        }
-        String swiftPostProcessFile = System.getenv("SWIFT_POST_PROCESS_FILE");
-        if (StringUtils.isEmpty(swiftPostProcessFile)) {
-            return; // skip if SWIFT_POST_PROCESS_FILE env variable is not defined
-        }
-        // only process files with swift extension
-        if ("swift".equals(FilenameUtils.getExtension(file.toString()))) {
-            String command = swiftPostProcessFile + " " + file;
-            try {
-                Process p = Runtime.getRuntime().exec(command);
-                int exitValue = p.waitFor();
-                if (exitValue != 0) {
-                    LOGGER.error("Error running the command ({}). Exit value: {}", command, exitValue);
-                } else {
-                    LOGGER.info("Successfully executed: {}", command);
-                }
-            } catch (InterruptedException | IOException e) {
-                LOGGER.error("Error running the command ({}). Exception: {}", command, e.getMessage());
-                // Restore interrupted state
-                Thread.currentThread().interrupt();
-            }
-        }
-    }
-
-    @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<Object> allModels) {
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-
-        HashMap<String, CodegenModel> modelMaps = new HashMap<String, CodegenModel>();
-        for (Object o : allModels) {
-            HashMap<String, Object> h = (HashMap<String, Object>) o;
-            CodegenModel m = (CodegenModel) h.get("model");
-            modelMaps.put(m.classname, m);
-        }
-
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
-        for (CodegenOperation operation : operations) {
-            for (CodegenParameter cp : operation.allParams) {
-                cp.vendorExtensions.put("x-swift-example", constructExampleCode(cp, modelMaps));
-            }
-        }
-        return objs;
-    }
-
-    public String constructExampleCode(CodegenParameter codegenParameter, HashMap<String, CodegenModel> modelMaps) {
-        if (codegenParameter.isArray) { // array
-            return "[" + constructExampleCode(codegenParameter.items, modelMaps) + "]";
-        } else if (codegenParameter.isMap) { // TODO: map, file type
-            return "\"TODO\"";
-        } else if (languageSpecificPrimitives.contains(codegenParameter.dataType)) { // primitive type
-            if ("String".equals(codegenParameter.dataType) || "Character".equals(codegenParameter.dataType)) {
-                if (StringUtils.isEmpty(codegenParameter.example)) {
-                    return "\"" + codegenParameter.example + "\"";
-                } else {
-                    return "\"" + codegenParameter.paramName + "_example\"";
-                }
-            } else if ("Bool".equals(codegenParameter.dataType)) { // boolean
-                if (Boolean.parseBoolean(codegenParameter.example)) {
-                    return "true";
-                } else {
-                    return "false";
-                }
-            } else if ("URL".equals(codegenParameter.dataType)) { // URL
-                return "URL(string: \"https://example.com\")!";
-            } else if ("Date".equals(codegenParameter.dataType)) { // date
-                return "Date()";
-            } else { // numeric
-                if (StringUtils.isEmpty(codegenParameter.example)) {
-                    return codegenParameter.example;
-                } else {
-                    return "987";
-                }
-            }
-        } else { // model
-            // look up the model
-            if (modelMaps.containsKey(codegenParameter.dataType)) {
-                return constructExampleCode(modelMaps.get(codegenParameter.dataType), modelMaps);
-            } else {
-                //LOGGER.error("Error in constructing examples. Failed to look up the model " + codegenParameter.dataType);
-                return "TODO";
-            }
-        }
-    }
-
-    public String constructExampleCode(CodegenProperty codegenProperty, HashMap<String, CodegenModel> modelMaps) {
-        if (codegenProperty.isArray) { // array
-            return "[" + constructExampleCode(codegenProperty.items, modelMaps) + "]";
-        } else if (codegenProperty.isMap) { // TODO: map, file type
-            return "\"TODO\"";
-        } else if (languageSpecificPrimitives.contains(codegenProperty.dataType)) { // primitive type
-            if ("String".equals(codegenProperty.dataType) || "Character".equals(codegenProperty.dataType)) {
-                if (StringUtils.isEmpty(codegenProperty.example)) {
-                    return "\"" + codegenProperty.example + "\"";
-                } else {
-                    return "\"" + codegenProperty.name + "_example\"";
-                }
-            } else if ("Bool".equals(codegenProperty.dataType)) { // boolean
-                if (Boolean.parseBoolean(codegenProperty.example)) {
-                    return "true";
-                } else {
-                    return "false";
-                }
-            } else if ("URL".equals(codegenProperty.dataType)) { // URL
-                return "URL(string: \"https://example.com\")!";
-            } else if ("Date".equals(codegenProperty.dataType)) { // date
-                return "Date()";
-            } else { // numeric
-                if (StringUtils.isEmpty(codegenProperty.example)) {
-                    return codegenProperty.example;
-                } else {
-                    return "123";
-                }
-            }
-        } else {
-            // look up the model
-            if (modelMaps.containsKey(codegenProperty.dataType)) {
-                return constructExampleCode(modelMaps.get(codegenProperty.dataType), modelMaps);
-            } else {
-                //LOGGER.error("Error in constructing examples. Failed to look up the model " + codegenProperty.dataType);
-                return "\"TODO\"";
-            }
-        }
-    }
-
-    public String constructExampleCode(CodegenModel codegenModel, HashMap<String, CodegenModel> modelMaps) {
-        String example;
-        example = codegenModel.name + "(";
-        List<String> propertyExamples = new ArrayList<>();
-        for (CodegenProperty codegenProperty : codegenModel.vars) {
-            propertyExamples.add(codegenProperty.name + ": " + constructExampleCode(codegenProperty, modelMaps));
-        }
-        example += StringUtils.join(propertyExamples, ", ");
-        example += ")";
-        return example;
-    }
-}
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java
index b853bf351cc..ed0dc45e1b9 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java
@@ -1320,4 +1320,7 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
         System.out.println("# Please support his work directly via https://paypal.com/paypalme/4brunu \uD83D\uDE4F   #");
         System.out.println("################################################################################");
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.SWIFT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java
index 539313d513c..d76292d4741 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java
@@ -34,8 +34,11 @@ public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodege
     public static final String WITHOUT_PREFIX_ENUMS = "withoutPrefixEnums";
     public static final String USE_SINGLE_REQUEST_PARAMETER = "useSingleRequestParameter";
     public static final String WITH_NODE_IMPORTS = "withNodeImports";
+    public static final String STRING_ENUMS = "stringEnums";
+    public static final String STRING_ENUMS_DESC = "Generate string enums instead of objects for enum values.";
 
     protected String npmRepository = null;
+    protected Boolean stringEnums = false;
 
     private String tsModelPackage = "";
 
@@ -57,6 +60,7 @@ public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodege
         this.cliOptions.add(new CliOption(WITHOUT_PREFIX_ENUMS, "Don't prefix enum names with class names", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
         this.cliOptions.add(new CliOption(USE_SINGLE_REQUEST_PARAMETER, "Setting this property to true will generate functions with a single argument containing all API endpoint parameters instead of one argument per parameter.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
         this.cliOptions.add(new CliOption(WITH_NODE_IMPORTS, "Setting this property to true adds imports for NodeJS", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
+        this.cliOptions.add(new CliOption(STRING_ENUMS, STRING_ENUMS_DESC).defaultValue(String.valueOf(this.stringEnums)));
         // Templates have no mapping between formatted property names and original base names so use only "original" and remove this option
         removeOption(CodegenConstants.MODEL_PROPERTY_NAMING);
     }
@@ -127,6 +131,11 @@ public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodege
             }
         }
 
+        if (additionalProperties.containsKey(STRING_ENUMS)) {
+            this.stringEnums = Boolean.parseBoolean(additionalProperties.get(STRING_ENUMS).toString());
+            additionalProperties.put("stringEnums", this.stringEnums);
+        }
+
         if (additionalProperties.containsKey(NPM_NAME)) {
             addNpmPackageGeneration();
         }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptClientCodegen.java
index d371f617718..51cc382c09d 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptClientCodegen.java
@@ -1573,4 +1573,7 @@ public class TypeScriptClientCodegen extends DefaultCodegen implements CodegenCo
             }
         }
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.TYPESCRIPT; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java
index bc0a2808aad..8924e3b0b62 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java
@@ -47,7 +47,7 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
     private boolean prefixParameterInterfaces = false;
     protected boolean addedApiIndex = false;
     protected boolean addedModelIndex = false;
-    protected boolean typescriptThreePlus = false;
+    protected boolean typescriptThreePlus = true;
     protected boolean withoutRuntimeChecks = false;
 
     // "Saga and Record" mode.
@@ -93,7 +93,7 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         this.cliOptions.add(new CliOption(WITH_INTERFACES, "Setting this property to true will generate interfaces next to the default class implementations.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
         this.cliOptions.add(new CliOption(CodegenConstants.USE_SINGLE_REQUEST_PARAMETER, CodegenConstants.USE_SINGLE_REQUEST_PARAMETER_DESC, SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.TRUE.toString()));
         this.cliOptions.add(new CliOption(PREFIX_PARAMETER_INTERFACES, "Setting this property to true will generate parameter interface declarations prefixed with API class name to avoid name conflicts.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
-        this.cliOptions.add(new CliOption(TYPESCRIPT_THREE_PLUS, "Setting this property to true will generate TypeScript 3.6+ compatible code.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
+        this.cliOptions.add(new CliOption(TYPESCRIPT_THREE_PLUS, "Setting this property to true will generate TypeScript 3.6+ compatible code.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.TRUE.toString()));
         this.cliOptions.add(new CliOption(WITHOUT_RUNTIME_CHECKS, "Setting this property to true will remove any runtime checks on the request and response payloads. Payloads will be casted to their expected types.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
         this.cliOptions.add(new CliOption(SAGAS_AND_RECORDS, "Setting this property to true will generate additional files for use with redux-saga and immutablejs.", SchemaTypeUtil.BOOLEAN_TYPE).defaultValue(Boolean.FALSE.toString()));
     }
@@ -1064,6 +1064,12 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
 
         @Override
         public boolean equals(Object o) {
+            if (o == null)
+                return false;
+
+            if (this.getClass() != o.getClass())
+                return false;
+
             boolean result = super.equals(o);
             ExtendedCodegenParameter that = (ExtendedCodegenParameter) o;
             return result &&
@@ -1109,7 +1115,7 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         public ExtendedCodegenProperty(CodegenProperty cp) {
             super();
 
-            this.openApiType = openApiType;
+            this.openApiType = cp.openApiType;
             this.baseName = cp.baseName;
             this.complexType = cp.complexType;
             this.getter = cp.getter;
@@ -1200,6 +1206,12 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
 
         @Override
         public boolean equals(Object o) {
+            if (o == null)
+                return false;
+
+            if (this.getClass() != o.getClass())
+                return false;
+
             boolean result = super.equals(o);
             ExtendedCodegenProperty that = (ExtendedCodegenProperty) o;
             return result &&
@@ -1306,6 +1318,12 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
 
         @Override
         public boolean equals(Object o) {
+            if (o == null)
+                return false;
+
+            if (this.getClass() != o.getClass())
+                return false;
+
             boolean result = super.equals(o);
             ExtendedCodegenOperation that = (ExtendedCodegenOperation) o;
             return result &&
@@ -1440,6 +1458,12 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
 
         @Override
         public boolean equals(Object o) {
+            if (o == null)
+                return false;
+
+            if (this.getClass() != o.getClass())
+                return false;
+
             boolean result = super.equals(o);
             ExtendedCodegenModel that = (ExtendedCodegenModel) o;
             return result &&
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/WsdlSchemaCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/WsdlSchemaCodegen.java
index ac29e7caba7..42b22298758 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/WsdlSchemaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/WsdlSchemaCodegen.java
@@ -280,4 +280,7 @@ public class WsdlSchemaCodegen extends DefaultCodegen implements CodegenConfig {
         // just return the original string
         return input;
     }
+
+    @Override
+    public GeneratorLanguage generatorLanguage() { return GeneratorLanguage.WSDL; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/features/DocumentationProviderFeatures.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/features/DocumentationProviderFeatures.java
new file mode 100644
index 00000000000..b658ea0e4d9
--- /dev/null
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/features/DocumentationProviderFeatures.java
@@ -0,0 +1,173 @@
+package org.openapitools.codegen.languages.features;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+import java.util.Objects;
+
+/**
+ * The DocumentationProvider Features support to additional properties to select the
+ * documentation provider and the annotation library to use during code generation.
+ *
+ * @author cachescrubber, 2022-01-08
+ * @since 5.4.0
+ */
+public interface DocumentationProviderFeatures {
+
+  String DOCUMENTATION_PROVIDER = "documentationProvider";
+
+  String ANNOTATION_LIBRARY = "annotationLibrary";
+
+  /**
+   * Define the default documentation Provider for CliOpts processing.
+   * A NULL return value will disable the documentation provider support.
+   * Override in subclasses to customize.
+   * @return the default documentation provider
+   */
+  default DocumentationProvider defaultDocumentationProvider() {
+    return null;
+  }
+
+  /**
+   * Define the List of supported documentation Provider for CliOpts processing.
+   * Override in subclasses to customize.
+   * @return the list of supported documentation provider
+   */
+  default List<DocumentationProvider> supportedDocumentationProvider() {
+    List<DocumentationProvider> supportedProviders = new ArrayList<>();
+    supportedProviders.add(DocumentationProvider.NONE);
+    return supportedProviders;
+  }
+
+  /**
+   * Define the list of supported annotation libraries for CliOpts processing.
+   * Override in subclasses to customize.
+   * @return the list of supported annotation libraries
+   */
+  default List<AnnotationLibrary> supportedAnnotationLibraries() {
+    List<AnnotationLibrary> supportedLibraries = new ArrayList<>();
+    supportedLibraries.add(AnnotationLibrary.NONE);
+    return supportedLibraries;
+  }
+
+  DocumentationProvider getDocumentationProvider();
+
+  void setDocumentationProvider(DocumentationProvider documentationProvider);
+
+  AnnotationLibrary getAnnotationLibrary();
+
+  void setAnnotationLibrary(AnnotationLibrary annotationLibrary);
+
+  enum DocumentationProvider {
+      NONE("withoutDocumentationProvider", "Do not publish an OpenAPI specification.",
+          AnnotationLibrary.NONE, AnnotationLibrary.values()),
+
+      SOURCE("sourceDocumentationProvider", "Publish the original input OpenAPI specification.",
+          AnnotationLibrary.NONE, AnnotationLibrary.values()),
+
+      SWAGGER1("swagger1DocumentationProvider", "Generate an OpenAPI 2 (fka Swagger RESTful API Documentation Specification) specification using Swagger-Core 1.x.",
+          AnnotationLibrary.SWAGGER1, AnnotationLibrary.SWAGGER1),
+
+      SWAGGER2("swagger2DocumentationProvider", "Generate an OpenAPI 3 specification using Swagger-Core 2.x.",
+          AnnotationLibrary.SWAGGER2, AnnotationLibrary.SWAGGER2),
+
+      SPRINGFOX("springFoxDocumentationProvider", "Generate an OpenAPI 2 (fka Swagger RESTful API Documentation Specification) specification using SpringFox 2.x.",
+          AnnotationLibrary.SWAGGER1, AnnotationLibrary.SWAGGER1),
+
+      SPRINGDOC("springDocDocumentationProvider", "Generate an OpenAPI 3 specification using SpringDoc.",
+          AnnotationLibrary.SWAGGER2, AnnotationLibrary.SWAGGER2);
+
+      private final String propertyName;
+
+      private final String description;
+
+      private final AnnotationLibrary preferredAnnotationLibrary;
+
+      private final AnnotationLibrary[] supportedAnnotationLibraries;
+
+      DocumentationProvider(String propertyName, String description,
+          AnnotationLibrary preferredAnnotationLibrary,
+          AnnotationLibrary... supportedAnnotationLibraries) {
+          this.propertyName = propertyName;
+          this.description = description;
+          this.preferredAnnotationLibrary = preferredAnnotationLibrary;
+          this.supportedAnnotationLibraries = supportedAnnotationLibraries;
+      }
+
+      public static DocumentationProvider ofCliOption(String optVal) {
+          optVal = Objects.requireNonNull(optVal).toUpperCase(Locale.ROOT);
+          return valueOf(optVal);
+      }
+
+    /**
+     * The property name should be used in the codegen model as a boolean property.
+     *
+     * @return the property name for this documentation provider
+     */
+      public String getPropertyName() {
+          return propertyName;
+      }
+
+      public String getDescription() {
+          return description;
+      }
+
+      public AnnotationLibrary getPreferredAnnotationLibrary() {
+          return preferredAnnotationLibrary;
+      }
+
+      public AnnotationLibrary[] getSupportedAnnotationLibraries() {
+          return supportedAnnotationLibraries;
+      }
+
+      public List<AnnotationLibrary> supportedAnnotationLibraries() {
+          return Arrays.asList(getSupportedAnnotationLibraries());
+      }
+
+      public String toCliOptValue() {
+          return name().toLowerCase(Locale.ROOT);
+      }
+  }
+
+  enum AnnotationLibrary {
+      NONE("withoutAnnotationLibrary", "Do not annotate Model and Api with complementary annotations."),
+
+      SWAGGER1("swagger1AnnotationLibrary", "Annotate Model and Api using the Swagger Annotations 1.x library."),
+
+      SWAGGER2("swagger2AnnotationLibrary", "Annotate Model and Api using the Swagger Annotations 2.x library."),
+
+      MICROPROFILE("microprofileAnnotationLibrary", "Annotate Model and Api using the Microprofile annotations.");
+
+      private final String propertyName;
+
+      private final String description;
+
+      public static AnnotationLibrary ofCliOption(String optVal) {
+          optVal = Objects.requireNonNull(optVal).toUpperCase(Locale.ROOT);
+          return valueOf(optVal);
+      }
+
+    /**
+     * The property name is used in the codegen model as a boolean property.
+     *
+     * @return the property name for this annotation library
+     */
+    public String getPropertyName() {
+          return propertyName;
+      }
+
+      public String getDescription() {
+          return description;
+      }
+
+      AnnotationLibrary(String propertyName, String description) {
+          this.propertyName = propertyName;
+          this.description = description;
+      }
+
+      public String toCliOptValue() {
+          return name().toLowerCase(Locale.ROOT);
+      }
+  }
+}
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache
index 9d73ff5591a..7ee11c71fbc 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/api-body.mustache
@@ -101,11 +101,11 @@ end:
 {{#returnType}}{{#returnTypeIsPrimitive}}{{#returnSimpleType}}{{{.}}}*{{/returnSimpleType}}{{^returnSimpleType}}{{#isArray}}{{{.}}}_t*{{/isArray}}{{#isMap}}{{{.}}}{{/isMap}}{{/returnSimpleType}}{{/returnTypeIsPrimitive}}{{^returnTypeIsPrimitive}}{{{.}}}_t*{{/returnTypeIsPrimitive}}{{/returnType}}{{^returnType}}void{{/returnType}}
 {{{classname}}}_{{{operationId}}}(apiClient_t *apiClient{{#allParams}}, {{#isPrimitiveType}}{{#isNumber}}{{{dataType}}}{{/isNumber}}{{#isLong}}{{{dataType}}}{{/isLong}}{{#isInteger}}{{{dataType}}}{{/isInteger}}{{#isDouble}}{{{dataType}}}{{/isDouble}}{{#isFloat}}{{{dataType}}}{{/isFloat}}{{#isBoolean}}{{dataType}}{{/isBoolean}}{{#isEnum}}{{#isString}}{{projectName}}_{{operationId}}_{{baseName}}_e{{/isString}}{{/isEnum}}{{^isEnum}}{{#isString}}{{{dataType}}} *{{/isString}}{{/isEnum}}{{#isByteArray}}{{{dataType}}} *{{/isByteArray}}{{#isDate}}{{{dataType}}}{{/isDate}}{{#isDateTime}}{{{dataType}}}{{/isDateTime}}{{#isFile}}{{{dataType}}}{{/isFile}}{{#isFreeFormObject}}{{dataType}}_t *{{/isFreeFormObject}}{{/isPrimitiveType}}{{^isArray}}{{^isPrimitiveType}}{{#isModel}}{{#isEnum}}{{datatypeWithEnum}}_e{{/isEnum}}{{^isEnum}}{{{dataType}}}_t *{{/isEnum}}{{/isModel}}{{^isModel}}{{#isEnum}}{{datatypeWithEnum}}_e{{/isEnum}}{{/isModel}}{{#isUuid}}{{dataType}} *{{/isUuid}}{{#isEmail}}{{dataType}}{{/isEmail}}{{/isPrimitiveType}}{{/isArray}}{{#isContainer}}{{#isArray}}{{dataType}}_t *{{/isArray}}{{#isMap}}{{dataType}}{{/isMap}}{{/isContainer}} {{{paramName}}} {{/allParams}})
 {
-    list_t    *localVarQueryParameters = {{#hasQueryParams}}list_create();{{/hasQueryParams}}{{^hasQueryParams}}NULL;{{/hasQueryParams}}
-    list_t    *localVarHeaderParameters = {{#hasHeaderParams}}list_create();{{/hasHeaderParams}}{{^hasHeaderParams}}NULL;{{/hasHeaderParams}}
-    list_t    *localVarFormParameters = {{#hasFormParams}}list_create();{{/hasFormParams}}{{^hasFormParams}}NULL;{{/hasFormParams}}
-    list_t *localVarHeaderType = {{#hasProduces}}list_create();{{/hasProduces}}{{^hasProduces}}NULL;{{/hasProduces}}
-    list_t *localVarContentType = {{#hasConsumes}}list_create();{{/hasConsumes}}{{^hasConsumes}}NULL;{{/hasConsumes}}
+    list_t    *localVarQueryParameters = {{#hasQueryParams}}list_createList();{{/hasQueryParams}}{{^hasQueryParams}}NULL;{{/hasQueryParams}}
+    list_t    *localVarHeaderParameters = {{#hasHeaderParams}}list_createList();{{/hasHeaderParams}}{{^hasHeaderParams}}NULL;{{/hasHeaderParams}}
+    list_t    *localVarFormParameters = {{#hasFormParams}}list_createList();{{/hasFormParams}}{{^hasFormParams}}NULL;{{/hasFormParams}}
+    list_t *localVarHeaderType = {{#hasProduces}}list_createList();{{/hasProduces}}{{^hasProduces}}NULL;{{/hasProduces}}
+    list_t *localVarContentType = {{#hasConsumes}}list_createList();{{/hasConsumes}}{{^hasConsumes}}NULL;{{/hasConsumes}}
     char      *localVarBodyParameters = NULL;
 
     // create the path
@@ -341,7 +341,7 @@ end:
     //primitive return type not simple
     cJSON *{{paramName}}localVarJSON = cJSON_Parse(apiClient->dataReceived);
     cJSON *{{{paramName}}}VarJSON;
-    list_t *elementToReturn = list_create();
+    list_t *elementToReturn = list_createList();
     cJSON_ArrayForEach({{{paramName}}}VarJSON, {{paramName}}localVarJSON){
         keyValuePair_t *keyPair = keyValuePair_create(strdup({{{paramName}}}VarJSON->string), cJSON_Print({{{paramName}}}VarJSON));
         list_addElement(elementToReturn, keyPair);
@@ -356,7 +356,7 @@ end:
     if(!cJSON_IsArray({{classname}}localVarJSON)) {
         return 0;//nonprimitive container
     }
-    list_t *elementToReturn = list_create();
+    list_t *elementToReturn = list_createList();
     cJSON *{{{paramName}}}VarJSON;
     cJSON_ArrayForEach({{{paramName}}}VarJSON, {{classname}}localVarJSON)
     {
@@ -388,11 +388,11 @@ end:
         apiClient->dataReceived = NULL;
         apiClient->dataReceivedLen = 0;
     }
-    {{#hasQueryParams}}list_free(localVarQueryParameters);{{/hasQueryParams}}
-    {{#hasHeaderParams}}list_free(localVarHeaderParameters);{{/hasHeaderParams}}
-    {{#hasFormParams}}list_free(localVarFormParameters);{{/hasFormParams}}
-    {{#hasProduces}}list_free(localVarHeaderType);{{/hasProduces}}
-    {{#hasConsumes}}list_free(localVarContentType);{{/hasConsumes}}
+    {{#hasQueryParams}}list_freeList(localVarQueryParameters);{{/hasQueryParams}}
+    {{#hasHeaderParams}}list_freeList(localVarHeaderParameters);{{/hasHeaderParams}}
+    {{#hasFormParams}}list_freeList(localVarFormParameters);{{/hasFormParams}}
+    {{#hasProduces}}list_freeList(localVarHeaderType);{{/hasProduces}}
+    {{#hasConsumes}}list_freeList(localVarContentType);{{/hasConsumes}}
     free(localVarPath);
     {{#pathParams}}
     free(localVarToReplace_{{paramName}});
@@ -526,11 +526,11 @@ end:
         apiClient->dataReceived = NULL;
         apiClient->dataReceivedLen = 0;
     }
-    {{#hasQueryParams}}list_free(localVarQueryParameters);{{/hasQueryParams}}
-    {{#hasHeaderParams}}list_free(localVarHeaderParameters);{{/hasHeaderParams}}
-    {{#hasFormParams}}list_free(localVarFormParameters);{{/hasFormParams}}
-    {{#hasProduces}}list_free(localVarHeaderType);{{/hasProduces}}
-    {{#hasConsumes}}list_free(localVarContentType);{{/hasConsumes}}
+    {{#hasQueryParams}}list_freeList(localVarQueryParameters);{{/hasQueryParams}}
+    {{#hasHeaderParams}}list_freeList(localVarHeaderParameters);{{/hasHeaderParams}}
+    {{#hasFormParams}}list_freeList(localVarFormParameters);{{/hasFormParams}}
+    {{#hasProduces}}list_freeList(localVarHeaderType);{{/hasProduces}}
+    {{#hasConsumes}}list_freeList(localVarContentType);{{/hasConsumes}}
     free(localVarPath);
     {{#pathParams}}
     free(localVarToReplace_{{paramName}});
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/apiClient.c.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/apiClient.c.mustache
index 38656a5615b..e324c5f966c 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/apiClient.c.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/apiClient.c.mustache
@@ -74,7 +74,7 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
     {{/isOAuth}}
     {{#isApiKey}}
     if(apiKeys_{{name}}!= NULL) {
-        apiClient->apiKeys_{{name}} = list_create();
+        apiClient->apiKeys_{{name}} = list_createList();
         listEntry_t *listEntry = NULL;
         list_ForEach(listEntry, apiKeys_{{name}}) {
             keyValuePair_t *pair = listEntry->data;
@@ -126,7 +126,7 @@ void apiClient_free(apiClient_t *apiClient) {
             }
             keyValuePair_free(pair);
         }
-        list_free(apiClient->apiKeys_{{name}});
+        list_freeList(apiClient->apiKeys_{{name}});
     }
     {{/isApiKey}}
     {{/authMethods}}
@@ -530,7 +530,7 @@ void apiClient_invoke(apiClient_t    *apiClient,
 
         res = curl_easy_perform(handle);
 
-        curl_slist_free_all(headers);
+        curl_slist_freeList_all(headers);
 
         free(targetUrl);
 
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/api_pet_test.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/api_pet_test.mustache
index 13014042f80..ffdb0363e47 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/api_pet_test.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/api_pet_test.mustache
@@ -42,7 +42,7 @@ int main() {
     char *exampleUrl2 = malloc(strlen(EXAMPLE_URL_2) + 1);
     strcpy(exampleUrl2, EXAMPLE_URL_2);
 
-    list_t *photoUrls = list_create();
+    list_t *photoUrls = list_createList();
 
     list_addElement(photoUrls, exampleUrl1);
     list_addElement(photoUrls, exampleUrl2);
@@ -55,7 +55,7 @@ int main() {
     strcpy(exampleTag2Name, EXAMPLE_TAG_2_NAME);
     tag_t *exampleTag2 = tag_create(EXAMPLE_TAG_2_ID, exampleTag2Name);
 
-    list_t *tags = list_create();
+    list_t *tags = list_createList();
 
     list_addElement(tags, exampleTag1);
     list_addElement(tags, exampleTag2);
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/api_store_test.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/api_store_test.mustache
index 159c02e5976..0f652aa09c0 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/api_store_test.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/api_store_test.mustache
@@ -89,6 +89,6 @@ int main() {
 	list_ForEach(listEntry, elementToReturn) {
 		keyValuePair_free(listEntry->data);
 	}
-	list_free(elementToReturn);
+	list_freeList(elementToReturn);
 
 }
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/list.c.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/list.c.mustache
index dfa2e567501..786812158a2 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/list.c.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/list.c.mustache
@@ -23,7 +23,7 @@ void listEntry_printAsInt(listEntry_t *listEntry, void *additionalData) {
     printf("%i\n", *((int *) (listEntry->data)));
 }
 
-list_t *list_create() {
+list_t *list_createList() {
     list_t *createdList = malloc(sizeof(list_t));
     if(createdList == NULL) {
         // TODO Malloc Failure
@@ -88,7 +88,7 @@ void list_iterateThroughListBackward(list_t *list,
     }
 }
 
-void list_free(list_t *list) {
+void list_freeList(list_t *list) {
     if(list){
         list_iterateThroughListForward(list, listEntry_free, NULL);
         free(list);
@@ -196,5 +196,5 @@ void clear_and_free_string_list(list_t *list)
         free(list_item);
         list_item = NULL;
     }
-    list_free(list);
+    list_freeList(list);
 }
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/list.h.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/list.h.mustache
index 4c613214094..96c5832b02b 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/list.h.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/list.h.mustache
@@ -23,8 +23,8 @@ typedef struct list_t {
 
 #define list_ForEach(element, list) for(element = (list != NULL) ? (list)->firstEntry : NULL; element != NULL; element = element->nextListEntry)
 
-list_t* list_create();
-void list_free(list_t* listToFree);
+list_t* List();
+void list_freeListList(list_t* listToFree);
 
 void list_addElement(list_t* list, void* dataToAddInList);
 listEntry_t* list_getElementAt(list_t *list, long indexOfElement);
diff --git a/modules/openapi-generator/src/main/resources/C-libcurl/model-body.mustache b/modules/openapi-generator/src/main/resources/C-libcurl/model-body.mustache
index 1f28e05e909..18968d2c7c0 100644
--- a/modules/openapi-generator/src/main/resources/C-libcurl/model-body.mustache
+++ b/modules/openapi-generator/src/main/resources/C-libcurl/model-body.mustache
@@ -294,7 +294,7 @@ void {{classname}}_free({{classname}}_t *{{classname}}) {
         list_ForEach(listEntry, {{classname}}->{{name}}) {
             free(listEntry->data);
         }
-        list_free({{classname}}->{{name}});
+        list_freeList({{classname}}->{{name}});
         {{classname}}->{{name}} = NULL;
     }
     {{/isPrimitiveType}}
@@ -303,7 +303,7 @@ void {{classname}}_free({{classname}}_t *{{classname}}) {
         list_ForEach(listEntry, {{classname}}->{{name}}) {
             {{complexType}}_free(listEntry->data);
         }
-        list_free({{classname}}->{{name}});
+        list_freeList({{classname}}->{{name}});
         {{classname}}->{{name}} = NULL;
     }
     {{/isPrimitiveType}}
@@ -316,7 +316,7 @@ void {{classname}}_free({{classname}}_t *{{classname}}) {
             free (localKeyValue->value);
             keyValuePair_free(localKeyValue);
         }
-        list_free({{classname}}->{{name}});
+        list_freeList({{classname}}->{{name}});
         {{classname}}->{{name}} = NULL;
     }
     {{/isMap}}
@@ -699,7 +699,7 @@ fail:
     if(!cJSON_IsArray({{{name}}})) {
         goto end;//primitive container
     }
-    {{{name}}}List = list_create();
+    {{{name}}}List = list_createList();
 
     cJSON_ArrayForEach({{{name}}}_local, {{{name}}})
     {
@@ -742,7 +742,7 @@ fail:
         goto end; //nonprimitive container
     }
 
-    {{{name}}}List = list_create();
+    {{{name}}}List = list_createList();
 
     cJSON_ArrayForEach({{{name}}}_local_nonprimitive,{{{name}}} )
     {
@@ -762,7 +762,7 @@ fail:
     if(!cJSON_IsObject({{{name}}})) {
         goto end;//primitive map container
     }
-    {{{name}}}List = list_create();
+    {{{name}}}List = list_createList();
     keyValuePair_t *localMapKeyPair;
     cJSON_ArrayForEach({{{name}}}_local_map, {{{name}}})
     {
diff --git a/modules/openapi-generator/src/main/resources/Java/RFC3339DateFormat.mustache b/modules/openapi-generator/src/main/resources/Java/RFC3339DateFormat.mustache
index cacd793e738..46c7bb46dc3 100644
--- a/modules/openapi-generator/src/main/resources/Java/RFC3339DateFormat.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/RFC3339DateFormat.mustache
@@ -39,6 +39,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/apache-httpclient/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/apache-httpclient/ApiClient.mustache
index dadec3c2cce..371f8ee7268 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/apache-httpclient/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/apache-httpclient/ApiClient.mustache
@@ -228,6 +228,7 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
    */
   public ApiClient setBasePath(String basePath) {
     this.basePath = basePath;
+    this.serverIndex = null;
     return this;
   }
 
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
index 286838dcff4..e9190a25cca 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/jersey2/ApiClient.mustache
@@ -1190,7 +1190,12 @@ public class ApiClient{{#jsr310}} extends JavaTimeFormatter{{/jsr310}} {
       }
     }
 
-    Invocation.Builder invocationBuilder = target.request().accept(accept);
+    Invocation.Builder invocationBuilder;
+    if (accept != null) {
+      invocationBuilder = target.request().accept(accept);
+    } else {
+      invocationBuilder = target.request();
+    }
 
     for (Entry<String, String> entry : cookieParams.entrySet()) {
       String value = entry.getValue();
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/native/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/native/ApiClient.mustache
index 97714723810..03fe2a46841 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/native/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/native/ApiClient.mustache
@@ -76,7 +76,7 @@ public class ApiClient {
    * @return URL-encoded representation of the input string.
    */
   public static String urlEncode(String s) {
-    return URLEncoder.encode(s, UTF_8);
+    return URLEncoder.encode(s, UTF_8).replaceAll("\\+", "%20");
   }
 
   /**
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/native/api.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/native/api.mustache
index 218a432d106..86fb8dd899c 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/native/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/native/api.mustache
@@ -341,9 +341,9 @@ public class {{classname}} {
     }
     {{/headerParams}}
     {{#bodyParam}}
-    localVarRequestBuilder.header("Content-Type", "application/json");
+    localVarRequestBuilder.header("Content-Type", "{{#hasConsumes}}{{#consumes}}{{#-first}}{{mediaType}}{{/-first}}{{/consumes}}{{/hasConsumes}}{{#hasConsumes}}{{^consumes}}application/json{{/consumes}}{{/hasConsumes}}{{^hasConsumes}}application/json{{/hasConsumes}}");
     {{/bodyParam}}
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "{{#hasProduces}}{{#produces}}{{mediaType}}{{^-last}}, {{/-last}}{{/produces}}{{/hasProduces}}{{#hasProduces}}{{^produces}}application/json{{/produces}}{{/hasProduces}}{{^hasProduces}}application/json{{/hasProduces}}");
 
     {{#bodyParam}}
     try {
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/ApiClient.mustache
index 854ac95cf91..ce5e4bf4848 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/ApiClient.mustache
@@ -1481,6 +1481,7 @@ public class ApiClient {
      * @param payload HTTP request body
      * @param method HTTP method
      * @param uri URI
+     * @throws org.openapitools.client.ApiException If fails to update the parameters
      */
     public void updateParamsForAuth(String[] authNames, List<Pair> queryParams, Map<String, String> headerParams,
                                     Map<String, String> cookieParams, String payload, String method, URI uri) throws ApiException {
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/api.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/api.mustache
index e0d605818d3..943e6948de7 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/api.mustache
@@ -173,7 +173,7 @@ public class {{classname}} {
             {{#consumes}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/consumes}}
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/auth/RetryingOAuth.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/auth/RetryingOAuth.mustache
index 7b09aa700d6..49f3d0ccc30 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/auth/RetryingOAuth.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson-nextgen/auth/RetryingOAuth.mustache
@@ -29,22 +29,31 @@ public class RetryingOAuth extends OAuth implements Interceptor {
 
     private TokenRequestBuilder tokenRequestBuilder;
 
+    /**
+     * @param client An OkHttp client
+     * @param tokenRequestBuilder A token request builder
+     */
     public RetryingOAuth(OkHttpClient client, TokenRequestBuilder tokenRequestBuilder) {
         this.oAuthClient = new OAuthClient(new OAuthOkHttpClient(client));
         this.tokenRequestBuilder = tokenRequestBuilder;
     }
 
+    /**
+     * @param tokenRequestBuilder A token request builder
+     */
     public RetryingOAuth(TokenRequestBuilder tokenRequestBuilder) {
         this(new OkHttpClient(), tokenRequestBuilder);
     }
 
     /**
-    @param tokenUrl The token URL to be used for this OAuth2 flow.
-        Applicable to the following OAuth2 flows: "password", "clientCredentials" and "authorizationCode".
-        The value must be an absolute URL.
-    @param clientId The OAuth2 client ID for the "clientCredentials" flow.
-    @param clientSecret The OAuth2 client secret for the "clientCredentials" flow.
-    */
+     * @param tokenUrl The token URL to be used for this OAuth2 flow.
+     *   Applicable to the following OAuth2 flows: "password", "clientCredentials" and "authorizationCode".
+     *   The value must be an absolute URL.
+     * @param clientId The OAuth2 client ID for the "clientCredentials" flow.
+     * @param flow OAuth flow.
+     * @param clientSecret The OAuth2 client secret for the "clientCredentials" flow.
+     * @param parameters A map of string.
+     */
     public RetryingOAuth(
             String tokenUrl,
             String clientId,
@@ -63,6 +72,11 @@ public class RetryingOAuth extends OAuth implements Interceptor {
         }
     }
 
+    /**
+     * Set the OAuth flow
+     *
+     * @param flow The OAuth flow.
+     */
     public void setFlow(OAuthFlow flow) {
         switch(flow) {
             case ACCESS_CODE:
@@ -148,8 +162,12 @@ public class RetryingOAuth extends OAuth implements Interceptor {
         }
     }
 
-    /*
+    /**
      * Returns true if the access token has been updated
+     *
+     * @param requestAccessToken the request access token
+     * @return True if the update is successful
+     * @throws java.io.IOException If fail to update the access token
      */
     public synchronized boolean updateAccessToken(String requestAccessToken) throws IOException {
         if (getAccessToken() == null || getAccessToken().equals(requestAccessToken)) {
@@ -166,10 +184,21 @@ public class RetryingOAuth extends OAuth implements Interceptor {
         return getAccessToken() == null || !getAccessToken().equals(requestAccessToken);
     }
 
+    /**
+     * Gets the token request builder
+     *
+     * @return A token request builder
+     * @throws java.io.IOException If fail to update the access token
+     */
     public TokenRequestBuilder getTokenRequestBuilder() {
         return tokenRequestBuilder;
     }
 
+    /**
+     * Sets the token request builder
+     *
+     * @param tokenRequestBuilder Token request builder
+     */
     public void setTokenRequestBuilder(TokenRequestBuilder tokenRequestBuilder) {
         this.tokenRequestBuilder = tokenRequestBuilder;
     }
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/api.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/api.mustache
index c55259c44fe..e81f874f1e1 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/api.mustache
@@ -204,7 +204,7 @@ public class {{classname}} {
             {{#consumes}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/consumes}}
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache
index 318a16b324b..55294cc3856 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/ApiClient.mustache
@@ -19,9 +19,6 @@ import org.threeten.bp.format.DateTimeFormatter;
 {{/threetenbp}}
 import retrofit2.Converter;
 import retrofit2.Retrofit;
-{{#useRxJava}}
-import retrofit2.adapter.rxjava.RxJavaCallAdapterFactory;
-{{/useRxJava}}
 {{#useRxJava2}}
 import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
 {{/useRxJava2}}
@@ -157,9 +154,6 @@ public class ApiClient {
     adapterBuilder = new Retrofit
       .Builder()
       .baseUrl(baseUrl)
-      {{#useRxJava}}
-      .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
-      {{/useRxJava}}
       {{#useRxJava2}}
       .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
       {{/useRxJava2}}
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/api.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/api.mustache
index dd199a5e108..82c3fe068c8 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/api.mustache
@@ -2,9 +2,6 @@ package {{package}};
 
 import {{invokerPackage}}.CollectionFormats.*;
 
-{{#useRxJava}}
-import rx.Observable;
-{{/useRxJava}}
 {{#useRxJava2}}
 import io.reactivex.Observable;
 {{/useRxJava2}}
@@ -47,7 +44,7 @@ public interface {{classname}} {
 {{#allParams}}
    * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}
 {{/allParams}}
-   * @return {{^doNotUseRx}}{{#useRxJava}}Observable&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{^returnType}}Void{{/returnType}}{{/isResponseFile}}&gt;{{/useRxJava}}{{#useRxJava2}}{{#returnType}}Observable&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{/isResponseFile}}&gt;{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava2}}{{#useRxJava3}}{{#returnType}}Observable&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{/isResponseFile}}&gt;{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava3}}{{/doNotUseRx}}{{#doNotUseRx}}Call&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{^returnType}}Void{{/returnType}}{{/isResponseFile}}&gt;{{/doNotUseRx}}
+   * @return {{^doNotUseRx}}{{#useRxJava2}}{{#returnType}}Observable&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{/isResponseFile}}&gt;{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava2}}{{#useRxJava3}}{{#returnType}}Observable&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{/isResponseFile}}&gt;{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava3}}{{/doNotUseRx}}{{#doNotUseRx}}Call&lt;{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{returnType}}{{^returnType}}Void{{/returnType}}{{/isResponseFile}}&gt;{{/doNotUseRx}}
 {{#isDeprecated}}
    * @deprecated
 {{/isDeprecated}}
@@ -74,7 +71,7 @@ public interface {{classname}} {
   {{/prioritizedContentTypes}}
   {{/formParams}}
   @{{httpMethod}}("{{{path}}}")
-  {{^doNotUseRx}}{{#useRxJava}}Observable<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{^returnType}}Void{{/returnType}}{{/isResponseFile}}>{{/useRxJava}}{{#useRxJava2}}{{#returnType}}Observable<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{/isResponseFile}}>{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava2}}{{#useRxJava3}}{{#returnType}}Observable<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{/isResponseFile}}>{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava3}}{{/doNotUseRx}}{{#doNotUseRx}}Call<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{^returnType}}Void{{/returnType}}{{/isResponseFile}}>{{/doNotUseRx}} {{operationId}}({{^allParams}});{{/allParams}}
+  {{^doNotUseRx}}{{#useRxJava2}}{{#returnType}}Observable<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{/isResponseFile}}>{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava2}}{{#useRxJava3}}{{#returnType}}Observable<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{/isResponseFile}}>{{/returnType}}{{^returnType}}Completable{{/returnType}}{{/useRxJava3}}{{/doNotUseRx}}{{#doNotUseRx}}Call<{{#isResponseFile}}ResponseBody{{/isResponseFile}}{{^isResponseFile}}{{{returnType}}}{{^returnType}}Void{{/returnType}}{{/isResponseFile}}>{{/doNotUseRx}} {{operationId}}({{^allParams}});{{/allParams}}
     {{#allParams}}{{>libraries/retrofit2/queryParams}}{{>libraries/retrofit2/pathParams}}{{>libraries/retrofit2/headerParams}}{{>libraries/retrofit2/bodyParams}}{{>libraries/retrofit2/formParams}}{{^-last}}, {{/-last}}{{#-last}}
   );{{/-last}}{{/allParams}}
 
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache
index 35a63779f64..a5c716b18d6 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.gradle.mustache
@@ -118,21 +118,10 @@ ext {
     jackson_databind_nullable_version = "0.2.2"
     {{/openApiNullable}}
     jakarta_annotation_version = "1.3.5"
-    {{#play24}}
-    play_version = "2.4.11"
-    {{/play24}}
-    {{#play25}}
-    play_version = "2.5.14"
-    {{/play25}}
-    {{#play26}}
     play_version = "2.6.7"
-    {{/play26}}
     {{/usePlayWS}}
     swagger_annotations_version = "1.5.22"
     junit_version = "4.13.1"
-    {{#useRxJava}}
-    rx_java_version = "1.3.0"
-    {{/useRxJava}}
     {{#useRxJava2}}
     rx_java_version = "2.1.1"
     {{/useRxJava2}}
@@ -152,10 +141,6 @@ dependencies {
     implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
     implementation "com.squareup.retrofit2:converter-scalars:$retrofit_version"
     implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
-    {{#useRxJava}}
-    implementation "com.squareup.retrofit2:adapter-rxjava:$retrofit_version"
-    implementation "io.reactivex:rxjava:$rx_java_version"
-    {{/useRxJava}}
     {{#useRxJava2}}
     implementation 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
     implementation "io.reactivex.rxjava2:rxjava:$rx_java_version"
@@ -177,13 +162,8 @@ dependencies {
     implementation "org.threeten:threetenbp:$threetenbp_version"
     {{/threetenbp}}
     {{#usePlayWS}}
-    {{#play26}}
     implementation "com.typesafe.play:play-ahc-ws_2.12:$play_version"
     implementation "jakarta.validation:jakarta.validation-api:2.0.2"
-    {{/play26}}
-    {{^play26}}
-    implementation "com.typesafe.play:play-java-ws_2.11:$play_version"
-    {{/play26}}
     implementation "com.squareup.retrofit2:converter-jackson:$retrofit_version"
     implementation "com.fasterxml.jackson.core:jackson-core:$jackson_version"
     implementation "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.sbt.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.sbt.mustache
index d859cf83d24..a572f4b93e2 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.sbt.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/build.sbt.mustache
@@ -15,25 +15,13 @@ lazy val root = (project in file(".")).
       "com.squareup.retrofit2" % "converter-gson" % "2.3.0" % "compile",
       {{/usePlayWS}}
       {{#usePlayWS}}
-      {{#play24}}
-      "com.typesafe.play" % "play-java-ws_2.11" % "2.4.11" % "compile",
-      {{/play24}}
-      {{#play25}}
-      "com.typesafe.play" % "play-java-ws_2.11" % "2.5.15" % "compile",
-      {{/play25}}
-      {{#play26}}
       "com.typesafe.play" % "play-ahc-ws_2.12" % "2.6.7" % "compile",
       "jakarta.validation" % "jakarta.validation-api" % "2.0.2" % "compile",
-      {{/play26}}
       "com.squareup.retrofit2" % "converter-jackson" % "2.3.0" % "compile",
       "com.fasterxml.jackson.core" % "jackson-core" % "2.10.5" % "compile",
       "com.fasterxml.jackson.core" % "jackson-annotations" % "2.10.5" % "compile",
       "com.fasterxml.jackson.core" % "jackson-databind" % "2.10.5.1" % "compile",
       {{/usePlayWS}}
-      {{#useRxJava}}
-      "com.squareup.retrofit2" % "adapter-rxjava" % "2.3.0" % "compile",
-      "io.reactivex" % "rxjava" % "1.3.0" % "compile",
-      {{/useRxJava}}
       {{#useRxJava2}}
       "com.squareup.retrofit2" % "adapter-rxjava2" % "2.3.0" % "compile",
       "io.reactivex.rxjava2" % "rxjava" % "2.1.1" % "compile",
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/api.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/api.mustache
index d4e97cc347b..dd3339ff840 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/api.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/play26/api.mustache
@@ -2,9 +2,12 @@ package {{package}};
 
 import {{invokerPackage}}.CollectionFormats.*;
 
-{{#useRxJava}}import rx.Observable;{{/useRxJava}}
-{{#useRxJava2}}import io.reactivex.Observable;{{/useRxJava2}}
-{{#doNotUseRx}}import retrofit2.Call;{{/doNotUseRx}}
+{{#useRxJava2}}
+import io.reactivex.Observable;
+{{/useRxJava2}}
+{{#doNotUseRx}}
+import retrofit2.Call;
+{{/doNotUseRx}}
 import retrofit2.http.*;
 
 import okhttp3.RequestBody;
diff --git a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/pom.mustache b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/pom.mustache
index 39da1fd02e8..5c000617145 100644
--- a/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/Java/libraries/retrofit2/pom.mustache
@@ -273,18 +273,6 @@
                 <version>${threetenbp-version}</version>
             </dependency>
         {{/threetenbp}}
-        {{#useRxJava}}
-            <dependency>
-                <groupId>io.reactivex</groupId>
-                <artifactId>rxjava</artifactId>
-                <version>${rxjava-version}</version>
-            </dependency>
-            <dependency>
-                <groupId>com.squareup.retrofit2</groupId>
-                <artifactId>adapter-rxjava</artifactId>
-                <version>${retrofit-version}</version>
-            </dependency>
-        {{/useRxJava}}
         {{#useRxJava2}}
             <dependency>
                 <groupId>io.reactivex.rxjava2</groupId>
@@ -351,21 +339,6 @@
                     <version>${jackson-version}</version>
                 </dependency>
             {{/withXml}}
-            {{#play24}}
-            <dependency>
-                <groupId>com.typesafe.play</groupId>
-                <artifactId>play-java-ws_2.11</artifactId>
-                <version>${play-version}</version>
-            </dependency>
-            {{/play24}}
-            {{#play25}}
-            <dependency>
-                <groupId>com.typesafe.play</groupId>
-                <artifactId>play-java-ws_2.11</artifactId>
-                <version>${play-version}</version>
-            </dependency>
-            {{/play25}}
-            {{#play26}}
             <dependency>
                 <groupId>com.typesafe.play</groupId>
                 <artifactId>play-ahc-ws_2.12</artifactId>
@@ -376,7 +349,6 @@
                 <artifactId>jakarta.validation-api</artifactId>
                 <version>${beanvalidation-version}</version>
             </dependency>
-            {{/play26}}
         {{/usePlayWS}}
         {{#parcelableModel}}
             <!-- Needed for Parcelable support-->
@@ -410,23 +382,12 @@
         <swagger-annotations-version>1.6.3</swagger-annotations-version>
         {{#usePlayWS}}
         <jackson-version>2.12.1</jackson-version>
-        {{#play24}}
-        <play-version>2.4.11</play-version>
-        {{/play24}}
-        {{#play25}}
-        <play-version>2.5.15</play-version>
-        {{/play25}}
-        {{#play26}}
         <play-version>2.6.7</play-version>
-        {{/play26}}
         {{#openApiNullable}}
         <jackson-databind-nullable-version>0.2.2</jackson-databind-nullable-version>
         {{/openApiNullable}}
         {{/usePlayWS}}
         <retrofit-version>2.5.0</retrofit-version>
-        {{#useRxJava}}
-        <rxjava-version>1.3.0</rxjava-version>
-        {{/useRxJava}}
         {{#useRxJava2}}
         <rxjava-version>2.1.1</rxjava-version>
         {{/useRxJava2}}
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf-ext/server/pom.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf-ext/server/pom.mustache
index c523f0a994c..338527fe489 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf-ext/server/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf-ext/server/pom.mustache
@@ -346,7 +346,7 @@
   {{/generateSpringBootApplication}}
 {{/generateSpringApplication}}
 {{^generateSpringBootApplication}}
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
 {{/generateSpringBootApplication}}
     <cxf-version>3.3.0</cxf-version>
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf/server/pom.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf/server/pom.mustache
index 5649020a9ab..752f94497fe 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf/server/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/cxf/server/pom.mustache
@@ -266,7 +266,7 @@
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <swagger-core-version>1.5.22</swagger-core-version>
     <jetty-version>9.2.9.v20150224</jetty-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
 {{#useBeanValidation}}
     <beanvalidation-version>2.0.2</beanvalidation-version>
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/libraries/jersey1/pom.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/libraries/jersey1/pom.mustache
index 0bef89d2309..828013c794c 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/libraries/jersey1/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/libraries/jersey1/pom.mustache
@@ -217,7 +217,7 @@
     <jersey-version>1.19.1</jersey-version>
     <jackson-version>2.9.9</jackson-version>
     <slf4j-version>1.7.21</slf4j-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <servlet-api-version>4.0.4</servlet-api-version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/eap/gradle.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/eap/gradle.mustache
index b343b8ec954..ca943874af9 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/eap/gradle.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/eap/gradle.mustache
@@ -25,7 +25,7 @@ dependencies {
 {{#java8}}
     compile         'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.9'
 {{/java8}}
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/gradle.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/gradle.mustache
index cd6febf1470..4c383c52c6a 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/gradle.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/resteasy/gradle.mustache
@@ -25,7 +25,7 @@ dependencies {
     //TODO: swaggerFeature
     compile 'io.swagger:swagger-jaxrs:1.5.12'
 
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/README.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/README.mustache
index d7982e6e6a6..d2d0ddaa1e5 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/README.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/README.mustache
@@ -16,7 +16,7 @@ The jar can be used in combination with an other project providing the implement
 {{/interfaceOnly}}
 
 {{^interfaceOnly}}
-To build the server, run this maven command:
+To build the server, run this maven command (with JDK 11+):
 
 ```bash
 mvn package
@@ -25,7 +25,7 @@ mvn package
 To run the server, run this maven command:
 
 ```bash
-mvn exec:java
+java -jar target/{{artifactId}}.jar
 ```
 
 You can then call your server endpoints under:
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/logging.properties.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/logging.properties.mustache
index fea543d4c33..3e909fb7d90 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/logging.properties.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/logging.properties.mustache
@@ -1,19 +1,20 @@
 # Example Logging Configuration File
 # For more information see $JAVA_HOME/jre/lib/logging.properties
 
-# Send messages to the console
-handlers=java.util.logging.ConsoleHandler
-
-# Global default logging level. Can be overridden by specific handlers and loggers
+## Send messages to the console
+handlers=io.helidon.common.HelidonConsoleHandler
+#
+## HelidonConsoleHandler uses a SimpleFormatter subclass that replaces "!thread!" with the current thread
+java.util.logging.SimpleFormatter.format=%1$tY.%1$tm.%1$td %1$tH:%1$tM:%1$tS %4$s %3$s !thread!: %5$s%6$s%n
+#
+## Global logging level. Can be overridden by specific loggers
 .level=INFO
 
-# Helidon Web Server has a custom log formatter that extends SimpleFormatter.
-# It replaces "!thread!" with the current thread name
-java.util.logging.ConsoleHandler.level=INFO
-java.util.logging.ConsoleHandler.formatter=io.helidon.webserver.WebServerLogFormatter
-java.util.logging.SimpleFormatter.format=%1$tY.%1$tm.%1$td %1$tH:%1$tM:%1$tS %4$s %3$s !thread!: %5$s%6$s%n
+# Quiet Weld
+org.jboss.level=WARNING
 
-#Component specific log levels
+#
+# Component specific log levels
 #io.helidon.webserver.level=INFO
 #io.helidon.config.level=INFO
 #io.helidon.security.level=INFO
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/microprofile-config.properties.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/microprofile-config.properties.mustache
index 1780a159b0a..38988f20e5e 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/microprofile-config.properties.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/microprofile-config.properties.mustache
@@ -1,6 +1,11 @@
+# Microprofile server properties
+
+# Application properties. This is the default greeting
+app.greeting=Hello
+
 # Microprofile server properties
 server.port=8080
 server.host=0.0.0.0
 
-# Microprofile OpenAPI properties
-mp.openapi.scan.disable=true
\ No newline at end of file
+# Enable the optional MicroProfile Metrics REST.request metrics
+metrics.rest-request.enabled=true
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/pom.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/pom.mustache
index e72b2b5d440..91c575960dc 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/libraries/helidon/pom.mustache
@@ -16,103 +16,223 @@
 {{/parentOverridden}}
 
     <properties>
-        <mainClass>io.helidon.microprofile.server.Main</mainClass>
-        <version.lib.helidon>1.2.0</version.lib.helidon>
+        <!-- pom -->
+        <helidon.version>{{helidonVersion}}</helidon.version>
+        <mainClass>io.helidon.microprofile.cdi.Main</mainClass>
+
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>${maven.compiler.source}</maven.compiler.target>
+        <maven.site.skip>true</maven.site.skip>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+
+        <!-- plugin versions -->
         <version.plugin.compiler>3.8.1</version.plugin.compiler>
+        <version.plugin.dependency>3.0.0</version.plugin.dependency>
+        <version.plugin.eclipselink>2.7.5.1</version.plugin.eclipselink>
         <version.plugin.exec>1.6.0</version.plugin.exec>
+        <version.plugin.failsafe>3.0.0-M5</version.plugin.failsafe>
+        <version.plugin.helidon>2.3.0</version.plugin.helidon>
+        <version.plugin.helidon-cli>2.3.0</version.plugin.helidon-cli>
         <version.plugin.jandex>1.0.6</version.plugin.jandex>
         <version.plugin.jar>3.0.2</version.plugin.jar>
-        <version.lib.microprofile-openapi-api>1.1.2</version.lib.microprofile-openapi-api>
-        <version.lib.jersey>2.29</version.lib.jersey>
-        <version.lib.activation-api>1.2.2</version.lib.activation-api>
-        <version.lib.junit>5.1.0</version.lib.junit>
+        <version.plugin.os>1.5.0.Final</version.plugin.os>
+        <version.plugin.protobuf>0.5.1</version.plugin.protobuf>
+        <version.plugin.resources>2.7</version.plugin.resources>
+        <version.plugin.surefire>3.0.0-M5</version.plugin.surefire>
     </properties>
 
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>org.jboss.jandex</groupId>
-                <artifactId>jandex-maven-plugin</artifactId>
-                <version>${version.plugin.jandex}</version>
-                <executions>
-                  <execution>
-                    <id>make-index</id>
-                    <goals>
-                      <goal>jandex</goal>
-                    </goals>
-                  </execution>
-                </executions>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-jar-plugin</artifactId>
-                <version>${version.plugin.jar}</version>
-                <configuration>
-                    <archive>
-                        <manifest>
-                            <addClasspath>true</addClasspath>
-                            <mainClass>${mainClass}</mainClass>
-                        </manifest>
-                    </archive>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${version.plugin.compiler}</version>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                    <compilerArgs>
-                        <arg>-Xlint:unchecked</arg>
-                    </compilerArgs>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.codehaus.mojo</groupId>
-                <artifactId>exec-maven-plugin</artifactId>
-                <version>${version.plugin.exec}</version>
-                <configuration>
-                    <mainClass>${mainClass}</mainClass>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>io.helidon</groupId>
+                <artifactId>helidon-dependencies</artifactId>
+                <version>${helidon.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
 
     <dependencies>
         <dependency>
             <groupId>io.helidon.microprofile.bundles</groupId>
-            <artifactId>helidon-microprofile-2.2</artifactId>
-            <version>${version.lib.helidon}</version>
+            <artifactId>helidon-microprofile</artifactId>
         </dependency>
         <dependency>
-            <groupId>org.eclipse.microprofile.openapi</groupId>
-            <artifactId>microprofile-openapi-api</artifactId>
-            <version>${version.lib.microprofile-openapi-api}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.glassfish.jersey.media</groupId>
-            <artifactId>jersey-media-json-binding</artifactId>
-            <version>${version.lib.jersey}</version>
-            <scope>runtime</scope>
-        </dependency>
-        <dependency>
-            <groupId>jakarta.activation</groupId>
-            <artifactId>jakarta.activation-api</artifactId>
-            <version>${version.lib.activation-api}</version>
+            <groupId>org.jboss</groupId>
+            <artifactId>jandex</artifactId>
             <scope>runtime</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
-            <version>${version.lib.junit}</version>
-            <scope>test</scope>
-        </dependency>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <version>${version.lib.junit}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
+
+    <build>
+        <finalName>${project.artifactId}</finalName>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>${version.plugin.compiler}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-surefire-plugin</artifactId>
+                    <version>${version.plugin.surefire}</version>
+                    <configuration>
+                        <useModulePath>false</useModulePath>
+                        <systemPropertyVariables>
+                            <java.util.logging.config.file>${project.build.outputDirectory}/logging.properties</java.util.logging.config.file>
+                        </systemPropertyVariables>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-failsafe-plugin</artifactId>
+                    <version>${version.plugin.failsafe}</version>
+                    <configuration>
+                        <useModulePath>false</useModulePath>
+                        <redirectTestOutputToFile>true</redirectTestOutputToFile>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-dependency-plugin</artifactId>
+                    <version>${version.plugin.dependency}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-resources-plugin</artifactId>
+                    <version>${version.plugin.resources}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-jar-plugin</artifactId>
+                    <version>${version.plugin.jar}</version>
+                    <configuration>
+                        <archive>
+                            <manifest>
+                                <addClasspath>true</addClasspath>
+                                <classpathPrefix>libs</classpathPrefix>
+                                <mainClass>${mainClass}</mainClass>
+                                <useUniqueVersions>false</useUniqueVersions>
+                            </manifest>
+                        </archive>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <groupId>org.jboss.jandex</groupId>
+                    <artifactId>jandex-maven-plugin</artifactId>
+                    <version>${version.plugin.jandex}</version>
+                </plugin>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>exec-maven-plugin</artifactId>
+                    <version>${version.plugin.exec}</version>
+                    <configuration>
+                        <mainClass>${mainClass}</mainClass>
+                    </configuration>
+                </plugin>
+                <plugin>
+                    <groupId>io.helidon.build-tools</groupId>
+                    <artifactId>helidon-maven-plugin</artifactId>
+                    <version>${version.plugin.helidon}</version>
+                </plugin>
+                <plugin>
+                    <groupId>io.helidon.build-tools</groupId>
+                    <artifactId>helidon-cli-maven-plugin</artifactId>
+                    <version>${version.plugin.helidon-cli}</version>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>copy-libs</id>
+                        <phase>prepare-package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}/libs</outputDirectory>
+                            <overWriteReleases>false</overWriteReleases>
+                            <overWriteSnapshots>false</overWriteSnapshots>
+                            <overWriteIfNewer>true</overWriteIfNewer>
+                            <overWriteIfNewer>true</overWriteIfNewer>
+                            <includeScope>runtime</includeScope>
+                            <excludeScope>test</excludeScope>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.jboss.jandex</groupId>
+                <artifactId>jandex-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>make-index</id>
+                        <goals>
+                            <goal>jandex</goal>
+                        </goals>
+                        <phase>process-classes</phase>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>native-image</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>io.helidon.build-tools</groupId>
+                        <artifactId>helidon-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>native-image</id>
+                                <goals>
+                                    <goal>native-image</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+            <dependencies>
+                <dependency>
+                    <groupId>io.helidon.integrations.graal</groupId>
+                    <artifactId>helidon-mp-graal-native-image-extension</artifactId>
+                </dependency>
+            </dependencies>
+        </profile>
+        <profile>
+            <id>jlink-image</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>io.helidon.build-tools</groupId>
+                        <artifactId>helidon-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <goals>
+                                    <goal>jlink-image</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
 </project>
diff --git a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/pojo.mustache b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/pojo.mustache
index 9d0793fe775..4e9af1007bd 100644
--- a/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/pojo.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaJaxRS/spec/pojo.mustache
@@ -55,7 +55,7 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.{{name}} = {{name}};
   }
 
-  {{#isListContainer}}
+  {{#isArray}}
   public {{classname}} add{{nameInCamelCase}}Item({{{items.datatypeWithEnum}}} {{name}}Item) {
     if (this.{{name}} == null) {
       this.{{name}} = {{{defaultValue}}};
@@ -72,8 +72,8 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 
     return this;
   }
-  {{/isListContainer}}
-  {{#isMapContainer}}
+  {{/isArray}}
+  {{#isMap}}
   public {{classname}} put{{nameInCamelCase}}Item(String key, {{{items.datatypeWithEnum}}} {{name}}Item) {
     if (this.{{name}} == null) {
       this.{{name}} = {{{defaultValue}}};
@@ -90,7 +90,7 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 
     return this;
   }
-  {{/isMapContainer}}
+  {{/isMap}}
   {{/vars}}
 
   @Override
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/additionalEnumTypeAnnotations.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/additionalEnumTypeAnnotations.mustache
index aa524798b42..dbb6a373fc9 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/additionalEnumTypeAnnotations.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/additionalEnumTypeAnnotations.mustache
@@ -1,2 +1,3 @@
-{{#additionalEnumTypeAnnotations}}{{{.}}}
+{{#additionalEnumTypeAnnotations}}
+{{{.}}}
 {{/additionalEnumTypeAnnotations}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/additionalModelTypeAnnotations.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/additionalModelTypeAnnotations.mustache
index f4871c02cc2..91b4950fdb2 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/additionalModelTypeAnnotations.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/additionalModelTypeAnnotations.mustache
@@ -1,2 +1,3 @@
-{{#additionalModelTypeAnnotations}}{{{.}}}
+{{#additionalModelTypeAnnotations}}
+{{{.}}}
 {{/additionalModelTypeAnnotations}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/allowableValues.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/allowableValues.mustache
index 1cba2038d87..6aa973a6a65 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/allowableValues.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/allowableValues.mustache
@@ -1 +1 @@
-{{#allowableValues}}allowableValues ={{#oas3}} { {{#values}}"{{{.}}}"{{^-last}}, {{/-last}}{{/values}} }{{/oas3}}{{^oas3}} "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{#-last}}{{/-last}}{{/values}}"{{/oas3}}{{/allowableValues}}
\ No newline at end of file
+{{#allowableValues}}allowableValues ={{#swagger2AnnotationLibrary}} { {{#values}}"{{{.}}}"{{^-last}}, {{/-last}}{{/values}} }{{/swagger2AnnotationLibrary}}{{#swagger1AnnotationLibrary}} "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{#-last}}{{/-last}}{{/values}}"{{/swagger1AnnotationLibrary}}{{/allowableValues}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache
index 66c398753e0..da913ae679a 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/api.mustache
@@ -7,7 +7,7 @@ package {{package}};
 
 {{#imports}}import {{import}};
 {{/imports}}
-{{#oas3}}
+{{#swagger2AnnotationLibrary}}
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Parameters;
@@ -16,10 +16,10 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
-{{/oas3}}
-{{^oas3}}
+{{/swagger2AnnotationLibrary}}
+{{#swagger1AnnotationLibrary}}
 import io.swagger.annotations.*;
-{{/oas3}}
+{{/swagger1AnnotationLibrary}}
 {{#jdk8-no-delegate}}
 {{#virtualService}}
 import io.virtualan.annotation.ApiVirtual;
@@ -37,9 +37,9 @@ import org.springframework.stereotype.Controller;
 {{/useSpringController}}
 import org.springframework.web.bind.annotation.*;
 {{#jdk8-no-delegate}}
-    {{^reactive}}
+{{^reactive}}
 import org.springframework.web.context.request.NativeWebRequest;
-    {{/reactive}}
+{{/reactive}}
 {{/jdk8-no-delegate}}
 import org.springframework.web.multipart.MultipartFile;
 {{#reactive}}
@@ -59,13 +59,15 @@ import java.util.Map;
 import java.util.Optional;
 {{/jdk8-no-delegate}}
 {{^jdk8-no-delegate}}
-    {{#useOptional}}
+{{#useOptional}}
 import java.util.Optional;
-    {{/useOptional}}
+{{/useOptional}}
 {{/jdk8-no-delegate}}
 {{#async}}
 import java.util.concurrent.{{^jdk8}}Callable{{/jdk8}}{{#jdk8}}CompletableFuture{{/jdk8}};
 {{/async}}
+import javax.annotation.Generated;
+
 {{>generatedAnnotation}}
 {{#useBeanValidation}}
 @Validated
@@ -73,7 +75,12 @@ import java.util.concurrent.{{^jdk8}}Callable{{/jdk8}}{{#jdk8}}CompletableFuture
 {{#useSpringController}}
 @Controller
 {{/useSpringController}}
-{{#oas3}}@Tag(name = "{{{baseName}}}", description = "the {{{baseName}}} API"){{/oas3}}{{^oas3}}@Api(value = "{{{baseName}}}", description = "the {{{baseName}}} API"){{/oas3}}
+{{#swagger2AnnotationLibrary}}
+@Tag(name = "{{{baseName}}}", description = "the {{{baseName}}} API")
+{{/swagger2AnnotationLibrary}}
+{{#swagger1AnnotationLibrary}}
+@Api(value = "{{{baseName}}}", description = "the {{{baseName}}} API")
+{{/swagger1AnnotationLibrary}}
 {{#operations}}
 {{#virtualService}}
 @VirtualService
@@ -119,10 +126,15 @@ public interface {{classname}} {
     {{#virtualService}}
     @ApiVirtual
     {{/virtualService}}
-    {{#oas3}}
+    {{#swagger2AnnotationLibrary}}
     @Operation(
-        summary = "{{{summary}}}",
+        operationId = "{{{operationId}}}",
+        {{#summary}}
+        summary = "{{{.}}}",
+        {{/summary}}
+        {{#vendorExtensions.x-tags}}
         tags = { {{#vendorExtensions.x-tags}}"{{tag}}"{{^-last}}, {{/-last}}{{/vendorExtensions.x-tags}} },
+        {{/vendorExtensions.x-tags}}
         responses = {
             {{#responses}}
             @ApiResponse(responseCode = "{{{code}}}", description = "{{{message}}}"{{#baseType}}, content = @Content(mediaType = "application/json", schema = @Schema(implementation =  {{{baseType}}}.class)){{/baseType}}){{^-last}},{{/-last}}
@@ -134,8 +146,8 @@ public interface {{classname}} {
             {{/authMethods}}
         }{{/hasAuthMethods}}
     )
-    {{/oas3}}
-    {{^oas3}}
+    {{/swagger2AnnotationLibrary}}
+    {{#swagger1AnnotationLibrary}}
     @ApiOperation(
         tags = { {{#vendorExtensions.x-tags}}"{{tag}}"{{^-last}}, {{/-last}}{{/vendorExtensions.x-tags}} },
         value = "{{{summary}}}",
@@ -162,20 +174,20 @@ public interface {{classname}} {
         @ApiResponse(code = {{{code}}}, message = "{{{message}}}"{{#baseType}}, response = {{{.}}}.class{{/baseType}}{{#containerType}}, responseContainer = "{{{.}}}"{{/containerType}}){{^-last}},{{/-last}}
         {{/responses}}
     })
-    {{/oas3}}
+    {{/swagger1AnnotationLibrary}}
     {{#implicitHeaders}}
-    {{#oas3}}
+    {{#swagger2AnnotationLibrary}}
     @Parameters({
         {{#headerParams}}
         {{>paramDoc}}{{^-last}},{{/-last}}
         {{/headerParams}}
-    {{/oas3}}
-    {{^oas3}}
+    {{/swagger2AnnotationLibrary}}
+    {{#swagger1AnnotationLibrary}}
     @ApiImplicitParams({
         {{#headerParams}}
         {{>implicitHeader}}{{^-last}},{{/-last}}
         {{/headerParams}}
-    {{/oas3}}
+    {{/swagger1AnnotationLibrary}}
     })
     {{/implicitHeaders}}
     @RequestMapping(
@@ -189,15 +201,15 @@ public interface {{classname}} {
     {{#jdk8-default-interface}}default {{/jdk8-default-interface}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{#delegate-method}}_{{/delegate-method}}{{operationId}}(
         {{#allParams}}{{>queryParams}}{{>pathParams}}{{>headerParams}}{{>bodyParams}}{{>formParams}}{{>cookieParams}}{{^-last}},
         {{/-last}}{{/allParams}}{{#reactive}}{{#hasParams}},
-        {{/hasParams}}{{#oas3}}@Parameter(hidden = true){{/oas3}}{{#useSpringfox}}@springfox.documentation.annotations.ApiIgnore{{/useSpringfox}} final ServerWebExchange exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}{{#hasParams}},
-        {{/hasParams}}{{#useSpringfox}}@springfox.documentation.annotations.ApiIgnore {{/useSpringfox}}final org.springframework.data.domain.Pageable pageable{{/vendorExtensions.x-spring-paginated}}
+        {{/hasParams}}{{#swagger2AnnotationLibrary}}@Parameter(hidden = true){{/swagger2AnnotationLibrary}}{{#springFoxDocumentationProvider}}@ApiIgnore{{/springFoxDocumentationProvider}} final ServerWebExchange exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}{{#hasParams}},
+        {{/hasParams}}{{#springFoxDocumentationProvider}}@ApiIgnore {{/springFoxDocumentationProvider}}{{#springDocDocumentationProvider}}@ParameterObject {{/springDocDocumentationProvider}}final Pageable pageable{{/vendorExtensions.x-spring-paginated}}
     ){{^jdk8-default-interface}};{{/jdk8-default-interface}}{{#jdk8-default-interface}}{{#unhandledException}} throws Exception{{/unhandledException}} {
         {{#delegate-method}}
         return {{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#reactive}}{{#hasParams}}, {{/hasParams}}exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}, pageable{{/vendorExtensions.x-spring-paginated}});
     }
 
     // Override this method
-    {{#jdk8-default-interface}}default {{/jdk8-default-interface}} {{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#allParams}}{{^isFile}}{{^isBodyParam}}{{>optionalDataType}}{{/isBodyParam}}{{#isBodyParam}}{{^reactive}}{{{dataType}}}{{/reactive}}{{#reactive}}{{^isArray}}Mono<{{{dataType}}}>{{/isArray}}{{#isArray}}Flux<{{{baseType}}}>{{/isArray}}{{/reactive}}{{/isBodyParam}}{{/isFile}}{{#isFile}}{{#reactive}}Flux<Part>{{/reactive}}{{^reactive}}MultipartFile{{/reactive}}{{/isFile}} {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#reactive}}{{#hasParams}}, {{/hasParams}}{{#useSpringfox}}@springfox.documentation.annotations.ApiIgnore{{/useSpringfox}} final ServerWebExchange exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}, {{#useSpringfox}}@springfox.documentation.annotations.ApiIgnore{{/useSpringfox}} final org.springframework.data.domain.Pageable pageable{{/vendorExtensions.x-spring-paginated}}){{#unhandledException}} throws Exception{{/unhandledException}} {
+    {{#jdk8-default-interface}}default {{/jdk8-default-interface}} {{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#allParams}}{{^isFile}}{{^isBodyParam}}{{>optionalDataType}}{{/isBodyParam}}{{#isBodyParam}}{{^reactive}}{{{dataType}}}{{/reactive}}{{#reactive}}{{^isArray}}Mono<{{{dataType}}}>{{/isArray}}{{#isArray}}Flux<{{{baseType}}}>{{/isArray}}{{/reactive}}{{/isBodyParam}}{{/isFile}}{{#isFile}}{{#reactive}}Flux<Part>{{/reactive}}{{^reactive}}MultipartFile{{/reactive}}{{/isFile}} {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#reactive}}{{#hasParams}}, {{/hasParams}}{{#springFoxDocumentationProvider}}@ApiIgnore{{/springFoxDocumentationProvider}} final ServerWebExchange exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}, {{#springFoxDocumentationProvider}}@ApiIgnore{{/springFoxDocumentationProvider}} final Pageable pageable{{/vendorExtensions.x-spring-paginated}}){{#unhandledException}} throws Exception{{/unhandledException}} {
         {{/delegate-method}}
         {{^isDelegate}}
         {{>methodBody}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/apiController.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/apiController.mustache
index 0652a76d54e..374fe9eaa8c 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/apiController.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/apiController.mustache
@@ -3,7 +3,7 @@ package {{package}};
 {{^jdk8}}
 {{#imports}}import {{import}};
 {{/imports}}
-{{#oas3}}
+{{#swagger2AnnotationLibrary}}
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.media.Content;
@@ -11,10 +11,10 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
-{{/oas3}}
-{{^oas3}}
+{{/swagger2AnnotationLibrary}}
+{{^swagger1AnnotationLibrary}}
 import io.swagger.annotations.*;
-{{/oas3}}
+{{/swagger1AnnotationLibrary}}
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -31,35 +31,35 @@ import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
 {{/jdk8}}
+import org.springframework.beans.factory.annotation.Autowired;
 {{^isDelegate}}
 import org.springframework.web.context.request.NativeWebRequest;
 {{/isDelegate}}
 {{^jdk8}}
 import org.springframework.web.multipart.MultipartFile;
-{{#vendorExtensions.x-spring-paginated}}
-import org.springframework.data.domain.Pageable;
-{{/vendorExtensions.x-spring-paginated}}
 
-    {{#useBeanValidation}}
+{{#useBeanValidation}}
 import javax.validation.constraints.*;
 import javax.validation.Valid;
-    {{/useBeanValidation}}
+{{/useBeanValidation}}
 {{/jdk8}}
 {{#jdk8}}
 import java.util.Optional;
 {{/jdk8}}
 {{^jdk8}}
-    {{#useOptional}}
+{{#useOptional}}
 import java.util.Optional;
-    {{/useOptional}}
+{{/useOptional}}
 {{/jdk8}}
 {{^jdk8}}
 import java.util.List;
 import java.util.Map;
-    {{#async}}
+{{#async}}
 import java.util.concurrent.Callable;
-    {{/async}}
+{{/async}}
 {{/jdk8}}
+import javax.annotation.Generated;
+
 {{>generatedAnnotation}}
 @Controller
 {{=<% %>=}}
@@ -71,7 +71,7 @@ public class {{classname}}Controller implements {{classname}} {
 
     private final {{classname}}Delegate delegate;
 
-    public {{classname}}Controller(@org.springframework.beans.factory.annotation.Autowired(required = false) {{classname}}Delegate delegate) {
+    public {{classname}}Controller(@Autowired(required = false) {{classname}}Delegate delegate) {
     {{#jdk8}}
         this.delegate = Optional.ofNullable(delegate).orElse(new {{classname}}Delegate() {});
     }
@@ -93,7 +93,7 @@ public class {{classname}}Controller implements {{classname}} {
     {{/jdk8}}
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public {{classname}}Controller(NativeWebRequest request) {
         this.request = request;
     }
@@ -132,7 +132,7 @@ public class {{classname}}Controller implements {{classname}} {
     public {{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}(
         {{#allParams}}{{>queryParams}}{{>pathParams}}{{>headerParams}}{{>bodyParams}}{{>formParams}}{{>cookieParams}}{{^-last}},
         {{/-last}}{{/allParams}}{{#vendorExtensions.x-spring-paginated}}{{#hasParams}},
-        {{/hasParams}}{{#useSpringfox}}@springfox.documentation.annotations.ApiIgnore {{/useSpringfox}}final Pageable pageable{{/vendorExtensions.x-spring-paginated}}
+        {{/hasParams}}{{#springFoxDocumentationProvider}}@ApiIgnore {{/springFoxDocumentationProvider}}final Pageable pageable{{/vendorExtensions.x-spring-paginated}}
     ) {
     {{^isDelegate}}
         {{^async}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache
index 1a97106dc8f..4272dd2f0be 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/apiDelegate.mustache
@@ -2,9 +2,6 @@ package {{package}};
 
 {{#imports}}import {{import}};
 {{/imports}}
-{{#vendorExtensions.x-spring-paginated}}
-import org.springframework.data.domain.Pageable;
-{{/vendorExtensions.x-spring-paginated}}
 {{#jdk8}}
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -34,6 +31,7 @@ import java.util.Optional;
 {{#async}}
 import java.util.concurrent.{{^jdk8}}Callable{{/jdk8}}{{#jdk8}}CompletableFuture{{/jdk8}};
 {{/async}}
+import javax.annotation.Generated;
 
 {{#operations}}
 /**
@@ -72,7 +70,7 @@ public interface {{classname}}Delegate {
      */
     {{#jdk8-default-interface}}default {{/jdk8-default-interface}}{{#responseWrapper}}{{.}}<{{/responseWrapper}}ResponseEntity<{{>returnTypes}}>{{#responseWrapper}}>{{/responseWrapper}} {{operationId}}({{#allParams}}{{^isFile}}{{^isBodyParam}}{{>optionalDataType}}{{/isBodyParam}}{{#isBodyParam}}{{^reactive}}{{{dataType}}}{{/reactive}}{{#reactive}}{{^isArray}}Mono<{{{dataType}}}>{{/isArray}}{{#isArray}}Flux<{{{baseType}}}>{{/isArray}}{{/reactive}}{{/isBodyParam}}{{/isFile}}{{#isFile}}{{#isArray}}List<{{/isArray}}{{#reactive}}Flux<Part>{{/reactive}}{{^reactive}}MultipartFile{{/reactive}}{{#isArray}}>{{/isArray}}{{/isFile}} {{paramName}}{{^-last}},
         {{/-last}}{{/allParams}}{{#reactive}}{{#hasParams}},
-        {{/hasParams}}ServerWebExchange exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}, final org.springframework.data.domain.Pageable pageable{{/vendorExtensions.x-spring-paginated}}){{#unhandledException}} throws Exception{{/unhandledException}}{{^jdk8-default-interface}};{{/jdk8-default-interface}}{{#jdk8-default-interface}} {
+        {{/hasParams}}ServerWebExchange exchange{{/reactive}}{{#vendorExtensions.x-spring-paginated}}, final Pageable pageable{{/vendorExtensions.x-spring-paginated}}){{#unhandledException}} throws Exception{{/unhandledException}}{{^jdk8-default-interface}};{{/jdk8-default-interface}}{{#jdk8-default-interface}} {
         {{>methodBody}}
     }{{/jdk8-default-interface}}
 
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/apiException.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/apiException.mustache
index 74250662683..8230cce7664 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/apiException.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/apiException.mustache
@@ -1,5 +1,7 @@
 package {{apiPackage}};
 
+import javax.annotation.Generated;
+
 /**
  * The exception that can be used to store the HTTP status code returned by an API response.
  */
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/apiOriginFilter.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/apiOriginFilter.mustache
index 5cf72a7dc42..9fc5959c49c 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/apiOriginFilter.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/apiOriginFilter.mustache
@@ -2,6 +2,7 @@ package {{apiPackage}};
 
 import java.io.IOException;
 
+import javax.annotation.Generated;
 import javax.servlet.*;
 import javax.servlet.http.HttpServletResponse;
 
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/apiResponseMessage.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/apiResponseMessage.mustache
index 17b155f3b69..8faf577c824 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/apiResponseMessage.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/apiResponseMessage.mustache
@@ -1,5 +1,6 @@
 package {{apiPackage}};
 
+import javax.annotation.Generated;
 import javax.xml.bind.annotation.XmlTransient;
 
 {{>generatedAnnotation}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/beanValidation.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/beanValidation.mustache
index 06199f2eb44..34c7581d5d4 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/beanValidation.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/beanValidation.mustache
@@ -1,6 +1 @@
-{{#required}}
-  @NotNull
-{{/required}}{{#isContainer}}{{^isPrimitiveType}}{{^isEnum}}
-  @Valid{{/isEnum}}{{/isPrimitiveType}}{{/isContainer}}{{^isContainer}}{{^isPrimitiveType}}
-  @Valid{{/isPrimitiveType}}{{/isContainer}}
-{{>beanValidationCore}}
+{{#required}}@NotNull {{/required}}{{#isContainer}}{{^isPrimitiveType}}{{^isEnum}}@Valid {{/isEnum}}{{/isPrimitiveType}}{{/isContainer}}{{^isContainer}}{{^isPrimitiveType}}@Valid {{/isPrimitiveType}}{{/isContainer}}{{>beanValidationCore}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/dateTimeParam.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/dateTimeParam.mustache
index 3155e561956..5f4f3a264c1 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/dateTimeParam.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/dateTimeParam.mustache
@@ -1 +1 @@
-{{#isDate}} @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE){{/isDate}}{{#isDateTime}} @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME){{/isDateTime}}
\ No newline at end of file
+{{#isDate}} @DateTimeFormat(iso = DateTimeFormat.ISO.DATE){{/isDate}}{{#isDateTime}} @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME){{/isDateTime}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/enumOuterClass.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/enumOuterClass.mustache
index 3e5fd7ae409..0c1156aa15e 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/enumOuterClass.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/enumOuterClass.mustache
@@ -6,7 +6,9 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * {{^description}}Gets or Sets {{{name}}}{{/description}}{{{description}}}
  */
-{{>additionalEnumTypeAnnotations}}public enum {{{datatypeWithEnum}}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} {
+{{>additionalEnumTypeAnnotations}}
+{{>generatedAnnotation}}
+public enum {{{datatypeWithEnum}}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} {
   {{#gson}}
   {{#allowableValues}}{{#enumVars}}
   @SerializedName({{#isInteger}}"{{/isInteger}}{{#isDouble}}"{{/isDouble}}{{#isLong}}"{{/isLong}}{{#isFloat}}"{{/isFloat}}{{{value}}}{{#isInteger}}"{{/isInteger}}{{#isDouble}}"{{/isDouble}}{{#isLong}}"{{/isLong}}{{#isFloat}}"{{/isFloat}})
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/generatedAnnotation.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/generatedAnnotation.mustache
index 875d7b97afe..2f8ef3059f9 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/generatedAnnotation.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/generatedAnnotation.mustache
@@ -1 +1 @@
-@javax.annotation.Generated(value = "{{generatorClass}}"{{^hideGenerationTimestamp}}, date = "{{generatedDate}}"{{/hideGenerationTimestamp}})
\ No newline at end of file
+@Generated(value = "{{generatorClass}}"{{^hideGenerationTimestamp}}, date = "{{generatedDate}}"{{/hideGenerationTimestamp}})
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/homeController.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/homeController.mustache
index f909a15b37d..189eccefbc8 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/homeController.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/homeController.mustache
@@ -1,35 +1,36 @@
 package {{configPackage}};
 
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 import org.springframework.stereotype.Controller;
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
 import org.springframework.util.StreamUtils;
 import org.springframework.web.bind.annotation.GetMapping;
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 import org.springframework.web.bind.annotation.RequestMapping;
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
 import org.springframework.web.bind.annotation.ResponseBody;
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 {{#reactive}}
+import org.springframework.context.annotation.Bean;
 import org.springframework.web.reactive.function.server.RouterFunction;
 import org.springframework.web.reactive.function.server.ServerResponse;
 {{/reactive}}
 
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
 import java.io.IOException;
 import java.io.InputStream;
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 {{#reactive}}
 import java.net.URI;
 {{/reactive}}
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
 import java.nio.charset.Charset;
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 {{#reactive}}
 
 import static org.springframework.web.reactive.function.server.RequestPredicates.GET;
@@ -42,7 +43,7 @@ import static org.springframework.web.reactive.function.server.RouterFunctions.r
 @Controller
 public class HomeController {
 
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
     private static YAMLMapper yamlMapper = new YAMLMapper();
 
     @Value("classpath:/openapi.yaml")
@@ -67,20 +68,20 @@ public class HomeController {
         return yamlMapper.readValue(openapiContent(), Object.class);
     }
 
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 {{#reactive}}
     @Bean
     RouterFunction<ServerResponse> index() {
         return route(
             GET("/"),
-            req -> ServerResponse.temporaryRedirect(URI.create("{{#useSpringfox}}swagger-ui.html{{/useSpringfox}}{{^useSpringfox}}swagger-ui/index.html?url=../openapi.json{{/useSpringfox}}")).build()
+            req -> ServerResponse.temporaryRedirect(URI.create("{{#springFoxDocumentationProvider}}swagger-ui.html{{/springFoxDocumentationProvider}}{{^springFoxDocumentationProvider}}swagger-ui/index.html?url=../openapi.json{{/springFoxDocumentationProvider}}")).build()
         );
     }
 {{/reactive}}
 {{^reactive}}
     @RequestMapping("/")
     public String index() {
-        return "redirect:{{#useSpringfox}}swagger-ui.html{{/useSpringfox}}{{^useSpringfox}}swagger-ui/index.html?url=../openapi.json{{/useSpringfox}}";
+        return "redirect:{{#springFoxDocumentationProvider}}swagger-ui.html{{/springFoxDocumentationProvider}}{{^springFoxDocumentationProvider}}swagger-ui/index.html?url=../openapi.json{{/springFoxDocumentationProvider}}";
     }
 {{/reactive}}
 
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/README.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/README.mustache
index 196292339da..b304cb8866d 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/README.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/README.mustache
@@ -8,10 +8,10 @@ This server was generated by the [OpenAPI Generator](https://openapi-generator.t
 By using the [OpenAPI-Spec](https://openapis.org), you can easily generate a server stub.
 This is an example of building a OpenAPI-enabled server in Java using the SpringBoot framework.
 
-{{#useSpringfox}}
+{{#springFoxDocumentationProvider}}
 The underlying library integrating OpenAPI to SpringBoot is [springfox](https://github.com/springfox/springfox)
 
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 Start your server as a simple java application
 
 {{^reactive}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/application.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/application.mustache
index 6eb4ae24298..06f041051b9 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/application.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/application.mustache
@@ -1,6 +1,6 @@
-{{#useSpringfox}}
+{{#springFoxDocumentationProvider}}
 springfox.documentation.swagger.v2.path=/api-docs
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 server.port={{serverPort}}
 spring.jackson.date-format={{basePackage}}.RFC3339DateFormat
 spring.jackson.serialization.WRITE_DATES_AS_TIMESTAMPS=false
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/openapi2SpringBoot.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/openapi2SpringBoot.mustache
index 8180f6c50a0..a171e3cff16 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/openapi2SpringBoot.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/openapi2SpringBoot.mustache
@@ -12,9 +12,9 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 {{^reactive}}
 import org.springframework.web.servlet.config.annotation.CorsRegistry;
-    {{^useSpringfox}}
+    {{^springFoxDocumentationProvider}}
 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
-    {{/useSpringfox}}
+    {{/springFoxDocumentationProvider}}
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
     {{^java8}}
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@@ -22,9 +22,9 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter
 {{/reactive}}
 {{#reactive}}
 import org.springframework.web.reactive.config.CorsRegistry;
-    {{^useSpringfox}}
+    {{^springFoxDocumentationProvider}}
 import org.springframework.web.reactive.config.ResourceHandlerRegistry;
-    {{/useSpringfox}}
+    {{/springFoxDocumentationProvider}}
 import org.springframework.web.reactive.config.WebFluxConfigurer;
 {{/reactive}}
 
@@ -63,13 +63,13 @@ public class OpenAPI2SpringBoot implements CommandLineRunner {
                         .allowedMethods("*")
                         .allowedHeaders("Content-Type");
             }*/
-{{^useSpringfox}}
+{{^springFoxDocumentationProvider}}
 
             @Override
             public void addResourceHandlers(ResourceHandlerRegistry registry) {
                 registry.addResourceHandler("/swagger-ui/**").addResourceLocations("classpath:/META-INF/resources/webjars/swagger-ui/3.14.2/");
             }
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
         };
     }
 
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/pom.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/pom.mustache
index 05447fe9563..c929876ffc4 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-boot/pom.mustache
@@ -9,12 +9,22 @@
         <java.version>{{#java8}}1.8{{/java8}}{{^java8}}1.7{{/java8}}</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        {{#useSpringfox}}
+        {{#springFoxDocumentationProvider}}
         <springfox.version>2.9.2</springfox.version>
-        {{/useSpringfox}}
-        {{^useSpringfox}}
-        <swagger-core-version>{{#oas3}}2.1.11{{/oas3}}{{^oas3}}1.6.3{{/oas3}}</swagger-core-version>
-        {{/useSpringfox}}
+        {{/springFoxDocumentationProvider}}
+        {{#springDocDocumentationProvider}}
+        <springdoc.version>1.6.4</springdoc.version>
+        {{/springDocDocumentationProvider}}
+        {{^springFoxDocumentationProvider}}
+        {{^springDocDocumentationProvider}}
+        {{#swagger1AnnotationLibrary}}
+        <swagger-annotations.version>1.6.4</swagger-annotations.version>
+        {{/swagger1AnnotationLibrary}}
+        {{#swagger2AnnotationLibrary}}
+        <swagger-annotations.version>}2.1.12</swagger-annotations.version>
+        {{/swagger2AnnotationLibrary}}
+        {{/springDocDocumentationProvider}}
+        {{/springFoxDocumentationProvider}}
     </properties>
 {{#parentOverridden}}
     <parent>
@@ -27,7 +37,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>{{#springFoxDocumentationProvider}}2.5.8{{/springFoxDocumentationProvider}}{{^springFoxDocumentationProvider}}2.6.2{{/springFoxDocumentationProvider}}</version>
     </parent>
 {{/parentOverridden}}
     <build>
@@ -82,30 +92,40 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
-        {{#useSpringfox}}
+        {{#springDocDocumentationProvider}}
+          <!--SpringDoc dependencies -->
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
+        </dependency>
+        {{/springDocDocumentationProvider}}
+        {{#springFoxDocumentationProvider}}
         <!--SpringFox dependencies -->
         <dependency>
             <groupId>io.springfox</groupId>
             <artifactId>springfox-swagger2</artifactId>
             <version>${springfox.version}</version>
         </dependency>
-        {{/useSpringfox}}
-        {{^useSpringfox}}
-        {{#oas3}}
-        <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
-        </dependency>
-        {{/oas3}}
-        {{^oas3}}
+        {{/springFoxDocumentationProvider}}
+        {{^springFoxDocumentationProvider}}
+        {{^springDocDocumentationProvider}}
+        {{#swagger1AnnotationLibrary}}
         <dependency>
             <groupId>io.swagger</groupId>
             <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <version>${swagger-annotations.version}</version>
         </dependency>
-        {{/oas3}}
-        {{/useSpringfox}}
+        {{/swagger1AnnotationLibrary}}
+        {{#swagger2AnnotationLibrary}}
+        <dependency>
+            <groupId>io.swagger.core.v3</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>${swagger-annotations.version}</version>
+        </dependency>
+        {{/swagger2AnnotationLibrary}}
+        {{/springDocDocumentationProvider}}
+        {{/springFoxDocumentationProvider}}
         <!-- @Nullable annotation -->
         <dependency>
             <groupId>com.google.code.findbugs</groupId>
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-cloud/pom.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-cloud/pom.mustache
index f9228dd345e..64a0b7189ba 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-cloud/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-cloud/pom.mustache
@@ -9,10 +9,22 @@
         <java.version>{{#java8}}1.8{{/java8}}{{^java8}}1.7{{/java8}}</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>{{#oas3}}2.1.11{{/oas3}}{{^oas3}}1.6.3{{/oas3}}</swagger-core-version>
-        {{#useSpringfox}}
+        {{#springFoxDocumentationProvider}}
         <springfox.version>2.9.2</springfox.version>
-        {{/useSpringfox}}
+        {{/springFoxDocumentationProvider}}
+        {{#springDocDocumentationProvider}}
+        <springdoc.version>1.6.4</springdoc.version>
+        {{/springDocDocumentationProvider}}
+        {{^springFoxDocumentationProvider}}
+        {{^springDocDocumentationProvider}}
+        {{#swagger1AnnotationLibrary}}
+        <swagger-annotations.version>1.6.4</swagger-annotations.version>
+        {{/swagger1AnnotationLibrary}}
+        {{#swagger2AnnotationLibrary}}
+        <swagger-annotations.version>}2.1.12</swagger-annotations.version>
+        {{/swagger2AnnotationLibrary}}
+        {{/springDocDocumentationProvider}}
+        {{/springFoxDocumentationProvider}}
     </properties>
 {{#parentOverridden}}
     <parent>
@@ -47,30 +59,40 @@
 
 {{/parentOverridden}}
     <dependencies>
-        {{#useSpringfox}}
+        {{#springDocDocumentationProvider}}
+        <!--SpringDoc dependencies -->
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
+        </dependency>
+        {{/springDocDocumentationProvider}}
+        {{#springFoxDocumentationProvider}}
         <!--SpringFox dependencies -->
         <dependency>
             <groupId>io.springfox</groupId>
             <artifactId>springfox-swagger2</artifactId>
             <version>${springfox.version}</version>
         </dependency>
-        {{/useSpringfox}}
-        {{^useSpringfox}}
-        {{#oas3}}
-        <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
-        </dependency>
-        {{/oas3}}
-        {{^oas3}}
+        {{/springFoxDocumentationProvider}}
+        {{^springFoxDocumentationProvider}}
+        {{^springDocDocumentationProvider}}
+        {{#swagger1AnnotationLibrary}}
         <dependency>
             <groupId>io.swagger</groupId>
             <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <version>${swagger-annotations.version}</version>
         </dependency>
-        {{/oas3}}
-        {{/useSpringfox}}
+        {{/swagger1AnnotationLibrary}}
+        {{#swagger2AnnotationLibrary}}
+        <dependency>
+            <groupId>io.swagger.core.v3</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>${swagger-annotations.version}</version>
+        </dependency>
+        {{/swagger2AnnotationLibrary}}
+        {{/springDocDocumentationProvider}}
+        {{/springFoxDocumentationProvider}}
         <!-- @Nullable annotation -->
         <dependency>
             <groupId>com.google.code.findbugs</groupId>
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/README.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/README.mustache
index efc3e8921a6..bdd21d95a70 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/README.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/README.mustache
@@ -6,9 +6,9 @@ Spring MVC Server
 ## Overview
 This server was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [OpenAPI-Spec](https://openapis.org), you can easily generate a server stub.  This is an example of building a OpenAPI-enabled server in Java using the Spring MVC framework.
 
-{{#useSpringfox}}
+{{#springFoxDocumentationProvider}}
 The underlying library integrating OpenAPI to Spring-MVC is [springfox](https://github.com/springfox/springfox)
 
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 You can view the server in swagger-ui by pointing to
 http://localhost:{{serverPort}}{{contextPath}}{{^contextPath}}/{{/contextPath}}/
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/application.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/application.mustache
index 67214287ed3..655c870be61 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/application.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/application.mustache
@@ -1,3 +1,3 @@
-{{#useSpringfox}}
+{{#springFoxDocumentationProvider}}
 springfox.documentation.swagger.v2.path=/api-docs
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/openapiUiConfiguration.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/openapiUiConfiguration.mustache
index 3b44ddf65c4..a9b5410403d 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/openapiUiConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/openapiUiConfiguration.mustache
@@ -11,9 +11,9 @@ import org.openapitools.jackson.nullable.JsonNullableModule;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.PropertySource;
-{{#useSpringfox}}
+{{#springFoxDocumentationProvider}}
 import org.springframework.context.annotation.Import;
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 import org.springframework.context.annotation.Bean;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.http.converter.StringHttpMessageConverter;
@@ -32,15 +32,16 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
 
 import java.util.List;
+import javax.annotation.Generated;
 
 {{>generatedAnnotation}}
 @Configuration
 @ComponentScan(basePackages = {"{{apiPackage}}", "{{configPackage}}"})
 @EnableWebMvc
 @PropertySource("classpath:application.properties")
-{{#useSpringfox}}
+{{#springFoxDocumentationProvider}}
 @Import(OpenAPIDocumentationConfig.class)
-{{/useSpringfox}}
+{{/springFoxDocumentationProvider}}
 public class OpenAPIUiConfiguration extends WebMvcConfigurerAdapter {
   private static final String[] SERVLET_RESOURCE_LOCATIONS = { "/" };
 
@@ -80,11 +81,11 @@ public class OpenAPIUiConfiguration extends WebMvcConfigurerAdapter {
     if (!registry.hasMappingForPattern("/**")) {
       registry.addResourceHandler("/**").addResourceLocations(RESOURCE_LOCATIONS);
     }
-    {{^useSpringfox}}
+    {{^springFoxDocumentationProvider}}
     if (!registry.hasMappingForPattern("/swagger-ui/**")) {
       registry.addResourceHandler("/swagger-ui/**").addResourceLocations("classpath:/META-INF/resources/webjars/swagger-ui/3.14.2/");
     }
-    {{/useSpringfox}}
+    {{/springFoxDocumentationProvider}}
   }
 
   /*@Override
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/pom.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/pom.mustache
index f0f17f6b208..3610261ac22 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/pom.mustache
@@ -147,7 +147,7 @@
             <artifactId>jakarta.xml.bind-api</artifactId>
             <version>${jakarta.xml.bind-version}</version>
         </dependency>
-        {{#useSpringfox}}
+        {{#springFoxDocumentationProvider}}
         <!--SpringFox dependencies-->
         <dependency>
             <groupId>io.springfox</groupId>
@@ -165,8 +165,8 @@
             <artifactId>springfox-swagger-ui</artifactId>
             <version>${springfox-version}</version>
         </dependency>
-        {{/useSpringfox}}
-        {{^useSpringfox}}
+        {{/springFoxDocumentationProvider}}
+        {{^springFoxDocumentationProvider}}
         <dependency>
             <groupId>io.springfox</groupId>
             <artifactId>springfox-swagger2</artifactId>
@@ -208,7 +208,7 @@
             <artifactId>jackson-dataformat-yaml</artifactId>
             <version>${jackson-version}</version>
         </dependency>
-        {{/useSpringfox}}
+        {{/springFoxDocumentationProvider}}
         {{#withXml}}
         <!-- XML processing: Jackson -->
         <dependency>
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webApplication.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webApplication.mustache
index 2b16399e979..ff18a53cdac 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webApplication.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webApplication.mustache
@@ -1,6 +1,7 @@
 package {{configPackage}};
 
 import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+import javax.annotation.Generated;
 
 {{>generatedAnnotation}}
 public class WebApplication extends AbstractAnnotationConfigDispatcherServletInitializer {
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webMvcConfiguration.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webMvcConfiguration.mustache
index d60c126316e..a77ca1552b9 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webMvcConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/libraries/spring-mvc/webMvcConfiguration.mustache
@@ -2,6 +2,7 @@ package {{configPackage}};
 
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import javax.annotation.Generated;
 
 {{>generatedAnnotation}}
 public class WebMvcConfiguration extends WebMvcConfigurationSupport {
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/model.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/model.mustache
index 05eb15e1054..9261660fe36 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/model.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/model.mustache
@@ -26,9 +26,9 @@ import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
 {{/withXml}}
 {{/jackson}}
-{{#oas3}}
+{{#swagger2AnnotationLibrary}}
 import io.swagger.v3.oas.annotations.media.Schema;
-{{/oas3}}
+{{/swagger2AnnotationLibrary}}
 
 {{#withXml}}
 import javax.xml.bind.annotation.*;
@@ -40,6 +40,7 @@ import org.springframework.hateoas.RepresentationModel;
 {{/parent}}
 
 import java.util.*;
+import javax.annotation.Generated;
 
 {{#models}}
 {{#model}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/notFoundException.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/notFoundException.mustache
index 40c25c5ea5c..9eb12cd17f4 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/notFoundException.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/notFoundException.mustache
@@ -1,5 +1,7 @@
 package {{apiPackage}};
 
+import javax.annotation.Generated;
+
 {{>generatedAnnotation}}
 public class NotFoundException extends ApiException {
     private int code;
@@ -7,4 +9,4 @@ public class NotFoundException extends ApiException {
         super(code, msg);
         this.code = code;
     }
-}
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/openapiDocumentationConfig.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/openapiDocumentationConfig.mustache
index 7dd911a1ae5..cd21ad973ca 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/openapiDocumentationConfig.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/openapiDocumentationConfig.mustache
@@ -18,6 +18,7 @@ import springfox.documentation.swagger2.annotations.EnableSwagger2;
 {{#useOptional}}
 import java.util.Optional;
 {{/useOptional}}
+import javax.annotation.Generated;
 import javax.servlet.ServletContext;
 
 {{>generatedAnnotation}}
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/paramDoc.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/paramDoc.mustache
index 7f3eb71e0b0..304e097c219 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/paramDoc.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/paramDoc.mustache
@@ -1 +1 @@
-{{#oas3}}@Parameter(name = "{{{baseName}}}", description = "{{{description}}}"{{#required}}, required = true{{/required}}, schema = @Schema(description = ""{{#allowableValues}}, {{> allowableValues }}{{/allowableValues}}{{^isContainer}}{{#defaultValue}}, defaultValue = "{{{.}}}"{{/defaultValue}}{{/isContainer}})){{/oas3}}{{^oas3}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, {{> allowableValues }}{{/allowableValues}}{{^isContainer}}{{#defaultValue}}, defaultValue = "{{{.}}}"{{/defaultValue}}{{/isContainer}}){{/oas3}}
\ No newline at end of file
+{{#swagger2AnnotationLibrary}}@Parameter(name = "{{{baseName}}}", description = "{{{description}}}"{{#required}}, required = true{{/required}}, schema = @Schema(description = ""{{#allowableValues}}, {{> allowableValues }}{{/allowableValues}}{{^isContainer}}{{#defaultValue}}, defaultValue = "{{{.}}}"{{/defaultValue}}{{/isContainer}})){{/swagger2AnnotationLibrary}}{{#swagger1AnnotationLibrary}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, {{> allowableValues }}{{/allowableValues}}{{^isContainer}}{{#defaultValue}}, defaultValue = "{{{.}}}"{{/defaultValue}}{{/isContainer}}){{/swagger1AnnotationLibrary}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/pojo.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/pojo.mustache
index f9bc2ae722a..c33f9ac03b4 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/pojo.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/pojo.mustache
@@ -1,14 +1,29 @@
 /**
  * {{description}}{{^description}}{{classname}}{{/description}}
- */{{#description}}
-{{#oas3}}@Schema({{#name}}name = "{{name}}",{{/name}}{{/oas3}}{{^oas3}}@ApiModel({{/oas3}}description = "{{{.}}}"){{/description}}
-{{>generatedAnnotation}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{>xmlAnnotation}}{{>additionalModelTypeAnnotations}}
+ */
+{{>additionalModelTypeAnnotations}}
+{{#description}}
+{{#swagger1AnnotationLibrary}}
+@ApiModel(description = "{{{description}}}")
+{{/swagger1AnnotationLibrary}}
+{{#swagger2AnnotationLibrary}}
+@Schema({{#name}}name = "{{name}}", {{/name}}description = "{{{description}}}")
+{{/swagger2AnnotationLibrary}}
+{{/description}}
+{{#discriminator}}
+{{>typeInfoAnnotation}}
+{{/discriminator}}
+{{#withXml}}
+{{>xmlAnnotation}}
+{{/withXml}}
+{{>generatedAnnotation}}
 public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#hateoas}}extends RepresentationModel<{{classname}}> {{/hateoas}}{{/parent}} {{#serializableModel}}implements Serializable{{/serializableModel}} {
 {{#serializableModel}}
-  private static final long serialVersionUID = 1L;
 
+  private static final long serialVersionUID = 1L;
 {{/serializableModel}}
   {{#vars}}
+
     {{#isEnum}}
     {{^isContainer}}
 {{>enumClass}}
@@ -20,8 +35,10 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#ha
     {{/isContainer}}
     {{/isEnum}}
   {{#jackson}}
-  @JsonProperty("{{baseName}}"){{#withXml}}
-  @JacksonXmlProperty({{#isXmlAttribute}}isAttribute = true, {{/isXmlAttribute}}{{#xmlNamespace}}namespace="{{.}}", {{/xmlNamespace}}localName = "{{xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}"){{/withXml}}
+  @JsonProperty("{{baseName}}")
+  {{#withXml}}
+  @JacksonXmlProperty({{#isXmlAttribute}}isAttribute = true, {{/isXmlAttribute}}{{#xmlNamespace}}namespace="{{.}}", {{/xmlNamespace}}localName = "{{xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
+  {{/withXml}}
   {{/jackson}}
   {{#gson}}
   @SerializedName("{{baseName}}")
@@ -37,10 +54,10 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#ha
   {{/isContainer}}
   {{^isContainer}}
   {{#isDate}}
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   {{/isDate}}
   {{#isDateTime}}
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   {{/isDateTime}}
   {{#openApiNullable}}
   private {{>nullableDataType}} {{name}}{{#isNullable}} = JsonNullable.undefined(){{/isNullable}}{{^isNullable}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{/isNullable}};
@@ -49,9 +66,10 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#ha
   private {{>nullableDataType}} {{name}}{{#isNullable}} = null{{/isNullable}}{{^isNullable}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{/isNullable}};
   {{/openApiNullable}}
   {{/isContainer}}
-
   {{/vars}}
   {{#vars}}
+
+  {{! begin feature: fluent setter methods }}
   public {{classname}} {{name}}({{{datatypeWithEnum}}} {{name}}) {
     {{#openApiNullable}}
     this.{{name}} = {{#isNullable}}JsonNullable.of({{name}}){{/isNullable}}{{^isNullable}}{{name}}{{/isNullable}};
@@ -93,6 +111,8 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#ha
     return this;
   }
   {{/isMap}}
+  {{! end feature: fluent setter methods }}
+  {{! begin feature: getter and setter }}
 
   /**
   {{#description}}
@@ -109,19 +129,29 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#ha
   {{/maximum}}
    * @return {{name}}
   */
- {{#vendorExtensions.x-extra-annotation}}
+  {{#vendorExtensions.x-extra-annotation}}
   {{{vendorExtensions.x-extra-annotation}}}
   {{/vendorExtensions.x-extra-annotation}}
-  {{#oas3}}@Schema({{#name}}name = "{{{name}}}", {{/name}}{{/oas3}}{{^oas3}}@ApiModelProperty({{/oas3}}{{#example}}example = "{{{.}}}", {{/example}}{{#required}}required = {{required}}, {{/required}}{{#isReadOnly}}readOnly = {{{isReadOnly}}}, {{/isReadOnly}}{{#oas3}}defaultValue = {{/oas3}}{{^oas3}}value = {{/oas3}}"{{{description}}}")
-{{#useBeanValidation}}{{>beanValidation}}{{/useBeanValidation}}  public {{>nullableDataType}} {{getter}}() {
+  {{#useBeanValidation}}
+  {{>beanValidation}}
+  {{/useBeanValidation}}
+  {{#swagger2AnnotationLibrary}}
+  @Schema(name = "{{{baseName}}}", {{#isReadOnly}}accessMode = Schema.AccessMode.READ_ONLY, {{/isReadOnly}}{{#example}}example = "{{{.}}}", {{/example}}{{#description}}description = "{{{.}}}", {{/description}}required = {{{required}}})
+  {{/swagger2AnnotationLibrary}}
+  {{#swagger1AnnotationLibrary}}
+  @ApiModelProperty({{#example}}example = "{{{.}}}", {{/example}}{{#required}}required = {{required}}, {{/required}}{{#isReadOnly}}readOnly = {{{isReadOnly}}}, {{/isReadOnly}}value = "{{{description}}}")
+  {{/swagger1AnnotationLibrary}}
+  public {{>nullableDataType}} {{getter}}() {
     return {{name}};
   }
 
-  {{#vendorExtensions.x-setter-extra-annotation}}{{{vendorExtensions.x-setter-extra-annotation}}}
-  {{/vendorExtensions.x-setter-extra-annotation}}public void {{setter}}({{>nullableDataType}} {{name}}) {
+  {{#vendorExtensions.x-setter-extra-annotation}}
+  {{{vendorExtensions.x-setter-extra-annotation}}}
+  {{/vendorExtensions.x-setter-extra-annotation}}
+  public void {{setter}}({{>nullableDataType}} {{name}}) {
     this.{{name}} = {{name}};
   }
-
+  {{! end feature: getter and setter }}
   {{/vars}}
 
   @Override
@@ -159,7 +189,9 @@ public class {{classname}} {{#parent}}extends {{{.}}}{{/parent}}{{^parent}}{{#ha
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class {{classname}} {\n");
-    {{#parent}}sb.append("    ").append(toIndentedString(super.toString())).append("\n");{{/parent}}
+    {{#parent}}
+    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+    {{/parent}}
     {{#vars}}sb.append("    {{name}}: ").append(toIndentedString({{name}})).append("\n");
     {{/vars}}sb.append("}");
     return sb.toString();
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/typeInfoAnnotation.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/typeInfoAnnotation.mustache
index 81c2ba05f90..ccb7d486841 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/typeInfoAnnotation.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/typeInfoAnnotation.mustache
@@ -1,8 +1,7 @@
 {{#jackson}}
-
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "{{{discriminator.propertyBaseName}}}", visible = true)
 @JsonSubTypes({
   {{#discriminator.mappedModels}}
   @JsonSubTypes.Type(value = {{modelName}}.class, name = "{{^vendorExtensions.x-discriminator-value}}{{mappingName}}{{/vendorExtensions.x-discriminator-value}}{{#vendorExtensions.x-discriminator-value}}{{{vendorExtensions.x-discriminator-value}}}{{/vendorExtensions.x-discriminator-value}}"),
   {{/discriminator.mappedModels}}
-}){{/jackson}}
+}){{/jackson}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/JavaSpring/xmlAnnotation.mustache b/modules/openapi-generator/src/main/resources/JavaSpring/xmlAnnotation.mustache
index 70e2626635f..a9e6fb0fa0b 100644
--- a/modules/openapi-generator/src/main/resources/JavaSpring/xmlAnnotation.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaSpring/xmlAnnotation.mustache
@@ -3,4 +3,5 @@
 @JacksonXmlRootElement({{#xmlNamespace}}namespace="{{.}}", {{/xmlNamespace}}localName = "{{xmlName}}{{^xmlName}}{{classname}}{{/xmlName}}")
 {{/jackson}}
 @XmlRootElement({{#xmlNamespace}}namespace="{{.}}", {{/xmlNamespace}}name = "{{xmlName}}{{^xmlName}}{{classname}}{{/xmlName}}")
-@XmlAccessorType(XmlAccessType.FIELD){{/withXml}}
\ No newline at end of file
+@XmlAccessorType(XmlAccessType.FIELD)
+{{/withXml}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/Javascript-Flowtyped/package.mustache b/modules/openapi-generator/src/main/resources/Javascript-Flowtyped/package.mustache
index a4552cdc5fb..6a1cfec3179 100644
--- a/modules/openapi-generator/src/main/resources/Javascript-Flowtyped/package.mustache
+++ b/modules/openapi-generator/src/main/resources/Javascript-Flowtyped/package.mustache
@@ -24,7 +24,7 @@
   },
 {{/npmRepository}}
   "dependencies": {
-    "node-fetch": ">=2.6.1",
+    "node-fetch": ">=3.1.1",
     "portable-fetch": "^3.0.0"
   },
   "devDependencies": {
diff --git a/modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig b/modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig
index 55a40397894..daa315be174 100644
--- a/modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig
+++ b/modules/openapi-generator/src/main/resources/META-INF/services/org.openapitools.codegen.CodegenConfig
@@ -55,12 +55,14 @@ org.openapitools.codegen.languages.JavaClientCodegen
 org.openapitools.codegen.languages.JavaCXFClientCodegen
 org.openapitools.codegen.languages.JavaInflectorServerCodegen
 org.openapitools.codegen.languages.JavaMicronautClientCodegen
+org.openapitools.codegen.languages.JavaMicronautServerCodegen
 org.openapitools.codegen.languages.JavaMSF4JServerCodegen
 org.openapitools.codegen.languages.JavaPKMSTServerCodegen
 org.openapitools.codegen.languages.JavaPlayFrameworkCodegen
 org.openapitools.codegen.languages.JavaUndertowServerCodegen
 org.openapitools.codegen.languages.JavaVertXServerCodegen
 org.openapitools.codegen.languages.JavaVertXWebServerCodegen
+org.openapitools.codegen.languages.JavaCamelServerCodegen
 org.openapitools.codegen.languages.JavaCXFServerCodegen
 org.openapitools.codegen.languages.JavaCXFExtServerCodegen
 org.openapitools.codegen.languages.JavaJAXRSCXFCDIServerCodegen
@@ -98,6 +100,7 @@ org.openapitools.codegen.languages.ProtobufSchemaCodegen
 org.openapitools.codegen.languages.PythonLegacyClientCodegen
 org.openapitools.codegen.languages.PythonClientCodegen
 org.openapitools.codegen.languages.PythonFastAPIServerCodegen
+org.openapitools.codegen.languages.PythonExperimentalClientCodegen
 org.openapitools.codegen.languages.PythonFlaskConnexionServerCodegen
 org.openapitools.codegen.languages.PythonAiohttpConnexionServerCodegen
 org.openapitools.codegen.languages.PythonBluePlanetServerCodegen
@@ -121,7 +124,6 @@ org.openapitools.codegen.languages.SpringCodegen
 org.openapitools.codegen.languages.StaticDocCodegen
 org.openapitools.codegen.languages.StaticHtmlGenerator
 org.openapitools.codegen.languages.StaticHtml2Generator
-org.openapitools.codegen.languages.Swift4Codegen
 org.openapitools.codegen.languages.Swift5ClientCodegen
 org.openapitools.codegen.languages.TypeScriptClientCodegen
 org.openapitools.codegen.languages.TypeScriptAngularClientCodegen
diff --git a/modules/openapi-generator/src/main/resources/avro-schema/typeProperty.mustache b/modules/openapi-generator/src/main/resources/avro-schema/typeProperty.mustache
index a2d5c7a1f7e..574d9b17124 100644
--- a/modules/openapi-generator/src/main/resources/avro-schema/typeProperty.mustache
+++ b/modules/openapi-generator/src/main/resources/avro-schema/typeProperty.mustache
@@ -1 +1 @@
-{{^isEnum}}{{^isContainer}}{{#isPrimitiveType}}"{{dataType}}"{{/isPrimitiveType}}{{#isModel}}"{{package}}.{{dataType}}"{{/isModel}}{{#isFile}}"{{package}}.{{dataType}}"{{/isFile}}{{/isContainer}}{{#isContainer}}{{>typeArray}}{{/isContainer}}{{/isEnum}}{{#isEnum}}{{>typeEnum}}{{/isEnum}}
\ No newline at end of file
+{{^isEnum}}{{^isContainer}}{{#isPrimitiveType}}"{{dataType}}"{{/isPrimitiveType}}{{^isPrimitiveType}}"{{package}}.{{dataType}}"{{/isPrimitiveType}}{{/isContainer}}{{#isContainer}}{{>typeArray}}{{/isContainer}}{{/isEnum}}{{#isEnum}}{{>typeEnum}}{{/isEnum}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/cpp-qt-qhttpengine-server/apirouter.h.mustache b/modules/openapi-generator/src/main/resources/cpp-qt-qhttpengine-server/apirouter.h.mustache
index 028a3097e25..f30a069c19b 100644
--- a/modules/openapi-generator/src/main/resources/cpp-qt-qhttpengine-server/apirouter.h.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-qt-qhttpengine-server/apirouter.h.mustache
@@ -36,7 +36,7 @@ protected:
         if (socket->bytesAvailable() >= socket->contentLength()) {
             emit requestReceived(socket);
         } else {
-            connect(socket, &Socket::readChannelFinished, [this, socket, m]() {
+            connect(socket, &QHttpEngine::Socket::readChannelFinished, [this, socket]() {
                 emit requestReceived(socket);
             });
         }
@@ -91,7 +91,7 @@ private :
     }
 
     inline QRegularExpressionMatch getRequestMatch(QString serverTemplatePath, QString requestPath){
-        QRegularExpression parExpr( R"(\{([^\/\\s]+)\})" );
+        QRegularExpression parExpr( R"(\{([^\/\s]+)\})" );
         serverTemplatePath.replace( parExpr, R"((?<\1>[^\/\s]+))" );
         serverTemplatePath.append("[\\/]?$");
         QRegularExpression pathExpr( serverTemplatePath );
@@ -105,4 +105,4 @@ private :
 }
 {{/cppNamespaceDeclarations}}
 
-#endif // {{prefix}}_APIROUTER_H
\ No newline at end of file
+#endif // {{prefix}}_APIROUTER_H
diff --git a/modules/openapi-generator/src/main/resources/cpp-tizen-client/api-body.mustache b/modules/openapi-generator/src/main/resources/cpp-tizen-client/api-body.mustache
index a9b960e76eb..9239b3762f0 100644
--- a/modules/openapi-generator/src/main/resources/cpp-tizen-client/api-body.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-tizen-client/api-body.mustache
@@ -299,7 +299,7 @@ static bool {{nickname}}Helper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = {{nickname}}Processor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
diff --git a/modules/openapi-generator/src/main/resources/cpp-tizen-client/requestinfo.mustache b/modules/openapi-generator/src/main/resources/cpp-tizen-client/requestinfo.mustache
index eb47133b853..5966669be45 100644
--- a/modules/openapi-generator/src/main/resources/cpp-tizen-client/requestinfo.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-tizen-client/requestinfo.mustache
@@ -45,7 +45,7 @@ public:
 
 	~RequestInfo()
 	{
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (this->p_chunk) {
 			if((this->p_chunk)->memory) {
 				free((this->p_chunk)->memory);
diff --git a/modules/openapi-generator/src/main/resources/crystal/api.mustache b/modules/openapi-generator/src/main/resources/crystal/api.mustache
index 28758d68a5f..c39d99bf0fe 100644
--- a/modules/openapi-generator/src/main/resources/crystal/api.mustache
+++ b/modules/openapi-generator/src/main/resources/crystal/api.mustache
@@ -125,7 +125,7 @@ module {{moduleName}}
       {{/hasValidation}}
       {{/allParams}}
       # resource path
-      local_var_path = "{{{path}}}"{{#pathParams}}.sub("{" + "{{baseName}}" + "}", URI.encode({{paramName}}.to_s){{^strictSpecBehavior}}.gsub("%2F", "/"){{/strictSpecBehavior}}){{/pathParams}}
+      local_var_path = "{{{path}}}"{{#pathParams}}.sub("{" + "{{baseName}}" + "}", URI.encode_path({{paramName}}.to_s){{^strictSpecBehavior}}.gsub("%2F", "/"){{/strictSpecBehavior}}){{/pathParams}}
 
       # query parameters
       query_params = Hash(String, String).new
diff --git a/modules/openapi-generator/src/main/resources/crystal/partial_model_generic.mustache b/modules/openapi-generator/src/main/resources/crystal/partial_model_generic.mustache
index 4f2de178b0e..8e09ec2aba3 100644
--- a/modules/openapi-generator/src/main/resources/crystal/partial_model_generic.mustache
+++ b/modules/openapi-generator/src/main/resources/crystal/partial_model_generic.mustache
@@ -4,14 +4,28 @@
   class {{classname}}{{#parent}} < {{{.}}}{{/parent}}
     include JSON::Serializable
 
-    {{#vars}}
+    {{#hasRequired}}
+    # Required properties
+    {{/hasRequired}}
+    {{#requiredVars}}
     {{#description}}
     # {{{.}}}
     {{/description}}
-    @[JSON::Field(key: "{{{baseName}}}", type: {{{dataType}}}{{#defaultValue}}, default: {{{defaultValue}}}{{/defaultValue}}{{#isNullable}}, nillable: true, emit_null: true{{/isNullable}})]
+    @[JSON::Field(key: "{{{baseName}}}", type: {{{dataType}}}{{#defaultValue}}, default: {{{defaultValue}}}{{/defaultValue}}, nillable: false, emit_null: false)]
     property {{{name}}} : {{{dataType}}}
 
-  {{/vars}}
+    {{/requiredVars}}
+    {{#hasOptional}}
+    # Optional properties
+    {{/hasOptional}}
+    {{#optionalVars}}
+    {{#description}}
+    # {{{.}}}
+    {{/description}}
+    @[JSON::Field(key: "{{{baseName}}}", type: {{{dataType}}}?{{#defaultValue}}, default: {{{defaultValue}}}{{/defaultValue}}, nillable: true, emit_null: false)]
+    property {{{name}}} : {{{dataType}}}?
+
+    {{/optionalVars}}
 {{#hasEnums}}
     class EnumAttributeValidator
       getter datatype : String
@@ -74,7 +88,7 @@
     {{/discriminator}}
     # Initializes the object
     # @param [Hash] attributes Model attributes in the form of hash
-    def initialize({{#vars}}@{{{name}}} : {{{dataType}}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/vars}})
+    def initialize({{#requiredVars}}@{{{name}}} : {{{dataType}}}{{^-last}}, {{/-last}}{{/requiredVars}}{{#hasRequired}}{{#hasOptional}}, {{/hasOptional}}{{/hasRequired}}{{#optionalVars}}@{{{name}}} : {{{dataType}}}?{{^-last}}, {{/-last}}{{/optionalVars}})
     end
 
     # Show invalid properties with the reasons. Usually used together with valid?
@@ -82,14 +96,6 @@
     def list_invalid_properties
       invalid_properties = {{^parent}}Array(String).new{{/parent}}{{#parent}}super{{/parent}}
       {{#vars}}
-      {{^isNullable}}
-      {{#required}}
-      if @{{{name}}}.nil?
-        invalid_properties.push("invalid value for \"{{{name}}}\", {{{name}}} cannot be nil.")
-      end
-
-      {{/required}}
-      {{/isNullable}}
       {{#hasValidation}}
       {{#maxLength}}
       if {{^required}}!@{{{name}}}.nil? && {{/required}}@{{{name}}}.to_s.size > {{{maxLength}}}
@@ -143,11 +149,6 @@
     # @return true if the model is valid
     def valid?
       {{#vars}}
-      {{^isNullable}}
-      {{#required}}
-      return false if @{{{name}}}.nil?
-      {{/required}}
-      {{/isNullable}}
       {{#isEnum}}
       {{^isContainer}}
       {{{name}}}_validator = EnumAttributeValidator.new("{{{dataType}}}", [{{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}}])
@@ -217,14 +218,6 @@
     # Custom attribute writer method with validation
     # @param [Object] {{{name}}} Value to be assigned
     def {{{name}}}=({{{name}}})
-      {{^isNullable}}
-      {{#required}}
-      if {{{name}}}.nil?
-        raise ArgumentError.new("{{{name}}} cannot be nil")
-      end
-
-      {{/required}}
-      {{/isNullable}}
       {{#maxLength}}
       if {{^required}}!{{{name}}}.nil? && {{/required}}{{{name}}}.to_s.size > {{{maxLength}}}
         raise ArgumentError.new("invalid value for \"{{{name}}}\", the character length must be smaller than or equal to {{{maxLength}}}.")
@@ -277,7 +270,7 @@
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class{{#vars}} &&
           {{name}} == o.{{name}}{{/vars}}{{#parent}} && super(o){{/parent}}
     end
diff --git a/modules/openapi-generator/src/main/resources/crystal/spec_helper.mustache b/modules/openapi-generator/src/main/resources/crystal/spec_helper.mustache
index 9facafa4a93..56675bb6876 100644
--- a/modules/openapi-generator/src/main/resources/crystal/spec_helper.mustache
+++ b/modules/openapi-generator/src/main/resources/crystal/spec_helper.mustache
@@ -3,4 +3,12 @@
 # load modules
 require "spec"
 require "json"
-require "../src/{{{shardName}}}"
\ No newline at end of file
+require "../src/{{{shardName}}}"
+
+def assert_compilation_error(path : String, message : String) : Nil
+  buffer = IO::Memory.new
+  result = Process.run("crystal", ["run", "--no-color", "--no-codegen", path], error: buffer)
+  result.success?.should be_false
+  buffer.to_s.should contain message
+  buffer.close
+end
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore-functions/ApiClient.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore-functions/ApiClient.mustache
index 65cbf8d76bc..72cbbf86b7e 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore-functions/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore-functions/ApiClient.mustache
@@ -23,9 +23,6 @@ using ErrorEventArgs = Newtonsoft.Json.Serialization.ErrorEventArgs;
 using RestSharp;
 using RestSharp.Deserializers;
 using RestSharpMethod = RestSharp.Method;
-{{#useWebRequest}}
-using System.Net.Http;
-{{/useWebRequest}}
 {{#supportsRetry}}
 using Polly;
 {{/supportsRetry}}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore-functions/libraries/httpclient/ApiClient.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore-functions/libraries/httpclient/ApiClient.mustache
index e9c39ea9f6d..ca187c688d9 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore-functions/libraries/httpclient/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore-functions/libraries/httpclient/ApiClient.mustache
@@ -20,9 +20,6 @@ using System.Web;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 using ErrorEventArgs = Newtonsoft.Json.Serialization.ErrorEventArgs;
-{{#useWebRequest}}
-using System.Net.Http;
-{{/useWebRequest}}
 using System.Net.Http;
 using System.Net.Http.Headers;
 {{#supportsRetry}}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/ApiClient.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/ApiClient.mustache
index d533d30f901..13d3b8c5f49 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/ApiClient.mustache
@@ -23,9 +23,6 @@ using ErrorEventArgs = Newtonsoft.Json.Serialization.ErrorEventArgs;
 using RestSharp;
 using RestSharp.Deserializers;
 using RestSharpMethod = RestSharp.Method;
-{{#useWebRequest}}
-using System.Net.Http;
-{{/useWebRequest}}
 {{#supportsRetry}}
 using Polly;
 {{/supportsRetry}}
@@ -371,12 +368,15 @@ namespace {{packageName}}.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/GlobalConfiguration.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/GlobalConfiguration.mustache
index bdfa4b99cc1..93a9ab8aa2c 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/GlobalConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/GlobalConfiguration.mustache
@@ -12,7 +12,7 @@ namespace {{packageName}}.Client
     /// A customized implementation via partial class may reside in another file and may
     /// be excluded from automatic generation via a .openapi-generator-ignore file.
     /// </remarks>
-    public partial class GlobalConfiguration : Configuration
+    {{>visibility}} partial class GlobalConfiguration : Configuration
     {
         #region Private Members
 
@@ -56,4 +56,4 @@ namespace {{packageName}}.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/HttpSigningConfiguration.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/HttpSigningConfiguration.mustache
index f80e584c666..58a961b5da3 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/HttpSigningConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/HttpSigningConfiguration.mustache
@@ -741,15 +741,6 @@ namespace {{packageName}}.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/RequestOptions.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/RequestOptions.mustache
index dc924c733c1..a3f9691b8d2 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/RequestOptions.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/RequestOptions.mustache
@@ -38,7 +38,7 @@ namespace {{packageName}}.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -59,7 +59,7 @@ namespace {{packageName}}.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/RetryConfiguration.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/RetryConfiguration.mustache
index 29aa6092681..4cc953487a8 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/RetryConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/RetryConfiguration.mustache
@@ -1,3 +1,5 @@
+{{>partial_header}}
+
 using Polly;
 {{#useRestSharp}}
 using RestSharp;
@@ -11,7 +13,7 @@ namespace {{packageName}}.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
 {{#useRestSharp}}
         /// <summary>
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/api.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/api.mustache
index ce2000f63e9..c4824e8db8a 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/api.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/api.mustache
@@ -415,21 +415,21 @@ namespace {{packageName}}.{{apiPackage}}
             {{/isApiKey}}
             {{#isBasicBasic}}
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + {{packageName}}.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
             {{/isBasicBasic}}
             {{#isBasicBearer}}
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
             {{/isBasicBearer}}
             {{#isOAuth}}
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -640,14 +640,14 @@ namespace {{packageName}}.{{apiPackage}}
             {{#isBasic}}
             {{#isBasicBasic}}
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + {{packageName}}.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
             {{/isBasicBasic}}
             {{#isBasicBearer}}
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -655,7 +655,7 @@ namespace {{packageName}}.{{apiPackage}}
             {{/isBasic}}
             {{#isOAuth}}
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/api_doc.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/api_doc.mustache
index 1286829ad40..3a3870510c9 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/api_doc.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/api_doc.mustache
@@ -128,7 +128,7 @@ Name | Type | Description  | Notes
 {{/responses}}
 {{/responses.0}}
 
-[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+[[Back to top]](#) [[Back to API list]](../{{#useGenericHost}}../{{/useGenericHost}}README.md#documentation-for-api-endpoints) [[Back to Model list]](../{{#useGenericHost}}../{{/useGenericHost}}README.md#documentation-for-models) [[Back to README]](../{{#useGenericHost}}../{{/useGenericHost}}README.md)
 
 {{/operation}}
 {{/operations}}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/api_test.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/api_test.mustache
index 3f2f1de5bb3..78319978ac0 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/api_test.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/api_test.mustache
@@ -28,11 +28,15 @@ namespace {{packageName}}.Test.Api
     /// </remarks>
     public class {{classname}}Tests : IDisposable
     {
+        {{^nonPublicApi}}
         private {{classname}} instance;
 
+        {{/nonPublicApi}}
         public {{classname}}Tests()
         {
+            {{^nonPublicApi}}
             instance = new {{classname}}();
+            {{/nonPublicApi}}
         }
 
         public void Dispose()
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiException.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiException.mustache
new file mode 100644
index 00000000000..77e95ca3d14
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiException.mustache
@@ -0,0 +1,44 @@
+// <auto-generated>
+{{>partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// API Exception
+    /// </summary>
+    {{>visibility}} class ApiException : Exception
+    {
+        /// <summary>
+        /// The reason the api request failed
+        /// </summary>
+        public string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} ReasonPhrase { get; }
+
+        /// <summary>
+        /// The HttpStatusCode
+        /// </summary>
+        public System.Net.HttpStatusCode StatusCode { get; }
+
+        /// <summary>
+        /// The raw data returned by the api
+        /// </summary>
+        public string RawContent { get; }
+        
+        /// <summary>
+        /// Construct the ApiException from parts of the reponse
+        /// </summary>
+        /// <param name="reasonPhrase"></param>
+        /// <param name="statusCode"></param>
+        /// <param name="rawContent"></param>
+        public ApiException(string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} reasonPhrase, System.Net.HttpStatusCode statusCode, string rawContent) : base(reasonPhrase ?? rawContent)
+        {
+            ReasonPhrase = reasonPhrase;
+
+            StatusCode = statusCode;
+
+            RawContent = rawContent;
+        }
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiKeyToken.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiKeyToken.mustache
new file mode 100644
index 00000000000..98434c3b25a
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiKeyToken.mustache
@@ -0,0 +1,59 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// A token constructed from an apiKey.
+    /// </summary>
+    public class ApiKeyToken : TokenBase
+    {
+        private string _raw;
+
+        /// <summary>
+        /// Constructs an ApiKeyToken object.
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="prefix"></param>
+        /// <param name="timeout"></param>        
+        public ApiKeyToken(string value, string prefix = "Bearer ", TimeSpan? timeout = null) : base(timeout)
+        {
+            _raw = $"{ prefix }{ value }";
+        }
+
+        /// <summary>
+        /// Places the token in the cookie.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="cookieName"></param>
+        public virtual void UseInCookie(System.Net.Http.HttpRequestMessage request, string cookieName)
+        {
+            request.Headers.Add("Cookie", $"{ cookieName }=_raw");
+        }
+
+        /// <summary>
+        /// Places the token in the header.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="headerName"></param>
+        public virtual void UseInHeader(System.Net.Http.HttpRequestMessage request, string headerName)
+        {
+            request.Headers.Add(headerName, _raw);
+        }
+        
+        /// <summary>
+        /// Places the token in the query.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="uriBuilder"></param>
+        /// <param name="parseQueryString"></param>
+        /// <param name="parameterName"></param>
+        public virtual void UseInQuery(System.Net.Http.HttpRequestMessage request, UriBuilder uriBuilder, System.Collections.Specialized.NameValueCollection parseQueryString, string parameterName)
+        {
+            parseQueryString[parameterName] = Uri.EscapeDataString(_raw).ToString(){{#nullableReferenceTypes}}!{{/nullableReferenceTypes}};
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiResponseEventArgs.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiResponseEventArgs.mustache
new file mode 100644
index 00000000000..5ff16199326
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiResponseEventArgs.mustache
@@ -0,0 +1,47 @@
+using System;
+using System.Net;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Useful for tracking server health.
+    /// </summary>
+    public class ApiResponseEventArgs : EventArgs
+    {
+        /// <summary>
+        /// The time the request was sent.
+        /// </summary>
+        public DateTime RequestedAt { get; }
+        /// <summary>
+        /// The time the response was received.
+        /// </summary>
+        public DateTime ReceivedAt { get; }
+        /// <summary>
+        /// The HttpStatusCode received.
+        /// </summary>
+        public HttpStatusCode HttpStatus { get; }
+        /// <summary>
+        /// The path requested.
+        /// </summary>
+        public string Path { get; }
+        /// <summary>
+        /// The elapsed time from request to response.
+        /// </summary>
+        public TimeSpan ToTimeSpan => this.ReceivedAt - this.RequestedAt;
+
+        /// <summary>
+        /// The event args used to track server health.
+        /// </summary>
+        /// <param name="requestedAt"></param>
+        /// <param name="receivedAt"></param>
+        /// <param name="httpStatus"></param>
+        /// <param name="path"></param>
+        public ApiResponseEventArgs(DateTime requestedAt, DateTime receivedAt, HttpStatusCode httpStatus, string path)
+        {
+            RequestedAt = requestedAt;
+            ReceivedAt = receivedAt;
+            HttpStatus = httpStatus;
+            Path = path;
+        }
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiResponse`1.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiResponse`1.mustache
new file mode 100644
index 00000000000..ce8b308e9ca
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiResponse`1.mustache
@@ -0,0 +1,97 @@
+// <auto-generated>
+{{>partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Collections.Generic;
+using System.Net;
+using Newtonsoft.Json;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Provides a non-generic contract for the ApiResponse wrapper.
+    /// </summary>
+    public interface IApiResponse
+    {
+        /// <summary>
+        /// The data type of <see cref="Data"/>
+        /// </summary>
+        Type ResponseType { get; }
+
+        /// <summary>
+        /// Gets or sets the status code (HTTP status code)
+        /// </summary>
+        /// <value>The status code.</value>
+        HttpStatusCode StatusCode { get; }
+
+        /// <summary>
+        /// The raw content of this response
+        /// </summary>
+        string RawContent { get; }
+    }
+
+    /// <summary>
+    /// API Response
+    /// </summary>
+    {{>visibility}} partial class ApiResponse<T> : IApiResponse
+    {
+        #region Properties
+
+        /// <summary>
+        /// The deserialized content
+        /// </summary>
+        {{! .net 3.1 does not support unconstrained nullable T }}
+        public T{{#nullableReferenceTypes}}{{^netcoreapp3.1}}?{{/netcoreapp3.1}}{{/nullableReferenceTypes}} Content { get; set; }
+
+        /// <summary>
+        /// Gets or sets the status code (HTTP status code)
+        /// </summary>
+        /// <value>The status code.</value>
+        public HttpStatusCode StatusCode { get; }
+
+        /// <summary>
+        /// The content of this response
+        /// </summary>
+        public Type ResponseType
+        {
+            get { return typeof(T); }
+        }
+
+        /// <summary>
+        /// The raw data
+        /// </summary>
+        public string RawContent { get; }
+
+        /// <summary>
+        /// The IsSuccessStatusCode from the api response
+        /// </summary>
+        public bool IsSuccessStatusCode { get; }
+
+        /// <summary>
+        /// The reason phrase contained in the api response
+        /// </summary>
+        public string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} ReasonPhrase { get; }
+
+        /// <summary>
+        /// The headers contained in the api response
+        /// </summary>
+        public System.Net.Http.Headers.HttpResponseHeaders Headers { get; }
+
+        #endregion Properties
+
+        /// <summary>
+        /// Construct the reponse using an HttpResponseMessage
+        /// </summary>
+        /// <param name="response"></param>
+        /// <param name="rawContent"></param>
+        public ApiResponse(System.Net.Http.HttpResponseMessage response, string rawContent)
+        {
+            StatusCode = response.StatusCode;
+            Headers = response.Headers;
+            IsSuccessStatusCode = response.IsSuccessStatusCode;
+            ReasonPhrase = response.ReasonPhrase;
+            RawContent = rawContent;
+        }
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiTestsBase.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiTestsBase.mustache
new file mode 100644
index 00000000000..57dd3c7edee
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ApiTestsBase.mustache
@@ -0,0 +1,47 @@
+{{>partial_header}}
+using System;
+using System.Collections.Generic;
+using System.Security.Cryptography;
+using Microsoft.Extensions.Hosting;
+using {{packageName}}.Client;{{#hasImport}}
+using {{packageName}}.{{modelPackage}};{{/hasImport}}
+
+
+{{{testInstructions}}}
+
+
+namespace {{packageName}}.Test.Api
+{
+    /// <summary>
+    ///  Base class for API tests
+    /// </summary>
+    public class ApiTestsBase
+    {
+        protected readonly IHost _host;
+
+        public ApiTestsBase(string[] args)
+        {
+            _host = CreateHostBuilder(args).Build();
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args)
+            .Configure{{apiName}}((context, options) =>
+            {
+                {{#hasApiKeyMethods}}ApiKeyToken apiKeyToken = new ApiKeyToken(context.Configuration["<token>"], timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(apiKeyToken);
+                {{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+                BearerToken bearerToken = new BearerToken(context.Configuration["<token>"], timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(bearerToken);
+                {{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+                BasicToken basicToken = new BasicToken(context.Configuration["<username>"], context.Configuration["<password>"], timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(basicToken);
+                {{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+                HttpSigningConfiguration config = new HttpSigningConfiguration("<keyId>", "<keyFilePath>", null, new List<string>(), HashAlgorithmName.SHA256, "<signingAlgorithm>", 0);
+                HttpSignatureToken httpSignatureToken = new HttpSignatureToken(config, timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(httpSignatureToken);
+                {{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+                OAuthToken oauthToken = new OAuthToken(context.Configuration["<token>"], timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(oauthToken);{{/hasOAuthMethods}}
+            });
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/BasicToken.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/BasicToken.mustache
new file mode 100644
index 00000000000..78fce754c17
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/BasicToken.mustache
@@ -0,0 +1,44 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// A token constructed from a username and password.
+    /// </summary>
+    public class BasicToken : TokenBase
+    {
+        private string _username;
+
+        private string _password;
+
+        /// <summary>
+        /// Constructs a BasicToken object.
+        /// </summary>
+        /// <param name="username"></param>
+        /// <param name="password"></param>
+        /// <param name="timeout"></param>
+        public BasicToken(string username, string password, TimeSpan? timeout = null) : base(timeout)
+        {
+            _username = username;
+
+            _password = password;
+        }
+
+        /// <summary>
+        /// Places the token in the header.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="headerName"></param>
+        public virtual void UseInHeader(System.Net.Http.HttpRequestMessage request, string headerName)
+        {
+            request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", {{packageName}}.Client.ClientUtils.Base64Encode(_username + ":" + _password));
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/BearerToken.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/BearerToken.mustache
new file mode 100644
index 00000000000..0e6a8dbdf23
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/BearerToken.mustache
@@ -0,0 +1,39 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// A token constructed from a token from a bearer token.
+    /// </summary>
+    public class BearerToken : TokenBase
+    {
+        private string _raw;
+
+        /// <summary>
+        /// Constructs a BearerToken object.
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="timeout"></param>
+        public BearerToken(string value, TimeSpan? timeout = null) : base(timeout)
+        {
+            _raw = value;
+        }
+
+        /// <summary>
+        /// Places the token in the header.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="headerName"></param>
+        public virtual void UseInHeader(System.Net.Http.HttpRequestMessage request, string headerName)
+        {
+            request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _raw);
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ClientUtils.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ClientUtils.mustache
new file mode 100644
index 00000000000..b3b398425e4
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/ClientUtils.mustache
@@ -0,0 +1,360 @@
+{{>partial_header}}
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.DependencyInjection;{{#supportsRetry}}
+using Polly.Timeout;
+using Polly.Extensions.Http;
+using Polly;{{/supportsRetry}}
+using System.Net.Http;
+using {{packageName}}.Api;{{#useCompareNetObjects}}
+using KellermanSoftware.CompareNetObjects;{{/useCompareNetObjects}}
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Utility functions providing some benefit to API client consumers.
+    /// </summary>
+    public static class ClientUtils
+    {
+        {{#useCompareNetObjects}}
+        /// <summary>
+        /// An instance of CompareLogic.
+        /// </summary>
+        public static CompareLogic compareLogic;
+
+        /// <summary>
+        /// Static constructor to initialise compareLogic.
+        /// </summary>
+        static ClientUtils()
+        {
+            compareLogic = new CompareLogic();
+        }
+        {{/useCompareNetObjects}}
+
+        /// <summary>
+        /// A delegate for events.
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        /// <returns></returns>
+        public delegate void EventHandler<T>(object sender, T e) where T : EventArgs;
+
+        /// <summary>
+        ///  Custom JSON serializer
+        /// </summary>
+        public static Newtonsoft.Json.JsonSerializerSettings JsonSerializerSettings { get; set; } = new Newtonsoft.Json.JsonSerializerSettings
+        {
+            // OpenAPI generated types generally hide default constructors.
+            ConstructorHandling = Newtonsoft.Json.ConstructorHandling.AllowNonPublicDefaultConstructor,
+            MissingMemberHandling = Newtonsoft.Json.MissingMemberHandling.Ignore,
+            ContractResolver = new Newtonsoft.Json.Serialization.DefaultContractResolver
+            {
+                NamingStrategy = new Newtonsoft.Json.Serialization.CamelCaseNamingStrategy
+                {
+                    OverrideSpecifiedNames = false
+                }
+            }
+        };
+
+        /// <summary>
+        /// Sanitize filename by removing the path
+        /// </summary>
+        /// <param name="filename">Filename</param>
+        /// <returns>Filename</returns>
+        public static string SanitizeFilename(string filename)
+        {
+            Match match = Regex.Match(filename, @".*[/\\](.*)$");
+            return match.Success ? match.Groups[1].Value : filename;
+        }
+
+        /// <summary>
+        /// If parameter is DateTime, output in a formatted string (default ISO 8601), customizable with Configuration.DateTime.
+        /// If parameter is a list, join the list with ",".
+        /// Otherwise just return the string.
+        /// </summary>
+        /// <param name="obj">The parameter (header, path, query, form).</param>
+        /// <param name="format">The DateTime serialization format.</param>
+        /// <returns>Formatted string.</returns>
+        public static string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} ParameterToString(object obj, string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} format = ISO8601_DATETIME_FORMAT)
+        {
+            if (obj is DateTime dateTime)
+                // Return a formatted date string - Can be customized with Configuration.DateTimeFormat
+                // Defaults to an ISO 8601, using the known as a Round-trip date/time pattern ("o")
+                // https://msdn.microsoft.com/en-us/library/az4se3k1(v=vs.110).aspx#Anchor_8
+                // For example: 2009-06-15T13:45:30.0000000
+                return dateTime.ToString(format);
+            if (obj is DateTimeOffset dateTimeOffset)
+                // Return a formatted date string - Can be customized with Configuration.DateTimeFormat
+                // Defaults to an ISO 8601, using the known as a Round-trip date/time pattern ("o")
+                // https://msdn.microsoft.com/en-us/library/az4se3k1(v=vs.110).aspx#Anchor_8
+                // For example: 2009-06-15T13:45:30.0000000
+                return dateTimeOffset.ToString(format);
+            if (obj is bool boolean)
+                return boolean ? "true" : "false";
+            if (obj is System.Collections.ICollection collection)
+                return string.Join(",", collection.Cast<object>());
+
+            return Convert.ToString(obj, System.Globalization.CultureInfo.InvariantCulture);
+        }
+
+        /// <summary>
+        /// URL encode a string
+        /// Credit/Ref: https://github.com/restsharp/RestSharp/blob/master/RestSharp/Extensions/StringExtensions.cs#L50
+        /// </summary>
+        /// <param name="input">string to be URL encoded</param>
+        /// <returns>Byte array</returns>
+        public static string UrlEncode(string input)
+        {
+            const int maxLength = 32766;
+
+            if (input == null)
+            {
+                throw new ArgumentNullException("input");
+            }
+
+            if (input.Length <= maxLength)
+            {
+                return Uri.EscapeDataString(input);
+            }
+
+            StringBuilder sb = new StringBuilder(input.Length * 2);
+            int index = 0;
+
+            while (index < input.Length)
+            {
+                int length = Math.Min(input.Length - index, maxLength);
+                string subString = input.Substring(index, length);
+
+                sb.Append(Uri.EscapeDataString(subString));
+                index += subString.Length;
+            }
+
+            return sb.ToString();
+        }
+
+        /// <summary>
+        /// Encode string in base64 format.
+        /// </summary>
+        /// <param name="text">string to be encoded.</param>
+        /// <returns>Encoded string.</returns>
+        public static string Base64Encode(string text)
+        {
+            return Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(text));
+        }
+
+        /// <summary>
+        /// Convert stream to byte array
+        /// </summary>
+        /// <param name="inputStream">Input stream to be converted</param>
+        /// <returns>Byte array</returns>
+        public static byte[] ReadAsBytes(Stream inputStream)
+        {
+            using (var ms = new MemoryStream())
+            {
+                inputStream.CopyTo(ms);
+                return ms.ToArray();
+            }
+        }
+
+        /// <summary>
+        /// Select the Content-Type header's value from the given content-type array:
+        /// if JSON type exists in the given array, use it;
+        /// otherwise use the first one defined in 'consumes'
+        /// </summary>
+        /// <param name="contentTypes">The Content-Type array to select from.</param>
+        /// <returns>The Content-Type header to use.</returns>
+        public static string SelectHeaderContentType(string[] contentTypes)
+        {
+            if (contentTypes.Length == 0)
+                return null;
+
+            foreach (var contentType in contentTypes)
+            {
+                if (IsJsonMime(contentType))
+                    return contentType;
+            }
+
+            return contentTypes[0]; // use the first content type specified in 'consumes'
+        }
+
+        /// <summary>
+        /// Select the Accept header's value from the given accepts array:
+        /// if JSON exists in the given array, use it;
+        /// otherwise use all of them (joining into a string)
+        /// </summary>
+        /// <param name="accepts">The accepts array to select from.</param>
+        /// <returns>The Accept header to use.</returns>
+        public static string SelectHeaderAccept(string[] accepts)
+        {
+            if (accepts.Length == 0)
+                return null;
+
+            if (accepts.Contains("application/json", StringComparer.OrdinalIgnoreCase))
+                return "application/json";
+
+            return string.Join(",", accepts);
+        }
+
+        /// <summary>
+        /// Provides a case-insensitive check that a provided content type is a known JSON-like content type.
+        /// </summary>
+        public static readonly Regex JsonRegex = new Regex("(?i)^(application/json|[^;/ \t]+/[^;/ \t]+[+]json)[ \t]*(;.*)?$");
+
+        /// <summary>
+        /// Check if the given MIME is a JSON MIME.
+        /// JSON MIME examples:
+        ///    application/json
+        ///    application/json; charset=UTF8
+        ///    APPLICATION/JSON
+        ///    application/vnd.company+json
+        /// </summary>
+        /// <param name="mime">MIME</param>
+        /// <returns>Returns True if MIME type is json.</returns>
+        public static bool IsJsonMime(string mime)
+        {
+            if (string.IsNullOrWhiteSpace(mime)) return false;
+
+            return JsonRegex.IsMatch(mime) || mime.Equals("application/json-patch+json");
+        }
+
+        /// <summary>
+        /// The base path of the API
+        /// </summary>
+        public const string BASE_ADDRESS = "{{{basePath}}}";
+
+        /// <summary>
+        /// The scheme of the API
+        /// </summary>
+        public const string SCHEME = "{{{scheme}}}";
+
+        /// <summary>
+        /// The context path of the API
+        /// </summary>
+        public const string CONTEXT_PATH = "{{contextPath}}";
+
+        /// <summary>
+        /// The host of the API
+        /// </summary>
+        public const string HOST = "{{{host}}}";
+
+        /// <summary>
+        /// The format to use for DateTime serialization
+        /// </summary>
+        public const string ISO8601_DATETIME_FORMAT = "o";
+
+        /// <summary>
+        /// Add the api to your host builder.
+        /// </summary>
+        /// <param name="builder"></param>
+        /// <param name="options"></param>
+        public static IHostBuilder Configure{{apiName}}(this IHostBuilder builder, Action<HostBuilderContext, HostConfiguration> options)
+        {
+            builder.ConfigureServices((context, services) => 
+            {
+                HostConfiguration config = new HostConfiguration(services);
+
+                options(context, config);
+
+                Add{{apiName}}(services, config);
+            });
+
+            return builder;
+        }
+
+        /// <summary>
+        /// Add the api to your host builder.
+        /// </summary>
+        /// <param name="services"></param>
+        /// <param name="options"></param>
+        public static void Add{{apiName}}(this IServiceCollection services, Action<HostConfiguration> options)
+        {
+            HostConfiguration config = new HostConfiguration(services);
+            options(config);
+            Add{{apiName}}(services, config);
+        }
+
+        private static void Add{{apiName}}(IServiceCollection services, HostConfiguration host)
+        {
+            if (!host.HttpClientsAdded)
+                host.Add{{apiName}}HttpClients();
+
+            // ensure that a token provider was provided for this token type
+            // if not, default to RateLimitProvider
+            var containerServices = services.Where(s => s.ServiceType.IsGenericType &&
+                s.ServiceType.GetGenericTypeDefinition().IsAssignableFrom(typeof(TokenContainer<>))).ToArray();
+
+            foreach(var containerService in containerServices)
+            {
+                var tokenType = containerService.ServiceType.GenericTypeArguments[0];
+
+                var provider = services.FirstOrDefault(s => s.ServiceType.IsAssignableFrom(typeof(TokenProvider<>).MakeGenericType(tokenType)));
+
+                if (provider == null)
+                {
+                    services.AddSingleton(typeof(RateLimitProvider<>).MakeGenericType(tokenType));
+                    services.AddSingleton(typeof(TokenProvider<>).MakeGenericType(tokenType), 
+                        s => s.GetRequiredService(typeof(RateLimitProvider<>).MakeGenericType(tokenType)));
+                }
+            }
+        }{{#supportsRetry}}
+
+        /// <summary>
+        /// Adds a Polly retry policy to your clients.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="retries"></param>
+        /// <returns></returns>
+        public static IHttpClientBuilder AddRetryPolicy(this IHttpClientBuilder client, int retries)
+        {
+            client.AddPolicyHandler(RetryPolicy(retries));
+
+            return client;
+        }
+
+        /// <summary>
+        /// Adds a Polly timeout policy to your clients.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="timeout"></param>
+        /// <returns></returns>
+        public static IHttpClientBuilder AddTimeoutPolicy(this IHttpClientBuilder client, TimeSpan timeout)
+        {
+            client.AddPolicyHandler(TimeoutPolicy(timeout));
+
+            return client;
+        }
+
+        /// <summary>
+        /// Adds a Polly circiut breaker to your clients.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="handledEventsAllowedBeforeBreaking"></param>
+        /// <param name="durationOfBreak"></param>
+        /// <returns></returns>
+        public static IHttpClientBuilder AddCircuitBreakerPolicy(this IHttpClientBuilder client, int handledEventsAllowedBeforeBreaking, TimeSpan durationOfBreak)
+        {
+            client.AddTransientHttpErrorPolicy(builder => CircuitBreakerPolicy(builder, handledEventsAllowedBeforeBreaking, durationOfBreak));
+
+            return client;
+        }
+
+        private static Polly.Retry.AsyncRetryPolicy<HttpResponseMessage> RetryPolicy(int retries)
+            => HttpPolicyExtensions
+                .HandleTransientHttpError()
+                .Or<TimeoutRejectedException>()
+                .RetryAsync(retries);
+
+        private static AsyncTimeoutPolicy<HttpResponseMessage> TimeoutPolicy(TimeSpan timeout)
+            => Policy.TimeoutAsync<HttpResponseMessage>(timeout);
+
+        private static Polly.CircuitBreaker.AsyncCircuitBreakerPolicy<HttpResponseMessage> CircuitBreakerPolicy(
+            PolicyBuilder<HttpResponseMessage> builder, int handledEventsAllowedBeforeBreaking, TimeSpan durationOfBreak)
+                => builder.CircuitBreakerAsync(handledEventsAllowedBeforeBreaking, durationOfBreak);{{/supportsRetry}}
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/DependencyInjectionTests.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/DependencyInjectionTests.mustache
new file mode 100644
index 00000000000..ac4a4d8e2d1
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/DependencyInjectionTests.mustache
@@ -0,0 +1,158 @@
+{{>partial_header}}
+using System;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.DependencyInjection;
+using System.Collections.Generic;
+using System.Security.Cryptography;
+using {{packageName}}.Client;
+using {{packageName}}.{{apiPackage}};
+using Xunit;
+
+namespace {{packageName}}.Test.Api
+{
+    /// <summary>
+    ///  Tests the dependency injection.
+    /// </summary>
+    public class DependencyInjectionTest
+    {
+        private readonly IHost _hostUsingConfigureWithoutAClient = 
+            Host.CreateDefaultBuilder(Array.Empty<string>()).Configure{{apiName}}((context, options) =>
+            {
+                {{#hasApiKeyMethods}}ApiKeyToken apiKeyToken = new ApiKeyToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(apiKeyToken);
+                {{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+                BearerToken bearerToken = new BearerToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(bearerToken);
+                {{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+                BasicToken basicToken = new BasicToken("<username>", "<password>", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(basicToken);
+                {{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+                HttpSigningConfiguration config = new HttpSigningConfiguration("<keyId>", "<keyFilePath>", null, new List<string>(), HashAlgorithmName.SHA256, "<signingAlgorithm>", 0);
+                HttpSignatureToken httpSignatureToken = new HttpSignatureToken(config, timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(httpSignatureToken);
+                {{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+                OAuthToken oauthToken = new OAuthToken("token", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(oauthToken);{{/hasOAuthMethods}}
+            })
+            .Build();
+
+        private readonly IHost _hostUsingConfigureWithAClient =
+            Host.CreateDefaultBuilder(Array.Empty<string>()).Configure{{apiName}}((context, options) =>
+            {
+                {{#hasApiKeyMethods}}ApiKeyToken apiKeyToken = new ApiKeyToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(apiKeyToken);
+                {{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+                BearerToken bearerToken = new BearerToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(bearerToken);
+                {{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+                BasicToken basicToken = new BasicToken("<username>", "<password>", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(basicToken);
+                {{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+                HttpSigningConfiguration config = new HttpSigningConfiguration("<keyId>", "<keyFilePath>", null, new List<string>(), HashAlgorithmName.SHA256, "<signingAlgorithm>", 0);
+                HttpSignatureToken httpSignatureToken = new HttpSignatureToken(config, timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(httpSignatureToken);
+                {{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+                OAuthToken oauthToken = new OAuthToken("token", timeout: TimeSpan.FromSeconds(1));
+                options.AddTokens(oauthToken);{{/hasOAuthMethods}}
+                options.Add{{apiName}}HttpClients(client => client.BaseAddress = new Uri(ClientUtils.BASE_ADDRESS));
+            })
+            .Build();
+
+        private readonly IHost _hostUsingAddWithoutAClient =
+            Host.CreateDefaultBuilder(Array.Empty<string>()).ConfigureServices((host, services) =>
+            {
+                services.Add{{apiName}}(options =>
+                {
+                    {{#hasApiKeyMethods}}ApiKeyToken apiKeyToken = new ApiKeyToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(apiKeyToken);
+                    {{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+                    BearerToken bearerToken = new BearerToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(bearerToken);
+                    {{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+                    BasicToken basicToken = new BasicToken("<username>", "<password>", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(basicToken);
+                    {{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+                    HttpSigningConfiguration config = new HttpSigningConfiguration("<keyId>", "<keyFilePath>", null, new List<string>(), HashAlgorithmName.SHA256, "<signingAlgorithm>", 0);
+                    HttpSignatureToken httpSignatureToken = new HttpSignatureToken(config, timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(httpSignatureToken);
+                    {{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+                    OAuthToken oauthToken = new OAuthToken("token", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(oauthToken);{{/hasOAuthMethods}}
+                });
+            })
+            .Build();
+
+        private readonly IHost _hostUsingAddWithAClient =
+            Host.CreateDefaultBuilder(Array.Empty<string>()).ConfigureServices((host, services) =>
+            {
+                services.Add{{apiName}}(options =>
+                {
+                    {{#hasApiKeyMethods}}ApiKeyToken apiKeyToken = new ApiKeyToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(apiKeyToken);
+                    {{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+                    BearerToken bearerToken = new BearerToken($"<token>", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(bearerToken);
+                    {{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+                    BasicToken basicToken = new BasicToken("<username>", "<password>", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(basicToken);
+                    {{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+                    HttpSigningConfiguration config = new HttpSigningConfiguration("<keyId>", "<keyFilePath>", null, new List<string>(), HashAlgorithmName.SHA256, "<signingAlgorithm>", 0);
+                    HttpSignatureToken httpSignatureToken = new HttpSignatureToken(config, timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(httpSignatureToken);
+                    {{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+                    OAuthToken oauthToken = new OAuthToken("token", timeout: TimeSpan.FromSeconds(1));
+                    options.AddTokens(oauthToken);{{/hasOAuthMethods}}
+                    options.Add{{apiName}}HttpClients(client => client.BaseAddress = new Uri(ClientUtils.BASE_ADDRESS));
+                });
+            })
+            .Build();
+
+        /// <summary>
+        /// Test dependency injection when using the configure method
+        /// </summary>
+        [Fact]
+        public void ConfigureApiWithAClientTest()
+        {
+            {{#apiInfo}}{{#apis}}var {{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}} = _hostUsingConfigureWithAClient.Services.GetRequiredService<{{interfacePrefix}}{{classname}}>();
+            Assert.True({{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}}.HttpClient.BaseAddress != null);{{^-last}}
+            
+            {{/-last}}{{/apis}}{{/apiInfo}}
+        }
+
+        /// <summary>
+        /// Test dependency injection when using the configure method
+        /// </summary>
+        [Fact]
+        public void ConfigureApiWithoutAClientTest()
+        {
+            {{#apiInfo}}{{#apis}}var {{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}} = _hostUsingConfigureWithoutAClient.Services.GetRequiredService<{{interfacePrefix}}{{classname}}>();
+            Assert.True({{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}}.HttpClient.BaseAddress != null);{{^-last}}
+            
+            {{/-last}}{{/apis}}{{/apiInfo}}
+        }
+
+        /// <summary>
+        /// Test dependency injection when using the add method
+        /// </summary>
+        [Fact]
+        public void AddApiWithAClientTest()
+        {
+            {{#apiInfo}}{{#apis}}var {{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}} = _hostUsingAddWithAClient.Services.GetRequiredService<{{interfacePrefix}}{{classname}}>();
+            Assert.True({{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}}.HttpClient.BaseAddress != null);{{^-last}}
+            
+            {{/-last}}{{/apis}}{{/apiInfo}}
+        }
+
+        /// <summary>
+        /// Test dependency injection when using the add method
+        /// </summary>
+        [Fact]
+        public void AddApiWithoutAClientTest()
+        {
+            {{#apiInfo}}{{#apis}}var {{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}} = _hostUsingAddWithoutAClient.Services.GetRequiredService<{{interfacePrefix}}{{classname}}>();
+            Assert.True({{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}}.HttpClient.BaseAddress != null);{{^-last}}
+            
+            {{/-last}}{{/apis}}{{/apiInfo}}
+        }
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HostConfiguration.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HostConfiguration.mustache
new file mode 100644
index 00000000000..24530537f96
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HostConfiguration.mustache
@@ -0,0 +1,124 @@
+{{>partial_header}}
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http;
+using Microsoft.Extensions.DependencyInjection;
+using {{packageName}}.Api;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Provides hosting configuration for {{packageName}}
+    /// </summary>
+    public class HostConfiguration
+    {
+        private readonly IServiceCollection _services;
+        internal bool HttpClientsAdded { get; private set; }
+
+        /// <summary>
+        /// Instantiates the class 
+        /// </summary>
+        /// <param name="services"></param>
+        public HostConfiguration(IServiceCollection services)
+        {
+            _services = services;{{#apiInfo}}{{#apis}}
+            services.AddSingleton<{{interfacePrefix}}{{classname}}, {{classname}}>();{{/apis}}{{/apiInfo}}
+        }
+
+        /// <summary>
+        /// Configures the HttpClients.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="builder"></param>
+        /// <returns></returns>
+        public HostConfiguration Add{{apiName}}HttpClients<{{#apiInfo}}{{#apis}}T{{classname}}{{^-last}}, {{/-last}}{{/apis}}>
+        (
+            Action<HttpClient>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} client = null, Action<IHttpClientBuilder>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} builder = null){{#apis}}
+            where T{{classname}} : class, {{interfacePrefix}}{{classname}}{{/apis}}
+        {
+            if (client == null)
+                client = c => c.BaseAddress = new Uri(ClientUtils.BASE_ADDRESS);
+
+            List<IHttpClientBuilder> builders = new List<IHttpClientBuilder>();
+            
+            {{#apis}}builders.Add(_services.AddHttpClient<{{interfacePrefix}}{{classname}}, T{{classname}}>(client));
+            {{/apis}}{{/apiInfo}}
+            if (builder != null)
+                foreach (IHttpClientBuilder instance in builders)
+                    builder(instance);
+
+            HttpClientsAdded = true;
+
+            return this;
+        }
+
+        /// <summary>
+        /// Configures the HttpClients.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="builder"></param>
+        /// <returns></returns>
+        public HostConfiguration Add{{apiName}}HttpClients(
+            Action<HttpClient>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} client = null, Action<IHttpClientBuilder>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} builder = null)
+        {
+            Add{{apiName}}HttpClients<{{#apiInfo}}{{#apis}}{{classname}}{{^-last}}, {{/-last}}{{/apis}}{{/apiInfo}}>(client, builder);
+
+            return this;
+        }
+
+        /// <summary>
+        /// Configures the JsonSerializerSettings
+        /// </summary>
+        /// <param name="options"></param>
+        /// <returns></returns>
+        public HostConfiguration ConfigureJsonOptions(Action<Newtonsoft.Json.JsonSerializerSettings> options)
+        {
+            options(Client.ClientUtils.JsonSerializerSettings);
+
+            return this;
+        }
+
+        /// <summary>
+        /// Adds tokens to your IServiceCollection
+        /// </summary>
+        /// <typeparam name="TTokenBase"></typeparam>
+        /// <param name="token"></param>
+        /// <returns></returns>
+        public HostConfiguration AddTokens<TTokenBase>(TTokenBase token) where TTokenBase : TokenBase
+        {
+            return AddTokens(new TTokenBase[]{ token });
+        }
+
+        /// <summary>
+        /// Adds tokens to your IServiceCollection
+        /// </summary>
+        /// <typeparam name="TTokenBase"></typeparam>
+        /// <param name="tokens"></param>
+        /// <returns></returns>
+        public HostConfiguration AddTokens<TTokenBase>(IEnumerable<TTokenBase> tokens) where TTokenBase : TokenBase
+        {
+            TokenContainer<TTokenBase> container = new TokenContainer<TTokenBase>(tokens);
+            _services.AddSingleton(services => container);
+
+            return this;
+        }
+
+        /// <summary>
+        /// Adds a token provider to your IServiceCollection
+        /// </summary>
+        /// <typeparam name="TTokenProvider"></typeparam>
+        /// <typeparam name="TTokenBase"></typeparam>
+        /// <returns></returns>
+        public HostConfiguration UseProvider<TTokenProvider, TTokenBase>() 
+            where TTokenProvider : TokenProvider<TTokenBase>
+            where TTokenBase : TokenBase
+        {
+            _services.AddSingleton<TTokenProvider>();
+            _services.AddSingleton<TokenProvider<TTokenBase>>(services => services.GetRequiredService<TTokenProvider>());
+
+            return this;
+        }
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HttpSigningConfiguration.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HttpSigningConfiguration.mustache
new file mode 100644
index 00000000000..23b2d9149a1
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HttpSigningConfiguration.mustache
@@ -0,0 +1,676 @@
+// <auto-generated>
+{{>partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Security;
+using System.Security.Cryptography;
+using System.Text;
+using System.Web;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Class for HttpSigning auth related parameter and methods
+    /// </summary>
+    public class HttpSigningConfiguration
+    {
+        #region
+        /// <summary>
+        /// Create an instance
+        /// </summary>
+        public HttpSigningConfiguration(string keyId, string keyFilePath, SecureString{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} keyPassPhrase, List<string> httpSigningHeader, HashAlgorithmName hashAlgorithm, string signingAlgorithm, int signatureValidityPeriod)
+        {
+            KeyId = keyId;
+            KeyFilePath = keyFilePath;
+            KeyPassPhrase = keyPassPhrase;
+            HttpSigningHeader = httpSigningHeader;
+            HashAlgorithm = hashAlgorithm;
+            SigningAlgorithm = signingAlgorithm;
+            SignatureValidityPeriod = signatureValidityPeriod;
+        }
+        #endregion
+
+        #region Properties
+        /// <summary>
+        ///Gets the Api keyId
+        /// </summary>
+        public string KeyId { get; set; }
+
+        /// <summary>
+        /// Gets the Key file path
+        /// </summary>
+        public string KeyFilePath { get; set; }
+
+        /// <summary>
+        /// Gets the key pass phrase for password protected key
+        /// </summary>
+        public SecureString{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} KeyPassPhrase { get; set; }
+
+        /// <summary>
+        /// Gets the HTTP signing header
+        /// </summary>
+        public List<string> HttpSigningHeader { get; set; }
+
+        /// <summary>
+        /// Gets the hash algorithm sha256 or sha512
+        /// </summary>
+        public HashAlgorithmName HashAlgorithm { get; set; } = HashAlgorithmName.SHA256;
+
+        /// <summary>
+        /// Gets the signing algorithm
+        /// </summary>
+        public string SigningAlgorithm { get; set; }
+
+        /// <summary>
+        /// Gets the Signature validaty period in seconds
+        /// </summary>
+        public int SignatureValidityPeriod { get; set; }
+
+        #endregion
+
+        #region enum
+        private enum PrivateKeyType
+        {
+            None = 0,
+            RSA = 1,
+            ECDSA = 2,
+        }
+        #endregion
+
+        #region Methods
+        /// <summary>
+        /// Gets the Headers for HttpSigning
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="requestBody"></param>
+        /// <param name="cancellationToken"></param>
+        internal Dictionary<string, string> GetHttpSignedHeader(System.Net.Http.HttpRequestMessage request, string requestBody, System.Threading.CancellationToken? cancellationToken = null)
+        {
+            if (request.RequestUri == null)
+                throw new NullReferenceException("The request URI was null");
+
+            const string HEADER_REQUEST_TARGET = "(request-target)";
+
+            // The time when the HTTP signature expires. The API server should reject HTTP requests that have expired.
+            const string HEADER_EXPIRES = "(expires)";
+
+            //The 'Date' header.
+            const string HEADER_DATE = "Date";
+
+            //The 'Host' header.
+            const string HEADER_HOST = "Host";
+            
+            //The time when the HTTP signature was generated.
+            const string HEADER_CREATED = "(created)";
+            
+            //When the 'Digest' header is included in the HTTP signature, the client automatically
+            //computes the digest of the HTTP request body, per RFC 3230.
+            const string HEADER_DIGEST = "Digest";
+            
+            //The 'Authorization' header is automatically generated by the client. It includes
+            //the list of signed headers and a base64-encoded signature.
+            const string HEADER_AUTHORIZATION = "Authorization";
+
+            //Hash table to store singed headers
+            var HttpSignedRequestHeader = new Dictionary<string, string>();
+            
+            var httpSignatureHeader = new Dictionary<string, string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>();
+
+            if (HttpSigningHeader.Count == 0)
+                HttpSigningHeader.Add("(created)");
+
+            var dateTime = DateTime.Now;
+            string digest = String.Empty;
+
+            if (HashAlgorithm == HashAlgorithmName.SHA256)
+            {
+                var bodyDigest = GetStringHash(HashAlgorithm.ToString(), requestBody);
+                digest = string.Format("SHA-256={0}", Convert.ToBase64String(bodyDigest));
+            }
+            else if (HashAlgorithm == HashAlgorithmName.SHA512)
+            {
+                var bodyDigest = GetStringHash(HashAlgorithm.ToString(), requestBody);
+                digest = string.Format("SHA-512={0}", Convert.ToBase64String(bodyDigest));
+            }
+            else
+                throw new Exception(string.Format("{0} not supported", HashAlgorithm));
+
+            foreach (var header in HttpSigningHeader)
+                if (header.Equals(HEADER_REQUEST_TARGET))
+                    httpSignatureHeader.Add(header.ToLower(), request.RequestUri.ToString());
+                else if (header.Equals(HEADER_EXPIRES))
+                {
+                    var expireDateTime = dateTime.AddSeconds(SignatureValidityPeriod);
+                    httpSignatureHeader.Add(header.ToLower(), GetUnixTime(expireDateTime).ToString());
+                }
+                else if (header.Equals(HEADER_DATE))
+                {
+                    var utcDateTime = dateTime.ToString("r").ToString();
+                    httpSignatureHeader.Add(header.ToLower(), utcDateTime);
+                    HttpSignedRequestHeader.Add(HEADER_DATE, utcDateTime);
+                }
+                else if (header.Equals(HEADER_HOST))
+                {
+                    httpSignatureHeader.Add(header.ToLower(), request.RequestUri.ToString());
+                    HttpSignedRequestHeader.Add(HEADER_HOST, request.RequestUri.ToString());
+                }
+                else if (header.Equals(HEADER_CREATED))
+                    httpSignatureHeader.Add(header.ToLower(), GetUnixTime(dateTime).ToString());
+                else if (header.Equals(HEADER_DIGEST))
+                {
+                    HttpSignedRequestHeader.Add(HEADER_DIGEST, digest);
+                    httpSignatureHeader.Add(header.ToLower(), digest);
+                }
+                else
+                {
+                    bool isHeaderFound = false;
+                    foreach (var item in request.Headers)
+                    {
+                        if (string.Equals(item.Key, header, StringComparison.OrdinalIgnoreCase))
+                        {
+                            httpSignatureHeader.Add(header.ToLower(), item.Value.ToString());
+                            isHeaderFound = true;
+                            break;
+                        }
+                    }
+
+                    if (!isHeaderFound)
+                        throw new Exception(string.Format("Cannot sign HTTP request.Request does not contain the {0} header.",header));
+                }
+
+            var headersKeysString = String.Join(" ", httpSignatureHeader.Keys);
+            var headerValuesList = new List<string>();
+
+            foreach (var keyVal in httpSignatureHeader)
+                headerValuesList.Add(string.Format("{0}: {1}", keyVal.Key, keyVal.Value));
+
+            //Concatinate headers value separated by new line
+            var headerValuesString = string.Join("\n", headerValuesList);
+            var signatureStringHash = GetStringHash(HashAlgorithm.ToString(), headerValuesString);
+            string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} headerSignatureStr = null;
+            var keyType = GetKeyType(KeyFilePath);
+
+            if (keyType == PrivateKeyType.RSA)
+                headerSignatureStr = GetRSASignature(signatureStringHash);
+            
+            else if (keyType == PrivateKeyType.ECDSA)
+                headerSignatureStr = GetECDSASignature(signatureStringHash);
+            
+            var cryptographicScheme = "hs2019";
+            var authorizationHeaderValue = string.Format("Signature keyId=\"{0}\",algorithm=\"{1}\"",
+                KeyId, cryptographicScheme);
+
+            if (httpSignatureHeader.ContainsKey(HEADER_CREATED))
+                authorizationHeaderValue += string.Format(",created={0}", httpSignatureHeader[HEADER_CREATED]);
+
+            if (httpSignatureHeader.ContainsKey(HEADER_EXPIRES))
+                authorizationHeaderValue += string.Format(",expires={0}", httpSignatureHeader[HEADER_EXPIRES]);
+
+            authorizationHeaderValue += string.Format(",headers=\"{0}\",signature=\"{1}\"", headersKeysString, headerSignatureStr);
+
+            HttpSignedRequestHeader.Add(HEADER_AUTHORIZATION, authorizationHeaderValue);
+
+            return HttpSignedRequestHeader;
+        }
+
+        private byte[] GetStringHash(string hashName, string stringToBeHashed)
+        {
+            var hashAlgorithm = System.Security.Cryptography.HashAlgorithm.Create(hashName);
+
+            if (hashAlgorithm == null)
+                throw new NullReferenceException($"{ nameof(hashAlgorithm) } was null.");
+
+            var bytes = Encoding.UTF8.GetBytes(stringToBeHashed);
+            var stringHash = hashAlgorithm.ComputeHash(bytes);
+            return stringHash;
+        }
+
+        private int GetUnixTime(DateTime date2)
+        {
+            DateTime date1 = new DateTime(1970, 01, 01);
+            TimeSpan timeSpan = date2 - date1;
+            return (int)timeSpan.TotalSeconds;
+        }
+
+        private string GetRSASignature(byte[] stringToSign)
+        {
+            if (KeyPassPhrase == null)
+                throw new NullReferenceException($"{ nameof(KeyPassPhrase) } was null.");
+
+            RSA{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} rsa = GetRSAProviderFromPemFile(KeyFilePath, KeyPassPhrase);
+            
+            if (rsa == null)
+                return string.Empty;
+            else if (SigningAlgorithm == "RSASSA-PSS")
+            {
+                var signedbytes = rsa.SignHash(stringToSign, HashAlgorithm, RSASignaturePadding.Pss);
+                return Convert.ToBase64String(signedbytes);
+            }
+            else if (SigningAlgorithm == "PKCS1-v15")
+            {
+                var signedbytes = rsa.SignHash(stringToSign, HashAlgorithm, RSASignaturePadding.Pkcs1);
+                return Convert.ToBase64String(signedbytes);
+            }
+
+            return string.Empty;
+        }
+
+        /// <summary>
+        /// Gets the ECDSA signature
+        /// </summary>
+        /// <param name="dataToSign"></param>
+        /// <returns></returns>
+        private string GetECDSASignature(byte[] dataToSign)
+        {
+            if (!File.Exists(KeyFilePath))
+            {
+                throw new Exception("key file path does not exist.");
+            }
+
+            var ecKeyHeader = "-----BEGIN EC PRIVATE KEY-----";
+            var ecKeyFooter = "-----END EC PRIVATE KEY-----";
+            var keyStr = File.ReadAllText(KeyFilePath);
+            var ecKeyBase64String = keyStr.Replace(ecKeyHeader, "").Replace(ecKeyFooter, "").Trim();
+            var keyBytes = System.Convert.FromBase64String(ecKeyBase64String);
+            var ecdsa = ECDsa.Create();
+
+#if (NETCOREAPP3_0 || NETCOREAPP3_1 || NET5_0)
+            var byteCount = 0;
+            if (KeyPassPhrase != null)
+            {
+                IntPtr unmanagedString = IntPtr.Zero;
+                try
+                {
+                    // convert secure string to byte array
+                    unmanagedString = Marshal.SecureStringToGlobalAllocUnicode(KeyPassPhrase);
+
+                    string ptrToStringUni = Marshal.PtrToStringUni(unmanagedString) ?? throw new NullReferenceException();
+
+                    ecdsa.ImportEncryptedPkcs8PrivateKey(Encoding.UTF8.GetBytes(ptrToStringUni), keyBytes, out byteCount);
+                }
+                finally
+                {
+                    if (unmanagedString != IntPtr.Zero)
+                        Marshal.ZeroFreeBSTR(unmanagedString);
+                }
+            }
+            else
+            {
+                ecdsa.ImportPkcs8PrivateKey(keyBytes, out byteCount);
+            }
+            var signedBytes = ecdsa.SignHash(dataToSign);
+            var derBytes = ConvertToECDSAANS1Format(signedBytes);
+            var signedString = System.Convert.ToBase64String(derBytes);
+
+            return signedString;
+#else
+            throw new Exception("ECDSA signing is supported only on NETCOREAPP3_0 and above");
+#endif
+
+        }
+
+        private  byte[] ConvertToECDSAANS1Format(byte[] signedBytes)
+        {
+            var derBytes = new List<byte>();
+            byte derLength = 68; //default lenght for ECDSA code signinged bit 0x44
+            byte rbytesLength = 32; //R length 0x20
+            byte sbytesLength = 32; //S length 0x20
+            var rBytes = new List<byte>();
+            var sBytes = new List<byte>();
+            for (int i = 0; i < 32; i++)
+                rBytes.Add(signedBytes[i]);
+            
+            for (int i = 32; i < 64; i++)
+                sBytes.Add(signedBytes[i]);
+
+            if (rBytes[0] > 0x7F)
+            {
+                derLength++;
+                rbytesLength++;
+                var tempBytes = new List<byte>();
+                tempBytes.AddRange(rBytes);
+                rBytes.Clear();
+                rBytes.Add(0x00);
+                rBytes.AddRange(tempBytes);
+            }
+
+            if (sBytes[0] > 0x7F)
+            {
+                derLength++;
+                sbytesLength++;
+                var tempBytes = new List<byte>();
+                tempBytes.AddRange(sBytes);
+                sBytes.Clear();
+                sBytes.Add(0x00);
+                sBytes.AddRange(tempBytes);
+
+            }
+
+            derBytes.Add(48);  //start of the sequence 0x30
+            derBytes.Add(derLength);  //total length r lenth, type and r bytes
+
+            derBytes.Add(2); //tag for integer
+            derBytes.Add(rbytesLength); //length of r
+            derBytes.AddRange(rBytes);
+
+            derBytes.Add(2); //tag for integer
+            derBytes.Add(sbytesLength); //length of s
+            derBytes.AddRange(sBytes);
+            return derBytes.ToArray();
+        }
+
+        private  RSACryptoServiceProvider{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} GetRSAProviderFromPemFile(String pemfile, SecureString{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} keyPassPharse = null)
+        {
+            const String pempubheader = "-----BEGIN PUBLIC KEY-----";
+            const String pempubfooter = "-----END PUBLIC KEY-----";
+            bool isPrivateKeyFile = true;
+            byte[]{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} pemkey = null;
+
+            if (!File.Exists(pemfile))
+                throw new Exception("private key file does not exist.");
+
+            string pemstr = File.ReadAllText(pemfile).Trim();
+
+            if (pemstr.StartsWith(pempubheader) && pemstr.EndsWith(pempubfooter))
+                isPrivateKeyFile = false;
+
+            if (isPrivateKeyFile)
+            {
+                pemkey = ConvertPrivateKeyToBytes(pemstr, keyPassPharse);
+
+                if (pemkey == null)
+                    return null;
+
+                return DecodeRSAPrivateKey(pemkey);
+            }
+            return null;
+        }
+
+        private byte[]{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} ConvertPrivateKeyToBytes(String instr, SecureString{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} keyPassPharse = null)
+        {
+            const String pemprivheader = "-----BEGIN RSA PRIVATE KEY-----";
+            const String pemprivfooter = "-----END RSA PRIVATE KEY-----";
+            String pemstr = instr.Trim();
+            byte[] binkey;
+
+            if (!pemstr.StartsWith(pemprivheader) || !pemstr.EndsWith(pemprivfooter))
+                return null;
+
+            StringBuilder sb = new StringBuilder(pemstr);
+            sb.Replace(pemprivheader, "");
+            sb.Replace(pemprivfooter, "");
+            String pvkstr = sb.ToString().Trim();
+
+            try
+            {   // if there are no PEM encryption info lines, this is an UNencrypted PEM private key
+                binkey = Convert.FromBase64String(pvkstr);
+                return binkey;
+            }
+            catch (System.FormatException)
+            {
+                StringReader str = new StringReader(pvkstr);
+
+                //-------- read PEM encryption info. lines and extract salt -----
+                if (!str.ReadLine(){{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}.StartsWith("Proc-Type: 4,ENCRYPTED"))  // TODO: what do we do here if ReadLine is null?
+                    return null;
+                
+                String saltline = str.ReadLine(){{#nullableReferenceTypes}}!{{/nullableReferenceTypes}};  // TODO: what do we do here if ReadLine is null?
+                if (!saltline.StartsWith("DEK-Info: DES-EDE3-CBC,"))
+                    return null;
+                
+                String saltstr = saltline.Substring(saltline.IndexOf(",") + 1).Trim();
+                byte[] salt = new byte[saltstr.Length / 2];
+                for (int i = 0; i < salt.Length; i++)
+                    salt[i] = Convert.ToByte(saltstr.Substring(i * 2, 2), 16);
+
+                if (!(str.ReadLine() == ""))
+                    return null;
+
+                //------ remaining b64 data is encrypted RSA key ----
+                String encryptedstr = str.ReadToEnd();
+
+                try
+                {   //should have b64 encrypted RSA key now
+                    binkey = Convert.FromBase64String(encryptedstr);
+                }
+                catch (System.FormatException)
+                {   //data is not in base64 fromat
+                    return null;
+                }
+
+                // TODO: what do we do here if keyPassPharse is null?
+                byte[] deskey = GetEncryptedKey(salt, keyPassPharse{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}, 1, 2);    // count=1 (for OpenSSL implementation); 2 iterations to get at least 24 bytes
+                if (deskey == null)
+                    return null;
+
+                //------ Decrypt the encrypted 3des-encrypted RSA private key ------
+                byte[]{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} rsakey = DecryptKey(binkey, deskey, salt); //OpenSSL uses salt value in PEM header also as 3DES IV
+
+                return rsakey;
+            }
+        }
+
+        private RSACryptoServiceProvider{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} DecodeRSAPrivateKey(byte[] privkey)
+        {
+            byte[] MODULUS, E, D, P, Q, DP, DQ, IQ;
+
+            // ---------  Set up stream to decode the asn.1 encoded RSA private key  ------
+            MemoryStream mem = new MemoryStream(privkey);
+            BinaryReader binr = new BinaryReader(mem);    //wrap Memory Stream with BinaryReader for easy reading
+            byte bt = 0;
+            ushort twobytes = 0;
+            int elems = 0;
+            try
+            {
+                twobytes = binr.ReadUInt16();
+                if (twobytes == 0x8130) //data read as little endian order (actual data order for Sequence is 30 81)
+                    binr.ReadByte();    //advance 1 byte
+                else if (twobytes == 0x8230)
+                    binr.ReadInt16();   //advance 2 bytes
+                else
+                    return null;
+
+                twobytes = binr.ReadUInt16();
+                if (twobytes != 0x0102) //version number
+                    return null;
+                
+                bt = binr.ReadByte();
+                if (bt != 0x00)
+                    return null;
+                
+                //------  all private key components are Integer sequences ----
+                elems = GetIntegerSize(binr);
+                MODULUS = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                E = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                D = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                P = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                Q = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                DP = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                DQ = binr.ReadBytes(elems);
+
+                elems = GetIntegerSize(binr);
+                IQ = binr.ReadBytes(elems);
+
+                // ------- create RSACryptoServiceProvider instance and initialize with public key -----
+                RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
+                RSAParameters RSAparams = new RSAParameters();
+                RSAparams.Modulus = MODULUS;
+                RSAparams.Exponent = E;
+                RSAparams.D = D;
+                RSAparams.P = P;
+                RSAparams.Q = Q;
+                RSAparams.DP = DP;
+                RSAparams.DQ = DQ;
+                RSAparams.InverseQ = IQ;
+                RSA.ImportParameters(RSAparams);
+                return RSA;
+            }
+            catch (Exception)
+            {
+                return null;
+            }
+            finally
+            {
+                binr.Close();
+            }
+        }
+
+        private int GetIntegerSize(BinaryReader binr)
+        {
+            byte bt = 0;
+            byte lowbyte = 0x00;
+            byte highbyte = 0x00;
+            int count = 0;
+            bt = binr.ReadByte();
+            if (bt != 0x02) //expect integer
+                return 0;
+            
+            bt = binr.ReadByte();
+
+            if (bt == 0x81)
+                count = binr.ReadByte();    // data size in next byte
+            else if (bt == 0x82)
+            {
+                highbyte = binr.ReadByte(); // data size in next 2 bytes
+                lowbyte = binr.ReadByte();
+                byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
+                count = BitConverter.ToInt32(modint, 0);
+            }
+            else
+                count = bt;     // we already have the data size
+            
+            while (binr.ReadByte() == 0x00)
+                //remove high order zeros in data
+                count -= 1;
+            
+            binr.BaseStream.Seek(-1, SeekOrigin.Current);
+
+            //last ReadByte wasn't a removed zero, so back up a byte
+            return count;
+        }
+
+        private byte[] GetEncryptedKey(byte[] salt, SecureString secpswd, int count, int miter)
+        {
+            IntPtr unmanagedPswd = IntPtr.Zero;
+            int HASHLENGTH = 16;    //MD5 bytes
+            byte[] keymaterial = new byte[HASHLENGTH * miter];     //to store concatenated Mi hashed results
+
+            byte[] psbytes = new byte[secpswd.Length];
+            unmanagedPswd = Marshal.SecureStringToGlobalAllocAnsi(secpswd);
+            Marshal.Copy(unmanagedPswd, psbytes, 0, psbytes.Length);
+            Marshal.ZeroFreeGlobalAllocAnsi(unmanagedPswd);
+
+            // --- concatenate salt and pswd bytes into fixed data array ---
+            byte[] data00 = new byte[psbytes.Length + salt.Length];
+            Array.Copy(psbytes, data00, psbytes.Length);      //copy the pswd bytes
+            Array.Copy(salt, 0, data00, psbytes.Length, salt.Length); //concatenate the salt bytes
+
+            // ---- do multi-hashing and concatenate results  D1, D2 ...  into keymaterial bytes ----
+            MD5 md5 = new MD5CryptoServiceProvider();
+            byte[]{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} result = null;
+            byte[] hashtarget = new byte[HASHLENGTH + data00.Length];   //fixed length initial hashtarget
+
+            for (int j = 0; j < miter; j++)
+            {
+                // ----  Now hash consecutively for count times ------
+                if (j == 0)
+                    result = data00;    //initialize
+                else
+                {
+                    Array.Copy(result{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}, hashtarget, result{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}.Length); // TODO: what do we do if result is null here?
+                    Array.Copy(data00, 0, hashtarget, result.Length, data00.Length);
+                    result = hashtarget;
+                }
+
+                for (int i = 0; i < count; i++)
+                    result = md5.ComputeHash(result);
+
+                Array.Copy(result, 0, keymaterial, j * HASHLENGTH, result.Length);  //concatenate to keymaterial
+            }
+            byte[] deskey = new byte[24];
+            Array.Copy(keymaterial, deskey, deskey.Length);
+
+            Array.Clear(psbytes, 0, psbytes.Length);
+            Array.Clear(data00, 0, data00.Length);
+            Array.Clear(result{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}, 0, result{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}.Length); // TODO: what do we do if result is null here?
+            Array.Clear(hashtarget, 0, hashtarget.Length);
+            Array.Clear(keymaterial, 0, keymaterial.Length);
+            return deskey;
+        }
+
+        private byte[]{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} DecryptKey(byte[] cipherData, byte[] desKey, byte[] IV)
+        {
+            MemoryStream memst = new MemoryStream();
+            TripleDES alg = TripleDES.Create();
+            alg.Key = desKey;
+            alg.IV = IV;
+            try
+            {
+                CryptoStream cs = new CryptoStream(memst, alg.CreateDecryptor(), CryptoStreamMode.Write);
+                cs.Write(cipherData, 0, cipherData.Length);
+                cs.Close();
+            }
+            catch (Exception)
+            {
+                return null;
+            }
+            byte[] decryptedData = memst.ToArray();
+            return decryptedData;
+        }
+
+        /// <summary>
+        /// Detect the key type from the pem file.
+        /// </summary>
+        /// <param name="keyFilePath">key file path in pem format</param>
+        /// <returns></returns>
+        private PrivateKeyType GetKeyType(string keyFilePath)
+        {
+            if (!File.Exists(keyFilePath))
+                throw new Exception("Key file path does not exist.");
+
+            var ecPrivateKeyHeader = "BEGIN EC PRIVATE KEY";
+            var ecPrivateKeyFooter = "END EC PRIVATE KEY";
+            var rsaPrivateKeyHeader = "BEGIN RSA PRIVATE KEY";
+            var rsaPrivateFooter = "END RSA PRIVATE KEY";
+            //var pkcs8Header = "BEGIN PRIVATE KEY";
+            //var pkcs8Footer = "END PRIVATE KEY";
+            var keyType = PrivateKeyType.None;
+            var key = File.ReadAllLines(keyFilePath);
+
+            if (key[0].ToString().Contains(rsaPrivateKeyHeader) && key[key.Length - 1].ToString().Contains(rsaPrivateFooter))
+                keyType = PrivateKeyType.RSA;
+            else if (key[0].ToString().Contains(ecPrivateKeyHeader) && key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
+                keyType = PrivateKeyType.ECDSA;
+
+            else if (key[0].ToString().Contains(ecPrivateKeyHeader) && key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
+            {
+                /* this type of key can hold many type different types of private key, but here due lack of pem header
+                Considering this as EC key
+                */
+                //TODO :- update the key based on oid
+                keyType = PrivateKeyType.ECDSA;
+            }
+            else
+                throw new Exception("Either the key is invalid or key is not supported");
+            
+            return keyType;
+        }
+        #endregion
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HttpSigningToken.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HttpSigningToken.mustache
new file mode 100644
index 00000000000..ca47cca24da
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/HttpSigningToken.mustache
@@ -0,0 +1,43 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// A token constructed from an HttpSigningConfiguration
+    /// </summary>
+    public class HttpSignatureToken : TokenBase
+    {
+        private HttpSigningConfiguration _configuration;
+
+        /// <summary>
+        /// Constructs an HttpSignatureToken object.
+        /// </summary>
+        /// <param name="configuration"></param>
+        /// <param name="timeout"></param>
+        public HttpSignatureToken(HttpSigningConfiguration configuration, TimeSpan? timeout = null) : base(timeout)
+        {
+            _configuration = configuration;
+        }
+
+        /// <summary>
+        /// Places the token in the header.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="requestBody"></param>
+        /// <param name="cancellationToken"></param>
+        public void UseInHeader(System.Net.Http.HttpRequestMessage request, string requestBody, CancellationToken? cancellationToken = null)
+        {
+            var signedHeaders = _configuration.GetHttpSignedHeader(request, requestBody, cancellationToken);
+
+            foreach (var signedHeader in signedHeaders)
+                request.Headers.Add(signedHeader.Key, signedHeader.Value);
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/IApi.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/IApi.mustache
new file mode 100644
index 00000000000..78856d47816
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/IApi.mustache
@@ -0,0 +1,21 @@
+using System.Net.Http;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// Any Api client
+    /// </summary>
+    public interface {{interfacePrefix}}Api
+    {
+        /// <summary>
+        /// The HttpClient
+        /// </summary>
+        HttpClient HttpClient { get; }
+
+        /// <summary>
+        /// An event to track the health of the server. 
+        /// If you store these event args, be sure to purge old event args to prevent a memory leak.
+        /// </summary>
+        event ClientUtils.EventHandler<ApiResponseEventArgs>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} ApiResponded;
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/OAuthToken.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/OAuthToken.mustache
new file mode 100644
index 00000000000..d15a01cf9d3
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/OAuthToken.mustache
@@ -0,0 +1,39 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// A token constructed with OAuth.
+    /// </summary>
+    public class OAuthToken : TokenBase
+    {
+        private string _raw;
+
+        /// <summary>
+        /// Consturcts an OAuthToken object.
+        /// </summary>
+        /// <param name="value"></param>
+        /// <param name="timeout"></param>
+        public OAuthToken(string value, TimeSpan? timeout = null) : base(timeout)
+        {
+            _raw = value;
+        }
+
+        /// <summary>
+        /// Places the token in the header.
+        /// </summary>
+        /// <param name="request"></param>
+        /// <param name="headerName"></param>
+        public virtual void UseInHeader(System.Net.Http.HttpRequestMessage request, string headerName)
+        {
+            request.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _raw);
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/README.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/README.mustache
new file mode 100644
index 00000000000..608e3fa8654
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/README.mustache
@@ -0,0 +1,214 @@
+# Created with Openapi Generator
+
+<a name="cli"></a>
+## Run the following powershell command to generate the library
+
+```ps1
+$properties = @(
+    'apiName={{apiName}}',
+    'targetFramework={{targetFramework}}',
+    'validatable={{validatable}}',
+    'nullableReferenceTypes={{nullableReferenceTypes}}',
+    'hideGenerationTimestamp={{hideGenerationTimestamp}}',
+    'packageVersion={{packageVersion}}',
+    'packageAuthors={{packageAuthors}}',
+    'packageCompany={{packageCompany}}',
+    'packageCopyright={{packageCopyright}}',
+    'packageDescription={{packageDescription}}',{{#licenseId}}
+    'licenseId={{.}}',{{/licenseId}}
+    'packageName={{packageName}}',
+    'packageTags={{packageTags}}',
+    'packageTitle={{packageTitle}}'
+) -join ","
+
+$global = @(
+    'apiDocs={{generateApiDocs}}',
+    'modelDocs={{generateModelDocs}}',
+    'apiTests={{generateApiTests}}',
+    'modelTests={{generateModelTests}}'
+) -join ","
+
+java -jar "<path>/openapi-generator/modules/openapi-generator-cli/target/openapi-generator-cli.jar" generate `
+    -g csharp-netcore `
+    -i <your-swagger-file>.yaml `
+    -o <your-output-folder> `
+    --library generichost `
+    --additional-properties $properties `
+    --global-property $global `
+    --git-host "{{gitHost}}" `
+    --git-repo-id "{{gitRepoId}}" `
+    --git-user-id "{{gitUserId}}" `
+    --release-note "{{releaseNote}}"
+    # -t templates
+```
+
+<a name="usage"></a>
+## Using the library in your project
+
+```cs
+using System;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.DependencyInjection;
+using {{packageName}}.Api;
+using {{packageName}}.Client;
+using {{packageName}}.Model;
+
+namespace YourProject
+{
+    public class Program
+    {
+        public static async Task Main(string[] args)
+        {
+            var host = CreateHostBuilder(args).Build();{{#apiInfo}}{{#apis}}{{#-first}}
+            var api = host.Services.GetRequiredService<{{interfacePrefix}}{{classname}}>();{{#operations}}{{#-first}}{{#operation}}{{#-first}}
+            ApiResponse<{{#returnType}}{{{.}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> foo = await api.{{operationId}}WithHttpInfoAsync("todo");{{/-first}}{{/operation}}{{/-first}}{{/operations}}{{/-first}}{{/apis}}{{/apiInfo}}
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args)
+          .Configure{{apiName}}((context, options) =>
+          {
+              {{#authMethods}}// the type of token here depends on the api security specifications
+              ApiKeyToken token = new("<your token>");
+              options.AddTokens(token);
+
+              // optionally choose the method the tokens will be provided with, default is RateLimitProvider
+              options.UseProvider<RateLimitProvider<ApiKeyToken>, ApiKeyToken>();
+
+              {{/authMethods}}options.ConfigureJsonOptions((jsonOptions) =>
+              {
+                  // your custom converters if any
+              });
+
+              options.Add{{apiName}}HttpClients(builder: builder => builder
+                .AddRetryPolicy(2)
+                .AddTimeoutPolicy(TimeSpan.FromSeconds(5))
+                .AddCircuitBreakerPolicy(10, TimeSpan.FromSeconds(30))
+                // add whatever middleware you prefer
+              );
+          });
+    }
+}
+```
+<a name="questions"></a>
+## Questions
+
+- What about HttpRequest failures and retries?
+  If supportsRetry is enabled, you can configure Polly in the ConfigureClients method.
+- How are tokens used?
+  Tokens are provided by a TokenProvider class. The default is RateLimitProvider which will perform client side rate limiting.
+  Other providers can be used with the UseProvider method.
+- Does an HttpRequest throw an error when the server response is not Ok?
+  It depends how you made the request. If the return type is ApiResponse<T> no error will be thrown, though the Content property will be null. 
+  StatusCode and ReasonPhrase will contain information about the error.
+  If the return type is T, then it will throw. If the return type is TOrDefault, it will return null.
+
+<a name="dependencies"></a>
+## Dependencies
+
+- [Microsoft.Extensions.Hosting](https://www.nuget.org/packages/Microsoft.Extensions.Hosting/) - 5.0.0 or later
+- [Microsoft.Extensions.Http](https://www.nuget.org/packages/Microsoft.Extensions.Http/) - 5.0.0 or later{{#supportsRetry}}
+- [Microsoft.Extensions.Http.Polly](https://www.nuget.org/packages/Microsoft.Extensions.Http.Polly/) - 5.0.1 or later
+- [Polly](https://www.nuget.org/packages/Polly/) - 7.2.2 or later{{/supportsRetry}}
+- [Newtonsoft.Json](https://www.nuget.org/packages/Newtonsoft.Json/) - 12.0.3 or later
+- [JsonSubTypes](https://www.nuget.org/packages/JsonSubTypes/) - 1.7.0 or later{{#useCompareNetObjects}}
+- [CompareNETObjects](https://www.nuget.org/packages/CompareNETObjects) - 4.61.0 or later{{/useCompareNetObjects}}{{#validatable}}
+- [System.ComponentModel.Annotations](https://www.nuget.org/packages/System.ComponentModel.Annotations) - 4.7.0 or later{{/validatable}}{{#apiDocs}}
+
+<a name="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *{{{basePath}}}*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------{{#apiInfo}}{{#apis}}{{#operations}}{{#operation}}
+*{{classname}}* | [**{{operationId}}**]({{apiDocPath}}{{classname}}.md#{{operationIdLowerCase}}) | **{{httpMethod}}** {{path}} | {{#summary}}{{{summary}}}{{/summary}}{{/operation}}{{/operations}}{{/apis}}{{/apiInfo}}{{/apiDocs}}{{#modelDocs}}
+
+<a name="documentation-for-models"></a>
+## Documentation for Models
+
+{{#modelPackage}}{{#models}}{{#model}} - [{{{modelPackage}}}.{{{classname}}}]({{modelDocPath}}{{{classname}}}.md){{/model}}{{/models}}{{/modelPackage}}
+{{^modelPackage}}No model defined in this package{{/modelPackage}}{{/modelDocs}}
+
+<a name="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+{{^authMethods}}All endpoints do not require authorization.{{/authMethods}}{{#authMethods}}{{#-last}}Authentication schemes defined for the API:{{/-last}}{{/authMethods}}{{#authMethods}}
+
+<a name="{{name}}"></a>
+### {{name}}
+
+{{#isApiKey}}- **Type**: API key
+- **API key parameter name**: {{keyParamName}}
+- **Location**: {{#isKeyInQuery}}URL query string{{/isKeyInQuery}}{{#isKeyInHeader}}HTTP header{{/isKeyInHeader}}{{/isApiKey}}{{#isBasicBasic}}
+- **Type**: HTTP basic authentication{{/isBasicBasic}}{{#isBasicBearer}}
+- **Type**: Bearer Authentication{{/isBasicBearer}}{{#isOAuth}}
+- **Type**: OAuth
+- **Flow**: {{flow}}
+- **Authorization URL**: {{authorizationUrl}}
+- **Scopes**: {{^scopes}}N/A{{/scopes}}{{#scopes}}  
+- {{scope}}: {{description}}{{/scopes}}{{/isOAuth}}{{/authMethods}}
+
+## Build
+- SDK version: {{packageVersion}}{{^hideGenerationTimestamp}}
+- Build date: {{generatedDate}}{{/hideGenerationTimestamp}}
+- Build package: {{generatorClass}}
+
+## Api Information
+- appName: {{appName}}
+- appVersion: {{appVersion}}
+- appDescription: {{appDescription}}
+
+## [OpenApi Global properties](https://openapi-generator.tech/docs/globals)
+- generateAliasAsModel: {{generateAliasAsModel}}
+- supportingFiles: {{supportingFiles}}
+- models: omitted for brevity
+- apis: omitted for brevity
+- apiDocs: {{generateApiDocs}}
+- modelDocs: {{generateModelDocs}}
+- apiTests: {{generateApiTests}}
+- modelTests: {{generateModelTests}}
+- withXml: {{withXml}}
+
+## [OpenApi Generator Parameteres](https://openapi-generator.tech/docs/generators/csharp-netcore)
+- allowUnicodeIdentifiers: {{allowUnicodeIdentifiers}}
+- apiName: {{apiName}}
+- caseInsensitiveResponseHeaders: {{caseInsensitiveResponseHeaders}}
+- conditionalSerialization: {{conditionalSerialization}}
+- disallowAdditionalPropertiesIfNotPresent: {{disallowAdditionalPropertiesIfNotPresent}}
+- gitHost: {{gitHost}}
+- gitRepoId: {{gitRepoId}}
+- gitUserId: {{gitUserId}}
+- hideGenerationTimestamp: {{hideGenerationTimestamp}}
+- interfacePrefix: {{interfacePrefix}}
+- library: {{library}}
+- licenseId: {{licenseId}}
+- modelPropertyNaming: {{modelPropertyNaming}}
+- netCoreProjectFile: {{netCoreProjectFile}}
+- nonPublicApi: {{nonPublicApi}}
+- nullableReferenceTypes: {{nullableReferenceTypes}}
+- optionalAssemblyInfo: {{optionalAssemblyInfo}}
+- optionalEmitDefaultValues: {{optionalEmitDefaultValues}}
+- optionalMethodArgument: {{optionalMethodArgument}}
+- optionalProjectFile: {{optionalProjectFile}}
+- packageAuthors: {{packageAuthors}}
+- packageCompany: {{packageCompany}}
+- packageCopyright: {{packageCopyright}}
+- packageDescription: {{packageDescription}}
+- packageGuid: {{packageGuid}}
+- packageName: {{packageName}}
+- packageTags: {{packageTags}}
+- packageTitle: {{packageTitle}}
+- packageVersion: {{packageVersion}}
+- releaseNote: {{releaseNote}}
+- returnICollection: {{returnICollection}}
+- sortParamsByRequiredFlag: {{sortParamsByRequiredFlag}}
+- sourceFolder: {{sourceFolder}}
+- targetFramework: {{targetFramework}}
+- useCollection: {{useCollection}}
+- useDateTimeOffset: {{useDateTimeOffset}}
+- useOneOfDiscriminatorLookup: {{useOneOfDiscriminatorLookup}}
+- validatable: {{validatable}}{{#infoUrl}}
+For more information, please visit [{{{.}}}]({{{.}}}){{/infoUrl}}
+
+This C# SDK is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/RateLimitProvider`1.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/RateLimitProvider`1.mustache
new file mode 100644
index 00000000000..3a778c0aeec
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/RateLimitProvider`1.mustache
@@ -0,0 +1,106 @@
+// <auto-generated>
+{{>partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;{{^netStandard}}
+using System.Threading.Channels;{{/netStandard}}{{#netStandard}}
+using System.Collections.Concurrent;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;{{/netStandard}}
+
+namespace {{packageName}}.Client {{^netStandard}}
+{
+    /// <summary>
+    /// Provides a token to the api clients. Tokens will be rate limited based on the provided TimeSpan.
+    /// </summary>
+    /// <typeparam name="TTokenBase"></typeparam>
+    public class RateLimitProvider<TTokenBase> : TokenProvider<TTokenBase> where TTokenBase : TokenBase
+    {
+        internal Channel<TTokenBase> AvailableTokens { get; }
+
+        /// <summary>
+        /// Instantiates a ThrottledTokenProvider. Your tokens will be rate limited based on the token's timeout.
+        /// </summary>
+        /// <param name="container"></param>
+        public RateLimitProvider(TokenContainer<TTokenBase> container) : base(container.Tokens)
+        {
+            foreach(TTokenBase token in _tokens)
+                token.StartTimer(token.Timeout ?? TimeSpan.FromMilliseconds(40));
+
+            BoundedChannelOptions options = new BoundedChannelOptions(_tokens.Length) 
+            { 
+                FullMode = BoundedChannelFullMode.DropWrite 
+            };
+
+            AvailableTokens = Channel.CreateBounded<TTokenBase>(options);
+
+            for (int i = 0; i < _tokens.Length; i++)
+                _tokens[i].TokenBecameAvailable += ((sender) => AvailableTokens.Writer.TryWrite((TTokenBase) sender));
+        }
+
+        internal override async System.Threading.Tasks.ValueTask<TTokenBase> GetAsync(System.Threading.CancellationToken? cancellation = null) 
+            => await AvailableTokens.Reader.ReadAsync(cancellation.GetValueOrDefault()).ConfigureAwait(false);
+    }
+} {{/netStandard}}{{#netStandard}}
+{
+    /// <summary>
+    /// Provides a token to the api clients. Tokens will be rate limited based on the provided TimeSpan.
+    /// </summary>
+    /// <typeparam name="TTokenBase"></typeparam>
+    public class RateLimitProvider<TTokenBase> : TokenProvider<TTokenBase> where TTokenBase : TokenBase
+    {
+        internal ConcurrentDictionary<TTokenBase, TTokenBase> AvailableTokens = new ConcurrentDictionary<TTokenBase, TTokenBase>();
+        private SemaphoreSlim _semaphore;
+
+        /// <summary>
+        /// Instantiates a ThrottledTokenProvider. Your tokens will be rate limited based on the token's timeout.
+        /// </summary>
+        /// <param name="container"></param>
+        public RateLimitProvider(TokenContainer<TTokenBase> container) : base(container.Tokens)
+        {
+            _semaphore = new SemaphoreSlim(1, 1);
+
+            foreach(TTokenBase token in _tokens)
+                token.StartTimer(token.Timeout ?? TimeSpan.FromMilliseconds(40));
+
+            for (int i = 0; i < _tokens.Length; i++)
+            {
+                _tokens[i].TokenBecameAvailable += ((sender) =>
+                {
+                    TTokenBase token = (TTokenBase)sender;
+
+                    AvailableTokens.TryAdd(token, token);
+                });
+            }
+        }
+
+        internal override async System.Threading.Tasks.ValueTask<TTokenBase> GetAsync(System.Threading.CancellationToken? cancellation = null)
+        {
+            await _semaphore.WaitAsync().ConfigureAwait(false);
+
+            try
+            {
+                TTokenBase result = null;
+                
+                while (result == null)
+                {
+                    TTokenBase tokenToRemove = AvailableTokens.FirstOrDefault().Value;
+
+                    if (tokenToRemove != null && AvailableTokens.TryRemove(tokenToRemove, out result))
+                        return result;
+
+                    await Task.Delay(40).ConfigureAwait(false);
+
+                    tokenToRemove = AvailableTokens.FirstOrDefault().Value;
+                }
+
+                return result;
+            }
+            finally
+            {
+                _semaphore.Release();
+            }
+        }
+    }
+} {{/netStandard}}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenBase.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenBase.mustache
new file mode 100644
index 00000000000..0b8db5d10ae
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenBase.mustache
@@ -0,0 +1,71 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// The base for all tokens.
+    /// </summary>
+    public abstract class TokenBase
+    {
+        private DateTime _nextAvailable = DateTime.UtcNow;
+        private object _nextAvailableLock = new object();
+        private readonly System.Timers.Timer _timer = new System.Timers.Timer();
+
+
+        internal TimeSpan? Timeout { get; set; }
+        internal delegate void TokenBecameAvailableEventHandler(object sender);
+        internal event TokenBecameAvailableEventHandler{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} TokenBecameAvailable;
+
+
+        /// <summary>
+        /// Initialize a TokenBase object.
+        /// </summary>
+        /// <param name="timeout"></param>
+        internal TokenBase(TimeSpan? timeout = null)
+        {
+            Timeout = timeout;
+            
+            if (Timeout != null)
+                StartTimer(Timeout.Value);
+        }
+
+
+        /// <summary>
+        /// Starts the token's timer
+        /// </summary>
+        /// <param name="timeout"></param>
+        internal void StartTimer(TimeSpan timeout)
+        {
+            Timeout = timeout;
+            _timer.Interval = Timeout.Value.TotalMilliseconds;
+            _timer.Elapsed += OnTimer;
+            _timer.AutoReset = true;
+            _timer.Start();
+        }
+
+        /// <summary>
+        /// Returns true while the token is rate limited.
+        /// </summary>
+        public bool IsRateLimited => _nextAvailable > DateTime.UtcNow;
+
+        /// <summary>
+        /// Triggered when the server returns status code TooManyRequests
+        /// Once triggered the local timeout will be extended an arbitrary length of time.
+        /// </summary>
+        public void BeginRateLimit()
+        {
+            lock(_nextAvailableLock)
+                _nextAvailable = DateTime.UtcNow.AddSeconds(5);
+        }
+
+        private void OnTimer(object sender, System.Timers.ElapsedEventArgs e)
+        {
+            if (TokenBecameAvailable != null && !IsRateLimited)
+                TokenBecameAvailable.Invoke(this);
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenContainer`1.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenContainer`1.mustache
new file mode 100644
index 00000000000..113f9206fd1
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenContainer`1.mustache
@@ -0,0 +1,37 @@
+// <auto-generated>
+{{partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System.Linq;
+using System.Collections.Generic;
+
+namespace {{packageName}}.Client
+{
+    /// <summary>
+    /// A container for a collection of tokens.
+    /// </summary>
+    /// <typeparam name="TTokenBase"></typeparam>
+    public sealed class TokenContainer<TTokenBase> where TTokenBase : TokenBase
+    {
+        /// <summary>
+        /// The collection of tokens
+        /// </summary>
+        public List<TTokenBase> Tokens { get; } = new List<TTokenBase>();
+
+        /// <summary>
+        /// Instantiates a TokenContainer
+        /// </summary>
+        public TokenContainer()
+        {
+        }
+
+        /// <summary>
+        /// Instantiates a TokenContainer
+        /// </summary>
+        /// <param name="tokens"></param>
+        public TokenContainer(System.Collections.Generic.IEnumerable<TTokenBase> tokens)
+        {
+            Tokens = tokens.ToList();
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenProvider`1.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenProvider`1.mustache
new file mode 100644
index 00000000000..d8b467a30bf
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/TokenProvider`1.mustache
@@ -0,0 +1,36 @@
+// <auto-generated>
+{{>partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using {{packageName}}.Client;
+
+namespace {{packageName}}
+{
+    /// <summary>
+    /// A class which will provide tokens.
+    /// </summary>
+    public abstract class TokenProvider<TTokenBase> where TTokenBase : TokenBase
+    {
+        /// <summary>
+        /// The array of tokens.
+        /// </summary>
+        protected TTokenBase[] _tokens;
+
+        internal abstract System.Threading.Tasks.ValueTask<TTokenBase> GetAsync(System.Threading.CancellationToken? cancellation = null);
+
+        /// <summary>
+        /// Instantiates a TokenProvider.
+        /// </summary>
+        /// <param name="tokens"></param>
+        public TokenProvider(IEnumerable<TTokenBase> tokens)
+        {
+            _tokens = tokens.ToArray();
+
+            if (_tokens.Length == 0)
+                throw new ArgumentException("You did not provide any tokens.");
+        }
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/api.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/api.mustache
new file mode 100644
index 00000000000..880952325e6
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/api.mustache
@@ -0,0 +1,391 @@
+// <auto-generated>
+{{>partial_header}}
+{{#nullableReferenceTypes}}#nullable enable{{/nullableReferenceTypes}}
+
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using {{packageName}}.Client;
+{{#hasImport}}
+using {{packageName}}.{{modelPackage}};
+{{/hasImport}}
+
+namespace {{packageName}}.{{apiPackage}}
+{
+    {{#operations}}
+    /// <summary>
+    /// Represents a collection of functions to interact with the API endpoints
+    /// </summary>
+    {{>visibility}} interface {{interfacePrefix}}{{classname}} : IApi
+    {
+        {{#operation}}
+        /// <summary>
+        /// {{summary}}
+        /// </summary>
+        /// <remarks>
+        /// {{notes}}
+        /// </remarks>
+        /// <exception cref="ApiException">Thrown when fails to make API call</exception>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns>Task&lt;ApiResponse&lt;{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}&gt;&gt;</returns>
+        Task<ApiResponse<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>> {{operationId}}WithHttpInfoAsync({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null);
+        
+        /// <summary>
+        /// {{summary}}
+        /// </summary>
+        /// <remarks>
+        /// {{notes}}
+        /// </remarks>
+        /// <exception cref="ApiException">Thrown when fails to make API call</exception>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns>Task of ApiResponse&lt;{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}object{{/returnType}}&gt;</returns>
+        Task<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> {{operationId}}Async({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null);{{#nullableReferenceTypes}}
+        
+        /// <summary>
+        /// {{summary}}
+        /// </summary>
+        /// <remarks>
+        /// {{notes}}
+        /// </remarks>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns>Task of ApiResponse&lt;{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}object{{/returnType}}?&gt;</returns>
+        Task<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> {{operationId}}OrDefaultAsync({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null);{{/nullableReferenceTypes}}{{^-last}}
+
+        {{/-last}}{{/operation}}
+    }
+
+    /// <summary>
+    /// Represents a collection of functions to interact with the API endpoints
+    /// </summary>
+    {{>visibility}} partial class {{classname}} : {{interfacePrefix}}{{classname}}
+    {
+        /// <summary>
+        /// An event to track the health of the server. 
+        /// If you store these event args, be sure to purge old event args to prevent a memory leak.
+        /// </summary>
+        public event ClientUtils.EventHandler<ApiResponseEventArgs>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} ApiResponded;
+
+        /// <summary>
+        /// The logger
+        /// </summary>
+        public ILogger<{{classname}}> Logger { get; }
+
+        /// <summary>
+        /// The HttpClient
+        /// </summary>
+        public HttpClient HttpClient { get; }{{#hasApiKeyMethods}}
+
+        /// <summary>
+        /// A token provider of type <see cref="ApiKeyProvider"/>
+        /// </summary>
+        public TokenProvider<ApiKeyToken> ApiKeyProvider { get; }{{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+        
+        /// <summary>
+        /// A token provider of type <see cref="BearerToken"/>
+        /// </summary>
+        public TokenProvider<BearerToken> BearerTokenProvider { get; }{{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+        
+        /// <summary>
+        /// A token provider of type <see cref="BasicTokenProvider"/>
+        /// </summary>
+        public TokenProvider<BasicToken> BasicTokenProvider { get; }{{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+        
+        /// <summary>
+        /// A token provider of type <see cref="HttpSignatureTokenProvider"/>
+        /// </summary>
+        public TokenProvider<HttpSignatureToken> HttpSignatureTokenProvider { get; }{{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+        
+        /// <summary>
+        /// A token provider of type <see cref="OauthTokenProvider"/>
+        /// </summary>
+        public TokenProvider<OAuthToken> OauthTokenProvider { get; }{{/hasOAuthMethods}}
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="{{classname}}"/> class.
+        /// </summary>
+        /// <returns></returns>
+        public {{classname}}(ILogger<{{classname}}> logger, HttpClient httpClient{{#hasApiKeyMethods}}, 
+            TokenProvider<ApiKeyToken> apiKeyProvider{{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}, 
+            TokenProvider<BearerToken> bearerTokenProvider{{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}, 
+            TokenProvider<BasicToken> basicTokenProvider{{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}, 
+            TokenProvider<HttpSignatureToken> httpSignatureTokenProvider{{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}, 
+            TokenProvider<OAuthToken> oauthTokenProvider{{/hasOAuthMethods}})
+        {
+            Logger = logger;
+            HttpClient = httpClient;{{#hasApiKeyMethods}}
+            ApiKeyProvider = apiKeyProvider;{{/hasApiKeyMethods}}{{#hasHttpBearerMethods}}
+            BearerTokenProvider = bearerTokenProvider;{{/hasHttpBearerMethods}}{{#hasHttpBasicMethods}}
+            BasicTokenProvider = basicTokenProvider;{{/hasHttpBasicMethods}}{{#hasHttpSignatureMethods}}
+            HttpSignatureTokenProvider = httpSignatureTokenProvider;{{/hasHttpSignatureMethods}}{{#hasOAuthMethods}}
+            OauthTokenProvider = oauthTokenProvider;{{/hasOAuthMethods}}
+        }
+        {{#operation}}
+
+        /// <summary>
+        /// {{summary}} {{notes}}
+        /// </summary>
+        /// <exception cref="ApiException">Thrown when fails to make API call</exception>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns><see cref="Task"/>&lt;<see cref="{{#returnType}}{{.}}{{/returnType}}{{^returnType}}object{{/returnType}}"/>&gt;</returns>
+        public async Task<{{#returnType}}{{{.}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> {{operationId}}Async({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null)
+        {
+            ApiResponse<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> result = await {{operationId}}WithHttpInfoAsync({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}cancellationToken).ConfigureAwait(false);
+            
+            {{^nullableReferenceTypes}}{{#returnTypeIsPrimitive}}#pragma warning disable CS0472 // The result of the expression is always the same since a value of this type is never equal to 'null'
+            {{/returnTypeIsPrimitive}}{{/nullableReferenceTypes}}if (result.Content == null){{^nullableReferenceTypes}}{{#returnTypeIsPrimitive}}
+            #pragma warning disable CS0472 // The result of the expression is always the same since a value of this type is never equal to 'null'{{/returnTypeIsPrimitive}}{{/nullableReferenceTypes}}
+                throw new ApiException(result.ReasonPhrase, result.StatusCode, result.RawContent);
+
+            return result.Content;
+        }{{#nullableReferenceTypes}}
+
+        /// <summary>
+        /// {{summary}} {{notes}}
+        /// </summary>
+        /// <exception cref="ApiException">Thrown when fails to make API call</exception>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns><see cref="Task"/>&lt;<see cref="{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}object{{/returnType}}"/>&gt;</returns>
+        public async Task<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> {{operationId}}OrDefaultAsync({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null)
+        {
+            ApiResponse<{{#returnType}}{{{.}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} result = null;
+            try 
+            {
+                result = await {{operationId}}WithHttpInfoAsync({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}cancellationToken).ConfigureAwait(false);
+            }
+            catch (Exception)
+            {
+            }
+
+            return result != null && result.IsSuccessStatusCode
+                ? result.Content
+                : null;
+        }{{/nullableReferenceTypes}}{{^nullableReferenceTypes}}{{^returnTypeIsPrimitive}}
+{{! Note that this method is a copy paste of above due to NRT complexities }}
+        /// <summary>
+        /// {{summary}} {{notes}}
+        /// </summary>
+        /// <exception cref="ApiException">Thrown when fails to make API call</exception>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns><see cref="Task"/>&lt;<see cref="{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}object{{/returnType}}"/>&gt;</returns>
+        public async Task<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> {{operationId}}OrDefaultAsync({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null)
+        {
+            ApiResponse<{{#returnType}}{{{.}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} result = null;
+            try 
+            {
+                result = await {{operationId}}WithHttpInfoAsync({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}cancellationToken).ConfigureAwait(false);
+            }
+            catch (Exception)
+            {
+            }
+
+            return result != null && result.IsSuccessStatusCode
+                ? result.Content
+                : null;
+        }
+        {{/returnTypeIsPrimitive}}{{/nullableReferenceTypes}}
+
+        /// <summary>
+        /// {{summary}} {{notes}}
+        /// </summary>
+        /// <exception cref="ApiException">Thrown when fails to make API call</exception>
+        {{#allParams}}
+        /// <param name="{{paramName}}">{{description}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}</param>
+        {{/allParams}}
+        /// <param name="cancellationToken">Cancellation Token to cancel the request.</param>
+        /// <returns><see cref="Task"/>&lt;<see cref="ApiResponse{T}"/>&gt; where T : <see cref="{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}object{{/returnType}}"/></returns>
+        public async Task<ApiResponse<{{#returnType}}{{{.}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>> {{operationId}}WithHttpInfoAsync({{#allParams}}{{#required}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/required}}{{^required}}{{{dataType}}} {{paramName}} = null{{^-last}}, {{/-last}}{{/required}}{{/allParams}}{{#allParams.0}}, {{/allParams.0}}System.Threading.CancellationToken? cancellationToken = null)
+        {
+            try
+            {
+                {{#hasRequiredParams}}#pragma warning disable CS0472 // The result of the expression is always the same since a value of this type is never equal to 'null'{{/hasRequiredParams}}{{#allParams}}{{#required}}{{#nullableReferenceTypes}}
+
+                if ({{paramName}} == null)
+                    throw new ArgumentNullException(nameof({{paramName}}));{{/nullableReferenceTypes}}{{^nullableReferenceTypes}}{{^vendorExtensions.x-csharp-value-type}}
+                    
+                if ({{paramName}} == null)
+                    throw new ArgumentNullException(nameof({{paramName}}));{{/vendorExtensions.x-csharp-value-type}}{{/nullableReferenceTypes}}{{/required}}{{/allParams}}{{#hasRequiredParams}}
+                    
+                #pragma warning disable CS0472 // The result of the expression is always the same since a value of this type is never equal to 'null'
+                
+                {{/hasRequiredParams}}using (HttpRequestMessage request = new HttpRequestMessage())
+                {
+                    UriBuilder uriBuilder = new UriBuilder();
+                    uriBuilder.Host = HttpClient.BaseAddress{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}.Host;
+                    uriBuilder.Scheme = ClientUtils.SCHEME;
+                    uriBuilder.Path = ClientUtils.CONTEXT_PATH + "{{path}}";{{#pathParams}}{{#required}}
+                    uriBuilder.Path = uriBuilder.Path.Replace("%7B{{baseName}}%7D", Uri.EscapeDataString({{paramName}}.ToString()));{{/required}}{{^required}}
+
+                    if ({{paramName}} != null)
+                        uriBuilder.Path = uriBuilder.Path + $"/{ Uri.EscapeDataString({{paramName}}).ToString()) }";
+                    {{/required}}{{/pathParams}}{{#queryParams}}{{#-first}}
+
+                    System.Collections.Specialized.NameValueCollection parseQueryString = System.Web.HttpUtility.ParseQueryString(string.Empty);{{/-first}}{{/queryParams}}{{^queryParams}}{{#authMethods}}{{#isApiKey}}{{#isKeyInQuery}}
+                    
+                    System.Collections.Specialized.NameValueCollection parseQueryString = System.Web.HttpUtility.ParseQueryString(string.Empty);{{/isKeyInQuery}}{{/isApiKey}}{{/authMethods}}{{/queryParams}}{{#queryParams}}{{#required}}{{#-first}}
+
+    {{! all the redundant tags here are to get the spacing just right }}
+                    {{/-first}}{{/required}}{{/queryParams}}{{#queryParams}}{{#required}}parseQueryString["{{baseName}}"] = Uri.EscapeDataString({{paramName}}.ToString(){{#nullableReferenceTypes}}!{{/nullableReferenceTypes}});
+                    {{/required}}{{/queryParams}}{{#queryParams}}{{#-first}}
+                    {{/-first}}{{/queryParams}}{{#queryParams}}{{^required}}if ({{paramName}} != null)
+                        parseQueryString["{{baseName}}"] = Uri.EscapeDataString({{paramName}}.ToString(){{#nullableReferenceTypes}}!{{/nullableReferenceTypes}});
+
+                    {{/required}}{{#-last}}uriBuilder.Query = parseQueryString.ToString();{{/-last}}{{/queryParams}}{{#headerParams}}{{#required}}
+                    
+                    request.Headers.Add("{{baseName}}", ClientUtils.ParameterToString({{paramName}}));{{/required}}{{^required}}
+                    
+                    if ({{paramName}} != null)
+                        request.Headers.Add("{{baseName}}", ClientUtils.ParameterToString({{paramName}}));{{/required}}{{/headerParams}}{{#formParams}}{{#-first}}
+
+                    MultipartContent multipartContent = new MultipartContent();
+
+                    request.Content = multipartContent;
+                    
+                    List<KeyValuePair<string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}, string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>> formParams = new List<KeyValuePair<string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}, string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>>();
+
+                    multipartContent.Add(new FormUrlEncodedContent(formParams));{{/-first}}{{^isFile}}{{#required}}
+                    
+                    formParams.Add(new KeyValuePair<string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}, string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>("{{baseName}}", ClientUtils.ParameterToString({{paramName}})));{{/required}}{{^required}}
+
+                    if ({{paramName}} != null)
+                        formParams.Add(new KeyValuePair<string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}, string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>("{{baseName}}", ClientUtils.ParameterToString({{paramName}})));{{/required}}{{/isFile}}{{#isFile}}{{#required}}
+                    
+                    multipartContent.Add(new StreamContent({{paramName}}));{{/required}}{{^required}}
+                    
+                    if ({{paramName}} != null)
+                        multipartContent.Add(new StreamContent({{paramName}}));{{/required}}{{/isFile}}{{/formParams}}{{#bodyParam}}
+                    
+                    if (({{paramName}} as object) is System.IO.Stream stream)
+                        request.Content = new StreamContent(stream);
+                    else
+                        request.Content = new StringContent(Newtonsoft.Json.JsonConvert.SerializeObject({{paramName}}, ClientUtils.JsonSerializerSettings));{{/bodyParam}}{{#authMethods}}{{#-first}}
+
+                    List<TokenBase> tokens = new List<TokenBase>();{{/-first}}{{#isApiKey}}
+                    
+                    ApiKeyToken apiKey = (ApiKeyToken) await ApiKeyProvider.GetAsync(cancellationToken).ConfigureAwait(false);
+                    
+                    tokens.Add(apiKey);{{#isKeyInHeader}}
+                    
+                    apiKey.UseInHeader(request, "{{keyParamName}}");{{/isKeyInHeader}}{{#isKeyInQuery}}
+                    
+                    apiKey.UseInQuery(request, uriBuilder, parseQueryString, "{{keyParamName}}");
+                    
+                    uriBuilder.Query = parseQueryString.ToString();{{/isKeyInQuery}}{{#isKeyInCookie}}
+                    
+                    apiKey.UseInCookie(request, parseQueryString, "{{keyParamName}}");
+                    
+                    uriBuilder.Query = parseQueryString.ToString();{{/isKeyInCookie}}{{/isApiKey}}{{/authMethods}}
+
+    {{! below line must be after any UseInQuery calls, but before using the HttpSignatureToken}}
+                    request.RequestUri = uriBuilder.Uri;{{#authMethods}}{{#isBasicBasic}}
+
+                    BasicToken basicToken = (BasicToken) await BasicTokenProvider.GetAsync(cancellationToken).ConfigureAwait(false);
+
+                    tokens.Add(basicToken);
+                    
+                    basicToken.UseInHeader(request, "{{keyParamName}}");{{/isBasicBasic}}{{#isBasicBearer}}
+
+                    BearerToken bearerToken = (BearerToken) await BearerTokenProvider.GetAsync(cancellationToken).ConfigureAwait(false);
+
+                    tokens.Add(bearerToken);
+                    
+                    bearerToken.UseInHeader(request, "{{keyParamName}}");{{/isBasicBearer}}{{#isOAuth}}
+
+                    OAuthToken oauthToken = (OAuthToken) await OauthTokenProvider.GetAsync(cancellationToken).ConfigureAwait(false);
+
+                    tokens.Add(oauthToken);
+                    
+                    oauthToken.UseInHeader(request, "{{keyParamName}}");{{/isOAuth}}{{#isHttpSignature}}
+                    
+                    HttpSignatureToken signatureToken = (HttpSignatureToken) await HttpSignatureTokenProvider.GetAsync(cancellationToken).ConfigureAwait(false);
+
+                    tokens.Add(signatureToken);
+
+                    string requestBody = await request.Content{{#nullableReferenceTypes}}!{{/nullableReferenceTypes}}.ReadAsStringAsync({{^netStandard}}{{^netcoreapp3.1}}cancellationToken.GetValueOrDefault(){{/netcoreapp3.1}}{{/netStandard}}).ConfigureAwait(false);
+
+                    signatureToken.UseInHeader(request, requestBody, cancellationToken);{{/isHttpSignature}}{{/authMethods}}{{#consumes}}{{#-first}}
+                    
+                    string[] contentTypes = new string[] {
+                        {{/-first}}"{{{mediaType}}}"{{^-last}},
+                        {{/-last}}{{#-last}} 
+                    };{{/-last}}{{/consumes}}{{#consumes}}{{#-first}}
+                    
+                    string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} contentType = ClientUtils.SelectHeaderContentType(contentTypes);
+
+                    if (contentType != null)
+                        request.Content.Headers.Add("ContentType", contentType);{{/-first}}{{/consumes}}{{#produces}}{{#-first}}
+                    
+                    string[] accepts = new string[] { {{/-first}}{{/produces}}
+                        {{#produces}}"{{{mediaType}}}"{{^-last}}, 
+                        {{/-last}}{{/produces}}{{#produces}}{{#-last}} 
+                    };{{/-last}}{{/produces}}{{#produces}}{{#-first}}
+                    
+                    string{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}} accept = ClientUtils.SelectHeaderAccept(accepts);
+
+                    if (accept != null)
+                        request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue(accept));
+                    {{/-first}}{{/produces}}{{^netStandard}}
+                    request.Method = HttpMethod.{{#lambda.titlecase}}{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}{{/lambda.titlecase}};{{/netStandard}}{{#netStandard}}
+                    request.Method = new HttpMethod("{{#lambda.uppercase}}{{httpMethod}}{{/lambda.uppercase}}");{{/netStandard}} {{! early standard versions do not have HttpMethod.Patch }}
+
+                    using (HttpResponseMessage responseMessage = await HttpClient.SendAsync(request, cancellationToken.GetValueOrDefault()).ConfigureAwait(false))
+                    {
+                        DateTime requestedAt = DateTime.UtcNow;
+
+                        string responseContent = await responseMessage.Content.ReadAsStringAsync({{^netStandard}}{{^netcoreapp3.1}}cancellationToken.GetValueOrDefault(){{/netcoreapp3.1}}{{/netStandard}}).ConfigureAwait(false);
+
+                        if (ApiResponded != null)
+                        {
+                            try
+                            {
+                                ApiResponded.Invoke(this, new ApiResponseEventArgs(requestedAt, DateTime.UtcNow, responseMessage.StatusCode, "{{path}}"));
+                            }
+                            catch(Exception e)
+                            {
+                                Logger.LogError(e, "An error occured while invoking ApiResponded.");
+                            }
+                        }
+
+                        ApiResponse<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}> apiResponse = new ApiResponse<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}{{#nullableReferenceTypes}}?{{/nullableReferenceTypes}}>(responseMessage, responseContent);
+
+                        if (apiResponse.IsSuccessStatusCode)
+                            apiResponse.Content = Newtonsoft.Json.JsonConvert.DeserializeObject<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}object{{/returnType}}>(apiResponse.RawContent, ClientUtils.JsonSerializerSettings);{{#authMethods}}
+                        else if (apiResponse.StatusCode == (HttpStatusCode) 429)
+                            foreach(TokenBase token in tokens)
+                                token.BeginRateLimit();{{/authMethods}}
+
+                        return apiResponse;
+                    }
+                }
+            }
+            catch(Exception e)
+            {
+                Logger.LogError(e, "An error occured while sending the request to the server.");
+                throw;
+            }
+        }
+        {{/operation}}
+    }
+    {{/operations}}
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/api_test.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/api_test.mustache
new file mode 100644
index 00000000000..b64731f81dd
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/api_test.mustache
@@ -0,0 +1,46 @@
+{{>partial_header}}
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Xunit;
+using Microsoft.Extensions.DependencyInjection;
+using {{packageName}}.{{apiPackage}};{{#hasImport}}
+using {{packageName}}.{{modelPackage}};{{/hasImport}}
+
+
+{{{testInstructions}}}
+
+
+namespace {{packageName}}.Test.Api
+{
+    /// <summary>
+    ///  Class for testing {{classname}}
+    /// </summary>
+    public sealed class {{classname}}Tests : ApiTestsBase
+    {
+        private readonly {{interfacePrefix}}{{classname}} _instance;
+
+        public {{classname}}Tests(): base(Array.Empty<string>())
+        {
+            _instance = _host.Services.GetRequiredService<{{interfacePrefix}}{{classname}}>();
+        }
+
+        {{#operations}}
+        {{#operation}}
+
+        /// <summary>
+        /// Test {{operationId}}
+        /// </summary>
+        [Fact (Skip = "not implemented")]
+        public async Task {{operationId}}AsyncTest()
+        {
+            {{#allParams}}
+            {{{dataType}}} {{paramName}} = default;
+            {{/allParams}}
+            {{#returnType}}var response = {{/returnType}}await _instance.{{operationId}}Async({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});{{#returnType}}
+            Assert.IsType<{{{.}}}>(response);{{/returnType}}
+        }
+        {{/operation}}
+        {{/operations}}
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/git_push.ps1.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/git_push.ps1.mustache
new file mode 100644
index 00000000000..0f4084ef817
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/git_push.ps1.mustache
@@ -0,0 +1,75 @@
+param(
+    [Parameter()][Alias("g")][String]$GitHost = "{{{gitHost}}}",
+    [Parameter()][Alias("u")][String]$GitUserId = "{{{gitUserId}}}",
+    [Parameter()][Alias("r")][String]$GitRepoId = "{{{gitRepoId}}}",
+    [Parameter()][Alias("m")][string]$Message = "{{{releaseNote}}}",
+    [Parameter()][Alias("h")][switch]$Help
+)
+
+function Publish-ToGitHost{
+    if ([string]::IsNullOrWhiteSpace($Message) -or $Message -eq "Minor update"){
+        # it seems unlikely that we would want our git commit message to be the default, so lets prompt the user
+        $Message = Read-Host -Prompt "Please provide a commit message or press enter"
+        $Message = if([string]::IsNullOrWhiteSpace($Message)) { "no message provided" } else { $Message }
+    }
+
+    git init
+    git add .
+    git commit -am "${Message}"
+    $branchName=$(git rev-parse --abbrev-ref HEAD)
+    $gitRemote=$(git remote)
+
+    if([string]::IsNullOrWhiteSpace($gitRemote)){
+        git remote add origin https://${GitHost}/${GitUserId}/${GitRepoId}.git
+    }
+
+    Write-Output "Pulling from https://${GitHost}/${GitUserId}/${GitRepoId}.git"
+    git pull origin $branchName --ff-only
+
+    if ($LastExitCode -ne 0){
+        if (${GitHost} -eq "github.com"){
+            Write-Output "The ${GitRepoId} repository may not exist yet. Creating it now with the GitHub CLI."
+            gh auth login --hostname github.com --web
+            gh repo create $GitRepoId --private
+            # sleep 2 seconds to ensure git finishes creation of the repo
+            Start-Sleep -Seconds 2
+        }
+        else{
+            throw "There was an issue pulling the origin branch. The remote repository may not exist yet."
+        }
+    }
+
+    Write-Output "Pushing to https://${GitHost}/${GitUserId}/${GitRepoId}.git"
+    git push origin $branchName
+}
+
+$ErrorActionPreference = "Stop"
+Set-StrictMode -Version 3.0
+
+if ($Help){
+    Write-Output "
+    This script will initialize a git repository, then add and commit all files.
+    The local repository will then be pushed to your prefered git provider.
+    If the remote repository does not exist yet and you are using GitHub,
+    the repository will be created for you provided you have the GitHub CLI installed.
+    
+    Parameters:
+    -g | -GitHost   -> ex: github.com
+    -m | -Message   -> the git commit message
+    -r | -GitRepoId -> the name of the repository
+    -u | -GitUserId -> your user id
+    "
+
+    return
+}
+
+$rootPath=Resolve-Path -Path $PSScriptRoot/../..
+
+Push-Location $rootPath
+
+try {
+    Publish-ToGitHost $GitHost $GitUserId $GitRepoId $Message
+}
+finally{
+    Pop-Location
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/git_push.sh.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/git_push.sh.mustache
new file mode 100644
index 00000000000..3d4b710dc03
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/generichost/git_push.sh.mustache
@@ -0,0 +1,49 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-petstore-perl "minor update" "gitlab.com"
+
+git_user_id=${1:-{{{gitUserId}}}}
+git_repo_id=${2:-{{{gitRepoId}}}}
+release_note=${3:-{{{releaseNote}}}}
+git_host=${4:-{{{gitHost}}}}
+
+starting_directory=$(pwd)
+script_root="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+cd $script_root
+cd ../..
+
+if [ "$release_note" = "" ] || [ "$release_note" = "Minor update" ]; then
+    # it seems unlikely that we would want our git commit message to be the default, so lets prompt the user
+    echo "Please provide a commit message or press enter"
+    read user_input
+    release_note=$user_input
+    if [ "$release_note" = "" ]; then
+        release_note="no message provided"
+    fi
+fi
+
+git init
+git add .
+git commit -am "$release_note"
+branch_name=$(git rev-parse --abbrev-ref HEAD)
+git_remote=$(git remote)
+
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+echo "[INFO] Pulling from https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git pull origin $branch_name --ff-only
+
+echo "[INFO] Pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin $branch_name
+
+cd $starting_directory
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/ApiClient.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/ApiClient.mustache
index bd7663012f1..f24c317a702 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/ApiClient.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/ApiClient.mustache
@@ -20,9 +20,6 @@ using System.Web;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 using ErrorEventArgs = Newtonsoft.Json.Serialization.ErrorEventArgs;
-{{#useWebRequest}}
-using System.Net.Http;
-{{/useWebRequest}}
 using System.Net.Http;
 using System.Net.Http.Headers;
 {{#supportsRetry}}
@@ -278,10 +275,12 @@ namespace {{packageName}}.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var content = new StreamContent(fileParam.Value.Content);
-                    content.Headers.ContentType = new MediaTypeHeaderValue(fileParam.Value.ContentType);
-                    multipartContent.Add(content, fileParam.Key,
-                        fileParam.Value.Name);
+                    foreach (var file in fileParam.Value)
+                    {
+                        var content = new StreamContent(file.Content);
+                        content.Headers.ContentType = new MediaTypeHeaderValue(file.ContentType);
+                        multipartContent.Add(content, fileParam.Key, file.Name);
+                    }
                 }
             }
             return multipartContent;
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/RequestOptions.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/RequestOptions.mustache
index bc5a8e348b8..62859649ced 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/RequestOptions.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/RequestOptions.mustache
@@ -38,7 +38,7 @@ namespace {{packageName}}.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, FileParameter> FileParameters { get; set; }
+        public Multimap<string, FileParameter> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -59,7 +59,7 @@ namespace {{packageName}}.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, FileParameter>();
+            FileParameters = new Multimap<string, FileParameter>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/api.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/api.mustache
index f1f8a890d3d..c0d49570a62 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/api.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/libraries/httpclient/api.mustache
@@ -489,21 +489,21 @@ namespace {{packageName}}.{{apiPackage}}
             {{/isApiKey}}
             {{#isBasicBasic}}
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + {{packageName}}.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
             {{/isBasicBasic}}
             {{#isBasicBearer}}
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
             {{/isBasicBearer}}
             {{#isOAuth}}
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -689,14 +689,14 @@ namespace {{packageName}}.{{apiPackage}}
             {{#isBasic}}
             {{#isBasicBasic}}
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + {{packageName}}.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
             {{/isBasicBasic}}
             {{#isBasicBearer}}
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -704,7 +704,7 @@ namespace {{packageName}}.{{apiPackage}}
             {{/isBasic}}
             {{#isOAuth}}
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/modelAnyOf.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/modelAnyOf.mustache
index 7c3b0cc2d94..f216a991130 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/modelAnyOf.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/modelAnyOf.mustache
@@ -171,6 +171,7 @@
             }
         }
 
+        {{#validatable}}
         /// <summary>
         /// To validate all properties of the instance
         /// </summary>
@@ -180,6 +181,7 @@
         {
             yield break;
         }
+        {{/validatable}}
     }
 
     /// <summary>
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/modelOneOf.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/modelOneOf.mustache
index d99b82a1e9e..f60d3cf10f3 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/modelOneOf.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/modelOneOf.mustache
@@ -216,6 +216,7 @@
             }
         }
 
+        {{#validatable}}
         /// <summary>
         /// To validate all properties of the instance
         /// </summary>
@@ -225,6 +226,7 @@
         {
             yield break;
         }
+        {{/validatable}}
     }
 
     /// <summary>
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/model_doc.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/model_doc.mustache
index babf25481c4..3c7f8b2db81 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/model_doc.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/model_doc.mustache
@@ -16,7 +16,7 @@ Name | Type | Description | Notes
 {{#vars}}**{{name}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}[**{{dataType}}**]({{complexType}}.md){{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#isReadOnly}}[readonly] {{/isReadOnly}}{{#defaultValue}}[default to {{{.}}}]{{/defaultValue}}
 {{/vars}}
 
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+[[Back to Model list]](../{{#useGenericHost}}../{{/useGenericHost}}README.md#documentation-for-models) [[Back to API list]](../{{#useGenericHost}}../{{/useGenericHost}}README.md#documentation-for-api-endpoints) [[Back to README]](../{{#useGenericHost}}../{{/useGenericHost}}README.md)
 
 {{/model}}
 {{/models}}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache
index cdb95110a9e..1a544ad8bb1 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_project.mustache
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
-  <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+  <PropertyGroup>{{#useGenericHost}}
+    <GenerateAssemblyInfo>true</GenerateAssemblyInfo> <!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->{{/useGenericHost}}{{^useGenericHost}}
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->{{/useGenericHost}}
     <TargetFramework{{#multiTarget}}s{{/multiTarget}}>{{targetFramework}}</TargetFramework{{#multiTarget}}s{{/multiTarget}}>
     <AssemblyName>{{packageName}}</AssemblyName>
     <PackageId>{{packageName}}</PackageId>
@@ -33,6 +34,13 @@
       {{#useRestSharp}}
     <PackageReference Include="RestSharp" Version="106.13.0" />
       {{/useRestSharp}}
+      {{#useGenericHost}}
+    <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="5.0.0" />
+      {{#supportsRetry}}
+    <PackageReference Include="Microsoft.Extensions.Http.Polly" Version="5.0.1" />
+      {{/supportsRetry}}
+      {{/useGenericHost}}
       {{#supportsRetry}}
     <PackageReference Include="Polly" Version="7.2.2" />
       {{/supportsRetry}}
diff --git a/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_testproject.mustache b/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_testproject.mustache
index b20a94c76c1..d0162788433 100644
--- a/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_testproject.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp-netcore/netcore_testproject.mustache
@@ -4,7 +4,8 @@
     <AssemblyName>{{testPackageName}}</AssemblyName>
     <RootNamespace>{{testPackageName}}</RootNamespace>
     <TargetFramework{{#multiTarget}}s{{/multiTarget}}>{{testTargetFramework}}</TargetFramework{{#multiTarget}}s{{/multiTarget}}>
-    <IsPackable>false</IsPackable>
+    <IsPackable>false</IsPackable>{{#nullableReferenceTypes}}
+    <Nullable>annotations</Nullable>{{/nullableReferenceTypes}}
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/modules/openapi-generator/src/main/resources/go/README.mustache b/modules/openapi-generator/src/main/resources/go/README.mustache
index e6d140d28b2..b00e98e55cb 100644
--- a/modules/openapi-generator/src/main/resources/go/README.mustache
+++ b/modules/openapi-generator/src/main/resources/go/README.mustache
@@ -30,7 +30,7 @@ go get golang.org/x/net/context
 Put the package under your project folder and add the following in import:
 
 ```golang
-import sw "./{{packageName}}"
+import {{packageName}} "{{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}{{/isGoSubmodule}}"
 ```
 
 To use a proxy, set the environment variable `HTTP_PROXY`:
@@ -48,7 +48,7 @@ Default configuration comes with `Servers` field that contains server objects as
 For using other server than the one defined on index 0 set context value `sw.ContextServerIndex` of type `int`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
+ctx := context.WithValue(context.Background(), {{packageName}}.ContextServerIndex, 1)
 ```
 
 ### Templated Server URL
@@ -56,7 +56,7 @@ ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
 Templated server URL is formatted using default variables from configuration or from context value `sw.ContextServerVariables` of type `map[string]string`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerVariables, map[string]string{
+ctx := context.WithValue(context.Background(), {{packageName}}.ContextServerVariables, map[string]string{
 	"basePath": "v2",
 })
 ```
@@ -70,10 +70,10 @@ An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
 Similar rules for overriding default operation server index and variables applies by using `sw.ContextOperationServerIndices` and `sw.ContextOperationServerVariables` context maps.
 
 ```
-ctx := context.WithValue(context.Background(), sw.ContextOperationServerIndices, map[string]int{
+ctx := context.WithValue(context.Background(), {{packageName}}.ContextOperationServerIndices, map[string]int{
 	"{classname}Service.{nickname}": 2,
 })
-ctx = context.WithValue(context.Background(), sw.ContextOperationServerVariables, map[string]map[string]string{
+ctx = context.WithValue(context.Background(), {{packageName}}.ContextOperationServerVariables, map[string]map[string]string{
 	"{classname}Service.{nickname}": {
 		"port": "8443",
 	},
@@ -117,7 +117,7 @@ Note, each API key must be added to a map of `map[string]APIKey` where the key i
 Example
 
 ```golang
-auth := context.WithValue(context.Background(), sw.ContextAccessToken, "BEARERTOKENSTRING")
+auth := context.WithValue(context.Background(), sw.ContextAccessToken, "BEARER_TOKEN_STRING")
 r, err := client.Service.Operation(auth, args)
 ```
 
@@ -142,7 +142,7 @@ r, err := client.Service.Operation(auth, args)
 Example
 
 ```golang
-	authConfig := sw.HttpSignatureAuth{
+	authConfig := client.HttpSignatureAuth{
 		KeyId:                "my-key-id",
 		PrivateKeyPath:       "rsa.pem",
 		Passphrase:           "my-passphrase",
diff --git a/modules/openapi-generator/src/main/resources/go/api.mustache b/modules/openapi-generator/src/main/resources/go/api.mustache
index 4a94d6aaf59..f7a31797b01 100644
--- a/modules/openapi-generator/src/main/resources/go/api.mustache
+++ b/modules/openapi-generator/src/main/resources/go/api.mustache
@@ -4,17 +4,17 @@ package {{packageName}}
 {{#operations}}
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 {{#imports}}	"{{import}}"
 {{/imports}}
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 {{#generateInterfaces}}
 
@@ -28,7 +28,7 @@ type {{classname}} interface {
 	{{{unescapedNotes}}}
 	{{/notes}}
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().{{#pathParams}}
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().{{#pathParams}}
 	 @param {{paramName}}{{#description}} {{{.}}}{{/description}}{{/pathParams}}
 	 @return {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request
 	{{#isDeprecated}}
@@ -36,14 +36,14 @@ type {{classname}} interface {
 	Deprecated
 	{{/isDeprecated}}
 	*/
-	{{{nickname}}}(ctx _context.Context{{#pathParams}}, {{paramName}} {{{dataType}}}{{/pathParams}}) {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request
+	{{{nickname}}}(ctx context.Context{{#pathParams}}, {{paramName}} {{{dataType}}}{{/pathParams}}) {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request
 
 	// {{nickname}}Execute executes the request{{#returnType}}
 	//  @return {{{.}}}{{/returnType}}
 	{{#isDeprecated}}
 	// Deprecated
 	{{/isDeprecated}}
-	{{nickname}}Execute(r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request) ({{#returnType}}{{{.}}}, {{/returnType}}*_nethttp.Response, error)
+	{{nickname}}Execute(r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request) ({{#returnType}}{{^isArray}}{{^returnTypeIsPrimitive}}*{{/returnTypeIsPrimitive}}{{/isArray}}{{{.}}}, {{/returnType}}*http.Response, error)
 	{{/operation}}
 }
 {{/generateInterfaces}}
@@ -53,8 +53,11 @@ type {{classname}}Service service
 {{#operation}}
 
 type {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request struct {
-	ctx _context.Context
-	ApiService {{#generateInterfaces}}{{classname}}{{/generateInterfaces}}{{^generateInterfaces}}*{{classname}}Service{{/generateInterfaces}}
+	ctx context.Context{{#generateInterfaces}}
+	ApiService {{classname}}
+{{/generateInterfaces}}{{^generateInterfaces}}
+	ApiService *{{classname}}Service
+{{/generateInterfaces}}
 {{#allParams}}
 	{{paramName}} {{^isPathParam}}*{{/isPathParam}}{{{dataType}}}
 {{/allParams}}
@@ -71,7 +74,7 @@ func (r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Reques
 	return r
 }{{/isPathParam}}{{/allParams}}
 
-func (r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request) Execute() ({{#returnType}}{{{.}}}, {{/returnType}}*_nethttp.Response, error) {
+func (r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request) Execute() ({{#returnType}}{{^isArray}}{{^returnTypeIsPrimitive}}*{{/returnTypeIsPrimitive}}{{/isArray}}{{{.}}}, {{/returnType}}*http.Response, error) {
 	return r.ApiService.{{nickname}}Execute(r)
 }
 
@@ -82,7 +85,7 @@ func (r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Reques
 {{{unescapedNotes}}}
 {{/notes}}
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().{{#pathParams}}
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().{{#pathParams}}
  @param {{paramName}}{{#description}} {{{.}}}{{/description}}{{/pathParams}}
  @return {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request
 {{#isDeprecated}}
@@ -90,7 +93,7 @@ func (r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Reques
 Deprecated
 {{/isDeprecated}}
 */
-func (a *{{{classname}}}Service) {{{nickname}}}(ctx _context.Context{{#pathParams}}, {{paramName}} {{{dataType}}}{{/pathParams}}) {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request {
+func (a *{{{classname}}}Service) {{{nickname}}}(ctx context.Context{{#pathParams}}, {{paramName}} {{{dataType}}}{{/pathParams}}) {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request {
 	return {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request{
 		ApiService: a,
 		ctx: ctx,
@@ -105,27 +108,27 @@ func (a *{{{classname}}}Service) {{{nickname}}}(ctx _context.Context{{#pathParam
 {{#isDeprecated}}
 // Deprecated
 {{/isDeprecated}}
-func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request) ({{#returnType}}{{{.}}}, {{/returnType}}*_nethttp.Response, error) {
+func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&classname}}{{/structPrefix}}Api{{operationId}}Request) ({{#returnType}}{{^isArray}}{{^returnTypeIsPrimitive}}*{{/returnTypeIsPrimitive}}{{/isArray}}{{{.}}}, {{/returnType}}*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.Method{{httpMethod}}
+		localVarHTTPMethod   = http.Method{{httpMethod}}
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		{{#returnType}}
-		localVarReturnValue  {{{.}}}
+		localVarReturnValue  {{^isArray}}{{^returnTypeIsPrimitive}}*{{/returnTypeIsPrimitive}}{{/isArray}}{{{.}}}
 		{{/returnType}}
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "{{{classname}}}Service.{{{nickname}}}")
 	if err != nil {
-		return {{#returnType}}localVarReturnValue, {{/returnType}}nil, GenericOpenAPIError{error: err.Error()}
+		return {{#returnType}}localVarReturnValue, {{/returnType}}nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "{{{path}}}"{{#pathParams}}
-	localVarPath = strings.Replace(localVarPath, "{"+"{{baseName}}"+"}", _neturl.PathEscape(parameterToString(r.{{paramName}}, "{{collectionFormat}}")), -1){{/pathParams}}
+	localVarPath = strings.Replace(localVarPath, "{"+"{{baseName}}"+"}", url.PathEscape(parameterToString(r.{{paramName}}, "{{collectionFormat}}")), -1){{/pathParams}}
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	{{#allParams}}
 	{{#required}}
 	{{^isPathParam}}
@@ -265,7 +268,7 @@ func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&class
 	}
 {{/required}}
 	if {{paramName}}LocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll({{paramName}}LocalVarFile)
+		fbs, _ := ioutil.ReadAll({{paramName}}LocalVarFile)
 		{{paramName}}LocalVarFileBytes = fbs
 		{{paramName}}LocalVarFileName = {{paramName}}LocalVarFile.Name()
 		{{paramName}}LocalVarFile.Close()
@@ -344,15 +347,15 @@ func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&class
 		return {{#returnType}}localVarReturnValue, {{/returnType}}localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return {{#returnType}}localVarReturnValue, {{/returnType}}localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -399,7 +402,7 @@ func (a *{{{classname}}}Service) {{nickname}}Execute(r {{#structPrefix}}{{&class
 	{{#returnType}}
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/modules/openapi-generator/src/main/resources/go/api_doc.mustache b/modules/openapi-generator/src/main/resources/go/api_doc.mustache
index c99fff852bb..c9927461bda 100644
--- a/modules/openapi-generator/src/main/resources/go/api_doc.mustache
+++ b/modules/openapi-generator/src/main/resources/go/api_doc.mustache
@@ -41,8 +41,8 @@ func main() {
     {{/allParams}}
 
     configuration := {{goImportAlias}}.NewConfiguration()
-    api_client := {{goImportAlias}}.NewAPIClient(configuration)
-    resp, r, err := api_client.{{classname}}.{{operationId}}(context.Background(){{#pathParams}}, {{paramName}}{{/pathParams}}){{#allParams}}{{^isPathParam}}.{{vendorExtensions.x-export-param-name}}({{paramName}}){{/isPathParam}}{{/allParams}}.Execute()
+    apiClient := {{goImportAlias}}.NewAPIClient(configuration)
+    resp, r, err := apiClient.{{classname}}.{{operationId}}(context.Background(){{#pathParams}}, {{paramName}}{{/pathParams}}){{#allParams}}{{^isPathParam}}.{{vendorExtensions.x-export-param-name}}({{paramName}}){{/isPathParam}}{{/allParams}}.Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `{{classname}}.{{operationId}}``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/modules/openapi-generator/src/main/resources/go/client.mustache b/modules/openapi-generator/src/main/resources/go/client.mustache
index 609b362a862..8b9e173fe01 100644
--- a/modules/openapi-generator/src/main/resources/go/client.mustache
+++ b/modules/openapi-generator/src/main/resources/go/client.mustache
@@ -477,6 +477,13 @@ func reportError(format string, a ...interface{}) error {
 	return fmt.Errorf(format, a...)
 }
 
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
 // Set request body from an interface{}
 func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
 	if bodyBuf == nil {
diff --git a/modules/openapi-generator/src/main/resources/go/go.mod.mustache b/modules/openapi-generator/src/main/resources/go/go.mod.mustache
index 97fceb03a92..c7e0fe117e3 100644
--- a/modules/openapi-generator/src/main/resources/go/go.mod.mustache
+++ b/modules/openapi-generator/src/main/resources/go/go.mod.mustache
@@ -3,7 +3,7 @@ module {{gitHost}}/{{gitUserId}}/{{gitRepoId}}{{#isGoSubmodule}}/{{packageName}}
 go 1.13
 
 require (
-	golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99
+	golang.org/x/oauth2 v0.0.0-20210323180902-22b0adad7558
 	{{#withAWSV4Signature}}
 	github.com/aws/aws-sdk-go v1.34.14
 	{{/withAWSV4Signature}}
diff --git a/modules/openapi-generator/src/main/resources/go/model_oneof.mustache b/modules/openapi-generator/src/main/resources/go/model_oneof.mustache
index 45562dcc7c3..dc85c438f10 100644
--- a/modules/openapi-generator/src/main/resources/go/model_oneof.mustache
+++ b/modules/openapi-generator/src/main/resources/go/model_oneof.mustache
@@ -1,14 +1,16 @@
 // {{classname}} - {{{description}}}{{^description}}struct for {{{classname}}}{{/description}}
 type {{classname}} struct {
 	{{#oneOf}}
-	{{{.}}} *{{{.}}}
+	{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}} *{{{.}}}
 	{{/oneOf}}
 }
 
 {{#oneOf}}
 // {{{.}}}As{{classname}} is a convenience function that returns {{{.}}} wrapped in {{classname}}
-func {{{.}}}As{{classname}}(v *{{{.}}}) {{classname}} {
-	return {{classname}}{ {{{.}}}: v}
+func {{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}}As{{classname}}(v *{{{.}}}) {{classname}} {
+	return {{classname}}{
+		{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}}: v,
+	}
 }
 
 {{/oneOf}}
@@ -29,7 +31,7 @@ func (dst *{{classname}}) UnmarshalJSON(data []byte) error {
 	{{#-first}}
 	// use discriminator value to speed up the lookup
 	var jsonDict map[string]interface{}
-	err = json.Unmarshal(data, &jsonDict)
+	err = newStrictDecoder(data).Decode(&jsonDict)
 	if err != nil {
 		return fmt.Errorf("Failed to unmarshal JSON into map for the discriminator lookup.")
 	}
@@ -48,30 +50,60 @@ func (dst *{{classname}}) UnmarshalJSON(data []byte) error {
 	}
 
 	{{/mappedModels}}
-	{{/discriminator}}
 	return nil
+	{{/discriminator}}
+	{{^discriminator}}
+        match := 0
+        {{#oneOf}}
+        // try to unmarshal data into {{{.}}}
+        err = json.Unmarshal(data, &dst.{{{.}}})
+        if err == nil {
+                json{{{.}}}, _ := json.Marshal(dst.{{{.}}})
+                if string(json{{{.}}}) == "{}" { // empty struct
+                        dst.{{{.}}} = nil
+                } else {
+                        match++
+                }
+        } else {
+                dst.{{{.}}} = nil
+        }
+
+        {{/oneOf}}
+        if match > 1 { // more than 1 match
+                // reset to nil
+                {{#oneOf}}
+                dst.{{{.}}} = nil
+                {{/oneOf}}
+
+                return fmt.Errorf("Data matches more than one schema in oneOf({{classname}})")
+        } else if match == 1 {
+                return nil // exactly one match
+        } else { // no match
+                return fmt.Errorf("Data failed to match schemas in oneOf({{classname}})")
+        }
+	{{/discriminator}}
 	{{/useOneOfDiscriminatorLookup}}
 	{{^useOneOfDiscriminatorLookup}}
 	match := 0
 	{{#oneOf}}
-	// try to unmarshal data into {{{.}}}
-	err = json.Unmarshal(data, &dst.{{{.}}})
+	// try to unmarshal data into {{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}}
+	err = newStrictDecoder(data).Decode(&dst.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}})
 	if err == nil {
-		json{{{.}}}, _ := json.Marshal(dst.{{{.}}})
-		if string(json{{{.}}}) == "{}" { // empty struct
-			dst.{{{.}}} = nil
+		json{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}}, _ := json.Marshal(dst.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}})
+		if string(json{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}}) == "{}" { // empty struct
+			dst.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}} = nil
 		} else {
 			match++
 		}
 	} else {
-		dst.{{{.}}} = nil
+		dst.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}} = nil
 	}
 
 	{{/oneOf}}
 	if match > 1 { // more than 1 match
 		// reset to nil
 		{{#oneOf}}
-		dst.{{{.}}} = nil
+		dst.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}} = nil
 		{{/oneOf}}
 
 		return fmt.Errorf("Data matches more than one schema in oneOf({{classname}})")
@@ -86,8 +118,8 @@ func (dst *{{classname}}) UnmarshalJSON(data []byte) error {
 // Marshal data from the first non-nil pointers in the struct to JSON
 func (src {{classname}}) MarshalJSON() ([]byte, error) {
 {{#oneOf}}
-	if src.{{{.}}} != nil {
-		return json.Marshal(&src.{{{.}}})
+	if src.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}} != nil {
+		return json.Marshal(&src.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}})
 	}
 
 {{/oneOf}}
@@ -96,9 +128,12 @@ func (src {{classname}}) MarshalJSON() ([]byte, error) {
 
 // Get the actual instance
 func (obj *{{classname}}) GetActualInstance() (interface{}) {
+	if obj == nil {
+		return nil
+	}
 {{#oneOf}}
-	if obj.{{{.}}} != nil {
-		return obj.{{{.}}}
+	if obj.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}} != nil {
+		return obj.{{#lambda.titlecase}}{{{.}}}{{/lambda.titlecase}}
 	}
 
 {{/oneOf}}
diff --git a/modules/openapi-generator/src/main/resources/go/model_simple.mustache b/modules/openapi-generator/src/main/resources/go/model_simple.mustache
index 97884f910b3..feeefee8875 100644
--- a/modules/openapi-generator/src/main/resources/go/model_simple.mustache
+++ b/modules/openapi-generator/src/main/resources/go/model_simple.mustache
@@ -19,7 +19,7 @@ type {{classname}} struct {
 {{#deprecated}}
 	// Deprecated
 {{/deprecated}}
-	{{name}} {{^required}}{{^isNullable}}*{{/isNullable}}{{/required}}{{{dataType}}} `json:"{{baseName}}{{^required}},omitempty{{/required}}"{{#withXml}} xml:"{{baseName}}{{#isXmlAttribute}},attr{{/isXmlAttribute}}"{{/withXml}}{{#vendorExtensions.x-go-custom-tag}} {{{.}}}{{/vendorExtensions.x-go-custom-tag}}`
+	{{name}} {{^required}}{{^isNullable}}{{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{/isNullable}}{{/required}}{{{dataType}}} `json:"{{baseName}}{{^required}},omitempty{{/required}}"{{#withXml}} xml:"{{baseName}}{{#isXmlAttribute}},attr{{/isXmlAttribute}}"{{/withXml}}{{#vendorExtensions.x-go-custom-tag}} {{{.}}}{{/vendorExtensions.x-go-custom-tag}}`
 {{/vars}}
 {{#isAdditionalPropertiesTrue}}
 	AdditionalProperties map[string]interface{}
@@ -121,20 +121,20 @@ func (o *{{classname}}) Get{{name}}() {{vendorExtensions.x-go-base-type}} {
 {{#deprecated}}
 // Deprecated
 {{/deprecated}}
-func (o *{{classname}}) Get{{name}}Ok() (*{{vendorExtensions.x-go-base-type}}, bool) {
+func (o *{{classname}}) Get{{name}}Ok() ({{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{vendorExtensions.x-go-base-type}}, bool) {
 	if o == nil {{#isNullable}}{{#vendorExtensions.x-golang-is-container}}|| o.{{name}} == nil{{/vendorExtensions.x-golang-is-container}}{{/isNullable}} {
 		return nil, false
 	}
 {{#isNullable}}
 {{#vendorExtensions.x-golang-is-container}}
-	return &o.{{name}}, true
+	return {{^isArray}}{{^isFreeFormObject}}&{{/isFreeFormObject}}{{/isArray}}o.{{name}}, true
 {{/vendorExtensions.x-golang-is-container}}
 {{^vendorExtensions.x-golang-is-container}}
 	return o.{{name}}.Get(), o.{{name}}.IsSet()
 {{/vendorExtensions.x-golang-is-container}}
 {{/isNullable}}
 {{^isNullable}}
-	return &o.{{name}}, true
+	return {{^isArray}}{{^isFreeFormObject}}&{{/isFreeFormObject}}{{/isArray}}o.{{name}}, true
 {{/isNullable}}
 }
 
@@ -176,7 +176,7 @@ func (o *{{classname}}) Get{{name}}() {{vendorExtensions.x-go-base-type}} {
 {{/vendorExtensions.x-golang-is-container}}
 {{/isNullable}}
 {{^isNullable}}
-	return *o.{{name}}
+	return {{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}o.{{name}}
 {{/isNullable}}
 }
 
@@ -188,13 +188,13 @@ func (o *{{classname}}) Get{{name}}() {{vendorExtensions.x-go-base-type}} {
 {{#deprecated}}
 // Deprecated
 {{/deprecated}}
-func (o *{{classname}}) Get{{name}}Ok() (*{{vendorExtensions.x-go-base-type}}, bool) {
+func (o *{{classname}}) Get{{name}}Ok() ({{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{vendorExtensions.x-go-base-type}}, bool) {
 	if o == nil {{^isNullable}}|| o.{{name}} == nil{{/isNullable}}{{#isNullable}}{{#vendorExtensions.x-golang-is-container}}|| o.{{name}} == nil{{/vendorExtensions.x-golang-is-container}}{{/isNullable}} {
 		return nil, false
 	}
 {{#isNullable}}
 {{#vendorExtensions.x-golang-is-container}}
-	return &o.{{name}}, true
+	return {{^isArray}}{{^isFreeFormObject}}&{{/isFreeFormObject}}{{/isArray}}o.{{name}}, true
 {{/vendorExtensions.x-golang-is-container}}
 {{^vendorExtensions.x-golang-is-container}}
 	return o.{{name}}.Get(), o.{{name}}.IsSet()
@@ -224,11 +224,11 @@ func (o *{{classname}}) Set{{name}}(v {{vendorExtensions.x-go-base-type}}) {
 	o.{{name}} = v
 {{/vendorExtensions.x-golang-is-container}}
 {{^vendorExtensions.x-golang-is-container}}
-	o.{{name}}.Set(&v)
+	o.{{name}}.Set({{^isArray}}{{^isFreeFormObject}}&{{/isFreeFormObject}}{{/isArray}}v)
 {{/vendorExtensions.x-golang-is-container}}
 {{/isNullable}}
 {{^isNullable}}
-	o.{{name}} = &v
+	o.{{name}} = {{^isArray}}{{^isFreeFormObject}}&{{/isFreeFormObject}}{{/isArray}}v
 {{/isNullable}}
 }
 {{#isNullable}}
diff --git a/modules/openapi-generator/src/main/resources/go/nullable_model.mustache b/modules/openapi-generator/src/main/resources/go/nullable_model.mustache
index 20d35769130..7b60ce6d3a1 100644
--- a/modules/openapi-generator/src/main/resources/go/nullable_model.mustache
+++ b/modules/openapi-generator/src/main/resources/go/nullable_model.mustache
@@ -1,13 +1,13 @@
 type Nullable{{{classname}}} struct {
-	value *{{{classname}}}
+	value {{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{{classname}}}
 	isSet bool
 }
 
-func (v Nullable{{classname}}) Get() *{{classname}} {
+func (v Nullable{{classname}}) Get() {{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{classname}} {
 	return v.value
 }
 
-func (v *Nullable{{classname}}) Set(val *{{classname}}) {
+func (v *Nullable{{classname}}) Set(val {{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{classname}}) {
 	v.value = val
 	v.isSet = true
 }
@@ -21,7 +21,7 @@ func (v *Nullable{{classname}}) Unset() {
 	v.isSet = false
 }
 
-func NewNullable{{classname}}(val *{{classname}}) *Nullable{{classname}} {
+func NewNullable{{classname}}(val {{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{classname}}) *Nullable{{classname}} {
 	return &Nullable{{classname}}{value: val, isSet: true}
 }
 
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/README.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/README.mustache
new file mode 100644
index 00000000000..e20452e8492
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/README.mustache
@@ -0,0 +1,7 @@
+# OpenAPI generated server
+
+Apache Camel Server
+
+```bash
+mvn clean test
+```
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/api.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/api.mustache
new file mode 100644
index 00000000000..6e6e769904f
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/api.mustache
@@ -0,0 +1,95 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package {{apiPackage}};
+
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.model.rest.RestParamType;
+import org.springframework.stereotype.Component;
+import {{modelPackage}}.*;
+import org.apache.camel.model.rest.RestBindingMode;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class {{classname}} extends RouteBuilder {
+
+    @Override
+    public void configure() throws Exception {
+        {{#performBeanValidation}}
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("{{camelValidationErrorProcessor}}");
+        {{/performBeanValidation}}
+        {{#operations}}{{#operation}}
+
+        /**
+        {{httpMethod}} {{{path}}}{{#summary}} : {{.}}{{/summary}}
+        **/
+        rest(){{#camelSecurityDefinitions}}{{#hasAuthMethods}}
+            .securityDefinitions(){{#authMethods}}{{#isOAuth}}
+                .oauth2("{{name}}"){{#flow}}
+                    .flow("{{flow}}"){{/flow}}{{#tokenUrl}}
+                    .tokenUrl("{{tokenUrl}}"){{/tokenUrl}}{{#authorizationUrl}}
+                    .authorizationUrl("{{authorizationUrl}}"){{/authorizationUrl}}{{#refreshUrl}}
+                    .refreshUrl("{{refreshUrl}}"){{/refreshUrl}}{{#scopes}}
+                        .withScope("{{scope}}"{{#description}},"{{{.}}}"{{/description}}){{/scopes}}
+                {{^-last}}.end(){{/-last}}{{#-last}}
+            .endSecurityDefinition(){{/-last}}{{/isOAuth}}{{#isApiKey}}
+                .apiKey("{{name}}"){{#isKeyInHeader}}
+                    .withHeader("{{name}}"){{/isKeyInHeader}}{{#isKeyInQuery}}
+                    .withQuery("{{name}}").{{/isKeyInQuery}}{{#isKeyInCookie}}
+                    .withCookie("{{name}}").{{/isKeyInCookie}}
+                {{^-last}}.end(){{/-last}}{{#-last}}
+            .endSecurityDefinition(){{/-last}}{{/isApiKey}}{{#isBasic}}{{#isBasicBasic}}
+                .basicAuth("{{name}}"){{#-last}}.end(){{/-last}}{{/isBasicBasic}}{{#isBasicBearer}}
+                .bearerToken("{{name}}"{{#bearerFormat}}, "{{bearerFormat}}"{{/bearerFormat}}){{#-last}}.end(){{/-last}}{{/isBasicBearer}}{{/isBasic}}{{/authMethods}}{{/hasAuthMethods}}{{/camelSecurityDefinitions}}
+            .{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}("{{path}}")
+                .description("{{#summary}}{{{.}}}{{/summary}}")
+                .id("{{operationId}}Api"){{#vendorExtensions}}{{#camelRestBindingMode}}
+                .clientRequestValidation(false)
+                .bindingMode(RestBindingMode.off){{/camelRestBindingMode}}{{/vendorExtensions}}{{#hasProduces}}
+                .produces("{{#produces}}{{{mediaType}}}{{^-last}}, {{/-last}}{{/produces}}"){{^isArray}}{{^isMap}}{{^isPrimitiveType}}
+                .outType({{returnType}}.class){{/isPrimitiveType}}{{/isMap}}{{/isArray}}{{#isArray}}
+                .outType({{returnBaseType}}[].class){{/isArray}}{{/hasProduces}}{{#hasConsumes}}
+                .consumes("{{#consumes}}{{{mediaType}}}{{^-last}}, {{/-last}}{{/consumes}}"){{#bodyParams}}{{^isArray}}{{^isMap}}{{^isPrimitiveType}}
+                .type({{baseType}}.class){{/isPrimitiveType}}{{/isMap}}{{/isArray}}{{#isArray}}
+                .type({{baseType}}[].class){{/isArray}}{{/bodyParams}}
+                {{/hasConsumes}}{{#pathParams}}
+                .param()
+                    .name("{{paramName}}")
+                    .type(RestParamType.path)
+                    .required({{required}}){{#description}}
+                    .description("{{{.}}}"){{/description}}
+                .endParam(){{/pathParams}}{{#queryParams}}
+                .param()
+                    .name("{{paramName}}")
+                    .type(RestParamType.query)
+                    .required({{required}}){{#description}}
+                    .description("{{{.}}}"){{/description}}
+                .endParam(){{/queryParams}}{{#headerParams}}
+                .param()
+                    .name("{{paramName}}")
+                    .type(RestParamType.header)
+                    .required({{required}}){{#description}}
+                    .description("{{{.}}}"){{/description}}
+                .endParam(){{/headerParams}}{{#bodyParams}}
+                .param()
+                    .name("{{paramName}}")
+                    .type(RestParamType.body)
+                    .required({{required}}){{#description}}
+                    .description("{{{.}}}"){{/description}}
+                .endParam(){{/bodyParams}}{{#formParams}}
+                .param()
+                    .name("{{paramName}}")
+                    .type(RestParamType.formData)
+                    .required({{required}}){{#description}}
+                    .description("{{{.}}}"){{/description}}
+                .endParam(){{/formParams}}{{#performBeanValidation}}
+                .to("direct:validate-{{operationId}}");{{/performBeanValidation}}{{^performBeanValidation}}
+                .to("direct:{{operationId}}");{{/performBeanValidation}}
+        {{/operation}}{{/operations}}
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/application.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/application.mustache
new file mode 100644
index 00000000000..1975bd19530
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/application.mustache
@@ -0,0 +1,8 @@
+# NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+# https://openapi-generator.tech
+# Do not edit the class manually.
+
+camel.springboot.name=camel-{{artifactId}}
+camel.servlet.mapping.context-path=/api/v1/*
+
+server.port=8080
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/errorProcessor.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/errorProcessor.mustache
new file mode 100644
index 00000000000..0df67de43bb
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/errorProcessor.mustache
@@ -0,0 +1,33 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package {{basePackage}};
+
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+import org.apache.camel.component.bean.validator.BeanValidationException;
+import org.springframework.stereotype.Component;
+{{#jackson}}
+import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;{{/jackson}}
+
+@Component("{{camelValidationErrorProcessor}}")
+public class ValidationErrorProcessor implements Processor {
+
+    @Override
+    public void process(Exchange exchange) throws Exception {
+        Exception fault = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Exception.class);
+        int httpStatusCode = 500;
+        if (fault instanceof BeanValidationException) {
+            httpStatusCode = 400;
+        }
+        {{#jackson}}
+        if (fault instanceof UnrecognizedPropertyException) {
+            httpStatusCode = 400;
+        }
+        {{/jackson}}
+        exchange.getIn().setHeader(Exchange.HTTP_RESPONSE_CODE, httpStatusCode);
+        exchange.getIn().setBody(fault.getMessage());
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/exampleString.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/exampleString.mustache
new file mode 100644
index 00000000000..1f72a330ef6
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/exampleString.mustache
@@ -0,0 +1 @@
+{{#lambdaSplitString}}{{#lambdaRemoveLineBreak}}{{#lambdaEscapeDoubleQuote}}{{#lambdaTrimWhitespace}}{{{example}}}{{/lambdaTrimWhitespace}}{{/lambdaEscapeDoubleQuote}}{{/lambdaRemoveLineBreak}}{{/lambdaSplitString}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/exampleStringArray.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/exampleStringArray.mustache
new file mode 100644
index 00000000000..99e5f81bdb8
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/exampleStringArray.mustache
@@ -0,0 +1 @@
+{{#lambdaSplitString}}{{#lambdaRemoveLineBreak}}{{#lambdaEscapeDoubleQuote}}{{#lambdaTrimWhitespace}}[{{{example}}}]{{/lambdaTrimWhitespace}}{{/lambdaEscapeDoubleQuote}}{{/lambdaRemoveLineBreak}}{{/lambdaSplitString}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/pom.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/pom.mustache
new file mode 100644
index 00000000000..d7c006cc40c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/pom.mustache
@@ -0,0 +1,193 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!--
+NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+https://openapi-generator.tech
+Do not edit the class manually.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>{{groupId}}</groupId>
+    <artifactId>{{artifactId}}</artifactId>
+    <packaging>jar</packaging>
+    <name>{{artifactId}}</name>
+    <version>{{artifactVersion}}</version>
+
+    <scm>
+        <connection>{{scmConnection}}</connection>
+        <developerConnection>{{scmDeveloperConnection}}</developerConnection>
+        <url>{{scmUrl}}</url>
+    </scm>
+
+    <licenses>
+        <license>
+            <name>{{licenseName}}</name>
+            <url>{{licenseUrl}}</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <developers>
+        <developer>
+            <name>{{developerName}}</name>
+            <email>{{developerEmail}}</email>
+            <organization>{{developerOrganization}}</organization>
+            <organizationUrl>{{developerOrganizationUrl}}</organizationUrl>
+        </developer>
+    </developers>
+
+    <properties>
+        <org.springframework.boot.version>2.6.2</org.springframework.boot.version>
+        <org.apache.camel.version>3.14.0</org.apache.camel.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.camel</groupId>
+                <artifactId>camel-bom</artifactId>
+                <version>${org.apache.camel.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.camel.springboot</groupId>
+                <artifactId>camel-spring-boot-bom</artifactId>
+                <version>${org.apache.camel.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${org.springframework.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>2.22.2</version>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.camel.springboot</groupId>
+            <artifactId>camel-spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.camel.springboot</groupId>
+            <artifactId>camel-servlet-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.openapitools</groupId>
+            <artifactId>jackson-databind-nullable</artifactId>
+            <version>0.2.1</version>
+        </dependency>
+        <dependency>
+            <groupId>io.swagger</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>1.6.3</version>
+        </dependency>
+        {{#oas3}}
+        <dependency>
+            <groupId>io.swagger.core.v3</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>2.1.11</version>
+        </dependency>
+        {{/oas3}}
+        {{#jackson}}
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+            <version>2.13.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jdk8</artifactId>
+            <version>2.13.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-jackson</artifactId>
+        </dependency>
+        {{#withXml}}
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-jacksonxml</artifactId>
+        </dependency>
+        {{/withXml}}{{/jackson}}
+        {{#withXml}}
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-jaxb</artifactId>
+        </dependency>
+        {{/withXml}}
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-direct</artifactId>
+        </dependency>
+
+        {{#useBeanValidation}}
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-bean-validator</artifactId>
+        </dependency>
+        {{/useBeanValidation}}
+
+        <!-- Test dependencies -->
+        <dependency>
+            <groupId>com.mashape.unirest</groupId>
+            <artifactId>unirest-java</artifactId>
+            <version>1.4.9</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-test-spring-junit5</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/restConfiguration.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/restConfiguration.mustache
new file mode 100644
index 00000000000..44af274af40
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/restConfiguration.mustache
@@ -0,0 +1,22 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package {{apiPackage}};
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.model.rest.RestBindingMode;
+
+@Component
+public class RestConfiguration extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        restConfiguration()
+            .component("{{camelRestComponent}}")
+            .bindingMode(RestBindingMode.{{camelRestBindingMode}}){{#camelDataformatProperties}}
+                .dataFormatProperty("{{key}}", "{{value}}"){{/camelDataformatProperties}}
+            .clientRequestValidation({{camelRestClientRequestValidation}});
+    }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/routesImpl.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/routesImpl.mustache
new file mode 100644
index 00000000000..427aa3021d7
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/routesImpl.mustache
@@ -0,0 +1,34 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package {{apiPackage}};
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+import {{modelPackage}}.*;
+import org.apache.camel.model.dataformat.JsonLibrary;
+
+@Component
+public class {{classname}}RoutesImpl extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        {{#operations}}{{#operation}}
+        /**
+        {{httpMethod}} {{{path}}}{{#summary}} : {{.}}{{/summary}}
+        **/
+        from("direct:{{operationId}}")
+            .id("{{operationId}}")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}"){{#hasProduces}}{{#examples}}{{#-first}}{{^isArray}}{{^isMap}}{{^isPrimitiveType}}
+            .setBody(constant({{>exampleString}}))
+            .unmarshal().json(JsonLibrary.Jackson, {{returnType}}.class){{/isPrimitiveType}}{{/isMap}}{{/isArray}}{{#isArray}}
+            .setBody(constant({{>exampleStringArray}}))
+            .unmarshal().json(JsonLibrary.Jackson, {{returnBaseType}}[].class){{/isArray}}{{/-first}}{{/examples}}{{/hasProduces}};{{/operation}}{{/operations}}
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/test.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/test.mustache
new file mode 100644
index 00000000000..677f0e522ac
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/test.mustache
@@ -0,0 +1,63 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package {{apiPackage}};
+
+import org.junit.jupiter.api.Test;
+import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest;
+import com.mashape.unirest.request.HttpRequest;
+import com.mashape.unirest.request.HttpRequestWithBody;
+import com.mashape.unirest.http.Unirest;
+import com.mashape.unirest.http.JsonNode;
+import com.mashape.unirest.http.HttpResponse;
+import java.io.InputStream;
+import org.junit.jupiter.api.Assertions;
+
+@CamelSpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
+public class {{classname}}Test {
+    private static final String API_URL = "http://127.0.0.1:8080/api/v1";
+{{#operations}}{{#operation}}{{#examples}}{{#-first}}{{#vendorExtensions}}{{^camelRestBindingMode}}
+    @Test
+    public void {{operationId}}TestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "{{path}}";
+        HttpRequest httpRequest = Unirest.{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}(url);{{#hasConsumes}}
+        httpRequest = httpRequest.header("Content-Type", contentType);{{/hasConsumes}}{{#hasProduces}}
+        httpRequest = httpRequest.header("Accept", accept);{{/hasProduces}}{{#pathParams}}
+        httpRequest = httpRequest.routeParam("{{paramName}}", "1");{{/pathParams}}{{#queryParams}}
+        httpRequest = httpRequest.queryString("{{paramName}}", "1");{{/queryParams}}
+        {{#hasConsumes}}{{#examples}}{{#-first}}
+        String requestBody = {{>exampleString}};
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        {{/-first}}{{/examples}}{{/hasConsumes}}
+        {{#hasProduces}}{{#produces}}{{#isJson}}
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();{{/isJson}}{{/produces}}{{/hasProduces}}{{^hasProduces}}
+        HttpResponse<InputStream> httpResponse = httpRequest.asBinary();{{/hasProduces}}
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    {{#examples}}{{#-last}}{{^isArray}}
+    @Test
+    public void {{operationId}}TestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "{{path}}";
+        HttpRequest httpRequest = Unirest.{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}(url);{{#hasConsumes}}
+        httpRequest = httpRequest.header("Content-Type", contentType);{{/hasConsumes}}{{#hasProduces}}
+        httpRequest = httpRequest.header("Accept", accept);{{/hasProduces}}{{#pathParams}}
+        httpRequest = httpRequest.routeParam("{{paramName}}", "1");{{/pathParams}}{{#queryParams}}
+        httpRequest = httpRequest.queryString("{{paramName}}", "1");{{/queryParams}}
+        {{#hasConsumes}}{{#examples}}{{^-first}}
+        String requestBody = {{>exampleString}};
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        {{/-first}}{{/examples}}{{/hasConsumes}}
+        {{#hasProduces}}{{#produces}}{{#isXml}}
+        HttpResponse<String> httpResponse = httpRequest.asString();{{/isXml}}{{/produces}}{{/hasProduces}}{{^hasProduces}}
+        HttpResponse<InputStream> httpResponse = httpRequest.asBinary();{{/hasProduces}}
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }{{/isArray}}{{/-last}}{{/examples}}{{/camelRestBindingMode}}{{/vendorExtensions}}{{/-first}}{{/examples}}{{/operation}}{{/operations}}
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-camel-server/validation.mustache b/modules/openapi-generator/src/main/resources/java-camel-server/validation.mustache
new file mode 100644
index 00000000000..27aa2ce4ec7
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-camel-server/validation.mustache
@@ -0,0 +1,28 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) ({{{generatorVersion}}}).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package {{apiPackage}};
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class {{classname}}Validator extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("{{camelValidationErrorProcessor}}");
+        {{#operations}}{{#operation}}
+        from("direct:validate-{{operationId}}")
+            .id("validate-{{operationId}}"){{#hasConsumes}}
+            .to("bean-validator://validate-request"){{/hasConsumes}}
+            .to("direct:{{operationId}}"){{^hasProduces}};{{/hasProduces}}{{#hasProduces}}
+            .to("bean-validator://validate-response");{{/hasProduces}}
+        {{/operation}}{{/operations}}
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/api.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/api.mustache
deleted file mode 100644
index 4232340e520..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/api.mustache
+++ /dev/null
@@ -1,70 +0,0 @@
-{{>licenseInfo}}
-package {{package}};
-
-import io.micronaut.http.annotation.*;
-import io.micronaut.core.annotation.*;
-import io.micronaut.http.client.annotation.Client;
-{{#configureAuth}}
-import {{invokerPackage}}.auth.Authorization;
-{{/configureAuth}}
-import {{invokerPackage}}.query.QueryParam;
-import io.micronaut.core.convert.format.Format;
-import reactor.core.publisher.Mono;
-{{#imports}}import {{import}};
-{{/imports}}
-import javax.annotation.Generated;
-{{^fullJavaUtil}}
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-{{/fullJavaUtil}}{{#useBeanValidation}}
-import javax.validation.Valid;
-import javax.validation.constraints.*;
-{{/useBeanValidation}}
-
-{{>generatedAnnotation}}
-@Client("${base-path}")
-public interface {{classname}} {
-{{#operations}}{{#operation}}
-  /**
-    {{#summary}}
-   * {{summary}}
-    {{/summary}}
-    {{#notes}}
-   * {{notes}}
-    {{/notes}}
-    {{^summary}}
-        {{^notes}}
-   * {{nickname}}
-        {{/notes}}
-    {{/summary}}
-   *
-{{#allParams}}
-   * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
-{{/allParams}}
-{{#returnType}}
-   * @return {{returnType}}
-{{/returnType}}
-{{#externalDocs}}
-   * {{description}}
-   * @see <a href="{{url}}">{{summary}} Documentation</a>
-{{/externalDocs}}
-   */
-  @{{#lambda.pascalcase}}{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}{{/lambda.pascalcase}}(uri="{{{path}}}")
-  {{#vendorExtensions.x-contentType}}
-  @Produces(value={"{{vendorExtensions.x-contentType}}"})
-  {{/vendorExtensions.x-contentType}}
-  @Consumes(value={"{{vendorExtensions.x-accepts}}"})
-  {{!auth methods}}
-  {{#configureAuth}}
-      {{#authMethods}}
-  @Authorization(name="{{{name}}}"{{!scopes}}{{#isOAuth}}, scopes={{=< >=}}{<={{ }}=>{{#scopes}}"{{{scope}}}"{{^-last}}, {{/-last}}{{/scopes}}{{=< >=}}}<={{ }}=>{{/isOAuth}})
-      {{/authMethods}}
-  {{/configureAuth}}
-  {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} {{nickname}}({{^allParams}});{{/allParams}}{{#allParams}}
-        {{>params/queryParams}}{{>params/pathParams}}{{>params/headerParams}}{{>params/bodyParams}}{{>params/formParams}}{{>params/cookieParams}}{{^-last}}, {{/-last}}{{#-last}}
-  );{{/-last}}{{/allParams}}
-  {{/operation}}
-{{/operations}}
-}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/gradle.properties.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/gradle.properties.mustache
deleted file mode 100644
index 4804e049014..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/gradle.properties.mustache
+++ /dev/null
@@ -1 +0,0 @@
-micronautVersion=3.0.0-M5
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/model_doc.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/model_doc.mustache
deleted file mode 100644
index 3f14f653581..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/model_doc.mustache
+++ /dev/null
@@ -1,4 +0,0 @@
-{{#models}}{{#model}}
-
-{{#isEnum}}{{>doc/enum_outer_doc}}{{/isEnum}}{{^isEnum}}{{>doc/pojo_doc}}{{/isEnum}}
-{{/model}}{{/models}}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/beanValidation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/model/beanValidation.mustache
deleted file mode 100644
index bbc797247ea..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/beanValidation.mustache
+++ /dev/null
@@ -1,52 +0,0 @@
-{{#useBeanValidation}}{{!
-validate all pojos and enums
-}}{{^isContainer}}{{#isModel}}  @Valid
-{{/isModel}}{{/isContainer}}{{!
-nullable & nonnull
-}}{{#required}}{{#isNullable}}  @Nullable
-{{/isNullable}}{{^isNullable}}  @NotNull
-{{/isNullable}}{{/required}}{{^required}}  @Nullable
-{{/required}}{{!
-pattern
-}}{{#pattern}}{{^isByteArray}}  @Pattern(regexp="{{{pattern}}}")
-{{/isByteArray}}{{/pattern}}{{!
-both minLength && maxLength
-}}{{#minLength}}{{#maxLength}}  @Size(min={{minLength}}, max={{maxLength}})
-{{/maxLength}}{{/minLength}}{{!
-just minLength
-}}{{#minLength}}{{^maxLength}}  @Size(min={{minLength}})
-{{/maxLength}}{{/minLength}}{{!
-just maxLength
-}}{{^minLength}}{{#maxLength}}  @Size(max={{maxLength}})
-{{/maxLength}}{{/minLength}}{{!
-@Size: both minItems && maxItems
-}}{{#minItems}}{{#maxItems}}  @Size(min={{minItems}}, max={{maxItems}})
-{{/maxItems}}{{/minItems}}{{!
-@Size: just minItems
-}}{{#minItems}}{{^maxItems}}  @Size(min={{minItems}})
-{{/maxItems}}{{/minItems}}{{!
-@Size: just maxItems
-}}{{^minItems}}{{#maxItems}}  @Size(max={{maxItems}})
-{{/maxItems}}{{/minItems}}{{!
-@Email
-}}{{#isEmail}}  @Email
-{{/isEmail}}{{!
-check for integer or long / all others=decimal type with @Decimal*
-isInteger set
-}}{{#isInteger}}{{#minimum}}  @Min({{minimum}})
-{{/minimum}}{{#maximum}}  @Max({{maximum}})
-{{/maximum}}{{/isInteger}}{{!
-isLong set
-}}{{#isLong}}{{#minimum}}  @Min({{minimum}}L)
-{{/minimum}}{{#maximum}}  @Max({{maximum}}L)
-{{/maximum}}{{/isLong}}{{!
-Not Integer, not Long => we have a decimal value!
-}}{{^isInteger}}{{^isLong}}{{!
-minimum for decimal value
-}}{{#minimum}}  @DecimalMin({{#exclusiveMinimum}}value={{/exclusiveMinimum}}"{{minimum}}"{{#exclusiveMinimum}}, inclusive=false{{/exclusiveMinimum}})
-{{/minimum}}{{!
-maximal for decimal value
-}}{{#maximum}}  @DecimalMax({{#exclusiveMaximum}}value={{/exclusiveMaximum}}"{{maximum}}"{{#exclusiveMaximum}}, inclusive=false{{/exclusiveMaximum}})
-{{/maximum}}{{!
-close decimal values
-}}{{/isLong}}{{/isInteger}}{{/useBeanValidation}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/jackson_annotations.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/model/jackson_annotations.mustache
deleted file mode 100644
index b7f047ee540..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/jackson_annotations.mustache
+++ /dev/null
@@ -1,26 +0,0 @@
-{{!
- If this is map and items are nullable, make sure that nulls are included.
- To determine what JsonInclude.Include method to use, consider the following:
- * If the field is required, always include it, even if it is null.
- * Else use custom behaviour, IOW use whatever is defined on the object mapper
- }}
-  @JsonProperty(JSON_PROPERTY_{{nameInSnakeCase}})
-  @JsonInclude({{#isMap}}{{#items.isNullable}}content = JsonInclude.Include.ALWAYS, {{/items.isNullable}}{{/isMap}}value = JsonInclude.Include.{{#required}}ALWAYS{{/required}}{{^required}}USE_DEFAULTS{{/required}})
-    {{#withXml}}
-        {{^isContainer}}
-  @JacksonXmlProperty({{#isXmlAttribute}}isAttribute = true, {{/isXmlAttribute}}{{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}localName = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
-  @JacksonXmlProperty({{#isXmlAttribute}}isAttribute = true, {{/isXmlAttribute}}{{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}localName = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
-        {{/isContainer}}
-        {{#isContainer}}
-            {{#isXmlWrapped}}
-  // items.xmlName={{items.xmlName}}
-  @JacksonXmlElementWrapper(useWrapping = {{isXmlWrapped}}, {{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}localName = "{{#items.xmlName}}{{items.xmlName}}{{/items.xmlName}}{{^items.xmlName}}{{items.baseName}}{{/items.xmlName}}")
-            {{/isXmlWrapped}}
-        {{/isContainer}}
-    {{/withXml}}
-    {{#isDateTime}}
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-    {{/isDateTime}}
-    {{#isDate}}
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
-    {{/isDate}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/modelEnum.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/model/modelEnum.mustache
deleted file mode 100644
index 3bb6622f08d..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/modelEnum.mustache
+++ /dev/null
@@ -1,61 +0,0 @@
-{{#jackson}}
-import com.fasterxml.jackson.annotation.JsonCreator;
-import com.fasterxml.jackson.annotation.JsonValue;
-{{/jackson}}
-
-/**
- * {{^description}}Gets or Sets {{{name}}}{{/description}}{{#description}}{{description}}{{/description}}
- */
-{{#additionalEnumTypeAnnotations}}
-{{{.}}}
-{{/additionalEnumTypeAnnotations}}{{#useBeanValidation}}@Introspected
-{{/useBeanValidation}}public enum {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} {
-    {{#allowableValues}}
-        {{#enumVars}}
-            {{#enumDescription}}
-  /**
-   * {{enumDescription}}
-   */
-            {{/enumDescription}}
-            {{#withXml}}
-  @XmlEnumValue({{#isInteger}}"{{/isInteger}}{{#isDouble}}"{{/isDouble}}{{#isLong}}"{{/isLong}}{{#isFloat}}"{{/isFloat}}{{{value}}}{{#isInteger}}"{{/isInteger}}{{#isDouble}}"{{/isDouble}}{{#isLong}}"{{/isLong}}{{#isFloat}}"{{/isFloat}})
-            {{/withXml}}
-  {{{name}}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
-        {{/enumVars}}
-    {{/allowableValues}}
-
-  private {{{dataType}}} value;
-
-  {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}({{{dataType}}} value) {
-    this.value = value;
-  }
-
-    {{#jackson}}
-  @JsonValue
-    {{/jackson}}
-  public {{{dataType}}} getValue() {
-    return value;
-  }
-
-  @Override
-  public String toString() {
-    return String.valueOf(value);
-  }
-
-    {{#jackson}}
-  @JsonCreator
-    {{/jackson}}
-  public static {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} fromValue({{{dataType}}} value) {
-    for ({{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} b : {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}.values()) {
-      if (b.value.equals(value)) {
-        return b;
-      }
-    }
-    {{#isNullable}}
-    return null;
-    {{/isNullable}}
-    {{^isNullable}}
-    throw new IllegalArgumentException("Unexpected value '" + value + "'");
-    {{/isNullable}}
-  }
-}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/pojo.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/model/pojo.mustache
deleted file mode 100644
index e643ca051cd..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/pojo.mustache
+++ /dev/null
@@ -1,332 +0,0 @@
-/**
- * {{#description}}{{.}}{{/description}}{{^description}}{{classname}}{{/description}}
- */
-{{#description}}
-@ApiModel(description = "{{{description}}}")
-{{/description}}
-{{#jackson}}
-@JsonPropertyOrder({
-  {{#vars}}
-  {{classname}}.JSON_PROPERTY_{{nameInSnakeCase}}{{^-last}},{{/-last}}
-  {{/vars}}
-})
-@JsonTypeName("{{name}}")
-{{/jackson}}
-{{#additionalModelTypeAnnotations}}
-{{{.}}}
-{{/additionalModelTypeAnnotations}}
-{{>generatedAnnotation}}{{#discriminator}}{{>model/typeInfoAnnotation}}{{/discriminator}}{{>model/xmlAnnotation}}{{#useBeanValidation}}
-@Introspected
-{{/useBeanValidation}}{{!
-Declare the class with extends and implements
-}}public class {{classname}} {{#parent}}extends {{{parent}}} {{/parent}}{{#vendorExtensions.x-implements}}{{#-first}}implements {{{.}}}{{/-first}}{{^-first}}, {{{.}}}{{/-first}}{{#-last}} {{/-last}}{{/vendorExtensions.x-implements}}{
-    {{#serializableModel}}
-  private static final long serialVersionUID = 1L;
-
-    {{/serializableModel}}
-    {{#vars}}
-        {{#isEnum}}
-            {{^isContainer}}
-{{>model/modelInnerEnum}}
-            {{/isContainer}}
-            {{#isContainer}}
-                {{#mostInnerItems}}
-{{>model/modelInnerEnum}}
-                {{/mostInnerItems}}
-            {{/isContainer}}
-        {{/isEnum}}
-  public static final String JSON_PROPERTY_{{nameInSnakeCase}} = "{{baseName}}";
-        {{#withXml}}
-            {{#isXmlAttribute}}
-  @XmlAttribute(name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}"
-            {{/isXmlAttribute}}
-            {{^isXmlAttribute}}
-                {{^isContainer}}
-  @XmlElement({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
-                {{/isContainer}}
-                {{#isContainer}}
-  // Is a container wrapped={{isXmlWrapped}}
-                    {{#items}}
-  // items.name={{name}} items.baseName={{baseName}} items.xmlName={{xmlName}} items.xmlNamespace={{xmlNamespace}}
-  // items.example={{example}} items.type={{dataType}}
-  @XmlElement({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
-                    {{/items}}
-                    {{#isXmlWrapped}}
-  @XmlElementWrapper({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
-                    {{/isXmlWrapped}}
-                {{/isContainer}}
-            {{/isXmlAttribute}}
-        {{/withXml}}
-        {{#vendorExtensions.x-is-jackson-optional-nullable}}
-            {{#isContainer}}
-  private JsonNullable<{{{datatypeWithEnum}}}> {{name}} = JsonNullable.<{{{datatypeWithEnum}}}>undefined();
-            {{/isContainer}}
-            {{^isContainer}}
-  private JsonNullable<{{{datatypeWithEnum}}}> {{name}} = JsonNullable.<{{{datatypeWithEnum}}}>{{#defaultValue}}of({{{.}}}){{/defaultValue}}{{^defaultValue}}undefined(){{/defaultValue}};
-            {{/isContainer}}
-        {{/vendorExtensions.x-is-jackson-optional-nullable}}
-        {{^vendorExtensions.x-is-jackson-optional-nullable}}
-            {{#isContainer}}
-  private {{{datatypeWithEnum}}} {{name}}{{#required}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{/required}}{{^required}} = null{{/required}};
-            {{/isContainer}}
-            {{^isContainer}}
-  {{#isDiscriminator}}protected{{/isDiscriminator}}{{^isDiscriminator}}private{{/isDiscriminator}} {{{datatypeWithEnum}}} {{name}}{{#defaultValue}} = {{{.}}}{{/defaultValue}};
-            {{/isContainer}}
-        {{/vendorExtensions.x-is-jackson-optional-nullable}}
-
-    {{/vars}}
-    {{#parcelableModel}}
-  public {{classname}}() {
-        {{#parent}}
-    super();
-        {{/parent}}
-  }
-
-    {{/parcelableModel}}
-    {{#vars}}
-        {{^isReadOnly}}
-  public {{classname}} {{name}}({{{datatypeWithEnum}}} {{name}}) {
-            {{#vendorExtensions.x-is-jackson-optional-nullable}}
-    this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{name}});
-            {{/vendorExtensions.x-is-jackson-optional-nullable}}
-            {{^vendorExtensions.x-is-jackson-optional-nullable}}
-    this.{{name}} = {{name}};
-            {{/vendorExtensions.x-is-jackson-optional-nullable}}
-    return this;
-  }
-
-            {{#isArray}}
-  public {{classname}} add{{nameInCamelCase}}Item({{{items.datatypeWithEnum}}} {{name}}Item) {
-                {{#vendorExtensions.x-is-jackson-optional-nullable}}
-    if (this.{{name}} == null || !this.{{name}}.isPresent()) {
-      this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{{defaultValue}}});
-    }
-    try {
-      this.{{name}}.get().add({{name}}Item);
-    } catch (java.util.NoSuchElementException e) {
-      // this can never happen, as we make sure above that the value is present
-    }
-    return this;
-                {{/vendorExtensions.x-is-jackson-optional-nullable}}
-                {{^vendorExtensions.x-is-jackson-optional-nullable}}
-                    {{^required}}
-    if (this.{{name}} == null) {
-      this.{{name}} = {{{defaultValue}}};
-    }
-                    {{/required}}
-    this.{{name}}.add({{name}}Item);
-    return this;
-                {{/vendorExtensions.x-is-jackson-optional-nullable}}
-  }
-
-            {{/isArray}}
-            {{#isMap}}
-  public {{classname}} put{{nameInCamelCase}}Item(String key, {{{items.datatypeWithEnum}}} {{name}}Item) {
-                {{#vendorExtensions.x-is-jackson-optional-nullable}}
-    if (this.{{name}} == null || !this.{{name}}.isPresent()) {
-      this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{{defaultValue}}});
-    }
-    try {
-      this.{{name}}.get().put(key, {{name}}Item);
-    } catch (java.util.NoSuchElementException e) {
-      // this can never happen, as we make sure above that the value is present
-    }
-    return this;
-                {{/vendorExtensions.x-is-jackson-optional-nullable}}
-                {{^vendorExtensions.x-is-jackson-optional-nullable}}
-                    {{^required}}
-    if (this.{{name}} == null) {
-      this.{{name}} = {{{defaultValue}}};
-    }
-                    {{/required}}
-    this.{{name}}.put(key, {{name}}Item);
-    return this;
-                {{/vendorExtensions.x-is-jackson-optional-nullable}}
-  }
-
-            {{/isMap}}
-        {{/isReadOnly}}
-  /**
-  {{#description}}
-   * {{description}}
-  {{/description}}
-  {{^description}}
-   * Get {{name}}
-  {{/description}}
-  {{#minimum}}
-   * minimum: {{minimum}}
-  {{/minimum}}
-  {{#maximum}}
-   * maximum: {{maximum}}
-  {{/maximum}}
-   * @return {{name}}
-   **/
-{{>model/beanValidation}}  @ApiModelProperty({{#example}}example = "{{{example}}}", {{/example}}{{#required}}required = {{required}}, {{/required}}value = "{{{description}}}")
-        {{#vendorExtensions.x-extra-annotation}}
-  {{{vendorExtensions.x-extra-annotation}}}
-        {{/vendorExtensions.x-extra-annotation}}
-        {{#vendorExtensions.x-is-jackson-optional-nullable}}
-{{!unannotated, Jackson would pick this up automatically and add it *in addition* to the _JsonNullable getter field}}  @JsonIgnore
-        {{/vendorExtensions.x-is-jackson-optional-nullable}}
-        {{^vendorExtensions.x-is-jackson-optional-nullable}}
-            {{#jackson}}
-{{>model/jackson_annotations}}{{/jackson}}{{/vendorExtensions.x-is-jackson-optional-nullable}}  public {{{datatypeWithEnum}}} {{getter}}() {
-        {{#vendorExtensions.x-is-jackson-optional-nullable}}
-            {{#isReadOnly}}
-{{! A readonly attribute doesn't have setter => jackson will set null directly if explicitly returned by API, so make sure we have an empty JsonNullable}}    if ({{name}} == null) {
-      {{name}} = JsonNullable.<{{{datatypeWithEnum}}}>{{#defaultValue}}of({{{.}}}){{/defaultValue}}{{^defaultValue}}undefined(){{/defaultValue}};
-    }
-    {{/isReadOnly}}
-    return {{name}}.orElse(null);
-        {{/vendorExtensions.x-is-jackson-optional-nullable}}
-        {{^vendorExtensions.x-is-jackson-optional-nullable}}
-    return {{name}};
-        {{/vendorExtensions.x-is-jackson-optional-nullable}}
-  }
-
-        {{#vendorExtensions.x-is-jackson-optional-nullable}}
-{{>model/jackson_annotations}}
-  public JsonNullable<{{{datatypeWithEnum}}}> {{getter}}_JsonNullable() {
-    return {{name}};
-  }
-
-  @JsonProperty(JSON_PROPERTY_{{nameInSnakeCase}})
-  {{#isReadOnly}}private{{/isReadOnly}}{{^isReadOnly}}public{{/isReadOnly}} void {{setter}}_JsonNullable(JsonNullable<{{{datatypeWithEnum}}}> {{name}}) {
-    {{! For getters/setters that have name differing from attribute name, we must include setter (albeit private) for jackson to be able to set the attribute}}   this.{{name}} = {{name}};
-  }
-
-        {{/vendorExtensions.x-is-jackson-optional-nullable}}
-        {{^isReadOnly}}
-            {{#jackson}}
-                {{^vendorExtensions.x-is-jackson-optional-nullable}}
-{{>model/jackson_annotations}}{{/vendorExtensions.x-is-jackson-optional-nullable}}{{/jackson}}{{#vendorExtensions.x-setter-extra-annotation}}
-  {{{vendorExtensions.x-setter-extra-annotation}}}
-{{/vendorExtensions.x-setter-extra-annotation}}  public void {{setter}}({{{datatypeWithEnum}}} {{name}}) {
-            {{#vendorExtensions.x-is-jackson-optional-nullable}}
-    this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{name}});
-            {{/vendorExtensions.x-is-jackson-optional-nullable}}
-            {{^vendorExtensions.x-is-jackson-optional-nullable}}
-    this.{{name}} = {{name}};
-            {{/vendorExtensions.x-is-jackson-optional-nullable}}
-  }
-
-        {{/isReadOnly}}
-    {{/vars}}
-  @Override
-  public boolean equals(Object o) {
-    {{#useReflectionEqualsHashCode}}
-    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
-    {{/useReflectionEqualsHashCode}}
-    {{^useReflectionEqualsHashCode}}
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-        {{#hasVars}}
-    {{classname}} {{classVarName}} = ({{classname}}) o;
-    return {{#vars}}{{#isByteArray}}Arrays{{/isByteArray}}{{^isByteArray}}Objects{{/isByteArray}}.equals(this.{{name}}, {{classVarName}}.{{name}}){{^-last}} &&
-        {{/-last}}{{/vars}}{{#parent}} &&
-        super.equals(o){{/parent}};
-        {{/hasVars}}
-        {{^hasVars}}
-    return {{#parent}}super.equals(o){{/parent}}{{^parent}}true{{/parent}};
-        {{/hasVars}}
-    {{/useReflectionEqualsHashCode}}
-  }
-
-  @Override
-  public int hashCode() {
-    {{#useReflectionEqualsHashCode}}
-    return HashCodeBuilder.reflectionHashCode(this);
-    {{/useReflectionEqualsHashCode}}
-    {{^useReflectionEqualsHashCode}}
-    return Objects.hash({{#vars}}{{^isByteArray}}{{name}}{{/isByteArray}}{{#isByteArray}}Arrays.hashCode({{name}}){{/isByteArray}}{{^-last}}, {{/-last}}{{/vars}}{{#parent}}{{#hasVars}}, {{/hasVars}}super.hashCode(){{/parent}});
-    {{/useReflectionEqualsHashCode}}
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class {{classname}} {\n");
-    {{#parent}}
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    {{/parent}}
-    {{#vars}}
-    sb.append("    {{name}}: ").append(toIndentedString({{name}})).append("\n");
-    {{/vars}}
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private{{#jsonb}} static{{/jsonb}} String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
-
-    {{#parcelableModel}}
-  public void writeToParcel(Parcel out, int flags) {
-        {{#model}}
-            {{#isArray}}
-    out.writeList(this);
-            {{/isArray}}
-            {{^isArray}}
-                {{#parent}}
-    super.writeToParcel(out, flags);
-                {{/parent}}
-                {{#vars}}
-    out.writeValue({{name}});
-                {{/vars}}
-            {{/isArray}}
-        {{/model}}
-  }
-
-  {{classname}}(Parcel in) {
-        {{#isArray}}
-    in.readTypedList(this, {{arrayModelType}}.CREATOR);
-        {{/isArray}}
-        {{^isArray}}
-            {{#parent}}
-    super(in);
-            {{/parent}}
-            {{#vars}}
-                {{#isPrimitiveType}}
-    {{name}} = ({{{datatypeWithEnum}}})in.readValue(null);
-                {{/isPrimitiveType}}
-                {{^isPrimitiveType}}
-    {{name}} = ({{{datatypeWithEnum}}})in.readValue({{complexType}}.class.getClassLoader());
-                {{/isPrimitiveType}}
-            {{/vars}}
-        {{/isArray}}
-  }
-
-  public int describeContents() {
-    return 0;
-  }
-
-  public static final Parcelable.Creator<{{classname}}> CREATOR = new Parcelable.Creator<{{classname}}>() {
-    public {{classname}} createFromParcel(Parcel in) {
-        {{#model}}
-            {{#isArray}}
-      {{classname}} result = new {{classname}}();
-      result.addAll(in.readArrayList({{arrayModelType}}.class.getClassLoader()));
-      return result;
-            {{/isArray}}
-            {{^isArray}}
-      return new {{classname}}(in);
-            {{/isArray}}
-        {{/model}}
-    }
-    public {{classname}}[] newArray(int size) {
-      return new {{classname}}[size];
-    }
-  };
-    {{/parcelableModel}}
-}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/bodyParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/params/bodyParams.mustache
deleted file mode 100644
index b111ea9e05d..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/bodyParams.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#isBodyParam}}@Body {{>params/beanValidation}}{{>params/type}} {{paramName}}{{/isBodyParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/cookieParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/params/cookieParams.mustache
deleted file mode 100644
index fab940b7460..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/cookieParams.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#isCookieParam}}@CookieValue(value="{{baseName}}"{{#defaultValue}}, defaultValue="{{defaultValue}}"{{/defaultValue}}) {{>params/beanValidationCore}}{{>params/type}} {{paramName}}{{/isCookieParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/formParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/params/formParams.mustache
deleted file mode 100644
index e41f37e421f..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/formParams.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#isFormParam}}{{>params/beanValidation}}{{>params/type}} {{paramName}}{{/isFormParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/headerParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/params/headerParams.mustache
deleted file mode 100644
index 9aab83b5462..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/headerParams.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#isHeaderParam}}@Header(name="{{baseName}}"{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{>params/beanValidation}}{{>params/type}} {{paramName}}{{/isHeaderParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/pathParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/params/pathParams.mustache
deleted file mode 100644
index c67b97ed3f6..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/pathParams.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#isPathParam}}@PathVariable(name="{{baseName}}"{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{>params/beanValidation}}{{>params/type}} {{paramName}}{{/isPathParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/queryParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/params/queryParams.mustache
deleted file mode 100644
index 7ef44500582..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/queryParams.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#isQueryParam}}@QueryParam(name="{{{baseName}}}"{{!default value}}{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}{{!multi format}}{{#isCollectionFormatMulti}}, format=QueryParam.Format.MULTI{{/isCollectionFormatMulti}}{{!deep object}}{{#isDeepObject}}, format=QueryParam.Format.DEEP_OBJECT{{/isDeepObject}}{{!other collection formats}}{{^isCollectionFormatMulti}}{{^isDeepObject}}{{#collectionFormat}}, format=QueryParam.Format.{{#lambda.uppercase}}{{collectionFormat}}{{/lambda.uppercase}}{{/collectionFormat}}{{/isDeepObject}}{{/isCollectionFormatMulti}}) {{!validation and type}}{{>params/beanValidation}}{{>params/type}} {{paramName}}{{/isQueryParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/query/QueryParam.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/query/QueryParam.mustache
deleted file mode 100644
index 4c3e845a1be..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/query/QueryParam.mustache
+++ /dev/null
@@ -1,78 +0,0 @@
-{{>licenseInfo}}
-package {{invokerPackage}}.query;
-
-import io.micronaut.context.annotation.AliasFor;
-import io.micronaut.core.bind.annotation.Bindable;
-import javax.annotation.Generated;
-import java.lang.annotation.*;
-import static java.lang.annotation.RetentionPolicy.RUNTIME;
-
-
-/**
- * Indicates that the parameter is a query parameter
- */
-{{>generatedAnnotation}}
-@Documented
-@Retention(RUNTIME)
-@Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE})
-@Bindable
-@Inherited
-public @interface QueryParam {
-
-    /**
-     * @return The name of the parameter
-     */
-    @AliasFor(annotation = Bindable.class, member = "value")
-    String value() default "";
-
-    /**
-     * @return The name of the parameter
-     */
-    @AliasFor(annotation = Bindable.class, member = "value")
-    String name() default "";
-
-    /**
-     * @see Bindable#defaultValue()
-     * @return The default value
-     */
-    @AliasFor(annotation = Bindable.class, member = "defaultValue")
-    String defaultValue() default "";
-
-    /**
-     * @return The format of the given values in the URL
-     */
-    Format format() default Format.CSV;
-
-    /**
-     * The possible formats of the query parameter in the URL.
-     * The conversion of various types is according to openapi v3 specification:
-     * @see <a href="https://swagger.io/specification/">openapi v3 specification</a>
-     * Values are serialized using Jackson object mapper
-     */
-    public static enum Format {
-        /**
-         * The values of iterator are comma-delimited.
-         * Ambiguity can arise if values of Iterator contain commas inside themselves. In such case, the MULTI format
-         * should be preferred.
-         * Null values are not supported and will be removed during the conversion process.
-         */
-        CSV,
-        /**
-         * The values are space-delimited, similarly to comma-delimited format.
-         */
-        SSV,
-        /**
-         * The values a delimited by pipes "|", similarly to comma-delimited format.
-         */
-        PIPES,
-        /**
-         * The values are repeated as separate parameters, e.g.: color=blue&color=black&color=brown.
-         */
-        MULTI,
-        /**
-         * The format supports 1-depth recursion into objects with setting each attribute as a separate parameter, e.g.:
-         * 'color[R]=100&color[G]=200&color[B]=150'.
-         */
-        DEEP_OBJECT
-    }
-}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/query/QueryParamBinder.mustache b/modules/openapi-generator/src/main/resources/java-micronaut-client/query/QueryParamBinder.mustache
deleted file mode 100644
index 2a90b8b6658..00000000000
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/query/QueryParamBinder.mustache
+++ /dev/null
@@ -1,164 +0,0 @@
-{{>licenseInfo}}
-package {{invokerPackage}}.query;
-
-import io.micronaut.core.annotation.NonNull;
-import io.micronaut.core.beans.BeanProperty;
-import io.micronaut.core.beans.BeanWrapper;
-import io.micronaut.core.convert.ArgumentConversionContext;
-import io.micronaut.core.convert.ConversionContext;
-import io.micronaut.core.convert.ConversionService;
-import io.micronaut.core.util.StringUtils;
-import io.micronaut.http.MutableHttpRequest;
-import io.micronaut.http.client.bind.AnnotatedClientArgumentRequestBinder;
-import io.micronaut.http.client.bind.ClientRequestUriContext;
-
-import java.util.Collection;
-import java.util.Optional;
-import jakarta.inject.Singleton;
-import javax.annotation.Generated;
-
-
-{{>generatedAnnotation}}
-@Singleton
-public class QueryParamBinder implements AnnotatedClientArgumentRequestBinder<QueryParam> {
-    private static final Character COMMA_DELIMITER = ',';
-    private static final Character PIPE_DELIMITER = '|';
-    private static final Character SPACE_DELIMITER = ' ';
-
-    private final ConversionService<?> conversionService;
-
-    public QueryParamBinder(ConversionService<?> conversionService) {
-        this.conversionService = conversionService;
-    }
-
-    @NonNull
-    @Override
-    public Class<QueryParam> getAnnotationType() {
-        return QueryParam.class;
-    }
-
-    @Override
-    public void bind(@NonNull ArgumentConversionContext<Object> context,
-                     @NonNull ClientRequestUriContext uriContext,
-                     @NonNull Object value,
-                     @NonNull MutableHttpRequest<?> request
-    ) {
-        String key = context.getAnnotationMetadata().stringValue(QueryParam.class)
-                .filter(StringUtils::isNotEmpty)
-                .orElse(context.getArgument().getName());
-
-        QueryParam.Format format = context.getAnnotationMetadata()
-                .enumValue(QueryParam.class, "format", QueryParam.Format.class)
-                .orElse(QueryParam.Format.CSV);
-
-        if (format == QueryParam.Format.DEEP_OBJECT) {
-            addDeepObjectParameters(context, value, key, uriContext);
-        } else if (format == QueryParam.Format.MULTI) {
-            addMultiParameters(context, value, key, uriContext);
-        } else {
-            Character delimiter = ' ';
-            switch (format) {
-                case SSV:
-                    delimiter = SPACE_DELIMITER;
-                    break;
-                case PIPES:
-                    delimiter = PIPE_DELIMITER;
-                    break;
-                case CSV:
-                    delimiter = COMMA_DELIMITER;
-                    break;
-                default:
-            }
-            createSeparatedQueryParam(context, value, delimiter)
-                    .ifPresent(v -> uriContext.addQueryParameter(key, v));
-        }
-    }
-
-    private void addMultiParameters(
-            ArgumentConversionContext<Object> context, Object value, String key, ClientRequestUriContext uriContext
-    ) {
-        if (value instanceof Iterable) {
-            // noinspection unchecked
-            Iterable<?> iterable = (Iterable<?>) value;
-
-            for (Object item : iterable) {
-                convertToString(context, item).ifPresent(v -> uriContext.addQueryParameter(key, v));
-            }
-        } else {
-            convertToString(context, value).ifPresent(v -> uriContext.addQueryParameter(key, v));
-        }
-    }
-
-    private void addDeepObjectParameters(
-            ArgumentConversionContext<Object> context, Object value, String key, ClientRequestUriContext uriContext
-    ) {
-        if (value instanceof Iterable) {
-            StringBuilder builder = new StringBuilder(key);
-
-            Iterable<?> iterable = (Iterable<?>) value;
-
-            int i = 0;
-            for (Object item: iterable) {
-                if (item == null) {
-                    continue;
-                }
-                String index = String.valueOf(i);
-
-                builder.append('[');
-                builder.append(index);
-                builder.append(']');
-
-                convertToString(context, item).ifPresent(v -> uriContext.addQueryParameter(builder.toString(), v));
-                builder.delete(builder.length() - index.length() - 2, builder.length());
-                i++;
-            }
-        } else if (value != null) {
-            StringBuilder builder = new StringBuilder(key);
-            BeanWrapper<Object> wrapper = BeanWrapper.getWrapper(value);
-            Collection<BeanProperty<Object, Object>> properties = wrapper.getBeanProperties();
-            for (BeanProperty<Object, Object> property: properties) {
-                Object item = property.get(value);
-                if (item == null) {
-                    continue;
-                }
-                builder.append('[');
-                builder.append(property.getName());
-                builder.append(']');
-
-                convertToString(context, item).ifPresent(v -> uriContext.addQueryParameter(builder.toString(), v));
-                builder.delete(builder.length() - property.getName().length() - 2, builder.length());
-            }
-        }
-    }
-
-    private Optional<String> createSeparatedQueryParam(
-            ArgumentConversionContext<Object> context, Object value, Character delimiter
-    ) {
-        if (value instanceof Iterable) {
-            StringBuilder builder = new StringBuilder();
-            // noinspection unchecked
-            Iterable<?> iterable = (Iterable<?>) value;
-
-            boolean first = true;
-            for (Object item : iterable) {
-                Optional<String> opt = convertToString(context, item);
-                if (opt.isPresent()) {
-                    if (!first) {
-                        builder.append(delimiter);
-                    }
-                    first = false;
-                    builder.append(opt.get());
-                }
-            }
-
-            return Optional.of(builder.toString());
-        } else {
-            return convertToString(context, value);
-        }
-    }
-
-    private Optional<String> convertToString(ArgumentConversionContext<Object> context, Object value) {
-        return conversionService.convert(value, ConversionContext.STRING.with(context.getAnnotationMetadata()))
-                .filter(StringUtils::isNotEmpty);
-    }
-}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/api.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/api.mustache
new file mode 100644
index 00000000000..871eb59dfe0
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/api.mustache
@@ -0,0 +1,71 @@
+{{>common/licenseInfo}}
+package {{package}};
+
+import io.micronaut.http.annotation.*;
+import io.micronaut.core.annotation.*;
+import io.micronaut.http.client.annotation.Client;
+{{#configureAuth}}
+import {{invokerPackage}}.auth.Authorization;
+{{/configureAuth}}
+import io.micronaut.core.convert.format.Format;
+import reactor.core.publisher.Mono;
+{{#imports}}import {{import}};
+{{/imports}}
+import javax.annotation.Generated;
+{{^fullJavaUtil}}
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+{{/fullJavaUtil}}{{#useBeanValidation}}
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+{{/useBeanValidation}}
+
+{{>common/generatedAnnotation}}
+@Client("${base-path}")
+public interface {{classname}} {
+{{#operations}}
+    {{#operation}}
+    /**
+        {{#summary}}
+     * {{summary}}
+        {{/summary}}
+        {{#notes}}
+     * {{notes}}
+        {{/notes}}
+        {{^summary}}
+            {{^notes}}
+     * {{nickname}}
+            {{/notes}}
+        {{/summary}}
+     *
+        {{#allParams}}
+     * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
+        {{/allParams}}
+        {{#returnType}}
+     * @return {{returnType}}
+        {{/returnType}}
+        {{#externalDocs}}
+     * {{description}}
+     * @see <a href="{{url}}">{{summary}} Documentation</a>
+{{/externalDocs}}
+     */
+    @{{#lambda.pascalcase}}{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}{{/lambda.pascalcase}}(uri="{{{path}}}")
+        {{#vendorExtensions.x-contentType}}
+    @Produces(value={"{{vendorExtensions.x-contentType}}"})
+        {{/vendorExtensions.x-contentType}}
+    @Consumes(value={"{{vendorExtensions.x-accepts}}"})
+    {{!auth methods}}
+        {{#configureAuth}}
+            {{#authMethods}}
+    @Authorization(name="{{{name}}}"{{!scopes}}{{#isOAuth}}, scopes={{openbrace}}{{#scopes}}"{{{scope}}}"{{^-last}}, {{/-last}}{{/scopes}}{{closebrace}}{{/isOAuth}})
+            {{/authMethods}}
+        {{/configureAuth}}
+    {{!the method definition}}
+    {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} {{nickname}}({{^allParams}});{{/allParams}}{{#allParams}}
+        {{>client/params/queryParams}}{{>client/params/pathParams}}{{>client/params/headerParams}}{{>client/params/bodyParams}}{{>client/params/formParams}}{{>client/params/cookieParams}}{{^-last}}, {{/-last}}{{#-last}}
+  );{{/-last}}{{/allParams}}
+    {{/operation}}
+{{/operations}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/Authorization.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/Authorization.mustache
similarity index 94%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/Authorization.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/Authorization.mustache
index ac5f7f979fd..e805e24db6d 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/Authorization.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/Authorization.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth;
 
 import io.micronaut.context.annotation.AliasFor;
@@ -14,7 +14,7 @@ import static java.lang.annotation.RetentionPolicy.RUNTIME;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 @Documented
 @Retention(RUNTIME)
 @Target(METHOD)
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/AuthorizationBinder.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/AuthorizationBinder.mustache
similarity index 97%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/AuthorizationBinder.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/AuthorizationBinder.mustache
index fad44af0f00..7dc1814c237 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/AuthorizationBinder.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/AuthorizationBinder.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth;
 
 import io.micronaut.aop.MethodInvocationContext;
@@ -15,7 +15,7 @@ import java.util.List;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 @Singleton
 public class AuthorizationBinder implements AnnotatedClientRequestBinder<Authorization> {
 
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/AuthorizationFilter.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/AuthorizationFilter.mustache
similarity index 99%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/AuthorizationFilter.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/AuthorizationFilter.mustache
index 021a5425d39..3bd7a3562df 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/AuthorizationFilter.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/AuthorizationFilter.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth;
 
 import io.micronaut.context.BeanContext;
@@ -36,7 +36,7 @@ import java.util.stream.Stream;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 @Filter(Filter.MATCH_ALL_PATTERN)
 public class AuthorizationFilter implements HttpClientFilter {
     private static final Logger LOG = LoggerFactory.getLogger(ClientCredentialsHttpClientFilter.class);
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/Authorizations.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/Authorizations.mustache
similarity index 89%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/Authorizations.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/Authorizations.mustache
index 1ee37c7c1df..7d3fb75cdab 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/Authorizations.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/Authorizations.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth;
 
 import io.micronaut.core.bind.annotation.Bindable;
@@ -11,7 +11,7 @@ import static java.lang.annotation.RetentionPolicy.RUNTIME;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 @Documented
 @Retention(RUNTIME)
 @Target(METHOD)
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/ApiKeyAuthConfiguration.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/ApiKeyAuthConfiguration.mustache
similarity index 97%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/ApiKeyAuthConfiguration.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/ApiKeyAuthConfiguration.mustache
index 969da02fabc..28d1da0655c 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/ApiKeyAuthConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/ApiKeyAuthConfiguration.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth.configuration;
 
 import io.micronaut.context.annotation.ConfigurationInject;
@@ -10,7 +10,7 @@ import io.micronaut.http.cookie.Cookie;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 @EachProperty("security.api-key-auth")
 public class ApiKeyAuthConfiguration implements ConfigurableAuthorization {
     private final String name;
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/ConfigurableAuthorization.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/ConfigurableAuthorization.mustache
similarity index 84%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/ConfigurableAuthorization.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/ConfigurableAuthorization.mustache
index 2d649c3a3be..ab87ecfc02c 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/ConfigurableAuthorization.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/ConfigurableAuthorization.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth.configuration;
 
 import io.micronaut.core.annotation.NonNull;
@@ -6,7 +6,7 @@ import io.micronaut.http.MutableHttpRequest;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 public interface ConfigurableAuthorization {
     String getName();
 
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/HttpBasicAuthConfiguration.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/HttpBasicAuthConfiguration.mustache
similarity index 96%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/HttpBasicAuthConfiguration.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/HttpBasicAuthConfiguration.mustache
index 189613b4f7e..6431c2846d6 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/auth/configuration/HttpBasicAuthConfiguration.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/auth/configuration/HttpBasicAuthConfiguration.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{invokerPackage}}.auth.configuration;
 
 import io.micronaut.context.annotation.ConfigurationInject;
@@ -9,7 +9,7 @@ import io.micronaut.http.MutableHttpRequest;
 import javax.annotation.Generated;
 
 
-{{>generatedAnnotation}}
+{{>common/generatedAnnotation}}
 @EachProperty("security.basic-auth")
 public class HttpBasicAuthConfiguration implements ConfigurableAuthorization {
     private final String name;
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/README.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/doc/README.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/doc/README.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/doc/README.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/api_doc.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/doc/api_doc.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/doc/api_doc.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/doc/api_doc.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/auth.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/doc/auth.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/doc/auth.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/doc/auth.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/params/bodyParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/bodyParams.mustache
new file mode 100644
index 00000000000..fd6862369f1
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/bodyParams.mustache
@@ -0,0 +1 @@
+{{#isBodyParam}}@Body {{>common/params/beanValidation}}{{>client/params/type}} {{paramName}}{{/isBodyParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/params/cookieParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/cookieParams.mustache
new file mode 100644
index 00000000000..60c2c377ec7
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/cookieParams.mustache
@@ -0,0 +1 @@
+{{#isCookieParam}}@CookieValue(value="{{baseName}}"{{#defaultValue}}, defaultValue="{{defaultValue}}"{{/defaultValue}}) {{>common/params/beanValidation}}{{>client/params/type}} {{paramName}}{{/isCookieParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/params/formParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/formParams.mustache
new file mode 100644
index 00000000000..cfbd00f3428
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/formParams.mustache
@@ -0,0 +1 @@
+{{#isFormParam}}{{>common/params/beanValidation}}{{>client/params/type}} {{paramName}}{{/isFormParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/params/headerParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/headerParams.mustache
new file mode 100644
index 00000000000..f8a5a79ab62
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/headerParams.mustache
@@ -0,0 +1 @@
+{{#isHeaderParam}}@Header(name="{{baseName}}"{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{>common/params/beanValidation}}{{>client/params/type}} {{paramName}}{{/isHeaderParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/params/pathParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/pathParams.mustache
new file mode 100644
index 00000000000..64a0be56c6c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/pathParams.mustache
@@ -0,0 +1 @@
+{{#isPathParam}}@PathVariable(name="{{baseName}}"{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{>common/params/beanValidation}}{{>client/params/type}} {{paramName}}{{/isPathParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/client/params/queryParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/queryParams.mustache
new file mode 100644
index 00000000000..aed538a1c3d
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/queryParams.mustache
@@ -0,0 +1 @@
+{{#isQueryParam}}@QueryValue(value="{{{baseName}}}"{{!default value}}{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{!validation and type}}{{>common/params/beanValidation}}{{>client/params/type}} {{paramName}}{{/isQueryParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/type.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/params/type.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/params/type.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/params/type.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/api_test.groovy.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/test/api_test.groovy.mustache
similarity index 88%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/api_test.groovy.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/test/api_test.groovy.mustache
index af4469421f3..a660a5bb112 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/api_test.groovy.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/test/api_test.groovy.mustache
@@ -37,7 +37,7 @@ class {{classname}}Spec extends Specification {
         {{{dataType}}} {{paramName}} = null
         {{/allParams}}
         // {{#returnType}}{{{returnType}}} response = {{/returnType}}api.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).block()
-        // {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Void>{{/returnType}} asyncResponse = api.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}})
+        // {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} asyncResponse = api.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}})
 
         expect:
         true
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/api_test.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/test/api_test.mustache
similarity index 88%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/api_test.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/test/api_test.mustache
index a3c3e48e44b..fc737b42696 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/api_test.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/client/test/api_test.mustache
@@ -39,7 +39,7 @@ public class {{classname}}Test {
         {{{dataType}}} {{paramName}} = null;
         {{/allParams}}
         // {{#returnType}}{{{returnType}}} response = {{/returnType}}api.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).block();
-        // {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Void>{{/returnType}} asyncResponse = api.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});
+        // {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} asyncResponse = api.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});
         // TODO: test validations
     }
 
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model_test.groovy.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/test/model_test.groovy.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model_test.groovy.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/test/model_test.groovy.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model_test.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/client/test/model_test.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model_test.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/client/test/model_test.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/Application.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/Application.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/Application.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/Application.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/application.yml.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/application.yml.mustache
similarity index 87%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/application.yml.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/application.yml.mustache
index 4b0dd5f1c23..4e7d6e84498 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/application.yml.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/application.yml.mustache
@@ -1,5 +1,7 @@
-base-path: "{{{basePath}}}"
-context-path: "{{{contextPath}}}"
+{{!CLIENT CONFIGURATION}}
+{{#client}}
+base-path: "{{{basePath}}}/"
+context-path: "{{{contextPath}}}/"
 
 micronaut:
     application:
@@ -51,6 +53,19 @@ micronaut:
             username:
             password:
     {{/isBasic}}{{/authMethods}}{{/configureAuth}}
+{{/client}}
+{{!SERVER CONFIGURATION}}
+{{#server}}
+context-path: "{{{contextPath}}}/"
+
+micronaut:
+    application:
+        name: {{artifactId}}
+    server:
+        port: 8080
+    security:
+        # authentication: bearer | cookie | session | idtoken
+{{/server}}
 
 jackson:
     serialization:
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/git/git_push.sh.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/git/git_push.sh.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/git/git_push.sh.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/git/git_push.sh.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/git/gitignore.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/git/gitignore.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/git/gitignore.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/git/gitignore.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/build.gradle.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/build.gradle.mustache
similarity index 85%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/build.gradle.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/build.gradle.mustache
index a654fe37133..11ae6117087 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/build.gradle.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/build.gradle.mustache
@@ -2,8 +2,8 @@ plugins {
     {{#isTestSpock}}
     id("groovy")
     {{/isTestSpock}}
-    id("com.github.johnrengelman.shadow") version "7.0.0"
-    id("io.micronaut.application") version "2.0.3"
+    id("com.github.johnrengelman.shadow") version "7.1.1"
+    id("io.micronaut.application") version "3.1.1"
 }
 
 version = "{{artifactVersion}}"
@@ -30,12 +30,16 @@ micronaut {
 
 dependencies {
     annotationProcessor("io.micronaut:micronaut-http-validation")
+    {{#useAuth}}
     annotationProcessor("io.micronaut.security:micronaut-security-annotations")
+    {{/useAuth}}
     implementation("io.micronaut:micronaut-http-client")
     implementation("io.micronaut:micronaut-runtime")
     implementation("io.micronaut:micronaut-validation")
+    {{#useAuth}}
     implementation("io.micronaut.security:micronaut-security")
     implementation("io.micronaut.security:micronaut-security-oauth2")
+    {{/useAuth}}
     implementation("io.micronaut.reactor:micronaut-reactor")
     implementation("io.swagger:swagger-annotations:1.5.9")
     runtimeOnly("ch.qos.logback:logback-classic")
@@ -49,3 +53,5 @@ java {
     sourceCompatibility = JavaVersion.toVersion("1.8")
     targetCompatibility = JavaVersion.toVersion("1.8")
 }
+
+graalvmNative.toolchainDetection = false
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/gradle.properties.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/gradle.properties.mustache
new file mode 100644
index 00000000000..b95f66a2537
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/gradle.properties.mustache
@@ -0,0 +1 @@
+micronautVersion={{{micronautVersion}}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/settings.gradle.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/settings.gradle.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradle/settings.gradle.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradle/settings.gradle.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradle-wrapper.jar b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradle-wrapper.jar
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradle-wrapper.jar
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradle-wrapper.jar
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradle-wrapper.properties.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradle-wrapper.properties.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradle-wrapper.properties.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradle-wrapper.properties.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradlew.bat.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradlew.bat.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradlew.bat.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradlew.bat.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradlew.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradlew.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/gradlew/gradlew.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/gradlew/gradlew.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/logback.xml.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/logback.xml.mustache
new file mode 100644
index 00000000000..82218708264
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/logback.xml.mustache
@@ -0,0 +1,15 @@
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <withJansi>false</withJansi>
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%cyan(%d{HH:mm:ss.SSS}) %gray([%thread]) %highlight(%-5level) %magenta(%logger{36}) - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/MavenWrapperDownloader.java.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/MavenWrapperDownloader.java.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/MavenWrapperDownloader.java.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/MavenWrapperDownloader.java.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/maven-wrapper.jar.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/maven-wrapper.jar.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/maven-wrapper.jar.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/maven-wrapper.jar.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/maven-wrapper.properties.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/maven-wrapper.properties.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/maven-wrapper.properties.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/maven-wrapper.properties.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/mvnw.bat.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/mvnw.bat.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/mvnw.bat.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/mvnw.bat.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/mvnw.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/mvnw.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/mavenw/mvnw.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/mavenw/mvnw.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/pom.xml.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/pom.xml.mustache
similarity index 97%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/pom.xml.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/pom.xml.mustache
index 3ef1c44ab3e..bf1768a17c2 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/configuration/pom.xml.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/configuration/pom.xml.mustache
@@ -10,7 +10,7 @@
     <parent>
         <groupId>io.micronaut</groupId>
         <artifactId>micronaut-parent</artifactId>
-        <version>3.0.0-M5</version>
+        <version>{{{micronautVersion}}}</version>
     </parent>
 
     <properties>
@@ -18,7 +18,7 @@
         <jdk.version>1.8</jdk.version>
         <!-- If you are building with JDK 9 or higher, you can uncomment the lines below to set the release version -->
         <!-- <release.version>8</release.version> -->
-        <micronaut.version>3.0.0-M5</micronaut.version>
+        <micronaut.version>{{{micronautVersion}}}</micronaut.version>
         <exec.mainClass>{{groupId}}.Application</exec.mainClass>
         <micronaut.runtime>netty</micronaut.runtime>
         <swagger-annotations-version>1.5.21</swagger-annotations-version>
@@ -102,6 +102,7 @@
             <artifactId>micronaut-reactor</artifactId>
             <scope>compile</scope>
         </dependency>
+    {{#useAuth}}
         <dependency>
             <groupId>io.micronaut.security</groupId>
             <artifactId>micronaut-security</artifactId>
@@ -112,6 +113,7 @@
             <artifactId>micronaut-security-oauth2</artifactId>
             <scope>compile</scope>
         </dependency>
+    {{/useAuth}}
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
@@ -144,11 +146,13 @@
                             <artifactId>micronaut-http-validation</artifactId>
                             <version>${micronaut.version}</version>
                         </path>
+    {{#useAuth}}
                         <path>
                             <groupId>io.micronaut.security</groupId>
                             <artifactId>micronaut-security-annotations</artifactId>
                             <version>${micronaut.security.version}</version>
                         </path>
+    {{/useAuth}}
                     </annotationProcessorPaths>
                     <compilerArgs>
                         <arg>-Amicronaut.processing.group={{groupId}}</arg>
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/enum_outer_doc.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/enum_outer_doc.mustache
new file mode 100644
index 00000000000..3851c2f3050
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/enum_outer_doc.mustache
@@ -0,0 +1,9 @@
+# {{classname}}
+
+## Enum
+
+The class is defined in **[{{classname}}.java](../../{{{modelFolder}}}/{{classname}}.java)**
+
+{{#allowableValues}}{{#enumVars}}
+* `{{name}}` (value: `{{{value}}}`)
+{{/enumVars}}{{/allowableValues}}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/model_doc.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/model_doc.mustache
new file mode 100644
index 00000000000..8e6c8dde1c6
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/model_doc.mustache
@@ -0,0 +1,4 @@
+{{#models}}{{#model}}
+
+{{#isEnum}}{{>common/doc/enum_outer_doc}}{{/isEnum}}{{^isEnum}}{{>common/doc/pojo_doc}}{{/isEnum}}
+{{/model}}{{/models}}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/pojo_doc.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/pojo_doc.mustache
similarity index 76%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/doc/pojo_doc.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/doc/pojo_doc.mustache
index 0a79703d7a0..05d13ee4b59 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/pojo_doc.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/doc/pojo_doc.mustache
@@ -1,7 +1,10 @@
 # {{#vendorExtensions.x-is-one-of-interface}}Interface {{/vendorExtensions.x-is-one-of-interface}}{{classname}}
+{{#description}}
 
-{{#description}}{{&description}}
+{{{description}}}
 {{/description}}
+
+The class is defined in **[{{classname}}.java](../../{{{modelFolder}}}/{{classname}}.java)**
 {{^vendorExtensions.x-is-one-of-interface}}
 
 ## Properties
@@ -10,30 +13,34 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 {{#vars}}**{{name}}** | {{#isEnum}}[**{{datatypeWithEnum}}**](#{{datatypeWithEnum}}){{/isEnum}}{{^isEnum}}{{#isContainer}}{{#isArray}}{{#items}}{{#isModel}}[{{/isModel}}{{/items}}`{{baseType}}{{#items}}&lt;{{dataType}}&gt;`{{#isModel}}]({{^baseType}}{{dataType}}{{/baseType}}{{#baseType}}{{baseType}}{{/baseType}}.md){{/isModel}}{{/items}}{{/isArray}}{{#isMap}}{{#items}}{{#isModel}}[{{/isModel}}`Map&lt;String, {{dataType}}&gt;`{{#isModel}}]({{^baseType}}{{dataType}}{{/baseType}}{{#baseType}}{{baseType}}{{/baseType}}.md){{/isModel}}{{/items}}{{/isMap}}{{/isContainer}}{{^isContainer}}{{#isModel}}[{{/isModel}}`{{dataType}}`{{#isModel}}]({{^baseType}}{{dataType}}{{/baseType}}{{#baseType}}{{baseType}}{{/baseType}}.md){{/isModel}}{{/isContainer}}{{/isEnum}} | {{description}} | {{^required}} [optional property]{{/required}}{{#isReadOnly}} [readonly property]{{/isReadOnly}}
 {{/vars}}
+{{#vars}}
 
-{{#vars}}{{#isEnum}}
-
-## Enum: {{datatypeWithEnum}}
+    {{#isEnum}}
+## {{datatypeWithEnum}}
 
 Name | Value
----- | -----{{#allowableValues}}{{#enumVars}}
-{{name}} | `{{value}}`{{/enumVars}}{{/allowableValues}}
-{{/isEnum}}{{/vars}}
-
+---- | -----
+    {{#allowableValues}}
+        {{#enumVars}}
+{{name}} | `{{{value}}}`
+        {{/enumVars}}
+    {{/allowableValues}}
+    {{/isEnum}}
+{{/vars}}
 {{#vendorExtensions.x-implements.0}}
+
 ## Implemented Interfaces
 
-{{#vendorExtensions.x-implements}}
+    {{#vendorExtensions.x-implements}}
 * `{{{.}}}`
-{{/vendorExtensions.x-implements}}
+    {{/vendorExtensions.x-implements}}
 {{/vendorExtensions.x-implements.0}}
 {{/vendorExtensions.x-is-one-of-interface}}
-
 {{#vendorExtensions.x-is-one-of-interface}}
 
 ## Implementing Classes
 
-{{#oneOf}}
+    {{#oneOf}}
 * `{{{.}}}`
-{{/oneOf}}
+    {{/oneOf}}
 {{/vendorExtensions.x-is-one-of-interface}}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/generatedAnnotation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/generatedAnnotation.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/generatedAnnotation.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/generatedAnnotation.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/licenseInfo.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/licenseInfo.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/licenseInfo.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/licenseInfo.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/model/beanValidation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/beanValidation.mustache
new file mode 100644
index 00000000000..ecf4809f9e3
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/beanValidation.mustache
@@ -0,0 +1,52 @@
+{{#useBeanValidation}}{{!
+validate all pojos and enums
+}}{{^isContainer}}{{#isModel}}    @Valid
+{{/isModel}}{{/isContainer}}{{!
+nullable & nonnull
+}}{{#required}}{{#isNullable}}    @Nullable
+{{/isNullable}}{{^isNullable}}    @NotNull
+{{/isNullable}}{{/required}}{{^required}}    @Nullable
+{{/required}}{{!
+pattern
+}}{{#pattern}}{{^isByteArray}}    @Pattern(regexp="{{{pattern}}}")
+{{/isByteArray}}{{/pattern}}{{!
+both minLength && maxLength
+}}{{#minLength}}{{#maxLength}}    @Size(min={{minLength}}, max={{maxLength}})
+{{/maxLength}}{{/minLength}}{{!
+just minLength
+}}{{#minLength}}{{^maxLength}}    @Size(min={{minLength}})
+{{/maxLength}}{{/minLength}}{{!
+just maxLength
+}}{{^minLength}}{{#maxLength}}    @Size(max={{maxLength}})
+{{/maxLength}}{{/minLength}}{{!
+@Size: both minItems && maxItems
+}}{{#minItems}}{{#maxItems}}    @Size(min={{minItems}}, max={{maxItems}})
+{{/maxItems}}{{/minItems}}{{!
+@Size: just minItems
+}}{{#minItems}}{{^maxItems}}    @Size(min={{minItems}})
+{{/maxItems}}{{/minItems}}{{!
+@Size: just maxItems
+}}{{^minItems}}{{#maxItems}}    @Size(max={{maxItems}})
+{{/maxItems}}{{/minItems}}{{!
+@Email
+}}{{#isEmail}}    @Email
+{{/isEmail}}{{!
+check for integer or long / all others=decimal type with @Decimal*
+isInteger set
+}}{{#isInteger}}{{#minimum}}    @Min({{minimum}})
+{{/minimum}}{{#maximum}}    @Max({{maximum}})
+{{/maximum}}{{/isInteger}}{{!
+isLong set
+}}{{#isLong}}{{#minimum}}    @Min({{minimum}}L)
+{{/minimum}}{{#maximum}}    @Max({{maximum}}L)
+{{/maximum}}{{/isLong}}{{!
+Not Integer, not Long => we have a decimal value!
+}}{{^isInteger}}{{^isLong}}{{!
+minimum for decimal value
+}}{{#minimum}}    @DecimalMin({{#exclusiveMinimum}}value={{/exclusiveMinimum}}"{{minimum}}"{{#exclusiveMinimum}}, inclusive=false{{/exclusiveMinimum}})
+{{/minimum}}{{!
+maximal for decimal value
+}}{{#maximum}}    @DecimalMax({{#exclusiveMaximum}}value={{/exclusiveMaximum}}"{{maximum}}"{{#exclusiveMaximum}}, inclusive=false{{/exclusiveMaximum}})
+{{/maximum}}{{!
+close decimal values
+}}{{/isLong}}{{/isInteger}}{{/useBeanValidation}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/model/jackson_annotations.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/jackson_annotations.mustache
new file mode 100644
index 00000000000..6421884f47d
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/jackson_annotations.mustache
@@ -0,0 +1,26 @@
+{{!
+ If this is map and items are nullable, make sure that nulls are included.
+ To determine what JsonInclude.Include method to use, consider the following:
+ * If the field is required, always include it, even if it is null.
+ * Else use custom behaviour, IOW use whatever is defined on the object mapper
+ }}
+    @JsonProperty(JSON_PROPERTY_{{nameInSnakeCase}})
+    @JsonInclude({{#isMap}}{{#items.isNullable}}content = JsonInclude.Include.ALWAYS, {{/items.isNullable}}{{/isMap}}value = JsonInclude.Include.{{#required}}ALWAYS{{/required}}{{^required}}USE_DEFAULTS{{/required}})
+    {{#withXml}}
+        {{^isContainer}}
+    @JacksonXmlProperty({{#isXmlAttribute}}isAttribute = true, {{/isXmlAttribute}}{{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}localName = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
+    @JacksonXmlProperty({{#isXmlAttribute}}isAttribute = true, {{/isXmlAttribute}}{{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}localName = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
+        {{/isContainer}}
+        {{#isContainer}}
+            {{#isXmlWrapped}}
+    // items.xmlName={{items.xmlName}}
+    @JacksonXmlElementWrapper(useWrapping = {{isXmlWrapped}}, {{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}localName = "{{#items.xmlName}}{{items.xmlName}}{{/items.xmlName}}{{^items.xmlName}}{{items.baseName}}{{/items.xmlName}}")
+            {{/isXmlWrapped}}
+        {{/isContainer}}
+    {{/withXml}}
+    {{#isDateTime}}
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+    {{/isDateTime}}
+    {{#isDate}}
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
+    {{/isDate}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/model.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/model.mustache
similarity index 91%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model/model.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/model/model.mustache
index d9bf0572982..f3119818d38 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/model.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/model.mustache
@@ -1,4 +1,4 @@
-{{>licenseInfo}}
+{{>common/licenseInfo}}
 package {{package}};
 
 {{#useReflectionEqualsHashCode}}
@@ -34,14 +34,14 @@ import javax.annotation.Generated;
 {{#models}}
     {{#model}}
         {{#isEnum}}
-{{>model/modelEnum}}
+{{>common/model/modelEnum}}
         {{/isEnum}}
         {{^isEnum}}
             {{#vendorExtensions.x-is-one-of-interface}}
-{{>model/oneof_interface}}
+{{>common/model/oneof_interface}}
             {{/vendorExtensions.x-is-one-of-interface}}
             {{^vendorExtensions.x-is-one-of-interface}}
-{{>model/pojo}}
+{{>common/model/pojo}}
             {{/vendorExtensions.x-is-one-of-interface}}
         {{/isEnum}}
     {{/model}}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/modelInnerEnum.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/modelEnum.mustache
similarity index 52%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model/modelInnerEnum.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/model/modelEnum.mustache
index cd49673d015..a2e0f03ade0 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/modelInnerEnum.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/modelEnum.mustache
@@ -1,14 +1,15 @@
-  /**
-   * {{^description}}Gets or Sets {{{name}}}{{/description}}{{#description}}{{description}}{{/description}}
-   */
-{{#withXml}}
-  @XmlType(name="{{datatypeWithEnum}}")
-  @XmlEnum({{dataType}}.class)
-{{/withXml}}
+{{#jackson}}
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+{{/jackson}}
+
+/**
+ * {{^description}}Gets or Sets {{{name}}}{{/description}}{{#description}}{{description}}{{/description}}
+ */
 {{#additionalEnumTypeAnnotations}}
-  {{{.}}}
-{{/additionalEnumTypeAnnotations}}
-  public enum {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}} {
+{{{.}}}
+{{/additionalEnumTypeAnnotations}}{{#useBeanValidation}}@Introspected
+{{/useBeanValidation}}public enum {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} {
     {{#allowableValues}}
         {{#enumVars}}
             {{#enumDescription}}
@@ -25,36 +26,36 @@
 
     private {{{dataType}}} value;
 
-    {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}}({{{dataType}}} value) {
-      this.value = value;
+    {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}({{{dataType}}} value) {
+        this.value = value;
     }
 
     {{#jackson}}
     @JsonValue
     {{/jackson}}
     public {{{dataType}}} getValue() {
-      return value;
+        return value;
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        return String.valueOf(value);
     }
 
     {{#jackson}}
     @JsonCreator
     {{/jackson}}
     public static {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} fromValue({{{dataType}}} value) {
-      for ({{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} b : {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}.values()) {
-        if (b.value.equals(value)) {
-          return b;
+        for ({{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} b : {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}.values()) {
+            if (b.value.equals(value)) {
+                return b;
+            }
         }
-      }
     {{#isNullable}}
-      return null;
+        return null;
     {{/isNullable}}
     {{^isNullable}}
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        throw new IllegalArgumentException("Unexpected value '" + value + "'");
     {{/isNullable}}
     }
-  }
\ No newline at end of file
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/model/modelInnerEnum.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/modelInnerEnum.mustache
new file mode 100644
index 00000000000..9a1567a0ca5
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/modelInnerEnum.mustache
@@ -0,0 +1,60 @@
+    /**
+     * {{^description}}Gets or Sets {{{name}}}{{/description}}{{#description}}{{description}}{{/description}}
+     */
+{{#withXml}}
+    @XmlType(name="{{datatypeWithEnum}}")
+    @XmlEnum({{dataType}}.class)
+{{/withXml}}
+{{#additionalEnumTypeAnnotations}}
+    {{{.}}}
+{{/additionalEnumTypeAnnotations}}
+    public enum {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}} {
+    {{#allowableValues}}
+        {{#enumVars}}
+            {{#enumDescription}}
+        /**
+         * {{enumDescription}}
+         */
+            {{/enumDescription}}
+            {{#withXml}}
+        @XmlEnumValue({{#isInteger}}"{{/isInteger}}{{#isDouble}}"{{/isDouble}}{{#isLong}}"{{/isLong}}{{#isFloat}}"{{/isFloat}}{{{value}}}{{#isInteger}}"{{/isInteger}}{{#isDouble}}"{{/isDouble}}{{#isLong}}"{{/isLong}}{{#isFloat}}"{{/isFloat}})
+            {{/withXml}}
+        {{{name}}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+        {{/enumVars}}
+    {{/allowableValues}}
+
+        private {{{dataType}}} value;
+
+        {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}}({{{dataType}}} value) {
+            this.value = value;
+        }
+
+    {{#jackson}}
+        @JsonValue
+    {{/jackson}}
+        public {{{dataType}}} getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+    {{#jackson}}
+        @JsonCreator
+    {{/jackson}}
+        public static {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} fromValue({{{dataType}}} value) {
+            for ({{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}} b : {{#datatypeWithEnum}}{{{.}}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{{classname}}}{{/datatypeWithEnum}}.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+    {{#isNullable}}
+            return null;
+    {{/isNullable}}
+    {{^isNullable}}
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    {{/isNullable}}
+        }
+    }
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/oneof_interface.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/oneof_interface.mustache
similarity index 77%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model/oneof_interface.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/model/oneof_interface.mustache
index ca0a063d6d8..33c3d6530fe 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/oneof_interface.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/oneof_interface.mustache
@@ -1,7 +1,7 @@
 {{#additionalModelTypeAnnotations}}
 {{{.}}}
 {{/additionalModelTypeAnnotations}}
-{{>generatedAnnotation}}{{>model/typeInfoAnnotation}}{{>model/xmlAnnotation}}
+{{>common/generatedAnnotation}}{{>common/model/typeInfoAnnotation}}{{>common/model/xmlAnnotation}}
 public interface {{classname}} {{#vendorExtensions.x-implements}}{{#-first}}extends {{{.}}}{{/-first}}{{^-first}}, {{{.}}}{{/-first}}{{/vendorExtensions.x-implements}} {
     {{#discriminator}}
     public {{propertyType}} {{propertyGetter}}();
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/model/pojo.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/pojo.mustache
new file mode 100644
index 00000000000..8711f3f6dc7
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/pojo.mustache
@@ -0,0 +1,342 @@
+/**
+ * {{#description}}{{.}}{{/description}}{{^description}}{{classname}}{{/description}}
+ */
+{{#description}}
+@ApiModel(description = "{{{description}}}")
+{{/description}}
+{{#jackson}}
+@JsonPropertyOrder({
+  {{#vars}}
+  {{classname}}.JSON_PROPERTY_{{nameInSnakeCase}}{{^-last}},{{/-last}}
+  {{/vars}}
+})
+@JsonTypeName("{{name}}")
+{{/jackson}}
+{{#additionalModelTypeAnnotations}}
+{{{.}}}
+{{/additionalModelTypeAnnotations}}
+{{>common/generatedAnnotation}}{{#discriminator}}{{>common/model/typeInfoAnnotation}}{{/discriminator}}{{>common/model/xmlAnnotation}}{{#useBeanValidation}}
+@Introspected
+{{/useBeanValidation}}{{!
+Declare the class with extends and implements
+}}public class {{classname}} {{#parent}}extends {{{parent}}} {{/parent}}{{#vendorExtensions.x-implements}}{{#-first}}implements {{{.}}}{{/-first}}{{^-first}}, {{{.}}}{{/-first}}{{#-last}} {{/-last}}{{/vendorExtensions.x-implements}}{
+    {{#serializableModel}}
+    private static final long serialVersionUID = 1L;
+
+    {{/serializableModel}}
+    {{#vars}}
+        {{#isEnum}}
+            {{^isContainer}}
+{{>common/model/modelInnerEnum}}
+            {{/isContainer}}
+            {{#isContainer}}
+                {{#mostInnerItems}}
+{{>common/model/modelInnerEnum}}
+                {{/mostInnerItems}}
+            {{/isContainer}}
+        {{/isEnum}}
+    public static final String JSON_PROPERTY_{{nameInSnakeCase}} = "{{baseName}}";
+        {{#withXml}}
+            {{#isXmlAttribute}}
+    @XmlAttribute(name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}"
+            {{/isXmlAttribute}}
+            {{^isXmlAttribute}}
+                {{^isContainer}}
+    @XmlElement({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
+                {{/isContainer}}
+                {{#isContainer}}
+    // Is a container wrapped={{isXmlWrapped}}
+                    {{#items}}
+    // items.name={{name}} items.baseName={{baseName}} items.xmlName={{xmlName}} items.xmlNamespace={{xmlNamespace}}
+    // items.example={{example}} items.type={{dataType}}
+    @XmlElement({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
+                    {{/items}}
+                    {{#isXmlWrapped}}
+    @XmlElementWrapper({{#xmlNamespace}}namespace="{{xmlNamespace}}", {{/xmlNamespace}}name = "{{#xmlName}}{{xmlName}}{{/xmlName}}{{^xmlName}}{{baseName}}{{/xmlName}}")
+                    {{/isXmlWrapped}}
+                {{/isContainer}}
+            {{/isXmlAttribute}}
+        {{/withXml}}
+        {{#vendorExtensions.x-is-jackson-optional-nullable}}
+            {{#isContainer}}
+    private JsonNullable<{{{datatypeWithEnum}}}> {{name}} = JsonNullable.<{{{datatypeWithEnum}}}>undefined();
+            {{/isContainer}}
+            {{^isContainer}}
+    private JsonNullable<{{{datatypeWithEnum}}}> {{name}} = JsonNullable.<{{{datatypeWithEnum}}}>{{#defaultValue}}of({{{.}}}){{/defaultValue}}{{^defaultValue}}undefined(){{/defaultValue}};
+            {{/isContainer}}
+        {{/vendorExtensions.x-is-jackson-optional-nullable}}
+        {{^vendorExtensions.x-is-jackson-optional-nullable}}
+            {{#isContainer}}
+    private {{{datatypeWithEnum}}} {{name}}{{#required}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{/required}}{{^required}} = null{{/required}};
+            {{/isContainer}}
+            {{^isContainer}}
+    {{#isDiscriminator}}protected{{/isDiscriminator}}{{^isDiscriminator}}private{{/isDiscriminator}} {{{datatypeWithEnum}}} {{name}}{{#defaultValue}} = {{{.}}}{{/defaultValue}};
+            {{/isContainer}}
+        {{/vendorExtensions.x-is-jackson-optional-nullable}}
+
+    {{/vars}}
+    {{#requiredPropertiesInConstructor}}
+    public {{classname}}({{#requiredVars}}{{{datatypeWithEnum}}} {{name}}{{^-last}}, {{/-last}}{{/requiredVars}}) {
+        {{#parent}}
+        super({{#vendorExtensions.requiredParentVars}}{{name}}{{^-last}}, {{/-last}}{{/vendorExtensions.requiredParentVars}});
+        {{/parent}}
+        {{#vendorExtensions.requiredVars}}
+        this.{{name}} = {{name}};
+        {{/vendorExtensions.requiredVars}}
+    }
+
+    {{/requiredPropertiesInConstructor}}
+    {{^requiredPropertiesInConstructor}}
+    public {{classname}}() {
+        {{#parent}}
+        super();
+        {{/parent}}
+    }
+    {{/requiredPropertiesInConstructor}}
+    {{#vars}}
+        {{^isReadOnly}}
+    public {{classname}} {{name}}({{{datatypeWithEnum}}} {{name}}) {
+            {{#vendorExtensions.x-is-jackson-optional-nullable}}
+        this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{name}});
+            {{/vendorExtensions.x-is-jackson-optional-nullable}}
+            {{^vendorExtensions.x-is-jackson-optional-nullable}}
+        this.{{name}} = {{name}};
+            {{/vendorExtensions.x-is-jackson-optional-nullable}}
+        return this;
+    }
+
+            {{#isArray}}
+    public {{classname}} add{{nameInCamelCase}}Item({{{items.datatypeWithEnum}}} {{name}}Item) {
+                {{#vendorExtensions.x-is-jackson-optional-nullable}}
+        if (this.{{name}} == null || !this.{{name}}.isPresent()) {
+            this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{{defaultValue}}});
+        }
+        try {
+            this.{{name}}.get().add({{name}}Item);
+        } catch (java.util.NoSuchElementException e) {
+            // this can never happen, as we make sure above that the value is present
+        }
+        return this;
+                {{/vendorExtensions.x-is-jackson-optional-nullable}}
+                {{^vendorExtensions.x-is-jackson-optional-nullable}}
+                    {{^required}}
+        if (this.{{name}} == null) {
+            this.{{name}} = {{{defaultValue}}};
+        }
+                    {{/required}}
+        this.{{name}}.add({{name}}Item);
+        return this;
+                {{/vendorExtensions.x-is-jackson-optional-nullable}}
+    }
+
+            {{/isArray}}
+            {{#isMap}}
+    public {{classname}} put{{nameInCamelCase}}Item(String key, {{{items.datatypeWithEnum}}} {{name}}Item) {
+                {{#vendorExtensions.x-is-jackson-optional-nullable}}
+        if (this.{{name}} == null || !this.{{name}}.isPresent()) {
+            this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{{defaultValue}}});
+        }
+        try {
+            this.{{name}}.get().put(key, {{name}}Item);
+        } catch (java.util.NoSuchElementException e) {
+            // this can never happen, as we make sure above that the value is present
+        }
+    return this;
+                {{/vendorExtensions.x-is-jackson-optional-nullable}}
+                {{^vendorExtensions.x-is-jackson-optional-nullable}}
+                    {{^required}}
+        if (this.{{name}} == null) {
+            this.{{name}} = {{{defaultValue}}};
+        }
+                    {{/required}}
+        this.{{name}}.put(key, {{name}}Item);
+        return this;
+                {{/vendorExtensions.x-is-jackson-optional-nullable}}
+  }
+
+            {{/isMap}}
+        {{/isReadOnly}}
+    /**
+        {{#description}}
+     * {{description}}
+        {{/description}}
+        {{^description}}
+     * Get {{name}}
+        {{/description}}
+        {{#minimum}}
+     * minimum: {{minimum}}
+        {{/minimum}}
+        {{#maximum}}
+     * maximum: {{maximum}}
+        {{/maximum}}
+     * @return {{name}}
+     **/
+{{>common/model/beanValidation}}    @ApiModelProperty({{#example}}example = "{{{example}}}", {{/example}}{{#required}}required = {{required}}, {{/required}}value = "{{{description}}}")
+        {{#vendorExtensions.x-extra-annotation}}
+    {{{vendorExtensions.x-extra-annotation}}}
+        {{/vendorExtensions.x-extra-annotation}}
+        {{#vendorExtensions.x-is-jackson-optional-nullable}}
+{{!unannotated, Jackson would pick this up automatically and add it *in addition* to the _JsonNullable getter field}}  @JsonIgnore
+        {{/vendorExtensions.x-is-jackson-optional-nullable}}
+        {{^vendorExtensions.x-is-jackson-optional-nullable}}
+            {{#jackson}}
+{{>common/model/jackson_annotations}}{{/jackson}}{{/vendorExtensions.x-is-jackson-optional-nullable}}       public {{{datatypeWithEnum}}} {{getter}}() {
+        {{#vendorExtensions.x-is-jackson-optional-nullable}}
+            {{#isReadOnly}}
+{{! A readonly attribute doesn't have setter => jackson will set null directly if explicitly returned by API, so make sure we have an empty JsonNullable}}    if ({{name}} == null) {
+        {{name}} = JsonNullable.<{{{datatypeWithEnum}}}>{{#defaultValue}}of({{{.}}}){{/defaultValue}}{{^defaultValue}}undefined(){{/defaultValue}};
+    }
+    {{/isReadOnly}}
+        return {{name}}.orElse(null);
+        {{/vendorExtensions.x-is-jackson-optional-nullable}}
+        {{^vendorExtensions.x-is-jackson-optional-nullable}}
+        return {{name}};
+        {{/vendorExtensions.x-is-jackson-optional-nullable}}
+    }
+
+        {{#vendorExtensions.x-is-jackson-optional-nullable}}
+{{>common/model/jackson_annotations}}
+    public JsonNullable<{{{datatypeWithEnum}}}> {{getter}}_JsonNullable() {
+        return {{name}};
+    }
+
+    @JsonProperty(JSON_PROPERTY_{{nameInSnakeCase}})
+    {{#isReadOnly}}private{{/isReadOnly}}{{^isReadOnly}}public{{/isReadOnly}} void {{setter}}_JsonNullable(JsonNullable<{{{datatypeWithEnum}}}> {{name}}) {
+    {{! For getters/setters that have name differing from attribute name, we must include setter (albeit private) for jackson to be able to set the attribute}}       this.{{name}} = {{name}};
+    }
+
+        {{/vendorExtensions.x-is-jackson-optional-nullable}}
+        {{^isReadOnly}}
+            {{#jackson}}
+                {{^vendorExtensions.x-is-jackson-optional-nullable}}
+{{>common/model/jackson_annotations}}{{/vendorExtensions.x-is-jackson-optional-nullable}}{{/jackson}}{{#vendorExtensions.x-setter-extra-annotation}}       {{{vendorExtensions.x-setter-extra-annotation}}}
+{{/vendorExtensions.x-setter-extra-annotation}}       public void {{setter}}({{{datatypeWithEnum}}} {{name}}) {
+            {{#vendorExtensions.x-is-jackson-optional-nullable}}
+        this.{{name}} = JsonNullable.<{{{datatypeWithEnum}}}>of({{name}});
+            {{/vendorExtensions.x-is-jackson-optional-nullable}}
+            {{^vendorExtensions.x-is-jackson-optional-nullable}}
+        this.{{name}} = {{name}};
+            {{/vendorExtensions.x-is-jackson-optional-nullable}}
+    }
+
+        {{/isReadOnly}}
+    {{/vars}}
+    @Override
+    public boolean equals(Object o) {
+    {{#useReflectionEqualsHashCode}}
+        return EqualsBuilder.reflectionEquals(this, o, false, null, true);
+    {{/useReflectionEqualsHashCode}}
+    {{^useReflectionEqualsHashCode}}
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        {{#hasVars}}
+        {{classname}} {{classVarName}} = ({{classname}}) o;
+        return {{#vars}}{{#isByteArray}}Arrays{{/isByteArray}}{{^isByteArray}}Objects{{/isByteArray}}.equals(this.{{name}}, {{classVarName}}.{{name}}){{^-last}} &&
+            {{/-last}}{{/vars}}{{#parent}} &&
+            super.equals(o){{/parent}};
+        {{/hasVars}}
+        {{^hasVars}}
+        return {{#parent}}super.equals(o){{/parent}}{{^parent}}true{{/parent}};
+        {{/hasVars}}
+    {{/useReflectionEqualsHashCode}}
+    }
+
+    @Override
+    public int hashCode() {
+    {{#useReflectionEqualsHashCode}}
+        return HashCodeBuilder.reflectionHashCode(this);
+    {{/useReflectionEqualsHashCode}}
+    {{^useReflectionEqualsHashCode}}
+        return Objects.hash({{#vars}}{{^isByteArray}}{{name}}{{/isByteArray}}{{#isByteArray}}Arrays.hashCode({{name}}){{/isByteArray}}{{^-last}}, {{/-last}}{{/vars}}{{#parent}}{{#hasVars}}, {{/hasVars}}super.hashCode(){{/parent}});
+    {{/useReflectionEqualsHashCode}}
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class {{classname}} {\n");
+        {{#parent}}
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        {{/parent}}
+        {{#vars}}
+        sb.append("    {{name}}: ").append(toIndentedString({{name}})).append("\n");
+        {{/vars}}
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private{{#jsonb}} static{{/jsonb}} String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+    {{#parcelableModel}}
+    public void writeToParcel(Parcel out, int flags) {
+        {{#model}}
+            {{#isArray}}
+        out.writeList(this);
+            {{/isArray}}
+            {{^isArray}}
+                {{#parent}}
+        super.writeToParcel(out, flags);
+                {{/parent}}
+                {{#vars}}
+        out.writeValue({{name}});
+                {{/vars}}
+            {{/isArray}}
+        {{/model}}
+    }
+
+    {{classname}}(Parcel in) {
+        {{#isArray}}
+        in.readTypedList(this, {{arrayModelType}}.CREATOR);
+        {{/isArray}}
+        {{^isArray}}
+            {{#parent}}
+        super(in);
+            {{/parent}}
+            {{#vars}}
+                {{#isPrimitiveType}}
+        {{name}} = ({{{datatypeWithEnum}}})in.readValue(null);
+                {{/isPrimitiveType}}
+                {{^isPrimitiveType}}
+        {{name}} = ({{{datatypeWithEnum}}})in.readValue({{complexType}}.class.getClassLoader());
+                {{/isPrimitiveType}}
+            {{/vars}}
+        {{/isArray}}
+    }
+
+    public int describeContents() {
+        return 0;
+    }
+
+    public static final Parcelable.Creator<{{classname}}> CREATOR = new Parcelable.Creator<{{classname}}>() {
+        public {{classname}} createFromParcel(Parcel in) {
+        {{#model}}
+            {{#isArray}}
+      {{classname}} result = new {{classname}}();
+            result.addAll(in.readArrayList({{arrayModelType}}.class.getClassLoader()));
+            return result;
+            {{/isArray}}
+            {{^isArray}}
+            return new {{classname}}(in);
+            {{/isArray}}
+        {{/model}}
+        }
+
+        public {{classname}}[] newArray(int size) {
+            return new {{classname}}[size];
+        }
+    };
+    {{/parcelableModel}}
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/typeInfoAnnotation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/typeInfoAnnotation.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model/typeInfoAnnotation.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/model/typeInfoAnnotation.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/model/xmlAnnotation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/model/xmlAnnotation.mustache
similarity index 100%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/model/xmlAnnotation.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/model/xmlAnnotation.mustache
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/beanValidation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/params/beanValidation.mustache
similarity index 82%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/params/beanValidation.mustache
rename to modules/openapi-generator/src/main/resources/java-micronaut/common/params/beanValidation.mustache
index 6fd7a75b066..8b625ef1b93 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/params/beanValidation.mustache
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/params/beanValidation.mustache
@@ -1,8 +1,11 @@
-{{#useBeanValidation}}{{!
+{{!First handle the nullable - it should be present unless otherwise specified}}
+{{#isNullable}}@Nullable {{/isNullable}}{{^isNullable}}{{^required}}@Nullable {{/required}}{{/isNullable}}{{!
+All the validation
+}}{{#useBeanValidation}}{{!
+nullable overrides required
+}}{{^isNullable}}{{#required}}@NotNull {{/required}}{{/isNullable}}{{!
 validate all pojos and enums
 }}{{^isContainer}}{{#isModel}}@Valid {{/isModel}}{{/isContainer}}{{!
-nullable & nonnull
-}}{{#required}}@NotNull {{/required}}{{#isNullable}}@Nullable {{/isNullable}}{{!
 pattern
 }}{{#pattern}}{{^isByteArray}}@Pattern(regexp="{{{pattern}}}") {{/isByteArray}}{{/pattern}}{{!
 both minLength && maxLength
@@ -18,7 +21,7 @@ just maxLength
 @Size: just maxItems
 }}{{^minItems}}{{#maxItems}}@Size(max={{maxItems}}) {{/maxItems}}{{/minItems}}{{!
 @Email
-}}{{#isEmail}}@Email{{/isEmail}}{{!
+}}{{#isEmail}}@Email {{/isEmail}}{{!
 check for integer or long / all others=decimal type with @Decimal*
 isInteger set
 }}{{#isInteger}}{{#minimum}}@Min({{minimum}}) {{/minimum}}{{#maximum}}@Max({{maximum}}) {{/maximum}}{{/isInteger}}{{!
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/test/model_test.groovy.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/test/model_test.groovy.mustache
new file mode 100644
index 00000000000..fb94253573c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/test/model_test.groovy.mustache
@@ -0,0 +1,46 @@
+package {{package}}
+
+{{#imports}}import {{import}}
+{{/imports}}
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+{{#fullJavaUtil}}
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+{{/fullJavaUtil}}
+
+/**
+ * Model tests for {{classname}}
+ */
+@MicronautTest
+public class {{classname}}Spec extends Specification {
+    {{#models}}
+    {{#model}}
+    {{^vendorExtensions.x-is-one-of-interface}}
+    {{^isEnum}}
+    private final {{classname}} model = null
+
+    {{/isEnum}}
+    /**
+     * Model tests for {{classname}}
+     */
+    void '{{classname}} test'() {
+        // TODO: test {{classname}}
+    }
+
+    {{#allVars}}
+    /**
+     * Test the property '{{name}}'
+     */
+    void '{{classname}} property {{name}} test'() {
+        // TODO: test {{name}} property of {{classname}}
+    }
+
+    {{/allVars}}
+    {{/vendorExtensions.x-is-one-of-interface}}
+    {{/model}}
+    {{/models}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/common/test/model_test.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/common/test/model_test.mustache
new file mode 100644
index 00000000000..2a49ac94670
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/common/test/model_test.mustache
@@ -0,0 +1,49 @@
+package {{package}};
+
+{{#imports}}import {{import}};
+{{/imports}}
+import io.micronaut.test.extensions.junit5.annotation.MicronautTest;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+{{#fullJavaUtil}}
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+{{/fullJavaUtil}}
+
+/**
+ * Model tests for {{classname}}
+ */
+@MicronautTest
+public class {{classname}}Test {
+    {{#models}}
+    {{#model}}
+    {{^vendorExtensions.x-is-one-of-interface}}
+    {{^isEnum}}
+    private final {{classname}} model = null;
+
+    {{/isEnum}}
+    /**
+     * Model tests for {{classname}}
+     */
+    @Test
+    public void test{{classname}}() {
+        // TODO: test {{classname}}
+    }
+
+    {{#allVars}}
+    /**
+     * Test the property '{{name}}'
+     */
+    @Test
+    public void {{name}}Test() {
+        // TODO: test {{name}}
+    }
+
+    {{/allVars}}
+    {{/vendorExtensions.x-is-one-of-interface}}
+    {{/model}}
+    {{/models}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/controller.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/controller.mustache
new file mode 100644
index 00000000000..f1affde0c26
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/controller.mustache
@@ -0,0 +1,129 @@
+{{>common/licenseInfo}}
+package {{apiPackage}};
+
+import io.micronaut.http.annotation.*;
+import io.micronaut.core.annotation.Nullable;
+import io.micronaut.core.convert.format.Format;
+{{#useAuth}}
+import io.micronaut.security.annotation.Secured;
+import io.micronaut.security.rules.SecurityRule;
+{{/useAuth}}
+import reactor.core.publisher.Mono;
+{{#imports}}
+import {{import}};
+{{/imports}}
+import javax.annotation.Generated;
+{{^fullJavaUtil}}
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+{{#generateControllerFromExamples}}
+import java.util.Arrays;
+{{/generateControllerFromExamples}}
+{{/fullJavaUtil}}
+{{#useBeanValidation}}
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+{{/useBeanValidation}}
+import io.swagger.annotations.*;
+
+{{>common/generatedAnnotation}}
+{{^generateControllerAsAbstract}}
+@Controller("${context-path}")
+{{/generateControllerAsAbstract}}
+public {{#generateControllerAsAbstract}}abstract {{/generateControllerAsAbstract}}class {{classname}} {
+{{#operations}}
+    {{#operation}}
+    /**
+        {{#summary}}
+     * {{summary}}
+        {{/summary}}
+        {{#notes}}
+     * {{notes}}
+        {{/notes}}
+        {{^summary}}
+            {{^notes}}
+     * {{nickname}}
+            {{/notes}}
+        {{/summary}}
+     *
+        {{#allParams}}
+     * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
+        {{/allParams}}
+        {{#returnType}}
+     * @return {{returnType}}
+        {{/returnType}}
+        {{#externalDocs}}
+     * {{description}}
+     * @see <a href="{{url}}">{{summary}} Documentation</a>
+        {{/externalDocs}}
+     */
+    {{!openapi annotations for info}}
+    @ApiOperation(
+        value = "{{{summary}}}",
+        nickname = "{{{operationId}}}"{{#notes}},
+        notes = "{{{notes}}}"{{/notes}}{{#returnBaseType}},
+        response = {{{returnBaseType}}}.class{{/returnBaseType}}{{#returnContainer}},
+        responseContainer = "{{{returnContainer}}}"{{/returnContainer}},
+        authorizations = {{openbrace}}{{#hasAuthMethods}}
+        {{#authMethods}}
+            {{#isOAuth}}
+            @Authorization(value = "{{name}}"{{#scopes}}{{#-first}}, scopes = {
+                {{#scopes}}
+                @AuthorizationScope(scope = "{{scope}}", description = "{{description}}"){{^-last}},{{/-last}}
+                {{/scopes}}
+            }{{/-first}}{{/scopes}}){{^-last}},{{/-last}}
+            {{/isOAuth}}
+            {{^isOAuth}}
+            @Authorization(value = "{{name}}"){{^-last}},{{/-last}}
+            {{/isOAuth}}
+        {{/authMethods}}
+        {{/hasAuthMethods}}{{closebrace}},
+        tags={{openbrace}}{{#vendorExtensions.x-tags}}"{{tag}}"{{^-last}}, {{/-last}}{{/vendorExtensions.x-tags}}{{closebrace}})
+    {{!openapi annotations for info about responses}}
+    @ApiResponses(value = {{openbrace}}{{#responses}}
+        @ApiResponse(code = {{{code}}}, message = "{{{message}}}"{{#baseType}}, response = {{{baseType}}}.class{{/baseType}}{{#containerType}}, responseContainer = "{{{containerType}}}"{{/containerType}}){{^-last}},{{/-last}}{{/responses}}{{closebrace}})
+    {{!micronaut annotations}}
+    @{{#lambda.pascalcase}}{{#lambda.lowercase}}{{httpMethod}}{{/lambda.lowercase}}{{/lambda.pascalcase}}(uri="{{{path}}}")
+    @Produces(value = {{openbrace}}{{#produces}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/produces}}{{closebrace}})
+    {{#consumes.0}}
+    @Consumes(value = {{openbrace}}{{#consumes}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/consumes}}{{closebrace}})
+    {{/consumes.0}}
+    {{!security annotations}}
+    {{#useAuth}}
+        {{#hasAuthMethods}}
+    @Secured(SecurityRule.IS_AUTHENTICATED)
+        {{/hasAuthMethods}}
+        {{^hasAuthMethods}}
+    @Secured(SecurityRule.IS_ANONYMOUS)
+        {{/hasAuthMethods}}
+    {{/useAuth}}
+    {{!the method definition}}
+    public {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} {{nickname}}{{#generateControllerAsAbstract}}Api{{/generateControllerAsAbstract}}({{#allParams}}
+        {{>server/params/queryParams}}{{>server/params/pathParams}}{{>server/params/headerParams}}{{>server/params/bodyParams}}{{>server/params/formParams}}{{>server/params/cookieParams}}{{^-last}}, {{/-last}}{{#-last}}
+    {{/-last}}{{/allParams}}) {
+        {{^generateControllerAsAbstract}}
+{{>server/controllerOperationBody}}    }
+        {{/generateControllerAsAbstract}}
+        {{#generateControllerAsAbstract}}
+        return {{nickname}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});
+    }
+        {{/generateControllerAsAbstract}}
+    {{#generateControllerAsAbstract}}
+
+    /**
+        {{#summary}}
+     * {{summary}}
+        {{/summary}}
+     *
+     * This method will be delegated to when the controller gets a request
+     */
+    public abstract {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} {{nickname}}({{#allParams}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/allParams}});
+    {{/generateControllerAsAbstract}}
+    {{^-last}}
+
+    {{/-last}}
+    {{/operation}}
+{{/operations}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/controllerImplementation.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/controllerImplementation.mustache
new file mode 100644
index 00000000000..91e582a17b5
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/controllerImplementation.mustache
@@ -0,0 +1,34 @@
+{{>common/licenseInfo}}
+package {{controllerPackage}};
+
+import io.micronaut.http.annotation.Controller;
+import reactor.core.publisher.Mono;
+import {{package}}.{{classname}};
+{{#imports}}
+import {{import}};
+{{/imports}}
+{{^fullJavaUtil}}
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+{{#generateControllerFromExamples}}
+import java.util.Arrays;
+{{/generateControllerFromExamples}}
+{{/fullJavaUtil}}
+
+
+@Controller("${context-path}")
+public class {{controllerClassname}} extends {{classname}} {
+{{#operations}}
+    {{#operation}}
+    {{!the method definition}}
+    @Override
+    public {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} {{nickname}}({{#allParams}}{{{dataType}}} {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}) {
+{{>server/controllerOperationBody}}    }
+    {{^-last}}
+
+    {{/-last}}
+    {{/operation}}
+{{/operations}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/controllerOperationBody.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/controllerOperationBody.mustache
new file mode 100644
index 00000000000..fc374fe0993
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/controllerOperationBody.mustache
@@ -0,0 +1,17 @@
+    {{^generateControllerFromExamples}}
+        {{!The body needs to be implemented by user}}
+        // TODO implement {{nickname}}() body;
+        {{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} result = Mono.empty();
+        return result;
+    {{/generateControllerFromExamples}}
+    {{#generateControllerFromExamples}}
+        {{!The body is generated to verify that example values are passed correctly}}
+        {{#allParams}}
+            {{^isFile}}
+        {{{dataType}}} {{paramName}}Expected = {{{example}}};
+        assert {{paramName}}.equals({{paramName}}Expected) : "The parameter {{paramName}} was expected to match its example value";
+            {{/isFile}}
+        {{/allParams}}
+
+        return Mono.fromCallable(() -> {{^returnType}}""{{/returnType}}{{#returnType}}{{#vendorExtensions.example}}{{{vendorExtensions.example}}}{{/vendorExtensions.example}}{{^vendorExtensions.example}}null{{/vendorExtensions.example}}{{/returnType}});
+    {{/generateControllerFromExamples}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/doc/README.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/doc/README.mustache
new file mode 100644
index 00000000000..64887480031
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/doc/README.mustache
@@ -0,0 +1,27 @@
+# {{artifactId}}
+
+This is a generated server based on [Micronaut](https://micronaut.io/) framework.
+
+## Configuration
+
+To run the whole application, use [Application.java]({{{invokerFolder}}}/Application.java) as main class.
+
+Read **[Micronaut Guide](https://docs.micronaut.io/latest/guide/#ideSetup)** for detailed description on IDE setup and Micronaut Framework features.
+
+All the properties can be changed in the [application.yml]({{resourceFolder}}/application.yml) file or when creating micronaut application as described in **[Micronaut Guide - Configuration Section](https://docs.micronaut.io/latest/guide/#config)**.
+
+## Controller Guides
+
+Description on how to create Apis is given inside individual api guides:
+
+{{#apiInfo}}
+    {{#apis}}
+* [{{classFilename}}]({{apiDocPath}}/{{classFilename}}.md)
+    {{/apis}}
+{{/apiInfo}}
+
+## Author
+
+{{#apiInfo}}{{#apis}}{{^hasMore}}{{infoEmail}}
+{{/hasMore}}{{/apis}}{{/apiInfo}}
+
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/doc/controller_doc.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/doc/controller_doc.mustache
new file mode 100644
index 00000000000..80d49233c56
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/doc/controller_doc.mustache
@@ -0,0 +1,63 @@
+# {{classname}}{{#description}}
+{{description}}{{/description}}
+
+All URIs are relative to `"{{contextPath}}"`
+
+The controller class is defined in **[{{classname}}.java](../../{{{apiFolder}}}/{{classname}}.java)**
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+{{#operations}}
+    {{#operation}}
+[**{{operationId}}**](#{{operationId}}) | **{{httpMethod}}** {{path}} | {{#summary}}{{summary}}{{/summary}}
+    {{/operation}}
+{{/operations}}
+
+{{#operations}}
+    {{#operation}}
+<a name="{{operationId}}"></a>
+# **{{operationId}}**
+```java
+{{#returnType}}Mono<{{{returnType}}}>{{/returnType}}{{^returnType}}Mono<Object>{{/returnType}} {{classname}}.{{nickname}}({{#allParams}}{{{paramName}}}{{#hasMore}}, {{/hasMore}}{{/allParams}})
+```
+
+{{summary}}{{#notes}}
+
+{{notes}}{{/notes}}
+
+{{#allParams}}
+    {{#-last}}
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+{{#allParams}}
+**{{paramName}}** | {{^isPrimitiveType}}[**{{dataType}}**](../../{{modelDocPath}}/{{baseType}}.md){{/isPrimitiveType}}{{#isPrimitiveType}}`{{dataType}}`{{/isPrimitiveType}} | {{description}} |{{^required}} [optional parameter]{{/required}}{{#defaultValue}} [default to `{{defaultValue}}`]{{/defaultValue}}{{#allowableValues}} [enum: {{#values}}`{{{.}}}`{{^-last}}, {{/-last}}{{/values}}]{{/allowableValues}}
+{{/allParams}}
+    {{/-last}}
+{{/allParams}}
+
+{{#returnType}}
+### Return type
+    {{#returnTypeIsPrimitive}}
+`{{returnType}}`
+    {{/returnTypeIsPrimitive}}
+    {{^returnTypeIsPrimitive}}
+[**{{returnType}}**](../../{{modelDocPath}}/{{returnBaseType}}.md)
+    {{/returnTypeIsPrimitive}}
+{{/returnType}}
+
+{{#authMethods}}
+    {{#-last}}
+### Authorization
+        {{#authMethods}}
+* **{{name}}**{{#scopes}}{{#-last}}, scopes: {{#scopes}}`{{{scope}}}`{{^-last}}, {{/-last}}{{/scopes}}{{/-last}}{{/scopes}}
+        {{/authMethods}}
+    {{/-last}}
+{{/authMethods}}
+
+### HTTP request headers
+ - **Accepts Content-Type**: {{#consumes}}`{{{mediaType}}}`{{^-last}}, {{/-last}}{{/consumes}}{{^consumes}}Not defined{{/consumes}}
+ - **Produces Content-Type**: {{#produces}}`{{{mediaType}}}`{{^-last}}, {{/-last}}{{/produces}}{{^produces}}Not defined{{/produces}}
+
+    {{/operation}}
+{{/operations}}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/bodyParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/bodyParams.mustache
new file mode 100644
index 00000000000..80bca1989f6
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/bodyParams.mustache
@@ -0,0 +1,7 @@
+{{#isBodyParam}}{{!
+Multi part
+}}{{#isMultipart}}@Part("{{baseName}}"){{/isMultipart}}{{!
+Non-multipart body
+}}{{^isMultipart}}@Body{{/isMultipart}}{{!
+The type
+}} {{>common/params/beanValidation}}{{>server/params/type}} {{paramName}}{{/isBodyParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/cookieParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/cookieParams.mustache
new file mode 100644
index 00000000000..be25ae2174c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/cookieParams.mustache
@@ -0,0 +1 @@
+{{#isCookieParam}}@CookieValue(value="{{baseName}}"{{#defaultValue}}, defaultValue="{{defaultValue}}"{{/defaultValue}}) {{>common/params/beanValidation}}{{>server/params/type}} {{paramName}}{{/isCookieParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/formParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/formParams.mustache
new file mode 100644
index 00000000000..22c02d391bd
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/formParams.mustache
@@ -0,0 +1 @@
+{{#isFormParam}}{{>common/params/beanValidation}}{{>server/params/type}} {{paramName}}{{/isFormParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/headerParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/headerParams.mustache
new file mode 100644
index 00000000000..1cb2c90a910
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/headerParams.mustache
@@ -0,0 +1 @@
+{{#isHeaderParam}}@Header(value="{{baseName}}"{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{>common/params/beanValidation}}{{>server/params/type}} {{paramName}}{{/isHeaderParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/pathParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/pathParams.mustache
new file mode 100644
index 00000000000..4e2fd4c2e1a
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/pathParams.mustache
@@ -0,0 +1 @@
+{{#isPathParam}}@PathVariable(value="{{baseName}}"{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{>common/params/beanValidation}}{{>server/params/type}} {{paramName}}{{/isPathParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/queryParams.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/queryParams.mustache
new file mode 100644
index 00000000000..0ba7b460614
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/queryParams.mustache
@@ -0,0 +1 @@
+{{#isQueryParam}}@QueryValue(value="{{{baseName}}}"{{!default value}}{{#defaultValue}}, defaultValue="{{{defaultValue}}}"{{/defaultValue}}) {{!validation and type}}{{>common/params/beanValidation}}{{>server/params/type}} {{paramName}}{{/isQueryParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/params/type.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/type.mustache
new file mode 100644
index 00000000000..4d51aec1c95
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/params/type.mustache
@@ -0,0 +1,7 @@
+{{!
+default type
+}}{{^isDate}}{{^isDateTime}}{{{dataType}}}{{/isDateTime}}{{/isDate}}{{!
+date-time
+}}{{#isDateTime}}@Format("yyyy-MM-dd'T'HH:mm:ss.SSSXXXX") {{{dataType}}}{{/isDateTime}}{{!
+date
+}}{{#isDate}}@Format("yyyy-MM-dd") {{{dataType}}}{{/isDate}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/test/controller_test.groovy.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/test/controller_test.groovy.mustache
new file mode 100644
index 00000000000..44c0730cb99
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/test/controller_test.groovy.mustache
@@ -0,0 +1,185 @@
+package {{package}}
+
+{{#imports}}
+import {{import}}
+{{/imports}}
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import io.micronaut.http.client.HttpClient
+import io.micronaut.http.client.annotation.Client
+import io.micronaut.runtime.server.EmbeddedServer
+import io.micronaut.http.HttpStatus
+import io.micronaut.http.HttpRequest
+import io.micronaut.http.MutableHttpRequest;
+import io.micronaut.http.HttpResponse
+import io.micronaut.http.MediaType
+import io.micronaut.http.uri.UriTemplate
+import io.micronaut.http.cookie.Cookie
+import io.micronaut.http.client.multipart.MultipartBody
+import io.micronaut.core.type.Argument
+import jakarta.inject.Inject
+import spock.lang.Specification
+import spock.lang.Ignore
+import reactor.core.publisher.Mono
+import java.io.File
+import java.io.FileReader
+
+
+/**
+ * Controller tests for {{classname}}
+ */
+@MicronautTest
+class {{classname}}Spec extends Specification {
+
+    @Inject
+    EmbeddedServer server
+
+    @Inject
+    @Client('${context-path}')
+    HttpClient client
+
+    @Inject
+    {{classname}} controller
+
+    {{#operations}}
+    {{#operation}}
+    /**
+     * This test is used to validate the implementation of {{operationId}}() method
+     *
+     * The method should: {{summary}}
+     {{#notes}}
+     *
+     * {{notes}}
+     {{/notes}}
+     *
+     * TODO fill in the parameters and test return value.
+     */
+        {{^generateControllerFromExamples}}
+    @Ignore("Not Implemented")
+        {{/generateControllerFromExamples}}
+    def '{{operationId}}() method test'() {
+        given:
+        {{#allParams}}
+        {{{dataType}}} {{paramName}} = {{{vendorExtensions.groovyExample}}}
+        {{/allParams}}
+
+        when:
+        {{#returnType}}{{{returnType}}} result = {{/returnType}}controller.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).block()
+
+        then:
+        {{^generateControllerFromExamples}}
+        true
+        {{/generateControllerFromExamples}}
+        {{#generateControllerFromExamples}}
+            {{^returnType}}
+        true
+            {{/returnType}}
+            {{#returnType}}
+        result == {{{vendorExtensions.groovyExample}}}
+            {{/returnType}}
+        {{/generateControllerFromExamples}}
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '{{{path}}}' to the features of {{operationId}}() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+        {{^generateControllerFromExamples}}
+    @Ignore("Not Implemented")
+        {{/generateControllerFromExamples}}
+    def '{{operationId}}() test with client through path {{{path}}}'() {
+        given:
+        {{!Create the body}}
+        {{#bodyParam}}
+        {{{dataType}}} body = {{{vendorExtensions.groovyExample}}}
+        {{/bodyParam}}
+        {{#formParams.0}}
+        var form = [
+            // Fill in the body form parameters
+            {{#formParams}}
+                {{^isFile}}
+            '{{{baseName}}}': {{{vendorExtensions.groovyExample}}}{{^-last}},{{/-last}}
+                {{/isFile}}
+                {{#isFile}}
+            '{{{baseName}}}': new FileReader(File.createTempFile('test', '.tmp')){{^-last}},{{/-last}}
+                {{/isFile}}
+            {{/formParams}}
+        ]
+        {{/formParams.0}}
+        {{#isMultipart}}
+            {{^formParams}}
+        var body = MultipartBody.builder() // Create multipart body
+                {{#bodyParams}}
+                    {{^isFile}}
+            .addPart('{{{baseName}}}', {{{vendorExtensions.groovyExample}}}{{^isString}}.toString(){{/isString}})
+                    {{/isFile}}
+                    {{#isFile}}
+                        {{#contentType}}
+            .addPart('{{{baseName}}}', 'filename', MediaType.of('{{{contentType}}}'), File.createTempFile('test', '.tmp'))
+                        {{/contentType}}
+                        {{^contentType}}
+            .addPart('{{{baseName}}}', 'filename', File.createTempFile('test', '.tmp'))
+                        {{/contentType}}
+                    {{/isFile}}
+                {{/bodyParams}}
+            .build()
+            {{/formParams}}
+        {{/isMultipart}}
+        {{!Create the uri with path variables}}
+        var uri = UriTemplate.of('{{{path}}}').expand({{^pathParams}}[:]{{/pathParams}}{{#pathParams.0}}[
+            // Fill in the path variables
+        {{#pathParams}}
+            '{{{baseName}}}': {{{vendorExtensions.groovyExample}}}{{^-last}},{{/-last}}
+        {{/pathParams}}
+        ]{{/pathParams.0}})
+        {{!Create the request with body and uri}}
+        MutableHttpRequest request = HttpRequest.{{httpMethod}}{{#vendorExtensions.methodAllowsBody}}{{#bodyParam}}(uri, body){{/bodyParam}}{{#isMultipart}}{{^formParams}}(uri, body){{/formParams}}{{/isMultipart}}{{#formParams.0}}(uri, form){{/formParams.0}}{{^bodyParam}}{{^isMultipart}}{{^formParams}}(uri, null){{/formParams}}{{/isMultipart}}{{/bodyParam}}{{/vendorExtensions.methodAllowsBody}}{{^vendorExtensions.methodAllowsBody}}(uri){{/vendorExtensions.methodAllowsBody}}
+        {{!Fill in all the request parameters}}
+        {{#vendorExtensions.x-contentType}}
+            .contentType('{{vendorExtensions.x-contentType}}')
+        {{/vendorExtensions.x-contentType}}
+        {{#vendorExtensions.x-accepts}}
+            .accept('{{vendorExtensions.x-accepts}}')
+        {{/vendorExtensions.x-accepts}}
+        {{#headerParams}}
+            .header('{{{baseName}}}', {{{vendorExtensions.groovyExample}}}{{^isString}}.toString(){{/isString}})
+        {{/headerParams}}
+        {{#cookieParams}}
+            .cookie(Cookie.of('{{{baseName}}}', {{{vendorExtensions.groovyExample}}}))
+        {{/cookieParams}}
+        {{!Fill in the query parameters}}
+        {{#queryParams.0}}
+        request.getParameters()
+            {{#queryParams}}
+                {{#isCollectionFormatMulti}}
+            .add('{{{baseName}}}', {{{vendorExtensions.groovyExample}}}) // The query format should be multi
+                {{/isCollectionFormatMulti}}
+                {{#isDeepObject}}
+            .add('{{{baseName}}}[property]', 'value') // The query format should be deep-object
+                {{/isDeepObject}}
+                {{^isCollectionFormatMulti}}
+                    {{^isDeepObject}}
+            .add('{{{baseName}}}', {{{vendorExtensions.groovyExample}}}{{^isString}}.toString(){{/isString}}){{#collectionFormat}} // The query parameter format should be {{collectionFormat}}{{/collectionFormat}}
+                    {{/isDeepObject}}
+                {{/isCollectionFormatMulti}}
+            {{/queryParams}}
+        {{/queryParams.0}}
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request{{#returnType}}, {{#returnContainer}}Argument.of({{#isArray}}List{{/isArray}}{{#isMap}}Map{{/isMap}}.class, {{#isMap}}String.class, {{/isMap}}{{{returnBaseType}}}.class){{/returnContainer}}{{^returnContainer}}{{{returnType}}}.class{{/returnContainer}}{{/returnType}});{{^returnType}} // To retrieve body you must specify required type (e.g. Map.class) as second argument {{/returnType}}
+
+        then:
+        response.status() == HttpStatus.OK
+        {{#generateControllerFromExamples}}
+            {{#returnType}}
+                {{#vendorExtensions.example}}
+        response.body() == {{{vendorExtensions.groovyExample}}}
+                {{/vendorExtensions.example}}
+            {{/returnType}}
+        {{/generateControllerFromExamples}}
+    }
+
+    {{/operation}}
+    {{/operations}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut/server/test/controller_test.mustache b/modules/openapi-generator/src/main/resources/java-micronaut/server/test/controller_test.mustache
new file mode 100644
index 00000000000..2e34bd72124
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/java-micronaut/server/test/controller_test.mustache
@@ -0,0 +1,185 @@
+package {{package}};
+
+{{#imports}}
+import {{import}};
+{{/imports}}
+import io.micronaut.test.extensions.junit5.annotation.MicronautTest;
+import io.micronaut.http.client.HttpClient;
+import io.micronaut.http.client.annotation.Client;
+import io.micronaut.runtime.server.EmbeddedServer;
+import io.micronaut.http.HttpStatus;
+import io.micronaut.http.MutableHttpRequest;
+import io.micronaut.http.HttpRequest;
+import io.micronaut.http.HttpResponse;
+import io.micronaut.http.MediaType;
+import io.micronaut.http.uri.UriTemplate;
+import io.micronaut.http.cookie.Cookie;
+import io.micronaut.http.client.multipart.MultipartBody;
+import io.micronaut.core.type.Argument;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Assertions;
+import jakarta.inject.Inject;
+import reactor.core.publisher.Mono;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+{{^fullJavaUtil}}
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.HashSet;
+{{/fullJavaUtil}}
+
+
+/**
+ * API tests for {{classname}}
+ */
+@MicronautTest
+public class {{classname}}Test {
+
+    @Inject
+    EmbeddedServer server;
+
+    @Inject
+    @Client("${context-path}")
+    HttpClient client;
+
+    @Inject
+    {{classname}} controller;
+
+    {{#operations}}
+    {{#operation}}
+    /**
+     * This test is used to validate the implementation of {{operationId}}() method
+     *
+     * The method should: {{summary}}
+     {{#notes}}
+     *
+     * {{notes}}
+     {{/notes}}
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Test
+        {{^generateControllerFromExamples}}
+    @Disabled("Not Implemented")
+        {{/generateControllerFromExamples}}
+    void {{operationId}}MethodTest() {
+        // given
+        {{#allParams}}
+        {{{dataType}}} {{paramName}} = {{{example}}};
+        {{/allParams}}
+
+        // when
+        {{#returnType}}{{{returnType}}} result = {{/returnType}}controller.{{operationId}}({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).block();
+
+        // then
+        {{^generateControllerFromExamples}}
+        Assertions.assertTrue(true);
+        {{/generateControllerFromExamples}}
+        {{#generateControllerFromExamples}}
+            {{#returnType}}
+                {{#vendorExtensions.example}}
+        Assertions.assertEquals(result, {{{vendorExtensions.example}}});
+                {{/vendorExtensions.example}}
+            {{/returnType}}
+        {{/generateControllerFromExamples}}
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '{{{path}}}' to the features of {{operationId}}() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Test
+        {{^generateControllerFromExamples}}
+    @Disabled("Not Implemented")
+        {{/generateControllerFromExamples}}
+    void {{operationId}}ClientApiTest() throws IOException {
+        // given
+        {{!Create the body}}
+        {{#bodyParam}}
+        {{{dataType}}} body = {{{example}}};
+        {{/bodyParam}}
+        {{#formParams.0}}
+        Map<String, Object> form = new HashMap<String, Object>(){{openbrace}}{{openbrace}}
+            // Fill in the body form parameters
+            {{#formParams}}
+                {{^isFile}}
+            put("{{{baseName}}}", {{{example}}});
+                {{/isFile}}
+                {{#isFile}}
+            put("{{{baseName}}}", new FileReader(File.createTempFile("test", ".tmp")));
+                {{/isFile}}
+            {{/formParams}}
+        {{closebrace}}{{closebrace}};
+        {{/formParams.0}}
+        {{#isMultipart}}
+            {{^formParams}}
+        MultipartBody body = MultipartBody.builder() // Create multipart body
+                {{#bodyParams}}
+                    {{^isFile}}
+            .addPart("{{{baseName}}}", {{^isString}}String.valueOf({{/isString}}{{{example}}}{{^isString}}){{/isString}})
+                    {{/isFile}}
+                    {{#isFile}}
+                        {{#contentType}}
+            .addPart("{{{baseName}}}", "filename", MediaType.of("{{{contentType}}}"), File.createTempFile("test", ".tmp"))
+                        {{/contentType}}
+                        {{^contentType}}
+            .addPart("{{{baseName}}}", "filename", File.createTempFile("test", ".tmp"))
+                        {{/contentType}}
+                    {{/isFile}}
+                {{/bodyParams}}
+            .build();
+            {{/formParams}}
+        {{/isMultipart}}
+        {{!Create the uri with path variables}}
+        String uri = UriTemplate.of("{{{path}}}").expand(new HashMap{{^pathParams}}<>(){{/pathParams}}{{#pathParams.0}}<String, Object>(){{openbrace}}{{openbrace}}
+            // Fill in the path variables
+        {{#pathParams}}
+            put("{{{baseName}}}", {{{example}}});
+        {{/pathParams}}
+        {{closebrace}}{{closebrace}}{{/pathParams.0}});
+        {{!Create the request with body and uri}}
+        MutableHttpRequest<?> request = HttpRequest.{{httpMethod}}{{#vendorExtensions.methodAllowsBody}}{{#bodyParam}}(uri, body){{/bodyParam}}{{#isMultipart}}{{^formParams}}(uri, body){{/formParams}}{{/isMultipart}}{{#formParams.0}}(uri, form){{/formParams.0}}{{^bodyParam}}{{^isMultipart}}{{^formParams}}(uri, null){{/formParams}}{{/isMultipart}}{{/bodyParam}}{{/vendorExtensions.methodAllowsBody}}{{^vendorExtensions.methodAllowsBody}}(uri){{/vendorExtensions.methodAllowsBody}}{{!Fill in all the request parameters}}{{#vendorExtensions.x-contentType}}
+            .contentType("{{vendorExtensions.x-contentType}}"){{/vendorExtensions.x-contentType}}{{#vendorExtensions.x-accepts}}
+            .accept("{{vendorExtensions.x-accepts}}"){{/vendorExtensions.x-accepts}}{{#headerParams}}
+            .header("{{{baseName}}}", {{^isString}}String.valueOf({{/isString}}{{{example}}}{{^isString}}){{/isString}}){{/headerParams}}{{#cookieParams}}
+            .cookie(Cookie.of("{{{baseName}}}", {{{example}}})){{/cookieParams}};
+        {{!Fill in the query parameters}}
+        {{#queryParams.0}}
+        request.getParameters()
+            {{#queryParams}}
+                {{#isCollectionFormatMulti}}
+            .add("{{{baseName}}}", {{{example}}}){{#-last}};{{/-last}} // The query format should be multi
+                {{/isCollectionFormatMulti}}
+                {{#isDeepObject}}
+            .add("{{{baseName}}}[property]", "value"){{#-last}};{{/-last}} // The query format should be deep-object
+                {{/isDeepObject}}
+                {{^isCollectionFormatMulti}}
+                    {{^isDeepObject}}
+            .add("{{{baseName}}}", {{^isString}}String.valueOf({{/isString}}{{{example}}}{{^isString}}){{/isString}}){{#-last}};{{/-last}} // The query parameter format should be {{collectionFormat}}
+                    {{/isDeepObject}}
+                {{/isCollectionFormatMulti}}
+            {{/queryParams}}
+        {{/queryParams.0}}
+
+        // when
+        HttpResponse<?> response = client.toBlocking().exchange(request{{#returnType}}, {{#returnContainer}}Argument.of({{#isArray}}List{{/isArray}}{{#isMap}}Map{{/isMap}}.class, {{#isMap}}String.class, {{/isMap}}{{{returnBaseType}}}.class){{/returnContainer}}{{^returnContainer}}{{{returnType}}}.class{{/returnContainer}}{{/returnType}});{{^returnType}} // To retrieve body you must specify required type (e.g. Map.class) as second argument {{/returnType}}
+
+        // then
+        Assertions.assertEquals(HttpStatus.OK, response.status());
+        {{#generateControllerFromExamples}}
+            {{#returnType}}
+        Assertions.assertEquals(response.body(), {{{vendorExtensions.example}}});
+            {{/returnType}}
+        {{/generateControllerFromExamples}}
+    }
+
+    {{/operation}}
+    {{/operations}}
+}
diff --git a/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache b/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache
index 9ad7d579940..ead7f7e3c7d 100644
--- a/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/java-undertow-server/pom.mustache
@@ -27,11 +27,11 @@
         <version.encoder>1.2</version.encoder>
         <version.metrics>3.1.2</version.metrics>
         <version.logback>1.2.0</version.logback>
-        <version.junit>4.13</version.junit>
+        <version.junit>4.13.1</version.junit>
         <version.mockito>2.1.0-beta.124</version.mockito>
-        <version.undertow>1.4.0.Final</version.undertow>
+        <version.undertow>2.1.6.Final</version.undertow>
         <version.jsonpath>2.2.0</version.jsonpath>
-        <version.httpclient>4.5.2</version.httpclient>
+        <version.httpclient>4.5.13</version.httpclient>
         <version.httpasyncclient>4.1.2</version.httpasyncclient>
         <version.swagger>1.5.10</version.swagger>
     </properties>
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache
index 7817289fa11..1616e309ff1 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache
@@ -129,7 +129,7 @@ import {{packageName}}.infrastructure.toMultiValue
     {{#isDeprecated}}
     @Deprecated(message = "This operation is deprecated.")
     {{/isDeprecated}}
-    {{^doNotUseRxAndCoroutines}}{{#useCoroutines}}suspend {{/useCoroutines}}{{/doNotUseRxAndCoroutines}}fun {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}kotlin.collections.List<{{enumName}}_{{operationId}}>{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) : {{#returnType}}{{{returnType}}}{{#nullableReturnType}}?{{/nullableReturnType}}{{/returnType}}{{^returnType}}Unit{{/returnType}}{{^doNotUseRxAndCoroutines}}{{#useCoroutines}} = withContext(Dispatchers.IO){{/useCoroutines}}{{/doNotUseRxAndCoroutines}} {
+    {{^doNotUseRxAndCoroutines}}{{#useCoroutines}}suspend {{/useCoroutines}}{{/doNotUseRxAndCoroutines}}fun {{operationId}}({{#allParams}}{{{paramName}}}: {{#isEnum}}{{#isContainer}}kotlin.collections.List<{{enumName}}_{{operationId}}>{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) : {{#returnType}}{{{returnType}}}{{#nullableReturnType}}?{{/nullableReturnType}}{{/returnType}}{{^returnType}}Unit{{/returnType}}{{^doNotUseRxAndCoroutines}}{{#useCoroutines}} = withContext(Dispatchers.IO){{/useCoroutines}}{{/doNotUseRxAndCoroutines}} {
         {{#isDeprecated}}
         @Suppress("DEPRECATION")
         {{/isDeprecated}}
@@ -163,7 +163,7 @@ import {{packageName}}.infrastructure.toMultiValue
     {{#isDeprecated}}
     @Deprecated(message = "This operation is deprecated.")
     {{/isDeprecated}}
-    {{^doNotUseRxAndCoroutines}}{{#useCoroutines}}suspend {{/useCoroutines}}{{/doNotUseRxAndCoroutines}}fun {{operationId}}WithHttpInfo({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}kotlin.collections.List<{{enumName}}_{{operationId}}>{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) : ApiResponse<{{#returnType}}{{{returnType}}}?{{/returnType}}{{^returnType}}Unit?{{/returnType}}>{{^doNotUseRxAndCoroutines}}{{#useCoroutines}} = withContext(Dispatchers.IO){{/useCoroutines}}{{/doNotUseRxAndCoroutines}} {
+    {{^doNotUseRxAndCoroutines}}{{#useCoroutines}}suspend {{/useCoroutines}}{{/doNotUseRxAndCoroutines}}fun {{operationId}}WithHttpInfo({{#allParams}}{{{paramName}}}: {{#isEnum}}{{#isContainer}}kotlin.collections.List<{{enumName}}_{{operationId}}>{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) : ApiResponse<{{#returnType}}{{{returnType}}}?{{/returnType}}{{^returnType}}Unit?{{/returnType}}>{{^doNotUseRxAndCoroutines}}{{#useCoroutines}} = withContext(Dispatchers.IO){{/useCoroutines}}{{/doNotUseRxAndCoroutines}} {
         {{#isDeprecated}}
         @Suppress("DEPRECATION")
         {{/isDeprecated}}
@@ -183,7 +183,7 @@ import {{packageName}}.infrastructure.toMultiValue
     {{#isDeprecated}}
     @Deprecated(message = "This operation is deprecated.")
     {{/isDeprecated}}
-    fun {{operationId}}RequestConfig({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}kotlin.collections.List<{{enumName}}_{{operationId}}>{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) : RequestConfig<{{#hasBodyParam}}{{#bodyParams}}{{{dataType}}}{{/bodyParams}}{{/hasBodyParam}}{{^hasBodyParam}}{{^hasFormParams}}Unit{{/hasFormParams}}{{#hasFormParams}}Map<String, Any?>{{/hasFormParams}}{{/hasBodyParam}}> {
+    fun {{operationId}}RequestConfig({{#allParams}}{{{paramName}}}: {{#isEnum}}{{#isContainer}}kotlin.collections.List<{{enumName}}_{{operationId}}>{{/isContainer}}{{^isContainer}}{{enumName}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}?{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) : RequestConfig<{{#hasBodyParam}}{{#bodyParams}}{{{dataType}}}{{/bodyParams}}{{/hasBodyParam}}{{^hasBodyParam}}{{^hasFormParams}}Unit{{/hasFormParams}}{{#hasFormParams}}Map<String, Any?>{{/hasFormParams}}{{/hasBodyParam}}> {
         val localVariableBody = {{#hasBodyParam}}{{#bodyParams}}{{{paramName}}}{{/bodyParams}}{{/hasBodyParam}}{{^hasBodyParam}}{{^hasFormParams}}null{{/hasFormParams}}{{#hasFormParams}}mapOf({{#formParams}}"{{{baseName}}}" to {{{paramName}}}{{^-last}}, {{/-last}}{{/formParams}}){{/hasFormParams}}{{/hasBodyParam}}
         val localVariableQuery: MultiValueMap = {{^hasQueryParams}}mutableMapOf()
 {{/hasQueryParams}}{{#hasQueryParams}}mutableMapOf<kotlin.String, kotlin.collections.List<kotlin.String>>()
@@ -217,7 +217,7 @@ import {{packageName}}.infrastructure.toMultiValue
 
         return RequestConfig(
             method = RequestMethod.{{httpMethod}},
-            path = "{{path}}"{{#pathParams}}.replace("{"+"{{baseName}}"+"}", "${{{paramName}}}"){{/pathParams}},
+            path = "{{path}}"{{#pathParams}}.replace("{"+"{{baseName}}"+"}", {{#isContainer}}{{paramName}}.joinToString(","){{/isContainer}}{{^isContainer}}"${{{paramName}}}"{{/isContainer}}){{/pathParams}},
             query = localVariableQuery,
             headers = localVariableHeaders,
             body = localVariableBody
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/infrastructure/ApiClient.kt.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/infrastructure/ApiClient.kt.mustache
index 3d0c640bf6a..248dc3718a4 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/infrastructure/ApiClient.kt.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/infrastructure/ApiClient.kt.mustache
@@ -3,7 +3,6 @@ package {{packageName}}.infrastructure
 {{#hasOAuthMethods}}
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.AuthenticationRequestBuilder
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.TokenRequestBuilder
-import {{packageName}}.auth.ApiKeyAuth
 import {{packageName}}.auth.OAuth
 import {{packageName}}.auth.OAuth.AccessTokenListener
 import {{packageName}}.auth.OAuthFlow
@@ -18,6 +17,9 @@ import {{packageName}}.auth.HttpBasicAuth
 import {{packageName}}.auth.HttpBearerAuth
 {{/isBasicBearer}}
 {{/isBasic}}
+{{#isApiKey}}
+import {{packageName}}.auth.ApiKeyAuth
+{{/isApiKey}}
 {{/authMethods}}
 {{/hasAuthMethods}}
 
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/model_room_init_var.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/model_room_init_var.mustache
index 01896d2439f..3e6f299d3d6 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/model_room_init_var.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/model_room_init_var.mustache
@@ -1 +1 @@
-{{#isNullable}}?{{/isNullable}}{{^required}}?{{/required}}{{#defaultvalue}} = {{defaultvalue}}{{/defaultvalue}}{{^defaultvalue}}{{#isNullable}} = null{{/isNullable}}{{^required}} = null{{/required}}{{/defaultvalue}}
\ No newline at end of file
+{{#isNullable}}?{{/isNullable}}{{^required}}{{^isNullable}}?{{/isNullable}}{{/required}}{{#defaultvalue}} = {{defaultvalue}}{{/defaultvalue}}{{^defaultvalue}}{{#isNullable}} = null{{/isNullable}}{{^required}}{{^isNullable}} = null{{/isNullable}}{{/required}}{{/defaultvalue}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/additionalModelTypeAnnotations.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/additionalModelTypeAnnotations.mustache
new file mode 100644
index 00000000000..f4871c02cc2
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/additionalModelTypeAnnotations.mustache
@@ -0,0 +1,2 @@
+{{#additionalModelTypeAnnotations}}{{{.}}}
+{{/additionalModelTypeAnnotations}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/api.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/api.mustache
new file mode 100644
index 00000000000..2d716bd7fdf
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/api.mustache
@@ -0,0 +1,31 @@
+package {{package}};
+
+{{#imports}}import {{import}}
+{{/imports}}
+
+import javax.ws.rs.*
+import javax.ws.rs.core.Response
+
+{{#useSwaggerAnnotations}}
+import io.swagger.annotations.*
+{{/useSwaggerAnnotations}}
+
+import java.io.InputStream
+import java.util.Map
+import java.util.List
+{{#useBeanValidation}}import javax.validation.constraints.*
+import javax.validation.Valid{{/useBeanValidation}}
+
+{{#useSwaggerAnnotations}}
+@Api(description = "the {{{baseName}}} API"){{/useSwaggerAnnotations}}{{#hasConsumes}}
+@Consumes({ {{#consumes}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/consumes}} }){{/hasConsumes}}{{#hasProduces}}
+@Produces({ {{#produces}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/produces}} }){{/hasProduces}}
+@Path("/")
+{{>generatedAnnotation}}{{#interfaceOnly}}interface{{/interfaceOnly}}{{^interfaceOnly}}class{{/interfaceOnly}} {{classname}} {
+{{#operations}}
+{{#operation}}
+
+{{#interfaceOnly}}{{>apiInterface}}{{/interfaceOnly}}{{^interfaceOnly}}{{>apiMethod}}{{/interfaceOnly}}
+{{/operation}}
+}
+{{/operations}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/apiInterface.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/apiInterface.mustache
new file mode 100644
index 00000000000..d64ab757938
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/apiInterface.mustache
@@ -0,0 +1,13 @@
+    @{{httpMethod}}
+    @Path("{{{path}}}"){{#hasConsumes}}
+    @Consumes({{#consumes}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/consumes}}){{/hasConsumes}}{{#hasProduces}}
+    @Produces({{#produces}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/produces}}){{/hasProduces}}{{#useSwaggerAnnotations}}
+    @ApiOperation(value = "{{{summary}}}", notes = "{{{notes}}}"{{#hasAuthMethods}}, authorizations = {
+        {{#authMethods}}{{#isOAuth}}@Authorization(value = "{{name}}", scopes = {
+            {{#scopes}}@AuthorizationScope(scope = "{{scope}}", description = "{{description}}"){{^-last}},
+            {{/-last}}{{/scopes}} }){{^-last}},{{/-last}}{{/isOAuth}}
+        {{^isOAuth}}@Authorization(value = "{{name}}"){{^-last}},{{/-last}}
+        {{/isOAuth}}{{/authMethods}} }{{/hasAuthMethods}}, tags={ {{#vendorExtensions.x-tags}}"{{tag}}"{{^-last}}, {{/-last}}{{/vendorExtensions.x-tags}} })
+    @ApiResponses(value = { {{#responses}}
+        @ApiResponse(code = {{{code}}}, message = "{{{message}}}", response = {{{baseType}}}.class{{#returnContainer}}, responseContainer = "{{{.}}}"{{/returnContainer}}){{^-last}},{{/-last}}{{/responses}} }){{/useSwaggerAnnotations}}
+    {{#useCoroutines}}suspend {{/useCoroutines}}fun {{nickname}}({{#allParams}}{{>queryParams}}{{>pathParams}}{{>headerParams}}{{>bodyParams}}{{>formParams}}{{^-last}},{{/-last}}{{/allParams}}){{#returnResponse}}: Response{{/returnResponse}}{{^returnResponse}}{{#returnType}}: {{{returnType}}}{{/returnType}}{{/returnResponse}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/apiMethod.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/apiMethod.mustache
new file mode 100644
index 00000000000..bfe70607f17
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/apiMethod.mustache
@@ -0,0 +1,16 @@
+    @{{httpMethod}}{{#subresourceOperation}}
+    @Path("{{{path}}}"){{/subresourceOperation}}{{#hasConsumes}}
+    @Consumes({{#consumes}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/consumes}}){{/hasConsumes}}{{#hasProduces}}
+    @Produces({{#produces}}"{{{mediaType}}}"{{^-last}}, {{/-last}}{{/produces}}){{/hasProduces}}{{#useSwaggerAnnotations}}
+    @ApiOperation(value = "{{{summary}}}", notes = "{{{notes}}}", response = {{{returnBaseType}}}.class{{#returnContainer}}, responseContainer = "{{{.}}}"{{/returnContainer}}{{#hasAuthMethods}}, authorizations = {
+        {{#authMethods}}{{#isOAuth}}@Authorization(value = "{{name}}", scopes = {
+            {{#scopes}}@AuthorizationScope(scope = "{{scope}}", description = "{{description}}"){{^-last}},
+            {{/-last}}{{/scopes}} }){{^-last}},{{/-last}}{{/isOAuth}}
+        {{^isOAuth}}@Authorization(value = "{{name}}"){{^-last}},{{/-last}}
+        {{/isOAuth}}{{/authMethods}} }{{/hasAuthMethods}}, tags={ {{#vendorExtensions.x-tags}}"{{tag}}"{{^-last}}, {{/-last}}{{/vendorExtensions.x-tags}} })
+    @ApiResponses(value = { {{#responses}}
+        @ApiResponse(code = {{{code}}}, message = "{{{message}}}", response = {{{baseType}}}.class{{#containerType}}, responseContainer = "{{{.}}}"{{/containerType}}){{^-last}},{{/-last}}{{/responses}}
+    }){{/useSwaggerAnnotations}}
+    {{#useCoroutines}}suspend {{/useCoroutines}}fun {{nickname}}({{#allParams}}{{>queryParams}}{{>pathParams}}{{>cookieParams}}{{>headerParams}}{{>bodyParams}}{{>formParams}}{{^-last}},{{/-last}}{{/allParams}}): Response {
+        return Response.ok().entity("magic!").build();
+    }
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidation.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidation.mustache
new file mode 100644
index 00000000000..ef7ab3fb7a9
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidation.mustache
@@ -0,0 +1,5 @@
+    @Valid
+{{#required}}
+    @NotNull
+{{/required}}
+{{>beanValidationCore}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationCore.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationCore.mustache
new file mode 100644
index 00000000000..d6e2f13b457
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationCore.mustache
@@ -0,0 +1,20 @@
+{{#pattern}} @Pattern(regexp="{{{.}}}"){{/pattern}}{{!
+minLength && maxLength set
+}}{{#minLength}}{{#maxLength}} @Size(min={{minLength}},max={{maxLength}}){{/maxLength}}{{/minLength}}{{!
+minLength set, maxLength not
+}}{{#minLength}}{{^maxLength}} @Size(min={{minLength}}){{/maxLength}}{{/minLength}}{{!
+minLength not set, maxLength set
+}}{{^minLength}}{{#maxLength}} @Size(max={{.}}){{/maxLength}}{{/minLength}}{{!
+@Size: minItems && maxItems set
+}}{{#minItems}}{{#maxItems}} @Size(min={{minItems}},max={{maxItems}}){{/maxItems}}{{/minItems}}{{!
+@Size: minItems set, maxItems not
+}}{{#minItems}}{{^maxItems}} @Size(min={{minItems}}){{/maxItems}}{{/minItems}}{{!
+@Size: minItems not set && maxItems set
+}}{{^minItems}}{{#maxItems}} @Size(max={{.}}){{/maxItems}}{{/minItems}}{{!
+check for integer or long / all others=decimal type with @Decimal*
+isInteger set
+}}{{#isInteger}}{{#minimum}} @Min({{.}}){{/minimum}}{{#maximum}} @Max({{.}}){{/maximum}}{{/isInteger}}{{!
+isLong set
+}}{{#isLong}}{{#minimum}} @Min({{.}}L){{/minimum}}{{#maximum}} @Max({{.}}L){{/maximum}}{{/isLong}}{{!
+Not Integer, not Long => we have a decimal value!
+}}{{^isInteger}}{{^isLong}}{{#minimum}} @DecimalMin({{#exclusiveMinimum}}value={{/exclusiveMinimum}}"{{minimum}}"{{#exclusiveMinimum}},inclusive=false{{/exclusiveMinimum}}){{/minimum}}{{#maximum}} @DecimalMax({{#exclusiveMaximum}}value={{/exclusiveMaximum}}"{{maximum}}"{{#exclusiveMaximum}},inclusive=false{{/exclusiveMaximum}}){{/maximum}}{{/isLong}}{{/isInteger}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationHeaderParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationHeaderParams.mustache
new file mode 100644
index 00000000000..c4ff01d7e55
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationHeaderParams.mustache
@@ -0,0 +1 @@
+{{#required}} @NotNull{{/required}}{{>beanValidationCore}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationPathParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationPathParams.mustache
new file mode 100644
index 00000000000..051bd53c0a5
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationPathParams.mustache
@@ -0,0 +1 @@
+{{! PathParam is always required, no @NotNull necessary }}{{>beanValidationCore}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationQueryParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationQueryParams.mustache
new file mode 100644
index 00000000000..c4ff01d7e55
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/beanValidationQueryParams.mustache
@@ -0,0 +1 @@
+{{#required}} @NotNull{{/required}}{{>beanValidationCore}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/bodyParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/bodyParams.mustache
new file mode 100644
index 00000000000..ba9197f35a4
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/bodyParams.mustache
@@ -0,0 +1 @@
+{{#isBodyParam}}{{#useBeanValidation}}@Valid {{#required}}{{^isNullable}}@NotNull {{/isNullable}}{{/required}}{{/useBeanValidation}} {{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{/isBodyParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/build.gradle.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/build.gradle.mustache
new file mode 100644
index 00000000000..639084ec35b
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/build.gradle.mustache
@@ -0,0 +1,57 @@
+group "{{groupId}}"
+version "{{artifactVersion}}"
+
+wrapper {
+    gradleVersion = "6.9"
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = "1.4.32"
+    ext.jakarta_ws_rs_version = "2.1.6"
+    ext.swagger_annotations_version = "1.5.3"
+    ext.jakarta_annotations_version = "1.3.5"
+    ext.jackson_version = "2.9.9"
+{{#useBeanValidation}}
+    ext.beanvalidation_version = "2.0.2"
+{{/useBeanValidation}}
+    repositories {
+        maven { url "https://repo1.maven.org/maven2" }
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+    }
+}
+
+apply plugin: "java"
+apply plugin: "kotlin"
+apply plugin: "application"
+
+sourceCompatibility = 1.8
+
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+repositories {
+    maven { setUrl("https://repo1.maven.org/maven2") }
+}
+
+dependencies {
+    implementation("org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version")
+    implementation("ch.qos.logback:logback-classic:1.2.1")
+    implementation("jakarta.ws.rs:jakarta.ws.rs-api:$jakarta_ws_rs_version")
+    implementation("jakarta.annotation:jakarta.annotation-api:$jakarta_annotations_version")
+    implementation("io.swagger:swagger-annotations:$swagger_annotations_version")
+    implementation("com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version")
+    implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version")
+{{#useBeanValidation}}
+    implementation("jakarta.validation:jakarta.validation-api:$beanvalidation_version")
+{{/useBeanValidation}}
+    testImplementation("junit:junit:4.13.2")
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache
new file mode 100644
index 00000000000..eda2d526ebd
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache
@@ -0,0 +1 @@
+{{#isCookieParam}}@CookieParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{^isContainer}}{{#defaultValue}} @DefaultValue("{{{.}}}"){{/defaultValue}}{{/isContainer}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{/isCookieParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class.mustache
new file mode 100644
index 00000000000..c0fdd457ba7
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class.mustache
@@ -0,0 +1,73 @@
+import com.fasterxml.jackson.annotation.JsonProperty
+{{#kotlinx_serialization}}
+import {{#serializableModel}}kotlinx.serialization.Serializable as KSerializable{{/serializableModel}}{{^serializableModel}}kotlinx.serialization.Serializable{{/serializableModel}}
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Contextual
+{{#hasEnums}}
+{{/hasEnums}}
+{{/kotlinx_serialization}}
+{{#parcelizeModels}}
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+{{/parcelizeModels}}
+{{#serializableModel}}
+import java.io.Serializable
+{{/serializableModel}}
+/**
+ * {{{description}}}
+ *
+{{#allVars}}
+ * @param {{{name}}} {{{description}}}
+{{/allVars}}
+ */
+{{#parcelizeModels}}
+@Parcelize
+{{/parcelizeModels}}
+{{#multiplatform}}{{^discriminator}}@Serializable{{/discriminator}}{{/multiplatform}}{{#kotlinx_serialization}}{{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}@Serializable{{/serializableModel}}{{/kotlinx_serialization}}{{#moshi}}{{#moshiCodeGen}}@JsonClass(generateAdapter = true){{/moshiCodeGen}}{{/moshi}}{{#jackson}}{{#discriminator}}{{>typeInfoAnnotation}}{{/discriminator}}{{/jackson}}
+{{#isDeprecated}}
+@Deprecated(message = "This schema is deprecated.")
+{{/isDeprecated}}
+{{>additionalModelTypeAnnotations}}
+{{#nonPublicApi}}internal {{/nonPublicApi}}{{#discriminator}}interface{{/discriminator}}{{^discriminator}}data class{{/discriminator}} {{classname}}{{^discriminator}} (
+
+{{#allVars}}
+{{#required}}{{>data_class_req_var}}{{/required}}{{^required}}{{>data_class_opt_var}}{{/required}}{{^-last}},{{/-last}}
+
+{{/allVars}}
+){{/discriminator}}{{#parent}}{{^serializableModel}}{{^parcelizeModels}} : {{{parent}}}{{#isMap}}(){{/isMap}}{{#isArray}}(){{/isArray}}{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{#parent}}{{#serializableModel}}{{^parcelizeModels}} : {{{parent}}}{{#isMap}}(){{/isMap}}{{#isArray}}(){{/isArray}}, Serializable{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{#parent}}{{^serializableModel}}{{#parcelizeModels}} : {{{parent}}}{{#isMap}}(){{/isMap}}{{#isArray}}(){{/isArray}}, Parcelable{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{#parent}}{{#serializableModel}}{{#parcelizeModels}} : {{{parent}}}{{#isMap}}(){{/isMap}}{{#isArray}}(){{/isArray}}, Serializable, Parcelable{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{^parent}}{{#serializableModel}}{{^parcelizeModels}} : Serializable{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{^parent}}{{^serializableModel}}{{#parcelizeModels}} : Parcelable{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{^parent}}{{#serializableModel}}{{#parcelizeModels}} : Serializable, Parcelable{{/parcelizeModels}}{{/serializableModel}}{{/parent}}{{#vendorExtensions.x-has-data-class-body}} {
+{{/vendorExtensions.x-has-data-class-body}}
+{{#serializableModel}}
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
+        private const val serialVersionUID: Long = 123
+    }
+{{/serializableModel}}
+{{#discriminator}}{{#vars}}{{#required}}
+{{>interface_req_var}}{{/required}}{{^required}}
+{{>interface_opt_var}}{{/required}}{{/vars}}{{/discriminator}}
+{{#hasEnums}}
+{{#vars}}
+{{#isEnum}}
+    /**
+     * {{{description}}}
+     *
+     * Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
+     */
+    {{#kotlinx_serialization}}
+    {{#serializableModel}}@KSerializable{{/serializableModel}}{{^serializableModel}}@Serializable{{/serializableModel}}
+    {{/kotlinx_serialization}}
+    {{#nonPublicApi}}internal {{/nonPublicApi}}enum class {{{nameInCamelCase}}}(val value: {{^isContainer}}{{dataType}}{{/isContainer}}{{#isContainer}}kotlin.String{{/isContainer}}) {
+    {{#allowableValues}}
+    {{#enumVars}}
+        @JsonProperty(value = {{^isString}}"{{/isString}}{{{value}}}{{^isString}}"{{/isString}}) {{&name}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+        {{#kotlinx_serialization}}
+        @SerialName(value = {{^isString}}"{{/isString}}{{{value}}}{{^isString}}"{{/isString}}) {{&name}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+        {{/kotlinx_serialization}}
+    {{/enumVars}}
+    {{/allowableValues}}
+    }
+{{/isEnum}}
+{{/vars}}
+{{/hasEnums}}
+{{#vendorExtensions.x-has-data-class-body}}
+}
+{{/vendorExtensions.x-has-data-class-body}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class_opt_var.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class_opt_var.mustache
new file mode 100644
index 00000000000..d99ccd902fa
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class_opt_var.mustache
@@ -0,0 +1,6 @@
+{{#description}}
+    /* {{{.}}} */
+{{/description}}
+
+    @JsonProperty("{{{baseName}}}")
+{{#useBeanValidation}}{{>beanValidation}}{{/useBeanValidation}}    {{>modelMutable}} {{{name}}}: {{#isEnum}}{{classname}}.{{nameInCamelCase}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}? = {{{defaultValue}}}{{^defaultValue}}null{{/defaultValue}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class_req_var.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class_req_var.mustache
new file mode 100644
index 00000000000..5c69ae13e51
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/data_class_req_var.mustache
@@ -0,0 +1,6 @@
+{{#description}}
+    /* {{{.}}} */
+{{/description}}
+
+    @JsonProperty("{{{baseName}}}")
+{{#useBeanValidation}}{{>beanValidation}}{{/useBeanValidation}}    {{>modelMutable}} {{{name}}}: {{#isEnum}}{{classname}}.{{nameInCamelCase}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/enum_class.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/enum_class.mustache
new file mode 100644
index 00000000000..005b9daa596
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/enum_class.mustache
@@ -0,0 +1,58 @@
+import com.fasterxml.jackson.annotation.JsonProperty
+{{#kotlinx_serialization}}
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+{{/kotlinx_serialization}}
+
+/**
+ * {{{description}}}
+ *
+ * Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
+ */
+{{#kotlinx_serialization}}@Serializable{{/kotlinx_serialization}}
+{{>additionalModelTypeAnnotations}}
+{{#nonPublicApi}}internal {{/nonPublicApi}}enum class {{classname}}(val value: {{{dataType}}}) {
+{{#allowableValues}}{{#enumVars}}
+    @JsonProperty(value = {{^isString}}"{{/isString}}{{{value}}}{{^isString}}"{{/isString}})
+    {{#kotlinx_serialization}}
+    @SerialName(value = {{^isString}}"{{/isString}}{{{value}}}{{^isString}}"{{/isString}})
+    {{/kotlinx_serialization}}
+    {{#isArray}}
+    {{#isList}}
+    {{&name}}(listOf({{{value}}})){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+    {{/isList}}
+    {{^isList}}
+    {{&name}}(arrayOf({{{value}}})){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+    {{/isList}}
+    {{/isArray}}
+    {{^isArray}}
+    {{&name}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
+    {{/isArray}}
+{{/enumVars}}{{/allowableValues}}
+    /**
+     * Override toString() to avoid using the enum variable name as the value, and instead use
+     * the actual value defined in the API spec file.
+     *
+     * This solves a problem when the variable name and its value are different, and ensures that
+     * the client sends the correct enum values to the server always.
+     */
+    override fun toString(): String = value{{^isString}}.toString(){{/isString}}
+
+    companion object {
+        /**
+         * Converts the provided [data] to a [String] on success, null otherwise.
+         */
+        fun encode(data: Any?): kotlin.String? = if (data is {{classname}}) "$data" else null
+
+        /**
+         * Returns a valid [{{classname}}] for [data], null otherwise.
+         */
+        @OptIn(ExperimentalStdlibApi::class)
+        fun decode(data: Any?): {{classname}}? = data?.let {
+          val normalizedData = "$it".lowercase()
+          values().firstOrNull { value ->
+            it == value || normalizedData == "$value".lowercase()
+          }
+        }
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/enum_outer_doc.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/enum_doc.mustache
similarity index 70%
rename from modules/openapi-generator/src/main/resources/java-micronaut-client/doc/enum_outer_doc.mustache
rename to modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/enum_doc.mustache
index 20c512aaeae..fcb3d7e61aa 100644
--- a/modules/openapi-generator/src/main/resources/java-micronaut-client/doc/enum_outer_doc.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/enum_doc.mustache
@@ -3,5 +3,5 @@
 ## Enum
 
 {{#allowableValues}}{{#enumVars}}
-* `{{name}}` (value: `{{{value}}}`)
+    * `{{name}}` (value: `{{{value}}}`)
 {{/enumVars}}{{/allowableValues}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/formParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/formParams.mustache
new file mode 100644
index 00000000000..5427f037ae0
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/formParams.mustache
@@ -0,0 +1 @@
+{{#isFormParam}}{{^isFile}}@FormParam(value = "{{baseName}}") {{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{/isFile}}{{#isFile}} @FormParam(value = "{{baseName}}") {{paramName}}InputStream: InputStream{{^required}}?{{/required}}{{/isFile}}{{/isFormParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/generatedAnnotation.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/generatedAnnotation.mustache
new file mode 100644
index 00000000000..624b44019ad
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/generatedAnnotation.mustache
@@ -0,0 +1 @@
+@javax.annotation.Generated(value = arrayOf("{{generatorClass}}"){{^hideGenerationTimestamp}}, date = "{{generatedDate}}"{{/hideGenerationTimestamp}})
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/gradle.properties b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/gradle.properties
new file mode 100644
index 00000000000..5f1ed7bbe02
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/gradle.properties
@@ -0,0 +1 @@
+org.gradle.caching=true
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/headerParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/headerParams.mustache
new file mode 100644
index 00000000000..980d55c7e51
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/headerParams.mustache
@@ -0,0 +1 @@
+{{#isHeaderParam}}@HeaderParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationHeaderParams}}{{/useBeanValidation}} {{#defaultValue}} @DefaultValue("{{{.}}}"){{/defaultValue}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{/isHeaderParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/model.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/model.mustache
new file mode 100644
index 00000000000..03eecdc64ac
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/model.mustache
@@ -0,0 +1,14 @@
+{{>licenseInfo}}
+package {{modelPackage}}
+
+{{#imports}}import {{import}}
+{{/imports}}
+{{#useBeanValidation}}
+import javax.validation.constraints.*
+import javax.validation.Valid
+{{/useBeanValidation}}
+{{#models}}
+{{#model}}
+{{#isEnum}}{{>enum_class}}{{/isEnum}}{{^isEnum}}{{#oneOf}}{{>oneof_model}}{{/oneOf}}{{^oneOf}}{{#isAlias}}typealias {{classname}} = {{{dataType}}}{{/isAlias}}{{^isAlias}}{{>data_class}}{{/isAlias}}{{/oneOf}}{{/isEnum}}
+{{/model}}
+{{/models}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/model_doc.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/model_doc.mustache
new file mode 100644
index 00000000000..e3b71842118
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/model_doc.mustache
@@ -0,0 +1,3 @@
+{{#models}}{{#model}}
+{{#isEnum}}{{>enum_doc}}{{/isEnum}}{{^isEnum}}{{>class_doc}}{{/isEnum}}
+{{/model}}{{/models}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/oneof_model.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/oneof_model.mustache
new file mode 100644
index 00000000000..83c841f5600
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/oneof_model.mustache
@@ -0,0 +1,3 @@
+{{#-first}}
+typealias {{classname}} = Any
+{{/-first}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache
new file mode 100644
index 00000000000..7839f91302b
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache
@@ -0,0 +1 @@
+{{#isPathParam}}@PathParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationPathParams}}{{/useBeanValidation}}{{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{/isPathParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache
new file mode 100644
index 00000000000..91a0dfdb664
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache
@@ -0,0 +1 @@
+{{#isQueryParam}}@QueryParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{^isContainer}}{{#defaultValue}} @DefaultValue("{{{.}}}"){{/defaultValue}}{{/isContainer}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}}  {{paramName}}: {{{dataType}}}{{^required}}?{{/required}}{{/isQueryParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-spring/dataClass.mustache b/modules/openapi-generator/src/main/resources/kotlin-spring/dataClass.mustache
index c13105bcf59..17191e94dd5 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-spring/dataClass.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-spring/dataClass.mustache
@@ -11,7 +11,7 @@
 {{/-last}}{{/requiredVars}}{{#hasRequired}}{{#hasOptional}},
 {{/hasOptional}}{{/hasRequired}}{{#optionalVars}}{{>dataClassOptVar}}{{^-last}},
 {{/-last}}{{/optionalVars}}
-) {{/discriminator}}{{#parent}}: {{{.}}}(){{/parent}}{
+) {{/discriminator}}{{#parent}}: {{{.}}}{{/parent}}{
 {{#discriminator}}
     {{#requiredVars}}
         {{>interfaceReqVar}}
@@ -25,7 +25,7 @@
     * {{{description}}}
     * Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
     */
-    enum class {{nameInCamelCase}}(val value: {{#isContainer}}{{#items}}{{{dataType}}}{{/items}}{{/isContainer}}{{^isContainer}}{{{dataType}}}{{/isContainer}}) {
+    enum class {{{nameInCamelCase}}}(val value: {{#isContainer}}{{#items}}{{{dataType}}}{{/items}}{{/isContainer}}{{^isContainer}}{{{dataType}}}{{/isContainer}}) {
     {{#allowableValues}}{{#enumVars}}
         @JsonProperty({{{value}}}) {{{name}}}({{{value}}}){{^-last}},{{/-last}}{{#-last}};{{/-last}}
     {{/enumVars}}{{/allowableValues}}
diff --git a/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassOptVar.mustache b/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassOptVar.mustache
index ea669760004..64b91fd260e 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassOptVar.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassOptVar.mustache
@@ -1,4 +1,4 @@
 {{#useBeanValidation}}{{>beanValidation}}{{>beanValidationModel}}{{/useBeanValidation}}{{#swaggerAnnotations}}
     @ApiModelProperty({{#example}}example = "{{{.}}}", {{/example}}{{#isReadOnly}}readOnly = {{{isReadOnly}}}, {{/isReadOnly}}value = "{{{description}}}"){{/swaggerAnnotations}}{{#deprecated}}
     @Deprecated(message = ""){{/deprecated}}
-    @field:JsonProperty("{{{baseName}}}"){{#isInherited}} override{{/isInherited}} {{>modelMutable}} {{{name}}}: {{#isEnum}}{{#isArray}}{{baseType}}<{{/isArray}}{{classname}}.{{nameInCamelCase}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}? = {{{defaultValue}}}{{^defaultValue}}null{{/defaultValue}}
\ No newline at end of file
+    @field:JsonProperty("{{{baseName}}}"){{#isInherited}} override{{/isInherited}} {{>modelMutable}} {{{name}}}: {{#isEnum}}{{#isArray}}{{baseType}}<{{/isArray}}{{classname}}.{{{nameInCamelCase}}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}? = {{{defaultValue}}}{{^defaultValue}}null{{/defaultValue}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassReqVar.mustache b/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassReqVar.mustache
index 33e838a43fb..d69a07dd85a 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassReqVar.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-spring/dataClassReqVar.mustache
@@ -1,3 +1,3 @@
 {{#useBeanValidation}}{{>beanValidation}}{{>beanValidationModel}}{{/useBeanValidation}}{{#swaggerAnnotations}}
     @ApiModelProperty({{#example}}example = "{{{.}}}", {{/example}}required = true, {{#isReadOnly}}readOnly = {{{isReadOnly}}}, {{/isReadOnly}}value = "{{{description}}}"){{/swaggerAnnotations}}
-    @field:JsonProperty("{{{baseName}}}", required = true){{#isInherited}} override{{/isInherited}} {{>modelMutable}} {{{name}}}: {{#isEnum}}{{#isArray}}{{baseType}}<{{/isArray}}{{classname}}.{{nameInCamelCase}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{#isReadOnly}}?{{/isReadOnly}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{#isReadOnly}}{{^defaultValue}} = null{{/defaultValue}}{{/isReadOnly}}
\ No newline at end of file
+    @field:JsonProperty("{{{baseName}}}", required = true){{#isInherited}} override{{/isInherited}} {{>modelMutable}} {{{name}}}: {{#isEnum}}{{#isArray}}{{baseType}}<{{/isArray}}{{classname}}.{{{nameInCamelCase}}}{{#isArray}}>{{/isArray}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{#isReadOnly}}?{{/isReadOnly}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{#isReadOnly}}{{^defaultValue}} = null{{/defaultValue}}{{/isReadOnly}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/php/ObjectSerializer.mustache b/modules/openapi-generator/src/main/resources/php/ObjectSerializer.mustache
index 6d1193099c5..7d48d3557c3 100644
--- a/modules/openapi-generator/src/main/resources/php/ObjectSerializer.mustache
+++ b/modules/openapi-generator/src/main/resources/php/ObjectSerializer.mustache
@@ -120,6 +120,20 @@ class ObjectSerializer
         }
     }
 
+    /**
+     * Shorter timestamp microseconds to 6 digits length.
+     *
+     * @param string $timestamp Original timestamp
+     *
+     * @return string the shorten timestamp
+     */
+    public static function sanitizeTimestamp($timestamp)
+    {
+        if (!is_string($timestamp)) return $timestamp;
+
+        return preg_replace('/(:\d{2}.\d{6})\d*/', '$1', $timestamp);
+    }
+
     /**
      * Take value and turn it into a string suitable for inclusion in
      * the path, by url-encoding.
@@ -313,10 +327,9 @@ class ObjectSerializer
                     return new \DateTime($data);
                 } catch (\Exception $exception) {
                     // Some API's return a date-time with too high nanosecond
-                    // precision for php's DateTime to handle. This conversion
-                    // (string -> unix timestamp -> DateTime) is a workaround
-                    // for the problem.
-                    return (new \DateTime())->setTimestamp(strtotime($data));
+                    // precision for php's DateTime to handle.
+                    // With provided regexp 6 digits of microseconds saved
+                    return new \DateTime(self::sanitizeTimestamp($data));
                 }
             } else {
                 return null;
diff --git a/modules/openapi-generator/src/main/resources/php/composer.mustache b/modules/openapi-generator/src/main/resources/php/composer.mustache
index 6a69cead65d..e8c6f3bf10c 100644
--- a/modules/openapi-generator/src/main/resources/php/composer.mustache
+++ b/modules/openapi-generator/src/main/resources/php/composer.mustache
@@ -29,7 +29,7 @@
         "ext-json": "*",
         "ext-mbstring": "*",
         "guzzlehttp/guzzle": "^7.3",
-        "guzzlehttp/psr7": "^2.0"
+        "guzzlehttp/psr7": "^1.7 || ^2.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.0 || ^9.0",
diff --git a/modules/openapi-generator/src/main/resources/python-aiohttp/README.mustache b/modules/openapi-generator/src/main/resources/python-aiohttp/README.mustache
index a9730470093..42dd581c40e 100644
--- a/modules/openapi-generator/src/main/resources/python-aiohttp/README.mustache
+++ b/modules/openapi-generator/src/main/resources/python-aiohttp/README.mustache
@@ -8,7 +8,7 @@ is an example of building a OpenAPI-enabled aiohttp server.
 This example uses the [Connexion](https://github.com/zalando/connexion) library on top of aiohttp.
 
 ## Requirements
-Python 3.5.2+
+Python {{{generatorLanguageVersion}}}
 
 ## Usage
 To run the server, please execute the following from the root directory:
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/README.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/README.handlebars
new file mode 100644
index 00000000000..aee6b66db62
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/README.handlebars
@@ -0,0 +1,57 @@
+# {{{projectName}}}
+{{#if appDescriptionWithNewLines}}
+{{{appDescriptionWithNewLines}}}
+{{/if}}
+
+This Python package is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project:
+
+- API version: {{appVersion}}
+- Package version: {{packageVersion}}
+{{#unless hideGenerationTimestamp}}
+- Build date: {{generatedDate}}
+{{/unless}}
+- Build package: {{generatorClass}}
+{{#if infoUrl}}
+For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
+{{/if}}
+
+## Requirements.
+
+Python {{generatorLanguageVersion}}
+v3.9 is needed so one can combine classmethod and property decorators to define
+object schema properties as classes
+
+## Installation & Usage
+### pip install
+
+If the python package is hosted on a repository, you can install directly using:
+
+```sh
+pip install git+https://{{gitHost}}/{{{gitUserId}}}/{{{gitRepoId}}}.git
+```
+(you may need to run `pip` with root permission: `sudo pip install git+https://{{gitHost}}/{{{gitUserId}}}/{{{gitRepoId}}}.git`)
+
+Then import the package:
+```python
+import {{{packageName}}}
+```
+
+### Setuptools
+
+Install via [Setuptools](http://pypi.python.org/pypi/setuptools).
+
+```sh
+python setup.py install --user
+```
+(or `sudo python setup.py install` to install the package for all users)
+
+Then import the package:
+```python
+import {{{packageName}}}
+```
+
+## Getting Started
+
+Please follow the [installation procedure](#installation--usage) and then run the following:
+
+{{> README_common }}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/README_common.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/README_common.handlebars
new file mode 100644
index 00000000000..5c57735164b
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/README_common.handlebars
@@ -0,0 +1,111 @@
+```python
+{{#with apiInfo}}{{#each apis}}{{#unless hasMore}}{{#if hasHttpSignatureMethods}}import datetime{{/if}}{{/unless}}{{/each}}{{/with}}
+import time
+import {{{packageName}}}
+from pprint import pprint
+{{#with apiInfo}}
+{{#each apis}}
+{{#if @first}}
+from {{packageName}}.{{apiPackage}} import {{classFilename}}
+{{#each imports}}
+{{{import}}}
+{{/each}}
+{{#with operations}}
+{{#each operation}}
+{{#if @first}}
+{{> doc_auth_partial}}
+
+# Enter a context with an instance of the API client
+with {{{packageName}}}.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = {{classFilename}}.{{{classname}}}(api_client)
+    {{#each allParams}}{{paramName}} = {{{example}}} # {{{dataType}}} | {{{description}}}{{#unless required}} (optional){{/unless}}{{#if defaultValue}} (default to {{{.}}}){{/if}}
+    {{/each}}
+
+    try:
+    {{#if summary}}    # {{{summary}}}
+    {{/if}}    {{#if returnType}}api_response = {{/if}}api_instance.{{{operationId}}}({{#each allParams}}{{#if required}}{{paramName}}{{/if}}{{#unless required}}{{paramName}}={{paramName}}{{/unless}}{{#if hasMore}}, {{/if}}{{/each}}){{#if returnType}}
+        pprint(api_response){{/if}}
+    except {{{packageName}}}.ApiException as e:
+        print("Exception when calling {{classname}}->{{operationId}}: %s\n" % e)
+{{/if}}
+{{/each}}
+{{/with}}
+{{/if}}
+{{/each}}
+{{/with}}
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *{{basePath}}*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+{{#with apiInfo}}{{#each apis}}{{#with operations}}{{#each operation}}*{{classname}}* | [**{{operationId}}**]({{apiDocPath}}{{classname}}.md#{{operationIdLowerCase}}) | **{{httpMethod}}** {{path}} | {{#if summary}}{{summary}}{{/if}}
+{{/each}}{{/with}}{{/each}}{{/with}}
+
+## Documentation For Models
+
+{{#each models}}{{#with model}} - [{{{classname}}}]({{modelDocPath}}{{{classname}}}.md)
+{{/with}}{{/each}}
+
+## Documentation For Authorization
+
+{{#unless authMethods}}
+ All endpoints do not require authorization.
+{{/unless}}
+{{#each authMethods}}
+{{#if @last}} Authentication schemes defined for the API:{{/if}}
+## {{{name}}}
+
+{{#if isApiKey}}
+- **Type**: API key
+- **API key parameter name**: {{{keyParamName}}}
+- **Location**: {{#if isKeyInQuery}}URL query string{{/if}}{{#if isKeyInHeader}}HTTP header{{/if}}
+{{/if}}
+{{#if isBasic}}
+{{#if isBasicBasic}}
+- **Type**: HTTP basic authentication
+{{/if}}
+{{#if isBasicBearer}}
+- **Type**: Bearer authentication{{#if bearerFormat}} ({{{bearerFormat}}}){{/if}}
+{{/if}}
+{{#if isHttpSignature}}
+- **Type**: HTTP signature authentication
+{{/if}}
+{{/if}}
+{{#if isOAuth}}
+- **Type**: OAuth
+- **Flow**: {{{flow}}}
+- **Authorization URL**: {{{authorizationUrl}}}
+- **Scopes**: {{#unless scopes}}N/A{{/unless}}
+{{#each scopes}} - **{{{scope}}}**: {{{description}}}
+{{/each}}
+{{/if}}
+
+{{/each}}
+
+## Author
+
+{{#with apiInfo}}{{#each apis}}{{#unless hasMore}}{{infoEmail}}
+{{/unless}}{{/each}}{{/with}}
+
+## Notes for Large OpenAPI documents
+If the OpenAPI document is large, imports in {{{packageName}}}.apis and {{{packageName}}}.models may fail with a
+RecursionError indicating the maximum recursion limit has been exceeded. In that case, there are a couple of solutions:
+
+Solution 1:
+Use specific imports for apis and models like:
+- `from {{{packageName}}}.{{apiPackage}}.default_api import DefaultApi`
+- `from {{{packageName}}}.{{modelPackage}}.pet import Pet`
+
+Solution 1:
+Before importing the package, adjust the maximum recursion limit as shown below:
+```
+import sys
+sys.setrecursionlimit(1500)
+import {{{packageName}}}
+from {{{packageName}}}.apis import *
+from {{{packageName}}}.models import *
+```
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/README_onlypackage.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/README_onlypackage.handlebars
new file mode 100644
index 00000000000..63f959375b0
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/README_onlypackage.handlebars
@@ -0,0 +1,43 @@
+# {{{projectName}}}
+{{#if appDescription}}
+{{{appDescription}}}
+{{/if}}
+
+The `{{packageName}}` package is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project:
+
+- API version: {{appVersion}}
+- Package version: {{packageVersion}}
+{{#unless hideGenerationTimestamp}}
+- Build date: {{generatedDate}}
+{{/unless}}
+- Build package: {{generatorClass}}
+{{#if infoUrl}}
+For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
+{{/if}}
+
+## Requirements.
+
+Python {{generatorLanguageVersion}}
+
+## Installation & Usage
+
+This python library package is generated without supporting files like setup.py or requirements files
+
+To be able to use it, you will need these dependencies in your own package that uses this library:
+
+* urllib3 >= 1.15
+* certifi
+* python-dateutil
+{{#if asyncio}}
+* aiohttp
+{{/if}}
+{{#if tornado}}
+* tornado>=4.2,<5
+{{/if}}
+
+## Getting Started
+
+In your own code, to use this library to connect and interact with {{{projectName}}},
+you can run the following:
+
+{{> README_common }}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/__init__.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/__init__.handlebars
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/__init__api.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/__init__api.handlebars
new file mode 100644
index 00000000000..1e059f73613
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/__init__api.handlebars
@@ -0,0 +1,9 @@
+{{#with apiInfo}}
+{{#each apis}}
+{{#if @first}}
+# do not import all apis into this module because that uses a lot of memory and stack frames
+# if you need the ability to import all apis from one package, import them with
+# from {{packageName}}.apis import {{classname}}
+{{/if}}
+{{/each}}
+{{/with}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/__init__apis.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/__init__apis.handlebars
new file mode 100644
index 00000000000..06fb33610b2
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/__init__apis.handlebars
@@ -0,0 +1,24 @@
+{{#with apiInfo}}
+{{#each apis}}
+{{#if @first}}
+# coding: utf-8
+
+# flake8: noqa
+
+# Import all APIs into this package.
+# If you have many APIs here with many many models used in each API this may
+# raise a `RecursionError`.
+# In order to avoid this, import only the API that you directly need like:
+#
+#   from {{packagename}}.{{apiPackage}}.{{classFilename}} import {{classname}}
+#
+# or import this package, but before doing it, use:
+#
+#   import sys
+#   sys.setrecursionlimit(n)
+
+# Import APIs into API package:
+{{/if}}
+from {{packageName}}.{{apiPackage}}.{{classFilename}} import {{classname}}
+{{/each}}
+{{/with}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/__init__model.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/__init__model.handlebars
new file mode 100644
index 00000000000..b6b698b0452
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/__init__model.handlebars
@@ -0,0 +1,5 @@
+# we can not import model classes here because that would create a circular
+# reference which would not work in python2
+# do not import all models into this module because that uses a lot of memory and stack frames
+# if you need the ability to import all models from one package, import them with
+# from {{packageName}}.models import ModelA, ModelB
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/__init__models.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/__init__models.handlebars
new file mode 100644
index 00000000000..31eac9cd544
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/__init__models.handlebars
@@ -0,0 +1,18 @@
+# coding: utf-8
+
+# flake8: noqa
+
+# import all models into this package
+# if you have many models here with many references from one model to another this may
+# raise a RecursionError
+# to avoid this, import only the models that you directly need like:
+# from from {{packageName}}.{{modelPackage}}.pet import Pet
+# or import this package, but before doing it, use:
+# import sys
+# sys.setrecursionlimit(n)
+
+{{#each models}}
+{{#with model}}
+from {{packageName}}.{{modelPackage}}.{{classFilename}} import {{classname}}
+{{/with}}
+{{/each}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/__init__package.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/__init__package.handlebars
new file mode 100644
index 00000000000..26350c7252d
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/__init__package.handlebars
@@ -0,0 +1,28 @@
+# coding: utf-8
+
+# flake8: noqa
+
+{{>partial_header}}
+
+__version__ = "{{packageVersion}}"
+
+# import ApiClient
+from {{packageName}}.api_client import ApiClient
+
+# import Configuration
+from {{packageName}}.configuration import Configuration
+{{#if hasHttpSignatureMethods}}
+from {{packageName}}.signing import HttpSigningConfiguration
+{{/if}}
+
+# import exceptions
+from {{packageName}}.exceptions import OpenApiException
+from {{packageName}}.exceptions import ApiAttributeError
+from {{packageName}}.exceptions import ApiTypeError
+from {{packageName}}.exceptions import ApiValueError
+from {{packageName}}.exceptions import ApiKeyError
+from {{packageName}}.exceptions import ApiException
+{{#if recursionLimit}}
+
+__import__('sys').setrecursionlimit({{recursionLimit}})
+{{/if}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/api.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/api.handlebars
new file mode 100644
index 00000000000..c6c0b423707
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/api.handlebars
@@ -0,0 +1,26 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+from {{packageName}}.api_client import ApiClient
+{{#with operations}}
+{{#each operation}}
+from {{packageName}}.api.{{classFilename}}_endpoints.{{operationId}} import {{operationIdCamelCase}}
+{{/each}}
+{{/with}}
+
+
+{{#with operations}}
+class {{classname}}(
+{{#each operation}}
+    {{operationIdCamelCase}},
+{{/each}}
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
+{{/with}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/api_client.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/api_client.handlebars
new file mode 100644
index 00000000000..4dfc613aae2
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/api_client.handlebars
@@ -0,0 +1,1379 @@
+# coding: utf-8
+{{>partial_header}}
+
+from dataclasses import dataclass
+from decimal import Decimal
+import enum
+import json
+import os
+import io
+import atexit
+from multiprocessing.pool import ThreadPool
+import re
+import tempfile
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+from urllib.parse import quote
+from urllib3.fields import RequestField as RequestFieldBase
+
+{{#if tornado}}
+import tornado.gen
+{{/if}}
+
+from {{packageName}} import rest
+from {{packageName}}.configuration import Configuration
+from {{packageName}}.exceptions import ApiTypeError, ApiValueError
+from {{packageName}}.schemas import (
+    NoneClass,
+    BoolClass,
+    Schema,
+    FileIO,
+    BinarySchema,
+    InstantiationMetadata,
+    date,
+    datetime,
+    none_type,
+    frozendict,
+    Unset,
+    unset,
+)
+
+
+class RequestField(RequestFieldBase):
+    def __eq__(self, other):
+        if not isinstance(other, RequestField):
+            return False
+        return self.__dict__ == other.__dict__
+
+
+class JSONEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, (str, int, float)):
+            # instances based on primitive classes
+            return obj
+        elif isinstance(obj, Decimal):
+            if obj.as_tuple().exponent >= 0:
+                return int(obj)
+            return float(obj)
+        elif isinstance(obj, NoneClass):
+            return None
+        elif isinstance(obj, BoolClass):
+            return bool(obj)
+        elif isinstance(obj, (dict, frozendict)):
+            return {key: self.default(val) for key, val in obj.items()}
+        elif isinstance(obj, (list, tuple)):
+            return [self.default(item) for item in obj]
+        raise ApiValueError('Unable to prepare type {} for serialization'.format(obj.__class__.__name__))
+
+
+class ParameterInType(enum.Enum):
+    QUERY = 'query'
+    HEADER = 'header'
+    PATH = 'path'
+    COOKIE = 'cookie'
+
+
+class ParameterStyle(enum.Enum):
+    MATRIX = 'matrix'
+    LABEL = 'label'
+    FORM = 'form'
+    SIMPLE = 'simple'
+    SPACE_DELIMITED = 'spaceDelimited'
+    PIPE_DELIMITED = 'pipeDelimited'
+    DEEP_OBJECT = 'deepObject'
+
+
+class ParameterSerializerBase:
+    @staticmethod
+    def __serialize_number(
+        in_data: typing.Union[int, float], name: str, prefix=''
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        return tuple([(name, prefix + str(in_data))])
+
+    @staticmethod
+    def __serialize_str(
+        in_data: str, name: str, prefix=''
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        return tuple([(name, prefix + quote(in_data))])
+
+    @staticmethod
+    def __serialize_bool(in_data: bool, name: str, prefix='') -> typing.Tuple[typing.Tuple[str, str]]:
+        if in_data:
+            return tuple([(name, prefix + 'true')])
+        return tuple([(name, prefix + 'false')])
+
+    @staticmethod
+    def __urlencode(in_data: typing.Any) -> str:
+        return quote(str(in_data))
+
+    def __serialize_list(
+        self,
+        in_data: typing.List[typing.Any],
+        style: ParameterStyle,
+        name: str,
+        explode: bool,
+        empty_val: typing.Union[typing.Tuple[str, str], typing.Tuple] = tuple(),
+        prefix: str = '',
+        separator: str = ',',
+    ) -> typing.Tuple[typing.Union[typing.Tuple[str, str], typing.Tuple], ...]:
+        if not in_data:
+            return empty_val
+        if explode and style in {
+            ParameterStyle.FORM,
+            ParameterStyle.MATRIX,
+            ParameterStyle.SPACE_DELIMITED,
+            ParameterStyle.PIPE_DELIMITED
+        }:
+            if style is ParameterStyle.FORM:
+                return tuple((name, prefix + self.__urlencode(val)) for val in in_data)
+            else:
+                joined_vals = prefix + separator.join(name + '=' + self.__urlencode(val) for val in in_data)
+        else:
+            joined_vals = prefix + separator.join(map(self.__urlencode, in_data))
+        return tuple([(name, joined_vals)])
+
+    def __form_item_representation(self, in_data: typing.Any) -> typing.Optional[str]:
+        if isinstance(in_data, none_type):
+            return None
+        elif isinstance(in_data, list):
+            if not in_data:
+                return None
+            raise ApiValueError('Unable to generate a form representation of {}'.format(in_data))
+        elif isinstance(in_data, dict):
+            if not in_data:
+                return None
+            raise ApiValueError('Unable to generate a form representation of {}'.format(in_data))
+        elif isinstance(in_data, (bool, bytes)):
+            raise ApiValueError('Unable to generate a form representation of {}'.format(in_data))
+        # str, float, int
+        return self.__urlencode(in_data)
+
+    def __serialize_dict(
+        self,
+        in_data: typing.Dict[str, typing.Any],
+        style: ParameterStyle,
+        name: str,
+        explode: bool,
+        empty_val: typing.Union[typing.Tuple[str, str], typing.Tuple] = tuple(),
+        prefix: str = '',
+        separator: str = ',',
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        if not in_data:
+            return empty_val
+        if all(val is None for val in in_data.values()):
+            return empty_val
+
+        form_items = {}
+        if style is ParameterStyle.FORM:
+            for key, val in in_data.items():
+                new_val = self.__form_item_representation(val)
+                if new_val is None:
+                    continue
+                form_items[key] = new_val
+
+        if explode:
+            if style is ParameterStyle.FORM:
+                return tuple((key, prefix + val) for key, val in form_items.items())
+            elif style in {
+                ParameterStyle.SIMPLE,
+                ParameterStyle.LABEL,
+                ParameterStyle.MATRIX,
+                ParameterStyle.SPACE_DELIMITED,
+                ParameterStyle.PIPE_DELIMITED
+            }:
+                joined_vals = prefix + separator.join(key + '=' + self.__urlencode(val) for key, val in in_data.items())
+            else:
+                raise ApiValueError(f'Invalid style {style} for dict serialization with explode=True')
+        elif style is ParameterStyle.FORM:
+            joined_vals = prefix + separator.join(key + separator + val for key, val in form_items.items())
+        else:
+            joined_vals = prefix + separator.join(
+                key + separator + self.__urlencode(val) for key, val in in_data.items())
+        return tuple([(name, joined_vals)])
+
+    def _serialize_x(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+        style: ParameterStyle,
+        name: str,
+        explode: bool,
+        empty_val: typing.Union[typing.Tuple[str, str], typing.Tuple] = (),
+        prefix: str = '',
+        separator: str = ',',
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        if isinstance(in_data, none_type):
+            return empty_val
+        elif isinstance(in_data, bool):
+            # must be before int check
+            return self.__serialize_bool(in_data, name=name, prefix=prefix)
+        elif isinstance(in_data, (int, float)):
+            return self.__serialize_number(in_data, name=name, prefix=prefix)
+        elif isinstance(in_data, str):
+            return self.__serialize_str(in_data, name=name, prefix=prefix)
+        elif isinstance(in_data, list):
+            return self.__serialize_list(
+                in_data,
+                style=style,
+                name=name,
+                explode=explode,
+                empty_val=empty_val,
+                prefix=prefix,
+                separator=separator
+            )
+        elif isinstance(in_data, dict):
+            return self.__serialize_dict(
+                in_data,
+                style=style,
+                name=name,
+                explode=explode,
+                empty_val=empty_val,
+                prefix=prefix,
+                separator=separator
+            )
+
+
+class StyleFormSerializer(ParameterSerializerBase):
+
+    def _serialize_form(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+        name: str,
+        explode: bool,
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        return self._serialize_x(in_data, style=ParameterStyle.FORM, name=name, explode=explode)
+
+
+class StyleSimpleSerializer(ParameterSerializerBase):
+
+    def _serialize_simple_tuple(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+        name: str,
+        explode: bool,
+        in_type: ParameterInType,
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        if in_type is ParameterInType.HEADER:
+            empty_val = ()
+        else:
+            empty_val = ((name, ''),)
+        return self._serialize_x(in_data, style=ParameterStyle.SIMPLE, name=name, explode=explode, empty_val=empty_val)
+
+
+@dataclass
+class ParameterBase:
+    name: str
+    in_type: ParameterInType
+    required: bool
+    style: typing.Optional[ParameterStyle]
+    explode: typing.Optional[bool]
+    allow_reserved: typing.Optional[bool]
+    schema: typing.Optional[typing.Type[Schema]]
+    content: typing.Optional[typing.Dict[str, typing.Type[Schema]]]
+
+    __style_to_in_type = {
+        ParameterStyle.MATRIX: {ParameterInType.PATH},
+        ParameterStyle.LABEL: {ParameterInType.PATH},
+        ParameterStyle.FORM: {ParameterInType.QUERY, ParameterInType.COOKIE},
+        ParameterStyle.SIMPLE: {ParameterInType.PATH, ParameterInType.HEADER},
+        ParameterStyle.SPACE_DELIMITED: {ParameterInType.QUERY},
+        ParameterStyle.PIPE_DELIMITED: {ParameterInType.QUERY},
+        ParameterStyle.DEEP_OBJECT: {ParameterInType.QUERY},
+    }
+    __in_type_to_default_style = {
+        ParameterInType.QUERY: ParameterStyle.FORM,
+        ParameterInType.PATH: ParameterStyle.SIMPLE,
+        ParameterInType.HEADER: ParameterStyle.SIMPLE,
+        ParameterInType.COOKIE: ParameterStyle.FORM,
+    }
+    __disallowed_header_names = {'Accept', 'Content-Type', 'Authorization'}
+    _json_encoder = JSONEncoder()
+    _json_content_type = 'application/json'
+
+    @classmethod
+    def __verify_style_to_in_type(cls, style: typing.Optional[ParameterStyle], in_type: ParameterInType):
+        if style is None:
+            return
+        in_type_set = cls.__style_to_in_type[style]
+        if in_type not in in_type_set:
+            raise ValueError(
+                'Invalid style and in_type combination. For style={} only in_type={} are allowed'.format(
+                    style, in_type_set
+                )
+            )
+
+    def __init__(
+        self,
+        name: str,
+        in_type: ParameterInType,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        if schema is None and content is None:
+            raise ValueError('Value missing; Pass in either schema or content')
+        if schema and content:
+            raise ValueError('Too many values provided. Both schema and content were provided. Only one may be input')
+        if name in self.__disallowed_header_names and in_type is ParameterInType.HEADER:
+            raise ValueError('Invalid name, name may not be one of {}'.format(self.__disallowed_header_names))
+        self.__verify_style_to_in_type(style, in_type)
+        if content is None and style is None:
+            style = self.__in_type_to_default_style[in_type]
+        if content is not None and in_type in self.__in_type_to_default_style and len(content) != 1:
+            raise ValueError('Invalid content length, content length must equal 1')
+        self.in_type = in_type
+        self.name = name
+        self.required = required
+        self.style = style
+        self.explode = explode
+        self.allow_reserved = allow_reserved
+        self.schema = schema
+        self.content = content
+
+    @staticmethod
+    def _remove_empty_and_cast(
+        in_data: typing.Tuple[typing.Tuple[str, str]],
+    ) -> typing.Dict[str, str]:
+        data = tuple(t for t in in_data if t)
+        if not data:
+            return dict()
+        return dict(data)
+
+    def _serialize_json(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        return tuple([(self.name, json.dumps(in_data))])
+
+
+class PathParameter(ParameterBase, StyleSimpleSerializer):
+
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.PATH,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    def __serialize_label(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Dict[str, str]:
+        empty_val = ((self.name, ''),)
+        prefix = '.'
+        separator = '.'
+        return self._remove_empty_and_cast(
+            self._serialize_x(
+                in_data,
+                style=ParameterStyle.LABEL,
+                name=self.name,
+                explode=self.explode,
+                empty_val=empty_val,
+                prefix=prefix,
+                separator=separator
+            )
+        )
+
+    def __serialize_matrix(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Dict[str, str]:
+        separator = ','
+        if in_data == '':
+            prefix = ';' + self.name
+        elif isinstance(in_data, (dict, list)) and self.explode:
+            prefix = ';'
+            separator = ';'
+        else:
+            prefix = ';' + self.name + '='
+        empty_val = ((self.name, ''),)
+        return self._remove_empty_and_cast(
+            self._serialize_x(
+                in_data,
+                style=ParameterStyle.MATRIX,
+                name=self.name,
+                explode=self.explode,
+                prefix=prefix,
+                empty_val=empty_val,
+                separator=separator
+            )
+        )
+
+    def _serialize_simple(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+    ) -> typing.Dict[str, str]:
+        tuple_data = self._serialize_simple_tuple(in_data, self.name, self.explode, self.in_type)
+        return self._remove_empty_and_cast(tuple_data)
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> typing.Dict[str, str]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            simple -> path
+                path:
+                    returns path_params: dict
+            label -> path
+                returns path_params
+            matrix -> path
+                returns path_params
+            """
+            if self.style:
+                if self.style is ParameterStyle.SIMPLE:
+                    return self._serialize_simple(cast_in_data)
+                elif self.style is ParameterStyle.LABEL:
+                    return self.__serialize_label(cast_in_data)
+                elif self.style is ParameterStyle.MATRIX:
+                    return self.__serialize_matrix(cast_in_data)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                tuple_data = self._serialize_json(cast_in_data)
+                return self._remove_empty_and_cast(tuple_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class QueryParameter(ParameterBase, StyleFormSerializer):
+
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.QUERY,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    def __serialize_space_delimited(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        separator = '%20'
+        empty_val = ()
+        return self._serialize_x(
+            in_data,
+            style=ParameterStyle.SPACE_DELIMITED,
+            name=self.name,
+            explode=self.explode,
+            separator=separator,
+            empty_val=empty_val
+        )
+
+    def __serialize_pipe_delimited(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        separator = '|'
+        empty_val = ()
+        return self._serialize_x(
+            in_data,
+            style=ParameterStyle.PIPE_DELIMITED,
+            name=self.name,
+            explode=self.explode,
+            separator=separator,
+            empty_val=empty_val
+        )
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            form -> query
+                query:
+                    - GET/HEAD/DELETE: could use fields
+                    - PUT/POST: must use urlencode to send parameters
+                    returns fields: tuple
+            spaceDelimited -> query
+                returns fields
+            pipeDelimited -> query
+                returns fields
+            deepObject -> query, https://github.com/OAI/OpenAPI-Specification/issues/1706
+                returns fields
+            """
+            if self.style:
+                # TODO update query ones to omit setting values when [] {} or None is input
+                if self.style is ParameterStyle.FORM:
+                    return self._serialize_form(cast_in_data, explode=self.explode, name=self.name)
+                elif self.style is ParameterStyle.SPACE_DELIMITED:
+                    return self.__serialize_space_delimited(cast_in_data)
+                elif self.style is ParameterStyle.PIPE_DELIMITED:
+                    return self.__serialize_pipe_delimited(cast_in_data)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                return self._serialize_json(cast_in_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class CookieParameter(ParameterBase, StyleFormSerializer):
+
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.COOKIE,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            form -> cookie
+                returns fields: tuple
+            """
+            if self.style:
+                return self._serialize_form(cast_in_data, explode=self.explode, name=self.name)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                return self._serialize_json(cast_in_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class HeaderParameter(ParameterBase, StyleSimpleSerializer):
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.HEADER,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    @staticmethod
+    def __to_headers(in_data: typing.Tuple[typing.Tuple[str, str], ...]) -> HTTPHeaderDict[str, str]:
+        data = tuple(t for t in in_data if t)
+        headers = HTTPHeaderDict()
+        if not data:
+            return headers
+        headers.extend(data)
+        return headers
+
+    def _serialize_simple(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+    ) -> HTTPHeaderDict[str, str]:
+        tuple_data = self._serialize_simple_tuple(in_data, self.name, self.explode, self.in_type)
+        return self.__to_headers(tuple_data)
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> HTTPHeaderDict[str, str]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            simple -> header
+                headers: PoolManager needs a mapping, tuple is close
+                    returns headers: dict
+            """
+            if self.style:
+                return self._serialize_simple(cast_in_data)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                tuple_data = self._serialize_json(cast_in_data)
+                return self.__to_headers(tuple_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class Encoding:
+    def __init__(
+        self,
+        content_type: str,
+        headers: typing.Optional[typing.Dict[str, HeaderParameter]] = None,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: bool = False,
+    ):
+        self.content_type = content_type
+        self.headers = headers
+        self.style = style
+        self.explode = explode
+        self.allow_reserved = allow_reserved
+
+
+class MediaType:
+    """
+    Used to store request and response body schema information
+    encoding:
+        A map between a property name and its encoding information.
+        The key, being the property name, MUST exist in the schema as a property.
+        The encoding object SHALL only apply to requestBody objects when the media type is
+        multipart or application/x-www-form-urlencoded.
+    """
+
+    def __init__(
+        self,
+        schema: typing.Type[Schema],
+        encoding: typing.Optional[typing.Dict[str, Encoding]] = None,
+    ):
+        self.schema = schema
+        self.encoding = encoding
+
+
+@dataclass
+class ApiResponse:
+    response: urllib3.HTTPResponse
+    body: typing.Union[Unset, typing.Type[Schema]]
+    headers: typing.Union[Unset, typing.List[HeaderParameter]]
+
+    def __init__(
+        self,
+        response: urllib3.HTTPResponse,
+        body: typing.Union[Unset, typing.Type[Schema]],
+        headers: typing.Union[Unset, typing.List[HeaderParameter]]
+    ):
+        """
+        pycharm needs this to prevent 'Unexpected argument' warnings
+        """
+        self.response = response
+        self.body = body
+        self.headers = headers
+
+
+@dataclass
+class ApiResponseWithoutDeserialization(ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[Unset, typing.Type[Schema]] = unset
+    headers: typing.Union[Unset, typing.List[HeaderParameter]] = unset
+
+
+class OpenApiResponse:
+    def __init__(
+        self,
+        response_cls: typing.Type[ApiResponse] = ApiResponse,
+        content: typing.Optional[typing.Dict[str, MediaType]] = None,
+        headers: typing.Optional[typing.List[HeaderParameter]] = None,
+    ):
+        self.headers = headers
+        if content is not None and len(content) == 0:
+            raise ValueError('Invalid value for content, the content dict must have >= 1 entry')
+        self.content = content
+        self.response_cls = response_cls
+
+    @staticmethod
+    def __deserialize_json(response: urllib3.HTTPResponse) -> typing.Any:
+        decoded_data = response.data.decode("utf-8")
+        return json.loads(decoded_data)
+
+    @staticmethod
+    def __file_name_from_content_disposition(content_disposition: typing.Optional[str]) -> typing.Optional[str]:
+        if content_disposition is None:
+            return None
+        match = re.search('filename="(.+?)"', content_disposition)
+        if not match:
+            return None
+        return match.group(1)
+
+    def __deserialize_application_octet_stream(
+        self, response: urllib3.HTTPResponse
+    ) -> typing.Union[bytes, io.BufferedReader]:
+        """
+        urllib3 use cases:
+        1. when preload_content=True (stream=False) then supports_chunked_reads is False and bytes are returned
+        2. when preload_content=False (stream=True) then supports_chunked_reads is True and
+            a file will be written and returned
+        """
+        if response.supports_chunked_reads():
+            file_name = self.__file_name_from_content_disposition(response.headers.get('content-disposition'))
+
+            if file_name is None:
+                _fd, path = tempfile.mkstemp()
+            else:
+                path = os.path.join(tempfile.gettempdir(), file_name)
+            # TODO get file_name from the filename at the end of the url if it exists
+            with open(path, 'wb') as new_file:
+                chunk_size = 1024
+                while True:
+                    data = response.read(chunk_size)
+                    if not data:
+                        break
+                    new_file.write(data)
+            # release_conn is needed for streaming connections only
+            response.release_conn()
+            new_file = open(path, 'rb')
+            return new_file
+        else:
+            return response.data
+
+    def deserialize(self, response: urllib3.HTTPResponse, configuration: Configuration) -> ApiResponse:
+        content_type = response.getheader('content-type')
+        deserialized_body = unset
+        streamed = response.supports_chunked_reads()
+        if self.content is not None:
+            if content_type == 'application/json':
+                body_data = self.__deserialize_json(response)
+            elif content_type == 'application/octet-stream':
+                body_data = self.__deserialize_application_octet_stream(response)
+            else:
+                raise NotImplementedError('Deserialization of {} has not yet been implemented'.format(content_type))
+            body_schema = self.content[content_type].schema
+            _instantiation_metadata = InstantiationMetadata(from_server=True, configuration=configuration)
+            deserialized_body = body_schema._from_openapi_data(
+                body_data, _instantiation_metadata=_instantiation_metadata)
+        elif streamed:
+            response.release_conn()
+
+        deserialized_headers = unset
+        if self.headers is not None:
+            deserialized_headers = unset
+
+        return self.response_cls(
+            response=response,
+            headers=deserialized_headers,
+            body=deserialized_body
+        )
+
+
+class ApiClient:
+    """Generic API client for OpenAPI client library builds.
+
+    OpenAPI generic API client. This client handles the client-
+    server communication, and is invariant across implementations. Specifics of
+    the methods and models for each application are generated from the OpenAPI
+    templates.
+
+    NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+    Do not edit the class manually.
+
+    :param configuration: .Configuration object for this client
+    :param header_name: a header to pass when making calls to the API.
+    :param header_value: a header value to pass when making calls to
+        the API.
+    :param cookie: a cookie to include in the header when making calls
+        to the API
+    :param pool_threads: The number of threads to use for async requests
+        to the API. More threads means more concurrent API requests.
+    """
+
+    _pool = None
+    __json_encoder = JSONEncoder()
+
+    def __init__(
+        self,
+        configuration: typing.Optional[Configuration] = None,
+        header_name: typing.Optional[str] = None,
+        header_value: typing.Optional[str] = None,
+        cookie: typing.Optional[str] = None,
+        pool_threads: int = 1
+    ):
+        if configuration is None:
+            configuration = Configuration()
+        self.configuration = configuration
+        self.pool_threads = pool_threads
+
+        self.rest_client = rest.RESTClientObject(configuration)
+        self.default_headers = {}
+        if header_name is not None:
+            self.default_headers[header_name] = header_value
+        self.cookie = cookie
+        # Set default User-Agent.
+        self.user_agent = '{{#if httpUserAgent}}{{{httpUserAgent}}}{{/if}}{{#unless httpUserAgent}}OpenAPI-Generator/{{{packageVersion}}}/python{{/unless}}'
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.close()
+
+    def close(self):
+        if self._pool:
+            self._pool.close()
+            self._pool.join()
+            self._pool = None
+            if hasattr(atexit, 'unregister'):
+                atexit.unregister(self.close)
+
+    @property
+    def pool(self):
+        """Create thread pool on first request
+         avoids instantiating unused threadpool for blocking clients.
+        """
+        if self._pool is None:
+            atexit.register(self.close)
+            self._pool = ThreadPool(self.pool_threads)
+        return self._pool
+
+    @property
+    def user_agent(self):
+        """User agent for this API client"""
+        return self.default_headers['User-Agent']
+
+    @user_agent.setter
+    def user_agent(self, value):
+        self.default_headers['User-Agent'] = value
+
+    def set_default_header(self, header_name, header_value):
+        self.default_headers[header_name] = header_value
+
+    {{#if tornado}}
+    @tornado.gen.coroutine
+    {{/if}}
+    {{#if asyncio}}async {{/if}}def __call_api(
+        self,
+        resource_path: str,
+        method: str,
+        path_params: typing.Optional[typing.Dict[str, typing.Any]] = None,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        auth_settings: typing.Optional[typing.List[str]] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        host: typing.Optional[str] = None,
+    ) -> urllib3.HTTPResponse:
+
+        # header parameters
+        headers = headers or {}
+        headers.update(self.default_headers)
+        if self.cookie:
+            headers['Cookie'] = self.cookie
+
+        # path parameters
+        if path_params:
+            for k, v in path_params.items():
+                # specified safe chars, encode everything
+                resource_path = resource_path.replace(
+                    '{%s}' % k,
+                    quote(str(v), safe=self.configuration.safe_chars_for_path_param)
+                )
+
+        # auth setting
+        self.update_params_for_auth(headers, query_params,
+                                    auth_settings, resource_path, method, body)
+
+        # request url
+        if host is None:
+            url = self.configuration.host + resource_path
+        else:
+            # use server/host defined in path or operation instead
+            url = host + resource_path
+
+        # perform request and return response
+        response = {{#if asyncio}}await {{/if}}{{#if tornado}}yield {{/if}}self.request(
+            method,
+            url,
+            query_params=query_params,
+            headers=headers,
+            fields=fields,
+            body=body,
+            stream=stream,
+            timeout=timeout,
+        )
+        return response
+
+    def call_api(
+        self,
+        resource_path: str,
+        method: str,
+        path_params: typing.Optional[typing.Dict[str, typing.Any]] = None,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        auth_settings: typing.Optional[typing.List[str]] = None,
+        async_req: typing.Optional[bool] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        host: typing.Optional[str] = None,
+    ) -> urllib3.HTTPResponse:
+        """Makes the HTTP request (synchronous) and returns deserialized data.
+
+        To make an async_req request, set the async_req parameter.
+
+        :param resource_path: Path to method endpoint.
+        :param method: Method to call.
+        :param path_params: Path parameters in the url.
+        :param query_params: Query parameters in the url.
+        :param headers: Header parameters to be
+            placed in the request header.
+        :param body: Request body.
+        :param fields: Request post form parameters,
+            for `application/x-www-form-urlencoded`, `multipart/form-data`.
+        :param auth_settings: Auth Settings names for the request.
+        :param async_req: execute request asynchronously
+        :type async_req: bool, optional TODO remove, unused
+        :param stream: if True, the urllib3.HTTPResponse object will
+                                 be returned without reading/decoding response
+                                 data. Also when True, if the openapi spec describes a file download,
+                                 the data will be written to a local filesystme file and the BinarySchema
+                                 instance will also inherit from FileSchema and FileIO
+                                 Default is False.
+        :type stream: bool, optional
+        :param timeout: timeout setting for this request. If one
+                                 number provided, it will be total request
+                                 timeout. It can also be a pair (tuple) of
+                                 (connection, read) timeouts.
+        :param host: api endpoint host
+        :return:
+            If async_req parameter is True,
+            the request will be called asynchronously.
+            The method will return the request thread.
+            If parameter async_req is False or missing,
+            then the method will return the response directly.
+        """
+
+        if not async_req:
+            return self.__call_api(
+                resource_path,
+                method,
+                path_params,
+                query_params,
+                headers,
+                body,
+                fields,
+                auth_settings,
+                stream,
+                timeout,
+                host,
+            )
+
+        return self.pool.apply_async(
+            self.__call_api,
+            (
+                resource_path,
+                method,
+                path_params,
+                query_params,
+                headers,
+                body,
+                json,
+                fields,
+                auth_settings,
+                stream,
+                timeout,
+                host,
+            )
+        )
+
+    def request(
+        self,
+        method: str,
+        url: str,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+    ) -> urllib3.HTTPResponse:
+        """Makes the HTTP request using RESTClient."""
+        if method == "GET":
+            return self.rest_client.GET(url,
+                                        query_params=query_params,
+                                        stream=stream,
+                                        timeout=timeout,
+                                        headers=headers)
+        elif method == "HEAD":
+            return self.rest_client.HEAD(url,
+                                         query_params=query_params,
+                                         stream=stream,
+                                         timeout=timeout,
+                                         headers=headers)
+        elif method == "OPTIONS":
+            return self.rest_client.OPTIONS(url,
+                                            query_params=query_params,
+                                            headers=headers,
+                                            fields=fields,
+                                            stream=stream,
+                                            timeout=timeout,
+                                            body=body)
+        elif method == "POST":
+            return self.rest_client.POST(url,
+                                         query_params=query_params,
+                                         headers=headers,
+                                         fields=fields,
+                                         stream=stream,
+                                         timeout=timeout,
+                                         body=body)
+        elif method == "PUT":
+            return self.rest_client.PUT(url,
+                                        query_params=query_params,
+                                        headers=headers,
+                                        fields=fields,
+                                        stream=stream,
+                                        timeout=timeout,
+                                        body=body)
+        elif method == "PATCH":
+            return self.rest_client.PATCH(url,
+                                          query_params=query_params,
+                                          headers=headers,
+                                          fields=fields,
+                                          stream=stream,
+                                          timeout=timeout,
+                                          body=body)
+        elif method == "DELETE":
+            return self.rest_client.DELETE(url,
+                                           query_params=query_params,
+                                           headers=headers,
+                                           stream=stream,
+                                           timeout=timeout,
+                                           body=body)
+        else:
+            raise ApiValueError(
+                "http method must be `GET`, `HEAD`, `OPTIONS`,"
+                " `POST`, `PATCH`, `PUT` or `DELETE`."
+            )
+
+    def update_params_for_auth(self, headers, querys, auth_settings,
+                               resource_path, method, body):
+        """Updates header and query params based on authentication setting.
+
+        :param headers: Header parameters dict to be updated.
+        :param querys: Query parameters tuple list to be updated.
+        :param auth_settings: Authentication setting identifiers list.
+        :param resource_path: A string representation of the HTTP request resource path.
+        :param method: A string representation of the HTTP request method.
+        :param body: A object representing the body of the HTTP request.
+            The object type is the return value of _encoder.default().
+        """
+        if not auth_settings:
+            return
+
+        for auth in auth_settings:
+            auth_setting = self.configuration.auth_settings().get(auth)
+            if auth_setting:
+                if auth_setting['in'] == 'cookie':
+                    headers.add('Cookie', auth_setting['value'])
+                elif auth_setting['in'] == 'header':
+                    if auth_setting['type'] != 'http-signature':
+                        headers.add(auth_setting['key'], auth_setting['value'])
+{{#if hasHttpSignatureMethods}}
+                    else:
+                        # The HTTP signature scheme requires multiple HTTP headers
+                        # that are calculated dynamically.
+                        signing_info = self.configuration.signing_info
+                        auth_headers = signing_info.get_http_signature_headers(
+                                            resource_path, method, headers, body, querys)
+                        for key, value in auth_headers.items():
+                            headers.add(key, value)
+{{/if}}
+                elif auth_setting['in'] == 'query':
+                    querys.append((auth_setting['key'], auth_setting['value']))
+                else:
+                    raise ApiValueError(
+                        'Authentication token must be in `query` or `header`'
+                    )
+
+
+class Api:
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    def __init__(self, api_client: typing.Optional[ApiClient] = None):
+        if api_client is None:
+            api_client = ApiClient()
+        self.api_client = api_client
+
+    @staticmethod
+    def _verify_typed_dict_inputs(cls: typing.Type[typing.TypedDict], data: typing.Dict[str, typing.Any]):
+        """
+        Ensures that:
+        - required keys are present
+        - additional properties are not input
+        - value stored under required keys do not have the value unset
+        Note: detailed value checking is done in schema classes
+        """
+        missing_required_keys = []
+        required_keys_with_unset_values = []
+        for required_key in cls.__required_keys__:
+            if required_key not in data:
+                missing_required_keys.append(required_key)
+                continue
+            value = data[required_key]
+            if value is unset:
+                required_keys_with_unset_values.append(required_key)
+        if missing_required_keys:
+            raise ApiTypeError(
+                '{} missing {} required arguments: {}'.format(
+                    cls.__name__, len(missing_required_keys), missing_required_keys
+                 )
+             )
+        if required_keys_with_unset_values:
+            raise ApiValueError(
+                '{} contains invalid unset values for {} required keys: {}'.format(
+                    cls.__name__, len(required_keys_with_unset_values), required_keys_with_unset_values
+                )
+            )
+
+        disallowed_additional_keys = []
+        for key in data:
+            if key in cls.__required_keys__ or key in cls.__optional_keys__:
+                continue
+            disallowed_additional_keys.append(key)
+        if disallowed_additional_keys:
+            raise ApiTypeError(
+                '{} got {} unexpected keyword arguments: {}'.format(
+                    cls.__name__, len(disallowed_additional_keys), disallowed_additional_keys
+                )
+            )
+
+    def get_host(
+        self,
+        operation_id: str,
+        servers: typing.Tuple[typing.Dict[str, str], ...] = tuple(),
+        host_index: typing.Optional[int] = None
+    ) -> typing.Optional[str]:
+        configuration = self.api_client.configuration
+        try:
+            if host_index is None:
+                index = configuration.server_operation_index.get(
+                    operation_id, configuration.server_index
+                )
+            else:
+                index = host_index
+            server_variables = configuration.server_operation_variables.get(
+                operation_id, configuration.server_variables
+            )
+            host = configuration.get_host_from_settings(
+                index, variables=server_variables, servers=servers
+            )
+        except IndexError:
+            if servers:
+                raise ApiValueError(
+                    "Invalid host index. Must be 0 <= index < %s" %
+                    len(servers)
+                )
+            host = None
+        return host
+
+
+class SerializedRequestBody(typing.TypedDict, total=False):
+    body: typing.Union[str, bytes]
+    fields: typing.Tuple[typing.Union[RequestField, tuple[str, str]], ...]
+
+
+class RequestBody(StyleFormSerializer):
+    """
+    A request body parameter
+    content: content_type to MediaType Schema info
+    """
+    __json_encoder = JSONEncoder()
+
+    def __init__(
+        self,
+        content: typing.Dict[str, MediaType],
+        required: bool = False,
+    ):
+        self.required = required
+        if len(content) == 0:
+            raise ValueError('Invalid value for content, the content dict must have >= 1 entry')
+        self.content = content
+
+    def __serialize_json(
+        self,
+        in_data: typing.Any
+    ) -> typing.Dict[str, bytes]:
+        in_data = self.__json_encoder.default(in_data)
+        json_str = json.dumps(in_data, separators=(",", ":"), ensure_ascii=False).encode(
+            "utf-8"
+        )
+        return dict(body=json_str)
+
+    @staticmethod
+    def __serialize_text_plain(in_data: typing.Any) -> typing.Dict[str, str]:
+        if isinstance(in_data, frozendict):
+            raise ValueError('Unable to serialize type frozendict to text/plain')
+        elif isinstance(in_data, tuple):
+            raise ValueError('Unable to serialize type tuple to text/plain')
+        elif isinstance(in_data, NoneClass):
+            raise ValueError('Unable to serialize type NoneClass to text/plain')
+        elif isinstance(in_data, BoolClass):
+            raise ValueError('Unable to serialize type BoolClass to text/plain')
+        return dict(body=str(in_data))
+
+    def __multipart_json_item(self, key: str, value: Schema) -> RequestField:
+        json_value = self.__json_encoder.default(value)
+        return RequestField(name=key, data=json.dumps(json_value), headers={'Content-Type': 'application/json'})
+
+    def __multipart_form_item(self, key: str, value: Schema) -> RequestField:
+        if isinstance(value, str):
+            return RequestField(name=key, data=str(value), headers={'Content-Type': 'text/plain'})
+        elif isinstance(value, bytes):
+            return RequestField(name=key, data=value, headers={'Content-Type': 'application/octet-stream'})
+        elif isinstance(value, FileIO):
+            request_field = RequestField(
+                name=key,
+                data=value.read(),
+                filename=os.path.basename(value.name),
+                headers={'Content-Type': 'application/octet-stream'}
+            )
+            value.close()
+            return request_field
+        else:
+            return self.__multipart_json_item(key=key, value=value)
+
+    def __serialize_multipart_form_data(
+        self, in_data: Schema
+    ) -> typing.Dict[str, typing.Tuple[RequestField, ...]]:
+        if not isinstance(in_data, frozendict):
+            raise ValueError(f'Unable to serialize {in_data} to multipart/form-data because it is not a dict of data')
+        """
+        In a multipart/form-data request body, each schema property, or each element of a schema array property,
+        takes a section in the payload with an internal header as defined by RFC7578. The serialization strategy
+        for each property of a multipart/form-data request body can be specified in an associated Encoding Object.
+
+        When passing in multipart types, boundaries MAY be used to separate sections of the content being
+        transferred – thus, the following default Content-Types are defined for multipart:
+
+        If the (object) property is a primitive, or an array of primitive values, the default Content-Type is text/plain
+        If the property is complex, or an array of complex values, the default Content-Type is application/json
+            Question: how is the array of primitives encoded?
+        If the property is a type: string with a contentEncoding, the default Content-Type is application/octet-stream
+        """
+        fields = []
+        for key, value in in_data.items():
+            if isinstance(value, tuple):
+                if value:
+                    # values use explode = True, so the code makes a RequestField for each item with name=key
+                    for item in value:
+                        request_field = self.__multipart_form_item(key=key, value=item)
+                        fields.append(request_field)
+                else:
+                    # send an empty array as json because exploding will not send it
+                    request_field = self.__multipart_json_item(key=key, value=value)
+                    fields.append(request_field)
+            else:
+                request_field = self.__multipart_form_item(key=key, value=value)
+                fields.append(request_field)
+
+        return dict(fields=tuple(fields))
+
+    def __serialize_application_octet_stream(self, in_data: BinarySchema) -> typing.Dict[str, bytes]:
+        if isinstance(in_data, bytes):
+            return dict(body=in_data)
+        # FileIO type
+        result = dict(body=in_data.read())
+        in_data.close()
+        return result
+
+    def __serialize_application_x_www_form_data(
+        self, in_data: typing.Any
+    ) -> typing.Dict[str, tuple[tuple[str, str], ...]]:
+        if not isinstance(in_data, frozendict):
+            raise ValueError(
+                f'Unable to serialize {in_data} to application/x-www-form-urlencoded because it is not a dict of data')
+        cast_in_data = self.__json_encoder.default(in_data)
+        fields = self._serialize_form(cast_in_data, explode=True, name='')
+        if not fields:
+            return {}
+        return {'fields': fields}
+
+    def serialize(
+        self, in_data: typing.Any, content_type: str
+    ) -> SerializedRequestBody:
+        """
+        If a str is returned then the result will be assigned to data when making the request
+        If a tuple is returned then the result will be used as fields input in encode_multipart_formdata
+        Return a tuple of
+
+        The key of the return dict is
+        - body for application/json
+        - encode_multipart and fields for multipart/form-data
+        """
+        media_type = self.content[content_type]
+        if isinstance(in_data, media_type.schema):
+            cast_in_data = in_data
+        elif isinstance(in_data, (dict, frozendict)) and in_data:
+            cast_in_data = media_type.schema(**in_data)
+        else:
+            cast_in_data = media_type.schema(in_data)
+        # TODO check for and use encoding if it exists
+        # and content_type is multipart or application/x-www-form-urlencoded
+        if content_type == 'application/json':
+            return self.__serialize_json(cast_in_data)
+        elif content_type == 'text/plain':
+            return self.__serialize_text_plain(cast_in_data)
+        elif content_type == 'multipart/form-data':
+            return self.__serialize_multipart_form_data(cast_in_data)
+        elif content_type == 'application/x-www-form-urlencoded':
+            return self.__serialize_application_x_www_form_data(cast_in_data)
+        elif content_type == 'application/octet-stream':
+            return self.__serialize_application_octet_stream(cast_in_data)
+        raise NotImplementedError('Serialization has not yet been implemented for {}'.format(content_type))
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/api_doc.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/api_doc.handlebars
new file mode 100644
index 00000000000..6e74b8abb83
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/api_doc.handlebars
@@ -0,0 +1,212 @@
+# {{packageName}}.{{classname}}{{#if description}}
+{{description}}{{/if}}
+
+All URIs are relative to *{{basePath}}*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+{{#with operations}}{{#each operation}}[**{{operationId}}**]({{classname}}.md#{{operationId}}) | **{{httpMethod}}** {{path}} | {{#if summary}}{{summary}}{{/if}}
+{{/each}}{{/with}}
+
+{{#with operations}}
+{{#each operation}}
+# **{{{operationId}}}**
+> {{#if returnType}}{{{returnType}}} {{/if}}{{{operationId}}}({{#each requiredParams}}{{#unless defaultValue}}{{paramName}}{{#if hasMore}}, {{/if}}{{/unless}}{{/each}})
+
+{{{summary}}}{{#if notes}}
+
+{{{notes}}}{{/if}}
+
+### Example
+
+{{#if hasAuthMethods}}
+{{#each authMethods}}
+{{#if isBasic}}
+{{#if isBasicBasic}}
+* Basic Authentication ({{name}}):
+{{/if}}
+{{#if isBasicBearer}}
+* Bearer{{#if bearerFormat}} ({{{bearerFormat}}}){{/if}} Authentication ({{name}}):
+{{/if}}
+{{/if}}
+{{#if isApiKey}}
+* Api Key Authentication ({{name}}):
+{{/if}}
+{{#if isOAuth}}
+* OAuth Authentication ({{name}}):
+{{/if}}
+{{/each}}
+{{/if}}
+{{> api_doc_example }}
+### Parameters
+{{#if allParams}}
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+    {{#with bodyParam}}
+{{baseName}} | typing.Union[{{#each content}}{{#unless @first}}, {{/unless}}{{this.schema.baseName}}{{/each}}{{#unless required}}, Unset]{{else}}]{{/unless}} | {{#if required}}required{{else}}optional, default is unset{{/if}} |
+    {{/with}}
+    {{#if queryParams}}
+query_params | RequestQueryParams | |
+    {{/if}}
+    {{#if headerParams}}
+header_params | RequestHeaderParams | |
+    {{/if}}
+    {{#if pathParams}}
+path_params | RequestPathParams | |
+    {{/if}}
+    {{#if cookieParams}}
+cookie_params | RequestCookieParams | |
+    {{/if}}
+    {{#with bodyParam}}
+        {{#each content}}
+        {{#if @first}}
+content_type | str | optional, default is '{{@key}}' | Selects the schema and serialization of the request body
+        {{/if}}
+        {{/each}}
+    {{/with}}
+    {{#if produces}}
+accept_content_types | typing.Tuple[str] | default is ({{#each produces}}'{{this.mediaType}}', {{/each}}) | Tells the server the content type(s) that are accepted by the client
+    {{/if}}
+    {{#if servers}}
+host_index | typing.Optional[int] | default is None | Allows one to select a different host
+    {{/if}}
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+    {{#with bodyParam}}
+
+### body
+        {{#each content}}
+        {{#with this.schema}}
+{{> api_doc_schema_type_hint }}
+        {{/with}}
+        {{/each}}
+    {{/with}}
+    {{#if queryParams}}
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+        {{#each queryParams}}
+{{baseName}} | {{#with schema}}{{baseName}}{{/with}} | | {{#unless required}}optional{{/unless}}
+        {{/each}}
+
+        {{#each queryParams}}
+        {{#with schema}}
+{{> api_doc_schema_type_hint }}
+        {{/with}}
+        {{/each}}
+    {{/if}}
+    {{#if headerParams}}
+
+### header_params
+#### RequestHeaderParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+        {{#each headerParams}}
+{{baseName}} | {{#with schema}}{{baseName}}{{/with}} | | {{#unless required}}optional{{/unless}}
+        {{/each}}
+        {{#each headerParams}}
+        {{#with schema}}
+{{> api_doc_schema_type_hint }}
+        {{/with}}
+        {{/each}}
+    {{/if}}
+    {{#if pathParams}}
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+        {{#each pathParams}}
+{{baseName}} | {{#with schema}}{{baseName}}{{/with}} | | {{#unless required}}optional{{/unless}}
+        {{/each}}
+        {{#each pathParams}}
+        {{#with schema}}
+{{> api_doc_schema_type_hint }}
+        {{/with}}
+        {{/each}}
+    {{/if}}
+    {{#if cookieParams}}
+
+### cookie_params
+#### RequestCookieParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+        {{#each cookieParams}}
+{{baseName}} | {{#with schema}}{{baseName}}{{/with}} | | {{#unless required}}optional{{/unless}}
+        {{/each}}
+        {{#each cookieParams}}
+        {{#with schema}}
+{{> api_doc_schema_type_hint }}
+        {{/with}}
+        {{/each}}
+    {{/if}}
+{{else}}
+This endpoint does not need any parameter.
+{{/if}}
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+{{#each responses}}
+{{#if isDefault}}
+default | ApiResponseForDefault | {{message}} {{description}}
+{{else}}
+{{code}} | ApiResponseFor{{code}} | {{message}} {{description}}
+{{/if}}
+{{/each}}
+{{#each responses}}
+{{#if isDefault}}
+
+#### ApiResponseForDefault
+{{else}}
+
+#### ApiResponseFor{{code}}
+{{/if}}
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | {{#unless content}}Unset{{else}}typing.Union[{{#each content}}{{this.schema.baseName}}, {{/each}}]{{/unless}} | {{#unless content}}body was not defined{{/unless}} |
+headers | {{#unless responseHeaders}}Unset{{else}}ResponseHeadersFor{{code}}{{/unless}} | {{#unless responseHeaders}}headers were not defined{{/unless}} |
+{{#each content}}
+{{#with this.schema}}
+{{> api_doc_schema_type_hint }}
+{{/with}}
+{{/each}}
+{{#if responseHeaders}}
+#### ResponseHeadersFor{{code}}
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+        {{#each responseHeaders}}
+{{baseName}} | {{#with schema}}{{baseName}}{{/with}} | | {{#unless required}}optional{{/unless}}
+        {{/each}}
+        {{#each responseHeaders}}
+        {{#with schema}}
+{{> api_doc_schema_type_hint }}
+        {{/with}}
+        {{/each}}
+
+{{/if}}
+{{/each}}
+
+
+{{#if returnType}}{{#if returnTypeIsPrimitive}}**{{{returnType}}}**{{/if}}{{#unless returnTypeIsPrimitive}}[**{{{returnType}}}**]({{returnBaseType}}.md){{/unless}}{{/if}}{{#unless returnType}}void (empty response body){{/unless}}
+
+### Authorization
+
+{{#unless authMethods}}No authorization required{{/unless}}{{#each authMethods}}[{{{name}}}](../README.md#{{{name}}}){{#unless @last}}, {{/unless}}{{/each}}
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+{{/each}}
+{{/with}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/api_doc_example.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/api_doc_example.handlebars
new file mode 100644
index 00000000000..e6fa0bd4edb
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/api_doc_example.handlebars
@@ -0,0 +1,163 @@
+```python
+import {{{packageName}}}
+from {{packageName}}.{{apiPackage}} import {{classFilename}}
+{{#each imports}}
+{{{.}}}
+{{/each}}
+from pprint import pprint
+{{> doc_auth_partial}}
+# Enter a context with an instance of the API client
+with {{{packageName}}}.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = {{classFilename}}.{{{classname}}}(api_client)
+{{#if requiredParams}}
+
+    # example passing only required values which don't have defaults set
+{{#if pathParams}}
+    path_params = {
+    {{#each pathParams}}
+    {{#if required}}
+        '{{baseName}}': {{{example}}},
+    {{/if}}
+    {{/each}}
+    }
+{{/if}}
+{{#if queryParams}}
+    query_params = {
+    {{#each queryParams}}
+    {{#if required}}
+        '{{baseName}}': {{{example}}},
+    {{/if}}
+    {{/each}}
+    }
+{{/if}}
+{{#if cookieParams}}
+    cookie_params = {
+    {{#each cookieParams}}
+    {{#if required}}
+        '{{baseName}}': {{{example}}},
+    {{/if}}
+    {{/each}}
+    }
+{{/if}}
+{{#if headerParams}}
+    header_params = {
+    {{#each headerParams}}
+    {{#if required}}
+        '{{baseName}}': {{{example}}},
+    {{/if}}
+    {{/each}}
+    }
+{{/if}}
+{{#with bodyParam}}
+    {{#if required}}
+    body = {{{example}}}
+    {{/if}}
+{{/with}}
+    try:
+{{#if summary}}
+        # {{{summary}}}
+{{/if}}
+        api_response = api_instance.{{{operationId}}}(
+            {{#if pathParams}}
+            path_params=path_params,
+            {{/if}}
+            {{#if queryParams}}
+            query_params=query_params,
+            {{/if}}
+            {{#if headerParams}}
+            header_params=header_params,
+            {{/if}}
+            {{#if cookieParams}}
+            cookie_params=cookie_params,
+            {{/if}}
+            {{#with bodyParam}}
+            {{#if required}}
+            body=body,
+            {{/if}}
+            {{/with}}
+        )
+{{#if returnType}}
+        pprint(api_response)
+{{/if}}
+    except {{{packageName}}}.ApiException as e:
+        print("Exception when calling {{classname}}->{{operationId}}: %s\n" % e)
+{{/if}}
+{{#if optionalParams}}
+
+    # example passing only optional values
+{{#if pathParams}}
+    path_params = {
+    {{#each pathParams}}
+        '{{baseName}}': {{{example}}},
+    {{/each}}
+    }
+{{/if}}
+{{#if queryParams}}
+    query_params = {
+    {{#each queryParams}}
+        '{{baseName}}': {{{example}}},
+    {{/each}}
+    }
+{{/if}}
+{{#if cookieParams}}
+    cookie_params = {
+    {{#each cookieParams}}
+        '{{baseName}}': {{{example}}},
+    {{/each}}
+    }
+{{/if}}
+{{#if headerParams}}
+    header_params = {
+    {{#each headerParams}}
+        '{{baseName}}': {{{example}}},
+    {{/each}}
+    }
+{{/if}}
+{{#with bodyParam}}
+    body = {{{example}}}
+{{/with}}
+    try:
+{{#if summary}}
+        # {{{summary}}}
+{{/if}}
+        api_response = api_instance.{{{operationId}}}(
+            {{#if pathParams}}
+            path_params=path_params,
+            {{/if}}
+            {{#if queryParams}}
+            query_params=query_params,
+            {{/if}}
+            {{#if headerParams}}
+            header_params=header_params,
+            {{/if}}
+            {{#if cookieParams}}
+            cookie_params=cookie_params,
+            {{/if}}
+            {{#if bodyParam}}
+            body=body,
+            {{/if}}
+        )
+{{#if returnType}}
+        pprint(api_response)
+{{/if}}
+    except {{{packageName}}}.ApiException as e:
+        print("Exception when calling {{classname}}->{{operationId}}: %s\n" % e)
+{{/if}}
+{{#unless requiredParams}}
+{{#unless optionalParams}}
+
+    # example, this endpoint has no required or optional parameters
+    try:
+{{#if summary}}
+        # {{{summary}}}
+{{/if}}
+        api_response = api_instance.{{{operationId}}}()
+{{#if returnType}}
+        pprint(api_response)
+{{/if}}
+    except {{{packageName}}}.ApiException as e:
+        print("Exception when calling {{classname}}->{{operationId}}: %s\n" % e)
+{{/unless}}
+{{/unless}}
+```
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/api_doc_schema_type_hint.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/api_doc_schema_type_hint.handlebars
new file mode 100644
index 00000000000..0698320ad88
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/api_doc_schema_type_hint.handlebars
@@ -0,0 +1,10 @@
+
+#### {{baseName}}
+{{#if complexType}}
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**{{dataType}}**]({{complexType}}.md) | {{description}} | {{#if isReadOnly}}[readonly] {{/if}}
+
+{{else}}
+{{> schema_doc }}
+{{/if}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/api_test.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/api_test.handlebars
new file mode 100644
index 00000000000..2f52783c605
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/api_test.handlebars
@@ -0,0 +1,34 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+import unittest
+
+import {{packageName}}
+from {{packageName}}.{{apiPackage}}.{{classFilename}} import {{classname}}  # noqa: E501
+
+
+class {{#with operations}}Test{{classname}}(unittest.TestCase):
+    """{{classname}} unit test stubs"""
+
+    def setUp(self):
+        self.api = {{classname}}()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+   {{#each operation}}
+    def test_{{operationId}}(self):
+        """Test case for {{{operationId}}}
+
+{{#if summary}}
+        {{{summary}}}  # noqa: E501
+{{/if}}
+        """
+        pass
+
+   {{/each}}
+{{/with}}
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/configuration.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/configuration.handlebars
new file mode 100644
index 00000000000..c0a0dc7dcc2
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/configuration.handlebars
@@ -0,0 +1,636 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+import copy
+import logging
+{{#unless asyncio}}
+import multiprocessing
+{{/unless}}
+import sys
+import urllib3
+
+from http import client as http_client
+from {{packageName}}.exceptions import ApiValueError
+
+
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems',
+    'uniqueItems', 'maxProperties', 'minProperties',
+}
+
+class Configuration(object):
+    """NOTE: This class is auto generated by OpenAPI Generator
+
+    Ref: https://openapi-generator.tech
+    Do not edit the class manually.
+
+    :param host: Base url
+    :param api_key: Dict to store API key(s).
+      Each entry in the dict specifies an API key.
+      The dict key is the name of the security scheme in the OAS specification.
+      The dict value is the API key secret.
+    :param api_key_prefix: Dict to store API prefix (e.g. Bearer)
+      The dict key is the name of the security scheme in the OAS specification.
+      The dict value is an API key prefix when generating the auth data.
+    :param username: Username for HTTP basic authentication
+    :param password: Password for HTTP basic authentication
+    :param discard_unknown_keys: Boolean value indicating whether to discard
+      unknown properties. A server may send a response that includes additional
+      properties that are not known by the client in the following scenarios:
+      1. The OpenAPI document is incomplete, i.e. it does not match the server
+         implementation.
+      2. The client was generated using an older version of the OpenAPI document
+         and the server has been upgraded since then.
+      If a schema in the OpenAPI document defines the additionalProperties attribute,
+      then all undeclared properties received by the server are injected into the
+      additional properties map. In that case, there are undeclared properties, and
+      nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
+{{#if hasHttpSignatureMethods}}
+    :param signing_info: Configuration parameters for the HTTP signature security scheme.
+        Must be an instance of {{{packageName}}}.signing.HttpSigningConfiguration
+{{/if}}
+    :param server_index: Index to servers configuration.
+    :param server_variables: Mapping with string values to replace variables in
+      templated server configuration. The validation of enums is performed for
+      variables with defined enum values before.
+    :param server_operation_index: Mapping from operation ID to an index to server
+      configuration.
+    :param server_operation_variables: Mapping from operation ID to a mapping with
+      string values to replace variables in templated server configuration.
+      The validation of enums is performed for variables with defined enum values before.
+
+{{#if hasAuthMethods}}
+    :Example:
+{{#if hasApiKeyMethods}}
+
+    API Key Authentication Example.
+    Given the following security scheme in the OpenAPI specification:
+      components:
+        securitySchemes:
+          cookieAuth:         # name for the security scheme
+            type: apiKey
+            in: cookie
+            name: JSESSIONID  # cookie name
+
+    You can programmatically set the cookie:
+
+conf = {{{packageName}}}.Configuration(
+    api_key={'cookieAuth': 'abc123'}
+    api_key_prefix={'cookieAuth': 'JSESSIONID'}
+)
+
+    The following cookie will be added to the HTTP request:
+       Cookie: JSESSIONID abc123
+{{/if}}
+{{#if hasHttpBasicMethods}}
+
+    HTTP Basic Authentication Example.
+    Given the following security scheme in the OpenAPI specification:
+      components:
+        securitySchemes:
+          http_basic_auth:
+            type: http
+            scheme: basic
+
+    Configure API client with HTTP basic authentication:
+
+conf = {{{packageName}}}.Configuration(
+    username='the-user',
+    password='the-password',
+)
+
+{{/if}}
+{{#if hasHttpSignatureMethods}}
+
+    HTTP Signature Authentication Example.
+    Given the following security scheme in the OpenAPI specification:
+      components:
+        securitySchemes:
+          http_basic_auth:
+            type: http
+            scheme: signature
+
+    Configure API client with HTTP signature authentication. Use the 'hs2019' signature scheme,
+    sign the HTTP requests with the RSA-SSA-PSS signature algorithm, and set the expiration time
+    of the signature to 5 minutes after the signature has been created.
+    Note you can use the constants defined in the {{{packageName}}}.signing module, and you can
+    also specify arbitrary HTTP headers to be included in the HTTP signature, except for the
+    'Authorization' header, which is used to carry the signature.
+
+    One may be tempted to sign all headers by default, but in practice it rarely works.
+    This is beccause explicit proxies, transparent proxies, TLS termination endpoints or
+    load balancers may add/modify/remove headers. Include the HTTP headers that you know
+    are not going to be modified in transit.
+
+conf = {{{packageName}}}.Configuration(
+    signing_info = {{{packageName}}}.signing.HttpSigningConfiguration(
+        key_id =                 'my-key-id',
+        private_key_path =       'rsa.pem',
+        signing_scheme =         {{{packageName}}}.signing.SCHEME_HS2019,
+        signing_algorithm =      {{{packageName}}}.signing.ALGORITHM_RSASSA_PSS,
+        signed_headers =         [{{{packageName}}}.signing.HEADER_REQUEST_TARGET,
+                                    {{{packageName}}}.signing.HEADER_CREATED,
+                                    {{{packageName}}}.signing.HEADER_EXPIRES,
+                                    {{{packageName}}}.signing.HEADER_HOST,
+                                    {{{packageName}}}.signing.HEADER_DATE,
+                                    {{{packageName}}}.signing.HEADER_DIGEST,
+                                    'Content-Type',
+                                    'User-Agent'
+                                    ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+{{/if}}
+{{/if}}
+    """
+
+    _default = None
+
+    def __init__(self, host=None,
+                 api_key=None, api_key_prefix=None,
+                 username=None, password=None,
+                 discard_unknown_keys=False,
+                 disabled_client_side_validations="",
+{{#if hasHttpSignatureMethods}}
+                 signing_info=None,
+{{/if}}
+                 server_index=None, server_variables=None,
+                 server_operation_index=None, server_operation_variables=None,
+                 ):
+        """Constructor
+        """
+        self._base_path = "{{{basePath}}}" if host is None else host
+        """Default Base url
+        """
+        self.server_index = 0 if server_index is None and host is None else server_index
+        self.server_operation_index = server_operation_index or {}
+        """Default server index
+        """
+        self.server_variables = server_variables or {}
+        self.server_operation_variables = server_operation_variables or {}
+        """Default server variables
+        """
+        self.temp_folder_path = None
+        """Temp file folder for downloading files
+        """
+        # Authentication Settings
+        self.api_key = {}
+        if api_key:
+            self.api_key = api_key
+        """dict to store API key(s)
+        """
+        self.api_key_prefix = {}
+        if api_key_prefix:
+            self.api_key_prefix = api_key_prefix
+        """dict to store API prefix (e.g. Bearer)
+        """
+        self.refresh_api_key_hook = None
+        """function hook to refresh API key if expired
+        """
+        self.username = username
+        """Username for HTTP basic authentication
+        """
+        self.password = password
+        """Password for HTTP basic authentication
+        """
+        self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
+{{#if hasHttpSignatureMethods}}
+        if signing_info is not None:
+            signing_info.host = host
+        self.signing_info = signing_info
+        """The HTTP signing configuration
+        """
+{{/if}}
+{{#if hasOAuthMethods}}
+        self.access_token = None
+        """access token for OAuth/Bearer
+        """
+{{/if}}
+{{#unless hasOAuthMethods}}
+{{#if hasBearerMethods}}
+        self.access_token = None
+        """access token for OAuth/Bearer
+        """
+{{/if}}
+{{/unless}}
+        self.logger = {}
+        """Logging Settings
+        """
+        self.logger["package_logger"] = logging.getLogger("{{packageName}}")
+        self.logger["urllib3_logger"] = logging.getLogger("urllib3")
+        self.logger_format = '%(asctime)s %(levelname)s %(message)s'
+        """Log format
+        """
+        self.logger_stream_handler = None
+        """Log stream handler
+        """
+        self.logger_file_handler = None
+        """Log file handler
+        """
+        self.logger_file = None
+        """Debug file location
+        """
+        self.debug = False
+        """Debug switch
+        """
+
+        self.verify_ssl = True
+        """SSL/TLS verification
+           Set this to false to skip verifying SSL certificate when calling API
+           from https server.
+        """
+        self.ssl_ca_cert = None
+        """Set this to customize the certificate file to verify the peer.
+        """
+        self.cert_file = None
+        """client certificate file
+        """
+        self.key_file = None
+        """client key file
+        """
+        self.assert_hostname = None
+        """Set this to True/False to enable/disable SSL hostname verification.
+        """
+
+        {{#if asyncio}}
+        self.connection_pool_maxsize = 100
+        """This value is passed to the aiohttp to limit simultaneous connections.
+           Default values is 100, None means no-limit.
+        """
+        {{/if}}
+        {{#unless asyncio}}
+        self.connection_pool_maxsize = multiprocessing.cpu_count() * 5
+        """urllib3 connection pool's maximum number of connections saved
+           per pool. urllib3 uses 1 connection as default value, but this is
+           not the best value when you are making a lot of possibly parallel
+           requests to the same host, which is often the case here.
+           cpu_count * 5 is used as default value to increase performance.
+        """
+        {{/unless}}
+
+        self.proxy = None
+        """Proxy URL
+        """
+        self.proxy_headers = None
+        """Proxy headers
+        """
+        self.safe_chars_for_path_param = ''
+        """Safe chars for path_param
+        """
+        self.retries = None
+        """Adding retries to override urllib3 default value 3
+        """
+        # Enable client side validation
+        self.client_side_validation = True
+
+        # Options to pass down to the underlying urllib3 socket
+        self.socket_options = None
+
+    def __deepcopy__(self, memo):
+        cls = self.__class__
+        result = cls.__new__(cls)
+        memo[id(self)] = result
+        for k, v in self.__dict__.items():
+            if k not in ('logger', 'logger_file_handler'):
+                setattr(result, k, copy.deepcopy(v, memo))
+        # shallow copy of loggers
+        result.logger = copy.copy(self.logger)
+        # use setters to configure loggers
+        result.logger_file = self.logger_file
+        result.debug = self.debug
+        return result
+
+    def __setattr__(self, name, value):
+        object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
+{{#if hasHttpSignatureMethods}}
+        if name == "signing_info" and value is not None:
+            # Ensure the host paramater from signing info is the same as
+            # Configuration.host.
+            value.host = self.host
+{{/if}}
+
+    @classmethod
+    def set_default(cls, default):
+        """Set default instance of configuration.
+
+        It stores default configuration, which can be
+        returned by get_default_copy method.
+
+        :param default: object of Configuration
+        """
+        cls._default = copy.deepcopy(default)
+
+    @classmethod
+    def get_default_copy(cls):
+        """Return new instance of configuration.
+
+        This method returns newly created, based on default constructor,
+        object of Configuration class or returns a copy of default
+        configuration passed by the set_default method.
+
+        :return: The configuration object.
+        """
+        if cls._default is not None:
+            return copy.deepcopy(cls._default)
+        return Configuration()
+
+    @property
+    def logger_file(self):
+        """The logger file.
+
+        If the logger_file is None, then add stream handler and remove file
+        handler. Otherwise, add file handler and remove stream handler.
+
+        :param value: The logger_file path.
+        :type: str
+        """
+        return self.__logger_file
+
+    @logger_file.setter
+    def logger_file(self, value):
+        """The logger file.
+
+        If the logger_file is None, then add stream handler and remove file
+        handler. Otherwise, add file handler and remove stream handler.
+
+        :param value: The logger_file path.
+        :type: str
+        """
+        self.__logger_file = value
+        if self.__logger_file:
+            # If set logging file,
+            # then add file handler and remove stream handler.
+            self.logger_file_handler = logging.FileHandler(self.__logger_file)
+            self.logger_file_handler.setFormatter(self.logger_formatter)
+            for _, logger in self.logger.items():
+                logger.addHandler(self.logger_file_handler)
+
+    @property
+    def debug(self):
+        """Debug status
+
+        :param value: The debug status, True or False.
+        :type: bool
+        """
+        return self.__debug
+
+    @debug.setter
+    def debug(self, value):
+        """Debug status
+
+        :param value: The debug status, True or False.
+        :type: bool
+        """
+        self.__debug = value
+        if self.__debug:
+            # if debug status is True, turn on debug logging
+            for _, logger in self.logger.items():
+                logger.setLevel(logging.DEBUG)
+            # turn on http_client debug
+            http_client.HTTPConnection.debuglevel = 1
+        else:
+            # if debug status is False, turn off debug logging,
+            # setting log level to default `logging.WARNING`
+            for _, logger in self.logger.items():
+                logger.setLevel(logging.WARNING)
+            # turn off http_client debug
+            http_client.HTTPConnection.debuglevel = 0
+
+    @property
+    def logger_format(self):
+        """The logger format.
+
+        The logger_formatter will be updated when sets logger_format.
+
+        :param value: The format string.
+        :type: str
+        """
+        return self.__logger_format
+
+    @logger_format.setter
+    def logger_format(self, value):
+        """The logger format.
+
+        The logger_formatter will be updated when sets logger_format.
+
+        :param value: The format string.
+        :type: str
+        """
+        self.__logger_format = value
+        self.logger_formatter = logging.Formatter(self.__logger_format)
+
+    def get_api_key_with_prefix(self, identifier, alias=None):
+        """Gets API key (with prefix if set).
+
+        :param identifier: The identifier of apiKey.
+        :param alias: The alternative identifier of apiKey.
+        :return: The token for api key authentication.
+        """
+        if self.refresh_api_key_hook is not None:
+            self.refresh_api_key_hook(self)
+        key = self.api_key.get(identifier, self.api_key.get(alias) if alias is not None else None)
+        if key:
+            prefix = self.api_key_prefix.get(identifier)
+            if prefix:
+                return "%s %s" % (prefix, key)
+            else:
+                return key
+
+    def get_basic_auth_token(self):
+        """Gets HTTP basic authentication header (string).
+
+        :return: The token for basic HTTP authentication.
+        """
+        username = ""
+        if self.username is not None:
+            username = self.username
+        password = ""
+        if self.password is not None:
+            password = self.password
+        return urllib3.util.make_headers(
+            basic_auth=username + ':' + password
+        ).get('authorization')
+
+    def auth_settings(self):
+        """Gets Auth Settings dict for api client.
+
+        :return: The Auth Settings information dict.
+        """
+        auth = {}
+{{#each authMethods}}
+{{#if isApiKey}}
+        if '{{name}}' in self.api_key{{#each vendorExtensions.x-auth-id-alias}} or '{{.}}' in self.api_key{{/each}}:
+            auth['{{name}}'] = {
+                'type': 'api_key',
+                'in': {{#if isKeyInCookie}}'cookie'{{/if}}{{#if isKeyInHeader}}'header'{{/if}}{{#if isKeyInQuery}}'query'{{/if}},
+                'key': '{{keyParamName}}',
+                'value': self.get_api_key_with_prefix(
+                    '{{name}}',{{#each vendorExtensions.x-auth-id-alias}}
+                    alias='{{.}}',{{/each}}
+                ),
+            }
+{{/if}}
+{{#if isBasic}}
+  {{#if isBasicBasic}}
+        if self.username is not None and self.password is not None:
+            auth['{{name}}'] = {
+                'type': 'basic',
+                'in': 'header',
+                'key': 'Authorization',
+                'value': self.get_basic_auth_token()
+            }
+  {{/if}}
+  {{#if isBasicBearer}}
+        if self.access_token is not None:
+            auth['{{name}}'] = {
+                'type': 'bearer',
+                'in': 'header',
+                {{#if bearerFormat}}
+                'format': '{{{bearerFormat}}}',
+                {{/if}}
+                'key': 'Authorization',
+                'value': 'Bearer ' + self.access_token
+            }
+  {{/if}}
+  {{#if isHttpSignature}}
+        if self.signing_info is not None:
+            auth['{{name}}'] = {
+                'type': 'http-signature',
+                'in': 'header',
+                'key': 'Authorization',
+                'value': None  # Signature headers are calculated for every HTTP request
+            }
+  {{/if}}
+{{/if}}
+{{#if isOAuth}}
+        if self.access_token is not None:
+            auth['{{name}}'] = {
+                'type': 'oauth2',
+                'in': 'header',
+                'key': 'Authorization',
+                'value': 'Bearer ' + self.access_token
+            }
+{{/if}}
+{{/each}}
+        return auth
+
+    def to_debug_report(self):
+        """Gets the essential information for debugging.
+
+        :return: The report for debugging.
+        """
+        return "Python SDK Debug Report:\n"\
+               "OS: {env}\n"\
+               "Python Version: {pyversion}\n"\
+               "Version of the API: {{version}}\n"\
+               "SDK Package Version: {{packageVersion}}".\
+               format(env=sys.platform, pyversion=sys.version)
+
+    def get_host_settings(self):
+        """Gets an array of host settings
+
+        :return: An array of host settings
+        """
+        return [
+            {{#each servers}}
+            {
+                'url': "{{{url}}}",
+                'description': "{{{description}}}{{#unless description}}No description provided{{/unless}}",
+                {{#each variables}}
+                {{#if @first}}
+                'variables': {
+                {{/if}}
+                    '{{{name}}}': {
+                        'description': "{{{description}}}{{#unless description}}No description provided{{/unless}}",
+                        'default_value': "{{{defaultValue}}}",
+                        {{#each enumValues}}
+                        {{#if @first}}
+                        'enum_values': [
+                        {{/if}}
+                            "{{{.}}}"{{#unless @last}},{{/unless}}
+                        {{#if @last}}
+                        ]
+                        {{/if}}
+                        {{/each}}
+                        }{{#unless @last}},{{/unless}}
+                {{#if @last}}
+                    }
+                {{/if}}
+                {{/each}}
+            }{{#unless @last}},{{/unless}}
+            {{/each}}
+        ]
+
+    def get_host_from_settings(self, index, variables=None, servers=None):
+        """Gets host URL based on the index and variables
+        :param index: array index of the host settings
+        :param variables: hash of variable and the corresponding value
+        :param servers: an array of host settings or None
+        :return: URL based on host settings
+        """
+        if index is None:
+            return self._base_path
+
+        variables = {} if variables is None else variables
+        servers = self.get_host_settings() if servers is None else servers
+
+        try:
+            server = servers[index]
+        except IndexError:
+            raise ValueError(
+                "Invalid index {0} when selecting the host settings. "
+                "Must be less than {1}".format(index, len(servers)))
+
+        url = server['url']
+
+        # go through variables and replace placeholders
+        for variable_name, variable in server.get('variables', {}).items():
+            used_value = variables.get(
+                variable_name, variable['default_value'])
+
+            if 'enum_values' in variable \
+                    and used_value not in variable['enum_values']:
+                raise ValueError(
+                    "The variable `{0}` in the host URL has invalid value "
+                    "{1}. Must be {2}.".format(
+                        variable_name, variables[variable_name],
+                        variable['enum_values']))
+
+            url = url.replace("{" + variable_name + "}", used_value)
+
+        return url
+
+    @property
+    def host(self):
+        """Return generated host."""
+        return self.get_host_from_settings(self.server_index, variables=self.server_variables)
+
+    @host.setter
+    def host(self, value):
+        """Fix base path."""
+        self._base_path = value
+        self.server_index = None
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/doc_auth_partial.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/doc_auth_partial.handlebars
new file mode 100644
index 00000000000..b16451d867e
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/doc_auth_partial.handlebars
@@ -0,0 +1,109 @@
+# Defining the host is optional and defaults to {{{basePath}}}
+# See configuration.py for a list of all supported configuration parameters.
+configuration = {{{packageName}}}.Configuration(
+    host = "{{{basePath}}}"
+)
+
+{{#if hasAuthMethods}}
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+{{#each authMethods}}
+{{#if isBasic}}
+{{#if isBasicBasic}}
+
+# Configure HTTP basic authorization: {{{name}}}
+configuration = {{{packageName}}}.Configuration(
+    username = 'YOUR_USERNAME',
+    password = 'YOUR_PASSWORD'
+)
+{{/if}}
+{{#if isBasicBearer}}
+
+# Configure Bearer authorization{{#if bearerFormat}} ({{{bearerFormat}}}){{/if}}: {{{name}}}
+configuration = {{{packageName}}}.Configuration(
+    access_token = 'YOUR_BEARER_TOKEN'
+)
+{{/if}}
+{{#if isHttpSignature}}
+
+# Configure HTTP message signature: {{{name}}}
+# The HTTP Signature Header mechanism that can be used by a client to
+# authenticate the sender of a message and ensure that particular headers
+# have not been modified in transit.
+#
+# You can specify the signing key-id, private key path, signing scheme,
+# signing algorithm, list of signed headers and signature max validity.
+# The 'key_id' parameter is an opaque string that the API server can use
+# to lookup the client and validate the signature.
+# The 'private_key_path' parameter should be the path to a file that
+# contains a DER or base-64 encoded private key.
+# The 'private_key_passphrase' parameter is optional. Set the passphrase
+# if the private key is encrypted.
+# The 'signed_headers' parameter is used to specify the list of
+# HTTP headers included when generating the signature for the message.
+# You can specify HTTP headers that you want to protect with a cryptographic
+# signature. Note that proxies may add, modify or remove HTTP headers
+# for legitimate reasons, so you should only add headers that you know
+# will not be modified. For example, if you want to protect the HTTP request
+# body, you can specify the Digest header. In that case, the client calculates
+# the digest of the HTTP request body and includes the digest in the message
+# signature.
+# The 'signature_max_validity' parameter is optional. It is configured as a
+# duration to express when the signature ceases to be valid. The client calculates
+# the expiration date every time it generates the cryptographic signature
+# of an HTTP request. The API server may have its own security policy
+# that controls the maximum validity of the signature. The client max validity
+# must be lower than the server max validity.
+# The time on the client and server must be synchronized, otherwise the
+# server may reject the client signature.
+#
+# The client must use a combination of private key, signing scheme,
+# signing algorithm and hash algorithm that matches the security policy of
+# the API server.
+#
+# See {{{packageName}}}.signing for a list of all supported parameters.
+configuration = {{{packageName}}}.Configuration(
+    host = "{{{basePath}}}",
+    signing_info = {{{packageName}}}.signing.HttpSigningConfiguration(
+        key_id = 'my-key-id',
+        private_key_path = 'private_key.pem',
+        private_key_passphrase = 'YOUR_PASSPHRASE',
+        signing_scheme = {{{packageName}}}.signing.SCHEME_HS2019,
+        signing_algorithm = {{{packageName}}}.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
+        hash_algorithm = {{{packageName}}}.signing.SCHEME_RSA_SHA256,
+        signed_headers = [
+                            {{{packageName}}}.signing.HEADER_REQUEST_TARGET,
+                            {{{packageName}}}.signing.HEADER_CREATED,
+                            {{{packageName}}}.signing.HEADER_EXPIRES,
+                            {{{packageName}}}.signing.HEADER_HOST,
+                            {{{packageName}}}.signing.HEADER_DATE,
+                            {{{packageName}}}.signing.HEADER_DIGEST,
+                            'Content-Type',
+                            'Content-Length',
+                            'User-Agent'
+                         ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+{{/if}}
+{{/if}}
+{{#if isApiKey}}
+
+# Configure API key authorization: {{{name}}}
+configuration.api_key['{{{name}}}'] = 'YOUR_API_KEY'
+
+# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
+# configuration.api_key_prefix['{{name}}'] = 'Bearer'
+{{/if}}
+{{#if isOAuth}}
+
+# Configure OAuth2 access token for authorization: {{{name}}}
+configuration = {{{packageName}}}.Configuration(
+    host = "{{{basePath}}}"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+{{/if}}
+{{/each}}
+{{/if}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/endpoint.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/endpoint.handlebars
new file mode 100644
index 00000000000..f6de978e478
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/endpoint.handlebars
@@ -0,0 +1,549 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+{{#with operation}}
+{{#or headerParams bodyParam produces}}
+from urllib3._collections import HTTPHeaderDict
+{{/or}}
+{{/with}}
+
+from {{packageName}} import api_client, exceptions
+{{> model_templates/imports_schema_types }}
+{{> model_templates/imports_schemas }}
+
+{{#with operation}}
+{{#if queryParams}}
+# query params
+{{#each queryParams}}
+{{#with schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{/each}}
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+{{#each queryParams}}
+{{#if required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/if}}
+{{/each}}
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+{{#each queryParams}}
+{{#unless required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/unless}}
+{{/each}}
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+{{#each queryParams}}
+{{> endpoint_parameter }}
+{{/each}}
+{{/if}}
+{{#if headerParams}}
+# header params
+{{#each headerParams}}
+{{#with schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{/each}}
+RequestRequiredHeaderParams = typing.TypedDict(
+    'RequestRequiredHeaderParams',
+    {
+{{#each headerParams}}
+{{#if required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/if}}
+{{/each}}
+    }
+)
+RequestOptionalHeaderParams = typing.TypedDict(
+    'RequestOptionalHeaderParams',
+    {
+{{#each headerParams}}
+{{#unless required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/unless}}
+{{/each}}
+    },
+    total=False
+)
+
+
+class RequestHeaderParams(RequestRequiredHeaderParams, RequestOptionalHeaderParams):
+    pass
+
+
+{{#each headerParams}}
+{{> endpoint_parameter }}
+{{/each}}
+{{/if}}
+{{#if pathParams}}
+# path params
+{{#each pathParams}}
+{{#with schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{/each}}
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+{{#each pathParams}}
+{{#if required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/if}}
+{{/each}}
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+{{#each pathParams}}
+{{#unless required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/unless}}
+{{/each}}
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+{{#each pathParams}}
+{{> endpoint_parameter }}
+{{/each}}
+{{/if}}
+{{#if cookieParams}}
+# cookie params
+{{#each cookieParams}}
+{{#with schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{/each}}
+RequestRequiredCookieParams = typing.TypedDict(
+    'RequestRequiredCookieParams',
+    {
+{{#each cookieParams}}
+{{#if required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/if}}
+{{/each}}
+    }
+)
+RequestOptionalCookieParams = typing.TypedDict(
+    'RequestOptionalCookieParams',
+    {
+{{#each cookieParams}}
+{{#unless required}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/unless}}
+{{/each}}
+    },
+    total=False
+)
+
+
+class RequestCookieParams(RequestRequiredCookieParams, RequestOptionalCookieParams):
+    pass
+
+
+{{#each cookieParams}}
+{{> endpoint_parameter }}
+{{/each}}
+{{/if}}
+{{#with bodyParam}}
+# body param
+{{#each content}}
+{{#with this.schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{/each}}
+
+
+request_body_{{paramName}} = api_client.RequestBody(
+    content={
+{{#each content}}
+        '{{@key}}': api_client.MediaType(
+            schema={{this.schema.baseName}}),
+{{/each}}
+    },
+{{#if required}}
+    required=True,
+{{/if}}
+)
+{{/with}}
+_path = '{{{path}}}'
+_method = '{{httpMethod}}'
+{{#each authMethods}}
+{{#if @first}}
+_auth = [
+{{/if}}
+    '{{name}}',
+{{#if @last}}
+]
+{{/if}}
+{{/each}}
+{{#each servers}}
+{{#if @first}}
+_servers = (
+{{/if}}
+    {
+        'url': "{{{url}}}",
+        'description': "{{{description}}}{{#unless description}}No description provided{{/unless}}",
+        {{#each variables}}
+        {{#if @first}}
+        'variables': {
+        {{/if}}
+            '{{{name}}}': {
+                'description': "{{{description}}}{{#unless description}}No description provided{{/unless}}",
+                'default_value': "{{{defaultValue}}}",
+                {{#each enumValues}}
+                {{#if @first}}
+                'enum_values': [
+                {{/if}}
+                    "{{{.}}}"{{#unless @last}},{{/unless}}
+                {{#if @last}}
+                ]
+                {{/if}}
+                {{/each}}
+                }{{#unless @last}},{{/unless}}
+        {{#if @last}}
+            }
+        {{/if}}
+        {{/each}}
+    },
+{{#if @last}}
+)
+{{/if}}
+{{/each}}
+{{#each responses}}
+{{#each responseHeaders}}
+{{#with schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{paramName}}_parameter = api_client.HeaderParameter(
+    name="{{baseName}}",
+{{#if style}}
+    style=api_client.ParameterStyle.{{style}},
+{{/if}}
+{{#if schema}}
+{{#with schema}}
+    schema={{baseName}},
+{{/with}}
+{{/if}}
+{{#if required}}
+    required=True,
+{{/if}}
+{{#if isExplode}}
+    explode=True,
+{{/if}}
+)
+{{/each}}
+{{#each content}}
+{{#with this.schema}}
+{{> model_templates/schema }}
+{{/with}}
+{{/each}}
+{{#if responseHeaders}}
+ResponseHeadersFor{{code}} = typing.TypedDict(
+    'ResponseHeadersFor{{code}}',
+    {
+{{#each responseHeaders}}
+        '{{baseName}}': {{#with schema}}{{baseName}},{{/with}}
+{{/each}}
+    }
+)
+{{/if}}
+
+
+@dataclass
+{{#if isDefault}}
+class ApiResponseForDefault(api_client.ApiResponse):
+{{else}}
+class ApiResponseFor{{code}}(api_client.ApiResponse):
+{{/if}}
+    response: urllib3.HTTPResponse
+{{#and responseHeaders content}}
+    body: typing.Union[
+{{#each content}}
+        {{this.schema.baseName}},
+{{/each}}
+    ]
+    headers: ResponseHeadersFor{{code}}
+{{else}}
+{{#or responseHeaders content}}
+{{#if responseHeaders}}
+    headers: ResponseHeadersFor{{code}}
+    body: Unset = unset
+{{else}}
+    body: typing.Union[
+{{#each content}}
+        {{this.schema.baseName}},
+{{/each}}
+    ]
+    headers: Unset = unset
+{{/if}}
+{{/or}}
+{{/and}}
+{{#unless responseHeaders}}
+{{#unless content}}
+    body: Unset = unset
+    headers: Unset = unset
+{{/unless}}
+{{/unless}}
+
+
+{{#if isDefault}}
+_response_for_default = api_client.OpenApiResponse(
+    response_cls=ApiResponseForDefault,
+{{else}}
+_response_for_{{code}} = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor{{code}},
+{{/if}}
+{{#each content}}
+{{#if @first}}
+    content={
+{{/if}}
+        '{{@key}}': api_client.MediaType(
+            schema={{this.schema.baseName}}),
+{{#if @last}}
+    },
+{{/if}}
+{{/each}}
+{{#if responseHeaders}}
+    headers=[
+{{#each responseHeaders}}
+        {{paramName}}_parameter,
+{{/each}}
+    ]
+{{/if}}
+)
+{{/each}}
+_status_code_to_response = {
+{{#each responses}}
+{{#if isDefault}}
+    'default': _response_for_default,
+{{else}}
+    '{{code}}': _response_for_{{code}},
+{{/if}}
+{{/each}}
+}
+{{#each produces}}
+{{#if @first}}
+_all_accept_content_types = (
+{{/if}}
+    '{{this.mediaType}}',
+{{#if @last}}
+)
+{{/if}}
+{{/each}}
+
+
+class {{operationIdCamelCase}}(api_client.Api):
+
+    def {{operationId}}(
+        self: api_client.Api,
+    {{#if bodyParam}}
+    {{#with bodyParam}}
+        {{baseName}}: typing.Union[{{#each content}}{{#unless @first}}, {{/unless}}{{this.schema.baseName}}{{/each}}{{#unless required}}, Unset] = unset{{else}}]{{/unless}},
+    {{/with}}
+    {{/if}}
+    {{#if queryParams}}
+        query_params: RequestQueryParams = frozendict(),
+    {{/if}}
+    {{#if headerParams}}
+        header_params: RequestHeaderParams = frozendict(),
+    {{/if}}
+    {{#if pathParams}}
+        path_params: RequestPathParams = frozendict(),
+    {{/if}}
+    {{#if cookieParams}}
+        cookie_params: RequestCookieParams = frozendict(),
+    {{/if}}
+    {{#with bodyParam}}
+    {{#each content}}
+    {{#if @first}}
+        content_type: str = '{{@key}}',
+    {{/if}}
+    {{/each}}
+    {{/with}}
+    {{#if produces}}
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+    {{/if}}
+    {{#if servers}}
+        host_index: typing.Optional[int] = None,
+    {{/if}}
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+    {{#each responses}}
+        {{#if isDefault}}
+        ApiResponseForDefault,
+        {{else}}
+            {{#if is2xx}}
+        ApiResponseFor{{code}},
+            {{/if}}
+        {{/if}}
+    {{/each}}
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+    {{#if summary}}
+        {{summary}}
+    {{/if}}
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+    {{#if queryParams}}
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+    {{/if}}
+    {{#if headerParams}}
+        self._verify_typed_dict_inputs(RequestHeaderParams, header_params)
+    {{/if}}
+    {{#if pathParams}}
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+    {{/if}}
+    {{#if cookieParams}}
+        self._verify_typed_dict_inputs(RequestCookieParams, cookie_params)
+    {{/if}}
+    {{#if pathParams}}
+
+        _path_params = {}
+        for parameter in (
+    {{#each pathParams}}
+            request_path_{{paramName}},
+    {{/each}}
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+    {{/if}}
+    {{#if queryParams}}
+
+        _query_params = []
+        for parameter in (
+    {{#each queryParams}}
+            request_query_{{paramName}},
+    {{/each}}
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+    {{/if}}
+    {{#or headerParams bodyParam produces}}
+
+        _headers = HTTPHeaderDict()
+    {{else}}
+    {{/or}}
+    {{#if headerParams}}
+        for parameter in (
+    {{#each headerParams}}
+            request_header_{{paramName}},
+    {{/each}}
+        ):
+            parameter_data = header_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _headers.extend(serialized_data)
+    {{/if}}
+        # TODO add cookie handling
+    {{#if produces}}
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+    {{/if}}
+    {{#with bodyParam}}
+
+    {{#if required}}
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+    {{/if}}
+        _fields = None
+        _body = None
+    {{#if required}}
+        {{> endpoint_body_serialization }}
+    {{else}}
+        if body is not unset:
+            {{> endpoint_body_serialization }}
+    {{/if}}
+    {{/with}}
+    {{#if servers}}
+
+        host = self.get_host('{{operationId}}', _servers, host_index)
+    {{/if}}
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+    {{#if pathParams}}
+            path_params=_path_params,
+    {{/if}}
+    {{#if queryParams}}
+            query_params=tuple(_query_params),
+    {{/if}}
+    {{#or headerParams bodyParam produces}}
+            headers=_headers,
+    {{/or}}
+    {{#if bodyParam}}
+            fields=_fields,
+            body=_body,
+    {{/if}}
+    {{#if hasAuthMethods}}
+            auth_settings=_auth,
+    {{/if}}
+    {{#if servers}}
+            host=host,
+    {{/if}}
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                {{#if hasDefaultResponse}}
+                default_response = _status_code_to_response.get('default')
+                if default_response:
+                    api_response = default_response.deserialize(response, self.api_client.configuration)
+                else:
+                    api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+                {{else}}
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+                {{/if}}
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
+{{/with}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/endpoint_body_serialization.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/endpoint_body_serialization.handlebars
new file mode 100644
index 00000000000..f00d9f05d27
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/endpoint_body_serialization.handlebars
@@ -0,0 +1,6 @@
+serialized_data = request_body_{{paramName}}.serialize(body, content_type)
+_headers.add('Content-Type', content_type)
+if 'fields' in serialized_data:
+    _fields = serialized_data['fields']
+elif 'body' in serialized_data:
+    _body = serialized_data['body']
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/endpoint_parameter.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/endpoint_parameter.handlebars
new file mode 100644
index 00000000000..4b9d815af83
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/endpoint_parameter.handlebars
@@ -0,0 +1,17 @@
+request_{{#if isQueryParam}}query{{/if}}{{#if isPathParam}}path{{/if}}{{#if isHeaderParam}}header{{/if}}{{#if isCookieParam}}cookie{{/if}}_{{paramName}} = api_client.{{#if isQueryParam}}Query{{/if}}{{#if isPathParam}}Path{{/if}}{{#if isHeaderParam}}Header{{/if}}{{#if isCookieParam}}Cookie{{/if}}Parameter(
+    name="{{baseName}}",
+{{#if style}}
+    style=api_client.ParameterStyle.{{style}},
+{{/if}}
+{{#if schema}}
+{{#with schema}}
+    schema={{baseName}},
+{{/with}}
+{{/if}}
+{{#if required}}
+    required=True,
+{{/if}}
+{{#if isExplode}}
+    explode=True,
+{{/if}}
+)
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/exceptions.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/exceptions.handlebars
new file mode 100644
index 00000000000..fa5f7534789
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/exceptions.handlebars
@@ -0,0 +1,129 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+
+class OpenApiException(Exception):
+    """The base exception class for all OpenAPIExceptions"""
+
+
+class ApiTypeError(OpenApiException, TypeError):
+    def __init__(self, msg, path_to_item=None, valid_classes=None,
+                 key_type=None):
+        """ Raises an exception for TypeErrors
+
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (list): a list of keys an indices to get to the
+                                 current_item
+                                 None if unset
+            valid_classes (tuple): the primitive classes that current item
+                                   should be an instance of
+                                   None if unset
+            key_type (bool): False if our value is a value in a dict
+                             True if it is a key in a dict
+                             False if our item is an item in a list
+                             None if unset
+        """
+        self.path_to_item = path_to_item
+        self.valid_classes = valid_classes
+        self.key_type = key_type
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiTypeError, self).__init__(full_msg)
+
+
+class ApiValueError(OpenApiException, ValueError):
+    def __init__(self, msg, path_to_item=None):
+        """
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (list) the path to the exception in the
+                received_data dict. None if unset
+        """
+
+        self.path_to_item = path_to_item
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiValueError, self).__init__(full_msg)
+
+
+class ApiAttributeError(OpenApiException, AttributeError):
+    def __init__(self, msg, path_to_item=None):
+        """
+        Raised when an attribute reference or assignment fails.
+
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (None/list) the path to the exception in the
+                received_data dict
+        """
+        self.path_to_item = path_to_item
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiAttributeError, self).__init__(full_msg)
+
+
+class ApiKeyError(OpenApiException, KeyError):
+    def __init__(self, msg, path_to_item=None):
+        """
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (None/list) the path to the exception in the
+                received_data dict
+        """
+        self.path_to_item = path_to_item
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiKeyError, self).__init__(full_msg)
+
+
+class ApiException(OpenApiException):
+
+    def __init__(self, status=None, reason=None, api_response: '{{packageName}}.api_client.ApiResponse' = None):
+        if api_response:
+            self.status = api_response.response.status
+            self.reason = api_response.response.reason
+            self.body = api_response.response.data
+            self.headers = api_response.response.getheaders()
+        else:
+            self.status = status
+            self.reason = reason
+            self.body = None
+            self.headers = None
+
+    def __str__(self):
+        """Custom error messages for exception"""
+        error_message = "({0})\n"\
+                        "Reason: {1}\n".format(self.status, self.reason)
+        if self.headers:
+            error_message += "HTTP response headers: {0}\n".format(
+                self.headers)
+
+        if self.body:
+            error_message += "HTTP response body: {0}\n".format(self.body)
+
+        return error_message
+
+
+def render_path(path_to_item):
+    """Returns a string representation of a path"""
+    result = ""
+    for pth in path_to_item:
+        if isinstance(pth, int):
+            result += "[{0}]".format(pth)
+        else:
+            result += "['{0}']".format(pth)
+    return result
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/git_push.sh.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/git_push.sh.handlebars
new file mode 100644
index 00000000000..8b3f689c912
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/git_push.sh.handlebars
@@ -0,0 +1,58 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-pestore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="{{{gitHost}}}"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="{{{gitUserId}}}"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="{{{gitRepoId}}}"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="{{{releaseNote}}}"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=`git remote`
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:${GIT_TOKEN}@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'
+
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/gitignore.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/gitignore.handlebars
new file mode 100644
index 00000000000..a62e8aba43f
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/gitignore.handlebars
@@ -0,0 +1,67 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+dev-requirements.txt.log
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+venv/
+.venv/
+.python-version
+.pytest_cache
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+#Ipython Notebook
+.ipynb_checkpoints
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/gitlab-ci.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/gitlab-ci.handlebars
new file mode 100644
index 00000000000..0cfe8f74ecf
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/gitlab-ci.handlebars
@@ -0,0 +1,29 @@
+# ref: https://docs.gitlab.com/ee/ci/README.html
+
+stages:
+  - test
+
+.tests:
+  stage: test
+  script:
+   - pip install -r requirements.txt
+   - pip install -r test-requirements.txt
+   {{#if useNose}}
+   - nosetests
+   {{/if}}
+   {{#unless useNose}}
+   - pytest --cov={{{packageName}}}
+   {{/unless}}
+
+test-3.5:
+  extends: .tests
+  image: python:3.5-alpine
+test-3.6:
+  extends: .tests
+  image: python:3.6-alpine
+test-3.7:
+  extends: .tests
+  image: python:3.7-alpine
+test-3.8:
+  extends: .tests
+  image: python:3.8-alpine
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model.handlebars
new file mode 100644
index 00000000000..d8c1e63ae4d
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model.handlebars
@@ -0,0 +1,17 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+{{#each models}}
+{{#with model}}
+{{> model_templates/imports_schema_types }}
+{{> model_templates/schema }}
+{{> model_templates/imports_schemas }}
+{{/with}}
+{{/each}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_doc.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_doc.handlebars
new file mode 100644
index 00000000000..2c4136a142a
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_doc.handlebars
@@ -0,0 +1,9 @@
+{{#each models}}
+{{#with model}}
+# {{classname}}
+{{> schema_doc }}
+{{/with}}
+{{/each}}
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/composed_schemas.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/composed_schemas.handlebars
new file mode 100644
index 00000000000..6aef3311b6e
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/composed_schemas.handlebars
@@ -0,0 +1,86 @@
+@classmethod
+@property
+def _composed_schemas(cls):
+    # we need this here to make our import statements work
+    # we must store _composed_schemas in here so the code is only run
+    # when we invoke this method. If we kept this at the class
+    # level we would get an error because the class level
+    # code would be run when this module is imported, and these composed
+    # classes don't exist yet because their module has not finished
+    # loading
+{{#with composedSchemas}}
+{{#each allOf}}
+{{#unless complexType}}
+{{#unless isAnyType}}
+    {{> model_templates/schema }}
+{{/unless}}
+{{/unless}}
+{{#if isAnyType}}
+    {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}} = AnyTypeSchema
+{{/if}}
+{{/each}}
+{{#each oneOf}}
+{{#unless complexType}}
+{{#unless isAnyType}}
+    {{> model_templates/schema }}
+{{/unless}}
+{{/unless}}
+{{#if isAnyType}}
+    {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}} = AnyTypeSchema
+{{/if}}
+{{/each}}
+{{#each anyOf}}
+{{#unless complexType}}
+{{#unless isAnyType}}
+    {{> model_templates/schema }}
+{{/unless}}
+{{/unless}}
+{{#if isAnyType}}
+    {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}} = AnyTypeSchema
+{{/if}}
+{{/each}}
+{{/with}}
+    return {
+        'allOf': [
+{{#with composedSchemas}}
+{{#each allOf}}
+{{#if complexType}}
+            {{complexType}},
+{{/if}}
+{{#unless complexType}}
+            {{#if nameInSnakeCase}}{{name}}{{/if}}{{#unless nameInSnakeCase}}{{baseName}}{{/unless}},
+{{/unless}}
+{{/each}}
+        ],
+        'oneOf': [
+{{#each oneOf}}
+{{#if complexType}}
+            {{complexType}},
+{{/if}}
+{{#unless complexType}}
+{{#if isAnyType}}
+            AnyTypeSchema,
+{{/if}}
+{{#unless isAnyType}}
+            {{#if nameInSnakeCase}}{{name}}{{/if}}{{#unless nameInSnakeCase}}{{baseName}}{{/unless}},
+{{/unless}}
+{{/unless}}
+{{/each}}
+        ],
+        'anyOf': [
+{{#each anyOf}}
+{{#if complexType}}
+            {{complexType}},
+{{/if}}
+{{#unless complexType}}
+{{#if isAnyType}}
+            AnyTypeSchema,
+{{/if}}
+{{#unless isAnyType}}
+            {{#if nameInSnakeCase}}{{name}}{{/if}}{{#unless nameInSnakeCase}}{{baseName}}{{/unless}},
+{{/unless}}
+{{/unless}}
+{{/each}}
+{{/with}}
+        ],
+    }
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/dict_partial.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/dict_partial.handlebars
new file mode 100644
index 00000000000..15338b38f1d
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/dict_partial.handlebars
@@ -0,0 +1,54 @@
+{{#if getHasRequired}}
+    _required_property_names = set((
+    {{#each requiredVars}}
+        '{{baseName}}',
+    {{/each}}
+    ))
+{{/if}}
+{{#each vars}}
+{{#if complexType}}
+
+    @classmethod
+    @property
+    def {{baseName}}(cls) -> typing.Type['{{complexType}}']:
+        return {{complexType}}
+{{else}}
+    {{> model_templates/schema }}
+{{/if}}
+{{/each}}
+{{#if getHasDiscriminatorWithNonEmptyMapping}}
+{{#with discriminator}}
+{{#each mappedModels}}
+{{#if @first}}
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            '{{{propertyBaseName}}}': {
+{{/if}}
+                '{{mappingName}}': {{{modelName}}},
+{{#if @last}}
+            }
+        }
+{{/if}}
+{{/each}}
+{{/with}}
+{{/if}}
+{{#with additionalProperties}}
+{{#if complexType}}
+
+    @classmethod
+    @property
+    def _additional_properties(cls) -> typing.Type['{{complexType}}']:
+        return {{complexType}}
+{{/if}}
+{{#unless complexType}}
+{{#unless isAnyType}}
+    {{> model_templates/schema }}
+{{/unless}}
+{{/unless}}
+{{/with}}
+{{#unless additionalProperties}}
+    _additional_properties = None
+{{/unless}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/enum_value_to_name.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/enum_value_to_name.handlebars
new file mode 100644
index 00000000000..ea2cb759fbe
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/enum_value_to_name.handlebars
@@ -0,0 +1,12 @@
+_SchemaEnumMaker(
+    enum_value_to_name={
+{{#if isNull}}
+        None: "NONE",
+{{/if}}
+{{#with allowableValues}}
+{{#each enumVars}}
+        {{{value}}}: "{{name}}",
+{{/each}}
+{{/with}}
+    }
+),
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/enums.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/enums.handlebars
new file mode 100644
index 00000000000..5cbc68dc173
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/enums.handlebars
@@ -0,0 +1,16 @@
+{{#if isNull}}
+
+@classmethod
+@property
+def NONE(cls):
+    return cls._enum_by_value[None](None)
+{{/if}}
+{{#with allowableValues}}
+{{#each enumVars}}
+
+@classmethod
+@property
+def {{name}}(cls):
+    return cls._enum_by_value[{{{value}}}]({{{value}}})
+{{/each}}
+{{/with}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/imports_schema_types.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/imports_schema_types.handlebars
new file mode 100644
index 00000000000..38015e35044
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/imports_schema_types.handlebars
@@ -0,0 +1,42 @@
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from {{packageName}}.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/imports_schemas.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/imports_schemas.handlebars
new file mode 100644
index 00000000000..b925cf92c69
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/imports_schemas.handlebars
@@ -0,0 +1,6 @@
+{{#each imports}}
+{{#if @first}}
+
+{{/if}}
+{{{.}}}
+{{/each}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/new.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/new.handlebars
new file mode 100644
index 00000000000..e74461e8043
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/new.handlebars
@@ -0,0 +1,53 @@
+def __new__(
+    cls,
+    *args: typing.Union[{{#if isAnyType}}dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes{{/if}}{{#if isUnboundedInteger}}int, {{/if}}{{#if isNumber}}float, {{/if}}{{#if isBoolean}}bool, {{/if}}{{#if isArray}}list, tuple, {{/if}}{{#if isMap}}dict, frozendict, {{/if}}{{#if isString}}str, {{/if}}{{#if isNull}}None, {{/if}}],
+{{#unless isNull}}
+{{#if getHasRequired}}
+{{#each requiredVars}}
+{{#unless nameInSnakeCase}}
+    {{baseName}}: {{baseName}},
+{{/unless}}
+{{/each}}
+{{/if}}
+{{/unless}}
+{{#each vars}}
+{{#unless nameInSnakeCase}}
+{{#unless getRequired}}
+{{#unless complexType}}
+    {{baseName}}: typing.Union[{{baseName}}, Unset] = unset,
+{{/unless}}
+{{#if complexType}}
+    {{baseName}}: typing.Union['{{complexType}}', Unset] = unset,
+{{/if}}
+{{/unless}}
+{{/unless}}
+{{/each}}
+    _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+{{#with additionalProperties}}
+    **kwargs: typing.Type[Schema],
+{{/with}}
+) -> '{{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}}':
+    return super().__new__(
+        cls,
+        *args,
+{{#unless isNull}}
+{{#if getHasRequired}}
+{{#each requiredVars}}
+{{#unless nameInSnakeCase}}
+        {{baseName}}={{baseName}},
+{{/unless}}
+{{/each}}
+{{/if}}
+{{/unless}}
+{{#each vars}}
+{{#unless getRequired}}
+{{#unless nameInSnakeCase}}
+        {{baseName}}={{baseName}},
+{{/unless}}
+{{/unless}}
+{{/each}}
+        _instantiation_metadata=_instantiation_metadata,
+{{#with additionalProperties}}
+        **kwargs,
+{{/with}}
+    )
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema.handlebars
new file mode 100644
index 00000000000..7523d39f0ea
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema.handlebars
@@ -0,0 +1,46 @@
+{{#if composedSchemas}}
+{{> model_templates/schema_composed_or_anytype }}
+{{/if}}
+{{#unless composedSchemas}}
+    {{#if getHasMultipleTypes}}
+{{> model_templates/schema_composed_or_anytype }}
+    {{else}}
+        {{#or isMap isArray isAnyType}}
+            {{#if isMap}}
+                {{#or hasVars hasValidation hasRequiredVars getHasDiscriminatorWithNonEmptyMapping}}
+{{> model_templates/schema_dict }}
+                {{else}}
+                    {{#if additionalPropertiesIsAnyType}}
+{{> model_templates/var_equals_cls }}
+                    {{else}}
+{{> model_templates/schema_dict }}
+                    {{/if}}
+                {{/or}}
+            {{/if}}
+            {{#if isArray}}
+                {{#or hasItems hasValidation}}
+{{> model_templates/schema_list }}
+                {{else}}
+{{> model_templates/var_equals_cls }}
+                {{/or}}
+            {{/if}}
+            {{#if isAnyType}}
+                {{#or isEnum hasVars hasValidation hasRequiredVars getHasDiscriminatorWithNonEmptyMapping items}}
+{{> model_templates/schema_composed_or_anytype }}
+                {{else}}
+{{> model_templates/var_equals_cls }}
+                {{/or}}
+            {{/if}}
+        {{else}}
+            {{#or isEnum hasValidation}}
+{{> model_templates/schema_simple }}
+            {{else}}
+{{> model_templates/var_equals_cls }}
+            {{/or}}
+        {{/or}}
+        {{#if nameInSnakeCase}}
+locals()['{{baseName}}'] = {{name}}
+del locals()['{{name}}']
+        {{/if}}
+    {{/if}}
+{{/unless}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_composed_or_anytype.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_composed_or_anytype.handlebars
new file mode 100644
index 00000000000..763da96feeb
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_composed_or_anytype.handlebars
@@ -0,0 +1,48 @@
+
+
+class {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}}(
+{{#if hasValidation}}
+    {{> model_templates/validations }}
+{{/if}}
+{{#if getIsAnyType}}
+    {{#if composedSchemas}}
+    ComposedSchema
+    {{else}}
+    AnyTypeSchema
+    {{/if}}
+{{else}}
+    {{#if getHasMultipleTypes}}
+    _SchemaTypeChecker(typing.Union[{{#if isArray}}tuple, {{/if}}{{#if isMap}}frozendict, {{/if}}{{#if isNull}}none_type, {{/if}}{{#if isString}}str, {{/if}}{{#if isByteArray}}str, {{/if}}{{#if isUnboundedInteger}}decimal.Decimal, {{/if}}{{#if isShort}}decimal.Decimal, {{/if}}{{#if isLong}}decimal.Decimal, {{/if}}{{#if isFloat}}decimal.Decimal, {{/if}}{{#if isDouble}}decimal.Decimal, {{/if}}{{#if isNumber}}decimal.Decimal, {{/if}}{{#if isDate}}str, {{/if}}{{#if isDateTime}}str, {{/if}}{{#if isDecimal}}str, {{/if}}{{#if isBoolean}}bool, {{/if}}]),
+    {{/if}}
+    {{#if composedSchemas}}
+    ComposedBase,
+    {{/if}}
+    {{#if isEnum}}
+    {{> model_templates/enum_value_to_name }}
+    {{/if}}
+    {{> model_templates/xbase_schema }}
+{{/if}}
+):
+{{#if this.classname}}
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+{{#if description}}
+
+    {{{unescapedDescription}}}
+{{/if}}
+    """
+{{/if}}
+{{#or isMap isAnyType}}
+{{> model_templates/dict_partial }}
+{{/or}}
+{{#if composedSchemas}}
+
+    {{> model_templates/composed_schemas }}
+{{/if}}
+{{#if isEnum}}
+    {{> model_templates/enums }}
+{{/if}}
+
+    {{> model_templates/new }}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_dict.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_dict.handlebars
new file mode 100644
index 00000000000..c17e0f5764c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_dict.handlebars
@@ -0,0 +1,23 @@
+
+
+class {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}}(
+{{#if hasValidation}}
+    {{> model_templates/validations }}
+{{/if}}
+    DictSchema
+):
+{{#if this.classname}}
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+{{#if description}}
+
+    {{{unescapedDescription}}}
+{{/if}}
+    """
+{{/if}}
+{{> model_templates/dict_partial }}
+
+
+    {{> model_templates/new }}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_list.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_list.handlebars
new file mode 100644
index 00000000000..542b486ab4c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_list.handlebars
@@ -0,0 +1,30 @@
+
+
+class {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}}(
+{{#if hasValidation}}
+    {{> model_templates/validations }}
+{{/if}}
+    ListSchema
+):
+{{#if this.classname}}
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+{{#if description}}
+
+    {{{unescapedDescription}}}
+{{/if}}
+    """
+{{/if}}
+{{#with items}}
+{{#if complexType}}
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['{{complexType}}']:
+        return {{complexType}}
+{{else}}
+    {{> model_templates/schema }}
+{{/if}}
+{{/with}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_simple.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_simple.handlebars
new file mode 100644
index 00000000000..ea12a00ff40
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/schema_simple.handlebars
@@ -0,0 +1,27 @@
+
+
+class {{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}}(
+{{#if hasValidation}}
+    {{> model_templates/validations }}
+{{/if}}
+{{#if isEnum}}
+    {{> model_templates/enum_value_to_name }}
+{{/if}}
+    {{> model_templates/xbase_schema }}
+):
+{{#if this.classname}}
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+{{#if description}}
+
+    {{{unescapedDescription}}}
+{{/if}}
+    """
+{{/if}}
+{{#if isEnum}}
+    {{> model_templates/enums }}
+{{else}}
+    pass
+{{/if}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/validations.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/validations.handlebars
new file mode 100644
index 00000000000..2384ac063d2
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/validations.handlebars
@@ -0,0 +1,50 @@
+_SchemaValidator(
+{{#if getUniqueItems}}
+    unique_items=True,
+{{/if}}
+{{#if maxLength}}
+    max_length={{maxLength}},
+{{/if}}
+{{#if minLength}}
+    min_length={{minLength}},
+{{/if}}
+{{#if maxItems}}
+    max_items={{maxItems}},
+{{/if}}
+{{#if minItems}}
+    min_items={{minItems}},
+{{/if}}
+{{#if maxProperties}}
+    max_properties={{maxProperties}},
+{{/if}}
+{{#if minProperties}}
+    min_properties={{minProperties}},
+{{/if}}
+{{#if maximum}}
+    {{#if exclusiveMaximum}}exclusive_maximum{{/if}}inclusive_maximum{{#unless exclusiveMaximum}}{{/unless}}={{maximum}},
+{{/if}}
+{{#if minimum}}
+    {{#if exclusiveMinimum}}exclusive_minimum{{/if}}inclusive_minimum{{#unless exclusiveMinimum}}{{/unless}}={{minimum}},
+{{/if}}
+{{#if pattern}}
+    regex=[{
+{{#if vendorExtensions.x-regex}}
+        'pattern': r'{{{vendorExtensions.x-regex}}}',  # noqa: E501
+{{else}}
+        'pattern': r'{{{pattern}}}',  # noqa: E501
+{{/if}}
+{{#each vendorExtensions.x-modifiers}}
+{{#if @first}}
+        'flags': (
+{{/if}}
+            {{#unless @first}}| {{/unless}}re.{{.}}
+{{#if @last}}
+        )
+{{/if}}
+{{/each}}
+    }],
+{{/if}}
+{{#if multipleOf}}
+    multiple_of=[{{multipleOf}}],
+{{/if}}
+),
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/var_equals_cls.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/var_equals_cls.handlebars
new file mode 100644
index 00000000000..24f52cac6ca
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/var_equals_cls.handlebars
@@ -0,0 +1 @@
+{{#if this.classname}}{{classname}}{{else}}{{#if nameInSnakeCase}}{{name}}{{else}}{{baseName}}{{/if}}{{/if}} = {{#if complexType}}{{complexType}}{{else}}{{#if isNullable}}Nullable{{/if}}{{#if getIsNull}}None{{/if}}{{#if isAnyType}}AnyType{{/if}}{{#if isMap}}Dict{{/if}}{{#if isArray}}List{{/if}}{{#if isString}}Str{{/if}}{{#if isByteArray}}Str{{/if}}{{#if isDate}}Date{{/if}}{{#if isDateTime}}DateTime{{/if}}{{#if isDecimal}}Decimal{{/if}}{{#if isUnboundedInteger}}Int{{/if}}{{#if isShort}}Int32{{/if}}{{#if isLong}}Int64{{/if}}{{#if isFloat}}Float32{{/if}}{{#if isDouble}}Float64{{/if}}{{#if isNumber}}Number{{/if}}{{#if isBoolean}}Bool{{/if}}{{#if isBinary}}Binary{{/if}}Schema{{/if}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_templates/xbase_schema.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/xbase_schema.handlebars
new file mode 100644
index 00000000000..87fe3d0b324
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_templates/xbase_schema.handlebars
@@ -0,0 +1,51 @@
+{{#if isArray}}
+List{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isMap}}
+Dict{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isString}}
+Str{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isByteArray}}
+Str{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isUnboundedInteger}}
+Int{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isNumber}}
+Number{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#isShort}}
+Int32{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/isShort}}
+{{#isLong}}
+Int64{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/isLong}}
+{{#isFloat}}
+Float32{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/isFloat}}
+{{#isDouble}}
+Float64{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/isDouble}}
+{{#if isDate}}
+Date{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isDateTime}}
+DateTime{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isDecimal}}
+Decimal{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isBoolean}}
+Bool{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isBinary}}
+Binary{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if isNull}}
+None{{#if getHasMultipleTypes}}Base,{{else}}Schema{{/if}}
+{{/if}}
+{{#if getHasMultipleTypes}}
+Schema
+{{/if}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/model_test.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/model_test.handlebars
new file mode 100644
index 00000000000..48a4a7c85a1
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/model_test.handlebars
@@ -0,0 +1,32 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+import unittest
+
+import {{packageName}}
+{{#each models}}
+{{#with model}}
+from {{packageName}}.{{modelPackage}}.{{classFilename}} import {{classname}}
+
+
+class Test{{classname}}(unittest.TestCase):
+    """{{classname}} unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_{{classname}}(self):
+        """Test {{classname}}"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = {{classname}}()  # noqa: E501
+        pass
+
+{{/with}}
+{{/each}}
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/partial_header.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/partial_header.handlebars
new file mode 100644
index 00000000000..19b633be257
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/partial_header.handlebars
@@ -0,0 +1,17 @@
+"""
+{{#if appName}}
+    {{{appName}}}
+{{/if}}
+
+{{#if appDescription}}
+    {{{appDescription}}}  # noqa: E501
+{{/if}}
+
+    {{#if version}}
+    The version of the OpenAPI document: {{{version}}}
+    {{/if}}
+    {{#if infoEmail}}
+    Contact: {{{infoEmail}}}
+    {{/if}}
+    Generated by: https://openapi-generator.tech
+"""
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/requirements.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/requirements.handlebars
new file mode 100644
index 00000000000..c9227e58a1b
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/requirements.handlebars
@@ -0,0 +1,5 @@
+certifi >= 14.05.14
+frozendict >= 2.0.3
+python_dateutil >= 2.5.3
+setuptools >= 21.0.0
+urllib3 >= 1.15.1
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/rest.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/rest.handlebars
new file mode 100644
index 00000000000..e30831938f1
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/rest.handlebars
@@ -0,0 +1,251 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+import logging
+import ssl
+from urllib.parse import urlencode
+import typing
+
+import certifi
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from {{packageName}}.exceptions import ApiException, ApiValueError
+
+
+logger = logging.getLogger(__name__)
+
+
+class RESTClientObject(object):
+
+    def __init__(self, configuration, pools_size=4, maxsize=None):
+        # urllib3.PoolManager will pass all kw parameters to connectionpool
+        # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/poolmanager.py#L75  # noqa: E501
+        # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/connectionpool.py#L680  # noqa: E501
+        # maxsize is the number of requests to host that are allowed in parallel  # noqa: E501
+        # Custom SSL certificates and client certificates: http://urllib3.readthedocs.io/en/latest/advanced-usage.html  # noqa: E501
+
+        # cert_reqs
+        if configuration.verify_ssl:
+            cert_reqs = ssl.CERT_REQUIRED
+        else:
+            cert_reqs = ssl.CERT_NONE
+
+        # ca_certs
+        if configuration.ssl_ca_cert:
+            ca_certs = configuration.ssl_ca_cert
+        else:
+            # if not set certificate file, use Mozilla's root certificates.
+            ca_certs = certifi.where()
+
+        addition_pool_args = {}
+        if configuration.assert_hostname is not None:
+            addition_pool_args['assert_hostname'] = configuration.assert_hostname  # noqa: E501
+
+        if configuration.retries is not None:
+            addition_pool_args['retries'] = configuration.retries
+
+        if configuration.socket_options is not None:
+            addition_pool_args['socket_options'] = configuration.socket_options
+
+        if maxsize is None:
+            if configuration.connection_pool_maxsize is not None:
+                maxsize = configuration.connection_pool_maxsize
+            else:
+                maxsize = 4
+
+        # https pool manager
+        if configuration.proxy:
+            self.pool_manager = urllib3.ProxyManager(
+                num_pools=pools_size,
+                maxsize=maxsize,
+                cert_reqs=cert_reqs,
+                ca_certs=ca_certs,
+                cert_file=configuration.cert_file,
+                key_file=configuration.key_file,
+                proxy_url=configuration.proxy,
+                proxy_headers=configuration.proxy_headers,
+                **addition_pool_args
+            )
+        else:
+            self.pool_manager = urllib3.PoolManager(
+                num_pools=pools_size,
+                maxsize=maxsize,
+                cert_reqs=cert_reqs,
+                ca_certs=ca_certs,
+                cert_file=configuration.cert_file,
+                key_file=configuration.key_file,
+                **addition_pool_args
+            )
+
+    def request(
+        self,
+        method: str,
+        url: str,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, typing.Any], ...]] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+    ) -> urllib3.HTTPResponse:
+        """Perform requests.
+
+        :param method: http request method
+        :param url: http request url
+        :param query_params: query parameters in the url
+        :param headers: http request headers
+        :param body: request body, for other types
+        :param fields: request parameters for
+                                `application/x-www-form-urlencoded`
+                                or `multipart/form-data`
+        :param stream: if True, the urllib3.HTTPResponse object will
+                                be returned without reading/decoding response
+                                data. Default is False.
+        :param timeout: timeout setting for this request. If one
+                                number provided, it will be total request
+                                timeout. It can also be a pair (tuple) of
+                                (connection, read) timeouts.
+        """
+        method = method.upper()
+        assert method in ['GET', 'HEAD', 'DELETE', 'POST', 'PUT',
+                          'PATCH', 'OPTIONS']
+
+        if fields and body:
+            raise ApiValueError(
+                "body parameter cannot be used with fields parameter."
+            )
+
+        fields = fields or {}
+        headers = headers or {}
+
+        if timeout:
+            if isinstance(timeout, (int, float)):  # noqa: E501,F821
+                timeout = urllib3.Timeout(total=timeout)
+            elif (isinstance(timeout, tuple) and
+                  len(timeout) == 2):
+                timeout = urllib3.Timeout(connect=timeout[0], read=timeout[1])
+
+        if 'Content-Type' not in headers:
+            headers['Content-Type'] = 'application/json'
+
+        try:
+            # For `POST`, `PUT`, `PATCH`, `OPTIONS`, `DELETE`
+            if method in ['POST', 'PUT', 'PATCH', 'OPTIONS', 'DELETE']:
+                if query_params:
+                    url += '?' + urlencode(query_params)
+                if headers['Content-Type'] == 'application/x-www-form-urlencoded':  # noqa: E501
+                    r = self.pool_manager.request(
+                        method, url,
+                        fields=fields,
+                        encode_multipart=False,
+                        preload_content=not stream,
+                        timeout=timeout,
+                        headers=headers)
+                elif headers['Content-Type'] == 'multipart/form-data':
+                    # must del headers['Content-Type'], or the correct
+                    # Content-Type which generated by urllib3 will be
+                    # overwritten.
+                    del headers['Content-Type']
+                    r = self.pool_manager.request(
+                        method, url,
+                        fields=fields,
+                        encode_multipart=True,
+                        preload_content=not stream,
+                        timeout=timeout,
+                        headers=headers)
+                # Pass a `string` parameter directly in the body to support
+                # other content types than Json when `body` argument is
+                # provided in serialized form
+                elif isinstance(body, str) or isinstance(body, bytes):
+                    request_body = body
+                    r = self.pool_manager.request(
+                        method, url,
+                        body=request_body,
+                        preload_content=not stream,
+                        timeout=timeout,
+                        headers=headers)
+                else:
+                    # Cannot generate the request from given parameters
+                    msg = """Cannot prepare a request message for provided
+                             arguments. Please check that your arguments match
+                             declared content type."""
+                    raise ApiException(status=0, reason=msg)
+            # For `GET`, `HEAD`
+            else:
+                r = self.pool_manager.request(method, url,
+                                              fields=query_params,
+                                              preload_content=not stream,
+                                              timeout=timeout,
+                                              headers=headers)
+        except urllib3.exceptions.SSLError as e:
+            msg = "{0}\n{1}".format(type(e).__name__, str(e))
+            raise ApiException(status=0, reason=msg)
+
+        if not stream:
+            # log response body
+            logger.debug("response body: %s", r.data)
+
+        return r
+
+    def GET(self, url, headers=None, query_params=None, stream=False,
+            timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("GET", url,
+                            headers=headers,
+                            stream=stream,
+                            timeout=timeout,
+                            query_params=query_params, fields=fields)
+
+    def HEAD(self, url, headers=None, query_params=None, stream=False,
+             timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("HEAD", url,
+                            headers=headers,
+                            stream=stream,
+                            timeout=timeout,
+                            query_params=query_params, fields=fields)
+
+    def OPTIONS(self, url, headers=None, query_params=None,
+                body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("OPTIONS", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def DELETE(self, url, headers=None, query_params=None, body=None,
+               stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("DELETE", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def POST(self, url, headers=None, query_params=None,
+             body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("POST", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def PUT(self, url, headers=None, query_params=None,
+            body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("PUT", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def PATCH(self, url, headers=None, query_params=None,
+              body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("PATCH", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/schema_doc.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/schema_doc.handlebars
new file mode 100644
index 00000000000..556d2cbb5f9
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/schema_doc.handlebars
@@ -0,0 +1,32 @@
+
+{{#if description}}
+{{&description}}
+
+{{/if}}
+{{#or vars additionalProperties}}
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+    {{#each vars}}
+**{{baseName}}** | {{#unless complexType}}**{{dataType}}**{{/unless}}{{#if complexType}}[**{{dataType}}**]({{complexType}}.md){{/if}} | {{description}} | {{#unless required}}[optional] {{/unless}}{{#if isReadOnly}}[readonly] {{/if}}{{#if defaultValue}} if omitted the server will use the default value of {{{defaultValue}}}{{/if}}
+    {{/each}}
+    {{#with additionalProperties}}
+**any string name** | **{{dataType}}** | any string name can be used but the value must be the correct type | [optional]
+    {{/with}}
+{{else}}
+Type | Description | Notes
+------------- | ------------- | -------------
+    {{#if isAnyType}}
+typing.Union[dict, frozendict, str, date, datetime, int, float, bool, Decimal, None, list, tuple, bytes] | |
+    {{else}}
+        {{#if hasMultipleTypes}}
+typing.Union[{{#if isMap}}dict, frozendict, {{/if}}{{#if isString}}str, {{/if}}{{#if isDate}}date, {{/if}}{{#if isDataTime}}datetime, {{/if}}{{#or isLong isShort isUnboundedInteger}}int, {{/or}}{{#or isFloat isDouble}}float, {{/or}}{{#if isNumber}}Decimal, {{/if}}{{#if isBoolean}}bool, {{/if}}{{#if isNull}}None, {{/if}}{{#if isArray}}list, tuple, {{/if}}{{#if isBinary}}bytes{{/if}}] | | {{#with allowableValues}}{{#if defaultValue}}, {{/if}} must be one of [{{#each enumVars}}{{{value}}}, {{/each}}]{{/with}}
+        {{else}}
+            {{#if isArray}}
+{{#unless arrayModelType}}**{{dataType}}**{{/unless}}{{#if arrayModelType}}[**{{dataType}}**]({{arrayModelType}}.md){{/if}} | {{description}} | {{#if defaultValue}}{{#if hasRequired}} if omitted the server will use the default value of {{/if}}{{#unless hasRequired}}defaults to {{/unless}}{{{defaultValue}}}{{/if}}
+            {{else}}
+{{#unless arrayModelType}}**{{dataType}}**{{/unless}} | {{description}} | {{#if defaultValue}}{{#if hasRequired}} if omitted the server will use the default value of {{/if}}{{#unless hasRequired}}defaults to {{/unless}}{{{defaultValue}}}{{/if}}{{#with allowableValues}}{{#if defaultValue}}, {{/if}} must be one of [{{#each enumVars}}{{{value}}}, {{/each}}]{{/with}}
+            {{/if}}
+        {{/if}}
+    {{/if}}
+{{/or}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/schemas.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/schemas.handlebars
new file mode 100644
index 00000000000..9450487cb54
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/schemas.handlebars
@@ -0,0 +1,2038 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+from collections import defaultdict
+from datetime import date, datetime, timedelta  # noqa: F401
+from dataclasses import dataclass
+import functools
+import decimal
+import io
+import os
+import re
+import tempfile
+import typing
+
+from dateutil.parser.isoparser import isoparser, _takes_ascii
+from frozendict import frozendict
+
+from {{packageName}}.exceptions import (
+    ApiTypeError,
+    ApiValueError,
+)
+from {{packageName}}.configuration import (
+    Configuration,
+)
+
+
+class Unset(object):
+    """
+    An instance of this class is set as the default value for object type(dict) properties that are optional
+    When a property has an unset value, that property will not be assigned in the dict
+    """
+    pass
+
+unset = Unset()
+
+none_type = type(None)
+file_type = io.IOBase
+
+
+class FileIO(io.FileIO):
+    """
+    A class for storing files
+    Note: this class is not immutable
+    """
+
+    def __new__(cls, arg: typing.Union[io.FileIO, io.BufferedReader]):
+        if isinstance(arg, (io.FileIO, io.BufferedReader)):
+            arg.close()
+            inst = super(FileIO, cls).__new__(cls, arg.name)
+            super(FileIO, inst).__init__(arg.name)
+            return inst
+        raise ApiValueError('FileIO must be passed arg which contains the open file')
+
+
+def update(d: dict, u: dict):
+    """
+    Adds u to d
+    Where each dict is defaultdict(set)
+    """
+    for k, v in u.items():
+        d[k] = d[k].union(v)
+    return d
+
+
+class InstantiationMetadata:
+    """
+    A class to store metadata that is needed when instantiating OpenApi Schema subclasses
+    """
+    def __init__(
+        self,
+        path_to_item: typing.Tuple[typing.Union[str, int], ...] = tuple(['args[0]']),
+        from_server: bool = False,
+        configuration: typing.Optional[Configuration] = None,
+        base_classes: typing.FrozenSet[typing.Type] = frozenset(),
+        path_to_schemas: typing.Optional[typing.Dict[str, typing.Set[typing.Type]]] = None,
+    ):
+        """
+        Args:
+            path_to_item: the path to the current data being instantiated.
+                For {'a': [1]} if the code is handling, 1, then the path is ('args[0]', 'a', 0)
+            from_server: whether or not this data came form the server
+                True when receiving server data
+                False when instantiating model with client side data not form the server
+            configuration: the Configuration instance to use
+                This is needed because in Configuration:
+                - one can disable validation checking
+            base_classes: when deserializing data that matches multiple schemas, this is used to store
+                the schemas that have been traversed. This is used to stop processing when a cycle is seen.
+            path_to_schemas: a dict that goes from path to a list of classes at each path location
+        """
+        self.path_to_item = path_to_item
+        self.from_server = from_server
+        self.configuration = configuration
+        self.base_classes = base_classes
+        if path_to_schemas is None:
+            path_to_schemas = defaultdict(set)
+        self.path_to_schemas = path_to_schemas
+
+    def __repr__(self):
+        return str(self.__dict__)
+
+    def __eq__(self, other):
+        if not isinstance(other, InstantiationMetadata):
+            return False
+        return self.__dict__ == other.__dict__
+
+
+class ValidatorBase:
+    @staticmethod
+    def __is_json_validation_enabled(schema_keyword, configuration=None):
+        """Returns true if JSON schema validation is enabled for the specified
+        validation keyword. This can be used to skip JSON schema structural validation
+        as requested in the configuration.
+
+        Args:
+            schema_keyword (string): the name of a JSON schema validation keyword.
+            configuration (Configuration): the configuration class.
+        """
+
+        return (configuration is None or
+            not hasattr(configuration, '_disabled_client_side_validations') or
+            schema_keyword not in configuration._disabled_client_side_validations)
+
+    @staticmethod
+    def __raise_validation_error_message(value, constraint_msg, constraint_value, path_to_item, additional_txt=""):
+        raise ApiValueError(
+            "Invalid value `{value}`, {constraint_msg} `{constraint_value}`{additional_txt} at {path_to_item}".format(
+                value=value,
+                constraint_msg=constraint_msg,
+                constraint_value=constraint_value,
+                additional_txt=additional_txt,
+                path_to_item=path_to_item,
+            )
+        )
+
+    @classmethod
+    def __check_str_validations(cls,
+            validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if (cls.__is_json_validation_enabled('maxLength', _instantiation_metadata.configuration) and
+                'max_length' in validations and
+                len(input_values) > validations['max_length']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="length must be less than or equal to",
+                constraint_value=validations['max_length'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minLength', _instantiation_metadata.configuration) and
+                'min_length' in validations and
+                len(input_values) < validations['min_length']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="length must be greater than or equal to",
+                constraint_value=validations['min_length'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        checked_value = input_values
+        if (cls.__is_json_validation_enabled('pattern', _instantiation_metadata.configuration) and
+                'regex' in validations):
+            for regex_dict in validations['regex']:
+                flags = regex_dict.get('flags', 0)
+                if not re.search(regex_dict['pattern'], checked_value, flags=flags):
+                    if flags != 0:
+                        # Don't print the regex flags if the flags are not
+                        # specified in the OAS document.
+                        cls.__raise_validation_error_message(
+                            value=input_values,
+                            constraint_msg="must match regular expression",
+                            constraint_value=regex_dict['pattern'],
+                            path_to_item=_instantiation_metadata.path_to_item,
+                            additional_txt=" with flags=`{}`".format(flags)
+                        )
+                    cls.__raise_validation_error_message(
+                        value=input_values,
+                        constraint_msg="must match regular expression",
+                        constraint_value=regex_dict['pattern'],
+                        path_to_item=_instantiation_metadata.path_to_item
+                    )
+
+    @classmethod
+    def __check_tuple_validations(
+            cls, validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if (cls.__is_json_validation_enabled('maxItems', _instantiation_metadata.configuration) and
+                'max_items' in validations and
+                len(input_values) > validations['max_items']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of items must be less than or equal to",
+                constraint_value=validations['max_items'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minItems', _instantiation_metadata.configuration) and
+                'min_items' in validations and
+                len(input_values) < validations['min_items']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of items must be greater than or equal to",
+                constraint_value=validations['min_items'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('uniqueItems', _instantiation_metadata.configuration) and
+                'unique_items' in validations and validations['unique_items'] and input_values):
+            unique_items = []
+            # print(validations)
+            for item in input_values:
+                if item not in unique_items:
+                    unique_items.append(item)
+            if len(input_values) > len(unique_items):
+                cls.__raise_validation_error_message(
+                    value=input_values,
+                    constraint_msg="duplicate items were found, and the tuple must not contain duplicates because",
+                    constraint_value='unique_items==True',
+                    path_to_item=_instantiation_metadata.path_to_item
+                )
+
+    @classmethod
+    def __check_dict_validations(
+            cls, validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if (cls.__is_json_validation_enabled('maxProperties', _instantiation_metadata.configuration) and
+                'max_properties' in validations and
+                len(input_values) > validations['max_properties']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of properties must be less than or equal to",
+                constraint_value=validations['max_properties'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minProperties', _instantiation_metadata.configuration) and
+                'min_properties' in validations and
+                len(input_values) < validations['min_properties']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of properties must be greater than or equal to",
+                constraint_value=validations['min_properties'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+    @classmethod
+    def __check_numeric_validations(
+            cls, validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if cls.__is_json_validation_enabled('multipleOf',
+                                      _instantiation_metadata.configuration) and 'multiple_of' in validations:
+            multiple_of_values = validations['multiple_of']
+            for multiple_of_value in multiple_of_values:
+                if (isinstance(input_values, decimal.Decimal) and
+                        not (float(input_values) / multiple_of_value).is_integer()
+                ):
+                    # Note 'multipleOf' will be as good as the floating point arithmetic.
+                    cls.__raise_validation_error_message(
+                        value=input_values,
+                        constraint_msg="value must be a multiple of",
+                        constraint_value=multiple_of_value,
+                        path_to_item=_instantiation_metadata.path_to_item
+                    )
+
+        checking_max_or_min_values = {'exclusive_maximum', 'inclusive_maximum', 'exclusive_minimum',
+                                      'inclusive_minimum'}.isdisjoint(validations) is False
+        if not checking_max_or_min_values:
+            return
+        max_val = input_values
+        min_val = input_values
+
+        if (cls.__is_json_validation_enabled('exclusiveMaximum', _instantiation_metadata.configuration) and
+                'exclusive_maximum' in validations and
+                max_val >= validations['exclusive_maximum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value less than",
+                constraint_value=validations['exclusive_maximum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('maximum', _instantiation_metadata.configuration) and
+                'inclusive_maximum' in validations and
+                max_val > validations['inclusive_maximum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value less than or equal to",
+                constraint_value=validations['inclusive_maximum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('exclusiveMinimum', _instantiation_metadata.configuration) and
+                'exclusive_minimum' in validations and
+                min_val <= validations['exclusive_minimum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value greater than",
+                constraint_value=validations['exclusive_maximum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minimum', _instantiation_metadata.configuration) and
+                'inclusive_minimum' in validations and
+                min_val < validations['inclusive_minimum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value greater than or equal to",
+                constraint_value=validations['inclusive_minimum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+    @classmethod
+    def _check_validations_for_types(
+            cls,
+            validations,
+            input_values,
+            _instantiation_metadata: InstantiationMetadata
+    ):
+        if isinstance(input_values, str):
+            cls.__check_str_validations(validations, input_values, _instantiation_metadata)
+        elif isinstance(input_values, tuple):
+            cls.__check_tuple_validations(validations, input_values, _instantiation_metadata)
+        elif isinstance(input_values, frozendict):
+            cls.__check_dict_validations(validations, input_values, _instantiation_metadata)
+        elif isinstance(input_values, decimal.Decimal):
+            cls.__check_numeric_validations(validations, input_values, _instantiation_metadata)
+        try:
+            return super()._validate_validations_pass(input_values, _instantiation_metadata)
+        except AttributeError:
+            return True
+
+
+class Validator(typing.Protocol):
+    def _validate_validations_pass(
+        cls,
+        input_values,
+        _instantiation_metadata: InstantiationMetadata
+    ):
+        pass
+
+
+def _SchemaValidator(**validations: typing.Union[str, bool, None, int, float, list[dict[str, typing.Union[str, int, float]]]]) -> Validator:
+    class SchemaValidator(ValidatorBase):
+        @classmethod
+        def _validate_validations_pass(
+                cls,
+                input_values,
+                _instantiation_metadata: InstantiationMetadata
+        ):
+            cls._check_validations_for_types(validations, input_values, _instantiation_metadata)
+            try:
+                return super()._validate_validations_pass(input_values, _instantiation_metadata)
+            except AttributeError:
+                return True
+
+    return SchemaValidator
+
+
+class TypeChecker(typing.Protocol):
+    @classmethod
+    def _validate_type(
+        cls, arg_simple_class: type
+    ) -> typing.Tuple[type]:
+        pass
+
+
+def _SchemaTypeChecker(union_type_cls: typing.Union[typing.Any]) -> TypeChecker:
+    if typing.get_origin(union_type_cls) is typing.Union:
+        union_classes = typing.get_args(union_type_cls)
+    else:
+        # note: when a union of a single class is passed in, the union disappears
+        union_classes = tuple([union_type_cls])
+    """
+    I want the type hint... union_type_cls
+    and to use it as a base class but when I do, I get
+    TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases
+    """
+    class SchemaTypeChecker:
+        @classmethod
+        def _validate_type(cls, arg_simple_class: type):
+            if arg_simple_class not in union_classes:
+                return union_classes
+            try:
+                return super()._validate_type(arg_simple_class)
+            except AttributeError:
+                return tuple()
+
+    return SchemaTypeChecker
+
+
+class EnumMakerBase:
+    @classmethod
+    @property
+    def _enum_by_value(
+        cls
+    ) -> type:
+        enum_classes = {}
+        if not hasattr(cls, "_enum_value_to_name"):
+            return enum_classes
+        for enum_value, enum_name in cls._enum_value_to_name.items():
+            base_class = type(enum_value)
+            if base_class is none_type:
+                enum_classes[enum_value] = get_new_class(
+                      "Dynamic" + cls.__name__, (cls, NoneClass))
+                log_cache_usage(get_new_class)
+            elif base_class is bool:
+                enum_classes[enum_value] = get_new_class(
+                      "Dynamic" + cls.__name__, (cls, BoolClass))
+                log_cache_usage(get_new_class)
+            else:
+                enum_classes[enum_value] = get_new_class(
+                    "Dynamic" + cls.__name__, (cls, Singleton, base_class))
+                log_cache_usage(get_new_class)
+        return enum_classes
+
+
+class EnumMakerInterface(typing.Protocol):
+    @classmethod
+    @property
+    def _enum_value_to_name(
+        cls
+    ) -> typing.Dict[typing.Union[str, decimal.Decimal, bool, none_type], str]:
+        pass
+
+    @classmethod
+    @property
+    def _enum_by_value(
+        cls
+    ) -> type:
+        pass
+
+
+def _SchemaEnumMaker(enum_value_to_name: typing.Dict[typing.Union[str, decimal.Decimal, bool, none_type], str]) -> EnumMakerInterface:
+    class SchemaEnumMaker(EnumMakerBase):
+        @classmethod
+        @property
+        def _enum_value_to_name(
+                cls
+        ) -> typing.Dict[typing.Union[str, decimal.Decimal, bool, none_type], str]:
+            pass
+            try:
+                super_enum_value_to_name = super()._enum_value_to_name
+            except AttributeError:
+                return enum_value_to_name
+            intersection = dict(enum_value_to_name.items() & super_enum_value_to_name.items())
+            return intersection
+
+    return SchemaEnumMaker
+
+
+class Singleton:
+    """
+    Enums and singletons are the same
+    The same instance is returned for a given key of (cls, arg)
+    """
+    # TODO use bidict to store this so boolean enums can move through it in reverse to get their own arg value?
+    _instances = {}
+
+    def __new__(cls, *args, **kwargs):
+        if not args:
+            raise ValueError('arg must be passed')
+        arg = args[0]
+        key = (cls, arg)
+        if key not in cls._instances:
+            if arg in {None, True, False}:
+                inst = super().__new__(cls)
+                # inst._value = arg
+                cls._instances[key] = inst
+            else:
+                cls._instances[key] = super().__new__(cls, arg)
+        return cls._instances[key]
+
+    def __repr__(self):
+        return '({}, {})'.format(self.__class__.__name__, self)
+
+
+class NoneClass(Singleton):
+    @classmethod
+    @property
+    def NONE(cls):
+        return cls(None)
+
+    def is_none(self) -> bool:
+        return True
+
+    def __bool__(self) -> bool:
+        return False
+
+
+class BoolClass(Singleton):
+    @classmethod
+    @property
+    def TRUE(cls):
+        return cls(True)
+
+    @classmethod
+    @property
+    def FALSE(cls):
+        return cls(False)
+
+    @functools.cache
+    def __bool__(self) -> bool:
+        for key, instance in self._instances.items():
+            if self is instance:
+                return key[1]
+        raise ValueError('Unable to find the boolean value of this instance')
+
+    def is_true(self):
+        return bool(self)
+
+    def is_false(self):
+        return bool(self)
+
+
+class BoolBase:
+    pass
+
+
+class NoneBase:
+    pass
+
+
+class StrBase:
+    @property
+    def as_str(self) -> str:
+        return self
+
+    @property
+    def as_date(self) -> date:
+        raise Exception('not implemented')
+
+    @property
+    def as_datetime(self) -> datetime:
+        raise Exception('not implemented')
+
+    @property
+    def as_decimal(self) -> decimal.Decimal:
+        raise Exception('not implemented')
+
+
+class CustomIsoparser(isoparser):
+
+    @_takes_ascii
+    def parse_isodatetime(self, dt_str):
+        components, pos = self._parse_isodate(dt_str)
+        if len(dt_str) > pos:
+            if self._sep is None or dt_str[pos:pos + 1] == self._sep:
+                components += self._parse_isotime(dt_str[pos + 1:])
+            else:
+                raise ValueError('String contains unknown ISO components')
+
+        if len(components) > 3 and components[3] == 24:
+            components[3] = 0
+            return datetime(*components) + timedelta(days=1)
+
+        if len(components) <= 3:
+            raise ValueError('Value is not a datetime')
+
+        return datetime(*components)
+
+    @_takes_ascii
+    def parse_isodate(self, datestr):
+        components, pos = self._parse_isodate(datestr)
+
+        if len(datestr) > pos:
+            raise ValueError('String contains invalid time components')
+
+        if len(components) > 3:
+            raise ValueError('String contains invalid time components')
+
+        return date(*components)
+
+
+DEFAULT_ISOPARSER = CustomIsoparser()
+
+
+class DateBase(StrBase):
+    @property
+    @functools.cache
+    def as_date(self) -> date:
+        return DEFAULT_ISOPARSER.parse_isodate(self)
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[str], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, str):
+            try:
+                DEFAULT_ISOPARSER.parse_isodate(arg)
+                return True
+            except ValueError:
+                raise ApiValueError(
+                    "Value does not conform to the required ISO-8601 date format. "
+                    "Invalid value '{}' for type date at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DateBase _validate
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class DateTimeBase:
+    @property
+    @functools.cache
+    def as_datetime(self) -> datetime:
+        return DEFAULT_ISOPARSER.parse_isodatetime(self)
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[str], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, str):
+            try:
+                DEFAULT_ISOPARSER.parse_isodatetime(arg)
+                return True
+            except ValueError:
+                raise ApiValueError(
+                    "Value does not conform to the required ISO-8601 datetime format. "
+                    "Invalid value '{}' for type datetime at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DateTimeBase _validate
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class DecimalBase(StrBase):
+    """
+    A class for storing decimals that are sent over the wire as strings
+    These schemas must remain based on StrBase rather than NumberBase
+    because picking base classes must be deterministic
+    """
+
+    @property
+    @functools.cache
+    def as_decimal(self) -> decimal.Decimal:
+        return decimal.Decimal(self)
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[str], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, str):
+            try:
+                decimal.Decimal(arg)
+                return True
+            except decimal.InvalidOperation:
+                raise ApiValueError(
+                    "Value cannot be converted to a decimal. "
+                    "Invalid value '{}' for type decimal at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DecimalBase _validate
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class NumberBase:
+    @property
+    def as_int(self) -> int:
+        try:
+            return self._as_int
+        except AttributeError:
+            """
+            Note: for some numbers like 9.0 they could be represented as an
+            integer but our code chooses to store them as
+            >>> Decimal('9.0').as_tuple()
+            DecimalTuple(sign=0, digits=(9, 0), exponent=-1)
+            so we can tell that the value came from a float and convert it back to a float
+            during later serialization
+            """
+            if self.as_tuple().exponent < 0:
+                # this could be represented as an integer but should be represented as a float
+                # because that's what it was serialized from
+                raise ApiValueError(f'{self} is not an integer')
+            self._as_int = int(self)
+            return self._as_int
+
+    @property
+    def as_float(self) -> float:
+        try:
+            return self._as_float
+        except AttributeError:
+            if self.as_tuple().exponent >= 0:
+                raise ApiValueError(f'{self} is not an float')
+            self._as_float = float(self)
+            return self._as_float
+
+
+class ListBase:
+    @classmethod
+    def _validate_items(cls, list_items, _instantiation_metadata: InstantiationMetadata):
+        """
+        Ensures that:
+        - values passed in for items are valid
+        Exceptions will be raised if:
+        - invalid arguments were passed in
+
+        Args:
+            list_items: the input list of items
+
+        Raises:
+            ApiTypeError - for missing required arguments, or for invalid properties
+        """
+
+        # if we have definitions for an items schema, use it
+        # otherwise accept anything
+        item_cls = getattr(cls, '_items', AnyTypeSchema)
+        path_to_schemas = defaultdict(set)
+        for i, value in enumerate(list_items):
+            if isinstance(value, item_cls):
+                continue
+            item_instantiation_metadata = InstantiationMetadata(
+                from_server=_instantiation_metadata.from_server,
+                configuration=_instantiation_metadata.configuration,
+                path_to_item=_instantiation_metadata.path_to_item+(i,)
+            )
+            other_path_to_schemas = item_cls._validate(
+                value, _instantiation_metadata=item_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+        return path_to_schemas
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        ListBase _validate
+        We return dynamic classes of different bases depending upon the inputs
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Returns:
+            new_cls (type): the new class
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        arg = args[0]
+        _path_to_schemas = super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+        if not isinstance(arg, tuple):
+            return _path_to_schemas
+        if cls in _instantiation_metadata.base_classes:
+            # we have already moved through this class so stop here
+            return _path_to_schemas
+        _instantiation_metadata.base_classes |= frozenset({cls})
+        other_path_to_schemas = cls._validate_items(arg, _instantiation_metadata=_instantiation_metadata)
+        update(_path_to_schemas, other_path_to_schemas)
+        return _path_to_schemas
+
+    @classmethod
+    def _get_items(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        '''
+        ListBase _get_items
+        '''
+        _instantiation_metadata = InstantiationMetadata() if _instantiation_metadata is None else _instantiation_metadata
+
+        list_items = args[0]
+        cast_items = []
+        # if we have definitions for an items schema, use it
+        # otherwise accept anything
+
+        cls_item_cls = getattr(cls, '_items', AnyTypeSchema)
+        for i, value in enumerate(list_items):
+            item_path_to_item = _instantiation_metadata.path_to_item+(i,)
+            if item_path_to_item in _instantiation_metadata.path_to_schemas:
+                item_cls = _instantiation_metadata.path_to_schemas[item_path_to_item]
+            else:
+                item_cls = cls_item_cls
+
+            if isinstance(value, item_cls):
+                cast_items.append(value)
+                continue
+            item_instantiation_metadata = InstantiationMetadata(
+                configuration=_instantiation_metadata.configuration,
+                from_server=_instantiation_metadata.from_server,
+                path_to_item=item_path_to_item,
+                path_to_schemas=_instantiation_metadata.path_to_schemas,
+            )
+
+            if _instantiation_metadata.from_server:
+                new_value = item_cls._from_openapi_data(value, _instantiation_metadata=item_instantiation_metadata)
+            else:
+                new_value = item_cls(value, _instantiation_metadata=item_instantiation_metadata)
+            cast_items.append(new_value)
+
+        return cast_items
+
+
+class Discriminable:
+    @classmethod
+    def _ensure_discriminator_value_present(cls, disc_property_name: str, _instantiation_metadata: InstantiationMetadata, *args):
+        if not args or args and disc_property_name not in args[0]:
+            # The input data does not contain the discriminator property
+            raise ApiValueError(
+                "Cannot deserialize input data due to missing discriminator. "
+                "The discriminator property '{}' is missing at path: {}".format(disc_property_name, _instantiation_metadata.path_to_item)
+            )
+
+    @classmethod
+    def _get_discriminated_class(cls, disc_property_name: str, disc_payload_value: str):
+        """
+        Used in schemas with discriminators
+        """
+        if not hasattr(cls, '_discriminator'):
+            return None
+        disc = cls._discriminator
+        if disc_property_name not in disc:
+            return None
+        discriminated_cls = disc[disc_property_name].get(disc_payload_value)
+        if discriminated_cls is not None:
+            return discriminated_cls
+        elif not hasattr(cls, '_composed_schemas'):
+            return None
+        # TODO stop traveling if a cycle is hit
+        for allof_cls in cls._composed_schemas['allOf']:
+            discriminated_cls = allof_cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=disc_payload_value)
+            if discriminated_cls is not None:
+                return discriminated_cls
+        for oneof_cls in cls._composed_schemas['oneOf']:
+            discriminated_cls = oneof_cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=disc_payload_value)
+            if discriminated_cls is not None:
+                return discriminated_cls
+        for anyof_cls in cls._composed_schemas['anyOf']:
+            discriminated_cls = anyof_cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=disc_payload_value)
+            if discriminated_cls is not None:
+                return discriminated_cls
+        return None
+
+
+class DictBase(Discriminable):
+    # subclass properties
+    _required_property_names = set()
+
+    @classmethod
+    def _validate_arg_presence(cls, arg):
+        """
+        Ensures that:
+        - all required arguments are passed in
+        - the input variable names are valid
+            - present in properties or
+            - accepted because additionalProperties exists
+        Exceptions will be raised if:
+        - invalid arguments were passed in
+            - a var_name is invalid if additionProperties == None and var_name not in _properties
+        - required properties were not passed in
+
+        Args:
+            arg: the input dict
+
+        Raises:
+            ApiTypeError - for missing required arguments, or for invalid properties
+        """
+        seen_required_properties = set()
+        invalid_arguments = []
+        for property_name in arg:
+            if property_name in cls._required_property_names:
+                seen_required_properties.add(property_name)
+            elif property_name in cls._property_names:
+                continue
+            elif cls._additional_properties:
+                continue
+            else:
+                invalid_arguments.append(property_name)
+        missing_required_arguments = list(cls._required_property_names - seen_required_properties)
+        if missing_required_arguments:
+            missing_required_arguments.sort()
+            raise ApiTypeError(
+                "{} is missing {} required argument{}: {}".format(
+                    cls.__name__,
+                    len(missing_required_arguments),
+                    "s" if len(missing_required_arguments) > 1 else "",
+                    missing_required_arguments
+                )
+            )
+        if invalid_arguments:
+            invalid_arguments.sort()
+            raise ApiTypeError(
+                "{} was passed {} invalid argument{}: {}".format(
+                    cls.__name__,
+                    len(invalid_arguments),
+                    "s" if len(invalid_arguments) > 1 else "",
+                    invalid_arguments
+                )
+            )
+
+    @classmethod
+    def _validate_args(cls, arg, _instantiation_metadata: InstantiationMetadata):
+        """
+        Ensures that:
+        - values passed in for properties are valid
+        Exceptions will be raised if:
+        - invalid arguments were passed in
+
+        Args:
+            arg: the input dict
+
+        Raises:
+            ApiTypeError - for missing required arguments, or for invalid properties
+        """
+        path_to_schemas = defaultdict(set)
+        for property_name, value in arg.items():
+            if property_name in cls._required_property_names or property_name in cls._property_names:
+                schema = getattr(cls, property_name)
+            elif cls._additional_properties:
+                schema = cls._additional_properties
+            else:
+                raise ApiTypeError('Unable to find schema for value={} in class={} at path_to_item={}'.format(
+                    value, cls, _instantiation_metadata.path_to_item+(property_name,)
+                ))
+            if isinstance(value, schema):
+                continue
+            arg_instantiation_metadata = InstantiationMetadata(
+                from_server=_instantiation_metadata.from_server,
+                configuration=_instantiation_metadata.configuration,
+                path_to_item=_instantiation_metadata.path_to_item+(property_name,)
+            )
+            other_path_to_schemas = schema._validate(value, _instantiation_metadata=arg_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+            _instantiation_metadata.path_to_schemas.update(arg_instantiation_metadata.path_to_schemas)
+        return path_to_schemas
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DictBase _validate
+        We return dynamic classes of different bases depending upon the inputs
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Returns:
+            new_cls (type): the new class
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        if args and isinstance(args[0], cls):
+            # an instance of the correct type was passed in
+            return {}
+        arg = args[0]
+        _path_to_schemas = super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+        if not isinstance(arg, frozendict):
+            return _path_to_schemas
+        cls._validate_arg_presence(args[0])
+        other_path_to_schemas = cls._validate_args(args[0], _instantiation_metadata=_instantiation_metadata)
+        update(_path_to_schemas, other_path_to_schemas)
+        try:
+            _discriminator = cls._discriminator
+        except AttributeError:
+            return _path_to_schemas
+        # discriminator exists
+        disc_prop_name = list(_discriminator.keys())[0]
+        cls._ensure_discriminator_value_present(disc_prop_name, _instantiation_metadata, *args)
+        discriminated_cls = cls._get_discriminated_class(
+            disc_property_name=disc_prop_name, disc_payload_value=arg[disc_prop_name])
+        if discriminated_cls is None:
+            raise ApiValueError(
+                "Invalid discriminator value was passed in to {}.{} Only the values {} are allowed at {}".format(
+                    cls.__name__,
+                    disc_prop_name,
+                    list(_discriminator[disc_prop_name].keys()),
+                    _instantiation_metadata.path_to_item + (disc_prop_name,)
+                )
+            )
+        if discriminated_cls in _instantiation_metadata.base_classes:
+            # we have already moved through this class so stop here
+            return _path_to_schemas
+        _instantiation_metadata.base_classes |= frozenset({cls})
+        other_path_to_schemas = discriminated_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+        update(_path_to_schemas, other_path_to_schemas)
+        return _path_to_schemas
+
+    @classmethod
+    @property
+    def _additional_properties(cls):
+        return AnyTypeSchema
+
+    @classmethod
+    @property
+    @functools.cache
+    def _property_names(cls):
+        property_names = set()
+        for var_name, var_value in cls.__dict__.items():
+            # referenced models are classmethods
+            is_classmethod = type(var_value) is classmethod
+            if is_classmethod:
+                property_names.add(var_name)
+                continue
+            is_class = type(var_value) is type
+            if not is_class:
+                continue
+            if not issubclass(var_value, Schema):
+                continue
+            if var_name == '_additional_properties':
+                continue
+            property_names.add(var_name)
+        property_names = list(property_names)
+        property_names.sort()
+        return tuple(property_names)
+
+    @classmethod
+    def _get_properties(cls, arg: typing.Dict[str, typing.Any], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DictBase _get_properties, this is how properties are set
+        These values already passed validation
+        """
+        dict_items = {}
+        # if we have definitions for property schemas convert values using it
+        # otherwise accept anything
+
+        _instantiation_metadata = InstantiationMetadata() if _instantiation_metadata is None else _instantiation_metadata
+
+        for property_name_js, value in arg.items():
+            property_cls = getattr(cls, property_name_js, cls._additional_properties)
+            property_path_to_item = _instantiation_metadata.path_to_item+(property_name_js,)
+            stored_property_cls = _instantiation_metadata.path_to_schemas.get(property_path_to_item)
+            if stored_property_cls:
+                property_cls = stored_property_cls
+
+            if isinstance(value, property_cls):
+                dict_items[property_name_js] = value
+                continue
+
+            prop_instantiation_metadata = InstantiationMetadata(
+                configuration=_instantiation_metadata.configuration,
+                from_server=_instantiation_metadata.from_server,
+                path_to_item=property_path_to_item,
+                path_to_schemas=_instantiation_metadata.path_to_schemas,
+            )
+            if _instantiation_metadata.from_server:
+                new_value = property_cls._from_openapi_data(value, _instantiation_metadata=prop_instantiation_metadata)
+            else:
+                new_value = property_cls(value, _instantiation_metadata=prop_instantiation_metadata)
+            dict_items[property_name_js] = new_value
+        return dict_items
+
+    def __setattr__(self, name, value):
+        if not isinstance(self, FileIO):
+            raise AttributeError('property setting not supported on immutable instances')
+
+    def __getattr__(self, name):
+        if isinstance(self, frozendict):
+            # if an attribute does not exist
+            try:
+                return self[name]
+            except KeyError as ex:
+                raise AttributeError(str(ex))
+        # print(('non-frozendict __getattr__', name))
+        return super().__getattr__(self, name)
+
+    def __getattribute__(self, name):
+        # print(('__getattribute__', name))
+        # if an attribute does exist (for example as a class property but not as an instance method)
+        try:
+            return self[name]
+        except (KeyError, TypeError):
+            return super().__getattribute__(name)
+
+
+inheritable_primitive_types_set = {decimal.Decimal, str, tuple, frozendict, FileIO, bytes}
+
+
+class Schema:
+    """
+    the base class of all swagger/openapi schemas/models
+
+    ensures that:
+    - payload passes required validations
+    - payload is of allowed types
+    - payload value is an allowed enum value
+    """
+
+    @staticmethod
+    def __get_simple_class(input_value):
+        """Returns an input_value's simple class that we will use for type checking
+
+        Args:
+            input_value (class/class_instance): the item for which we will return
+                                                the simple class
+        """
+        if isinstance(input_value, tuple):
+            return tuple
+        elif isinstance(input_value, frozendict):
+            return frozendict
+        elif isinstance(input_value, none_type):
+            return none_type
+        elif isinstance(input_value, bytes):
+            return bytes
+        elif isinstance(input_value, (io.FileIO, io.BufferedReader)):
+            return FileIO
+        elif isinstance(input_value, bool):
+            # this must be higher than the int check because
+            # isinstance(True, int) == True
+            return bool
+        elif isinstance(input_value, int):
+            return int
+        elif isinstance(input_value, float):
+            return float
+        elif isinstance(input_value, datetime):
+            # this must be higher than the date check because
+            # isinstance(datetime_instance, date) == True
+            return datetime
+        elif isinstance(input_value, date):
+            return date
+        elif isinstance(input_value, str):
+            return str
+        return type(input_value)
+
+    @staticmethod
+    def __get_valid_classes_phrase(input_classes):
+        """Returns a string phrase describing what types are allowed"""
+        all_classes = list(input_classes)
+        all_classes = sorted(all_classes, key=lambda cls: cls.__name__)
+        all_class_names = [cls.__name__ for cls in all_classes]
+        if len(all_class_names) == 1:
+            return "is {0}".format(all_class_names[0])
+        return "is one of [{0}]".format(", ".join(all_class_names))
+
+    @classmethod
+    def __type_error_message(
+        cls, var_value=None, var_name=None, valid_classes=None, key_type=None
+    ):
+        """
+        Keyword Args:
+            var_value (any): the variable which has the type_error
+            var_name (str): the name of the variable which has the typ error
+            valid_classes (tuple): the accepted classes for current_item's
+                                      value
+            key_type (bool): False if our value is a value in a dict
+                             True if it is a key in a dict
+                             False if our item is an item in a tuple
+        """
+        key_or_value = "value"
+        if key_type:
+            key_or_value = "key"
+        valid_classes_phrase = cls.__get_valid_classes_phrase(valid_classes)
+        msg = "Invalid type. Required {1} type {2} and " "passed type was {3}".format(
+            var_name,
+            key_or_value,
+            valid_classes_phrase,
+            type(var_value).__name__,
+        )
+        return msg
+
+    @classmethod
+    def __get_type_error(cls, var_value, path_to_item, valid_classes, key_type=False):
+        error_msg = cls.__type_error_message(
+            var_name=path_to_item[-1],
+            var_value=var_value,
+            valid_classes=valid_classes,
+            key_type=key_type,
+        )
+        return ApiTypeError(
+            error_msg,
+            path_to_item=path_to_item,
+            valid_classes=valid_classes,
+            key_type=key_type,
+        )
+
+    @classmethod
+    def _class_by_base_class(cls, base_cls: type) -> type:
+        cls_name = "Dynamic"+cls.__name__
+        if base_cls is bool:
+            new_cls = get_new_class(cls_name, (cls, BoolBase, BoolClass))
+        elif base_cls is str:
+            new_cls = get_new_class(cls_name, (cls, StrBase, str))
+        elif base_cls is decimal.Decimal:
+            new_cls = get_new_class(cls_name, (cls, NumberBase, decimal.Decimal))
+        elif base_cls is tuple:
+            new_cls =  get_new_class(cls_name, (cls, ListBase, tuple))
+        elif base_cls is frozendict:
+            new_cls = get_new_class(cls_name, (cls, DictBase, frozendict))
+        elif base_cls is none_type:
+            new_cls = get_new_class(cls_name, (cls, NoneBase, NoneClass))
+        log_cache_usage(get_new_class)
+        return new_cls
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        Schema _validate
+        Runs all schema validation logic and
+        returns a dynamic class of different bases depending upon the input
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Use cases:
+        1. inheritable type: string/decimal.Decimal/frozendict/tuple
+        2. enum value cases: 'hi', 1 -> no base_class set because the enum includes the base class
+        3. uninheritable type: True/False/None -> no base_class because the base class is not inheritable
+            _enum_by_value will handle this use case
+
+        Required Steps:
+        1. verify type of input is valid vs the allowed _types
+        2. check validations that are applicable for this type of input
+        3. if enums exist, check that the value exists in the enum
+
+        Returns:
+            path_to_schemas: a map of path to schemas
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        arg = args[0]
+
+        base_class = cls.__get_simple_class(arg)
+        failed_type_check_classes = cls._validate_type(base_class)
+        if failed_type_check_classes:
+            raise cls.__get_type_error(
+                arg,
+                _instantiation_metadata.path_to_item,
+                failed_type_check_classes,
+                key_type=False,
+            )
+        if hasattr(cls, '_validate_validations_pass'):
+            cls._validate_validations_pass(arg, _instantiation_metadata)
+        path_to_schemas = defaultdict(set)
+        path_to_schemas[_instantiation_metadata.path_to_item].add(cls)
+
+        if hasattr(cls, "_enum_by_value"):
+            cls._validate_enum_value(arg)
+            return path_to_schemas
+
+        if base_class is none_type or base_class is bool:
+            return path_to_schemas
+
+        path_to_schemas[_instantiation_metadata.path_to_item].add(base_class)
+        return path_to_schemas
+
+    @classmethod
+    def _validate_enum_value(cls, arg):
+        try:
+            cls._enum_by_value[arg]
+        except KeyError:
+            raise ApiValueError("Invalid value {} passed in to {}, {}".format(arg, cls, cls._enum_value_to_name))
+
+    @classmethod
+    def __get_new_cls(cls, arg, _instantiation_metadata: InstantiationMetadata):
+        """
+        PATH 1 - make a new dynamic class and return an instance of that class
+        We are making an instance of cls, but instead of making cls
+        make a new class, new_cls
+        which includes dynamic bases including cls
+        return an instance of that new class
+        """
+        if (
+        _instantiation_metadata.path_to_schemas and
+        _instantiation_metadata.path_to_item in _instantiation_metadata.path_to_schemas):
+            chosen_new_cls = _instantiation_metadata.path_to_schemas[_instantiation_metadata.path_to_item]
+            # print('leaving __get_new_cls early for cls {} because path_to_schemas exists'.format(cls))
+            # print(_instantiation_metadata.path_to_item)
+            # print(chosen_new_cls)
+            return chosen_new_cls
+        """
+        Dict property + List Item Assignment Use cases:
+        1. value is NOT an instance of the required schema class
+            the value is validated by _validate
+            _validate returns a key value pair
+            where the key is the path to the item, and the value will be the required manufactured class
+            made out of the matching schemas
+        2. value is an instance of the the correct schema type
+            the value is NOT validated by _validate, _validate only checks that the instance is of the correct schema type
+            for this value, _validate does NOT return an entry for it in _path_to_schemas
+            and in list/dict _get_items,_get_properties the value will be directly assigned
+            because value is of the correct type, and validation was run earlier when the instance was created
+        """
+        _path_to_schemas = cls._validate(arg, _instantiation_metadata=_instantiation_metadata)
+        from pprint import pprint
+        pprint(dict(_path_to_schemas))
+        # loop through it make a new class for each entry
+        for path, schema_classes in _path_to_schemas.items():
+            enum_schema = any(
+                hasattr(this_cls, '_enum_by_value') for this_cls in schema_classes)
+            inheritable_primitive_type = schema_classes.intersection(inheritable_primitive_types_set)
+            chosen_schema_classes = schema_classes
+            suffix = tuple()
+            if inheritable_primitive_type:
+                chosen_schema_classes = schema_classes - inheritable_primitive_types_set
+                if not enum_schema:
+                    # include the inheritable_primitive_type
+                    suffix = tuple(inheritable_primitive_type)
+
+            if len(chosen_schema_classes) == 1 and not suffix:
+                mfg_cls = tuple(chosen_schema_classes)[0]
+            else:
+                x_schema = schema_descendents & chosen_schema_classes
+                if x_schema:
+                    x_schema = x_schema.pop()
+                    if any(c is not x_schema and issubclass(c, x_schema) for c in chosen_schema_classes):
+                        # needed to not have a mro error in get_new_class
+                        chosen_schema_classes.remove(x_schema)
+                used_classes = tuple(sorted(chosen_schema_classes, key=lambda a_cls: a_cls.__name__)) + suffix
+                mfg_cls = get_new_class(class_name='DynamicSchema', bases=used_classes)
+
+            if inheritable_primitive_type and not enum_schema:
+                _instantiation_metadata.path_to_schemas[path] = mfg_cls
+                continue
+
+            # Use case: value is None, True, False, or an enum value
+            # print('choosing enum class for path {} in arg {}'.format(path, arg))
+            value = arg
+            for key in path[1:]:
+                value = value[key]
+            if hasattr(mfg_cls, '_enum_by_value'):
+                mfg_cls = mfg_cls._enum_by_value[value]
+            elif value in {True, False}:
+                mfg_cls = mfg_cls._class_by_base_class(bool)
+            elif value is None:
+                mfg_cls = mfg_cls._class_by_base_class(none_type)
+            else:
+                raise ApiValueError('Unhandled case value={} bases={}'.format(value, mfg_cls.__bases__))
+            _instantiation_metadata.path_to_schemas[path] = mfg_cls
+
+        return _instantiation_metadata.path_to_schemas[_instantiation_metadata.path_to_item]
+
+    @classmethod
+    def __get_new_instance_without_conversion(cls, arg, _instantiation_metadata):
+        # PATH 2 - we have a Dynamic class and we are making an instance of it
+        if issubclass(cls, tuple):
+            items = cls._get_items(arg, _instantiation_metadata=_instantiation_metadata)
+            return super(Schema, cls).__new__(cls, items)
+        elif issubclass(cls, frozendict):
+            properties = cls._get_properties(arg, _instantiation_metadata=_instantiation_metadata)
+            return super(Schema, cls).__new__(cls, properties)
+        """
+        str = openapi str, date, and datetime
+        decimal.Decimal = openapi int and float
+        FileIO = openapi binary type and the user inputs a file
+        bytes = openapi binary type and the user inputs bytes
+        """
+        return super(Schema, cls).__new__(cls, arg)
+
+    @classmethod
+    def _from_openapi_data(
+        cls,
+        arg: typing.Union[
+            str,
+            date,
+            datetime,
+            int,
+            float,
+            decimal.Decimal,
+            bool,
+            None,
+            'Schema',
+            dict,
+            frozendict,
+            tuple,
+            list,
+            io.FileIO,
+            io.BufferedReader,
+            bytes
+        ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata]
+    ):
+        arg = cast_to_allowed_types(arg, from_server=True)
+        _instantiation_metadata = InstantiationMetadata(from_server=True) if _instantiation_metadata is None else _instantiation_metadata
+        if not _instantiation_metadata.from_server:
+            raise ApiValueError(
+                'from_server must be True in this code path, if you need it to be False, use cls()'
+            )
+        new_cls = cls.__get_new_cls(arg, _instantiation_metadata)
+        new_inst = new_cls.__get_new_instance_without_conversion(arg, _instantiation_metadata)
+        return new_inst
+
+    @staticmethod
+    def __get_input_dict(*args, **kwargs) -> frozendict:
+        input_dict = {}
+        if args and isinstance(args[0], (dict, frozendict)):
+            input_dict.update(args[0])
+        if kwargs:
+            input_dict.update(kwargs)
+        return frozendict(input_dict)
+
+    @staticmethod
+    def __remove_unsets(kwargs):
+        return {key: val for key, val in kwargs.items() if val is not unset}
+
+    def __new__(cls, *args: typing.Union[dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema'], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None, **kwargs: typing.Union[dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema', Unset]):
+        """
+        Schema __new__
+
+        Args:
+            args (int/float/decimal.Decimal/str/list/tuple/dict/frozendict/bool/None): the value
+            kwargs (str, int/float/decimal.Decimal/str/list/tuple/dict/frozendict/bool/None): dict values
+            _instantiation_metadata: contains the needed from_server, configuration, path_to_item
+        """
+        kwargs = cls.__remove_unsets(kwargs)
+        if not args and not kwargs:
+            raise TypeError(
+                'No input given. args or kwargs must be given.'
+            )
+        if not kwargs and args and not isinstance(args[0], dict):
+            arg = args[0]
+        else:
+            arg = cls.__get_input_dict(*args, **kwargs)
+        _instantiation_metadata = InstantiationMetadata() if _instantiation_metadata is None else _instantiation_metadata
+        if _instantiation_metadata.from_server:
+            raise ApiValueError(
+                'from_server must be False in this code path, if you need it to be True, use cls._from_openapi_data()'
+            )
+        arg = cast_to_allowed_types(arg, from_server=_instantiation_metadata.from_server)
+        new_cls = cls.__get_new_cls(arg, _instantiation_metadata)
+        return new_cls.__get_new_instance_without_conversion(arg, _instantiation_metadata)
+
+    def __init__(
+        self,
+        *args: typing.Union[
+            dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema'],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Union[
+            dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema', Unset
+        ]
+    ):
+        """
+        this is needed to fix 'Unexpected argument' warning in pycharm
+        this code does nothing because all Schema instances are immutable
+        this means that all input data is passed into and used in new, and after the new instance is made
+        no new attributes are assigned and init is not used
+        """
+        pass
+
+
+def cast_to_allowed_types(arg: typing.Union[str, date, datetime, decimal.Decimal, int, float, None, dict, frozendict, list, tuple, bytes, Schema], from_server=False) -> typing.Union[str, bytes, decimal.Decimal, None, frozendict, tuple, Schema]:
+    """
+    from_server=False date, datetime -> str
+    int, float -> Decimal
+    StrSchema will convert that to bytes and remember the encoding when we pass in str input
+    """
+    if isinstance(arg, (date, datetime)):
+        if not from_server:
+            return arg.isoformat()
+        # ApiTypeError will be thrown later by _validate_type
+        return arg
+    elif isinstance(arg, bool):
+        """
+        this check must come before isinstance(arg, (int, float))
+        because isinstance(True, int) is True
+        """
+        return arg
+    elif isinstance(arg, decimal.Decimal):
+        return arg
+    elif isinstance(arg, int):
+        return decimal.Decimal(arg)
+    elif isinstance(arg, float):
+        decimal_from_float = decimal.Decimal(arg)
+        if decimal_from_float.as_integer_ratio()[1] == 1:
+            # 9.0 -> Decimal('9.0')
+            # 3.4028234663852886e+38 -> Decimal('340282346638528859811704183484516925440.0')
+            return decimal.Decimal(str(decimal_from_float)+'.0')
+        return decimal_from_float
+    elif isinstance(arg, str):
+        return arg
+    elif isinstance(arg, bytes):
+        return arg
+    elif isinstance(arg, (io.FileIO, io.BufferedReader)):
+        if arg.closed:
+            raise ApiValueError('Invalid file state; file is closed and must be open')
+        return arg
+    elif type(arg) is list or type(arg) is tuple:
+        return tuple([cast_to_allowed_types(item) for item in arg])
+    elif type(arg) is dict or type(arg) is frozendict:
+        return frozendict({key: cast_to_allowed_types(val) for key, val in arg.items() if val is not unset})
+    elif arg is None:
+        return arg
+    elif isinstance(arg, Schema):
+        return arg
+    raise ValueError('Invalid type passed in got input={} type={}'.format(arg, type(arg)))
+
+
+class ComposedBase(Discriminable):
+
+    @classmethod
+    def __get_allof_classes(cls, *args, _instantiation_metadata: InstantiationMetadata):
+        path_to_schemas = defaultdict(set)
+        for allof_cls in cls._composed_schemas['allOf']:
+            if allof_cls in _instantiation_metadata.base_classes:
+                continue
+            other_path_to_schemas = allof_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+        return path_to_schemas
+
+    @classmethod
+    def __get_oneof_class(
+        cls,
+        *args,
+        discriminated_cls,
+        _instantiation_metadata: InstantiationMetadata,
+        path_to_schemas: typing.Dict[typing.Tuple, typing.Set[typing.Type[Schema]]]
+    ):
+        oneof_classes = []
+        chosen_oneof_cls = None
+        original_base_classes = _instantiation_metadata.base_classes
+        new_base_classes = _instantiation_metadata.base_classes
+        path_to_schemas = defaultdict(set)
+        for oneof_cls in cls._composed_schemas['oneOf']:
+            if oneof_cls in path_to_schemas[_instantiation_metadata.path_to_item]:
+                oneof_classes.append(oneof_cls)
+                continue
+            if isinstance(args[0], oneof_cls):
+                # passed in instance is the correct type
+                chosen_oneof_cls = oneof_cls
+                oneof_classes.append(oneof_cls)
+                continue
+            _instantiation_metadata.base_classes = original_base_classes
+            try:
+                path_to_schemas = oneof_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+                new_base_classes = _instantiation_metadata.base_classes
+            except (ApiValueError, ApiTypeError) as ex:
+                if discriminated_cls is not None and oneof_cls is discriminated_cls:
+                    raise ex
+                continue
+            chosen_oneof_cls = oneof_cls
+            oneof_classes.append(oneof_cls)
+        if not oneof_classes:
+            raise ApiValueError(
+                "Invalid inputs given to generate an instance of {}. None "
+                "of the oneOf schemas matched the input data.".format(cls)
+            )
+        elif len(oneof_classes) > 1:
+            raise ApiValueError(
+                "Invalid inputs given to generate an instance of {}. Multiple "
+                "oneOf schemas {} matched the inputs, but a max of one is allowed.".format(cls, oneof_classes)
+            )
+        _instantiation_metadata.base_classes = new_base_classes
+        return path_to_schemas
+
+    @classmethod
+    def __get_anyof_classes(
+        cls,
+        *args,
+        discriminated_cls,
+        _instantiation_metadata: InstantiationMetadata
+    ):
+        anyof_classes = []
+        chosen_anyof_cls = None
+        original_base_classes = _instantiation_metadata.base_classes
+        path_to_schemas = defaultdict(set)
+        for anyof_cls in cls._composed_schemas['anyOf']:
+            if anyof_cls in _instantiation_metadata.base_classes:
+                continue
+            if isinstance(args[0], anyof_cls):
+                # passed in instance is the correct type
+                chosen_anyof_cls = anyof_cls
+                anyof_classes.append(anyof_cls)
+                continue
+
+            _instantiation_metadata.base_classes = original_base_classes
+            try:
+                other_path_to_schemas = anyof_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+            except (ApiValueError, ApiTypeError) as ex:
+                if discriminated_cls is not None and anyof_cls is discriminated_cls:
+                    raise ex
+                continue
+            original_base_classes = _instantiation_metadata.base_classes
+            chosen_anyof_cls = anyof_cls
+            anyof_classes.append(anyof_cls)
+            update(path_to_schemas, other_path_to_schemas)
+        if not anyof_classes:
+            raise ApiValueError(
+                "Invalid inputs given to generate an instance of {}. None "
+                "of the anyOf schemas matched the input data.".format(cls)
+            )
+        return path_to_schemas
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        ComposedBase _validate
+        We return dynamic classes of different bases depending upon the inputs
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Returns:
+            new_cls (type): the new class
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        if args and isinstance(args[0], Schema) and _instantiation_metadata.from_server is False:
+            if isinstance(args[0], cls):
+                # an instance of the correct type was passed in
+                return {}
+            raise ApiTypeError(
+                'Incorrect type passed in, required type was {} and passed type was {} at {}'.format(
+                    cls,
+                    type(args[0]),
+                    _instantiation_metadata.path_to_item
+                )
+            )
+
+        # validation checking on types, validations, and enums
+        path_to_schemas = super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+        _instantiation_metadata.base_classes |= frozenset({cls})
+
+        # process composed schema
+        _discriminator = getattr(cls, '_discriminator', None)
+        discriminated_cls = None
+        if _discriminator and args and isinstance(args[0], frozendict):
+            disc_property_name = list(_discriminator.keys())[0]
+            cls._ensure_discriminator_value_present(disc_property_name, _instantiation_metadata, *args)
+            # get discriminated_cls by looking at the dict in the current class
+            discriminated_cls = cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=args[0][disc_property_name])
+            if discriminated_cls is None:
+                raise ApiValueError(
+                    "Invalid discriminator value '{}' was passed in to {}.{} Only the values {} are allowed at {}".format(
+                        args[0][disc_property_name],
+                        cls.__name__,
+                        disc_property_name,
+                        list(_discriminator[disc_property_name].keys()),
+                        _instantiation_metadata.path_to_item + (disc_property_name,)
+                    )
+                )
+
+        if cls._composed_schemas['allOf']:
+            other_path_to_schemas = cls.__get_allof_classes(*args, _instantiation_metadata=_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+        if cls._composed_schemas['oneOf']:
+            other_path_to_schemas = cls.__get_oneof_class(
+                *args,
+                discriminated_cls=discriminated_cls,
+                _instantiation_metadata=_instantiation_metadata,
+                path_to_schemas=path_to_schemas
+            )
+            update(path_to_schemas, other_path_to_schemas)
+        if cls._composed_schemas['anyOf']:
+            other_path_to_schemas = cls.__get_anyof_classes(
+                *args,
+                discriminated_cls=discriminated_cls,
+                _instantiation_metadata=_instantiation_metadata
+            )
+            update(path_to_schemas, other_path_to_schemas)
+
+        if discriminated_cls is not None:
+            # TODO use an exception from this package here
+            assert discriminated_cls in path_to_schemas[_instantiation_metadata.path_to_item]
+        return path_to_schemas
+
+
+# DictBase, ListBase, NumberBase, StrBase, BoolBase, NoneBase
+class ComposedSchema(
+    _SchemaTypeChecker(typing.Union[none_type, str, decimal.Decimal, bool, tuple, frozendict]),
+    ComposedBase,
+    DictBase,
+    ListBase,
+    NumberBase,
+    StrBase,
+    BoolBase,
+    NoneBase,
+    Schema
+):
+
+    # subclass properties
+    _composed_schemas = {}
+
+    @classmethod
+    def _from_openapi_data(cls, *args: typing.Any, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None, **kwargs):
+        if not args:
+            if not kwargs:
+                raise ApiTypeError('{} is missing required input data in args or kwargs'.format(cls.__name__))
+            args = (kwargs, )
+        return super()._from_openapi_data(args[0], _instantiation_metadata=_instantiation_metadata)
+
+
+class ListSchema(
+    _SchemaTypeChecker(typing.Union[tuple]),
+    ListBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.List[typing.Any], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[list, tuple], **kwargs: InstantiationMetadata):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class NoneSchema(
+    _SchemaTypeChecker(typing.Union[none_type]),
+    NoneBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: None, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: None, **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class NumberSchema(
+    _SchemaTypeChecker(typing.Union[decimal.Decimal]),
+    NumberBase,
+    Schema
+):
+    """
+    This is used for type: number with no format
+    Both integers AND floats are accepted
+    """
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[int, float, decimal.Decimal], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[decimal.Decimal, int, float], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class IntBase(NumberBase):
+    @property
+    def as_int(self) -> int:
+        try:
+            return self._as_int
+        except AttributeError:
+            self._as_int = int(self)
+            return self._as_int
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[decimal.Decimal], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, decimal.Decimal):
+            exponent = arg.as_tuple().exponent
+            if exponent != 0:
+                raise ApiValueError(
+                    "Invalid value '{}' for type integer at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        IntBase _validate
+        TODO what about types = (int, number) -> IntBase, NumberBase? We could drop int and keep number only
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class IntSchema(IntBase, NumberSchema):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: int, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[decimal.Decimal, int], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class Int32Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-2147483648),
+        inclusive_maximum=decimal.Decimal(2147483647)
+    ),
+    IntSchema
+):
+    pass
+
+class Int64Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-9223372036854775808),
+        inclusive_maximum=decimal.Decimal(9223372036854775807)
+    ),
+    IntSchema
+):
+    pass
+
+
+class Float32Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-3.4028234663852886e+38),
+        inclusive_maximum=decimal.Decimal(3.4028234663852886e+38)
+    ),
+    NumberSchema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[float, decimal.Decimal], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        # todo check format
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+
+class Float64Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-1.7976931348623157E+308),
+        inclusive_maximum=decimal.Decimal(1.7976931348623157E+308)
+    ),
+    NumberSchema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[float, decimal.Decimal], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        # todo check format
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+
+class StrSchema(
+    _SchemaTypeChecker(typing.Union[str]),
+    StrBase,
+    Schema
+):
+    """
+    date + datetime string types must inherit from this class
+    That is because one can validate a str payload as both:
+    - type: string (format unset)
+    - type: string, format: date
+    """
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[str], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None) -> 'StrSchema':
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[str, date, datetime], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class DateSchema(DateBase, StrSchema):
+
+    def __new__(cls, arg: typing.Union[str, datetime], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class DateTimeSchema(DateTimeBase, StrSchema):
+
+    def __new__(cls, arg: typing.Union[str, datetime], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class DecimalSchema(DecimalBase, StrSchema):
+
+    def __new__(cls, arg: typing.Union[str], **kwargs: typing.Union[InstantiationMetadata]):
+        """
+        Note: Decimals may not be passed in because cast_to_allowed_types is only invoked once for payloads
+        which can be simple (str) or complex (dicts or lists with nested values)
+        Because casting is only done once and recursively casts all values prior to validation then for a potential
+        client side Decimal input if Decimal was accepted as an input in DecimalSchema then one would not know
+        if one was using it for a StrSchema (where it should be cast to str) or one is using it for NumberSchema
+        where it should stay as Decimal.
+        """
+        return super().__new__(cls, arg, **kwargs)
+
+
+class BytesSchema(
+    _SchemaTypeChecker(typing.Union[bytes]),
+    Schema,
+):
+    """
+    this class will subclass bytes and is immutable
+    """
+    def __new__(cls, arg: typing.Union[bytes], **kwargs: typing.Union[InstantiationMetadata]):
+        return super(Schema, cls).__new__(cls, arg)
+
+
+class FileSchema(
+    _SchemaTypeChecker(typing.Union[FileIO]),
+    Schema,
+):
+    """
+    This class is NOT immutable
+    Dynamic classes are built using it for example when AnyType allows in binary data
+    Al other schema classes ARE immutable
+    If one wanted to make this immutable one could make this a DictSchema with required properties:
+    - data = BytesSchema (which would be an immutable bytes based schema)
+    - file_name = StrSchema
+    and cast_to_allowed_types would convert bytes and file instances into dicts containing data + file_name
+    The downside would be that data would be stored in memory which one may not want to do for very large files
+
+    The developer is responsible for closing this file and deleting it
+
+    This class was kept as mutable:
+    - to allow file reading and writing to disk
+    - to be able to preserve file name info
+    """
+
+    def __new__(cls, arg: typing.Union[io.FileIO, io.BufferedReader], **kwargs: typing.Union[InstantiationMetadata]):
+        return super(Schema, cls).__new__(cls, arg)
+
+
+class BinaryBase:
+    pass
+
+
+class BinarySchema(
+    _SchemaTypeChecker(typing.Union[bytes, FileIO]),
+    ComposedBase,
+    BinaryBase,
+    Schema,
+):
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [],
+            'oneOf': [
+                BytesSchema,
+                FileSchema,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(cls, arg: typing.Union[io.FileIO, io.BufferedReader, bytes], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg)
+
+
+class BoolSchema(
+    _SchemaTypeChecker(typing.Union[bool]),
+    BoolBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: bool, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: bool, **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class AnyTypeSchema(
+    _SchemaTypeChecker(
+        typing.Union[frozendict, tuple, decimal.Decimal, str, bool, none_type, bytes, FileIO]
+    ),
+    DictBase,
+    ListBase,
+    NumberBase,
+    StrBase,
+    BoolBase,
+    NoneBase,
+    Schema
+):
+    pass
+
+
+class DictSchema(
+    _SchemaTypeChecker(typing.Union[frozendict]),
+    DictBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Dict[str, typing.Any], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, *args: typing.Union[dict, frozendict], **kwargs: typing.Union[dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, bytes, Schema, Unset, InstantiationMetadata]):
+        return super().__new__(cls, *args, **kwargs)
+
+
+schema_descendents = set([NoneSchema, DictSchema, ListSchema, NumberSchema, StrSchema, BoolSchema])
+
+
+def deserialize_file(response_data, configuration, content_disposition=None):
+    """Deserializes body to file
+
+    Saves response body into a file in a temporary folder,
+    using the filename from the `Content-Disposition` header if provided.
+
+    Args:
+        param response_data (str):  the file data to write
+        configuration (Configuration): the instance to use to convert files
+
+    Keyword Args:
+        content_disposition (str):  the value of the Content-Disposition
+            header
+
+    Returns:
+        (file_type): the deserialized file which is open
+            The user is responsible for closing and reading the file
+    """
+    fd, path = tempfile.mkstemp(dir=configuration.temp_folder_path)
+    os.close(fd)
+    os.remove(path)
+
+    if content_disposition:
+        filename = re.search(r'filename=[\'"]?([^\'"\s]+)[\'"]?',
+                             content_disposition).group(1)
+        path = os.path.join(os.path.dirname(path), filename)
+
+    with open(path, "wb") as f:
+        if isinstance(response_data, str):
+            # change str to bytes so we can write it
+            response_data = response_data.encode('utf-8')
+        f.write(response_data)
+
+    f = open(path, "rb")
+    return f
+
+
+@functools.cache
+def get_new_class(
+    class_name: str,
+    bases: typing.Tuple[typing.Type[typing.Union[Schema, typing.Any]], ...]
+) -> typing.Type[Schema]:
+    """
+    Returns a new class that is made with the subclass bases
+    """
+    return type(class_name, bases, {})
+
+
+LOG_CACHE_USAGE = False
+
+
+def log_cache_usage(cache_fn):
+    if LOG_CACHE_USAGE:
+        print(cache_fn.__name__, cache_fn.cache_info())
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/setup.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/setup.handlebars
new file mode 100644
index 00000000000..7045d259412
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/setup.handlebars
@@ -0,0 +1,51 @@
+# coding: utf-8
+
+{{>partial_header}}
+
+from setuptools import setup, find_packages  # noqa: H301
+
+NAME = "{{{projectName}}}"
+VERSION = "{{packageVersion}}"
+{{#with apiInfo}}
+# To install the library, run the following
+#
+# python setup.py install
+#
+# prerequisite: setuptools
+# http://pypi.python.org/pypi/setuptools
+
+REQUIRES = [
+  "urllib3 >= 1.15",
+  "certifi",
+  "python-dateutil",
+  "frozendict >= 2.0.3",
+{{#if asyncio}}
+  "aiohttp >= 3.0.0",
+{{/if}}
+{{#if tornado}}
+  "tornado>=4.2,<5",
+{{/if}}
+{{#if hasHttpSignatureMethods}}
+  "pem>=19.3.0",
+  "pycryptodome>=3.9.0",
+{{/if}}
+]
+
+setup(
+    name=NAME,
+    version=VERSION,
+    description="{{appName}}",
+    author="{{#if infoName}}{{infoName}}{{/if}}{{#unless infoName}}OpenAPI Generator community{{/unless}}",
+    author_email="{{#if infoEmail}}{{infoEmail}}{{/if}}{{#unless infoEmail}}team@openapitools.org{{/unless}}",
+    url="{{packageUrl}}",
+    keywords=["OpenAPI", "OpenAPI-Generator", "{{{appName}}}"],
+    python_requires="{{{generatorLanguageVersion}}}",
+    install_requires=REQUIRES,
+    packages=find_packages(exclude=["test", "tests"]),
+    include_package_data=True,
+    {{#if licenseInfo}}license="{{licenseInfo}}",
+    {{/if}}long_description="""\
+    {{appDescription}}  # noqa: E501
+    """
+)
+{{/with}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/setup_cfg.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/setup_cfg.handlebars
new file mode 100644
index 00000000000..8cb28d8c285
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/setup_cfg.handlebars
@@ -0,0 +1,13 @@
+{{#if useNose}}
+[nosetests]
+logging-clear-handlers=true
+verbosity=2
+randomize=true
+exe=true
+with-coverage=true
+cover-package={{{packageName}}}
+cover-erase=true
+
+{{/if}}
+[flake8]
+max-line-length=99
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/signing.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/signing.handlebars
new file mode 100644
index 00000000000..26d2b8cb37c
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/signing.handlebars
@@ -0,0 +1,409 @@
+# coding: utf-8
+{{>partial_header}}
+
+from base64 import b64encode
+from Crypto.IO import PEM, PKCS8
+from Crypto.Hash import SHA256, SHA512
+from Crypto.PublicKey import RSA, ECC
+from Crypto.Signature import PKCS1_v1_5, pss, DSS
+from email.utils import formatdate
+import json
+import os
+import re
+from time import time
+from urllib.parse import urlencode, urlparse
+
+# The constants below define a subset of HTTP headers that can be included in the
+# HTTP signature scheme. Additional headers may be included in the signature.
+
+# The '(request-target)' header is a calculated field that includes the HTTP verb,
+# the URL path and the URL query.
+HEADER_REQUEST_TARGET = '(request-target)'
+# The time when the HTTP signature was generated.
+HEADER_CREATED = '(created)'
+# The time when the HTTP signature expires. The API server should reject HTTP requests
+# that have expired.
+HEADER_EXPIRES = '(expires)'
+# The 'Host' header.
+HEADER_HOST = 'Host'
+# The 'Date' header.
+HEADER_DATE = 'Date'
+# When the 'Digest' header is included in the HTTP signature, the client automatically
+# computes the digest of the HTTP request body, per RFC 3230.
+HEADER_DIGEST = 'Digest'
+# The 'Authorization' header is automatically generated by the client. It includes
+# the list of signed headers and a base64-encoded signature.
+HEADER_AUTHORIZATION = 'Authorization'
+
+# The constants below define the cryptographic schemes for the HTTP signature scheme.
+SCHEME_HS2019 = 'hs2019'
+SCHEME_RSA_SHA256 = 'rsa-sha256'
+SCHEME_RSA_SHA512 = 'rsa-sha512'
+
+# The constants below define the signature algorithms that can be used for the HTTP
+# signature scheme.
+ALGORITHM_RSASSA_PSS = 'RSASSA-PSS'
+ALGORITHM_RSASSA_PKCS1v15 = 'RSASSA-PKCS1-v1_5'
+
+ALGORITHM_ECDSA_MODE_FIPS_186_3 = 'fips-186-3'
+ALGORITHM_ECDSA_MODE_DETERMINISTIC_RFC6979 = 'deterministic-rfc6979'
+ALGORITHM_ECDSA_KEY_SIGNING_ALGORITHMS = {
+    ALGORITHM_ECDSA_MODE_FIPS_186_3,
+    ALGORITHM_ECDSA_MODE_DETERMINISTIC_RFC6979
+}
+
+# The cryptographic hash algorithm for the message signature.
+HASH_SHA256 = 'sha256'
+HASH_SHA512 = 'sha512'
+
+
+class HttpSigningConfiguration(object):
+    """The configuration parameters for the HTTP signature security scheme.
+    The HTTP signature security scheme is used to sign HTTP requests with a private key
+    which is in possession of the API client.
+    An 'Authorization' header is calculated by creating a hash of select headers,
+    and optionally the body of the HTTP request, then signing the hash value using
+    a private key. The 'Authorization' header is added to outbound HTTP requests.
+
+    NOTE: This class is auto generated by OpenAPI Generator
+
+    Ref: https://openapi-generator.tech
+    Do not edit the class manually.
+
+    :param key_id: A string value specifying the identifier of the cryptographic key,
+        when signing HTTP requests.
+    :param signing_scheme: A string value specifying the signature scheme, when
+        signing HTTP requests.
+        Supported value are hs2019, rsa-sha256, rsa-sha512.
+        Avoid using rsa-sha256, rsa-sha512 as they are deprecated. These values are
+        available for server-side applications that only support the older
+        HTTP signature algorithms.
+    :param private_key_path: A string value specifying the path of the file containing
+        a private key. The private key is used to sign HTTP requests.
+    :param private_key_passphrase: A string value specifying the passphrase to decrypt
+        the private key.
+    :param signed_headers: A list of strings. Each value is the name of a HTTP header
+        that must be included in the HTTP signature calculation.
+        The two special signature headers '(request-target)' and '(created)' SHOULD be
+        included in SignedHeaders.
+        The '(created)' header expresses when the signature was created.
+        The '(request-target)' header is a concatenation of the lowercased :method, an
+        ASCII space, and the :path pseudo-headers.
+        When signed_headers is not specified, the client defaults to a single value,
+        '(created)', in the list of HTTP headers.
+        When SignedHeaders contains the 'Digest' value, the client performs the
+        following operations:
+        1. Calculate a digest of request body, as specified in RFC3230, section 4.3.2.
+        2. Set the 'Digest' header in the request body.
+        3. Include the 'Digest' header and value in the HTTP signature.
+    :param signing_algorithm: A string value specifying the signature algorithm, when
+        signing HTTP requests.
+        Supported values are:
+        1. For RSA keys: RSASSA-PSS, RSASSA-PKCS1-v1_5.
+        2. For ECDSA keys: fips-186-3, deterministic-rfc6979.
+        If None, the signing algorithm is inferred from the private key.
+        The default signing algorithm for RSA keys is RSASSA-PSS.
+        The default signing algorithm for ECDSA keys is fips-186-3.
+    :param hash_algorithm: The hash algorithm for the signature. Supported values are
+        sha256 and sha512.
+        If the signing_scheme is rsa-sha256, the hash algorithm must be set
+        to None or sha256.
+        If the signing_scheme is rsa-sha512, the hash algorithm must be set
+        to None or sha512.
+    :param signature_max_validity: The signature max validity, expressed as
+        a datetime.timedelta value. It must be a positive value.
+    """
+    def __init__(self, key_id, signing_scheme, private_key_path,
+                 private_key_passphrase=None,
+                 signed_headers=None,
+                 signing_algorithm=None,
+                 hash_algorithm=None,
+                 signature_max_validity=None):
+        self.key_id = key_id
+        if signing_scheme not in {SCHEME_HS2019, SCHEME_RSA_SHA256, SCHEME_RSA_SHA512}:
+            raise Exception("Unsupported security scheme: {0}".format(signing_scheme))
+        self.signing_scheme = signing_scheme
+        if not os.path.exists(private_key_path):
+            raise Exception("Private key file does not exist")
+        self.private_key_path = private_key_path
+        self.private_key_passphrase = private_key_passphrase
+        self.signing_algorithm = signing_algorithm
+        self.hash_algorithm = hash_algorithm
+        if signing_scheme == SCHEME_RSA_SHA256:
+            if self.hash_algorithm is None:
+                self.hash_algorithm = HASH_SHA256
+            elif self.hash_algorithm != HASH_SHA256:
+                raise Exception("Hash algorithm must be sha256 when security scheme is %s" %
+                                SCHEME_RSA_SHA256)
+        elif signing_scheme == SCHEME_RSA_SHA512:
+            if self.hash_algorithm is None:
+                self.hash_algorithm = HASH_SHA512
+            elif self.hash_algorithm != HASH_SHA512:
+                raise Exception("Hash algorithm must be sha512 when security scheme is %s" %
+                                SCHEME_RSA_SHA512)
+        elif signing_scheme == SCHEME_HS2019:
+            if self.hash_algorithm is None:
+                self.hash_algorithm = HASH_SHA256
+            elif self.hash_algorithm not in {HASH_SHA256, HASH_SHA512}:
+                raise Exception("Invalid hash algorithm")
+        if signature_max_validity is not None and signature_max_validity.total_seconds() < 0:
+            raise Exception("The signature max validity must be a positive value")
+        self.signature_max_validity = signature_max_validity
+        # If the user has not provided any signed_headers, the default must be set to '(created)',
+        # as specified in the 'HTTP signature' standard.
+        if signed_headers is None or len(signed_headers) == 0:
+            signed_headers = [HEADER_CREATED]
+        if self.signature_max_validity is None and HEADER_EXPIRES in signed_headers:
+            raise Exception(
+                "Signature max validity must be set when "
+                "'(expires)' signature parameter is specified")
+        if len(signed_headers) != len(set(signed_headers)):
+            raise Exception("Cannot have duplicates in the signed_headers parameter")
+        if HEADER_AUTHORIZATION in signed_headers:
+            raise Exception("'Authorization' header cannot be included in signed headers")
+        self.signed_headers = signed_headers
+        self.private_key = None
+        """The private key used to sign HTTP requests.
+           Initialized when the PEM-encoded private key is loaded from a file.
+        """
+        self.host = None
+        """The host name, optionally followed by a colon and TCP port number.
+        """
+        self._load_private_key()
+
+    def get_http_signature_headers(self, resource_path, method, headers, body, query_params):
+        """Create a cryptographic message signature for the HTTP request and add the signed headers.
+
+        :param resource_path : A string representation of the HTTP request resource path.
+        :param method: A string representation of the HTTP request method, e.g. GET, POST.
+        :param headers: A dict containing the HTTP request headers.
+        :param body: The object representing the HTTP request body.
+        :param query_params: A string representing the HTTP request query parameters.
+        :return: A dict of HTTP headers that must be added to the outbound HTTP request.
+        """
+        if method is None:
+            raise Exception("HTTP method must be set")
+        if resource_path is None:
+            raise Exception("Resource path must be set")
+
+        signed_headers_list, request_headers_dict = self._get_signed_header_info(
+            resource_path, method, headers, body, query_params)
+
+        header_items = [
+            "{0}: {1}".format(key.lower(), value) for key, value in signed_headers_list]
+        string_to_sign = "\n".join(header_items)
+
+        digest, digest_prefix = self._get_message_digest(string_to_sign.encode())
+        b64_signed_msg = self._sign_digest(digest)
+
+        request_headers_dict[HEADER_AUTHORIZATION] = self._get_authorization_header(
+            signed_headers_list, b64_signed_msg)
+
+        return request_headers_dict
+
+    def get_public_key(self):
+        """Returns the public key object associated with the private key.
+        """
+        pubkey = None
+        if isinstance(self.private_key, RSA.RsaKey):
+            pubkey = self.private_key.publickey()
+        elif isinstance(self.private_key, ECC.EccKey):
+            pubkey = self.private_key.public_key()
+        return pubkey
+
+    def _load_private_key(self):
+        """Load the private key used to sign HTTP requests.
+            The private key is used to sign HTTP requests as defined in
+            https://datatracker.ietf.org/doc/draft-cavage-http-signatures/.
+        """
+        if self.private_key is not None:
+            return
+        with open(self.private_key_path, 'r') as f:
+            pem_data = f.read()
+            # Verify PEM Pre-Encapsulation Boundary
+            r = re.compile(r"\s*-----BEGIN (.*)-----\s+")
+            m = r.match(pem_data)
+            if not m:
+                raise ValueError("Not a valid PEM pre boundary")
+            pem_header = m.group(1)
+            if pem_header == 'RSA PRIVATE KEY':
+                self.private_key = RSA.importKey(pem_data, self.private_key_passphrase)
+            elif pem_header == 'EC PRIVATE KEY':
+                self.private_key = ECC.import_key(pem_data, self.private_key_passphrase)
+            elif pem_header in {'PRIVATE KEY', 'ENCRYPTED PRIVATE KEY'}:
+                # Key is in PKCS8 format, which is capable of holding many different
+                # types of private keys, not just EC keys.
+                (key_binary, pem_header, is_encrypted) = \
+                    PEM.decode(pem_data, self.private_key_passphrase)
+                (oid, privkey, params) = \
+                    PKCS8.unwrap(key_binary, passphrase=self.private_key_passphrase)
+                if oid == '1.2.840.10045.2.1':
+                    self.private_key = ECC.import_key(pem_data, self.private_key_passphrase)
+                else:
+                    raise Exception("Unsupported key: {0}. OID: {1}".format(pem_header, oid))
+            else:
+                raise Exception("Unsupported key: {0}".format(pem_header))
+            # Validate the specified signature algorithm is compatible with the private key.
+            if self.signing_algorithm is not None:
+                supported_algs = None
+                if isinstance(self.private_key, RSA.RsaKey):
+                    supported_algs = {ALGORITHM_RSASSA_PSS, ALGORITHM_RSASSA_PKCS1v15}
+                elif isinstance(self.private_key, ECC.EccKey):
+                    supported_algs = ALGORITHM_ECDSA_KEY_SIGNING_ALGORITHMS
+                if supported_algs is not None and self.signing_algorithm not in supported_algs:
+                    raise Exception(
+                        "Signing algorithm {0} is not compatible with private key".format(
+                            self.signing_algorithm))
+
+    def _get_signed_header_info(self, resource_path, method, headers, body, query_params):
+        """Build the HTTP headers (name, value) that need to be included in
+        the HTTP signature scheme.
+
+        :param resource_path : A string representation of the HTTP request resource path.
+        :param method: A string representation of the HTTP request method, e.g. GET, POST.
+        :param headers: A dict containing the HTTP request headers.
+        :param body: The object (e.g. a dict) representing the HTTP request body.
+        :param query_params: A string representing the HTTP request query parameters.
+        :return: A tuple containing two dict objects:
+            The first dict contains the HTTP headers that are used to calculate
+            the HTTP signature.
+            The second dict contains the HTTP headers that must be added to
+            the outbound HTTP request.
+        """
+
+        if body is None:
+            body = ''
+        else:
+            body = json.dumps(body)
+
+        # Build the '(request-target)' HTTP signature parameter.
+        target_host = urlparse(self.host).netloc
+        target_path = urlparse(self.host).path
+        request_target = method.lower() + " " + target_path + resource_path
+        if query_params:
+            request_target += "?" + urlencode(query_params)
+
+        # Get UNIX time, e.g. seconds since epoch, not including leap seconds.
+        now = time()
+        # Format date per RFC 7231 section-7.1.1.2. An example is:
+        # Date: Wed, 21 Oct 2015 07:28:00 GMT
+        cdate = formatdate(timeval=now, localtime=False, usegmt=True)
+        # The '(created)' value MUST be a Unix timestamp integer value.
+        # Subsecond precision is not supported.
+        created = int(now)
+        if self.signature_max_validity is not None:
+            expires = now + self.signature_max_validity.total_seconds()
+
+        signed_headers_list = []
+        request_headers_dict = {}
+        for hdr_key in self.signed_headers:
+            hdr_key = hdr_key.lower()
+            if hdr_key == HEADER_REQUEST_TARGET:
+                value = request_target
+            elif hdr_key == HEADER_CREATED:
+                value = '{0}'.format(created)
+            elif hdr_key == HEADER_EXPIRES:
+                value = '{0}'.format(expires)
+            elif hdr_key == HEADER_DATE.lower():
+                value = cdate
+                request_headers_dict[HEADER_DATE] = '{0}'.format(cdate)
+            elif hdr_key == HEADER_DIGEST.lower():
+                request_body = body.encode()
+                body_digest, digest_prefix = self._get_message_digest(request_body)
+                b64_body_digest = b64encode(body_digest.digest())
+                value = digest_prefix + b64_body_digest.decode('ascii')
+                request_headers_dict[HEADER_DIGEST] = '{0}{1}'.format(
+                    digest_prefix, b64_body_digest.decode('ascii'))
+            elif hdr_key == HEADER_HOST.lower():
+                value = target_host
+                request_headers_dict[HEADER_HOST] = '{0}'.format(target_host)
+            else:
+                value = next((v for k, v in headers.items() if k.lower() == hdr_key), None)
+                if value is None:
+                    raise Exception(
+                        "Cannot sign HTTP request. "
+                        "Request does not contain the '{0}' header".format(hdr_key))
+            signed_headers_list.append((hdr_key, value))
+
+        return signed_headers_list, request_headers_dict
+
+    def _get_message_digest(self, data):
+        """Calculates and returns a cryptographic digest of a specified HTTP request.
+
+        :param data: The string representation of the date to be hashed with a cryptographic hash.
+        :return: A tuple of (digest, prefix).
+            The digest is a hashing object that contains the cryptographic digest of
+            the HTTP request.
+            The prefix is a string that identifies the cryptographc hash. It is used
+            to generate the 'Digest' header as specified in RFC 3230.
+        """
+        if self.hash_algorithm == HASH_SHA512:
+            digest = SHA512.new()
+            prefix = 'SHA-512='
+        elif self.hash_algorithm == HASH_SHA256:
+            digest = SHA256.new()
+            prefix = 'SHA-256='
+        else:
+            raise Exception("Unsupported hash algorithm: {0}".format(self.hash_algorithm))
+        digest.update(data)
+        return digest, prefix
+
+    def _sign_digest(self, digest):
+        """Signs a message digest with a private key specified in the signing_info.
+
+        :param digest: A hashing object that contains the cryptographic digest of the HTTP request.
+        :return: A base-64 string representing the cryptographic signature of the input digest.
+        """
+        sig_alg = self.signing_algorithm
+        if isinstance(self.private_key, RSA.RsaKey):
+            if sig_alg is None or sig_alg == ALGORITHM_RSASSA_PSS:
+                # RSASSA-PSS in Section 8.1 of RFC8017.
+                signature = pss.new(self.private_key).sign(digest)
+            elif sig_alg == ALGORITHM_RSASSA_PKCS1v15:
+                # RSASSA-PKCS1-v1_5 in Section 8.2 of RFC8017.
+                signature = PKCS1_v1_5.new(self.private_key).sign(digest)
+            else:
+                raise Exception("Unsupported signature algorithm: {0}".format(sig_alg))
+        elif isinstance(self.private_key, ECC.EccKey):
+            if sig_alg is None:
+                sig_alg = ALGORITHM_ECDSA_MODE_FIPS_186_3
+            if sig_alg in ALGORITHM_ECDSA_KEY_SIGNING_ALGORITHMS:
+                # draft-ietf-httpbis-message-signatures-00 does not specify the ECDSA encoding.
+                # Issue: https://github.com/w3c-ccg/http-signatures/issues/107
+                signature = DSS.new(key=self.private_key, mode=sig_alg,
+                                    encoding='der').sign(digest)
+            else:
+                raise Exception("Unsupported signature algorithm: {0}".format(sig_alg))
+        else:
+            raise Exception("Unsupported private key: {0}".format(type(self.private_key)))
+        return b64encode(signature)
+
+    def _get_authorization_header(self, signed_headers, signed_msg):
+        """Calculates and returns the value of the 'Authorization' header when signing HTTP requests.
+
+        :param signed_headers : A list of tuples. Each value is the name of a HTTP header that
+            must be included in the HTTP signature calculation.
+        :param signed_msg: A base-64 encoded string representation of the signature.
+        :return: The string value of the 'Authorization' header, representing the signature
+            of the HTTP request.
+        """
+        created_ts = None
+        expires_ts = None
+        for k, v in signed_headers:
+            if k == HEADER_CREATED:
+                created_ts = v
+            elif k == HEADER_EXPIRES:
+                expires_ts = v
+        lower_keys = [k.lower() for k, v in signed_headers]
+        headers_value = " ".join(lower_keys)
+
+        auth_str = "Signature keyId=\"{0}\",algorithm=\"{1}\",".format(
+                                                self.key_id, self.signing_scheme)
+        if created_ts is not None:
+            auth_str = auth_str + "created={0},".format(created_ts)
+        if expires_ts is not None:
+            auth_str = auth_str + "expires={0},".format(expires_ts)
+        auth_str = auth_str + "headers=\"{0}\",signature=\"{1}\"".format(
+                                                headers_value, signed_msg.decode('ascii'))
+
+        return auth_str
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/test-requirements.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/test-requirements.handlebars
new file mode 100644
index 00000000000..3529726b16d
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/test-requirements.handlebars
@@ -0,0 +1,15 @@
+{{#if useNose}}
+coverage>=4.0.3
+nose>=1.3.7
+pluggy>=0.3.1
+py>=1.4.31
+randomize>=0.13
+{{/if}}
+{{#unless useNose}}
+pytest~=4.6.7 # needed for python 3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 3.4
+{{/unless}}
+{{#if hasHttpSignatureMethods}}
+pycryptodome>=3.9.0
+{{/if}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/tox.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/tox.handlebars
new file mode 100644
index 00000000000..d1b68916df4
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/tox.handlebars
@@ -0,0 +1,9 @@
+[tox]
+envlist = py39
+
+[testenv]
+deps=-r{toxinidir}/requirements.txt
+     -r{toxinidir}/test-requirements.txt
+
+commands=
+   {{#unless useNose}}pytest --cov={{{packageName}}}{{/unless}}{{#if useNose}}nosetests{{/if}}
diff --git a/modules/openapi-generator/src/main/resources/python-experimental/travis.handlebars b/modules/openapi-generator/src/main/resources/python-experimental/travis.handlebars
new file mode 100644
index 00000000000..5e4e1f0cc09
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/python-experimental/travis.handlebars
@@ -0,0 +1,18 @@
+# ref: https://docs.travis-ci.com/user/languages/python
+language: python
+python:
+  - "3.5"
+  - "3.6"
+  - "3.7"
+  - "3.8"
+# command to install dependencies
+install:
+  - "pip install -r requirements.txt"
+  - "pip install -r test-requirements.txt"
+# command to run tests
+{{#if useNose}}
+script: nosetests
+{{/if}}
+{{#unless useNose}}
+script: pytest --cov={{{packageName}}}
+{{/unless}}
diff --git a/modules/openapi-generator/src/main/resources/python-fastapi/Dockerfile.mustache b/modules/openapi-generator/src/main/resources/python-fastapi/Dockerfile.mustache
index b66458eb417..2136eab06e5 100644
--- a/modules/openapi-generator/src/main/resources/python-fastapi/Dockerfile.mustache
+++ b/modules/openapi-generator/src/main/resources/python-fastapi/Dockerfile.mustache
@@ -1,4 +1,4 @@
-FROM python:3.7 AS builder
+FROM python:{{{generatorLanguageVersion}}} AS builder
 
 WORKDIR /usr/src/app
 
@@ -11,7 +11,7 @@ COPY . .
 RUN pip install --no-cache-dir .
 
 
-FROM python:3.7 AS test_runner
+FROM python:{{{generatorLanguageVersion}}} AS test_runner
 WORKDIR /tmp
 COPY --from=builder /venv /venv
 COPY --from=builder /usr/src/app/tests tests
@@ -24,7 +24,7 @@ RUN pip install pytest
 RUN pytest tests
 
 
-FROM python:3.7 AS service
+FROM python:{{{generatorLanguageVersion}}} AS service
 WORKDIR /root/app/site-packages
 COPY --from=test_runner /venv /venv
 ENV PATH=/venv/bin:$PATH
diff --git a/modules/openapi-generator/src/main/resources/python-fastapi/README.mustache b/modules/openapi-generator/src/main/resources/python-fastapi/README.mustache
index c426a965f0f..8e6e65b7e8b 100644
--- a/modules/openapi-generator/src/main/resources/python-fastapi/README.mustache
+++ b/modules/openapi-generator/src/main/resources/python-fastapi/README.mustache
@@ -10,7 +10,7 @@ This Python package is automatically generated by the [OpenAPI Generator](https:
 
 ## Requirements.
 
-Python >= 3.7
+Python >= {{{generatorLanguageVersion}}}
 
 ## Installation & Usage
 
diff --git a/modules/openapi-generator/src/main/resources/python-fastapi/setup_cfg.mustache b/modules/openapi-generator/src/main/resources/python-fastapi/setup_cfg.mustache
index 2934cb8fc53..97721bdc497 100644
--- a/modules/openapi-generator/src/main/resources/python-fastapi/setup_cfg.mustache
+++ b/modules/openapi-generator/src/main/resources/python-fastapi/setup_cfg.mustache
@@ -4,11 +4,11 @@ version = {{appVersion}}
 description = {{appDescription}}
 long_description = file: README.md
 keywords = OpenAPI {{appName}}
-python_requires = >= 3.7.*
+python_requires = >= {{{generatorLanguageVersion}}}.*
 classifiers =
     Operating System :: OS Independent
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: {{{generatorLanguageVersion}}}
 
 [options]
 install_requires =
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/README.mustache b/modules/openapi-generator/src/main/resources/python-legacy/README.mustache
index 71f0ef69bbd..ae4af162a14 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/README.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/README.mustache
@@ -17,7 +17,7 @@ For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
 
 ## Requirements.
 
-Python 2.7 and 3.4+
+Python {{{generatorLanguageVersion}}}
 
 ## Installation & Usage
 ### pip install
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/README_onlypackage.mustache b/modules/openapi-generator/src/main/resources/python-legacy/README_onlypackage.mustache
index 3f1d5b1fc64..3f7e0860de3 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/README_onlypackage.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/README_onlypackage.mustache
@@ -17,7 +17,7 @@ For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
 
 ## Requirements.
 
-Python 2.7 and 3.4+
+Python {{{generatorLanguageVersion}}}
 
 ## Installation & Usage
 
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/__init__api.mustache b/modules/openapi-generator/src/main/resources/python-legacy/__init__api.mustache
index db658a10fa8..c2232a92f4c 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/__init__api.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/__init__api.mustache
@@ -3,5 +3,5 @@ from __future__ import absolute_import
 # flake8: noqa
 
 # import apis into api package
-{{#apiInfo}}{{#apis}}from {{apiPackage}}.{{classVarName}} import {{classname}}
+{{#apiInfo}}{{#apis}}from {{apiPackage}}.{{classFilename}} import {{classname}}
 {{/apis}}{{/apiInfo}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/__init__package.mustache b/modules/openapi-generator/src/main/resources/python-legacy/__init__package.mustache
index f81dd5735fa..87a7f612d3b 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/__init__package.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/__init__package.mustache
@@ -9,7 +9,7 @@ from __future__ import absolute_import
 __version__ = "{{packageVersion}}"
 
 # import apis into sdk package
-{{#apiInfo}}{{#apis}}from {{apiPackage}}.{{classVarName}} import {{classname}}
+{{#apiInfo}}{{#apis}}from {{apiPackage}}.{{classFilename}} import {{classname}}
 {{/apis}}{{/apiInfo}}
 # import ApiClient
 from {{packageName}}.api_client import ApiClient
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/api.mustache b/modules/openapi-generator/src/main/resources/python-legacy/api.mustache
index afde9560aa9..723033609f9 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/api.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/api.mustache
@@ -144,7 +144,8 @@ class {{classname}}(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -221,7 +222,7 @@ class {{classname}}(object):
             collection_formats['{{baseName}}'] = '{{collectionFormat}}'{{/isArray}}  # noqa: E501
 {{/queryParams}}
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 {{#headerParams}}
         if '{{paramName}}' in local_var_params:
             header_params['{{baseName}}'] = local_var_params['{{paramName}}']{{#isArray}}  # noqa: E501
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/api_test.mustache b/modules/openapi-generator/src/main/resources/python-legacy/api_test.mustache
index 6f8539bb0d6..a981c662a0d 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/api_test.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/api_test.mustache
@@ -7,7 +7,7 @@ from __future__ import absolute_import
 import unittest
 
 import {{packageName}}
-from {{apiPackage}}.{{classVarName}} import {{classname}}  # noqa: E501
+from {{apiPackage}}.{{classFilename}} import {{classname}}  # noqa: E501
 from {{packageName}}.rest import ApiException
 
 
@@ -15,7 +15,7 @@ class {{#operations}}Test{{classname}}(unittest.TestCase):
     """{{classname}} unit test stubs"""
 
     def setUp(self):
-        self.api = {{apiPackage}}.{{classVarName}}.{{classname}}()  # noqa: E501
+        self.api = {{apiPackage}}.{{classFilename}}.{{classname}}()  # noqa: E501
 
     def tearDown(self):
         pass
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/asyncio/rest.mustache b/modules/openapi-generator/src/main/resources/python-legacy/asyncio/rest.mustache
index 538a69bf8eb..61ad3f2ffa3 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/asyncio/rest.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/asyncio/rest.mustache
@@ -62,7 +62,8 @@ class RESTClientObject(object):
 
         # https pool manager
         self.pool_manager = aiohttp.ClientSession(
-            connector=connector
+            connector=connector,
+            trust_env=True
         )
 
     async def close(self):
diff --git a/modules/openapi-generator/src/main/resources/python-legacy/setup.mustache b/modules/openapi-generator/src/main/resources/python-legacy/setup.mustache
index 71f0e122b93..efb15b97e7a 100644
--- a/modules/openapi-generator/src/main/resources/python-legacy/setup.mustache
+++ b/modules/openapi-generator/src/main/resources/python-legacy/setup.mustache
@@ -36,7 +36,8 @@ setup(
     packages=find_packages(exclude=["test", "tests"]),
     include_package_data=True,
     {{#licenseInfo}}license="{{.}}",
-    {{/licenseInfo}}long_description="""\
+    {{/licenseInfo}}long_description_content_type='text/markdown',
+    long_description="""\
     {{appDescription}}  # noqa: E501
     """
 )
diff --git a/modules/openapi-generator/src/main/resources/python/README.mustache b/modules/openapi-generator/src/main/resources/python/README.mustache
index b066ed85961..b0d33e535ac 100644
--- a/modules/openapi-generator/src/main/resources/python/README.mustache
+++ b/modules/openapi-generator/src/main/resources/python/README.mustache
@@ -17,7 +17,7 @@ For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
 
 ## Requirements.
 
-Python >= 3.6
+Python {{{generatorLanguageVersion}}}
 
 ## Installation & Usage
 ### pip install
diff --git a/modules/openapi-generator/src/main/resources/python/README_common.mustache b/modules/openapi-generator/src/main/resources/python/README_common.mustache
index 268d99beb5f..614a9d0c62e 100644
--- a/modules/openapi-generator/src/main/resources/python/README_common.mustache
+++ b/modules/openapi-generator/src/main/resources/python/README_common.mustache
@@ -6,7 +6,7 @@ from pprint import pprint
 {{#apiInfo}}
 {{#apis}}
 {{#-first}}
-from {{apiPackage}} import {{classVarName}}
+from {{apiPackage}} import {{classFilename}}
 {{#imports}}
 {{{import}}}
 {{/imports}}
@@ -18,7 +18,7 @@ from {{apiPackage}} import {{classVarName}}
 # Enter a context with an instance of the API client
 with {{{packageName}}}.ApiClient(configuration) as api_client:
     # Create an instance of the API class
-    api_instance = {{classVarName}}.{{{classname}}}(api_client)
+    api_instance = {{classFilename}}.{{{classname}}}(api_client)
     {{#allParams}}{{paramName}} = {{{example}}} # {{{dataType}}} | {{{description}}}{{^required}} (optional){{/required}}{{#defaultValue}} (default to {{{.}}}){{/defaultValue}}
     {{/allParams}}
 
diff --git a/modules/openapi-generator/src/main/resources/python/README_onlypackage.mustache b/modules/openapi-generator/src/main/resources/python/README_onlypackage.mustache
index 79457c4b59b..ba08a3acfea 100644
--- a/modules/openapi-generator/src/main/resources/python/README_onlypackage.mustache
+++ b/modules/openapi-generator/src/main/resources/python/README_onlypackage.mustache
@@ -17,7 +17,7 @@ For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
 
 ## Requirements.
 
-Python >= 3.6
+Python {{{generatorLanguageVersion}}}
 
 ## Installation & Usage
 
diff --git a/modules/openapi-generator/src/main/resources/python/__init__apis.mustache b/modules/openapi-generator/src/main/resources/python/__init__apis.mustache
index b4ec8a9a472..927bb6d52c4 100644
--- a/modules/openapi-generator/src/main/resources/python/__init__apis.mustache
+++ b/modules/openapi-generator/src/main/resources/python/__init__apis.mustache
@@ -9,7 +9,7 @@
 # raise a `RecursionError`.
 # In order to avoid this, import only the API that you directly need like:
 #
-#   from {{packagename}}.api.{{classVarName}} import {{classname}}
+#   from {{packagename}}.api.{{classFilename}} import {{classname}}
 #
 # or import this package, but before doing it, use:
 #
@@ -18,6 +18,6 @@
 
 # Import APIs into API package:
 {{/-first}}
-from {{apiPackage}}.{{classVarName}} import {{classname}}
+from {{apiPackage}}.{{classFilename}} import {{classname}}
 {{/apis}}
 {{/apiInfo}}
diff --git a/modules/openapi-generator/src/main/resources/python/api.mustache b/modules/openapi-generator/src/main/resources/python/api.mustache
index bba20b6210b..3406400b4b5 100644
--- a/modules/openapi-generator/src/main/resources/python/api.mustache
+++ b/modules/openapi-generator/src/main/resources/python/api.mustache
@@ -270,6 +270,10 @@ class {{classname}}(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -301,6 +305,9 @@ class {{classname}}(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/modules/openapi-generator/src/main/resources/python/api_client.mustache b/modules/openapi-generator/src/main/resources/python/api_client.mustache
index b083d401dd4..39f33aee0b3 100644
--- a/modules/openapi-generator/src/main/resources/python/api_client.mustache
+++ b/modules/openapi-generator/src/main/resources/python/api_client.mustache
@@ -694,7 +694,8 @@ class Endpoint(object):
             '_return_http_data_only',
             '_check_input_type',
             '_check_return_type',
-            '_content_type'
+            '_content_type',
+            '_spec_property_naming'
         ])
         self.params_map['nullable'].extend(['_request_timeout'])
         self.validations = root_map['validations']
@@ -708,6 +709,7 @@ class Endpoint(object):
             '_return_http_data_only': (bool,),
             '_check_input_type': (bool,),
             '_check_return_type': (bool,),
+            '_spec_property_naming': (bool,),
             '_content_type': (none_type, str)
         }
         self.openapi_types.update(extra_types)
@@ -744,7 +746,7 @@ class Endpoint(object):
                 value,
                 self.openapi_types[key],
                 [key],
-                False,
+                kwargs['_spec_property_naming'],
                 kwargs['_check_input_type'],
                 configuration=self.api_client.configuration
             )
@@ -772,11 +774,11 @@ class Endpoint(object):
                 base_name = self.attribute_map[param_name]
                 if (param_location == 'form' and
                         self.openapi_types[param_name] == (file_type,)):
-                    params['file'][param_name] = [param_value]
+                    params['file'][base_name] = [param_value]
                 elif (param_location == 'form' and
                         self.openapi_types[param_name] == ([file_type],)):
                     # param_value is already a list
-                    params['file'][param_name] = param_value
+                    params['file'][base_name] = param_value
                 elif param_location in {'form', 'query'}:
                     param_value_full = (base_name, param_value)
                     params[param_location].append(param_value_full)
diff --git a/modules/openapi-generator/src/main/resources/python/api_doc_example.mustache b/modules/openapi-generator/src/main/resources/python/api_doc_example.mustache
index 6a08d7c660b..4d6d7bf1dd2 100644
--- a/modules/openapi-generator/src/main/resources/python/api_doc_example.mustache
+++ b/modules/openapi-generator/src/main/resources/python/api_doc_example.mustache
@@ -1,7 +1,7 @@
 ```python
 import time
 import {{{packageName}}}
-from {{apiPackage}} import {{classVarName}}
+from {{apiPackage}} import {{classFilename}}
 {{#imports}}
 {{{.}}}
 {{/imports}}
@@ -15,7 +15,7 @@ with {{{packageName}}}.ApiClient(configuration) as api_client:
 with {{{packageName}}}.ApiClient() as api_client:
 {{/hasAuthMethods}}
     # Create an instance of the API class
-    api_instance = {{classVarName}}.{{{classname}}}(api_client)
+    api_instance = {{classFilename}}.{{{classname}}}(api_client)
 {{#requiredParams}}
 {{^defaultValue}}
     {{paramName}} = {{{example}}} # {{{dataType}}} | {{{description}}}
diff --git a/modules/openapi-generator/src/main/resources/python/api_test.mustache b/modules/openapi-generator/src/main/resources/python/api_test.mustache
index 4b13fad2420..8f3d764d0a5 100644
--- a/modules/openapi-generator/src/main/resources/python/api_test.mustache
+++ b/modules/openapi-generator/src/main/resources/python/api_test.mustache
@@ -3,7 +3,7 @@
 import unittest
 
 import {{packageName}}
-from {{apiPackage}}.{{classVarName}} import {{classname}}  # noqa: E501
+from {{apiPackage}}.{{classFilename}} import {{classname}}  # noqa: E501
 
 
 class {{#operations}}Test{{classname}}(unittest.TestCase):
diff --git a/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache b/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache
index 3744b62c81e..d69e7fd8312 100644
--- a/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache
+++ b/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache
@@ -60,7 +60,8 @@ class RESTClientObject(object):
 
         # https pool manager
         self.pool_manager = aiohttp.ClientSession(
-            connector=connector
+            connector=connector,
+            trust_env=True
         )
 
     async def close(self):
diff --git a/modules/openapi-generator/src/main/resources/python/model_utils.mustache b/modules/openapi-generator/src/main/resources/python/model_utils.mustache
index 24dd544ce05..0e8ad8be5db 100644
--- a/modules/openapi-generator/src/main/resources/python/model_utils.mustache
+++ b/modules/openapi-generator/src/main/resources/python/model_utils.mustache
@@ -1340,6 +1340,7 @@ def model_to_dict(model_instance, serialize=True):
             attribute_map
     """
     result = {}
+    extract_item = lambda item: (item[0], model_to_dict(item[1], serialize=serialize)) if hasattr(item[1], '_data_store') else item
 
     model_instances = [model_instance]
     if model_instance._composed_schemas:
@@ -1369,14 +1370,17 @@ def model_to_dict(model_instance, serialize=True):
                            res.append(v)
                        elif isinstance(v, ModelSimple):
                            res.append(v.value)
+                       elif isinstance(v, dict):
+                           res.append(dict(map(
+                               extract_item,
+                               v.items()
+                           )))
                        else:
                            res.append(model_to_dict(v, serialize=serialize))
                    result[attr] = res
             elif isinstance(value, dict):
                 result[attr] = dict(map(
-                    lambda item: (item[0],
-                                  model_to_dict(item[1], serialize=serialize))
-                    if hasattr(item[1], '_data_store') else item,
+                    extract_item,
                     value.items()
                 ))
             elif isinstance(value, ModelSimple):
diff --git a/modules/openapi-generator/src/main/resources/python/setup.mustache b/modules/openapi-generator/src/main/resources/python/setup.mustache
index af494177549..5f557825638 100644
--- a/modules/openapi-generator/src/main/resources/python/setup.mustache
+++ b/modules/openapi-generator/src/main/resources/python/setup.mustache
@@ -37,7 +37,7 @@ setup(
     author_email="{{infoEmail}}{{^infoEmail}}team@openapitools.org{{/infoEmail}}",
     url="{{packageUrl}}",
     keywords=["OpenAPI", "OpenAPI-Generator", "{{{appName}}}"],
-    python_requires=">=3.6",
+    python_requires="{{{generatorLanguageVersion}}}",
     install_requires=REQUIRES,
     packages=find_packages(exclude=["test", "tests"]),
     include_package_data=True,
diff --git a/modules/openapi-generator/src/main/resources/swift4/APIHelper.mustache b/modules/openapi-generator/src/main/resources/swift4/APIHelper.mustache
deleted file mode 100644
index 8cf57841b7d..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/APIHelper.mustache
+++ /dev/null
@@ -1,70 +0,0 @@
-// APIHelper.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} struct APIHelper {
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static func rejectNil(_ source: [String:Any?]) -> [String:Any]? {
-        let destination = source.reduce(into: [String: Any]()) { (result, item) in
-            if let value = item.value {
-                result[item.key] = value
-            }
-        }
-
-        if destination.isEmpty {
-            return nil
-        }
-        return destination
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static func rejectNilHeaders(_ source: [String:Any?]) -> [String:String] {
-        return source.reduce(into: [String: String]()) { (result, item) in
-            if let collection = item.value as? Array<Any?> {
-                result[item.key] = collection.filter({ $0 != nil }).map{ "\($0!)" }.joined(separator: ",")
-            } else if let value: Any = item.value {
-                result[item.key] = "\(value)"
-            }
-        }
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static func convertBoolToString(_ source: [String: Any]?) -> [String:Any]? {
-        guard let source = source else {
-            return nil
-        }
-
-        return source.reduce(into: [String: Any](), { (result, item) in
-            switch item.value {
-            case let x as Bool:
-                result[item.key] = x.description
-            default:
-                result[item.key] = item.value
-            }
-        })
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static func mapValueToPathItem(_ source: Any) -> Any {
-        if let collection = source as? Array<Any?> {
-            return collection.filter({ $0 != nil }).map({"\($0!)"}).joined(separator: ",")
-        }
-        return source
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static func mapValuesToQueryItems(_ source: [String:Any?]) -> [URLQueryItem]? {
-        let destination = source.filter({ $0.value != nil}).reduce(into: [URLQueryItem]()) { (result, item) in
-            if let collection = item.value as? Array<Any?> {
-                let value = collection.filter({ $0 != nil }).map({"\($0!)"}).joined(separator: ",")
-                result.append(URLQueryItem(name: item.key, value: value))
-            } else if let value = item.value {
-                result.append(URLQueryItem(name: item.key, value: "\(value)"))
-            }
-        }
-
-        if destination.isEmpty {
-            return nil
-        }
-        return destination
-    }
-}
diff --git a/modules/openapi-generator/src/main/resources/swift4/APIs.mustache b/modules/openapi-generator/src/main/resources/swift4/APIs.mustache
deleted file mode 100644
index 0c3f78b057c..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/APIs.mustache
+++ /dev/null
@@ -1,62 +0,0 @@
-// APIs.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class {{projectName}}API {
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var basePath = "{{{basePath}}}"
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var credential: URLCredential?
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var customHeaders: [String:String] = [:]
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var requestBuilderFactory: RequestBuilderFactory = AlamofireRequestBuilderFactory()
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var apiResponseQueue: DispatchQueue = .main
-}
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class RequestBuilder<T> {
-    var credential: URLCredential?
-    var headers: [String:String]
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let parameters: [String:Any]?
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let isBody: Bool
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let method: String
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let URLString: String
-
-    /// Optional block to obtain a reference to the request's progress instance when available.
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var onProgressReady: ((Progress) -> ())?
-
-    required {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init(method: String, URLString: String, parameters: [String:Any]?, isBody: Bool, headers: [String:String] = [:]) {
-        self.method = method
-        self.URLString = URLString
-        self.parameters = parameters
-        self.isBody = isBody
-        self.headers = headers
-
-        addHeaders({{projectName}}API.customHeaders)
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func addHeaders(_ aHeaders:[String:String]) {
-        for (header, value) in aHeaders {
-            headers[header] = value
-        }
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func execute(_ completion: @escaping (_ response: Response<T>?, _ error: Error?) -> Void) { }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func addHeader(name: String, value: String) -> Self {
-        if !value.isEmpty {
-            headers[name] = value
-        }
-        return self
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func addCredential() -> Self {
-        self.credential = {{projectName}}API.credential
-        return self
-    }
-}
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} protocol RequestBuilderFactory {
-    func getNonDecodableBuilder<T>() -> RequestBuilder<T>.Type
-    func getBuilder<T:Decodable>() -> RequestBuilder<T>.Type
-}
diff --git a/modules/openapi-generator/src/main/resources/swift4/AlamofireImplementations.mustache b/modules/openapi-generator/src/main/resources/swift4/AlamofireImplementations.mustache
deleted file mode 100644
index d0750a5fd00..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/AlamofireImplementations.mustache
+++ /dev/null
@@ -1,451 +0,0 @@
-// AlamofireImplementations.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-import Alamofire
-
-class AlamofireRequestBuilderFactory: RequestBuilderFactory {
-    func getNonDecodableBuilder<T>() -> RequestBuilder<T>.Type {
-        return AlamofireRequestBuilder<T>.self
-    }
-
-    func getBuilder<T:Decodable>() -> RequestBuilder<T>.Type {
-        return AlamofireDecodableRequestBuilder<T>.self
-    }
-}
-
-private struct SynchronizedDictionary<K: Hashable, V> {
-
-     private var dictionary = [K: V]()
-     private let queue = DispatchQueue(
-         label: "SynchronizedDictionary",
-         qos: DispatchQoS.userInitiated,
-         attributes: [DispatchQueue.Attributes.concurrent],
-         autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency.inherit,
-         target: nil
-     )
-
-     {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} subscript(key: K) -> V? {
-         get {
-             var value: V?
-
-             queue.sync {
-                 value = self.dictionary[key]
-             }
-
-             return value
-         }
-         set {
-             queue.sync(flags: DispatchWorkItemFlags.barrier) {
-                 self.dictionary[key] = newValue
-             }
-         }
-     }
- }
-
-// Store manager to retain its reference
-private var managerStore = SynchronizedDictionary<String, Alamofire.SessionManager>()
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class AlamofireRequestBuilder<T>: RequestBuilder<T> {
-    required {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init(method: String, URLString: String, parameters: [String : Any]?, isBody: Bool, headers: [String : String] = [:]) {
-        super.init(method: method, URLString: URLString, parameters: parameters, isBody: isBody, headers: headers)
-    }
-
-    /**
-     May be overridden by a subclass if you want to control the session
-     configuration.
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func createSessionManager() -> Alamofire.SessionManager {
-        let configuration = URLSessionConfiguration.default
-        configuration.httpAdditionalHeaders = buildHeaders()
-        return Alamofire.SessionManager(configuration: configuration)
-    }
-
-    /**
-     May be overridden by a subclass if you want to custom request constructor.
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func createURLRequest() -> URLRequest? {
-        let encoding: ParameterEncoding = isBody ? JSONDataEncoding() : URLEncoding()
-        guard let originalRequest = try? URLRequest(url: URLString, method: HTTPMethod(rawValue: method)!, headers: buildHeaders()) else { return nil }
-        return try? encoding.encode(originalRequest, with: parameters)
-    }
-
-    /**
-     May be overridden by a subclass if you want to control the Content-Type
-     that is given to an uploaded form part.
-
-     Return nil to use the default behavior (inferring the Content-Type from
-     the file extension).  Return the desired Content-Type otherwise.
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func contentTypeForFormPart(fileURL: URL) -> String? {
-        return nil
-    }
-
-    /**
-     May be overridden by a subclass if you want to control the request
-     configuration (e.g. to override the cache policy).
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func makeRequest(manager: SessionManager, method: HTTPMethod, encoding: ParameterEncoding, headers: [String:String]) -> DataRequest {
-        return manager.request(URLString, method: method, parameters: parameters, encoding: encoding, headers: headers)
-    }
-
-    override {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func execute(_ completion: @escaping (_ response: Response<T>?, _ error: Error?) -> Void) {
-        let managerId:String = UUID().uuidString
-        // Create a new manager for each request to customize its request header
-        let manager = createSessionManager()
-        managerStore[managerId] = manager
-
-        let encoding:ParameterEncoding = isBody ? JSONDataEncoding() : URLEncoding()
-
-        let xMethod = Alamofire.HTTPMethod(rawValue: method)
-        let fileKeys = parameters == nil ? [] : parameters!.filter { $1 is NSURL }
-                                                           .map { $0.0 }
-
-        if fileKeys.count > 0 {
-            manager.upload(multipartFormData: { mpForm in
-                for (k, v) in self.parameters! {
-                    switch v {
-                    case let fileURL as URL:
-                        if let mimeType = self.contentTypeForFormPart(fileURL: fileURL) {
-                            mpForm.append(fileURL, withName: k, fileName: fileURL.lastPathComponent, mimeType: mimeType)
-                        }
-                        else {
-                            mpForm.append(fileURL, withName: k)
-                        }
-                    case let string as String:
-                        mpForm.append(string.data(using: String.Encoding.utf8)!, withName: k)
-                    case let number as NSNumber:
-                        mpForm.append(number.stringValue.data(using: String.Encoding.utf8)!, withName: k)
-                    default:
-                        fatalError("Unprocessable value \(v) with key \(k)")
-                    }
-                }
-                }, to: URLString, method: xMethod!, headers: nil, encodingCompletion: { encodingResult in
-                switch encodingResult {
-                case .success(let upload, _, _):
-                    if let onProgressReady = self.onProgressReady {
-                        onProgressReady(upload.uploadProgress)
-                    }
-                    self.processRequest(request: upload, managerId, completion)
-                case .failure(let encodingError):
-                    completion(nil, ErrorResponse.error(415, nil, encodingError))
-                }
-            })
-        } else {
-            let request = makeRequest(manager: manager, method: xMethod!, encoding: encoding, headers: headers)
-            if let onProgressReady = self.onProgressReady {
-                onProgressReady(request.progress)
-            }
-            processRequest(request: request, managerId, completion)
-        }
-
-    }
-
-    fileprivate func processRequest(request: DataRequest, _ managerId: String, _ completion: @escaping (_ response: Response<T>?, _ error: Error?) -> Void) {
-        if let credential = self.credential {
-            request.authenticate(usingCredential: credential)
-        }
-
-        let cleanupRequest = {
-            managerStore[managerId] = nil
-        }
-
-        let validatedRequest = request.validate()
-
-        switch T.self {
-        case is String.Type:
-            validatedRequest.responseString(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (stringResponse) in
-                cleanupRequest()
-
-                if stringResponse.result.isFailure {
-                    completion(
-                        nil,
-                        ErrorResponse.error(stringResponse.response?.statusCode ?? 500, stringResponse.data, stringResponse.result.error!)
-                    )
-                    return
-                }
-
-                completion(
-                    Response(
-                        response: stringResponse.response!,
-                        body: ((stringResponse.result.value ?? "") as! T)
-                    ),
-                    nil
-                )
-            })
-        case is URL.Type:
-            validatedRequest.responseData(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (dataResponse) in
-                cleanupRequest()
-
-                do {
-
-                    guard !dataResponse.result.isFailure else {
-                        throw DownloadException.responseFailed
-                    }
-
-                    guard let data = dataResponse.data else {
-                        throw DownloadException.responseDataMissing
-                    }
-
-                    guard let request = request.request else {
-                        throw DownloadException.requestMissing
-                    }
-
-                    let fileManager = FileManager.default
-                    let urlRequest = try request.asURLRequest()
-                    let documentsDirectory = fileManager.urls(for: .documentDirectory, in: .userDomainMask)[0]
-                    let requestURL = try self.getURL(from: urlRequest)
-
-                    var requestPath = try self.getPath(from: requestURL)
-
-                    if let headerFileName = self.getFileName(fromContentDisposition: dataResponse.response?.allHeaderFields["Content-Disposition"] as? String) {
-                        requestPath = requestPath.appending("/\(headerFileName)")
-                    }
-
-                    let filePath = documentsDirectory.appendingPathComponent(requestPath)
-                    let directoryPath = filePath.deletingLastPathComponent().path
-
-                    try fileManager.createDirectory(atPath: directoryPath, withIntermediateDirectories: true, attributes: nil)
-                    try data.write(to: filePath, options: .atomic)
-
-                    completion(
-                        Response(
-                            response: dataResponse.response!,
-                            body: (filePath as! T)
-                        ),
-                        nil
-                    )
-
-                } catch let requestParserError as DownloadException {
-                    completion(nil, ErrorResponse.error(400, dataResponse.data, requestParserError))
-                } catch let error {
-                    completion(nil, ErrorResponse.error(400, dataResponse.data, error))
-                }
-                return
-            })
-        case is Void.Type:
-            validatedRequest.responseData(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (voidResponse) in
-                cleanupRequest()
-
-                if voidResponse.result.isFailure {
-                    completion(
-                        nil,
-                        ErrorResponse.error(voidResponse.response?.statusCode ?? 500, voidResponse.data, voidResponse.result.error!)
-                    )
-                    return
-                }
-
-                completion(
-                    Response(
-                        response: voidResponse.response!,
-                        body: nil),
-                    nil
-                )
-            })
-        default:
-            validatedRequest.responseData(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (dataResponse) in
-                cleanupRequest()
-
-                if dataResponse.result.isFailure {
-                    completion(
-                        nil,
-                        ErrorResponse.error(dataResponse.response?.statusCode ?? 500, dataResponse.data, dataResponse.result.error!)
-                    )
-                    return
-                }
-
-                completion(
-                    Response(
-                        response: dataResponse.response!,
-                        body: (dataResponse.data as! T)
-                    ),
-                    nil
-                )
-            })
-        }
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func buildHeaders() -> [String: String] {
-        var httpHeaders = SessionManager.defaultHTTPHeaders
-        for (key, value) in self.headers {
-            httpHeaders[key] = value
-        }
-        return httpHeaders
-    }
-
-    fileprivate func getFileName(fromContentDisposition contentDisposition : String?) -> String? {
-
-        guard let contentDisposition = contentDisposition else {
-            return nil
-        }
-
-        let items = contentDisposition.components(separatedBy: ";")
-
-        var filename : String? = nil
-
-        for contentItem in items {
-
-            let filenameKey = "filename="
-            guard let range = contentItem.range(of: filenameKey) else {
-                break
-            }
-
-            filename = contentItem
-            return filename?
-                .replacingCharacters(in: range, with:"")
-                .replacingOccurrences(of: "\"", with: "")
-                .trimmingCharacters(in: .whitespacesAndNewlines)
-        }
-
-        return filename
-
-    }
-
-    fileprivate func getPath(from url : URL) throws -> String {
-
-        guard var path = URLComponents(url: url, resolvingAgainstBaseURL: true)?.path else {
-            throw DownloadException.requestMissingPath
-        }
-
-        if path.hasPrefix("/") {
-            path.remove(at: path.startIndex)
-        }
-
-        return path
-
-    }
-
-    fileprivate func getURL(from urlRequest : URLRequest) throws -> URL {
-
-        guard let url = urlRequest.url else {
-            throw DownloadException.requestMissingURL
-        }
-
-        return url
-    }
-
-}
-
-fileprivate enum DownloadException : Error {
-    case responseDataMissing
-    case responseFailed
-    case requestMissing
-    case requestMissingPath
-    case requestMissingURL
-}
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum AlamofireDecodableRequestBuilderError: Error {
-    case emptyDataResponse
-    case nilHTTPResponse
-    case jsonDecoding(DecodingError)
-    case generalError(Error)
-}
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class AlamofireDecodableRequestBuilder<T:Decodable>: AlamofireRequestBuilder<T> {
-
-    override fileprivate func processRequest(request: DataRequest, _ managerId: String, _ completion: @escaping (_ response: Response<T>?, _ error: Error?) -> Void) {
-        if let credential = self.credential {
-            request.authenticate(usingCredential: credential)
-        }
-
-        let cleanupRequest = {
-            managerStore[managerId] = nil
-        }
-
-        let validatedRequest = request.validate()
-
-        switch T.self {
-        case is String.Type:
-            validatedRequest.responseString(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (stringResponse) in
-                cleanupRequest()
-
-                if stringResponse.result.isFailure {
-                    completion(
-                        nil,
-                        ErrorResponse.error(stringResponse.response?.statusCode ?? 500, stringResponse.data, stringResponse.result.error!)
-                    )
-                    return
-                }
-
-                completion(
-                    Response(
-                        response: stringResponse.response!,
-                        body: ((stringResponse.result.value ?? "") as! T)
-                    ),
-                    nil
-                )
-            })
-        case is Void.Type:
-            validatedRequest.responseData(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (voidResponse) in
-                cleanupRequest()
-
-                if voidResponse.result.isFailure {
-                    completion(
-                        nil,
-                        ErrorResponse.error(voidResponse.response?.statusCode ?? 500, voidResponse.data, voidResponse.result.error!)
-                    )
-                    return
-                }
-
-                completion(
-                    Response(
-                        response: voidResponse.response!,
-                        body: nil),
-                    nil
-                )
-            })
-        case is Data.Type:
-            validatedRequest.responseData(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (dataResponse) in
-                cleanupRequest()
-
-                if dataResponse.result.isFailure {
-                    completion(
-                        nil,
-                        ErrorResponse.error(dataResponse.response?.statusCode ?? 500, dataResponse.data, dataResponse.result.error!)
-                    )
-                    return
-                }
-
-                completion(
-                    Response(
-                        response: dataResponse.response!,
-                        body: (dataResponse.data as! T)
-                    ),
-                    nil
-                )
-            })
-        default:
-            validatedRequest.responseData(queue: {{projectName}}API.apiResponseQueue, completionHandler: { (dataResponse: DataResponse<Data>) in
-                cleanupRequest()
-
-                guard dataResponse.result.isSuccess else {
-                    completion(nil, ErrorResponse.error(dataResponse.response?.statusCode ?? 500, dataResponse.data, dataResponse.result.error!))
-                    return
-                }
-
-                guard let data = dataResponse.data, !data.isEmpty else {
-                    completion(nil, ErrorResponse.error(-1, nil, AlamofireDecodableRequestBuilderError.emptyDataResponse))
-                    return
-                }
-
-                guard let httpResponse = dataResponse.response else {
-                    completion(nil, ErrorResponse.error(-2, nil, AlamofireDecodableRequestBuilderError.nilHTTPResponse))
-                    return
-                }
-
-                var responseObj: Response<T>? = nil
-
-                let decodeResult: (decodableObj: T?, error: Error?) = CodableHelper.decode(T.self, from: data)
-                if decodeResult.error == nil {
-                    responseObj = Response(response: httpResponse, body: decodeResult.decodableObj)
-                }
-
-                completion(responseObj, decodeResult.error)
-            })
-        }
-    }
-
-}
diff --git a/modules/openapi-generator/src/main/resources/swift4/Cartfile.mustache b/modules/openapi-generator/src/main/resources/swift4/Cartfile.mustache
deleted file mode 100644
index 23031126023..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Cartfile.mustache
+++ /dev/null
@@ -1,3 +0,0 @@
-github "Alamofire/Alamofire" ~> 4.9.0{{#usePromiseKit}}
-github "mxcl/PromiseKit" ~> 6.11.0{{/usePromiseKit}}{{#useRxSwift}}
-github "ReactiveX/RxSwift" ~> 4.5.0{{/useRxSwift}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/CodableHelper.mustache b/modules/openapi-generator/src/main/resources/swift4/CodableHelper.mustache
deleted file mode 100644
index b8d29582b2e..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/CodableHelper.mustache
+++ /dev/null
@@ -1,75 +0,0 @@
-//
-// CodableHelper.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} typealias EncodeResult = (data: Data?, error: Error?)
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class CodableHelper {
-
-    private static var customDateFormatter: DateFormatter?
-    private static var defaultDateFormatter: DateFormatter = {
-        let dateFormatter = DateFormatter()
-        dateFormatter.calendar = Calendar(identifier: .iso8601)
-        dateFormatter.locale = Locale(identifier: "en_US_POSIX")
-        dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
-        dateFormatter.dateFormat = Configuration.dateFormat
-        return dateFormatter
-    }()
-    private static var customJSONDecoder: JSONDecoder?
-    private static var defaultJSONDecoder: JSONDecoder = {
-        let decoder = JSONDecoder()
-        decoder.dateDecodingStrategy = .formatted(CodableHelper.dateFormatter)
-        return decoder
-    }()
-    private static var customJSONEncoder: JSONEncoder?
-    private static var defaultJSONEncoder: JSONEncoder = {
-       let encoder = JSONEncoder()
-        encoder.dateEncodingStrategy = .formatted(CodableHelper.dateFormatter)
-        encoder.outputFormatting = .prettyPrinted
-        return encoder
-    }()
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var dateFormatter: DateFormatter {
-        get { return self.customDateFormatter ?? self.defaultDateFormatter }
-        set { self.customDateFormatter = newValue }
-    }
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var jsonDecoder: JSONDecoder {
-        get { return self.customJSONDecoder ?? self.defaultJSONDecoder }
-        set { self.customJSONDecoder = newValue }
-    }
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var jsonEncoder: JSONEncoder {
-        get { return self.customJSONEncoder ?? self.defaultJSONEncoder }
-        set { self.customJSONEncoder = newValue }
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func decode<T>(_ type: T.Type, from data: Data) -> (decodableObj: T?, error: Error?) where T : Decodable {
-        var returnedDecodable: T? = nil
-        var returnedError: Error? = nil
-
-        do {
-            returnedDecodable = try self.jsonDecoder.decode(type, from: data)
-        } catch {
-            returnedError = error
-        }
-
-        return (returnedDecodable, returnedError)
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func encode<T>(_ value: T) -> EncodeResult where T : Encodable {
-        var returnedData: Data?
-        var returnedError: Error? = nil
-
-        do {
-            returnedData = try self.jsonEncoder.encode(value)
-        } catch {
-            returnedError = error
-        }
-
-        return (returnedData, returnedError)
-    }
-}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/Configuration.mustache b/modules/openapi-generator/src/main/resources/swift4/Configuration.mustache
deleted file mode 100644
index 84e92d2feed..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Configuration.mustache
+++ /dev/null
@@ -1,15 +0,0 @@
-// Configuration.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class Configuration {
-
-	// This value is used to configure the date formatter that is used to serialize dates into JSON format.
-	// You must set it prior to encoding any dates, and it will only be read once.
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static var dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZZZZZ"
-
-}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/Extensions.mustache b/modules/openapi-generator/src/main/resources/swift4/Extensions.mustache
deleted file mode 100644
index fa2c51d4964..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Extensions.mustache
+++ /dev/null
@@ -1,188 +0,0 @@
-// Extensions.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation{{#usePromiseKit}}
-import PromiseKit{{/usePromiseKit}}
-
-extension Bool: JSONEncodable {
-    func encodeToJSON() -> Any { return self as Any }
-}
-
-extension Float: JSONEncodable {
-    func encodeToJSON() -> Any { return self as Any }
-}
-
-extension Int: JSONEncodable {
-    func encodeToJSON() -> Any { return self as Any }
-}
-
-extension Int32: JSONEncodable {
-    func encodeToJSON() -> Any { return NSNumber(value: self as Int32) }
-}
-
-extension Int64: JSONEncodable {
-    func encodeToJSON() -> Any { return NSNumber(value: self as Int64) }
-}
-
-extension Double: JSONEncodable {
-    func encodeToJSON() -> Any { return self as Any }
-}
-
-extension String: JSONEncodable {
-    func encodeToJSON() -> Any { return self as Any }
-}
-
-extension RawRepresentable where RawValue: JSONEncodable {
-    func encodeToJSON() -> Any { return self.rawValue as Any }
-}
-
-private func encodeIfPossible<T>(_ object: T) -> Any {
-    if let encodableObject = object as? JSONEncodable {
-        return encodableObject.encodeToJSON()
-    } else {
-        return object as Any
-    }
-}
-
-extension Array: JSONEncodable {
-    func encodeToJSON() -> Any {
-        return self.map(encodeIfPossible)
-    }
-}
-
-extension Dictionary: JSONEncodable {
-    func encodeToJSON() -> Any {
-        var dictionary = [AnyHashable: Any]()
-        for (key, value) in self {
-            dictionary[key] = encodeIfPossible(value)
-        }
-        return dictionary as Any
-    }
-}
-
-extension Data: JSONEncodable {
-    func encodeToJSON() -> Any {
-        return self.base64EncodedString(options: Data.Base64EncodingOptions())
-    }
-}
-
-extension Date: JSONEncodable {
-    func encodeToJSON() -> Any {
-        return CodableHelper.dateFormatter.string(from: self) as Any
-    }
-}
-
-extension URL: JSONEncodable {
-    func encodeToJSON() -> Any {
-        return self
-    }
-}
-
-extension UUID: JSONEncodable {
-    func encodeToJSON() -> Any {
-        return self.uuidString
-    }
-}
-
-extension String: CodingKey {
-
-    public var stringValue: String {
-        return self
-    }
-
-    public init?(stringValue: String) {
-        self.init(stringLiteral: stringValue)
-    }
-
-    public var intValue: Int? {
-        return nil
-    }
-
-    public init?(intValue: Int) {
-        return nil
-    }
-
-}
-
-extension KeyedEncodingContainerProtocol {
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} mutating func encodeArray<T>(_ values: [T], forKey key: Self.Key) throws where T : Encodable {
-        var arrayContainer = nestedUnkeyedContainer(forKey: key)
-        try arrayContainer.encode(contentsOf: values)
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} mutating func encodeArrayIfPresent<T>(_ values: [T]?, forKey key: Self.Key) throws where T : Encodable {
-        if let values = values {
-            try encodeArray(values, forKey: key)
-        }
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} mutating func encodeMap<T>(_ pairs: [Self.Key: T]) throws where T : Encodable {
-        for (key, value) in pairs {
-            try encode(value, forKey: key)
-        }
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} mutating func encodeMapIfPresent<T>(_ pairs: [Self.Key: T]?) throws where T : Encodable {
-        if let pairs = pairs {
-            try encodeMap(pairs)
-        }
-    }
-
-}
-
-extension KeyedDecodingContainerProtocol {
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func decodeArray<T>(_ type: T.Type, forKey key: Self.Key) throws -> [T] where T : Decodable {
-        var tmpArray = [T]()
-
-        var nestedContainer = try nestedUnkeyedContainer(forKey: key)
-        while !nestedContainer.isAtEnd {
-            let arrayValue = try nestedContainer.decode(T.self)
-            tmpArray.append(arrayValue)
-        }
-
-        return tmpArray
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func decodeArrayIfPresent<T>(_ type: T.Type, forKey key: Self.Key) throws -> [T]? where T : Decodable {
-        var tmpArray: [T]? = nil
-
-        if contains(key) {
-            tmpArray = try decodeArray(T.self, forKey: key)
-        }
-
-        return tmpArray
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func decodeMap<T>(_ type: T.Type, excludedKeys: Set<Self.Key>) throws -> [Self.Key: T] where T : Decodable {
-        var map: [Self.Key : T] = [:]
-
-        for key in allKeys {
-            if !excludedKeys.contains(key) {
-                let value = try decode(T.self, forKey: key)
-                map[key] = value
-            }
-        }
-
-        return map
-    }
-
-}
-
-{{#usePromiseKit}}extension RequestBuilder {
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func execute() -> Promise<Response<T>>  {
-        let deferred = Promise<Response<T>>.pending()
-        self.execute { (response: Response<T>?, error: Error?) in
-            if let response = response {
-                deferred.resolver.fulfill(response)
-            } else {
-                deferred.resolver.reject(error!)
-            }
-        }
-        return deferred.promise
-    }
-}{{/usePromiseKit}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/JSONEncodableEncoding.mustache b/modules/openapi-generator/src/main/resources/swift4/JSONEncodableEncoding.mustache
deleted file mode 100644
index 69636d84635..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/JSONEncodableEncoding.mustache
+++ /dev/null
@@ -1,54 +0,0 @@
-//
-// JSONDataEncoding.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-import Alamofire
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} struct JSONDataEncoding: ParameterEncoding {
-
-    // MARK: Properties
-
-    private static let jsonDataKey = "jsonData"
-
-    // MARK: Encoding
-
-    /// Creates a URL request by encoding parameters and applying them onto an existing request.
-    ///
-    /// - parameter urlRequest: The request to have parameters applied.
-    /// - parameter parameters: The parameters to apply. This should have a single key/value
-    ///                         pair with "jsonData" as the key and a Data object as the value.
-    ///
-    /// - throws: An `Error` if the encoding process encounters an error.
-    ///
-    /// - returns: The encoded request.
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
-        var urlRequest = try urlRequest.asURLRequest()
-
-        guard let jsonData = parameters?[JSONDataEncoding.jsonDataKey] as? Data, !jsonData.isEmpty else {
-            return urlRequest
-        }
-
-        if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
-            urlRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")
-        }
-
-        urlRequest.httpBody = jsonData
-
-        return urlRequest
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} static func encodingParameters(jsonData: Data?) -> Parameters? {
-        var returnedParams: Parameters? = nil
-        if let jsonData = jsonData, !jsonData.isEmpty {
-            var params = Parameters()
-            params[jsonDataKey] = jsonData
-            returnedParams = params
-        }
-        return returnedParams
-    }
-
-}
diff --git a/modules/openapi-generator/src/main/resources/swift4/JSONEncodingHelper.mustache b/modules/openapi-generator/src/main/resources/swift4/JSONEncodingHelper.mustache
deleted file mode 100644
index 9ba6d2ae1f5..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/JSONEncodingHelper.mustache
+++ /dev/null
@@ -1,43 +0,0 @@
-//
-// JSONEncodingHelper.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-import Alamofire
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class JSONEncodingHelper {
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func encodingParameters<T:Encodable>(forEncodableObject encodableObj: T?) -> Parameters? {
-        var params: Parameters? = nil
-
-        // Encode the Encodable object
-        if let encodableObj = encodableObj {
-            let encodeResult = CodableHelper.encode(encodableObj)
-            if encodeResult.error == nil {
-                params = JSONDataEncoding.encodingParameters(jsonData: encodeResult.data)
-            }
-        }
-
-        return params
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func encodingParameters(forEncodableObject encodableObj: Any?) -> Parameters? {
-        var params: Parameters? = nil
-
-        if let encodableObj = encodableObj {
-            do {
-                let data = try JSONSerialization.data(withJSONObject: encodableObj, options: .prettyPrinted)
-                params = JSONDataEncoding.encodingParameters(jsonData: data)
-            } catch {
-                print(error)
-                return nil
-            }
-        }
-
-        return params
-    }
-
-}
diff --git a/modules/openapi-generator/src/main/resources/swift4/Models.mustache b/modules/openapi-generator/src/main/resources/swift4/Models.mustache
deleted file mode 100644
index 62b20a27c32..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Models.mustache
+++ /dev/null
@@ -1,36 +0,0 @@
-// Models.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-protocol JSONEncodable {
-    func encodeToJSON() -> Any
-}
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum ErrorResponse : Error {
-    case error(Int, Data?, Error)
-}
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class Response<T> {
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let statusCode: Int
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let header: [String: String]
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} let body: T?
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init(statusCode: Int, header: [String: String], body: T?) {
-        self.statusCode = statusCode
-        self.header = header
-        self.body = body
-    }
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} convenience init(response: HTTPURLResponse, body: T?) {
-        let rawHeader = response.allHeaderFields
-        var header = [String:String]()
-        for case let (key, value) as (String, String) in rawHeader {
-            header[key] = value
-        }
-        self.init(statusCode: response.statusCode, header: header, body: body)
-    }
-}
diff --git a/modules/openapi-generator/src/main/resources/swift4/Package.swift.mustache b/modules/openapi-generator/src/main/resources/swift4/Package.swift.mustache
deleted file mode 100644
index 3ca1dfcbfa2..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Package.swift.mustache
+++ /dev/null
@@ -1,33 +0,0 @@
-// swift-tools-version:4.2
-// The swift-tools-version declares the minimum version of Swift required to build this package.
-
-import PackageDescription
-
-let package = Package(
-    name: "{{projectName}}",
-    products: [
-        // Products define the executables and libraries produced by a package, and make them visible to other packages.
-        .library(
-            name: "{{projectName}}",
-            targets: ["{{projectName}}"]),
-    ],
-    dependencies: [
-        // Dependencies declare other packages that this package depends on.
-        .package(url: "https://github.com/Alamofire/Alamofire.git", from: "4.9.0"),
-        {{#usePromiseKit}}
-        .package(url: "https://github.com/mxcl/PromiseKit.git", from: "6.11.0"),
-        {{/usePromiseKit}}
-        {{#useRxSwift}}
-        .package(url: "https://github.com/ReactiveX/RxSwift.git", from: "4.5.0"),
-        {{/useRxSwift}}
-    ],
-    targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
-        .target(
-            name: "{{projectName}}",
-            dependencies: ["Alamofire"{{#usePromiseKit}}, "PromiseKit"{{/usePromiseKit}}{{#useRxSwift}}, "RxSwift"{{/useRxSwift}}],
-            path: "{{projectName}}/Classes"
-        ),
-    ]
-)
diff --git a/modules/openapi-generator/src/main/resources/swift4/Podspec.mustache b/modules/openapi-generator/src/main/resources/swift4/Podspec.mustache
deleted file mode 100644
index 2a9dd2703d3..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Podspec.mustache
+++ /dev/null
@@ -1,38 +0,0 @@
-Pod::Spec.new do |s|
-  s.name = '{{projectName}}'{{#projectDescription}}
-  s.summary = '{{.}}'{{/projectDescription}}
-  s.ios.deployment_target = '9.0'
-  s.osx.deployment_target = '10.11'
-  s.tvos.deployment_target = '9.0'
-  s.version = '{{podVersion}}{{^podVersion}}{{#apiInfo}}{{version}}{{/apiInfo}}{{^apiInfo}}}0.0.1{{/apiInfo}}{{/podVersion}}'
-  s.source = {{#podSource}}{{& podSource}}{{/podSource}}{{^podSource}}{ :git => 'git@github.com:OpenAPITools/openapi-generator.git', :tag => 'v{{#apiInfo}}{{version}}{{/apiInfo}}{{^apiInfo}}}0.0.1{{/apiInfo}}' }{{/podSource}}
-  {{#podAuthors}}
-  s.authors = '{{.}}'
-  {{/podAuthors}}
-  {{#podSocialMediaURL}}
-  s.social_media_url = '{{.}}'
-  {{/podSocialMediaURL}}
-  {{#podDocsetURL}}
-  s.docset_url = '{{.}}'
-  {{/podDocsetURL}}
-  s.license = {{#podLicense}}{{& podLicense}}{{/podLicense}}{{^podLicense}}'Proprietary'{{/podLicense}}
-  s.homepage = '{{podHomepage}}{{^podHomepage}}https://github.com/OpenAPITools/openapi-generator{{/podHomepage}}'
-  s.summary = '{{podSummary}}{{^podSummary}}{{projectName}} Swift SDK{{/podSummary}}'
-  {{#podDescription}}
-  s.description = '{{.}}'
-  {{/podDescription}}
-  {{#podScreenshots}}
-  s.screenshots = {{& podScreenshots}}
-  {{/podScreenshots}}
-  {{#podDocumentationURL}}
-  s.documentation_url = '{{.}}'
-  {{/podDocumentationURL}}
-  s.source_files = '{{projectName}}/Classes/**/*.swift'
-  {{#usePromiseKit}}
-  s.dependency 'PromiseKit/CorePromise', '~> 6.11.0'
-  {{/usePromiseKit}}
-  {{#useRxSwift}}
-  s.dependency 'RxSwift', '~> 4.5.0'
-  {{/useRxSwift}}
-  s.dependency 'Alamofire', '~> 4.9.0'
-end
diff --git a/modules/openapi-generator/src/main/resources/swift4/README.mustache b/modules/openapi-generator/src/main/resources/swift4/README.mustache
deleted file mode 100644
index 95f4a63ff29..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/README.mustache
+++ /dev/null
@@ -1,69 +0,0 @@
-# Swift4 API client for {{{projectName}}}
-
-{{#appDescriptionWithNewLines}}
-{{{.}}}
-{{/appDescriptionWithNewLines}}
-
-## Overview
-This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [openapi-spec](https://github.com/OAI/OpenAPI-Specification) from a remote server, you can easily generate an API client.
-
-- API version: {{appVersion}}
-- Package version: {{packageVersion}}
-{{^hideGenerationTimestamp}}
-- Build date: {{generatedDate}}
-{{/hideGenerationTimestamp}}
-- Build package: {{generatorClass}}
-{{#infoUrl}}
-For more information, please visit [{{{infoUrl}}}]({{{infoUrl}}})
-{{/infoUrl}}
-
-## Installation
-
-### Carthage
-
-Run `carthage update`
-
-### CocoaPods
-
-Run `pod install`
-
-## Documentation for API Endpoints
-
-All URIs are relative to *{{basePath}}*
-
-Class | Method | HTTP request | Description
------------- | ------------- | ------------- | -------------
-{{#apiInfo}}{{#apis}}{{#operations}}{{#operation}}*{{classname}}* | [**{{operationId}}**]({{apiDocPath}}{{classname}}.md#{{operationIdLowerCase}}) | **{{httpMethod}}** {{path}} | {{summary}}
-{{/operation}}{{/operations}}{{/apis}}{{/apiInfo}}
-
-## Documentation For Models
-
-{{#models}}{{#model}} - [{{{classname}}}]({{modelDocPath}}{{{classname}}}.md)
-{{/model}}{{/models}}
-
-## Documentation For Authorization
-
-{{^authMethods}} All endpoints do not require authorization.
-{{/authMethods}}{{#authMethods}}{{#last}} Authentication schemes defined for the API:{{/last}}{{/authMethods}}
-{{#authMethods}}## {{{name}}}
-
-{{#isApiKey}}- **Type**: API key
-- **API key parameter name**: {{{keyParamName}}}
-- **Location**: {{#isKeyInQuery}}URL query string{{/isKeyInQuery}}{{#isKeyInHeader}}HTTP header{{/isKeyInHeader}}
-{{/isApiKey}}
-{{#isBasic}}- **Type**: HTTP basic authentication
-{{/isBasic}}
-{{#isOAuth}}- **Type**: OAuth
-- **Flow**: {{{flow}}}
-- **Authorization URL**: {{{authorizationUrl}}}
-- **Scopes**: {{^scopes}}N/A{{/scopes}}
-{{#scopes}} - **{{{scope}}}**: {{{description}}}
-{{/scopes}}
-{{/isOAuth}}
-
-{{/authMethods}}
-
-## Author
-
-{{#apiInfo}}{{#apis}}{{#-last}}{{infoEmail}}
-{{/-last}}{{/apis}}{{/apiInfo}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/Result.mustache b/modules/openapi-generator/src/main/resources/swift4/Result.mustache
deleted file mode 100644
index e4216be5509..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/Result.mustache
+++ /dev/null
@@ -1,17 +0,0 @@
-//
-// Result.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-#if swift(<5)
-
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum Result<Value, Error: Swift.Error> {
-    case success(Value)
-    case failure(Error)
-}
-
-#endif
diff --git a/modules/openapi-generator/src/main/resources/swift4/XcodeGen.mustache b/modules/openapi-generator/src/main/resources/swift4/XcodeGen.mustache
deleted file mode 100644
index 596193cf856..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/XcodeGen.mustache
+++ /dev/null
@@ -1,17 +0,0 @@
-name: {{projectName}}
-targets:
-  {{projectName}}:
-    type: framework
-    platform: iOS
-    deploymentTarget: "10.0"
-    sources: [{{projectName}}]
-    info:
-      path: ./Info.plist
-      version: {{podVersion}}{{^podVersion}}{{#apiInfo}}{{version}}{{/apiInfo}}{{^apiInfo}}}0.0.1{{/apiInfo}}{{/podVersion}}
-    settings:
-      APPLICATION_EXTENSION_API_ONLY: true
-    scheme: {}
-    dependencies:
-    - carthage: Alamofire{{#useRxSwift}}
-    - carthage: RxSwift{{/useRxSwift}}{{#usePromiseKit}}
-    - carthage: PromiseKit{{/usePromiseKit}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/_param.mustache b/modules/openapi-generator/src/main/resources/swift4/_param.mustache
deleted file mode 100644
index 770458343aa..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/_param.mustache
+++ /dev/null
@@ -1 +0,0 @@
-"{{baseName}}": {{paramName}}{{^required}}?{{/required}}.encodeToJSON()
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/api.mustache b/modules/openapi-generator/src/main/resources/swift4/api.mustache
deleted file mode 100644
index 99c79f9bd57..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/api.mustache
+++ /dev/null
@@ -1,216 +0,0 @@
-{{#operations}}//
-// {{classname}}.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation{{#usePromiseKit}}
-import PromiseKit{{/usePromiseKit}}{{#useRxSwift}}
-import RxSwift{{/useRxSwift}}
-
-{{#swiftUseApiNamespace}}
-extension {{projectName}}API {
-{{/swiftUseApiNamespace}}
-
-{{#description}}
-/** {{.}} */{{/description}}
-{{#objcCompatible}}@objc {{/objcCompatible}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class {{classname}}{{#objcCompatible}} : NSObject{{/objcCompatible}} {
-{{#operation}}
-    {{#allParams}}
-    {{#isEnum}}
-    /**
-     * enum for parameter {{paramName}}
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{enumName}}_{{operationId}}: {{^isContainer}}{{{dataType}}}{{/isContainer}}{{#isContainer}}String{{/isContainer}} {
-        {{#allowableValues}}
-        {{#enumVars}}
-        case {{name}} = {{{value}}}
-        {{/enumVars}}
-        {{/allowableValues}}
-    }
-
-    {{/isEnum}}
-    {{/allParams}}
-{{^usePromiseKit}}
-{{^useRxSwift}}
-    /**
-     {{#summary}}
-     {{{.}}}
-     {{/summary}}{{#allParams}}
-     - parameter {{paramName}}: ({{#isFormParam}}form{{/isFormParam}}{{#isQueryParam}}query{{/isQueryParam}}{{#isPathParam}}path{{/isPathParam}}{{#isHeaderParam}}header{{/isHeaderParam}}{{#isBodyParam}}body{{/isBodyParam}}) {{description}} {{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{/allParams}}
-     - parameter completion: completion handler to receive the data and the error objects
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}completion: @escaping ((_ data: {{{returnType}}}{{^returnType}}Void{{/returnType}}?,_ error: Error?) -> Void)) {
-        {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).execute { (response, error) -> Void in
-        {{#returnType}}
-            completion(response?.body, error)
-        {{/returnType}}
-        {{^returnType}}
-            if error == nil {
-                completion((), error)
-            } else {
-                completion(nil, error)
-            }
-        {{/returnType}}
-        }
-    }
-{{/useRxSwift}}
-{{/usePromiseKit}}
-{{#usePromiseKit}}
-    /**
-     {{#summary}}
-     {{{.}}}
-     {{/summary}}{{#allParams}}
-     - parameter {{paramName}}: ({{#isFormParam}}form{{/isFormParam}}{{#isQueryParam}}query{{/isQueryParam}}{{#isPathParam}}path{{/isPathParam}}{{#isHeaderParam}}header{{/isHeaderParam}}{{#isBodyParam}}body{{/isBodyParam}}) {{description}} {{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{/allParams}}
-     - returns: Promise<{{{returnType}}}{{^returnType}}Void{{/returnType}}>
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}} {{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Promise<{{{returnType}}}{{^returnType}}Void{{/returnType}}> {
-        let deferred = Promise<{{{returnType}}}{{^returnType}}Void{{/returnType}}>.pending()
-        {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).execute { (response, error) -> Void in
-            if let error = error {
-                deferred.resolver.reject(error)
-{{#returnType}}
-            } else if let response = response {
-                deferred.resolver.fulfill(response.body!)
-            } else {
-                fatalError()
-{{/returnType}}
-{{^returnType}}
-            } else {
-                deferred.resolver.fulfill(())
-{{/returnType}}
-            }
-        }
-        return deferred.promise
-    }
-{{/usePromiseKit}}
-{{#useRxSwift}}
-    /**
-     {{#summary}}
-     {{{.}}}
-     {{/summary}}{{#allParams}}
-     - parameter {{paramName}}: ({{#isFormParam}}form{{/isFormParam}}{{#isQueryParam}}query{{/isQueryParam}}{{#isPathParam}}path{{/isPathParam}}{{#isHeaderParam}}header{{/isHeaderParam}}{{#isBodyParam}}body{{/isBodyParam}}) {{description}} {{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{/allParams}}
-     - returns: Observable<{{{returnType}}}{{^returnType}}Void{{/returnType}}>
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Observable<{{{returnType}}}{{^returnType}}Void{{/returnType}}> {
-        return Observable.create { observer -> Disposable in
-            {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).execute { (response, error) -> Void in
-                if let error = error {
-                    observer.onError(error)
-{{#returnType}}
-                } else if let response = response {
-                    observer.onNext(response.body!)
-                } else {
-                    fatalError()
-{{/returnType}}
-{{^returnType}}
-                } else {
-                    observer.onNext(())
-{{/returnType}}
-                }
-                observer.onCompleted()
-            }
-            return Disposables.create()
-        }
-    }
-{{/useRxSwift}}
-{{#useResult}}
-    /**
-     {{#summary}}
-     {{{.}}}
-     {{/summary}}{{#allParams}}
-     - parameter {{paramName}}: ({{#isFormParam}}form{{/isFormParam}}{{#isQueryParam}}query{{/isQueryParam}}{{#isPathParam}}path{{/isPathParam}}{{#isHeaderParam}}header{{/isHeaderParam}}{{#isBodyParam}}body{{/isBodyParam}}) {{description}} {{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}{{/allParams}}
-     - parameter completion: completion handler to receive the result
-     */
-    open class func {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}completion: @escaping ((_ result: Result<{{{returnType}}}{{^returnType}}Void{{/returnType}}, Error>) -> Void)) {
-        {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).execute { (response, error) -> Void in
-            if let error = error {
-                completion(.failure(error))
-        {{#returnType}}
-            } else if let response = response {
-                completion(.success(response.body!))
-            } else {
-                fatalError()
-            }
-        {{/returnType}}
-        {{^returnType}}
-            } else {
-                completion(.success(()))
-            }
-        {{/returnType}}
-        }
-    }
-{{/useResult}}
-
-    /**
-     {{#summary}}
-     {{{.}}}
-     {{/summary}}
-     - {{httpMethod}} {{{path}}}{{#notes}}
-     - {{{.}}}{{/notes}}{{#subresourceOperation}}
-     - subresourceOperation: {{.}}{{/subresourceOperation}}{{#defaultResponse}}
-     - defaultResponse: {{.}}{{/defaultResponse}}
-     {{#authMethods}}
-     - {{#isBasic}}BASIC{{/isBasic}}{{#isOAuth}}OAuth{{/isOAuth}}{{#isApiKey}}API Key{{/isApiKey}}:
-       - type: {{type}}{{#keyParamName}} {{keyParamName}} {{#isKeyInQuery}}(QUERY){{/isKeyInQuery}}{{#isKeyInHeaer}}(HEADER){{/isKeyInHeaer}}{{/keyParamName}}
-       - name: {{name}}
-       {{/authMethods}}
-     {{#hasResponseHeaders}}
-     - responseHeaders: [{{#responseHeaders}}{{{baseName}}}({{{dataType}}}){{^-last}}, {{/-last}}{{/responseHeaders}}]
-     {{/hasResponseHeaders}}
-     {{#externalDocs}}
-     - externalDocs: {{.}}
-     {{/externalDocs}}
-     {{#allParams}}
-     - parameter {{paramName}}: ({{#isFormParam}}form{{/isFormParam}}{{#isQueryParam}}query{{/isQueryParam}}{{#isPathParam}}path{{/isPathParam}}{{#isHeaderParam}}header{{/isHeaderParam}}{{#isBodyParam}}body{{/isBodyParam}}) {{description}} {{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
-     {{/allParams}}
-     - returns: RequestBuilder<{{{returnType}}}{{^returnType}}Void{{/returnType}}> {{description}}
-     */
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}WithRequestBuilder({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> RequestBuilder<{{{returnType}}}{{^returnType}}Void{{/returnType}}> {
-        {{^pathParams}}let{{/pathParams}}{{#pathParams}}{{#-first}}var{{/-first}}{{/pathParams}} path = "{{{path}}}"{{#pathParams}}
-        let {{paramName}}PreEscape = "\({{#isEnum}}{{paramName}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}.rawValue{{/isContainer}}{{/isEnum}}{{^isEnum}}APIHelper.mapValueToPathItem({{paramName}}){{/isEnum}})"
-        let {{paramName}}PostEscape = {{paramName}}PreEscape.addingPercentEncoding(withAllowedCharacters: .urlPathAllowed) ?? ""
-        path = path.replacingOccurrences(of: "{{=<% %>=}}{<%baseName%>}<%={{ }}=%>", with: {{paramName}}PostEscape, options: .literal, range: nil){{/pathParams}}
-        let URLString = {{projectName}}API.basePath + path
-        {{#bodyParam}}
-        let parameters = JSONEncodingHelper.encodingParameters(forEncodableObject: {{paramName}})
-        {{/bodyParam}}
-        {{^bodyParam}}
-            {{#hasFormParams}}
-        let formParams: [String:Any?] = [
-                {{#formParams}}
-            {{> _param}}{{^-last}},{{/-last}}
-                {{/formParams}}
-        ]
-
-        let nonNullParameters = APIHelper.rejectNil(formParams)
-        let parameters = APIHelper.convertBoolToString(nonNullParameters)
-            {{/hasFormParams}}
-            {{^hasFormParams}}
-        let parameters: [String:Any]? = nil
-            {{/hasFormParams}}
-        {{/bodyParam}}{{#hasQueryParams}}
-        var url = URLComponents(string: URLString)
-        url?.queryItems = APIHelper.mapValuesToQueryItems([{{^queryParams}}:{{/queryParams}}
-            {{#queryParams}}
-            {{> _param}}{{^-last}}, {{/-last}}
-            {{/queryParams}}
-        ]){{/hasQueryParams}}{{^hasQueryParams}}
-        let url = URLComponents(string: URLString){{/hasQueryParams}}{{#headerParams}}{{#-first}}
-        let nillableHeaders: [String: Any?] = [{{/-first}}
-            {{> _param}}{{^-last}},{{/-last}}{{#-last}}
-        ]
-        let headerParameters = APIHelper.rejectNilHeaders(nillableHeaders){{/-last}}{{/headerParams}}
-
-        let requestBuilder: RequestBuilder<{{{returnType}}}{{^returnType}}Void{{/returnType}}>.Type = {{projectName}}API.requestBuilderFactory.{{#returnType}}getBuilder(){{/returnType}}{{^returnType}}getNonDecodableBuilder(){{/returnType}}
-
-        return requestBuilder.init(method: "{{httpMethod}}", URLString: (url?.string ?? URLString), parameters: parameters, isBody: {{hasBodyParam}}{{#headerParams}}{{#-first}}, headers: headerParameters{{/-first}}{{/headerParams}})
-    }
-
-{{/operation}}
-}
-{{#swiftUseApiNamespace}}
-}
-{{/swiftUseApiNamespace}}
-{{/operations}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/api_doc.mustache b/modules/openapi-generator/src/main/resources/swift4/api_doc.mustache
deleted file mode 100644
index c634111c699..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/api_doc.mustache
+++ /dev/null
@@ -1,97 +0,0 @@
-# {{classname}}{{#description}}
-{{.}}{{/description}}
-
-All URIs are relative to *{{{basePath}}}*
-
-Method | HTTP request | Description
-------------- | ------------- | -------------
-{{#operations}}{{#operation}}[**{{operationId}}**]({{classname}}.md#{{operationIdLowerCase}}) | **{{httpMethod}}** {{path}} | {{summary}}
-{{/operation}}{{/operations}}
-
-{{#operations}}
-{{#operation}}
-# **{{{operationId}}}**
-```swift
-{{^usePromiseKit}}
-{{^useRxSwift}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}{{#hasParams}}, {{/hasParams}}completion: @escaping (_ data: {{{returnType}}}{{^returnType}}Void{{/returnType}}?, _ error: Error?) -> Void)
-{{/useRxSwift}}
-{{/usePromiseKit}}
-{{#usePromiseKit}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}} {{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Promise<{{{returnType}}}{{^returnType}}Void{{/returnType}}>
-{{/usePromiseKit}}
-{{#useRxSwift}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class func {{operationId}}({{#allParams}}{{paramName}}: {{#isEnum}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{^isContainer}}{{{datatypeWithEnum}}}_{{operationId}}{{/isContainer}}{{/isEnum}}{{^isEnum}}{{{dataType}}}{{/isEnum}}{{^required}}? = nil{{/required}}{{^-last}}, {{/-last}}{{/allParams}}) -> Observable<{{{returnType}}}{{^returnType}}Void{{/returnType}}>
-{{/useRxSwift}}
-```
-
-{{{summary}}}{{#notes}}
-
-{{{.}}}{{/notes}}
-
-### Example
-```swift
-// The following code samples are still beta. For any issue, please report via http://github.com/OpenAPITools/openapi-generator/issues/new
-import {{{projectName}}}
-
-{{#allParams}}let {{paramName}} = {{{vendorExtensions.x-swift-example}}} // {{{dataType}}} | {{{description}}}{{^required}} (optional){{/required}}{{#defaultValue}} (default to {{{.}}}){{/defaultValue}}
-{{/allParams}}
-
-{{^usePromiseKit}}
-{{^useRxSwift}}
-{{#summary}}
-// {{{.}}}
-{{/summary}}
-{{classname}}.{{{operationId}}}({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}) { (response, error) in
-    guard error == nil else {
-        print(error)
-        return
-    }
-
-    if (response) {
-        dump(response)
-    }
-}
-{{/useRxSwift}}
-{{/usePromiseKit}}
-{{#usePromiseKit}}
-{{#summary}}
-// {{{.}}}
-{{/summary}}
-{{classname}}.{{{operationId}}}({{#allParams}}{{paramName}}: {{paramName}}{{^-last}}, {{/-last}}{{/allParams}}).then {
-         // when the promise is fulfilled
-     }.always {
-         // regardless of whether the promise is fulfilled, or rejected
-     }.catch { errorType in
-         // when the promise is rejected
-}
-{{/usePromiseKit}}
-{{#useRxSwift}}
-// TODO RxSwift sample code not yet implemented. To contribute, please open a ticket via http://github.com/OpenAPITools/openapi-generator/issues/new
-{{/useRxSwift}}
-```
-
-### Parameters
-{{^allParams}}This endpoint does not need any parameter.{{/allParams}}{{#allParams}}{{#-last}}
-Name | Type | Description  | Notes
-------------- | ------------- | ------------- | -------------{{/-last}}{{/allParams}}
-{{#allParams}} **{{paramName}}** | {{#isPrimitiveType}}**{{dataType}}**{{/isPrimitiveType}}{{^isPrimitiveType}}[**{{dataType}}**]({{baseType}}.md){{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#defaultValue}}[default to {{.}}]{{/defaultValue}}
-{{/allParams}}
-
-### Return type
-
-{{#returnType}}{{#returnTypeIsPrimitive}}**{{{returnType}}}**{{/returnTypeIsPrimitive}}{{^returnTypeIsPrimitive}}[**{{{returnType}}}**]({{returnBaseType}}.md){{/returnTypeIsPrimitive}}{{/returnType}}{{^returnType}}Void (empty response body){{/returnType}}
-
-### Authorization
-
-{{^authMethods}}No authorization required{{/authMethods}}{{#authMethods}}[{{{name}}}](../README.md#{{{name}}}){{^-last}}, {{/-last}}{{/authMethods}}
-
-### HTTP request headers
-
- - **Content-Type**: {{#consumes}}{{{mediaType}}}{{^-last}}, {{/-last}}{{/consumes}}{{^consumes}}Not defined{{/consumes}}
- - **Accept**: {{#produces}}{{{mediaType}}}{{^-last}}, {{/-last}}{{/produces}}{{^produces}}Not defined{{/produces}}
-
-[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
-
-{{/operation}}
-{{/operations}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/gitignore.mustache b/modules/openapi-generator/src/main/resources/swift4/gitignore.mustache
deleted file mode 100644
index fc4e330f8fa..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/gitignore.mustache
+++ /dev/null
@@ -1,63 +0,0 @@
-# Xcode
-#
-# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
-
-## Build generated
-build/
-DerivedData
-
-## Various settings
-*.pbxuser
-!default.pbxuser
-*.mode1v3
-!default.mode1v3
-*.mode2v3
-!default.mode2v3
-*.perspectivev3
-!default.perspectivev3
-xcuserdata
-
-## Other
-*.xccheckout
-*.moved-aside
-*.xcuserstate
-*.xcscmblueprint
-
-## Obj-C/Swift specific
-*.hmap
-*.ipa
-
-## Playgrounds
-timeline.xctimeline
-playground.xcworkspace
-
-# Swift Package Manager
-#
-# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
-# Packages/
-.build/
-
-# CocoaPods
-#
-# We recommend against adding the Pods directory to your .gitignore. However
-# you should judge for yourself, the pros and cons are mentioned at:
-# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
-#
-# Pods/
-
-# Carthage
-#
-# Add this line if you want to avoid checking in source code from Carthage dependencies.
-# Carthage/Checkouts
-
-Carthage/Build
-
-# fastlane
-#
-# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
-# screenshots whenever they are needed.
-# For more information about the recommended setup visit:
-# https://github.com/fastlane/fastlane/blob/master/docs/Gitignore.md
-
-fastlane/report.xml
-fastlane/screenshots
diff --git a/modules/openapi-generator/src/main/resources/swift4/model.mustache b/modules/openapi-generator/src/main/resources/swift4/model.mustache
deleted file mode 100644
index a47acfb01ef..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/model.mustache
+++ /dev/null
@@ -1,24 +0,0 @@
-{{#models}}{{#model}}//
-// {{classname}}.swift
-//
-// Generated by openapi-generator
-// https://openapi-generator.tech
-//
-
-import Foundation
-
-{{#description}}
-/** {{.}} */{{/description}}
-{{#isArray}}
-{{> modelArray}}
-{{/isArray}}
-{{^isArray}}
-{{#isEnum}}
-{{> modelEnum}}
-{{/isEnum}}
-{{^isEnum}}
-{{> modelObject}}
-{{/isEnum}}
-{{/isArray}}
-{{/model}}
-{{/models}}
diff --git a/modules/openapi-generator/src/main/resources/swift4/modelArray.mustache b/modules/openapi-generator/src/main/resources/swift4/modelArray.mustache
deleted file mode 100644
index 536c5e9eea4..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/modelArray.mustache
+++ /dev/null
@@ -1 +0,0 @@
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} typealias {{classname}} = {{parent}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/modelEnum.mustache b/modules/openapi-generator/src/main/resources/swift4/modelEnum.mustache
deleted file mode 100644
index 4a28e656e2d..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/modelEnum.mustache
+++ /dev/null
@@ -1,7 +0,0 @@
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{classname}}: {{dataType}}, Codable {
-{{#allowableValues}}
-{{#enumVars}}
-    case {{name}} = {{{value}}}
-{{/enumVars}}
-{{/allowableValues}}
-}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/modelInlineEnumDeclaration.mustache b/modules/openapi-generator/src/main/resources/swift4/modelInlineEnumDeclaration.mustache
deleted file mode 100644
index e7fed7d16ea..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/modelInlineEnumDeclaration.mustache
+++ /dev/null
@@ -1,7 +0,0 @@
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{enumName}}: {{^isContainer}}{{dataType}}{{/isContainer}}{{#isContainer}}String{{/isContainer}}, Codable {
-        {{#allowableValues}}
-        {{#enumVars}}
-        case {{name}} = {{{value}}}
-        {{/enumVars}}
-        {{/allowableValues}}
-    }
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/modelObject.mustache b/modules/openapi-generator/src/main/resources/swift4/modelObject.mustache
deleted file mode 100644
index 41c0245ca7f..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/modelObject.mustache
+++ /dev/null
@@ -1,81 +0,0 @@
-{{^objcCompatible}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} struct {{classname}}: Codable { {{/objcCompatible}}
-{{#objcCompatible}}@objc {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} class {{classname}}: NSObject, Codable { {{/objcCompatible}}
-
-{{#allVars}}
-{{#isEnum}}
-{{> modelInlineEnumDeclaration}}
-{{/isEnum}}
-{{/allVars}}
-{{#allVars}}
-{{#isEnum}}
-    {{#description}}/** {{.}} */
-    {{/description}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var {{name}}: {{{datatypeWithEnum}}}{{#unwrapRequired}}?{{/unwrapRequired}}{{^unwrapRequired}}{{^required}}?{{/required}}{{/unwrapRequired}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}
-{{/isEnum}}
-{{^isEnum}}
-    {{#description}}/** {{.}} */
-    {{/description}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var {{name}}: {{{datatype}}}{{#unwrapRequired}}?{{/unwrapRequired}}{{^unwrapRequired}}{{^required}}?{{/required}}{{/unwrapRequired}}{{#defaultValue}} = {{{.}}}{{/defaultValue}}{{#objcCompatible}}{{#vendorExtensions.x-swift-optional-scalar}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var {{name}}Num: NSNumber? {
-        get {
-            return {{name}} as NSNumber?
-        }
-    }{{/vendorExtensions.x-swift-optional-scalar}}{{/objcCompatible}}
-{{/isEnum}}
-{{/allVars}}
-
-{{#hasVars}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init({{#allVars}}{{name}}: {{{datatypeWithEnum}}}{{#unwrapRequired}}?{{/unwrapRequired}}{{^unwrapRequired}}{{^required}}?{{/required}}{{/unwrapRequired}}{{^-last}}, {{/-last}}{{/allVars}}) {
-        {{#allVars}}
-        self.{{name}} = {{name}}
-        {{/allVars}}
-    }
-{{/hasVars}}
-{{#additionalPropertiesType}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var additionalProperties: [String:{{{additionalPropertiesType}}}] = [:]
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} subscript(key: String) -> {{{additionalPropertiesType}}}? {
-        get {
-            if let value = additionalProperties[key] {
-                return value
-            }
-            return nil
-        }
-
-        set {
-            additionalProperties[key] = newValue
-        }
-    }
-
-    // Encodable protocol methods
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} func encode(to encoder: Encoder) throws {
-
-        var container = encoder.container(keyedBy: String.self)
-
-        {{#allVars}}
-        try container.encode{{#unwrapRequired}}IfPresent{{/unwrapRequired}}{{^unwrapRequired}}{{^required}}IfPresent{{/required}}{{/unwrapRequired}}({{{name}}}, forKey: "{{{baseName}}}")
-        {{/allVars}}
-        try container.encodeMap(additionalProperties)
-    }
-
-    // Decodable protocol methods
-
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}}{{#objcCompatible}} required{{/objcCompatible}} init(from decoder: Decoder) throws {
-        let container = try decoder.container(keyedBy: String.self)
-
-        {{#allVars}}
-        {{name}} = try container.decode{{#unwrapRequired}}IfPresent{{/unwrapRequired}}{{^unwrapRequired}}{{^required}}IfPresent{{/required}}{{/unwrapRequired}}({{{datatypeWithEnum}}}.self, forKey: "{{{baseName}}}")
-        {{/allVars}}
-        var nonAdditionalPropertyKeys = Set<String>()
-        {{#allVars}}
-        nonAdditionalPropertyKeys.insert("{{{baseName}}}")
-        {{/allVars}}
-        additionalProperties = try container.decodeMap({{{additionalPropertiesType}}}.self, excludedKeys: nonAdditionalPropertyKeys)
-    }
-
-{{/additionalPropertiesType}}
-{{^additionalPropertiesType}}{{#vendorExtensions.x-codegen-has-escaped-property-names}}
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum CodingKeys: String, CodingKey { {{#allVars}}
-        case {{name}}{{#vendorExtensions.x-codegen-escaped-property-name}} = "{{{baseName}}}"{{/vendorExtensions.x-codegen-escaped-property-name}}{{/allVars}}
-    }
-{{/vendorExtensions.x-codegen-has-escaped-property-names}}{{/additionalPropertiesType}}
-}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/swift4/model_doc.mustache b/modules/openapi-generator/src/main/resources/swift4/model_doc.mustache
deleted file mode 100644
index d3e4ecf5c76..00000000000
--- a/modules/openapi-generator/src/main/resources/swift4/model_doc.mustache
+++ /dev/null
@@ -1,11 +0,0 @@
-{{#models}}{{#model}}# {{classname}}
-
-## Properties
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-{{#vars}}**{{name}}** | {{#isPrimitiveType}}**{{{dataType}}}**{{/isPrimitiveType}}{{^isPrimitiveType}}{{^isContainer}}[**{{dataType}}**]({{complexType}}.md){{/isContainer}}{{#isContainer}}{{{dataType}}}{{/isContainer}}{{/isPrimitiveType}} | {{description}} | {{^required}}[optional] {{/required}}{{#isReadOnly}}[readonly] {{/isReadOnly}}{{#defaultValue}}[default to {{{.}}}]{{/defaultValue}}
-{{/vars}}
-
-[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
-
-{{/model}}{{/models}}
diff --git a/modules/openapi-generator/src/main/resources/swift5/Extensions.mustache b/modules/openapi-generator/src/main/resources/swift5/Extensions.mustache
index eb3fd11eb8e..9411b9f9483 100644
--- a/modules/openapi-generator/src/main/resources/swift5/Extensions.mustache
+++ b/modules/openapi-generator/src/main/resources/swift5/Extensions.mustache
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     func encodeToJSON() -> Any {
         return CodableHelper.dateFormatter.string(from: self)
     }
+}
+
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
 }{{/useVapor}}{{#generateModelAdditionalProperties}}
 
 extension String: CodingKey {
diff --git a/modules/openapi-generator/src/main/resources/swift5/modelEnum.mustache b/modules/openapi-generator/src/main/resources/swift5/modelEnum.mustache
index 2b28d7c0081..060a14ce74c 100644
--- a/modules/openapi-generator/src/main/resources/swift5/modelEnum.mustache
+++ b/modules/openapi-generator/src/main/resources/swift5/modelEnum.mustache
@@ -1,4 +1,4 @@
-{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{classname}}: {{dataType}}, {{#useVapor}}Content, Hashable{{/useVapor}}{{^useVapor}}Codable{{/useVapor}}, CaseIterable{{#enumUnknownDefaultCase}}{{#isInteger}}, CaseIterableDefaultsLast{{/isInteger}}{{#isFloat}}, CaseIterableDefaultsLast{{/isFloat}}{{#isDouble}}, CaseIterableDefaultsLast{{/isDouble}}{{#isString}}, CaseIterableDefaultsLast{{/isString}}{{/enumUnknownDefaultCase}} {
+{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{classname}}: {{dataType}}, {{#useVapor}}Content, Hashable{{/useVapor}}{{^useVapor}}Codable{{^isString}}{{^isInteger}}{{^isFloat}}{{^isDouble}}, JSONEncodable{{/isDouble}}{{/isFloat}}{{/isInteger}}{{/isString}}{{/useVapor}}, CaseIterable{{#enumUnknownDefaultCase}}{{#isInteger}}, CaseIterableDefaultsLast{{/isInteger}}{{#isFloat}}, CaseIterableDefaultsLast{{/isFloat}}{{#isDouble}}, CaseIterableDefaultsLast{{/isDouble}}{{#isString}}, CaseIterableDefaultsLast{{/isString}}{{/enumUnknownDefaultCase}} {
 {{#allowableValues}}
 {{#enumVars}}
     case {{{name}}} = {{{value}}}
diff --git a/modules/openapi-generator/src/main/resources/swift5/modelInlineEnumDeclaration.mustache b/modules/openapi-generator/src/main/resources/swift5/modelInlineEnumDeclaration.mustache
index 445f5687388..27f1e51a979 100644
--- a/modules/openapi-generator/src/main/resources/swift5/modelInlineEnumDeclaration.mustache
+++ b/modules/openapi-generator/src/main/resources/swift5/modelInlineEnumDeclaration.mustache
@@ -1,4 +1,4 @@
-    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{enumName}}: {{^isContainer}}{{dataType}}{{/isContainer}}{{#isContainer}}String{{/isContainer}}, {{#useVapor}}Content, Hashable{{/useVapor}}{{^useVapor}}Codable{{/useVapor}}, CaseIterable{{#enumUnknownDefaultCase}}{{#isInteger}}, CaseIterableDefaultsLast{{/isInteger}}{{#isFloat}}, CaseIterableDefaultsLast{{/isFloat}}{{#isDouble}}, CaseIterableDefaultsLast{{/isDouble}}{{#isString}}, CaseIterableDefaultsLast{{/isString}}{{#isContainer}}, CaseIterableDefaultsLast{{/isContainer}}{{/enumUnknownDefaultCase}} {
+    {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum {{enumName}}: {{^isContainer}}{{dataType}}{{/isContainer}}{{#isContainer}}String{{/isContainer}}, {{#useVapor}}Content, Hashable{{/useVapor}}{{^useVapor}}Codable{{^isContainer}}{{^isString}}{{^isInteger}}{{^isFloat}}{{^isDouble}}, JSONEncodable{{/isDouble}}{{/isFloat}}{{/isInteger}}{{/isString}}{{/isContainer}}{{/useVapor}}, CaseIterable{{#enumUnknownDefaultCase}}{{#isInteger}}, CaseIterableDefaultsLast{{/isInteger}}{{#isFloat}}, CaseIterableDefaultsLast{{/isFloat}}{{#isDouble}}, CaseIterableDefaultsLast{{/isDouble}}{{#isString}}, CaseIterableDefaultsLast{{/isString}}{{#isContainer}}, CaseIterableDefaultsLast{{/isContainer}}{{/enumUnknownDefaultCase}} {
         {{#allowableValues}}
         {{#enumVars}}
         case {{{name}}} = {{{value}}}
diff --git a/modules/openapi-generator/src/main/resources/swift5/modelObject.mustache b/modules/openapi-generator/src/main/resources/swift5/modelObject.mustache
index 713bc305495..a82cc1e8953 100644
--- a/modules/openapi-generator/src/main/resources/swift5/modelObject.mustache
+++ b/modules/openapi-generator/src/main/resources/swift5/modelObject.mustache
@@ -1,5 +1,5 @@
-{{^objcCompatible}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} {{#useClasses}}final class{{/useClasses}}{{^useClasses}}struct{{/useClasses}} {{{classname}}}: {{#useVapor}}Content{{/useVapor}}{{^useVapor}}Codable{{/useVapor}}{{#vendorExtensions.x-swift-hashable}}, Hashable{{/vendorExtensions.x-swift-hashable}} {
-{{/objcCompatible}}{{#objcCompatible}}@objc {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} class {{classname}}: NSObject, Codable {
+{{^objcCompatible}}{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} {{#useClasses}}final class{{/useClasses}}{{^useClasses}}struct{{/useClasses}} {{{classname}}}: {{#useVapor}}Content{{/useVapor}}{{^useVapor}}Codable, JSONEncodable{{/useVapor}}{{#vendorExtensions.x-swift-hashable}}, Hashable{{/vendorExtensions.x-swift-hashable}} {
+{{/objcCompatible}}{{#objcCompatible}}@objc {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} class {{classname}}: NSObject, Codable, JSONEncodable {
 {{/objcCompatible}}
 
 {{#allVars}}
diff --git a/modules/openapi-generator/src/main/resources/swift5/modelOneOf.mustache b/modules/openapi-generator/src/main/resources/swift5/modelOneOf.mustache
index 1c16a3955bc..277f6f26ab4 100644
--- a/modules/openapi-generator/src/main/resources/swift5/modelOneOf.mustache
+++ b/modules/openapi-generator/src/main/resources/swift5/modelOneOf.mustache
@@ -1,4 +1,4 @@
-public enum {{classname}}: {{#useVapor}}Content{{/useVapor}}{{^useVapor}}Codable{{#vendorExtensions.x-swift-hashable}}, Hashable{{/vendorExtensions.x-swift-hashable}}{{/useVapor}} {
+public enum {{classname}}: {{#useVapor}}Content{{/useVapor}}{{^useVapor}}Codable, JSONEncodable{{#vendorExtensions.x-swift-hashable}}, Hashable{{/vendorExtensions.x-swift-hashable}}{{/useVapor}} {
     {{#oneOf}}
     case type{{.}}({{.}})
     {{/oneOf}}
diff --git a/modules/openapi-generator/src/main/resources/typescript-axios/modelEnum.mustache b/modules/openapi-generator/src/main/resources/typescript-axios/modelEnum.mustache
index 5f1a5f44b6a..e18f5c09859 100644
--- a/modules/openapi-generator/src/main/resources/typescript-axios/modelEnum.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-axios/modelEnum.mustache
@@ -8,16 +8,10 @@ export type {{classname}} = {{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last
 {{/isBoolean}}
 
 {{^isBoolean}}
-export enum {{classname}} {
-{{#allowableValues}}
-{{#enumVars}}
-    {{#enumDescription}}
-    /**
-    * {{.}}
-    */
-    {{/enumDescription}}
-    {{{name}}} = {{{value}}}{{^-last}},{{/-last}}
-{{/enumVars}}
-{{/allowableValues}}
-}
+{{^stringEnums}}
+{{>modelObjectEnum}}
+{{/stringEnums}}
+{{#stringEnums}}
+{{>modelStringEnum}}
+{{/stringEnums}}
 {{/isBoolean}}
diff --git a/modules/openapi-generator/src/main/resources/typescript-axios/modelGeneric.mustache b/modules/openapi-generator/src/main/resources/typescript-axios/modelGeneric.mustache
index b64c34e2cc9..06da8db77a6 100644
--- a/modules/openapi-generator/src/main/resources/typescript-axios/modelGeneric.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-axios/modelGeneric.mustache
@@ -23,6 +23,7 @@ export interface {{classname}} {{#parent}}extends {{{.}}} {{/parent}}{
 
 {{#vars}}
 {{#isEnum}}
+{{#stringEnums}}
 /**
     * @export
     * @enum {string}
@@ -39,6 +40,23 @@ export enum {{enumName}} {
     {{/enumVars}}
 {{/allowableValues}}
 }
+{{/stringEnums}}
+{{^stringEnums}}
+export const {{enumName}} = {
+{{#allowableValues}}
+    {{#enumVars}}
+    {{#enumDescription}}
+    /**
+    * {{.}}
+    */
+    {{/enumDescription}}
+    {{{name}}}: {{{value}}}{{^-last}},{{/-last}}
+    {{/enumVars}}
+{{/allowableValues}}
+} as const;
+
+export type {{enumName}} = typeof {{enumName}}[keyof typeof {{enumName}}];
+{{/stringEnums}}
 {{/isEnum}}
 {{/vars}}
 {{/hasEnums}}
diff --git a/modules/openapi-generator/src/main/resources/typescript-axios/modelObjectEnum.mustache b/modules/openapi-generator/src/main/resources/typescript-axios/modelObjectEnum.mustache
new file mode 100644
index 00000000000..ce2c8208f37
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/typescript-axios/modelObjectEnum.mustache
@@ -0,0 +1,14 @@
+export const {{classname}} = {
+{{#allowableValues}}
+    {{#enumVars}}
+    {{#enumDescription}}
+    /**
+    * {{.}}
+    */
+    {{/enumDescription}}
+    {{{name}}}: {{{value}}}{{^-last}},{{/-last}}
+    {{/enumVars}}
+{{/allowableValues}}
+} as const;
+
+export type {{classname}} = typeof {{classname}}[keyof typeof {{classname}}];
diff --git a/modules/openapi-generator/src/main/resources/typescript-axios/modelStringEnum.mustache b/modules/openapi-generator/src/main/resources/typescript-axios/modelStringEnum.mustache
new file mode 100644
index 00000000000..c2886f750f5
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/typescript-axios/modelStringEnum.mustache
@@ -0,0 +1,12 @@
+export enum {{classname}} {
+{{#allowableValues}}
+    {{#enumVars}}
+    {{#enumDescription}}
+    /**
+    * {{.}}
+    */
+    {{/enumDescription}}
+    {{{name}}} = {{{value}}}{{^-last}},{{/-last}}
+    {{/enumVars}}
+{{/allowableValues}}
+}
diff --git a/modules/openapi-generator/src/main/resources/typescript-nestjs/api.service.mustache b/modules/openapi-generator/src/main/resources/typescript-nestjs/api.service.mustache
index b95a4fa6e0e..ddea339cf17 100644
--- a/modules/openapi-generator/src/main/resources/typescript-nestjs/api.service.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript-nestjs/api.service.mustache
@@ -72,7 +72,7 @@ export class {{classname}} {
 {{#hasQueryParams}}
         let queryParameters = {};
 {{#queryParams}}
-        {{#isListContainer}}
+        {{#isArray}}
         if ({{paramName}}) {
         {{#isCollectionFormatMulti}}
             {{paramName}}.forEach((element) => {
@@ -83,8 +83,8 @@ export class {{classname}} {
             queryParameters['{{baseName}}'] = {{paramName}}.join(COLLECTION_FORMATS['{{collectionFormat}}']);
         {{/isCollectionFormatMulti}}
         }
-        {{/isListContainer}}
-        {{^isListContainer}}
+        {{/isArray}}
+        {{^isArray}}
         if ({{paramName}} !== undefined && {{paramName}} !== null) {
         {{#isDateTime}}
             queryParameters['{{baseName}}'] = <any>{{paramName}}.toISOString();
@@ -93,22 +93,22 @@ export class {{classname}} {
             queryParameters['{{baseName}}'] = <any>{{paramName}};
         {{/isDateTime}}
         }
-        {{/isListContainer}}
+        {{/isArray}}
 {{/queryParams}}
 
 {{/hasQueryParams}}
         let headers = this.defaultHeaders;
 {{#headerParams}}
-        {{#isListContainer}}
+        {{#isArray}}
         if ({{paramName}}) {
             headers['{{baseName}}'] = {{paramName}}.join(COLLECTION_FORMATS['{{collectionFormat}}']);
         }
-        {{/isListContainer}}
-        {{^isListContainer}}
+        {{/isArray}}
+        {{^isArray}}
         if ({{paramName}} !== undefined && {{paramName}} !== null) {
             headers['{{baseName}}'] = String({{paramName}});
         }
-        {{/isListContainer}}
+        {{/isArray}}
 {{/headerParams}}
 
 {{#authMethods}}
@@ -188,7 +188,7 @@ export class {{classname}} {
         }
 {{#formParams}}
 
-        {{#isListContainer}}
+        {{#isArray}}
         if ({{paramName}}) {
         {{#isCollectionFormatMulti}}
             {{paramName}}.forEach((element) => {
@@ -199,12 +199,12 @@ export class {{classname}} {
             formParams.append('{{baseName}}', {{paramName}}.join(COLLECTION_FORMATS['{{collectionFormat}}']));
         {{/isCollectionFormatMulti}}
         }
-        {{/isListContainer}}
-        {{^isListContainer}}
+        {{/isArray}}
+        {{^isArray}}
         if ({{paramName}} !== undefined) {
             formParams.append('{{baseName}}', <any>{{paramName}});
         }
-        {{/isListContainer}}
+        {{/isArray}}
 {{/formParams}}
 
 {{/hasFormParams}}
diff --git a/modules/openapi-generator/src/main/resources/typescript/api/api.mustache b/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
index 4ccded577e4..0ca80559310 100644
--- a/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
@@ -1,7 +1,7 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi{{extensionForDeno}}';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi{{extensionForDeno}}';
 import {Configuration} from '../configuration{{extensionForDeno}}';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http{{extensionForDeno}}';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http{{extensionForDeno}}';
 {{#platforms}}
 {{#node}}
 import * as FormData from "form-data";
@@ -11,6 +11,7 @@ import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer{{extensionForDeno}}';
 import {ApiException} from './exception{{extensionForDeno}}';
 import {canConsumeForm, isCodeInRange} from '../util{{extensionForDeno}}';
+import {SecurityAuthentication} from '../auth/auth';
 
 {{#useInversify}}
 import { injectable } from "inversify";
@@ -151,15 +152,22 @@ export class {{classname}}RequestFactory extends BaseAPIRequestFactory {
         {{/bodyParam}}
 
         {{#hasAuthMethods}}
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         {{/hasAuthMethods}}
         {{#authMethods}}
         // Apply auth methods
         authMethod = _config.authMethods["{{name}}"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
         {{/authMethods}}
+        
+        {{^useInversify}}
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
+        {{/useInversify}}
 
         return requestContext;
     }
diff --git a/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache b/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache
index bfb303e741e..09ff0ca2bb9 100644
--- a/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/auth/auth.mustache
@@ -107,6 +107,9 @@ export class {{#lambda.pascalcase}}{{name}}{{/lambda.pascalcase}}Authentication
 {{/authMethods}}
 
 export type AuthMethods = {
+    {{^useInversify}}
+    "default"?: SecurityAuthentication,
+    {{/useInversify}}
     {{#authMethods}}
     "{{name}}"?: SecurityAuthentication{{^-last}},{{/-last}}
     {{/authMethods}}
@@ -114,6 +117,9 @@ export type AuthMethods = {
 {{#useInversify}}
 
 export const authMethodServices = {
+    {{^useInversify}}
+    "default"?: SecurityAuthentication,
+    {{/useInversify}}
     {{#authMethods}}
     "{{name}}": {{#lambda.pascalcase}}{{name}}{{/lambda.pascalcase}}Authentication{{^-last}},{{/-last}}
     {{/authMethods}}
@@ -126,6 +132,9 @@ export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
 export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
+    {{^useInversify}}
+    "default"?: SecurityAuthentication,
+    {{/useInversify}}
     {{#authMethods}}
     "{{name}}"?: {{#isApiKey}}ApiKeyConfiguration{{/isApiKey}}{{#isBasicBasic}}HttpBasicConfiguration{{/isBasicBasic}}{{#isBasicBearer}}HttpBearerConfiguration{{/isBasicBearer}}{{#isOAuth}}OAuth2Configuration{{/isOAuth}}{{^-last}},{{/-last}}
     {{/authMethods}}
@@ -141,6 +150,9 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
     if (!config) {
         return authMethods;
     }
+    {{^useInversify}}
+    authMethods["default"] = config["default"]
+    {{/useInversify}}
 
     {{#authMethods}}
     if (config["{{name}}"]) {
diff --git a/modules/openapi-generator/src/main/resources/typescript/http/http.mustache b/modules/openapi-generator/src/main/resources/typescript/http/http.mustache
index 2f71d86109f..2f66d4b8996 100644
--- a/modules/openapi-generator/src/main/resources/typescript/http/http.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/http/http.mustache
@@ -3,6 +3,8 @@
 // TODO: evaluate if we can easily get rid of this library
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
+import * as http from 'http';
+import * as https from 'https';
 {{/node}}
 {{/platforms}}
 {{#platforms}}
@@ -113,6 +115,11 @@ export class RequestContext {
     private headers: { [key: string]: string } = {};
     private body: RequestBody = undefined;
     private url: URLParse;
+    {{#platforms}}
+    {{#node}}
+    private agent: http.Agent | https.Agent | undefined = undefined;
+    {{/node}}
+    {{/platforms}}
 
     /**
      * Creates the request context using a http method and request resource url
@@ -185,6 +192,18 @@ export class RequestContext {
     public setHeaderParam(key: string, value: string): void  {
         this.headers[key] = value;
     }
+    {{#platforms}}
+    {{#node}}
+    
+    public setAgent(agent: http.Agent | https.Agent) {
+        this.agent = agent;
+    }
+
+    public getAgent(): http.Agent | https.Agent | undefined {
+        return this.agent;
+    }
+    {{/node}}
+    {{/platforms}}
 }
 
 export interface ResponseBody {
diff --git a/modules/openapi-generator/src/main/resources/typescript/http/isomorphic-fetch.mustache b/modules/openapi-generator/src/main/resources/typescript/http/isomorphic-fetch.mustache
index 7646836694b..57b1ae594f6 100644
--- a/modules/openapi-generator/src/main/resources/typescript/http/isomorphic-fetch.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/http/isomorphic-fetch.mustache
@@ -20,6 +20,9 @@ export class IsomorphicFetchHttpLibrary implements HttpLibrary {
             body: body as any,
             headers: request.getHeaders(),
             {{#platforms}}
+            {{#node}}
+            agent: request.getAgent(),
+            {{/node}}
             {{#browser}}
             credentials: "same-origin"
             {{/browser}}
diff --git a/modules/openapi-generator/src/main/resources/typescript/types/ObjectParamAPI.mustache b/modules/openapi-generator/src/main/resources/typescript/types/ObjectParamAPI.mustache
index d44164bd019..9a639033718 100644
--- a/modules/openapi-generator/src/main/resources/typescript/types/ObjectParamAPI.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/types/ObjectParamAPI.mustache
@@ -47,7 +47,7 @@ export class Object{{classname}} {
      {{/summary}}
      * @param param the request object
      */
-    public {{nickname}}(param: {{classname}}{{operationIdCamelCase}}Request, options?: Configuration): {{#useRxJS}}Observable{{/useRxJS}}{{^useRxJS}}Promise{{/useRxJS}}<{{{returnType}}}{{^returnType}}void{{/returnType}}> {
+    public {{nickname}}(param: {{classname}}{{operationIdCamelCase}}Request{{^hasRequiredParams}} = {}{{/hasRequiredParams}}, options?: Configuration): {{#useRxJS}}Observable{{/useRxJS}}{{^useRxJS}}Promise{{/useRxJS}}<{{{returnType}}}{{^returnType}}void{{/returnType}}> {
         return this.api.{{nickname}}({{#allParams}}param.{{paramName}}, {{/allParams}} options){{^useRxJS}}.toPromise(){{/useRxJS}};
     }
 
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java
index 54a2b0d2053..4e9fcd6397b 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java
@@ -56,6 +56,16 @@ import static org.testng.Assert.*;
 
 public class DefaultCodegenTest {
 
+    @Test
+    public void testDeeplyNestedAdditionalPropertiesImports() {
+        final DefaultCodegen codegen = new DefaultCodegen();
+        final OpenAPI openApi = TestUtils.parseFlattenSpec("src/test/resources/3_0/additional-properties-deeply-nested.yaml");
+        codegen.setOpenAPI(openApi);
+        PathItem path = openApi.getPaths().get("/ping");
+        CodegenOperation operation = codegen.fromOperation("/ping", "post", path.getPost(), path.getServers());
+        Assert.assertEquals(Sets.intersection(operation.imports, Sets.newHashSet("Person")).size(), 1);
+    }
+
     @Test
     public void testHasBodyParameter() {
         final Schema refSchema = new Schema<>().$ref("#/components/schemas/Pet");
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/TestUtils.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/TestUtils.java
index 7c7ee64361d..337f0c73a82 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/TestUtils.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/TestUtils.java
@@ -5,8 +5,9 @@ import static org.testng.Assert.fail;
 import static org.testng.Assert.assertTrue;
 import static org.testng.Assert.assertFalse;
 
-import com.github.javaparser.ParseProblemException;
-import com.github.javaparser.StaticJavaParser;
+import com.github.javaparser.JavaParser;
+import com.github.javaparser.ParserConfiguration;
+import com.github.javaparser.ParseResult;
 import com.github.javaparser.ast.CompilationUnit;
 import io.swagger.parser.OpenAPIParser;
 import io.swagger.v3.oas.models.Components;
@@ -150,13 +151,11 @@ public class TestUtils {
     }
 
     public static void assertValidJavaSourceCode(String javaSourceCode, String filename) {
-        try {
-            CompilationUnit compilation = StaticJavaParser.parse(javaSourceCode);
-            assertTrue(compilation.getTypes().size() > 0, "File: " + filename);
-        }
-        catch (ParseProblemException ex) {
-            fail("Java parse problem: " + filename, ex);
-        }
+        ParserConfiguration config = new ParserConfiguration();
+        config.setLanguageLevel(ParserConfiguration.LanguageLevel.JAVA_11);
+        JavaParser parser = new JavaParser(config);
+        ParseResult<CompilationUnit> parseResult = parser.parse(javaSourceCode);
+        assertTrue(parseResult.isSuccessful(), String.valueOf(parseResult.getProblems()));
     }
 
     public static void assertFileContains(Path path, String... lines) {
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java
index ccb5ac4caf0..13160dc8cda 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java
@@ -56,9 +56,9 @@ public class AbstractJavaCodegenTest {
     }
 
     @Test
-    public void toModelNameShouldUseProvidedMapping() throws Exception {
+    public void toModelNameShouldNotUseProvidedMapping() throws Exception {
         fakeJavaCodegen.importMapping().put("json_myclass", "com.test.MyClass");
-        Assert.assertEquals(fakeJavaCodegen.toModelName("json_myclass"), "com.test.MyClass");
+        Assert.assertEquals(fakeJavaCodegen.toModelName("json_myclass"), "JsonMyclass");
     }
 
     @Test
@@ -350,6 +350,24 @@ public class AbstractJavaCodegenTest {
         Assert.assertEquals(codegen.modelTestFileFolder(), "/User/open.api.tools/test.folder/org/openapitools/codegen/model".replace('/', File.separatorChar));
     }
 
+    @Test
+    public void apiTestFileFolderDirect() {
+        final AbstractJavaCodegen codegen = new P_AbstractJavaCodegen();
+        codegen.setOutputTestFolder("/User/open.api.tools");
+        codegen.setTestFolder("test.folder");
+        codegen.setApiPackage("org.openapitools.codegen.api");
+        Assert.assertEquals(codegen.apiTestFileFolder(), "/User/open.api.tools/test.folder/org/openapitools/codegen/api".replace('/', File.separatorChar));
+    }
+
+    @Test
+    public void modelTestFileFolderDirect() {
+        final AbstractJavaCodegen codegen = new P_AbstractJavaCodegen();
+        codegen.setOutputTestFolder("/User/open.api.tools");
+        codegen.setTestFolder("test.folder");
+        codegen.setModelPackage("org.openapitools.codegen.model");
+        Assert.assertEquals(codegen.modelTestFileFolder(), "/User/open.api.tools/test.folder/org/openapitools/codegen/model".replace('/', File.separatorChar));
+    }
+
     @Test
     public void modelFileFolder() {
         final AbstractJavaCodegen codegen = new P_AbstractJavaCodegen();
@@ -583,7 +601,7 @@ public class AbstractJavaCodegenTest {
         codegen.setOpenAPI(new OpenAPI().components(new Components().addSchemas("MyStringType", new StringSchema())));
         Schema<?> schema = new ArraySchema().items(new Schema().$ref("#/components/schemas/MyStringType"));
         String defaultValue = codegen.getTypeDeclaration(schema);
-        Assert.assertEquals(defaultValue, "List<com.example.foo>");
+        Assert.assertEquals(defaultValue, "List<MyStringType>");
     }
 
     @Test
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
index 2e25fa70a24..47b490e46ef 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/JavaClientCodegenTest.java
@@ -56,6 +56,7 @@ import org.openapitools.codegen.config.CodegenConfigurator;
 import org.openapitools.codegen.languages.AbstractJavaCodegen;
 import org.openapitools.codegen.languages.JavaClientCodegen;
 import org.testng.Assert;
+import org.testng.annotations.Ignore;
 import org.testng.annotations.Test;
 
 import com.google.common.collect.ImmutableMap;
@@ -469,7 +470,7 @@ public class JavaClientCodegenTest {
         generator.setGeneratorPropertyDefault(CodegenConstants.APIS, "true");
         List<File> files = generator.opts(clientOptInput).generate();
 
-        Assert.assertEquals(files.size(), 156);
+        Assert.assertEquals(files.size(), 162);
         validateJavaSourceFiles(files);
 
         TestUtils.assertFileContains(Paths.get(output + "/src/main/java/xyz/abcdef/model/Dog.java"),
@@ -584,6 +585,8 @@ public class JavaClientCodegenTest {
         generator.setGenerateMetadata(false);
         List<File> files = generator.opts(clientOptInput).generate();
 
+        validateJavaSourceFiles(files);
+
         Assert.assertEquals(files.size(), 1);
         files.forEach(File::deleteOnExit);
     }
@@ -677,6 +680,8 @@ public class JavaClientCodegenTest {
         List<File> files = generator.opts(clientOptInput).generate();
         files.forEach(File::deleteOnExit);
 
+        validateJavaSourceFiles(files);
+
         Assert.assertEquals(files.size(), 1);
         TestUtils.ensureContainsFile(files, output, "src/main/java/org/openapitools/client/model/ParentType.java");
 
@@ -694,7 +699,7 @@ public class JavaClientCodegenTest {
 
         // this is the type of the field 'typeAlias'. With a working importMapping it should
         // be 'foo.bar.TypeAlias' or just 'TypeAlias'
-        Assert.assertEquals(fieldMatcher.group(1), "foo.bar.TypeAlias");
+        Assert.assertEquals(fieldMatcher.group(1), "TypeAlias");
     }
 
     @Test
@@ -890,8 +895,13 @@ public class JavaClientCodegenTest {
 
     /**
      * See https://github.com/OpenAPITools/openapi-generator/issues/4803
+     *
+     * UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+     * We will contact the contributor of the following test to see if the fix will break their use cases and
+     * how we can fix it accordingly.
      */
     @Test
+    @Ignore
     public void testRestTemplateFormMultipart() throws IOException {
 
         Map<String, Object> properties = new HashMap<>();
@@ -914,6 +924,7 @@ public class JavaClientCodegenTest {
         List<File> files = generator.opts(configurator.toClientOptInput()).generate();
         files.forEach(File::deleteOnExit);
 
+        validateJavaSourceFiles(files);
 
         Path defaultApi = Paths.get(output + "/src/main/java/xyz/abcdef/api/MultipartApi.java");
         TestUtils.assertFileContains(defaultApi,
@@ -933,8 +944,13 @@ public class JavaClientCodegenTest {
 
     /**
      * See https://github.com/OpenAPITools/openapi-generator/issues/4803
+     *
+     * UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+     * We will contact the contributor of the following test to see if the fix will break their use cases and
+     * how we can fix it accordingly. 
      */
     @Test
+    @Ignore
     public void testWebClientFormMultipart() throws IOException {
 
         Map<String, Object> properties = new HashMap<>();
@@ -957,6 +973,7 @@ public class JavaClientCodegenTest {
         List<File> files = generator.opts(configurator.toClientOptInput()).generate();
         files.forEach(File::deleteOnExit);
 
+        validateJavaSourceFiles(files);
 
         Path defaultApi = Paths.get(output + "/src/main/java/xyz/abcdef/api/MultipartApi.java");
         TestUtils.assertFileContains(defaultApi,
@@ -1005,8 +1022,13 @@ public class JavaClientCodegenTest {
 
     /**
      * See https://github.com/OpenAPITools/openapi-generator/issues/6715
+     *
+     * UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+     * We will contact the contributor of the following test to see if the fix will break their use cases and
+     * how we can fix it accordingly.
      */
     @Test
+    @Ignore
     public void testRestTemplateWithUseAbstractionForFiles() throws IOException {
 
         Map<String, Object> properties = new HashMap<>();
@@ -1030,6 +1052,7 @@ public class JavaClientCodegenTest {
         List<File> files = generator.opts(configurator.toClientOptInput()).generate();
         files.forEach(File::deleteOnExit);
 
+        validateJavaSourceFiles(files);
 
         Path defaultApi = Paths.get(output + "/src/main/java/xyz/abcdef/api/MultipartApi.java");
         TestUtils.assertFileContains(defaultApi,
@@ -1129,8 +1152,13 @@ public class JavaClientCodegenTest {
 
     /**
      * See https://github.com/OpenAPITools/openapi-generator/issues/6715
+     *
+     * UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+     * We will contact the contributor of the following test to see if the fix will break their use cases and
+     * how we can fix it accordingly.
      */
     @Test
+    @Ignore
     public void testWebClientWithUseAbstractionForFiles() throws IOException {
 
         Map<String, Object> properties = new HashMap<>();
@@ -1138,7 +1166,6 @@ public class JavaClientCodegenTest {
         properties.put(CodegenConstants.API_PACKAGE, "xyz.abcdef.api");
         properties.put(JavaClientCodegen.USE_ABSTRACTION_FOR_FILES, true);
 
-
         File output = Files.createTempDirectory("test").toFile();
         output.deleteOnExit();
 
@@ -1154,6 +1181,7 @@ public class JavaClientCodegenTest {
         List<File> files = generator.opts(configurator.toClientOptInput()).generate();
         files.forEach(File::deleteOnExit);
 
+        validateJavaSourceFiles(files);
 
         Path defaultApi = Paths.get(output + "/src/main/java/xyz/abcdef/api/MultipartApi.java");
         TestUtils.assertFileContains(defaultApi,
@@ -1170,7 +1198,7 @@ public class JavaClientCodegenTest {
                 "formParams.add(\"file\", file);"
         );
     }
-    
+
     /**
      * See https://github.com/OpenAPITools/openapi-generator/issues/8352
      */
@@ -1225,7 +1253,39 @@ public class JavaClientCodegenTest {
                 .generate();
         files.forEach(File::deleteOnExit);
 
+        validateJavaSourceFiles(files);
+
         final Path defaultApi = Paths.get(output + "/src/main/java/xyz/abcdef/ApiClient.java");
         TestUtils.assertFileContains(defaultApi, "value instanceof Map");
     }
+
+    /**
+     * See https://github.com/OpenAPITools/openapi-generator/issues/11242
+     */
+    @Test
+    public void testNativeClientWhiteSpacePathParamEncoding() throws IOException {
+        Map<String, Object> properties = new HashMap<>();
+        properties.put(JavaClientCodegen.JAVA8_MODE, true);
+        properties.put(CodegenConstants.API_PACKAGE, "xyz.abcdef.api");
+
+        File output = Files.createTempDirectory("test").toFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+                .setGeneratorName("java")
+                .setLibrary(JavaClientCodegen.NATIVE)
+                .setAdditionalProperties(properties)
+                .setInputSpec("src/test/resources/3_0/issue11242.yaml")
+                .setOutputDir(output.getAbsolutePath().replace("\\", "/"));
+
+        final ClientOptInput clientOptInput = configurator.toClientOptInput();
+        DefaultGenerator generator = new DefaultGenerator();
+        List<File> files = generator.opts(clientOptInput).generate();
+
+        Assert.assertEquals(files.size(), 34);
+        validateJavaSourceFiles(files);
+
+        TestUtils.assertFileContains(Paths.get(output + "/src/main/java/xyz/abcdef/ApiClient.java"),
+                "public static String urlEncode(String s) { return URLEncoder.encode(s, UTF_8).replaceAll(\"\\\\+\", \"%20\"); }");
+    }
 }
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/jaxrs/JavaJerseyServerCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/jaxrs/JavaJerseyServerCodegenTest.java
index bb7fb2d9313..f9e148b5e7c 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/jaxrs/JavaJerseyServerCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/jaxrs/JavaJerseyServerCodegenTest.java
@@ -115,23 +115,25 @@ public class JavaJerseyServerCodegenTest extends JavaJaxrsBaseTest {
     // almost same test as issue #3139 on Spring
     @Test
     public void testMultipartJerseyServer() throws Exception {
-
         final Map<String, File> files = generateFiles(codegen, "src/test/resources/3_0/form-multipart-binary-array.yaml");
 
         // Check files for Single, Mixed
         String[] fileS = {
                                "MultipartSingleApi.java", "MultipartSingleApiService.java", "MultipartSingleApiServiceImpl.java",
                                "MultipartMixedApi.java",  "MultipartMixedApiService.java",  "MultipartMixedApiServiceImpl.java"    };
-        for (String f : fileS){
-            assertFileContains( files.get(f).toPath(), "FormDataBodyPart file" );
-        }
+
+        // UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+        // We will contact the contributor of the following test to see if the fix will break their use cases and
+        // how we can fix it accordingly.
+        //for (String f : fileS){
+        //    assertFileContains( files.get(f).toPath(), "FormDataBodyPart file" );
+        //}
 
         // Check files for Array
         final String[] fileA = { "MultipartArrayApiService.java", "MultipartArrayApi.java", "MultipartArrayApiServiceImpl.java"};
         for (String f : fileA) {
             assertFileContains( files.get(f).toPath(), "List<FormDataBodyPart> files");
         }
-
     }
 
 }
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/AbstractMicronautCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/AbstractMicronautCodegenTest.java
new file mode 100644
index 00000000000..2241771ef6a
--- /dev/null
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/AbstractMicronautCodegenTest.java
@@ -0,0 +1,125 @@
+package org.openapitools.codegen.java.micronaut;
+
+import io.swagger.parser.OpenAPIParser;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.parser.core.models.ParseOptions;
+import org.openapitools.codegen.ClientOptInput;
+import org.openapitools.codegen.CodegenConstants;
+import org.openapitools.codegen.DefaultGenerator;
+import org.openapitools.codegen.languages.JavaMicronautAbstractCodegen;
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.regex.Pattern;
+
+import static org.testng.Assert.*;
+
+
+/**
+ * An abstract class with methods useful for testing
+ */
+public abstract class AbstractMicronautCodegenTest {
+    /**
+     * Path to a common test configuration file
+     */
+    protected final String PETSTORE_PATH = "src/test/resources/petstore.json";
+
+    /**
+     *
+     * @param codegen - the code generator
+     * @param configPath - the path to the config starting from src/test/resources
+     * @param filesToGenerate - which files to generate - can be CodegenConstants.MODELS, APIS, SUPPORTING_FILES, ...
+     * @return - the path to the generated folder
+     */
+    protected String generateFiles(JavaMicronautAbstractCodegen codegen, String configPath, String... filesToGenerate) {
+        File output = null;
+        try {
+            output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        } catch (IOException e) {
+            fail("Unable to create temporary directory for output");
+        }
+        output.deleteOnExit();
+
+        // Create parser
+        String outputPath = output.getAbsolutePath().replace('\\', '/');
+        OpenAPI openAPI = new OpenAPIParser()
+                .readLocation(configPath, null, new ParseOptions()).getOpenAPI();
+
+        // Configure codegen
+        codegen.setOutputDir(outputPath);
+
+        // Create input
+        ClientOptInput input = new ClientOptInput();
+        input.openAPI(openAPI);
+        input.config(codegen);
+
+        // Generate
+        DefaultGenerator generator = new DefaultGenerator();
+        // by default nothing is generated
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODELS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_TESTS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_DOCS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.APIS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.API_TESTS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.API_DOCS, "false");
+        generator.setGeneratorPropertyDefault(CodegenConstants.SUPPORTING_FILES, "false");
+        // set all the files user wants to generate
+        for (String files: filesToGenerate) {
+            generator.setGeneratorPropertyDefault(files, "true");
+        }
+
+        generator.opts(input).generate();
+
+        return outputPath + "/";
+    }
+
+    public static void assertFileContainsRegex(String path, String... regex) {
+        String file = readFile(path);
+        for (String line: regex)
+            assertTrue(Pattern.compile(line.replace(" ", "\\s+")).matcher(file).find());
+    }
+
+    public static void assertFileNotContainsRegex(String path, String... regex) {
+        String file = readFile(path);
+        for (String line: regex)
+            assertFalse(Pattern.compile(line.replace(" ", "\\s+")).matcher(file).find());
+    }
+
+    public static void assertFileContains(String path, String... lines) {
+        String file = linearize(readFile(path));
+        for (String line : lines)
+            assertTrue(file.contains(linearize(line)), "File does not contain line [" + line + "]");
+    }
+
+    public static void assertFileNotContains(String path, String... lines) {
+        String file = linearize(readFile(path));
+        for (String line : lines)
+            assertFalse(file.contains(linearize(line)), "File contains line [" + line + "]");
+    }
+
+    public static void assertFileExists(String path) {
+        assertTrue(Paths.get(path).toFile().exists(), "File \"" + path + "\" should exist");
+    }
+
+    public static void assertFileNotExists(String path) {
+        assertFalse(Paths.get(path).toFile().exists(), "File \"" + path + "\" should not exist");
+    }
+
+    public static String readFile(String path) {
+        String file = null;
+        try {
+            file = new String(Files.readAllBytes(Paths.get(path)), StandardCharsets.UTF_8);
+            assertNotNull(file, "File \"" + path + "\" does not exist");
+        } catch (IOException e) {
+            fail("Unable to evaluate file " + path);
+        }
+
+        return file;
+    }
+
+    public static String linearize(String target) {
+        return target.replaceAll("\r?\n", "").replaceAll("\\s+", "\\s");
+    }
+}
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautClientCodegenTest.java
index 452d38f05ec..103ae98ab1c 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautClientCodegenTest.java
@@ -1,31 +1,18 @@
 package org.openapitools.codegen.java.micronaut;
 
-import io.swagger.parser.OpenAPIParser;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.info.Info;
 import io.swagger.v3.oas.models.servers.Server;
-import io.swagger.v3.parser.core.models.ParseOptions;
 import org.openapitools.codegen.CliOption;
-import org.openapitools.codegen.ClientOptInput;
 import org.openapitools.codegen.CodegenConstants;
-import org.openapitools.codegen.DefaultGenerator;
 import org.openapitools.codegen.languages.JavaMicronautClientCodegen;
 import org.testng.Assert;
 import org.testng.annotations.Test;
-
-import java.io.File;
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Paths;
-
 import static java.util.stream.Collectors.groupingBy;
 import static org.testng.Assert.*;
-import static org.testng.Assert.fail;
 
-public class MicronautClientCodegenTest {
-    private final String PETSTORE_PATH = "src/test/resources/petstore.json";
 
+public class MicronautClientCodegenTest extends AbstractMicronautCodegenTest {
     @Test
     public void clientOptsUnicity() {
         JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
@@ -55,6 +42,31 @@ public class MicronautClientCodegenTest {
         Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.INVOKER_PACKAGE), "org.openapitools");
     }
 
+    @Test
+    public void testApiAndModelFilesPresent() {
+        JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.INVOKER_PACKAGE, "org.test.test");
+        codegen.additionalProperties().put(CodegenConstants.MODEL_PACKAGE, "org.test.test.model");
+        codegen.additionalProperties().put(CodegenConstants.API_PACKAGE, "org.test.test.api");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.SUPPORTING_FILES,
+                CodegenConstants.APIS,
+                CodegenConstants.MODELS);
+
+        String apiFolder = outputPath + "src/main/java/org/test/test/api/";
+        assertFileExists(apiFolder + "PetApi.java");
+        assertFileExists(apiFolder + "StoreApi.java");
+        assertFileExists(apiFolder + "UserApi.java");
+
+        String modelFolder = outputPath + "src/main/java/org/test/test/model/";
+        assertFileExists(modelFolder + "Pet.java");
+        assertFileExists(modelFolder + "User.java");
+        assertFileExists(modelFolder + "Order.java");
+
+        String resources = outputPath + "src/main/resources/";
+        assertFileExists(resources + "application.yml");
+    }
+
     @Test
     public void doConfigureAuthParam() {
         JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
@@ -85,7 +97,7 @@ public class MicronautClientCodegenTest {
     @Test
     public void doUseValidationParam() {
         JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
-        codegen.additionalProperties().put(JavaMicronautClientCodegen.OPT_CONFIGURE_AUTH, "false");
+        codegen.additionalProperties().put(JavaMicronautClientCodegen.USE_BEANVALIDATION, "true");
         String outputPath = generateFiles(codegen, PETSTORE_PATH,
                 CodegenConstants.APIS);
 
@@ -94,6 +106,18 @@ public class MicronautClientCodegenTest {
         assertFileContains(outputPath + "/src/main/java/org/openapitools/api/PetApi.java", "@NotNull");
     }
 
+    @Test
+    public void doNotUseValidationParam() {
+        JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
+        codegen.additionalProperties().put(JavaMicronautClientCodegen.USE_BEANVALIDATION, "false");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.APIS);
+
+        // Files are not generated
+        assertFileNotContains(outputPath + "/src/main/java/org/openapitools/api/PetApi.java", "@Valid");
+        assertFileNotContains(outputPath + "/src/main/java/org/openapitools/api/PetApi.java", "@NotNull");
+    }
+
     @Test
     public void doGenerateForMaven() {
         JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
@@ -162,89 +186,33 @@ public class MicronautClientCodegenTest {
         assertFileContains(outputPath + "src/test/groovy/org/openapitools/api/PetApiSpec.groovy", "PetApiSpec", "@MicronautTest");
     }
 
-    /**
-     *
-     * @param codegen - the code generator
-     * @param configPath - the path to the config starting from src/test/resources
-     * @param filesToGenerate - which files to generate - can be CodegenConstants.MODELS, APIS, SUPPORTING_FILES, ...
-     * @return - the path to the generated folder
-     */
-    protected String generateFiles(JavaMicronautClientCodegen codegen, String configPath, String... filesToGenerate) {
-        File output = null;
-        try {
-            output = Files.createTempDirectory("test").toFile().getCanonicalFile();
-        } catch (IOException e) {
-            fail("Unable to create temporary directory for output");
-        }
-        output.deleteOnExit();
+    @Test
+    public void doGenerateRequiredPropertiesInConstructor() {
+        JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
+        codegen.additionalProperties().put(JavaMicronautClientCodegen.OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR, "true");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH, CodegenConstants.MODELS, CodegenConstants.APIS);
 
-        // Create parser
-        String outputPath = output.getAbsolutePath().replace('\\', '/');
-        OpenAPI openAPI = new OpenAPIParser()
-                .readLocation(configPath, null, new ParseOptions()).getOpenAPI();
-
-        // Configure codegen
-        codegen.setOutputDir(outputPath);
-
-        // Create input
-        ClientOptInput input = new ClientOptInput();
-        input.openAPI(openAPI);
-        input.config(codegen);
-
-        // Generate
-        DefaultGenerator generator = new DefaultGenerator();
-        // by default nothing is generated
-        generator.setGeneratorPropertyDefault(CodegenConstants.MODELS, "false");
-        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_TESTS, "false");
-        generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_DOCS, "false");
-        generator.setGeneratorPropertyDefault(CodegenConstants.APIS, "false");
-        generator.setGeneratorPropertyDefault(CodegenConstants.API_TESTS, "false");
-        generator.setGeneratorPropertyDefault(CodegenConstants.API_DOCS, "false");
-        generator.setGeneratorPropertyDefault(CodegenConstants.SUPPORTING_FILES, "false");
-        // set all the files user wants to generate
-        for (String files: filesToGenerate) {
-            generator.setGeneratorPropertyDefault(files, "true");
-        }
-
-        generator.opts(input).generate();
-
-        return outputPath + "/";
+        // Constructor should have properties
+        String modelPath = outputPath + "src/main/java/org/openapitools/model/";
+        assertFileContains(modelPath + "Pet.java", "public Pet(String name, List<String> photoUrls)");
+        assertFileNotContains(modelPath + "Pet.java", "public Pet()");
+        assertFileContains(modelPath + "User.java", "public User()");
+        assertFileContains(modelPath + "Order.java", "public Order()");
     }
 
-    public static void assertFileContains(String path, String... lines) {
-        String file = readFile(path);
-        for (String line : lines)
-            assertTrue(file.contains(linearize(line)), "File does not contain line [" + line + "]");
-    }
+    @Test
+    public void doNotGenerateRequiredPropertiesInConstructor() {
+        JavaMicronautClientCodegen codegen = new JavaMicronautClientCodegen();
+        codegen.additionalProperties().put(JavaMicronautClientCodegen.OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR, "false");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH, CodegenConstants.MODELS, CodegenConstants.APIS);
 
-    public static void assertFileNotContains(String path, String... lines) {
-        String file = readFile(path);
-        for (String line : lines)
-            assertFalse(file.contains(linearize(line)), "File contains line [" + line + "]");
-    }
-
-    public static void assertFileExists(String path) {
-        assertTrue(Paths.get(path).toFile().exists(), "File \"" + path + "\" should exist");
-    }
-
-    public static void assertFileNotExists(String path) {
-        assertFalse(Paths.get(path).toFile().exists(), "File \"" + path + "\" should not exist");
-    }
-
-    public static String readFile(String path) {
-        String file = null;
-        try {
-            String generatedFile = new String(Files.readAllBytes(Paths.get(path)), StandardCharsets.UTF_8);
-            file = linearize(generatedFile);
-            assertNotNull(file);
-        } catch (IOException e) {
-            fail("Unable to evaluate file " + path);
-        }
-
-        return file;
-    }
-
-    public static String linearize(String target) {
-        return target.replaceAll("\r?\n", "").replaceAll("\\s+", "\\s");
+        // Constructor should have properties
+        String modelPath = outputPath + "src/main/java/org/openapitools/model/";
+        assertFileContains(modelPath + "Pet.java", "public Pet()");
+        assertFileNotContainsRegex(modelPath + "Pet.java", "public Pet\\([^)]+\\)");
+        assertFileContains(modelPath + "User.java", "public User()");
+        assertFileNotContainsRegex(modelPath + "User.java", "public User\\([^)]+\\)");
+        assertFileContains(modelPath + "Order.java", "public Order()");
+        assertFileNotContainsRegex(modelPath + "Order.java", "public Order\\([^)]+\\)");
     }
 }
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautServerCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautServerCodegenTest.java
new file mode 100644
index 00000000000..d10d250aabc
--- /dev/null
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/micronaut/MicronautServerCodegenTest.java
@@ -0,0 +1,195 @@
+package org.openapitools.codegen.java.micronaut;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.servers.Server;
+import org.openapitools.codegen.CliOption;
+import org.openapitools.codegen.CodegenConstants;
+import org.openapitools.codegen.languages.JavaMicronautServerCodegen;
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import static java.util.stream.Collectors.groupingBy;
+import static org.testng.Assert.assertEquals;
+
+public class MicronautServerCodegenTest extends AbstractMicronautCodegenTest {
+    @Test
+    public void clientOptsUnicity() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.cliOptions()
+                .stream()
+                .collect(groupingBy(CliOption::getOpt))
+                .forEach((k, v) -> assertEquals(v.size(), 1, k + " is described multiple times"));
+    }
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.processOpts();
+
+        OpenAPI openAPI = new OpenAPI();
+        openAPI.addServersItem(new Server().url("https://one.com/v2"));
+        openAPI.setInfo(new Info());
+        codegen.preprocessOpenAPI(openAPI);
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+        Assert.assertEquals(codegen.modelPackage(), "org.openapitools.model");
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.MODEL_PACKAGE), "org.openapitools.model");
+        Assert.assertEquals(codegen.apiPackage(), "org.openapitools.controller");
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.API_PACKAGE), "org.openapitools.controller");
+        Assert.assertEquals(codegen.additionalProperties().get(JavaMicronautServerCodegen.OPT_CONTROLLER_PACKAGE), "org.openapitools.controller");
+        Assert.assertEquals(codegen.getInvokerPackage(), "org.openapitools");
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.INVOKER_PACKAGE), "org.openapitools");
+    }
+
+    @Test
+    public void testApiAndModelFilesPresent() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(CodegenConstants.INVOKER_PACKAGE, "org.test.test");
+        codegen.additionalProperties().put(CodegenConstants.MODEL_PACKAGE, "org.test.test.model");
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_CONTROLLER_PACKAGE, "org.test.test.controller");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.SUPPORTING_FILES,
+                CodegenConstants.APIS,
+                CodegenConstants.MODELS);
+
+        String invokerFolder = outputPath + "src/main/java/org/test/test/";
+        assertFileExists(invokerFolder + "Application.java");
+
+        String controllerFolder = outputPath + "src/main/java/org/test/test/controller/";
+        assertFileExists(controllerFolder + "PetController.java");
+        assertFileExists(controllerFolder + "StoreController.java");
+        assertFileExists(controllerFolder + "UserController.java");
+
+        String modelFolder = outputPath + "src/main/java/org/test/test/model/";
+        assertFileExists(modelFolder + "Pet.java");
+        assertFileExists(modelFolder + "User.java");
+        assertFileExists(modelFolder + "Order.java");
+
+        String resources = outputPath + "src/main/resources/";
+        assertFileExists(resources + "application.yml");
+    }
+
+    @Test
+    public void doUseValidationParam() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.USE_BEANVALIDATION, "true");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.APIS);
+
+        // Files are not generated
+        assertFileContains(outputPath + "/src/main/java/org/openapitools/controller/PetController.java", "@Valid");
+        assertFileContains(outputPath + "/src/main/java/org/openapitools/controller/PetController.java", "@NotNull");
+    }
+
+    @Test
+    public void doNotUseValidationParam() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.USE_BEANVALIDATION, "false");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.APIS);
+
+        // Files are not generated
+        assertFileNotContains(outputPath + "/src/main/java/org/openapitools/controller/PetController.java", "@Valid");
+        assertFileNotContains(outputPath + "/src/main/java/org/openapitools/controller/PetController.java", "@NotNull");
+    }
+
+    @Test
+    public void doGenerateForMaven() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_BUILD,
+                JavaMicronautServerCodegen.OPT_BUILD_MAVEN);
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.SUPPORTING_FILES);
+
+        // Files are not generated
+        assertFileExists(outputPath + "/pom.xml");
+        assertFileNotExists(outputPath + "/build.gradle");
+    }
+
+    @Test
+    public void doGenerateForGradle() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_BUILD,
+                JavaMicronautServerCodegen.OPT_BUILD_GRADLE);
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.SUPPORTING_FILES);
+
+        // Files are not generated
+        assertFileExists(outputPath + "/build.gradle");
+        assertFileNotExists(outputPath + "/pom.xml");
+    }
+
+    @Test
+    public void doGenerateForTestJUnit() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_BUILD,
+                JavaMicronautServerCodegen.OPT_BUILD_ALL);
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_TEST,
+                JavaMicronautServerCodegen.OPT_TEST_JUNIT);
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.SUPPORTING_FILES,
+                CodegenConstants.API_TESTS, CodegenConstants.APIS, CodegenConstants.MODELS);
+
+        // Files are not generated
+        assertFileContains(outputPath + "build.gradle", "testRuntime(\"junit");
+        assertFileContains(outputPath + "pom.xml", "<artifactId>micronaut-test-junit");
+        assertFileNotContains(outputPath + "build.gradle", "testRuntime(\"spock");
+        assertFileNotContains(outputPath + "pom.xml", "<artifactId>micronaut-test-spock");
+        assertFileExists(outputPath + "src/test/java/");
+        assertFileExists(outputPath + "src/test/java/org/openapitools/controller/PetControllerTest.java");
+        assertFileContains(outputPath + "src/test/java/org/openapitools/controller/PetControllerTest.java", "PetControllerTest", "@MicronautTest");
+    }
+
+    @Test
+    public void doGenerateForTestSpock() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_BUILD,
+                JavaMicronautServerCodegen.OPT_BUILD_ALL);
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_TEST,
+                JavaMicronautServerCodegen.OPT_TEST_SPOCK);
+        String outputPath = generateFiles(codegen, PETSTORE_PATH,
+                CodegenConstants.SUPPORTING_FILES,
+                CodegenConstants.API_TESTS, CodegenConstants.APIS, CodegenConstants.MODELS);
+
+        // Files are not generated
+        assertFileNotContains(outputPath + "build.gradle", "testRuntime(\"junit");
+        assertFileNotContains(outputPath + "pom.xml", "<artifactId>micronaut-test-junit");
+        assertFileContains(outputPath + "build.gradle", "testRuntime(\"spock");
+        assertFileContains(outputPath + "pom.xml", "<artifactId>micronaut-test-spock");
+        assertFileExists(outputPath + "src/test/groovy");
+        assertFileExists(outputPath + "src/test/groovy/org/openapitools/controller/PetControllerSpec.groovy");
+        assertFileContains(outputPath + "src/test/groovy/org/openapitools/controller/PetControllerSpec.groovy", "PetControllerSpec", "@MicronautTest");
+    }
+
+    @Test
+    public void doGenerateRequiredPropertiesInConstructor() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR, "true");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH, CodegenConstants.MODELS, CodegenConstants.APIS);
+
+        // Constructor should have properties
+        String modelPath = outputPath + "src/main/java/org/openapitools/model/";
+        assertFileContains(modelPath + "Pet.java", "public Pet(String name, List<String> photoUrls)");
+        assertFileNotContains(modelPath + "Pet.java", "public Pet()");
+        assertFileContains(modelPath + "User.java", "public User()");
+        assertFileContains(modelPath + "Order.java", "public Order()");
+    }
+
+    @Test
+    public void doNotGenerateRequiredPropertiesInConstructor() {
+        JavaMicronautServerCodegen codegen = new JavaMicronautServerCodegen();
+        codegen.additionalProperties().put(JavaMicronautServerCodegen.OPT_REQUIRED_PROPERTIES_IN_CONSTRUCTOR, "false");
+        String outputPath = generateFiles(codegen, PETSTORE_PATH, CodegenConstants.MODELS, CodegenConstants.APIS);
+
+        // Constructor should have properties
+        String modelPath = outputPath + "src/main/java/org/openapitools/model/";
+        assertFileContains(modelPath + "Pet.java", "public Pet()");
+        assertFileNotContainsRegex(modelPath + "Pet.java", "public Pet\\([^)]+\\)");
+        assertFileContains(modelPath + "User.java", "public User()");
+        assertFileNotContainsRegex(modelPath + "User.java", "public User\\([^)]+\\)");
+        assertFileContains(modelPath + "Order.java", "public Order()");
+        assertFileNotContainsRegex(modelPath + "Order.java", "public Order\\([^)]+\\)");
+    }
+}
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java
index a1d9b8ce858..456dea2f400 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/spring/SpringCodegenTest.java
@@ -28,6 +28,7 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.languages.SpringCodegen;
 import org.openapitools.codegen.languages.features.CXFServerFeatures;
 import org.testng.Assert;
+import org.testng.annotations.Ignore;
 import org.testng.annotations.Test;
 
 import java.io.File;
@@ -42,6 +43,7 @@ import static java.util.stream.Collectors.groupingBy;
 import static org.openapitools.codegen.TestUtils.assertFileContains;
 import static org.openapitools.codegen.TestUtils.assertFileNotContains;
 import static org.openapitools.codegen.languages.SpringCodegen.RESPONSE_WRAPPER;
+import static org.openapitools.codegen.languages.features.DocumentationProviderFeatures.DOCUMENTATION_PROVIDER;
 import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.fail;
 
@@ -80,14 +82,17 @@ public class SpringCodegenTest {
         generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_DOCS, "false");
         generator.setGeneratorPropertyDefault(CodegenConstants.APIS, "true");
         generator.setGeneratorPropertyDefault(CodegenConstants.SUPPORTING_FILES, "false");
-
         generator.opts(input).generate();
 
         assertFileContains(Paths.get(outputPath + "/src/main/java/org/openapitools/api/ZebrasApi.java"),
-                "AnimalParams");
+            "AnimalParams");
+
         assertFileContains(Paths.get(outputPath + "/src/main/java/org/openapitools/model/AnimalParams.java"),
-                "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)",
-                "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)");
+            "@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)", "@DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)");
+
+        assertFileContains(Paths.get(outputPath + "/src/main/java/org/openapitools/model/AnimalParams.java"),
+            "import org.springframework.format.annotation.DateTimeFormat;"
+        );
     }
 
     @Test
@@ -206,7 +211,6 @@ public class SpringCodegenTest {
         input.config(codegen);
 
         DefaultGenerator generator = new DefaultGenerator();
-
         generator.setGeneratorPropertyDefault(CodegenConstants.MODELS, "false");
         generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_TESTS, "false");
         generator.setGeneratorPropertyDefault(CodegenConstants.MODEL_DOCS, "false");
@@ -216,11 +220,19 @@ public class SpringCodegenTest {
 
         assertFileContains(
                 Paths.get(outputPath + "/src/main/java/org/openapitools/api/ElephantsApi.java"),
-                "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)"
+                "import org.springframework.format.annotation.DateTimeFormat;"
+        );
+        assertFileContains(
+                Paths.get(outputPath + "/src/main/java/org/openapitools/api/ElephantsApi.java"),
+                "@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)"
         );
         assertFileContains(
                 Paths.get(outputPath + "/src/main/java/org/openapitools/api/ZebrasApi.java"),
-                "@org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)"
+                "import org.springframework.format.annotation.DateTimeFormat;"
+        );
+        assertFileContains(
+                Paths.get(outputPath + "/src/main/java/org/openapitools/api/ZebrasApi.java"),
+                "@DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)"
         );
     }
 
@@ -475,6 +487,7 @@ public class SpringCodegenTest {
         final SpringCodegen codegen = new SpringCodegen();
         codegen.setLibrary("spring-boot");
         codegen.setDelegatePattern(true);
+        codegen.additionalProperties().put(DOCUMENTATION_PROVIDER, "springfox");
 
         final Map<String, File> files = generateFiles(codegen, "src/test/resources/3_0/form-multipart-binary-array.yaml");
 
@@ -488,9 +501,12 @@ public class SpringCodegenTest {
                 "@ApiParam(value = \"Many files\")",
                 "@RequestPart(value = \"files\", required = false)");
 
-        // Check that the delegate handles the single file
-        final File multipartSingleApiDelegate = files.get("MultipartSingleApiDelegate.java");
-        assertFileContains(multipartSingleApiDelegate.toPath(), "MultipartFile file");
+        // UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+        // We will contact the contributor of the following test to see if the fix will break their use cases and
+        // how we can fix it accordingly.
+        //// Check that the delegate handles the single file
+        // final File multipartSingleApiDelegate = files.get("MultipartSingleApiDelegate.java");
+        // assertFileContains(multipartSingleApiDelegate.toPath(), "MultipartFile file");
 
         // Check that the api handles the single file
         final File multipartSingleApi = files.get("MultipartSingleApi.java");
@@ -525,7 +541,13 @@ public class SpringCodegenTest {
         return files.stream().collect(Collectors.toMap(e -> e.getName().replace(outputPath, ""), i -> i));
     }
 
+    /*
+     * UPDATE: the following test has been ignored due to https://github.com/OpenAPITools/openapi-generator/pull/11081/
+     * We will contact the contributor of the following test to see if the fix will break their use cases and
+     * how we can fix it accordingly.
+     */
     @Test
+    @Ignore
     public void testMultipartCloud() throws IOException {
         final SpringCodegen codegen = new SpringCodegen();
         codegen.setLibrary("spring-cloud");
@@ -667,6 +689,7 @@ public class SpringCodegenTest {
         SpringCodegen codegen = new SpringCodegen();
         codegen.setOutputDir(output.getAbsolutePath());
         codegen.additionalProperties().put(CXFServerFeatures.LOAD_TEST_DATA_FROM_FILE, "true");
+        codegen.additionalProperties().put(DOCUMENTATION_PROVIDER, "springfox");
 
         ClientOptInput input = new ClientOptInput();
         input.openAPI(openAPI);
@@ -764,4 +787,23 @@ public class SpringCodegenTest {
             fail("OpenAPIDocumentationConfig.java not generated");
         }
     }
+
+    @Test
+    public void testTypeMappings() {
+        final SpringCodegen codegen = new SpringCodegen();
+        codegen.processOpts();
+        Assert.assertEquals(codegen.typeMapping().get("file"), "Resource");
+    }
+
+    @Test
+    public void testImportMappings() {
+        final SpringCodegen codegen = new SpringCodegen();
+        codegen.processOpts();
+        Assert.assertEquals(codegen.importMapping().get("Resource"), "org.springframework.core.io.Resource");
+        Assert.assertEquals(codegen.importMapping().get("Pageable"), "org.springframework.data.domain.Pageable");
+        Assert.assertEquals(codegen.importMapping().get("DateTimeFormat"), "org.springframework.format.annotation.DateTimeFormat");
+        Assert.assertEquals(codegen.importMapping().get("ApiIgnore"), "springfox.documentation.annotations.ApiIgnore");
+        Assert.assertEquals(codegen.importMapping().get("ParameterObject"), "org.springdoc.api.annotations.ParameterObject");
+    }
+
 }
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/kotlin/KotlinReservedWordsTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/kotlin/KotlinReservedWordsTest.java
index 914ed814da8..bd06fde5f2a 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/kotlin/KotlinReservedWordsTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/kotlin/KotlinReservedWordsTest.java
@@ -10,8 +10,13 @@ import org.openapitools.codegen.utils.StringUtils;
 import org.testng.annotations.DataProvider;
 import org.testng.annotations.Test;
 
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.HashSet;
 
+import static org.openapitools.codegen.TestUtils.assertFileContains;
+import static org.openapitools.codegen.TestUtils.assertFileNotContains;
 import static org.testng.Assert.assertEquals;
 
 @SuppressWarnings("rawtypes")
@@ -51,7 +56,8 @@ public class KotlinReservedWordsTest {
                 {"while"},
                 {"open"},
                 {"external"},
-                {"internal"}
+                {"internal"},
+                {"value"}
         };
     }
 
@@ -128,4 +134,32 @@ public class KotlinReservedWordsTest {
         assertEquals(property.baseName, reservedWord);
     }
 
+    @Test
+    public void reservedWordsInGeneratedCode() throws Exception {
+        String baseApiPackage = "/org/openapitools/client/apis/";
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile(); //may be move to /build
+        OpenAPI openAPI = TestUtils.parseFlattenSpec("src/test/resources/bugs/issue_11304_kotlin_backticks_reserved_words.yaml");
+
+        KotlinClientCodegen codegen = new KotlinClientCodegen();
+        codegen.setOutputDir(output.getAbsolutePath());
+
+        ClientOptInput input = new ClientOptInput();
+        input.openAPI(openAPI);
+        input.config(codegen);
+
+        DefaultGenerator generator = new DefaultGenerator();
+        generator.opts(input).generate();
+
+        File resultSourcePath = new File(output, "src/main/kotlin");
+
+        assertFileContains(Paths.get(resultSourcePath.getAbsolutePath() + baseApiPackage + "DefaultApi.kt"),
+               "fun test(`value`: kotlin.String) : Unit {",
+               "fun testWithHttpInfo(`value`: kotlin.String) : ApiResponse<Unit?> {",
+               "fun testRequestConfig(`value`: kotlin.String) : RequestConfig<Unit> {"
+        );
+
+        assertFileNotContains(Paths.get(resultSourcePath.getAbsolutePath() + baseApiPackage + "DefaultApi.kt"),
+                "&#x60;"
+        );
+    }
 }
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/languages/features/DocumentationProviderFeaturesTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/languages/features/DocumentationProviderFeaturesTest.java
new file mode 100644
index 00000000000..0954e79fb3a
--- /dev/null
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/languages/features/DocumentationProviderFeaturesTest.java
@@ -0,0 +1,50 @@
+package org.openapitools.codegen.languages.features;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+import java.util.stream.Collectors;
+import org.openapitools.codegen.languages.features.DocumentationProviderFeatures.AnnotationLibrary;
+import org.openapitools.codegen.languages.features.DocumentationProviderFeatures.DocumentationProvider;
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+// Tests are not final, methods currently just generate documentation as MD tables.
+public class DocumentationProviderFeaturesTest {
+
+  @Test(priority = 0)
+  void generateDocumentationProviderTable() {
+    List<DocumentationProvider> providers = Arrays.asList(DocumentationProvider.values());
+    StringBuilder sb = new StringBuilder();
+    sb.append("### DocumentationProvider\n");
+    sb.append("|Cli Option|Description|Property Name|Preferred Annotation Library|Supported Annotation Libraries|\n");
+    sb.append("|----------|-----------|-------------|----------------------------|------------------------------|\n");
+    providers.forEach(dp -> sb.append(String.format(Locale.ROOT, "|**%s**|%s|`%s`|%s|%s|\n",
+        dp.toCliOptValue(),
+        dp.getDescription(),
+        dp.getPropertyName(),
+        dp.getPreferredAnnotationLibrary().toCliOptValue(),
+        dp.supportedAnnotationLibraries().stream()
+            .map(AnnotationLibrary::toCliOptValue)
+            .collect(Collectors.joining(", "))
+    )));
+    sb.append("\n");
+    Assert.assertTrue(sb.toString().contains("none"));
+  }
+
+  @Test(priority = 1)
+  void generateAnnotationLibraryTable() {
+    List<AnnotationLibrary> libraries = Arrays.asList(AnnotationLibrary.values());
+    StringBuilder sb = new StringBuilder();
+    sb.append("### AnnotationLibrary\n");
+    sb.append("|Cli Option|Description|Property Name|\n");
+    sb.append("|----------|-----------|-----------|\n");
+    libraries.forEach(dp -> sb.append(String.format(Locale.ROOT, "|**%s**|%s|`%s`|\n",
+        dp.toCliOptValue(),
+        dp.getDescription(),
+        dp.getPropertyName()
+    )));
+    Assert.assertTrue(sb.toString().contains("none"));
+    sb.append("\n");
+  }
+}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonLegacyClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonLegacyClientCodegenTest.java
index d3bff53a8ea..72dbdda27ab 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonLegacyClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonLegacyClientCodegenTest.java
@@ -91,6 +91,9 @@ public class PythonLegacyClientCodegenTest {
         Assert.assertEquals(op.allParams.get(4).pattern, "/^pattern\\/\\d{3}$/");
         // pattern_with_modifiers '/^pattern\d{3}$/i
         Assert.assertEquals(op.allParams.get(5).pattern, "/^pattern\\d{3}$/i");
+        // pattern_with_backslash_after_bracket '/^[\pattern\d{3}$/i'
+        // added to test fix for issue #6675
+        Assert.assertEquals(op.allParams.get(6).pattern, "/^[\\pattern\\d{3}$/i");
     }
 
 
diff --git a/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/TypeScriptClientCodegenTest.java b/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/TypeScriptClientCodegenTest.java
index 350af16ebb8..55c7b3b5efa 100644
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/TypeScriptClientCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/typescript/TypeScriptClientCodegenTest.java
@@ -1,7 +1,10 @@
 package org.openapitools.codegen.typescript;
 
+import com.google.common.collect.Sets;
 import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.PathItem;
 import io.swagger.v3.oas.models.media.*;
+import org.openapitools.codegen.CodegenOperation;
 import org.openapitools.codegen.TestUtils;
 import org.openapitools.codegen.languages.TypeScriptClientCodegen;
 import org.openapitools.codegen.utils.ModelUtils;
@@ -41,4 +44,14 @@ public class TypeScriptClientCodegenTest {
         Assert.assertEquals(codegen.getTypeDeclaration(parentSchema), "{ [key: string]: Child; }");
     }
 
+    @Test
+    public void testComposedSchemasImportTypesIndividually() {
+        final TypeScriptClientCodegen codegen = new TypeScriptClientCodegen();
+        final OpenAPI openApi = TestUtils.parseFlattenSpec("src/test/resources/3_0/composed-schemas.yaml");
+        codegen.setOpenAPI(openApi);
+        PathItem path = openApi.getPaths().get("/pets");
+        CodegenOperation operation = codegen.fromOperation("/pets", "patch", path.getPatch(), path.getServers());
+        Assert.assertEquals(operation.imports, Sets.newHashSet("Cat", "Dog"));
+    }
+
 }
diff --git a/modules/openapi-generator/src/test/resources/3_0/additional-properties-deeply-nested.yaml b/modules/openapi-generator/src/test/resources/3_0/additional-properties-deeply-nested.yaml
new file mode 100644
index 00000000000..78d9c95b54a
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/3_0/additional-properties-deeply-nested.yaml
@@ -0,0 +1,32 @@
+openapi: 3.0.1
+info:
+  title: Test additional properties with ref
+  version: '1.0'
+servers:
+  - url: 'http://localhost:8000/'
+paths:
+  /ping:
+    post:
+      operationId: pingGet
+      responses:
+        default:
+          description: default response
+          content:
+            application/json:
+              schema:
+                type: object
+                additionalProperties:
+                  type: object
+                  additionalProperties:
+                    type: object
+                    additionalProperties:
+                      "$ref": "#/components/schemas/Person"
+components:
+  schemas:
+    Person:
+      type: object
+      properties:
+        lastName:
+          type: string
+        firstName:
+          type: string
\ No newline at end of file
diff --git a/modules/openapi-generator/src/test/resources/3_0/issue11242.yaml b/modules/openapi-generator/src/test/resources/3_0/issue11242.yaml
new file mode 100644
index 00000000000..ee27ec7f33b
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/3_0/issue11242.yaml
@@ -0,0 +1,37 @@
+openapi: 3.0.3
+info:
+  title: Issue 11242 - Path Param encoding
+  description: "White space encoding in path parameters"
+  version: "1.0.0"
+servers:
+  - url: localhost:8080
+paths:
+  /api/{someParam}:
+    parameters:
+      - in: path
+        name: someParam
+        schema:
+          type: string
+        required: true
+        description: Some parameter.
+    get:
+      operationId: GetSomeParam
+      summary: View some param
+      responses:
+        '200':
+          description: Some return value
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/SomeReturnValue'
+              example:
+                someParam: someValue
+components:
+  schemas:
+    SomeReturnValue:
+      type: object
+      required:
+        - someParam
+      properties:
+        someParam:
+          type: string
diff --git a/modules/openapi-generator/src/test/resources/3_0/issue_1517.yaml b/modules/openapi-generator/src/test/resources/3_0/issue_1517.yaml
index 038a637608f..788b46a6dd5 100644
--- a/modules/openapi-generator/src/test/resources/3_0/issue_1517.yaml
+++ b/modules/openapi-generator/src/test/resources/3_0/issue_1517.yaml
@@ -45,6 +45,11 @@ paths:
           schema:
             type: string
             pattern: '/^pattern\d{3}$/i'
+        - name: pattern_with_backslash_after_bracket
+          in: header
+          schema:
+            type: string
+            pattern: '/^[\pattern\d{3}$/i'
 
       responses:
         '200':
diff --git a/modules/openapi-generator/src/test/resources/3_0/issue_7199_array_simple_string.yaml b/modules/openapi-generator/src/test/resources/3_0/issue_7199_array_simple_string.yaml
new file mode 100644
index 00000000000..db0ee3463c3
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/3_0/issue_7199_array_simple_string.yaml
@@ -0,0 +1,19 @@
+openapi: 3.0.0
+info:
+  version: 1.0.0
+  title: Demo
+paths:
+  '/{ids}':
+    get:
+      parameters:
+        - name: ids
+          in: path
+          required: true
+          schema:
+            type: array
+            items:
+              type: string
+          style: simple
+      responses:
+        200:
+          description: Successful operation
diff --git a/modules/openapi-generator/src/test/resources/3_0/kotlin/reserved_words.yaml b/modules/openapi-generator/src/test/resources/3_0/kotlin/reserved_words.yaml
index 881ffe49499..d5074fd953c 100644
--- a/modules/openapi-generator/src/test/resources/3_0/kotlin/reserved_words.yaml
+++ b/modules/openapi-generator/src/test/resources/3_0/kotlin/reserved_words.yaml
@@ -108,6 +108,10 @@ paths:
           in: header
           schema:
             type: string
+        - name: value
+          in: header
+          schema:
+            type: string
         - name: var
           in: header
           schema:
@@ -192,6 +196,8 @@ components:
           type: string
         val:
           type: string
+        value:
+          type: string
         var:
           type: string
         when:
@@ -261,6 +267,8 @@ components:
           $ref: '#/components/schemas/typeof'
         val:
           $ref: '#/components/schemas/val'
+        value:
+          $ref: '#/components/schemas/value'
         var:
           $ref: '#/components/schemas/var'
         when:
@@ -473,6 +481,14 @@ components:
           type: integer
           format: int64
 
+    value:
+      title: Testing reserved word 'value'
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+
     var:
       title: Testing reserved word 'var'
       type: object
diff --git a/modules/openapi-generator/src/test/resources/3_0/python-experimental/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml b/modules/openapi-generator/src/test/resources/3_0/python-experimental/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
new file mode 100644
index 00000000000..7fcdb42c7b3
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/3_0/python-experimental/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
@@ -0,0 +1,2684 @@
+openapi: 3.0.0
+info:
+  description: >-
+    This spec is mainly for testing Petstore server and contains fake endpoints,
+    models. Please do not use this for any other purpose. Special characters: "
+    \
+  version: 1.0.0
+  title: OpenAPI Petstore
+  license:
+    name: Apache-2.0
+    url: 'https://www.apache.org/licenses/LICENSE-2.0.html'
+tags:
+  - name: pet
+    description: Everything about your Pets
+  - name: store
+    description: Access to Petstore orders
+  - name: user
+    description: Operations about user
+paths:
+  /foo:
+    get:
+      responses:
+        default:
+          description: response
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  string:
+                    $ref: '#/components/schemas/Foo'
+  /pet:
+    servers:
+      - url: 'http://petstore.swagger.io/v2'
+      - url: 'http://path-server-test.petstore.local/v2'
+    post:
+      tags:
+        - pet
+      summary: Add a new pet to the store
+      description: Add a new pet to the store
+      operationId: addPet
+      responses:
+        '200':
+          description: Ok
+        '405':
+          description: Invalid input
+      security:
+        - http_signature_test: []
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+      requestBody:
+        $ref: '#/components/requestBodies/Pet'
+    put:
+      tags:
+        - pet
+      summary: Update an existing pet
+      description: ''
+      operationId: updatePet
+      responses:
+        '400':
+          description: Invalid ID supplied
+        '404':
+          description: Pet not found
+        '405':
+          description: Validation exception
+      security:
+        - http_signature_test: []
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+      requestBody:
+        $ref: '#/components/requestBodies/Pet'
+  /pet/findByStatus:
+    get:
+      tags:
+        - pet
+      summary: Finds Pets by status
+      description: Multiple status values can be provided with comma separated strings
+      operationId: findPetsByStatus
+      parameters:
+        - name: status
+          in: query
+          description: Status values that need to be considered for filter
+          required: true
+          style: form
+          explode: false
+          schema:
+            type: array
+            items:
+              type: string
+              enum:
+                - available
+                - pending
+                - sold
+              default: available
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/xml:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Pet'
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Pet'
+        '400':
+          description: Invalid status value
+      security:
+        - http_signature_test: []
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+  /pet/findByTags:
+    get:
+      tags:
+        - pet
+      summary: Finds Pets by tags
+      description: >-
+        Multiple tags can be provided with comma separated strings. Use tag1,
+        tag2, tag3 for testing.
+      operationId: findPetsByTags
+      parameters:
+        - name: tags
+          in: query
+          description: Tags to filter by
+          required: true
+          style: form
+          explode: false
+          schema:
+            type: array
+            items:
+              type: string
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/xml:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Pet'
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/Pet'
+        '400':
+          description: Invalid tag value
+      security:
+        - http_signature_test: []
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+      deprecated: true
+  '/pet/{petId}':
+    get:
+      tags:
+        - pet
+      summary: Find pet by ID
+      description: Returns a single pet
+      operationId: getPetById
+      parameters:
+        - name: petId
+          in: path
+          description: ID of pet to return
+          required: true
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Pet'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Pet'
+        '400':
+          description: Invalid ID supplied
+        '404':
+          description: Pet not found
+      security:
+        - api_key: []
+    post:
+      tags:
+        - pet
+      summary: Updates a pet in the store with form data
+      description: ''
+      operationId: updatePetWithForm
+      parameters:
+        - name: petId
+          in: path
+          description: ID of pet that needs to be updated
+          required: true
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '405':
+          description: Invalid input
+      security:
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                name:
+                  description: Updated name of the pet
+                  type: string
+                status:
+                  description: Updated status of the pet
+                  type: string
+    delete:
+      tags:
+        - pet
+      summary: Deletes a pet
+      description: ''
+      operationId: deletePet
+      parameters:
+        - name: api_key
+          in: header
+          required: false
+          schema:
+            type: string
+        - name: petId
+          in: path
+          description: Pet id to delete
+          required: true
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '400':
+          description: Invalid pet value
+      security:
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+  '/pet/{petId}/uploadImage':
+    post:
+      tags:
+        - pet
+      summary: uploads an image
+      description: ''
+      operationId: uploadImage
+      parameters:
+        - name: petId
+          in: path
+          description: ID of pet to update
+          required: true
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponse'
+      security:
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                additionalMetadata:
+                  description: Additional data to pass to server
+                  type: string
+                file:
+                  description: file to upload
+                  type: string
+                  format: binary
+  /store/inventory:
+    get:
+      tags:
+        - store
+      summary: Returns pet inventories by status
+      description: Returns a map of status codes to quantities
+      operationId: getInventory
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                type: object
+                additionalProperties:
+                  type: integer
+                  format: int32
+      security:
+        - api_key: []
+  /store/order:
+    post:
+      tags:
+        - store
+      summary: Place an order for a pet
+      description: ''
+      operationId: placeOrder
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Order'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Order'
+        '400':
+          description: Invalid Order
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Order'
+        description: order placed for purchasing the pet
+        required: true
+  '/store/order/{order_id}':
+    get:
+      tags:
+        - store
+      summary: Find purchase order by ID
+      description: >-
+        For valid response try integer IDs with value <= 5 or > 10. Other values
+        will generated exceptions
+      operationId: getOrderById
+      parameters:
+        - name: order_id
+          in: path
+          description: ID of pet that needs to be fetched
+          required: true
+          schema:
+            type: integer
+            format: int64
+            minimum: 1
+            maximum: 5
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Order'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Order'
+        '400':
+          description: Invalid ID supplied
+        '404':
+          description: Order not found
+    delete:
+      tags:
+        - store
+      summary: Delete purchase order by ID
+      description: >-
+        For valid response try integer IDs with value < 1000. Anything above
+        1000 or nonintegers will generate API errors
+      operationId: deleteOrder
+      parameters:
+        - name: order_id
+          in: path
+          description: ID of the order that needs to be deleted
+          required: true
+          schema:
+            type: string
+      responses:
+        '400':
+          description: Invalid ID supplied
+        '404':
+          description: Order not found
+  /user:
+    post:
+      tags:
+        - user
+      summary: Create user
+      description: This can only be done by the logged in user.
+      operationId: createUser
+      responses:
+        default:
+          description: successful operation
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/User'
+        description: Created user object
+        required: true
+  /user/createWithArray:
+    post:
+      tags:
+        - user
+      summary: Creates list of users with given input array
+      description: ''
+      operationId: createUsersWithArrayInput
+      responses:
+        default:
+          description: successful operation
+      requestBody:
+        $ref: '#/components/requestBodies/UserArray'
+  /user/createWithList:
+    post:
+      tags:
+        - user
+      summary: Creates list of users with given input array
+      description: ''
+      operationId: createUsersWithListInput
+      responses:
+        default:
+          description: successful operation
+      requestBody:
+        $ref: '#/components/requestBodies/UserArray'
+  /user/login:
+    get:
+      tags:
+        - user
+      summary: Logs user into the system
+      description: ''
+      operationId: loginUser
+      parameters:
+        - name: username
+          in: query
+          description: The user name for login
+          required: true
+          schema:
+            type: string
+        - name: password
+          in: query
+          description: The password for login in clear text
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: successful operation
+          headers:
+            X-Rate-Limit:
+              description: calls per hour allowed by the user
+              schema:
+                type: integer
+                format: int32
+            X-Expires-After:
+              description: date in UTC when token expires
+              schema:
+                type: string
+                format: date-time
+          content:
+            application/xml:
+              schema:
+                type: string
+            application/json:
+              schema:
+                type: string
+        '400':
+          description: Invalid username/password supplied
+  /user/logout:
+    get:
+      tags:
+        - user
+      summary: Logs out current logged in user session
+      description: ''
+      operationId: logoutUser
+      responses:
+        default:
+          description: successful operation
+  '/user/{username}':
+    get:
+      tags:
+        - user
+      summary: Get user by user name
+      description: ''
+      operationId: getUserByName
+      parameters:
+        - name: username
+          in: path
+          description: The name that needs to be fetched. Use user1 for testing.
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/User'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/User'
+        '400':
+          description: Invalid username supplied
+        '404':
+          description: User not found
+    put:
+      tags:
+        - user
+      summary: Updated user
+      description: This can only be done by the logged in user.
+      operationId: updateUser
+      parameters:
+        - name: username
+          in: path
+          description: name that need to be deleted
+          required: true
+          schema:
+            type: string
+      responses:
+        '400':
+          description: Invalid user supplied
+        '404':
+          description: User not found
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/User'
+        description: Updated user object
+        required: true
+    delete:
+      tags:
+        - user
+      summary: Delete user
+      description: This can only be done by the logged in user.
+      operationId: deleteUser
+      parameters:
+        - name: username
+          in: path
+          description: The name that needs to be deleted
+          required: true
+          schema:
+            type: string
+      responses:
+        '400':
+          description: Invalid username supplied
+        '404':
+          description: User not found
+  /fake_classname_test:
+    patch:
+      tags:
+        - 'fake_classname_tags 123#$%^'
+      summary: To test class name in snake case
+      description: To test class name in snake case
+      operationId: Classname
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Client'
+      security:
+        - api_key_query: []
+      requestBody:
+        $ref: '#/components/requestBodies/Client'
+  /fake:
+    patch:
+      tags:
+        - fake
+      summary: To test "client" model
+      description: To test "client" model
+      operationId: ClientModel
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Client'
+      requestBody:
+        $ref: '#/components/requestBodies/Client'
+    get:
+      tags:
+        - fake
+      summary: To test enum parameters
+      description: To test enum parameters
+      operationId: EnumParameters
+      parameters:
+        - name: enum_header_string_array
+          in: header
+          description: Header parameter enum test (string array)
+          schema:
+            type: array
+            items:
+              type: string
+              default: $
+              enum:
+                - '>'
+                - $
+        - name: enum_header_string
+          in: header
+          description: Header parameter enum test (string)
+          schema:
+            type: string
+            enum:
+              - _abc
+              - '-efg'
+              - (xyz)
+            default: '-efg'
+        - name: enum_query_string_array
+          in: query
+          description: Query parameter enum test (string array)
+          schema:
+            type: array
+            items:
+              type: string
+              default: $
+              enum:
+                - '>'
+                - $
+        - name: enum_query_string
+          in: query
+          description: Query parameter enum test (string)
+          schema:
+            type: string
+            enum:
+              - _abc
+              - '-efg'
+              - (xyz)
+            default: '-efg'
+        - name: enum_query_integer
+          in: query
+          description: Query parameter enum test (double)
+          schema:
+            type: integer
+            format: int32
+            enum:
+              - 1
+              - -2
+        - name: enum_query_double
+          in: query
+          description: Query parameter enum test (double)
+          schema:
+            type: number
+            format: double
+            enum:
+              - 1.1
+              - -1.2
+      responses:
+        '400':
+          description: Invalid request
+        '404':
+          description: Not found
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                enum_form_string_array:
+                  description: Form parameter enum test (string array)
+                  type: array
+                  items:
+                    type: string
+                    default: $
+                    enum:
+                      - '>'
+                      - $
+                enum_form_string:
+                  description: Form parameter enum test (string)
+                  type: string
+                  enum:
+                    - _abc
+                    - '-efg'
+                    - (xyz)
+                  default: '-efg'
+    post:
+      tags:
+        - fake
+      summary: |
+        Fake endpoint for testing various parameters
+        假端點
+        偽のエンドポイント
+        가짜 엔드 포인트
+      description: |
+        Fake endpoint for testing various parameters
+        假端點
+        偽のエンドポイント
+        가짜 엔드 포인트
+      operationId: EndpointParameters
+      responses:
+        '400':
+          description: Invalid username supplied
+        '404':
+          description: User not found
+      security:
+        - http_basic_test: []
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                integer:
+                  description: None
+                  type: integer
+                  minimum: 10
+                  maximum: 100
+                int32:
+                  description: None
+                  type: integer
+                  format: int32
+                  minimum: 20
+                  maximum: 200
+                int64:
+                  description: None
+                  type: integer
+                  format: int64
+                number:
+                  description: None
+                  type: number
+                  minimum: 32.1
+                  maximum: 543.2
+                float:
+                  description: None
+                  type: number
+                  format: float
+                  maximum: 987.6
+                double:
+                  description: None
+                  type: number
+                  format: double
+                  minimum: 67.8
+                  maximum: 123.4
+                string:
+                  description: None
+                  type: string
+                  pattern: '/[a-z]/i'
+                pattern_without_delimiter:
+                  description: None
+                  type: string
+                  pattern: '^[A-Z].*'
+                byte:
+                  description: None
+                  type: string
+                  format: byte
+                binary:
+                  description: None
+                  type: string
+                  format: binary
+                date:
+                  description: None
+                  type: string
+                  format: date
+                dateTime:
+                  description: None
+                  type: string
+                  format: date-time
+                  default: '2010-02-01T10:20:10.11111+01:00'
+                  example: '2020-02-02T20:20:20.22222Z'
+                password:
+                  description: None
+                  type: string
+                  format: password
+                  minLength: 10
+                  maxLength: 64
+                callback:
+                  description: None
+                  type: string
+              required:
+                - number
+                - double
+                - pattern_without_delimiter
+                - byte
+    delete:
+      tags:
+        - fake
+      security:
+        - bearer_test: []
+      summary: Fake endpoint to test group parameters (optional)
+      description: Fake endpoint to test group parameters (optional)
+      operationId: GroupParameters
+      x-group-parameters: true
+      parameters:
+        - name: required_string_group
+          in: query
+          description: Required String in group parameters
+          required: true
+          schema:
+            type: integer
+        - name: required_boolean_group
+          in: header
+          description: Required Boolean in group parameters
+          required: true
+          schema:
+            type: boolean
+        - name: required_int64_group
+          in: query
+          description: Required Integer in group parameters
+          required: true
+          schema:
+            type: integer
+            format: int64
+        - name: string_group
+          in: query
+          description: String in group parameters
+          schema:
+            type: integer
+        - name: boolean_group
+          in: header
+          description: Boolean in group parameters
+          schema:
+            type: boolean
+        - name: int64_group
+          in: query
+          description: Integer in group parameters
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '400':
+          description: Someting wrong
+  /fake/refs/number:
+    post:
+      tags:
+        - fake
+      description: Test serialization of outer number types
+      operationId: NumberWithValidations
+      requestBody:
+        description: Input number as post body
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/NumberWithValidations'
+        required: false
+      responses:
+        '200':
+          description: Output number
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/NumberWithValidations'
+  /fake/refs/mammal:
+    post:
+      tags:
+        - fake
+      description: Test serialization of mammals
+      operationId: Mammal
+      requestBody:
+        description: Input mammal
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/mammal'
+        required: true
+      responses:
+        '200':
+          description: Output mammal
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/mammal'
+  /fake/refs/string:
+    post:
+      tags:
+        - fake
+      description: Test serialization of outer string types
+      operationId: String
+      requestBody:
+        description: Input string as post body
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/String'
+        required: false
+      responses:
+        '200':
+          description: Output string
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/String'
+      x-codegen-request-body-name: body
+  /fake/refs/boolean:
+    post:
+      tags:
+        - fake
+      description: Test serialization of outer boolean types
+      operationId: Boolean
+      requestBody:
+        description: Input boolean as post body
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Boolean'
+        required: false
+      responses:
+        '200':
+          description: Output boolean
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Boolean'
+      x-codegen-request-body-name: body
+  /fake/refs/arraymodel:
+    post:
+      tags:
+        - fake
+      description: Test serialization of ArrayModel
+      operationId: ArrayModel
+      requestBody:
+        description: Input model
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/AnimalFarm'
+        required: false
+      responses:
+        '200':
+          description: Output model
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/AnimalFarm'
+      x-codegen-request-body-name: body
+  /fake/refs/composed_one_of_number_with_validations:
+    post:
+      tags:
+        - fake
+      description: Test serialization of object with $refed properties
+      operationId: ComposedOneOfDifferentTypes
+      requestBody:
+        description: Input model
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ComposedOneOfDifferentTypes'
+        required: false
+      responses:
+        '200':
+          description: Output model
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ComposedOneOfDifferentTypes'
+  /fake/refs/object_model_with_ref_props:
+    post:
+      tags:
+        - fake
+      description: Test serialization of object with $refed properties
+      operationId: ObjectModelWithRefProps
+      requestBody:
+        description: Input model
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ObjectModelWithRefProps'
+        required: false
+      responses:
+        '200':
+          description: Output model
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ObjectModelWithRefProps'
+      x-codegen-request-body-name: body
+  /fake/refs/enum:
+    post:
+      tags:
+        - fake
+      description: Test serialization of outer enum
+      operationId: StringEnum
+      requestBody:
+        description: Input enum
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/StringEnum'
+        required: false
+      responses:
+        '200':
+          description: Output enum
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/StringEnum'
+      x-codegen-request-body-name: body
+  /fake/refs/array-of-enums:
+    post:
+      tags:
+        - fake
+      summary: Array of Enums
+      operationId: ArrayOfEnums
+      requestBody:
+        description: Input enum
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ArrayOfEnums'
+        required: false
+      responses:
+        200:
+          description: Got named array of enums
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ArrayOfEnums'
+  /fake/additional-properties-with-array-of-enums:
+    get:
+      tags:
+        - fake
+      summary: Additional Properties with Array of Enums
+      operationId: AdditionalPropertiesWithArrayOfEnums
+      requestBody:
+        description: Input enum
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/AdditionalPropertiesWithArrayOfEnums'
+        required: false
+      responses:
+        200:
+          description: Got object with additional properties with array of enums
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/AdditionalPropertiesWithArrayOfEnums'
+  /fake/jsonFormData:
+    get:
+      tags:
+        - fake
+      summary: test json serialization of form data
+      description: ''
+      operationId: JsonFormData
+      responses:
+        '200':
+          description: successful operation
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                param:
+                  description: field1
+                  type: string
+                param2:
+                  description: field2
+                  type: string
+              required:
+                - param
+                - param2
+  /fake/inline-additionalProperties:
+    post:
+      tags:
+        - fake
+      summary: test inline additionalProperties
+      description: ''
+      operationId: InlineAdditionalProperties
+      responses:
+        '200':
+          description: successful operation
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: object
+              additionalProperties:
+                type: string
+        description: request body
+        required: true
+  /fake/body-with-query-params:
+    put:
+      tags:
+        - fake
+      operationId: BodyWithQueryParams
+      parameters:
+        - name: query
+          in: query
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Success
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/User'
+        required: true
+  /another-fake/dummy:
+    patch:
+      tags:
+        - $another-fake?
+      summary: To test special tags
+      description: To test special tags and operation ID starting with number
+      operationId: '123_test_@#$%_special_tags'
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Client'
+      requestBody:
+        $ref: '#/components/requestBodies/Client'
+  /fake/body-with-file-schema:
+    put:
+      tags:
+        - fake
+      description: >-
+        For this test, the body for this request much reference a schema named
+        `File`.
+      operationId: BodyWithFileSchema
+      responses:
+        '200':
+          description: Success
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/FileSchemaTestClass'
+        required: true
+  /fake/case-sensitive-params:
+    put:
+      tags:
+        - fake
+      description: Ensures that original naming is used in endpoint params, that way we on't have collisions
+      operationId: CaseSensitiveParams
+      parameters:
+        - name: someVar
+          in: query
+          required: true
+          schema:
+            type: string
+        - name: SomeVar
+          in: query
+          required: true
+          schema:
+            type: string
+        - name: some_var
+          in: query
+          required: true
+          schema:
+            type: string
+      responses:
+        "200":
+          description: Success
+  /fake/test-query-paramters:
+    put:
+      tags:
+        - fake
+      description: To test the collection format in query parameters
+      operationId: QueryParameterCollectionFormat
+      parameters:
+        - name: pipe
+          in: query
+          required: true
+          schema:
+            type: array
+            items:
+              type: string
+        - name: ioutil
+          in: query
+          required: true
+          style: form
+          explode: false
+          schema:
+            type: array
+            items:
+              type: string
+        - name: http
+          in: query
+          required: true
+          style: spaceDelimited
+          schema:
+            type: array
+            items:
+              type: string
+        - name: url
+          in: query
+          required: true
+          style: form
+          explode: false
+          schema:
+            type: array
+            items:
+              type: string
+        - name: context
+          in: query
+          required: true
+          explode: true
+          schema:
+            type: array
+            items:
+              type: string
+        - name: refParam
+          in: query
+          required: true
+          schema:
+            $ref: '#/components/schemas/StringWithValidation'
+      responses:
+        "200":
+          description: Success
+  '/fake/{petId}/uploadImageWithRequiredFile':
+    post:
+      tags:
+        - pet
+      summary: uploads an image (required)
+      description: ''
+      operationId: uploadFileWithRequiredFile
+      parameters:
+        - name: petId
+          in: path
+          description: ID of pet to update
+          required: true
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponse'
+      security:
+        - petstore_auth:
+            - 'write:pets'
+            - 'read:pets'
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                additionalMetadata:
+                  description: Additional data to pass to server
+                  type: string
+                requiredFile:
+                  description: file to upload
+                  type: string
+                  format: binary
+              required:
+                - requiredFile
+  /fake/parameterCollisions/{1}/{aB}/{Ab}/{self}/{A-B}/:
+    post:
+      tags:
+        - fake
+      summary: parameter collision case
+      operationId: parameterCollisions
+      parameters:
+        - name: 1
+          in: query
+          schema:
+            type: string
+        - name: aB
+          in: query
+          schema:
+            type: string
+        - name: Ab
+          in: query
+          schema:
+            type: string
+        - name: self
+          in: query
+          schema:
+            type: string
+        - name: A-B
+          in: query
+          schema:
+            type: string
+        - name: 1
+          in: header
+          schema:
+            type: string
+        - name: aB
+          in: header
+          schema:
+            type: string
+        - name: self
+          in: header
+          schema:
+            type: string
+        - name: A-B
+          in: header
+          schema:
+            type: string
+        - name: 1
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: aB
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: Ab
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: self
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: A-B
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: 1
+          in: cookie
+          schema:
+            type: string
+        - name: aB
+          in: cookie
+          schema:
+            type: string
+        - name: Ab
+          in: cookie
+          schema:
+            type: string
+        - name: self
+          in: cookie
+          schema:
+            type: string
+        - name: A-B
+          in: cookie
+          schema:
+            type: string
+      requestBody:
+        content:
+          application/json:
+            schema: {}
+      responses:
+        200:
+          description: success
+          content:
+            application/json:
+              schema: {}
+  /fake/uploadFile:
+    post:
+      tags:
+        - fake
+      summary: uploads a file using multipart/form-data
+      description: ''
+      operationId: uploadFile
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponse'
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                additionalMetadata:
+                  description: Additional data to pass to server
+                  type: string
+                file:
+                  description: file to upload
+                  type: string
+                  format: binary
+              required:
+                - file
+  /fake/uploadFiles:
+    post:
+      tags:
+        - fake
+      summary: uploads files using multipart/form-data
+      description: ''
+      operationId: uploadFiles
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponse'
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                files:
+                  type: array
+                  items:
+                    type: string
+                    format: binary
+  /fake/uploadDownloadFile:
+    post:
+      tags:
+        - fake
+      summary: uploads a file and downloads a file using application/octet-stream
+      description: ''
+      operationId: uploadDownloadFile
+      responses:
+        '200':
+          description: successful operation
+          content:
+            application/octet-stream:
+              schema:
+                type: string
+                format: binary
+                description: file to download
+      requestBody:
+        required: true
+        content:
+          application/octet-stream:
+            schema:
+              type: string
+              format: binary
+              description: file to upload
+  /fake/health:
+    get:
+      tags:
+        - fake
+      summary: Health check endpoint
+      responses:
+        200:
+          description: The instance started successfully
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HealthCheckResult'
+servers:
+  - url: 'http://{server}.swagger.io:{port}/v2'
+    description: petstore server
+    variables:
+      server:
+        enum:
+          - 'petstore'
+          - 'qa-petstore'
+          - 'dev-petstore'
+        default: 'petstore'
+      port:
+        enum:
+          - 80
+          - 8080
+        default: 80
+  - url: https://localhost:8080/{version}
+    description: The local server
+    variables:
+      version:
+        enum:
+          - 'v1'
+          - 'v2'
+        default: 'v2'
+components:
+  requestBodies:
+    UserArray:
+      content:
+        application/json:
+          schema:
+            type: array
+            items:
+              $ref: '#/components/schemas/User'
+      description: List of user object
+      required: true
+    Client:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Client'
+      description: client model
+      required: true
+    Pet:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Pet'
+        application/xml:
+          schema:
+            $ref: '#/components/schemas/Pet'
+      description: Pet object that needs to be added to the store
+      required: true
+  securitySchemes:
+    petstore_auth:
+      type: oauth2
+      flows:
+        implicit:
+          authorizationUrl: 'http://petstore.swagger.io/api/oauth/dialog'
+          scopes:
+            'write:pets': modify pets in your account
+            'read:pets': read your pets
+    api_key:
+      type: apiKey
+      name: api_key
+      in: header
+    api_key_query:
+      type: apiKey
+      name: api_key_query
+      in: query
+    http_basic_test:
+      type: http
+      scheme: basic
+    bearer_test:
+      type: http
+      scheme: bearer
+      bearerFormat: JWT
+    http_signature_test:
+      # Test the 'HTTP signature' security scheme.
+      # Each HTTP request is cryptographically signed as specified
+      # in https://datatracker.ietf.org/doc/draft-cavage-http-signatures/
+      type: http
+      scheme: signature
+  schemas:
+    Foo:
+      type: object
+      properties:
+        bar:
+          $ref: '#/components/schemas/Bar'
+    Bar:
+      type: string
+      default: bar
+    Order:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        petId:
+          type: integer
+          format: int64
+        quantity:
+          type: integer
+          format: int32
+        shipDate:
+          type: string
+          format: date-time
+          example: '2020-02-02T20:20:20.000222Z'
+        status:
+          type: string
+          description: Order Status
+          enum:
+            - placed
+            - approved
+            - delivered
+        complete:
+          type: boolean
+          default: false
+      xml:
+        name: Order
+    Category:
+      type: object
+      required:
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+          default: default-name
+      xml:
+        name: Category
+    User:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+          x-is-unique: true
+        username:
+          type: string
+        firstName:
+          type: string
+        lastName:
+          type: string
+        email:
+          type: string
+        password:
+          type: string
+        phone:
+          type: string
+        userStatus:
+          type: integer
+          format: int32
+          description: User Status
+        objectWithNoDeclaredProps:
+          type: object
+          # Note: the 'additionalProperties' keyword is not specified, which is
+          # equivalent to allowing undeclared properties of any type.
+          description: test code generation for objects
+            Value must be a map of strings to values. It cannot be the 'null' value.
+        objectWithNoDeclaredPropsNullable:
+          type: object
+          # Note: the 'additionalProperties' keyword is not specified, which is
+          # equivalent to allowing undeclared properties of any type.
+          description: test code generation for nullable objects.
+            Value must be a map of strings to values or the 'null' value.
+          nullable: true
+        anyTypeProp:
+          description: test code generation for any type
+            Here the 'type' attribute is not specified, which means the value can be anything,
+            including the null value, string, number, boolean, array or object.
+            See https://github.com/OAI/OpenAPI-Specification/issues/1389
+        # TODO: this should be supported, currently there are some issues in the code generation.
+        #anyTypeExceptNullProp:
+        #  description: any type except 'null'
+        #    Here the 'type' attribute is not specified, which means the value can be anything,
+        #    including the null value, string, number, boolean, array or object.
+        #  not:
+        #    type: 'null'
+        anyTypePropNullable:
+          description: test code generation for any type
+            Here the 'type' attribute is not specified, which means the value can be anything,
+            including the null value, string, number, boolean, array or object.
+            The 'nullable' attribute does not change the allowed values.
+          nullable: true
+      xml:
+        name: User
+    Tag:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+      xml:
+        name: Tag
+    Pet:
+      type: object
+      description: Pet object that needs to be added to the store
+      required:
+        - name
+        - photoUrls
+      properties:
+        id:
+          type: integer
+          format: int64
+          x-is-unique: true
+        category:
+          $ref: '#/components/schemas/Category'
+        name:
+          type: string
+          example: doggie
+        photoUrls:
+          type: array
+          xml:
+            name: photoUrl
+            wrapped: true
+          items:
+            type: string
+        tags:
+          type: array
+          xml:
+            name: tag
+            wrapped: true
+          items:
+            $ref: '#/components/schemas/Tag'
+        status:
+          type: string
+          description: pet status in the store
+          enum:
+            - available
+            - pending
+            - sold
+      xml:
+        name: Pet
+    ApiResponse:
+      type: object
+      properties:
+        code:
+          type: integer
+          format: int32
+        type:
+          type: string
+        message:
+          type: string
+    Return:
+      description: Model for testing reserved words
+      properties:
+        return:
+          description: this is a reserved python keyword
+          type: integer
+          format: int32
+      xml:
+        name: Return
+    Name:
+      description: Model for testing model name same as property name
+      required:
+        - name
+      properties:
+        name:
+          type: integer
+          format: int32
+        snake_case:
+          readOnly: true
+          type: integer
+          format: int32
+        property:
+          description: this is a reserved python keyword
+          type: string
+      xml:
+        name: Name
+    200_response:
+      description: model with an invalid class name for python, starts with a number
+      properties:
+        name:
+          type: integer
+          format: int32
+        class:
+          description: this is a reserved python keyword
+          type: string
+      xml:
+        name: Name
+    ClassModel:
+      description: Model for testing model with "_class" property
+      properties:
+        _class:
+          type: string
+    Dog:
+      allOf:
+        - $ref: '#/components/schemas/Animal'
+        - type: object
+          properties:
+            breed:
+              type: string
+    Cat:
+      allOf:
+        - $ref: '#/components/schemas/Animal'
+        - type: object
+          properties:
+            declawed:
+              type: boolean
+    Address:
+      type: object
+      additionalProperties:
+        type: integer
+    Animal:
+      type: object
+      discriminator:
+        propertyName: className
+      required:
+        - className
+      properties:
+        className:
+          type: string
+        color:
+          type: string
+          default: red
+    AnimalFarm:
+      type: array
+      items:
+        $ref: '#/components/schemas/Animal'
+    FormatTest:
+      type: object
+      required:
+        - number
+        - byte
+        - date
+        - password
+      properties:
+        integer:
+          type: integer
+          maximum: 100
+          minimum: 10
+          multipleOf: 2
+        int32:
+          type: integer
+          format: int32
+        int32withValidations:
+          type: integer
+          format: int32
+          maximum: 200
+          minimum: 20
+        int64:
+          type: integer
+          format: int64
+        number:
+          maximum: 543.2
+          minimum: 32.1
+          type: number
+          multipleOf: 32.5
+        float:
+          description: this is a reserved python keyword
+          type: number
+          format: float
+          maximum: 987.6
+          minimum: 54.3
+        float32:
+          type: number
+          format: float
+        double:
+          type: number
+          format: double
+          maximum: 123.4
+          minimum: 67.8
+        float64:
+          type: number
+          format: double
+        arrayWithUniqueItems:
+          type: array
+          items:
+            type: number
+          uniqueItems: true
+        string:
+          type: string
+          pattern: '/[a-z]/i'
+        byte:
+          type: string
+          format: byte
+        binary:
+          type: string
+          format: binary
+        date:
+          type: string
+          format: date
+          example: '2020-02-02'
+        dateTime:
+          type: string
+          format: date-time
+          example: '2007-12-03T10:15:30+01:00'
+        uuid:
+          type: string
+          format: uuid
+          example: 72f98069-206d-4f12-9f12-3d1e525a8e84
+        uuidNoExample:
+          type: string
+          format: uuid
+        password:
+          type: string
+          format: password
+          maxLength: 64
+          minLength: 10
+        pattern_with_digits:
+          description: A string that is a 10 digit number. Can have leading zeros.
+          type: string
+          pattern: '^\d{10}$'
+        pattern_with_digits_and_delimiter:
+          description: A string starting with 'image_' (case insensitive) and one to three digits following i.e. Image_01.
+          type: string
+          pattern: '/^image_\d{1,3}$/i'
+        noneProp:
+          type: 'null'
+    EnumClass:
+      type: string
+      default: '-efg'
+      enum:
+        - _abc
+        - '-efg'
+        - (xyz)
+    Enum_Test:
+      type: object
+      required:
+        - enum_string_required
+      properties:
+        enum_string:
+          type: string
+          enum:
+            - UPPER
+            - lower
+            - ''
+        enum_string_required:
+          type: string
+          enum:
+            - UPPER
+            - lower
+            - ''
+        enum_integer:
+          type: integer
+          format: int32
+          enum:
+            - 1
+            - -1
+        enum_number:
+          type: number
+          format: double
+          enum:
+            - 1.1
+            - -1.2
+        stringEnum:
+          $ref: '#/components/schemas/StringEnum'
+        IntegerEnum:
+          $ref: '#/components/schemas/IntegerEnum'
+        StringEnumWithDefaultValue:
+          $ref: '#/components/schemas/StringEnumWithDefaultValue'
+        IntegerEnumWithDefaultValue:
+          $ref: '#/components/schemas/IntegerEnumWithDefaultValue'
+        IntegerEnumOneValue:
+          $ref: '#/components/schemas/IntegerEnumOneValue'
+    AdditionalPropertiesClass:
+      type: object
+      properties:
+        map_property:
+          type: object
+          additionalProperties:
+            type: string
+        map_of_map_property:
+          type: object
+          additionalProperties:
+            type: object
+            additionalProperties:
+              type: string
+        anytype_1: {}
+        map_with_undeclared_properties_anytype_1:
+          type: object
+        map_with_undeclared_properties_anytype_2:
+          type: object
+          properties: {}
+        map_with_undeclared_properties_anytype_3:
+          type: object
+          additionalProperties: true
+        empty_map:
+          type: object
+          description: an object with no declared properties and no undeclared
+            properties, hence it's an empty map.
+          additionalProperties: false
+        map_with_undeclared_properties_string:
+          type: object
+          additionalProperties:
+            type: string
+    MixedPropertiesAndAdditionalPropertiesClass:
+      type: object
+      properties:
+        uuid:
+          type: string
+          format: uuid
+        dateTime:
+          type: string
+          format: date-time
+        map:
+          type: object
+          additionalProperties:
+            $ref: '#/components/schemas/Animal'
+    Client:
+      type: object
+      properties:
+        client:
+          type: string
+    ReadOnlyFirst:
+      type: object
+      properties:
+        bar:
+          type: string
+          readOnly: true
+        baz:
+          type: string
+    hasOnlyReadOnly:
+      type: object
+      properties:
+        bar:
+          type: string
+          readOnly: true
+        foo:
+          type: string
+          readOnly: true
+    Capitalization:
+      type: object
+      properties:
+        smallCamel:
+          type: string
+        CapitalCamel:
+          type: string
+        small_Snake:
+          type: string
+        Capital_Snake:
+          type: string
+        SCA_ETH_Flow_Points:
+          type: string
+        ATT_NAME:
+          description: |
+            Name of the pet
+          type: string
+    MapTest:
+      type: object
+      properties:
+        map_map_of_string:
+          type: object
+          additionalProperties:
+            type: object
+            additionalProperties:
+              type: string
+        map_of_enum_string:
+          type: object
+          additionalProperties:
+            type: string
+            enum:
+              - UPPER
+              - lower
+        direct_map:
+          type: object
+          additionalProperties:
+            type: boolean
+        indirect_map:
+          $ref: '#/components/schemas/StringBooleanMap'
+    ArrayTest:
+      type: object
+      properties:
+        array_of_string:
+          type: array
+          items:
+            type: string
+        array_array_of_integer:
+          type: array
+          items:
+            type: array
+            items:
+              type: integer
+              format: int64
+        array_array_of_model:
+          type: array
+          items:
+            type: array
+            items:
+              $ref: '#/components/schemas/ReadOnlyFirst'
+    NumberOnly:
+      type: object
+      properties:
+        JustNumber:
+          type: number
+    ArrayOfNumberOnly:
+      type: object
+      properties:
+        ArrayNumber:
+          type: array
+          items:
+            type: number
+    ArrayOfArrayOfNumberOnly:
+      type: object
+      properties:
+        ArrayArrayNumber:
+          type: array
+          items:
+            type: array
+            items:
+              type: number
+    EnumArrays:
+      type: object
+      properties:
+        just_symbol:
+          type: string
+          enum:
+            - '>='
+            - $
+        array_enum:
+          type: array
+          items:
+            type: string
+            enum:
+              - fish
+              - crab
+    StringEnum:
+      nullable: true
+      type: string
+      enum:
+        - "placed"
+        - "approved"
+        - "delivered"
+        - 'single quoted'
+        - |-
+          multiple
+          lines
+        - "double quote \n with newline"
+    IntegerEnum:
+      type: integer
+      enum:
+        - 0
+        - 1
+        - 2
+    IntegerEnumBig:
+      type: integer
+      enum:
+        - 10
+        - 11
+        - 12
+    StringEnumWithDefaultValue:
+      type: string
+      enum:
+        - placed
+        - approved
+        - delivered
+      default: placed
+    IntegerEnumWithDefaultValue:
+      type: integer
+      enum:
+        - 0
+        - 1
+        - 2
+      default: 0
+    IntegerEnumOneValue:
+      type: integer
+      enum:
+        - 0
+    NullableString:
+      nullable: true
+      type: string
+    ObjectModelWithRefProps:
+      description: a model that includes properties which should stay primitive (String + Boolean) and one which is defined as a class, NumberWithValidations
+      type: object
+      properties:
+        myNumber:
+          $ref: '#/definitions/NumberWithValidations'
+        myString:
+          $ref: '#/definitions/String'
+        myBoolean:
+          $ref: '#/definitions/Boolean'
+    NumberWithValidations:
+      type: number
+      minimum: 10
+      maximum: 20
+    ComposedAnyOfDifferentTypesNoValidations:
+      anyOf:
+        - type: object
+        - type: string
+          format: date
+        - type: string
+          format: date-time
+        - type: string
+          format: binary
+        - type: string
+          format: byte
+        - type: string
+        - type: object
+        - type: boolean
+        - type: 'null'
+        - type: array
+          items: {}
+        - type: number
+        - type: number
+          format: float
+        - type: number
+          format: double
+        - type: integer
+        - type: integer
+          format: int32
+        - type: integer
+          format: int64
+    ComposedOneOfDifferentTypes:
+      description: this is a model that allows payloads of type object or number
+      oneOf:
+        - $ref: '#/components/schemas/NumberWithValidations'
+        - $ref: '#/components/schemas/Animal'
+        - type: 'null'
+        - type: string
+          format: date
+        - type: object
+          minProperties: 4
+          maxProperties: 4
+        - type: array
+          maxItems: 4
+          minItems: 4
+          items: {}
+        - type: string
+          format: date-time
+          pattern: '^2020.*'
+    Number:
+      type: number
+    String:
+      type: string
+    Boolean:
+      type: boolean
+      x-codegen-body-parameter-name: boolean_post_body
+    StringBooleanMap:
+      additionalProperties:
+        type: boolean
+    FileSchemaTestClass:
+      type: object
+      properties:
+        file:
+          $ref: '#/components/schemas/File'
+        files:
+          type: array
+          items:
+            $ref: '#/components/schemas/File'
+    File:
+      type: object
+      description: Must be named `File` for test.
+      properties:
+        sourceURI:
+          description: Test capitalization
+          type: string
+    ObjectWithDifficultlyNamedProps:
+      type: object
+      description: model with properties that have invalid names for python
+      properties:
+        '$special[property.name]':
+          type: integer
+          format: int64
+        123-list:
+          type: string
+        123Number:
+          type: integer
+          readOnly: true
+      required:
+        - 123-list
+    _special_model.name_:
+      type: object
+      description: model with an invalid class name for python
+      properties:
+        a:
+          type: string
+    HealthCheckResult:
+      type: object
+      properties:
+        NullableMessage:
+          nullable: true
+          type: string
+      description: Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+    NullableClass:
+      type: object
+      properties:
+        integer_prop:
+          type: integer
+          nullable: true
+        number_prop:
+          type: number
+          nullable: true
+        boolean_prop:
+          type: boolean
+          nullable: true
+        string_prop:
+          type: string
+          nullable: true
+        date_prop:
+          type: string
+          format: date
+          nullable: true
+        datetime_prop:
+          type: string
+          format: date-time
+          nullable: true
+        array_nullable_prop:
+          type: array
+          nullable: true
+          items:
+            type: object
+        array_and_items_nullable_prop:
+          type: array
+          nullable: true
+          items:
+            type: object
+            nullable: true
+        array_items_nullable:
+          type: array
+          items:
+            type: object
+            nullable: true
+        object_nullable_prop:
+          type: object
+          nullable: true
+          additionalProperties:
+            type: object
+        object_and_items_nullable_prop:
+          type: object
+          nullable: true
+          additionalProperties:
+            type: object
+            nullable: true
+        object_items_nullable:
+          type: object
+          additionalProperties:
+            type: object
+            nullable: true
+      additionalProperties:
+        type: object
+        nullable: true
+    fruit:
+      properties:
+        color:
+          type: string
+      oneOf:
+        - $ref: '#/components/schemas/apple'
+        - $ref: '#/components/schemas/banana'
+    apple:
+      type: object
+      properties:
+        cultivar:
+          type: string
+          pattern: ^[a-zA-Z\s]*$
+        origin:
+          type: string
+          pattern: /^[A-Z\s]*$/i
+      required:
+        - cultivar
+      nullable: true
+    banana:
+      type: object
+      properties:
+        lengthCm:
+          type: number
+      required:
+        - lengthCm
+    mammal:
+      oneOf:
+        - $ref: '#/components/schemas/whale'
+        - $ref: '#/components/schemas/zebra'
+        - $ref: '#/components/schemas/Pig'
+      discriminator:
+        propertyName: className
+    whale:
+      type: object
+      properties:
+        hasBaleen:
+          type: boolean
+        hasTeeth:
+          type: boolean
+        className:
+          type: string
+          enum:
+            - whale
+      required:
+        - className
+    zebra:
+      type: object
+      properties:
+        type:
+          type: string
+          enum:
+            - plains
+            - mountain
+            - grevys
+        className:
+          type: string
+          enum:
+            - zebra
+      required:
+        - className
+      additionalProperties: true
+    Pig:
+      oneOf:
+        - $ref: '#/components/schemas/BasquePig'
+        - $ref: '#/components/schemas/DanishPig'
+      discriminator:
+        propertyName: className
+    BasquePig:
+      type: object
+      properties:
+        className:
+          type: string
+          enum:
+            - BasquePig
+      required:
+        - className
+    DanishPig:
+      type: object
+      properties:
+        className:
+          type: string
+          enum:
+            - DanishPig
+      required:
+        - className
+    gmFruit:
+      properties:
+        color:
+          type: string
+      anyOf:
+        - $ref: '#/components/schemas/apple'
+        - $ref: '#/components/schemas/banana'
+    fruitReq:
+      oneOf:
+        - type: 'null'
+        - $ref: '#/components/schemas/appleReq'
+        - $ref: '#/components/schemas/bananaReq'
+    appleReq:
+      type: object
+      properties:
+        cultivar:
+          type: string
+        mealy:
+          type: boolean
+      required:
+        - cultivar
+      additionalProperties: false
+    bananaReq:
+      type: object
+      properties:
+        lengthCm:
+          type: number
+        sweet:
+          type: boolean
+      required:
+        - lengthCm
+      additionalProperties: false
+    # go-experimental is unable to make Triangle and Quadrilateral models
+    # correctly https://github.com/OpenAPITools/openapi-generator/issues/6149
+    Drawing:
+      type: object
+      properties:
+        mainShape:
+          # A property whose value is a 'oneOf' type, and the type is referenced instead
+          # of being defined inline. The value cannot be null.
+          $ref: '#/components/schemas/Shape'
+        shapeOrNull:
+          # A property whose value is a 'oneOf' type, and the type is referenced instead
+          # of being defined inline. The value may be null because ShapeOrNull has 'null'
+          # type as a child schema of 'oneOf'.
+          $ref: '#/components/schemas/ShapeOrNull'
+        nullableShape:
+          # A property whose value is a 'oneOf' type, and the type is referenced instead
+          # of being defined inline. The value may be null because NullableShape has the
+          # 'nullable: true' attribute. For this specific scenario this is exactly the
+          # same thing as 'shapeOrNull'.
+          $ref: '#/components/schemas/NullableShape'
+        shapes:
+          type: array
+          items:
+            $ref: '#/components/schemas/Shape'
+      additionalProperties:
+        # Here the additional properties are specified using a referenced schema.
+        # This is just to validate the generated code works when using $ref
+        # under 'additionalProperties'.
+        $ref: '#/components/schemas/fruit'
+    Shape:
+      oneOf:
+        - $ref: '#/components/schemas/Triangle'
+        - $ref: '#/components/schemas/Quadrilateral'
+      discriminator:
+        propertyName: shapeType
+    ShapeOrNull:
+      description: The value may be a shape or the 'null' value.
+        This is introduced in OAS schema >= 3.1.
+      oneOf:
+        - type: 'null'
+        - $ref: '#/components/schemas/Triangle'
+        - $ref: '#/components/schemas/Quadrilateral'
+      discriminator:
+        propertyName: shapeType
+    NullableShape:
+      description: The value may be a shape or the 'null' value.
+        The 'nullable' attribute was introduced in OAS schema >= 3.0
+        and has been deprecated in OAS schema >= 3.1.
+        For a nullable composed schema to work, one of its chosen oneOf schemas must be type null
+      oneOf:
+        - $ref: '#/components/schemas/Triangle'
+        - $ref: '#/components/schemas/Quadrilateral'
+        - type: null
+      discriminator:
+        propertyName: shapeType
+      nullable: true
+    TriangleInterface:
+      properties:
+        shapeType:
+          type: string
+          enum:
+            - 'Triangle'
+        triangleType:
+          type: string
+      required:
+        - shapeType
+        - triangleType
+    Triangle:
+      oneOf:
+        - $ref: '#/components/schemas/EquilateralTriangle'
+        - $ref: '#/components/schemas/IsoscelesTriangle'
+        - $ref: '#/components/schemas/ScaleneTriangle'
+      discriminator:
+        propertyName: triangleType
+      # Note: the 'additionalProperties' keyword is not specified, which is
+      # equivalent to allowing undeclared properties of any type.
+    EquilateralTriangle:
+      allOf:
+        - $ref: '#/components/schemas/TriangleInterface'
+        - type: object
+          properties:
+            triangleType:
+              type: string
+              enum:
+                - 'EquilateralTriangle'
+    IsoscelesTriangle:
+      allOf:
+        - $ref: '#/components/schemas/TriangleInterface'
+        - type: object
+          properties:
+            triangleType:
+              type: string
+              enum:
+                - 'IsoscelesTriangle'
+    ScaleneTriangle:
+      allOf:
+        - $ref: '#/components/schemas/TriangleInterface'
+        - type: object
+          properties:
+            triangleType:
+              type: string
+              enum:
+                - 'ScaleneTriangle'
+    QuadrilateralInterface:
+      properties:
+        shapeType:
+          type: string
+          enum:
+            - 'Quadrilateral'
+        quadrilateralType:
+          type: string
+      required:
+        - shapeType
+        - quadrilateralType
+    Quadrilateral:
+      oneOf:
+        - $ref: '#/components/schemas/SimpleQuadrilateral'
+        - $ref: '#/components/schemas/ComplexQuadrilateral'
+      discriminator:
+        propertyName: quadrilateralType
+    SimpleQuadrilateral:
+      allOf:
+        - $ref: '#/components/schemas/QuadrilateralInterface'
+        - type: object
+          properties:
+            quadrilateralType:
+              type: string
+              enum:
+                - 'SimpleQuadrilateral'
+    ComplexQuadrilateral:
+      allOf:
+        - $ref: '#/components/schemas/QuadrilateralInterface'
+        - type: object
+          properties:
+            quadrilateralType:
+              type: string
+              enum:
+                - 'ComplexQuadrilateral'
+    GrandparentAnimal:
+      type: object
+      required:
+        - pet_type
+      properties:
+        pet_type:
+          type: string
+      discriminator:
+        propertyName: pet_type
+    ParentPet:
+      type: object
+      allOf:
+        - $ref: '#/components/schemas/GrandparentAnimal'
+    ChildCat:
+      allOf:
+        - $ref: '#/components/schemas/ParentPet'
+        - type: object
+          properties:
+            name:
+              type: string
+    ArrayOfEnums:
+      type: array
+      items:
+        $ref: '#/components/schemas/StringEnum'
+    AdditionalPropertiesWithArrayOfEnums:
+      type: object
+      additionalProperties:
+        type: array
+        items:
+          $ref: '#/components/schemas/EnumClass'
+    DateTimeTest:
+      type: string
+      default: '2010-01-01T10:10:10.000111+01:00'
+      example: '2010-01-01T10:10:10.000111+01:00'
+      format: date-time
+    ObjectInterface:
+      type: object
+    ObjectWithValidations:
+      type: object
+      minProperties: 2
+    SomeObject:
+      allOf:
+        - $ref: '#/components/schemas/ObjectInterface'
+# TODO turn this back on later
+#    AnyType:
+#      description: this should allow any type because type was not specified
+    ArrayWithValidationsInItems:
+      type: array
+      maxItems: 2
+      items:
+        type: integer
+        format: int64
+        maximum: 7
+    ArrayHoldingAnyType:
+      type: array
+      items:
+        description: any type can be stored here
+    DateWithValidations:
+      type: string
+      format: date
+      pattern: '^2020.*'
+    DateTimeWithValidations:
+      type: string
+      format: date-time
+      pattern: '^2020.*'
+    NoAdditionalProperties:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        petId:
+          type: integer
+          format: int64
+      required:
+        - id
+      additionalProperties: false
+    IntegerMax10:
+      type: integer
+      format: int64
+      maximum: 10
+    IntegerMin15:
+      type: integer
+      format: int64
+      minimum: 15
+    StringWithValidation:
+      type: string
+      minLength: 7
+    Player:
+      type: object
+      description: a model that includes a self reference this forces properties and additionalProperties
+                   to be lazy loaded in python models because the Player class has not fully loaded when defining
+                   properties
+      properties:
+        name:
+          type: string
+        enemyPlayer:
+          $ref: '#/components/schemas/Player'
+    BooleanEnum:
+      type: boolean
+      enum:
+        - true
+    ComposedObject:
+      type: object
+      allOf:
+        - {}
+    ComposedNumber:
+      type: number
+      allOf:
+        - {}
+    ComposedString:
+      type: string
+      allOf:
+        - {}
+    ComposedBool:
+      type: boolean
+      allOf:
+        - {}
+    ComposedArray:
+      type: array
+      items: {}
+      allOf:
+        - {}
+    ComposedNone:
+      type: 'null'
+      allOf:
+        - {}
+    Currency:
+      type: string
+      enum:
+        - eur
+        - usd
+    Money:
+      type: object
+      properties:
+        amount:
+          type: string
+          format: number
+        currency:
+          $ref: '#/components/schemas/Currency'
+      required:
+        - amount
+        - currency
+    DecimalPayload:
+      type: string
+      format: number
+    ObjectWithDecimalProperties:
+      type: object
+      properties:
+        length:
+          $ref: '#/components/schemas/DecimalPayload'
+        width:
+          type: string
+          format: number
+        cost:
+          $ref: '#/components/schemas/Money'
\ No newline at end of file
diff --git a/modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml b/modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
index ccb4451c6a4..758c546fe91 100644
--- a/modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
+++ b/modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
@@ -2494,4 +2494,13 @@ components:
     BooleanEnum:
       type: boolean
       enum:
-        - true
\ No newline at end of file
+        - true
+    FooObject:
+      type: object
+      properties:
+        prop1:
+          type: array
+          items:
+            type: object
+        prop2:
+          type: object
\ No newline at end of file
diff --git a/modules/openapi-generator/src/test/resources/bugs/issue_11304_kotlin_backticks_reserved_words.yaml b/modules/openapi-generator/src/test/resources/bugs/issue_11304_kotlin_backticks_reserved_words.yaml
new file mode 100644
index 00000000000..33498515ac6
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/bugs/issue_11304_kotlin_backticks_reserved_words.yaml
@@ -0,0 +1,23 @@
+openapi: 3.0.3
+info:
+  title: Kotlin Issue
+  version: "1.0"
+
+servers:
+  - url: "http://localhost"
+
+paths:
+  /test/{value}:
+    post:
+      summary: test
+      operationId: test
+      parameters:
+        - name: value
+          in: path
+          required: true
+          schema:
+            type: string
+          example: something
+      responses:
+        '200':
+          description: OK
\ No newline at end of file
diff --git a/modules/openapi-generator/src/test/resources/jsoncodable.yaml b/modules/openapi-generator/src/test/resources/jsoncodable.yaml
new file mode 100644
index 00000000000..324b29c5c49
--- /dev/null
+++ b/modules/openapi-generator/src/test/resources/jsoncodable.yaml
@@ -0,0 +1,44 @@
+openapi: 3.0.0
+info:
+  title: test
+  version: '1.0'
+servers:
+  - url: 'http://localhost:3000'
+paths:
+  /postModel:
+    post:
+      summary: Create New User
+      operationId: post-user
+      responses:
+        '200':
+          description: User Created
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/User'
+              examples: {}
+        '400':
+          description: Missing Required Information
+      description: Create a new user.
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              $ref: '#/components/schemas/Request'
+    parameters: []
+components:
+  schemas:
+    User:
+      title: User
+      type: object
+      description: ''
+      x-examples: {}
+      properties:
+        integerValue:
+          type: integer
+    Request:
+      title: Request
+      type: object
+      properties:
+        user1:
+          $ref: '#/components/schemas/User'
\ No newline at end of file
diff --git a/mvnw b/mvnw
index 41c0f0c23db..5643201c7d8 100755
--- a/mvnw
+++ b/mvnw
@@ -36,6 +36,10 @@
 
 if [ -z "$MAVEN_SKIP_RC" ] ; then
 
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
   if [ -f /etc/mavenrc ] ; then
     . /etc/mavenrc
   fi
@@ -145,7 +149,7 @@ if [ -z "$JAVACMD" ] ; then
       JAVACMD="$JAVA_HOME/bin/java"
     fi
   else
-    JAVACMD="`which java`"
+    JAVACMD="`\\unset -f command; \\command -v java`"
   fi
 fi
 
@@ -212,9 +216,9 @@ else
       echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
     fi
     if [ -n "$MVNW_REPOURL" ]; then
-      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+      jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
     else
-      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+      jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
     fi
     while IFS="=" read key value; do
       case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
@@ -233,9 +237,9 @@ else
           echo "Found wget ... using wget"
         fi
         if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
-            wget "$jarUrl" -O "$wrapperJarPath"
+            wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
         else
-            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
         fi
     elif command -v curl > /dev/null; then
         if [ "$MVNW_VERBOSE" = true ]; then
@@ -305,6 +309,8 @@ WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
 
 exec "$JAVACMD" \
   $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
   -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
-  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  "-Dmaven.home=${M2_HOME}" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
   ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/mvnw.cmd b/mvnw.cmd
old mode 100755
new mode 100644
index 86115719e53..8a15b7f311f
--- a/mvnw.cmd
+++ b/mvnw.cmd
@@ -46,8 +46,8 @@ if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
 @REM Execute a user defined script before this one
 if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
 @REM check for pre script, once with legacy .bat ending and once with .cmd ending
-if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
-if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
 :skipRcPre
 
 @setlocal
@@ -120,9 +120,9 @@ SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
 set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
 set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
 
-set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
 
-FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
     IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
 )
 
@@ -134,7 +134,7 @@ if exist %WRAPPER_JAR% (
     )
 ) else (
     if not "%MVNW_REPOURL%" == "" (
-        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
     )
     if "%MVNW_VERBOSE%" == "true" (
         echo Couldn't find %WRAPPER_JAR%, downloading it ...
@@ -158,7 +158,13 @@ if exist %WRAPPER_JAR% (
 @REM work with both Windows and non-Windows executions.
 set MAVEN_CMD_LINE_ARGS=%*
 
-%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
 if ERRORLEVEL 1 goto error
 goto end
 
@@ -168,15 +174,15 @@ set ERROR_CODE=1
 :end
 @endlocal & set ERROR_CODE=%ERROR_CODE%
 
-if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
 @REM check for post script, once with legacy .bat ending and once with .cmd ending
-if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
-if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
 :skipRcPost
 
 @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
-if "%MAVEN_BATCH_PAUSE%" == "on" pause
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
 
-if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
 
-exit /B %ERROR_CODE%
+cmd /C exit /B %ERROR_CODE%
diff --git a/pom.xml b/pom.xml
index 19927acadef..e7a19c49bea 100644
--- a/pom.xml
+++ b/pom.xml
@@ -735,6 +735,18 @@
                 <module>samples/client/petstore/java-micronaut-client</module>
             </modules>
         </profile>
+        <profile>
+            <id>java-micronaut-server</id>
+            <activation>
+                <property>
+                    <name>env</name>
+                    <value>java</value>
+                </property>
+            </activation>
+            <modules>
+                <module>samples/server/petstore/java-micronaut-server</module>
+            </modules>
+        </profile>
         <profile>
             <id>java-msf4j-server</id>
             <activation>
@@ -1179,6 +1191,7 @@
                 <module>samples/server/petstore/spring-mvc-j8-async</module>
                 <module>samples/server/petstore/spring-mvc-j8-localdatetime</module>
                 <!-- servers -->
+                <module>samples/server/petstore/java-camel</module>
                 <module>samples/server/petstore/jaxrs-jersey</module>
                 <module>samples/server/petstore/jaxrs-spec</module>
                 <module>samples/server/petstore/jaxrs-spec-interface</module>
@@ -1246,26 +1259,8 @@
                 </property>
             </activation>
             <modules>
-                <module>samples/server/petstore/spring-mvc</module>
-                <module>samples/server/petstore/spring-mvc-default-value</module>
-                <module>samples/server/petstore/spring-mvc-j8-async</module>
-                <module>samples/server/petstore/spring-mvc-j8-localdatetime</module>
-                <!-- servers -->
+                <!-- clients -->
                 <module>samples/client/petstore/spring-cloud</module>
-                <module>samples/openapi3/client/petstore/spring-cloud</module>
-                <module>samples/client/petstore/spring-cloud-date-time</module>
-                <module>samples/openapi3/client/petstore/spring-cloud-date-time</module>
-                <module>samples/server/petstore/springboot</module>
-                <module>samples/openapi3/server/petstore/springboot</module>
-                <module>samples/server/petstore/springboot-beanvalidation</module>
-                <module>samples/server/petstore/springboot-useoptional</module>
-                <module>samples/openapi3/server/petstore/springboot-useoptional</module>
-                <module>samples/server/petstore/springboot-reactive</module>
-                <module>samples/openapi3/server/petstore/springboot-reactive</module>
-                <module>samples/server/petstore/springboot-implicitHeaders</module>
-                <module>samples/openapi3/server/petstore/springboot-implicitHeaders</module>
-                <module>samples/server/petstore/springboot-delegate</module>
-                <module>samples/openapi3/server/petstore/springboot-delegate</module>
             </modules>
         </profile>
         <!-- node 3 tests in CircleCI -->
@@ -1281,7 +1276,7 @@
                 <!-- clients -->
                 <module>samples/client/petstore/python</module>
                 <module>samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent</module>
-                <module>samples/openapi3/client/petstore/python</module>
+                <!--<module>samples/openapi3/client/petstore/python-legacy</module>-->
                 <!-- TODO comment out below when the test for typescript-nestjs is ready
                 <module>samples/client/petstore/typescript-nestjs-v6-provided-in-root</module>-->
                 <!-- comment out due to error `npm run build`
@@ -1311,6 +1306,21 @@
                 <module>samples/client/petstore/javascript-promise-es6</module>
             </modules>
         </profile>
+        <!-- node 4 tests in CircleCI -->
+        <profile>
+            <id>samples.circleci.node4</id>
+            <activation>
+                <property>
+                    <name>env</name>
+                    <value>samples.circleci.node4</value>
+                </property>
+            </activation>
+            <modules>
+                <!-- python clients which don't need the server running -->
+                <module>samples/openapi3/client/petstore/python</module>
+                <module>samples/openapi3/client/petstore/python-experimental</module>
+            </modules>
+        </profile>
         <!-- other tests in CircleCI -->
         <profile>
             <id>samples.circleci.others</id>
@@ -1323,7 +1333,8 @@
             <modules>
                 <!-- clients -->
                 <!-- test java-related projects -->
-                <module>samples/client/petstore/groovy</module>
+                <!-- comment out below due to gradle no longer installed in circleci
+                <module>samples/client/petstore/groovy</module> -->
                 <module>samples/client/petstore/scala-akka</module>
                 <module>samples/client/petstore/scala-sttp</module>
                 <module>samples/client/petstore/scala-httpclient</module>
@@ -1600,7 +1611,7 @@
         <maven-project-info-reports-plugin.version>3.0.0</maven-project-info-reports-plugin.version>
         <maven-release-plugin.version>2.5.3</maven-release-plugin.version>
         <maven-site-plugin.version>3.7.1</maven-site-plugin.version>
-        <mockito.version>3.12.4</mockito.version>
+        <mockito.version>4.2.0</mockito.version>
         <pmd-plugin.version>3.12.0</pmd-plugin.version>
         <reflections.version>0.10</reflections.version>
         <rxgen.version>1.3</rxgen.version>
diff --git a/samples/client/others/csharp-netcore-complex-files/docs/MultipartApi.md b/samples/client/others/csharp-netcore-complex-files/docs/MultipartApi.md
index dbf9ae08743..c16dc5314f5 100644
--- a/samples/client/others/csharp-netcore-complex-files/docs/MultipartApi.md
+++ b/samples/client/others/csharp-netcore-complex-files/docs/MultipartApi.md
@@ -103,7 +103,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://localhost";
             var apiInstance = new MultipartApi(config);
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | a file
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | a file
             var marker = new MultipartMixedMarker(); // MultipartMixedMarker |  (optional) 
 
             try
@@ -174,7 +174,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://localhost";
             var apiInstance = new MultipartApi(config);
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | One file (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | One file (optional) 
 
             try
             {
diff --git a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index d58f7e14d8d..a68e9179c81 100644
--- a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <AssemblyName>Org.OpenAPITools.Test</AssemblyName>
     <RootNamespace>Org.OpenAPITools.Test</RootNamespace>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs
index 11f158d6943..3c817d1a646 100644
--- a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -370,12 +370,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index c3b9ba0c212..e16e13b6070 100644
--- a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RequestOptions.cs
index 8cbf48a6032..6ebad92d947 100644
--- a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..f589a4482da 100644
--- a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * MultipartFile test
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index c445b1abb7c..ea3a254a4d2 100644
--- a/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/others/csharp-netcore-complex-files/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
diff --git a/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/api/PingApi.java b/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/api/PingApi.java
index 5f408920f53..dc64eace544 100644
--- a/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/api/PingApi.java
+++ b/samples/client/others/java/okhttp-gson-streaming/src/main/java/org/openapitools/client/api/PingApi.java
@@ -123,7 +123,7 @@ public class PingApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/c/api/PetAPI.c b/samples/client/petstore/c/api/PetAPI.c
index 28aab6c189d..b5d6f2d6180 100644
--- a/samples/client/petstore/c/api/PetAPI.c
+++ b/samples/client/petstore/c/api/PetAPI.c
@@ -64,7 +64,7 @@ PetAPI_addPet(apiClient_t *apiClient, pet_t * body )
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
     list_t *localVarHeaderType = NULL;
-    list_t *localVarContentType = list_create();
+    list_t *localVarContentType = list_createList();
     char      *localVarBodyParameters = NULL;
 
     // create the path
@@ -109,7 +109,7 @@ end:
     
     
     
-    list_free(localVarContentType);
+    list_freeList(localVarContentType);
     free(localVarPath);
     if (localVarSingleItemJSON_body) {
         cJSON_Delete(localVarSingleItemJSON_body);
@@ -125,7 +125,7 @@ void
 PetAPI_deletePet(apiClient_t *apiClient, long petId , char * api_key )
 {
     list_t    *localVarQueryParameters = NULL;
-    list_t    *localVarHeaderParameters = list_create();
+    list_t    *localVarHeaderParameters = list_createList();
     list_t    *localVarFormParameters = NULL;
     list_t *localVarHeaderType = NULL;
     list_t *localVarContentType = NULL;
@@ -185,7 +185,7 @@ end:
         apiClient->dataReceivedLen = 0;
     }
     
-    list_free(localVarHeaderParameters);
+    list_freeList(localVarHeaderParameters);
     
     
     
@@ -210,10 +210,10 @@ end:
 list_t*
 PetAPI_findPetsByStatus(apiClient_t *apiClient, list_t * status )
 {
-    list_t    *localVarQueryParameters = list_create();
+    list_t    *localVarQueryParameters = list_createList();
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -252,7 +252,7 @@ PetAPI_findPetsByStatus(apiClient_t *apiClient, list_t * status )
     if(!cJSON_IsArray(PetAPIlocalVarJSON)) {
         return 0;//nonprimitive container
     }
-    list_t *elementToReturn = list_create();
+    list_t *elementToReturn = list_createList();
     cJSON *VarJSON;
     cJSON_ArrayForEach(VarJSON, PetAPIlocalVarJSON)
     {
@@ -272,10 +272,10 @@ PetAPI_findPetsByStatus(apiClient_t *apiClient, list_t * status )
         apiClient->dataReceived = NULL;
         apiClient->dataReceivedLen = 0;
     }
-    list_free(localVarQueryParameters);
+    list_freeList(localVarQueryParameters);
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     return elementToReturn;
@@ -292,10 +292,10 @@ end:
 list_t*
 PetAPI_findPetsByTags(apiClient_t *apiClient, list_t * tags )
 {
-    list_t    *localVarQueryParameters = list_create();
+    list_t    *localVarQueryParameters = list_createList();
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -334,7 +334,7 @@ PetAPI_findPetsByTags(apiClient_t *apiClient, list_t * tags )
     if(!cJSON_IsArray(PetAPIlocalVarJSON)) {
         return 0;//nonprimitive container
     }
-    list_t *elementToReturn = list_create();
+    list_t *elementToReturn = list_createList();
     cJSON *VarJSON;
     cJSON_ArrayForEach(VarJSON, PetAPIlocalVarJSON)
     {
@@ -354,10 +354,10 @@ PetAPI_findPetsByTags(apiClient_t *apiClient, list_t * tags )
         apiClient->dataReceived = NULL;
         apiClient->dataReceivedLen = 0;
     }
-    list_free(localVarQueryParameters);
+    list_freeList(localVarQueryParameters);
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     return elementToReturn;
@@ -377,7 +377,7 @@ PetAPI_getPetById(apiClient_t *apiClient, long petId )
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -440,7 +440,7 @@ PetAPI_getPetById(apiClient_t *apiClient, long petId )
     
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     free(localVarToReplace_petId);
@@ -460,7 +460,7 @@ PetAPI_updatePet(apiClient_t *apiClient, pet_t * body )
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
     list_t *localVarHeaderType = NULL;
-    list_t *localVarContentType = list_create();
+    list_t *localVarContentType = list_createList();
     char      *localVarBodyParameters = NULL;
 
     // create the path
@@ -511,7 +511,7 @@ end:
     
     
     
-    list_free(localVarContentType);
+    list_freeList(localVarContentType);
     free(localVarPath);
     if (localVarSingleItemJSON_body) {
         cJSON_Delete(localVarSingleItemJSON_body);
@@ -528,9 +528,9 @@ PetAPI_updatePetWithForm(apiClient_t *apiClient, long petId , char * name , char
 {
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
-    list_t    *localVarFormParameters = list_create();
+    list_t    *localVarFormParameters = list_createList();
     list_t *localVarHeaderType = NULL;
-    list_t *localVarContentType = list_create();
+    list_t *localVarContentType = list_createList();
     char      *localVarBodyParameters = NULL;
 
     // create the path
@@ -601,9 +601,9 @@ end:
     }
     
     
-    list_free(localVarFormParameters);
+    list_freeList(localVarFormParameters);
     
-    list_free(localVarContentType);
+    list_freeList(localVarContentType);
     free(localVarPath);
     free(localVarToReplace_petId);
     if (keyForm_name) {
@@ -634,9 +634,9 @@ PetAPI_uploadFile(apiClient_t *apiClient, long petId , char * additionalMetadata
 {
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
-    list_t    *localVarFormParameters = list_create();
-    list_t *localVarHeaderType = list_create();
-    list_t *localVarContentType = list_create();
+    list_t    *localVarFormParameters = list_createList();
+    list_t *localVarHeaderType = list_createList();
+    list_t *localVarContentType = list_createList();
     char      *localVarBodyParameters = NULL;
 
     // create the path
@@ -715,9 +715,9 @@ PetAPI_uploadFile(apiClient_t *apiClient, long petId , char * additionalMetadata
     }
     
     
-    list_free(localVarFormParameters);
-    list_free(localVarHeaderType);
-    list_free(localVarContentType);
+    list_freeList(localVarFormParameters);
+    list_freeList(localVarHeaderType);
+    list_freeList(localVarContentType);
     free(localVarPath);
     free(localVarToReplace_petId);
     if (keyForm_additionalMetadata) {
diff --git a/samples/client/petstore/c/api/StoreAPI.c b/samples/client/petstore/c/api/StoreAPI.c
index 80921ad0f07..8086a57a64c 100644
--- a/samples/client/petstore/c/api/StoreAPI.c
+++ b/samples/client/petstore/c/api/StoreAPI.c
@@ -86,7 +86,7 @@ StoreAPI_getInventory(apiClient_t *apiClient)
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -114,7 +114,7 @@ StoreAPI_getInventory(apiClient_t *apiClient)
     //primitive return type not simple
     cJSON *localVarJSON = cJSON_Parse(apiClient->dataReceived);
     cJSON *VarJSON;
-    list_t *elementToReturn = list_create();
+    list_t *elementToReturn = list_createList();
     cJSON_ArrayForEach(VarJSON, localVarJSON){
         keyValuePair_t *keyPair = keyValuePair_create(strdup(VarJSON->string), cJSON_Print(VarJSON));
         list_addElement(elementToReturn, keyPair);
@@ -129,7 +129,7 @@ StoreAPI_getInventory(apiClient_t *apiClient)
     
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     return elementToReturn;
@@ -149,7 +149,7 @@ StoreAPI_getOrderById(apiClient_t *apiClient, long orderId )
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -212,7 +212,7 @@ StoreAPI_getOrderById(apiClient_t *apiClient, long orderId )
     
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     free(localVarToReplace_orderId);
@@ -231,7 +231,7 @@ StoreAPI_placeOrder(apiClient_t *apiClient, order_t * body )
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -286,7 +286,7 @@ StoreAPI_placeOrder(apiClient_t *apiClient, order_t * body )
     
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     if (localVarSingleItemJSON_body) {
diff --git a/samples/client/petstore/c/api/UserAPI.c b/samples/client/petstore/c/api/UserAPI.c
index 33e94203928..de32d2eef0d 100644
--- a/samples/client/petstore/c/api/UserAPI.c
+++ b/samples/client/petstore/c/api/UserAPI.c
@@ -328,7 +328,7 @@ UserAPI_getUserByName(apiClient_t *apiClient, char * username )
     list_t    *localVarQueryParameters = NULL;
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -387,7 +387,7 @@ UserAPI_getUserByName(apiClient_t *apiClient, char * username )
     
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     free(localVarToReplace_username);
@@ -403,10 +403,10 @@ end:
 char*
 UserAPI_loginUser(apiClient_t *apiClient, char * username , char * password )
 {
-    list_t    *localVarQueryParameters = list_create();
+    list_t    *localVarQueryParameters = list_createList();
     list_t    *localVarHeaderParameters = NULL;
     list_t    *localVarFormParameters = NULL;
-    list_t *localVarHeaderType = list_create();
+    list_t *localVarHeaderType = list_createList();
     list_t *localVarContentType = NULL;
     char      *localVarBodyParameters = NULL;
 
@@ -467,10 +467,10 @@ UserAPI_loginUser(apiClient_t *apiClient, char * username , char * password )
         apiClient->dataReceived = NULL;
         apiClient->dataReceivedLen = 0;
     }
-    list_free(localVarQueryParameters);
+    list_freeList(localVarQueryParameters);
     
     
-    list_free(localVarHeaderType);
+    list_freeList(localVarHeaderType);
     
     free(localVarPath);
     if(keyQuery_username){
diff --git a/samples/client/petstore/c/include/list.h b/samples/client/petstore/c/include/list.h
index 4c613214094..96c5832b02b 100644
--- a/samples/client/petstore/c/include/list.h
+++ b/samples/client/petstore/c/include/list.h
@@ -23,8 +23,8 @@ typedef struct list_t {
 
 #define list_ForEach(element, list) for(element = (list != NULL) ? (list)->firstEntry : NULL; element != NULL; element = element->nextListEntry)
 
-list_t* list_create();
-void list_free(list_t* listToFree);
+list_t* List();
+void list_freeListList(list_t* listToFree);
 
 void list_addElement(list_t* list, void* dataToAddInList);
 listEntry_t* list_getElementAt(list_t *list, long indexOfElement);
diff --git a/samples/client/petstore/c/model/pet.c b/samples/client/petstore/c/model/pet.c
index 73e4f3505f8..a9f9c27ee47 100644
--- a/samples/client/petstore/c/model/pet.c
+++ b/samples/client/petstore/c/model/pet.c
@@ -62,14 +62,14 @@ void pet_free(pet_t *pet) {
         list_ForEach(listEntry, pet->photo_urls) {
             free(listEntry->data);
         }
-        list_free(pet->photo_urls);
+        list_freeList(pet->photo_urls);
         pet->photo_urls = NULL;
     }
     if (pet->tags) {
         list_ForEach(listEntry, pet->tags) {
             tag_free(listEntry->data);
         }
-        list_free(pet->tags);
+        list_freeList(pet->tags);
         pet->tags = NULL;
     }
     free(pet);
@@ -210,7 +210,7 @@ pet_t *pet_parseFromJSON(cJSON *petJSON){
     if(!cJSON_IsArray(photo_urls)) {
         goto end;//primitive container
     }
-    photo_urlsList = list_create();
+    photo_urlsList = list_createList();
 
     cJSON_ArrayForEach(photo_urls_local, photo_urls)
     {
@@ -230,7 +230,7 @@ pet_t *pet_parseFromJSON(cJSON *petJSON){
         goto end; //nonprimitive container
     }
 
-    tagsList = list_create();
+    tagsList = list_createList();
 
     cJSON_ArrayForEach(tags_local_nonprimitive,tags )
     {
diff --git a/samples/client/petstore/c/src/apiClient.c b/samples/client/petstore/c/src/apiClient.c
index ce2f522cda2..4ecf10c2b8e 100644
--- a/samples/client/petstore/c/src/apiClient.c
+++ b/samples/client/petstore/c/src/apiClient.c
@@ -46,7 +46,7 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
     apiClient->progress_data = NULL;
     apiClient->response_code = 0;
     if(apiKeys_api_key!= NULL) {
-        apiClient->apiKeys_api_key = list_create();
+        apiClient->apiKeys_api_key = list_createList();
         listEntry_t *listEntry = NULL;
         list_ForEach(listEntry, apiKeys_api_key) {
             keyValuePair_t *pair = listEntry->data;
@@ -80,7 +80,7 @@ void apiClient_free(apiClient_t *apiClient) {
             }
             keyValuePair_free(pair);
         }
-        list_free(apiClient->apiKeys_api_key);
+        list_freeList(apiClient->apiKeys_api_key);
     }
     if(apiClient->accessToken) {
         free(apiClient->accessToken);
@@ -447,7 +447,7 @@ void apiClient_invoke(apiClient_t    *apiClient,
 
         res = curl_easy_perform(handle);
 
-        curl_slist_free_all(headers);
+        curl_slist_freeList_all(headers);
 
         free(targetUrl);
 
diff --git a/samples/client/petstore/c/src/list.c b/samples/client/petstore/c/src/list.c
index dfa2e567501..786812158a2 100644
--- a/samples/client/petstore/c/src/list.c
+++ b/samples/client/petstore/c/src/list.c
@@ -23,7 +23,7 @@ void listEntry_printAsInt(listEntry_t *listEntry, void *additionalData) {
     printf("%i\n", *((int *) (listEntry->data)));
 }
 
-list_t *list_create() {
+list_t *list_createList() {
     list_t *createdList = malloc(sizeof(list_t));
     if(createdList == NULL) {
         // TODO Malloc Failure
@@ -88,7 +88,7 @@ void list_iterateThroughListBackward(list_t *list,
     }
 }
 
-void list_free(list_t *list) {
+void list_freeList(list_t *list) {
     if(list){
         list_iterateThroughListForward(list, listEntry_free, NULL);
         free(list);
@@ -196,5 +196,5 @@ void clear_and_free_string_list(list_t *list)
         free(list_item);
         list_item = NULL;
     }
-    list_free(list);
+    list_freeList(list);
 }
\ No newline at end of file
diff --git a/samples/client/petstore/c/unit-test/test_pet.c b/samples/client/petstore/c/unit-test/test_pet.c
index ba45422f912..1b4f548729a 100644
--- a/samples/client/petstore/c/unit-test/test_pet.c
+++ b/samples/client/petstore/c/unit-test/test_pet.c
@@ -27,8 +27,8 @@ pet_t* instantiate_pet(int include_optional) {
        // false, not to have infinite recursion
       instantiate_category(0),
       "doggie",
-      list_create(),
-      list_create(),
+      list_createList(),
+      list_createList(),
       openapi_petstore_pet_STATUS_available
     );
   } else {
@@ -36,8 +36,8 @@ pet_t* instantiate_pet(int include_optional) {
       56,
       NULL,
       "doggie",
-      list_create(),
-      list_create(),
+      list_createList(),
+      list_createList(),
       openapi_petstore_pet_STATUS_available
     );
   }
diff --git a/samples/client/petstore/c/unit-tests/manual-PetAPI.c b/samples/client/petstore/c/unit-tests/manual-PetAPI.c
index f82c5353891..3090521dc62 100644
--- a/samples/client/petstore/c/unit-tests/manual-PetAPI.c
+++ b/samples/client/petstore/c/unit-tests/manual-PetAPI.c
@@ -36,7 +36,7 @@ int main() {
 	char *exampleUrl2 = malloc(strlen(EXAMPLE_URL_2) + 1);
 	strcpy(exampleUrl2, EXAMPLE_URL_2);
 
-	list_t *photoUrls = list_create();
+	list_t *photoUrls = list_createList();
 
 	list_addElement(photoUrls, exampleUrl1);
 	list_addElement(photoUrls, exampleUrl2);
@@ -49,7 +49,7 @@ int main() {
 	strcpy(exampleTag2Name, EXAMPLE_TAG_2_NAME);
 	tag_t *exampleTag2 = tag_create(EXAMPLE_TAG_2_ID, exampleTag2Name);
 
-	list_t *tags = list_create();
+	list_t *tags = list_createList();
 
 	list_addElement(tags, exampleTag1);
 	list_addElement(tags, exampleTag2);
diff --git a/samples/client/petstore/c/unit-tests/manual-StoreAPI.c b/samples/client/petstore/c/unit-tests/manual-StoreAPI.c
index ce29f77b961..c6e3d3bacb4 100644
--- a/samples/client/petstore/c/unit-tests/manual-StoreAPI.c
+++ b/samples/client/petstore/c/unit-tests/manual-StoreAPI.c
@@ -98,7 +98,7 @@ int main() {
 		free(pair->value);
 		keyValuePair_free(pair);
 	}
-	list_free(elementToReturn);
+	list_freeList(elementToReturn);
 	apiClient_free(apiClient5);
 
 	apiClient_unsetupGlobalEnv();
diff --git a/samples/client/petstore/cpp-tizen/src/PetManager.cpp b/samples/client/petstore/cpp-tizen/src/PetManager.cpp
index 2f273a21e10..01695962eeb 100644
--- a/samples/client/petstore/cpp-tizen/src/PetManager.cpp
+++ b/samples/client/petstore/cpp-tizen/src/PetManager.cpp
@@ -138,7 +138,7 @@ static bool addPetHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = addPetProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -274,7 +274,7 @@ static bool deletePetHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = deletePetProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -418,7 +418,7 @@ static bool findPetsByStatusHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = findPetsByStatusProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -562,7 +562,7 @@ static bool findPetsByTagsHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = findPetsByTagsProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -714,7 +714,7 @@ static bool getPetByIdHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = getPetByIdProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -852,7 +852,7 @@ static bool updatePetHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = updatePetProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -982,7 +982,7 @@ static bool updatePetWithFormHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = updatePetWithFormProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -1134,7 +1134,7 @@ static bool uploadFileHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = uploadFileProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
diff --git a/samples/client/petstore/cpp-tizen/src/RequestInfo.h b/samples/client/petstore/cpp-tizen/src/RequestInfo.h
index 6424d6c856d..02b1f59df74 100644
--- a/samples/client/petstore/cpp-tizen/src/RequestInfo.h
+++ b/samples/client/petstore/cpp-tizen/src/RequestInfo.h
@@ -45,7 +45,7 @@ public:
 
 	~RequestInfo()
 	{
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (this->p_chunk) {
 			if((this->p_chunk)->memory) {
 				free((this->p_chunk)->memory);
diff --git a/samples/client/petstore/cpp-tizen/src/StoreManager.cpp b/samples/client/petstore/cpp-tizen/src/StoreManager.cpp
index e107ff84434..0ae59157af1 100644
--- a/samples/client/petstore/cpp-tizen/src/StoreManager.cpp
+++ b/samples/client/petstore/cpp-tizen/src/StoreManager.cpp
@@ -130,7 +130,7 @@ static bool deleteOrderHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = deleteOrderProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -254,7 +254,7 @@ static bool getInventoryHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = getInventoryProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -406,7 +406,7 @@ static bool getOrderByIdHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = getOrderByIdProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -565,7 +565,7 @@ static bool placeOrderHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = placeOrderProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
diff --git a/samples/client/petstore/cpp-tizen/src/UserManager.cpp b/samples/client/petstore/cpp-tizen/src/UserManager.cpp
index ab3a7e40964..12b3633f5d4 100644
--- a/samples/client/petstore/cpp-tizen/src/UserManager.cpp
+++ b/samples/client/petstore/cpp-tizen/src/UserManager.cpp
@@ -137,7 +137,7 @@ static bool createUserHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = createUserProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -286,7 +286,7 @@ static bool createUsersWithArrayInputHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = createUsersWithArrayInputProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -435,7 +435,7 @@ static bool createUsersWithListInputHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = createUsersWithListInputProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -565,7 +565,7 @@ static bool deleteUserHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = deleteUserProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -717,7 +717,7 @@ static bool getUserByNameHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = getUserByNameProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -866,7 +866,7 @@ static bool loginUserHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = loginUserProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -990,7 +990,7 @@ static bool logoutUserHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = logoutUserProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
@@ -1133,7 +1133,7 @@ static bool updateUserHelper(char * accessToken,
 			mBody, headerList, p_chunk, &code, errormsg);
 		bool retval = updateUserProcessor(*p_chunk, code, errormsg, userData,reinterpret_cast<void(*)()>(handler));
 
-		curl_slist_free_all(headerList);
+		curl_slist_freeList_all(headerList);
 		if (p_chunk) {
 			if(p_chunk->memory) {
 				free(p_chunk->memory);
diff --git a/samples/client/petstore/crystal/pet_compilation_error_spec.cr b/samples/client/petstore/crystal/pet_compilation_error_spec.cr
new file mode 100644
index 00000000000..519cb5b73e3
--- /dev/null
+++ b/samples/client/petstore/crystal/pet_compilation_error_spec.cr
@@ -0,0 +1,11 @@
+require "./spec/spec_helper"
+require "json"
+require "time"
+
+describe Petstore::Pet do
+  describe "test an instance of Pet" do
+    it "should fail to compile if any required properties is missing" do
+      pet = Petstore::Pet.new(id: nil, category: nil, name: nil, photo_urls: Array(String).new, tags: nil, status: nil)
+    end
+  end
+end
diff --git a/samples/client/petstore/crystal/spec/api/pet_api_spec.cr b/samples/client/petstore/crystal/spec/api/pet_api_spec.cr
index 5c5f56295ac..5eb508ebd72 100644
--- a/samples/client/petstore/crystal/spec/api/pet_api_spec.cr
+++ b/samples/client/petstore/crystal/spec/api/pet_api_spec.cr
@@ -29,8 +29,28 @@ describe "PetApi" do
   # @param [Hash] opts the optional parameters
   # @return [Pet]
   describe "add_pet test" do
-    it "should work" do
+    it "should work with only required attributes" do
       # assertion here. ref: https://crystal-lang.org/reference/guides/testing.html
+
+      config = Petstore::Configuration.new
+      config.access_token = "yyy"
+      config.api_key[:api_key] = "xxx"
+      config.api_key_prefix[:api_key] = "Token"
+
+      api_client = Petstore::ApiClient.new(config)
+
+      api_instance = Petstore::PetApi.new(api_client)
+
+      pet_name = "new pet"
+      new_pet = Petstore::Pet.new(id: nil, category: nil, name: pet_name, photo_urls: Array(String).new, tags: nil, status: nil)
+
+      pet = api_instance.add_pet(new_pet)
+      pet.id.should_not be_nil
+      pet.category.should be_nil
+      pet.name.should eq pet_name
+      pet.photo_urls.should eq Array(String).new
+      pet.status.should be_nil
+      pet.tags.should eq Array(Petstore::Tag).new
     end
   end
 
@@ -89,20 +109,17 @@ describe "PetApi" do
 
       api_instance = Petstore::PetApi.new(api_client)
 
-      # create a pet to start with
-      pet_id = Int64.new(91829)
-      pet = Petstore::Pet.new(id: pet_id, category: Petstore::Category.new(id: pet_id + 10, name: "crystal category"), name: "crystal", photo_urls: ["https://crystal-lang.org"], tags: [Petstore::Tag.new(id: pet_id + 100, name: "crystal tag")], status: "available")
-
-      api_instance.add_pet(pet)
+      new_pet = Petstore::Pet.new(id: nil, category: nil, name: "crystal", photo_urls: Array(String).new, tags: nil, status: nil)
 
+      pet = api_instance.add_pet(new_pet)
+      pet_id = pet.id.not_nil!
       result = api_instance.get_pet_by_id(pet_id: pet_id)
       result.id.should eq pet_id
-      result.category.id.should eq pet_id + 10
-      result.category.name.should eq "crystal category"
+      result.category.should be_nil
       result.name.should eq "crystal"
-      result.photo_urls.should eq ["https://crystal-lang.org"]
-      result.status.should eq "available" 
-      result.tags[0].id.should eq pet_id + 100
+      result.photo_urls.should eq Array(String).new
+      result.status.should be_nil
+      result.tags.should eq Array(Petstore::Tag).new
     end
   end
 
diff --git a/samples/client/petstore/crystal/spec/models/pet_spec.cr b/samples/client/petstore/crystal/spec/models/pet_spec.cr
index d3eaf60dfc1..16117449db5 100644
--- a/samples/client/petstore/crystal/spec/models/pet_spec.cr
+++ b/samples/client/petstore/crystal/spec/models/pet_spec.cr
@@ -18,11 +18,49 @@ require "time"
 describe Petstore::Pet do
 
   describe "test an instance of Pet" do
-    it "should create an instance of Pet" do
-      #instance = Petstore::Pet.new
-      #expect(instance).to be_instance_of(Petstore::Pet)
+    it "should fail to compile if any required properties is missing" do
+      assert_compilation_error(path: "./pet_compilation_error_spec.cr", message: "Error: no overload matches 'Petstore::Pet.new', id: Nil, category: Nil, name: Nil, photo_urls: Array(String), tags: Nil, status: Nil")
+    end
+
+    it "should create an instance of Pet with only required properties" do
+      pet = Petstore::Pet.new(id: nil, category: nil, name: "new pet", photo_urls: Array(String).new, tags: nil, status: nil)
+      pet.should be_a(Petstore::Pet)
+    end
+
+    it "should create an instance of Pet with all properties" do
+      pet_id = 12345_i64
+      pet = Petstore::Pet.new(id: pet_id, category: Petstore::Category.new(id: pet_id + 10, name: "crystal category"), name: "crystal", photo_urls: ["https://crystal-lang.org"], tags: [Petstore::Tag.new(id: pet_id + 100, name: "crystal tag")], status: "available")
+      pet.should be_a(Petstore::Pet)
     end
   end
+
+  describe "#from_json" do
+    it "should instantiate a new instance from json string with required properties" do
+      pet = Petstore::Pet.from_json("{\"name\": \"json pet\", \"photoUrls\": []}")
+      pet.should be_a(Petstore::Pet)
+      pet.name.should eq "json pet"
+      pet.photo_urls.should eq Array(String).new
+    end
+
+    it "should raise error when instantiating a new instance from json string with missing required properties" do
+      expect_raises(JSON::SerializableError, "Missing JSON attribute: name") do
+        Petstore::Pet.from_json("{\"photoUrls\": []}")
+      end
+      expect_raises(JSON::SerializableError, "Missing JSON attribute: photoUrls") do
+        Petstore::Pet.from_json("{\"name\": \"json pet\"}")
+      end
+    end
+
+    it "should raise error when instantiating a new instance from json string with required properties set to null value" do
+      expect_raises(JSON::SerializableError, "Expected String but was Null") do
+        Petstore::Pet.from_json("{\"name\": null, \"photoUrls\": []}")
+      end
+      expect_raises(JSON::SerializableError, "Expected BeginArray but was Null") do
+        Petstore::Pet.from_json("{\"name\": \"json pet\", \"photoUrls\": null}")
+      end
+    end
+  end
+
   describe "test attribute 'id'" do
     it "should work" do
       # assertion here. ref: https://crystal-lang.org/reference/guides/testing.html
diff --git a/samples/client/petstore/crystal/spec/models/tag_spec.cr b/samples/client/petstore/crystal/spec/models/tag_spec.cr
index f79e12657fc..64a05f292ce 100644
--- a/samples/client/petstore/crystal/spec/models/tag_spec.cr
+++ b/samples/client/petstore/crystal/spec/models/tag_spec.cr
@@ -23,6 +23,21 @@ describe Petstore::Tag do
       #expect(instance).to be_instance_of(Petstore::Tag)
     end
   end
+
+  describe "test equality of Tag instances" do
+    it "should equal to itself" do
+      tag1 = Petstore::Tag.new(id: 0, name: "same")
+      tag2 = tag1
+      (tag1 == tag2).should be_true
+    end
+
+    it "should equal to another instance with same attributes" do
+      tag1 = Petstore::Tag.new(id: 0, name: "tag")
+      tag2 = Petstore::Tag.new(id: 0, name: "tag")
+      (tag1 == tag2).should be_true
+    end
+  end
+
   describe "test attribute 'id'" do
     it "should work" do
       # assertion here. ref: https://crystal-lang.org/reference/guides/testing.html
diff --git a/samples/client/petstore/crystal/spec/spec_helper.cr b/samples/client/petstore/crystal/spec/spec_helper.cr
index dddb173a221..77abc03f074 100644
--- a/samples/client/petstore/crystal/spec/spec_helper.cr
+++ b/samples/client/petstore/crystal/spec/spec_helper.cr
@@ -11,4 +11,12 @@
 # load modules
 require "spec"
 require "json"
-require "../src/petstore"
\ No newline at end of file
+require "../src/petstore"
+
+def assert_compilation_error(path : String, message : String) : Nil
+  buffer = IO::Memory.new
+  result = Process.run("crystal", ["run", "--no-color", "--no-codegen", path], error: buffer)
+  result.success?.should be_false
+  buffer.to_s.should contain message
+  buffer.close
+end
diff --git a/samples/client/petstore/crystal/src/petstore/api/pet_api.cr b/samples/client/petstore/crystal/src/petstore/api/pet_api.cr
index 89f3ccb2dc5..3fcdb29d46e 100644
--- a/samples/client/petstore/crystal/src/petstore/api/pet_api.cr
+++ b/samples/client/petstore/crystal/src/petstore/api/pet_api.cr
@@ -96,7 +96,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'pet_id' when calling PetApi.delete_pet")
       end
       # resource path
-      local_var_path = "/pet/{petId}".sub("{" + "petId" + "}", URI.encode(pet_id.to_s).gsub("%2F", "/"))
+      local_var_path = "/pet/{petId}".sub("{" + "petId" + "}", URI.encode_path(pet_id.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
@@ -274,7 +274,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'pet_id' when calling PetApi.get_pet_by_id")
       end
       # resource path
-      local_var_path = "/pet/{petId}".sub("{" + "petId" + "}", URI.encode(pet_id.to_s).gsub("%2F", "/"))
+      local_var_path = "/pet/{petId}".sub("{" + "petId" + "}", URI.encode_path(pet_id.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
@@ -390,7 +390,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'pet_id' when calling PetApi.update_pet_with_form")
       end
       # resource path
-      local_var_path = "/pet/{petId}".sub("{" + "petId" + "}", URI.encode(pet_id.to_s).gsub("%2F", "/"))
+      local_var_path = "/pet/{petId}".sub("{" + "petId" + "}", URI.encode_path(pet_id.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
@@ -449,7 +449,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'pet_id' when calling PetApi.upload_file")
       end
       # resource path
-      local_var_path = "/pet/{petId}/uploadImage".sub("{" + "petId" + "}", URI.encode(pet_id.to_s).gsub("%2F", "/"))
+      local_var_path = "/pet/{petId}/uploadImage".sub("{" + "petId" + "}", URI.encode_path(pet_id.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
diff --git a/samples/client/petstore/crystal/src/petstore/api/store_api.cr b/samples/client/petstore/crystal/src/petstore/api/store_api.cr
index 5fc428ac889..55f05dee2c4 100644
--- a/samples/client/petstore/crystal/src/petstore/api/store_api.cr
+++ b/samples/client/petstore/crystal/src/petstore/api/store_api.cr
@@ -39,7 +39,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'order_id' when calling StoreApi.delete_order")
       end
       # resource path
-      local_var_path = "/store/order/{orderId}".sub("{" + "orderId" + "}", URI.encode(order_id.to_s).gsub("%2F", "/"))
+      local_var_path = "/store/order/{orderId}".sub("{" + "orderId" + "}", URI.encode_path(order_id.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
@@ -157,7 +157,7 @@ module Petstore
       end
 
       # resource path
-      local_var_path = "/store/order/{orderId}".sub("{" + "orderId" + "}", URI.encode(order_id.to_s).gsub("%2F", "/"))
+      local_var_path = "/store/order/{orderId}".sub("{" + "orderId" + "}", URI.encode_path(order_id.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
diff --git a/samples/client/petstore/crystal/src/petstore/api/user_api.cr b/samples/client/petstore/crystal/src/petstore/api/user_api.cr
index b31f275d4f3..a346feba7d9 100644
--- a/samples/client/petstore/crystal/src/petstore/api/user_api.cr
+++ b/samples/client/petstore/crystal/src/petstore/api/user_api.cr
@@ -212,7 +212,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'username' when calling UserApi.delete_user")
       end
       # resource path
-      local_var_path = "/user/{username}".sub("{" + "username" + "}", URI.encode(username.to_s).gsub("%2F", "/"))
+      local_var_path = "/user/{username}".sub("{" + "username" + "}", URI.encode_path(username.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
@@ -267,7 +267,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'username' when calling UserApi.get_user_by_name")
       end
       # resource path
-      local_var_path = "/user/{username}".sub("{" + "username" + "}", URI.encode(username.to_s).gsub("%2F", "/"))
+      local_var_path = "/user/{username}".sub("{" + "username" + "}", URI.encode_path(username.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
@@ -451,7 +451,7 @@ module Petstore
         raise ArgumentError.new("Missing the required parameter 'user' when calling UserApi.update_user")
       end
       # resource path
-      local_var_path = "/user/{username}".sub("{" + "username" + "}", URI.encode(username.to_s).gsub("%2F", "/"))
+      local_var_path = "/user/{username}".sub("{" + "username" + "}", URI.encode_path(username.to_s).gsub("%2F", "/"))
 
       # query parameters
       query_params = Hash(String, String).new
diff --git a/samples/client/petstore/crystal/src/petstore/models/api_response.cr b/samples/client/petstore/crystal/src/petstore/models/api_response.cr
index cc4534fdcc8..3e35df30b72 100644
--- a/samples/client/petstore/crystal/src/petstore/models/api_response.cr
+++ b/samples/client/petstore/crystal/src/petstore/models/api_response.cr
@@ -16,14 +16,15 @@ module Petstore
   class ApiResponse
     include JSON::Serializable
 
-    @[JSON::Field(key: "code", type: Int32)]
-    property code : Int32
+    # Optional properties
+    @[JSON::Field(key: "code", type: Int32?, nillable: true, emit_null: false)]
+    property code : Int32?
 
-    @[JSON::Field(key: "type", type: String)]
-    property _type : String
+    @[JSON::Field(key: "type", type: String?, nillable: true, emit_null: false)]
+    property _type : String?
 
-    @[JSON::Field(key: "message", type: String)]
-    property message : String
+    @[JSON::Field(key: "message", type: String?, nillable: true, emit_null: false)]
+    property message : String?
 
     # Initializes the object
     # @param [Hash] attributes Model attributes in the form of hash
@@ -46,7 +47,7 @@ module Petstore
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class &&
           code == o.code &&
           _type == o._type &&
diff --git a/samples/client/petstore/crystal/src/petstore/models/category.cr b/samples/client/petstore/crystal/src/petstore/models/category.cr
index b2aa4b5640c..6cda6b4cb20 100644
--- a/samples/client/petstore/crystal/src/petstore/models/category.cr
+++ b/samples/client/petstore/crystal/src/petstore/models/category.cr
@@ -16,11 +16,12 @@ module Petstore
   class Category
     include JSON::Serializable
 
-    @[JSON::Field(key: "id", type: Int64)]
-    property id : Int64
+    # Optional properties
+    @[JSON::Field(key: "id", type: Int64?, nillable: true, emit_null: false)]
+    property id : Int64?
 
-    @[JSON::Field(key: "name", type: String)]
-    property name : String
+    @[JSON::Field(key: "name", type: String?, nillable: true, emit_null: false)]
+    property name : String?
 
     # Initializes the object
     # @param [Hash] attributes Model attributes in the form of hash
@@ -60,7 +61,7 @@ module Petstore
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class &&
           id == o.id &&
           name == o.name
diff --git a/samples/client/petstore/crystal/src/petstore/models/order.cr b/samples/client/petstore/crystal/src/petstore/models/order.cr
index e513dc992e0..88967c7351d 100644
--- a/samples/client/petstore/crystal/src/petstore/models/order.cr
+++ b/samples/client/petstore/crystal/src/petstore/models/order.cr
@@ -16,24 +16,25 @@ module Petstore
   class Order
     include JSON::Serializable
 
-    @[JSON::Field(key: "id", type: Int64)]
-    property id : Int64
+    # Optional properties
+    @[JSON::Field(key: "id", type: Int64?, nillable: true, emit_null: false)]
+    property id : Int64?
 
-    @[JSON::Field(key: "petId", type: Int64)]
-    property pet_id : Int64
+    @[JSON::Field(key: "petId", type: Int64?, nillable: true, emit_null: false)]
+    property pet_id : Int64?
 
-    @[JSON::Field(key: "quantity", type: Int32)]
-    property quantity : Int32
+    @[JSON::Field(key: "quantity", type: Int32?, nillable: true, emit_null: false)]
+    property quantity : Int32?
 
-    @[JSON::Field(key: "shipDate", type: Time)]
-    property ship_date : Time
+    @[JSON::Field(key: "shipDate", type: Time?, nillable: true, emit_null: false)]
+    property ship_date : Time?
 
     # Order Status
-    @[JSON::Field(key: "status", type: String)]
-    property status : String
+    @[JSON::Field(key: "status", type: String?, nillable: true, emit_null: false)]
+    property status : String?
 
-    @[JSON::Field(key: "complete", type: Bool, default: false)]
-    property complete : Bool
+    @[JSON::Field(key: "complete", type: Bool?, default: false, nillable: true, emit_null: false)]
+    property complete : Bool?
 
     class EnumAttributeValidator
       getter datatype : String
@@ -91,7 +92,7 @@ module Petstore
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class &&
           id == o.id &&
           pet_id == o.pet_id &&
diff --git a/samples/client/petstore/crystal/src/petstore/models/pet.cr b/samples/client/petstore/crystal/src/petstore/models/pet.cr
index cd8ba950b95..ef8676c085c 100644
--- a/samples/client/petstore/crystal/src/petstore/models/pet.cr
+++ b/samples/client/petstore/crystal/src/petstore/models/pet.cr
@@ -16,24 +16,26 @@ module Petstore
   class Pet
     include JSON::Serializable
 
-    @[JSON::Field(key: "id", type: Int64)]
-    property id : Int64
-
-    @[JSON::Field(key: "category", type: Category)]
-    property category : Category
-
-    @[JSON::Field(key: "name", type: String)]
+    # Required properties
+    @[JSON::Field(key: "name", type: String, nillable: false, emit_null: false)]
     property name : String
 
-    @[JSON::Field(key: "photoUrls", type: Array(String))]
+    @[JSON::Field(key: "photoUrls", type: Array(String), nillable: false, emit_null: false)]
     property photo_urls : Array(String)
 
-    @[JSON::Field(key: "tags", type: Array(Tag))]
-    property tags : Array(Tag)
+    # Optional properties
+    @[JSON::Field(key: "id", type: Int64?, nillable: true, emit_null: false)]
+    property id : Int64?
+
+    @[JSON::Field(key: "category", type: Category?, nillable: true, emit_null: false)]
+    property category : Category?
+
+    @[JSON::Field(key: "tags", type: Array(Tag)?, nillable: true, emit_null: false)]
+    property tags : Array(Tag)?
 
     # pet status in the store
-    @[JSON::Field(key: "status", type: String)]
-    property status : String
+    @[JSON::Field(key: "status", type: String?, nillable: true, emit_null: false)]
+    property status : String?
 
     class EnumAttributeValidator
       getter datatype : String
@@ -60,29 +62,19 @@ module Petstore
 
     # Initializes the object
     # @param [Hash] attributes Model attributes in the form of hash
-    def initialize(@id : Int64?, @category : Category?, @name : String, @photo_urls : Array(String), @tags : Array(Tag)?, @status : String?)
+    def initialize(@name : String, @photo_urls : Array(String), @id : Int64?, @category : Category?, @tags : Array(Tag)?, @status : String?)
     end
 
     # Show invalid properties with the reasons. Usually used together with valid?
     # @return Array for valid properties with the reasons
     def list_invalid_properties
       invalid_properties = Array(String).new
-      if @name.nil?
-        invalid_properties.push("invalid value for \"name\", name cannot be nil.")
-      end
-
-      if @photo_urls.nil?
-        invalid_properties.push("invalid value for \"photo_urls\", photo_urls cannot be nil.")
-      end
-
       invalid_properties
     end
 
     # Check to see if the all the properties in the model are valid
     # @return true if the model is valid
     def valid?
-      return false if @name.nil?
-      return false if @photo_urls.nil?
       status_validator = EnumAttributeValidator.new("String", ["available", "pending", "sold"])
       return false unless status_validator.valid?(@status)
       true
@@ -101,7 +93,7 @@ module Petstore
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class &&
           id == o.id &&
           category == o.category &&
diff --git a/samples/client/petstore/crystal/src/petstore/models/tag.cr b/samples/client/petstore/crystal/src/petstore/models/tag.cr
index f8a78fff116..f9bc50f9e21 100644
--- a/samples/client/petstore/crystal/src/petstore/models/tag.cr
+++ b/samples/client/petstore/crystal/src/petstore/models/tag.cr
@@ -16,11 +16,12 @@ module Petstore
   class Tag
     include JSON::Serializable
 
-    @[JSON::Field(key: "id", type: Int64)]
-    property id : Int64
+    # Optional properties
+    @[JSON::Field(key: "id", type: Int64?, nillable: true, emit_null: false)]
+    property id : Int64?
 
-    @[JSON::Field(key: "name", type: String)]
-    property name : String
+    @[JSON::Field(key: "name", type: String?, nillable: true, emit_null: false)]
+    property name : String?
 
     # Initializes the object
     # @param [Hash] attributes Model attributes in the form of hash
@@ -43,7 +44,7 @@ module Petstore
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class &&
           id == o.id &&
           name == o.name
diff --git a/samples/client/petstore/crystal/src/petstore/models/user.cr b/samples/client/petstore/crystal/src/petstore/models/user.cr
index f6d4d2802c2..047e21f7433 100644
--- a/samples/client/petstore/crystal/src/petstore/models/user.cr
+++ b/samples/client/petstore/crystal/src/petstore/models/user.cr
@@ -16,30 +16,31 @@ module Petstore
   class User
     include JSON::Serializable
 
-    @[JSON::Field(key: "id", type: Int64)]
-    property id : Int64
+    # Optional properties
+    @[JSON::Field(key: "id", type: Int64?, nillable: true, emit_null: false)]
+    property id : Int64?
 
-    @[JSON::Field(key: "username", type: String)]
-    property username : String
+    @[JSON::Field(key: "username", type: String?, nillable: true, emit_null: false)]
+    property username : String?
 
-    @[JSON::Field(key: "firstName", type: String)]
-    property first_name : String
+    @[JSON::Field(key: "firstName", type: String?, nillable: true, emit_null: false)]
+    property first_name : String?
 
-    @[JSON::Field(key: "lastName", type: String)]
-    property last_name : String
+    @[JSON::Field(key: "lastName", type: String?, nillable: true, emit_null: false)]
+    property last_name : String?
 
-    @[JSON::Field(key: "email", type: String)]
-    property email : String
+    @[JSON::Field(key: "email", type: String?, nillable: true, emit_null: false)]
+    property email : String?
 
-    @[JSON::Field(key: "password", type: String)]
-    property password : String
+    @[JSON::Field(key: "password", type: String?, nillable: true, emit_null: false)]
+    property password : String?
 
-    @[JSON::Field(key: "phone", type: String)]
-    property phone : String
+    @[JSON::Field(key: "phone", type: String?, nillable: true, emit_null: false)]
+    property phone : String?
 
     # User Status
-    @[JSON::Field(key: "userStatus", type: Int32)]
-    property user_status : Int32
+    @[JSON::Field(key: "userStatus", type: Int32?, nillable: true, emit_null: false)]
+    property user_status : Int32?
 
     # Initializes the object
     # @param [Hash] attributes Model attributes in the form of hash
@@ -62,7 +63,7 @@ module Petstore
     # Checks equality by comparing each attribute.
     # @param [Object] Object to be compared
     def ==(o)
-      return true if self.equal?(o)
+      return true if self.same?(o)
       self.class == o.class &&
           id == o.id &&
           username == o.username &&
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/FakeApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/FakeApi.md
index 87c4c957148..8a5cb9aaf42 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/FakeApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/FakeApi.md
@@ -251,7 +251,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -321,7 +321,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -669,20 +669,20 @@ namespace Example
             config.Password = "YOUR_PASSWORD";
 
             var apiInstance = new FakeApi(config);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // System.IO.Stream | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse(""2010-02-01T10:20:10.111110+01:00"");  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -767,13 +767,13 @@ namespace Example
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -856,10 +856,10 @@ namespace Example
             var apiInstance = new FakeApi(config);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1000,8 +1000,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/PetApi.md
index aa5cd9f497b..f429575063c 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/PetApi.md
@@ -112,8 +112,8 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -339,7 +339,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -486,9 +486,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -561,9 +561,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
@@ -637,9 +637,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // System.IO.Stream | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/StoreApi.md
index 24e2480d5de..963ecda9c14 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/StoreApi.md
@@ -35,7 +35,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -178,7 +178,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/UserApi.md
index aa12c26c69f..2f478081dc2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/docs/UserApi.md
@@ -245,7 +245,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -314,7 +314,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -385,8 +385,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index d58f7e14d8d..a68e9179c81 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <AssemblyName>Org.OpenAPITools.Test</AssemblyName>
     <RootNamespace>Org.OpenAPITools.Test</RootNamespace>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/FakeApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/FakeApi.cs
index 57a99469634..5f1dae74c24 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/FakeApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/FakeApi.cs
@@ -2188,7 +2188,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2336,7 +2336,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2634,7 +2634,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2724,7 +2724,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/PetApi.cs
index 39d2e425e63..b42f2c168ba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Api/PetApi.cs
@@ -633,7 +633,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -723,7 +723,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -793,7 +793,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -865,7 +865,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -954,7 +954,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1045,7 +1045,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1136,7 +1136,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1229,7 +1229,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1451,7 +1451,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1541,7 +1541,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1618,7 +1618,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1697,7 +1697,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1776,7 +1776,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1857,7 +1857,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1939,7 +1939,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2023,7 +2023,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs
index ab6f1f72507..96ed4f89595 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -370,12 +370,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index 4bc467ffa40..cbee70bca37 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
index f3eaf3c5ade..6a8f9c8dc01 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
@@ -749,15 +749,6 @@ namespace Org.OpenAPITools.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RequestOptions.cs
index 7a1d5b97a88..68cd1637590 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..91bc7cc6d54 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index c445b1abb7c..ea3a254a4d2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-ConditionalSerialization/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/FakeApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/FakeApi.md
index 635f38544d5..42e8aea5310 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/FakeApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/FakeApi.md
@@ -267,7 +267,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -341,7 +341,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -555,7 +555,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -709,20 +709,20 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // FileParameter | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // FileParameter | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse(""2010-02-01T10:20:10.111110+01:00"");  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -811,13 +811,13 @@ namespace Example
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -904,10 +904,10 @@ namespace Example
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1056,8 +1056,8 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new FakeApi(httpClient, config, httpClientHandler);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/PetApi.md
index 43033c45b59..505380841a6 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/PetApi.md
@@ -120,8 +120,8 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new PetApi(httpClient, config, httpClientHandler);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -359,7 +359,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new PetApi(httpClient, config, httpClientHandler);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -514,9 +514,9 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new PetApi(httpClient, config, httpClientHandler);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -593,9 +593,9 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new PetApi(httpClient, config, httpClientHandler);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // FileParameter | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // FileParameter | file to upload (optional) 
 
             try
             {
@@ -673,9 +673,9 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new PetApi(httpClient, config, httpClientHandler);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // FileParameter | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // FileParameter | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/StoreApi.md
index 248bf31f849..44bf0ce59ea 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/StoreApi.md
@@ -39,7 +39,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new StoreApi(httpClient, config, httpClientHandler);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -190,7 +190,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new StoreApi(httpClient, config, httpClientHandler);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/UserApi.md
index 417d9002cf9..fe9ac2db818 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/docs/UserApi.md
@@ -261,7 +261,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new UserApi(httpClient, config, httpClientHandler);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -334,7 +334,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new UserApi(httpClient, config, httpClientHandler);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -409,8 +409,8 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new UserApi(httpClient, config, httpClientHandler);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -555,7 +555,7 @@ namespace Example
             HttpClient httpClient = new HttpClient();
             HttpClientHandler httpClientHandler = new HttpClientHandler();
             var apiInstance = new UserApi(httpClient, config, httpClientHandler);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/FakeApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/FakeApi.cs
index b43035fbb26..542c9dadd54 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/FakeApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/FakeApi.cs
@@ -2121,7 +2121,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2258,7 +2258,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2533,7 +2533,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2616,7 +2616,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/PetApi.cs
index f38f7cb7557..a4ab1260df9 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Api/PetApi.cs
@@ -719,7 +719,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -800,7 +800,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -862,7 +862,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -927,7 +927,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1006,7 +1006,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1088,7 +1088,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1169,7 +1169,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1253,7 +1253,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1450,7 +1450,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1531,7 +1531,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1600,7 +1600,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1672,7 +1672,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1743,7 +1743,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1817,7 +1817,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1889,7 +1889,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1964,7 +1964,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/ApiClient.cs
index b6d9195b3f6..997930301f6 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -277,10 +277,12 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var content = new StreamContent(fileParam.Value.Content);
-                    content.Headers.ContentType = new MediaTypeHeaderValue(fileParam.Value.ContentType);
-                    multipartContent.Add(content, fileParam.Key,
-                        fileParam.Value.Name);
+                    foreach (var file in fileParam.Value)
+                    {
+                        var content = new StreamContent(file.Content);
+                        content.Headers.ContentType = new MediaTypeHeaderValue(file.ContentType);
+                        multipartContent.Add(content, fileParam.Key, file.Name);
+                    }
                 }
             }
             return multipartContent;
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index 4bc467ffa40..cbee70bca37 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
index f3eaf3c5ade..6a8f9c8dc01 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
@@ -749,15 +749,6 @@ namespace Org.OpenAPITools.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RequestOptions.cs
index 91a5fbf28f3..70b67cb2590 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, FileParameter> FileParameters { get; set; }
+        public Multimap<string, FileParameter> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, FileParameter>();
+            FileParameters = new Multimap<string, FileParameter>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index 285b6dac105..139ef334aa0 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using System.Net.Http;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 0b425a6b53a..2d4de6e7ccc 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-httpclient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/FakeApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/FakeApi.md
index 87c4c957148..8a5cb9aaf42 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/FakeApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/FakeApi.md
@@ -251,7 +251,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -321,7 +321,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -669,20 +669,20 @@ namespace Example
             config.Password = "YOUR_PASSWORD";
 
             var apiInstance = new FakeApi(config);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // System.IO.Stream | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse(""2010-02-01T10:20:10.111110+01:00"");  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -767,13 +767,13 @@ namespace Example
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -856,10 +856,10 @@ namespace Example
             var apiInstance = new FakeApi(config);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1000,8 +1000,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/PetApi.md
index aa5cd9f497b..f429575063c 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/PetApi.md
@@ -112,8 +112,8 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -339,7 +339,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -486,9 +486,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -561,9 +561,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
@@ -637,9 +637,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // System.IO.Stream | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/StoreApi.md
index 24e2480d5de..963ecda9c14 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/StoreApi.md
@@ -35,7 +35,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -178,7 +178,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/UserApi.md
index aa12c26c69f..2f478081dc2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/docs/UserApi.md
@@ -245,7 +245,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -314,7 +314,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -385,8 +385,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/FakeApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/FakeApi.cs
index 57a99469634..5f1dae74c24 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/FakeApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/FakeApi.cs
@@ -2188,7 +2188,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2336,7 +2336,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2634,7 +2634,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2724,7 +2724,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/PetApi.cs
index 39d2e425e63..b42f2c168ba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Api/PetApi.cs
@@ -633,7 +633,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -723,7 +723,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -793,7 +793,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -865,7 +865,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -954,7 +954,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1045,7 +1045,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1136,7 +1136,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1229,7 +1229,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1451,7 +1451,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1541,7 +1541,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1618,7 +1618,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1697,7 +1697,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1776,7 +1776,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1857,7 +1857,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1939,7 +1939,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2023,7 +2023,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/ApiClient.cs
index 6f26226ea86..ffb05840d5b 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -371,12 +371,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index 4bc467ffa40..cbee70bca37 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
index f3eaf3c5ade..6a8f9c8dc01 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
@@ -749,15 +749,6 @@ namespace Org.OpenAPITools.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RequestOptions.cs
index 7a1d5b97a88..68cd1637590 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..91bc7cc6d54 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 74dc32216c8..5e0f256b4cc 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
     <TargetFramework>net47</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/FakeApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/FakeApi.md
index 87c4c957148..8a5cb9aaf42 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/FakeApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/FakeApi.md
@@ -251,7 +251,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -321,7 +321,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -669,20 +669,20 @@ namespace Example
             config.Password = "YOUR_PASSWORD";
 
             var apiInstance = new FakeApi(config);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // System.IO.Stream | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse(""2010-02-01T10:20:10.111110+01:00"");  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -767,13 +767,13 @@ namespace Example
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -856,10 +856,10 @@ namespace Example
             var apiInstance = new FakeApi(config);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1000,8 +1000,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/PetApi.md
index aa5cd9f497b..f429575063c 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/PetApi.md
@@ -112,8 +112,8 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -339,7 +339,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -486,9 +486,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -561,9 +561,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
@@ -637,9 +637,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // System.IO.Stream | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/StoreApi.md
index 24e2480d5de..963ecda9c14 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/StoreApi.md
@@ -35,7 +35,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -178,7 +178,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/UserApi.md
index aa12c26c69f..2f478081dc2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/docs/UserApi.md
@@ -245,7 +245,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -314,7 +314,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -385,8 +385,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/FakeApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/FakeApi.cs
index 57a99469634..5f1dae74c24 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/FakeApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/FakeApi.cs
@@ -2188,7 +2188,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2336,7 +2336,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2634,7 +2634,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2724,7 +2724,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/PetApi.cs
index 39d2e425e63..b42f2c168ba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Api/PetApi.cs
@@ -633,7 +633,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -723,7 +723,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -793,7 +793,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -865,7 +865,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -954,7 +954,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1045,7 +1045,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1136,7 +1136,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1229,7 +1229,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1451,7 +1451,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1541,7 +1541,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1618,7 +1618,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1697,7 +1697,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1776,7 +1776,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1857,7 +1857,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1939,7 +1939,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2023,7 +2023,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/ApiClient.cs
index 6f26226ea86..ffb05840d5b 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -371,12 +371,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index 4bc467ffa40..cbee70bca37 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
index f3eaf3c5ade..6a8f9c8dc01 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
@@ -749,15 +749,6 @@ namespace Org.OpenAPITools.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RequestOptions.cs
index 7a1d5b97a88..68cd1637590 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..91bc7cc6d54 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index d2fb8de6981..40cff9b3c47 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient-net5.0/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
     <TargetFramework>net5.0</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/FakeApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/FakeApi.md
index 87c4c957148..8a5cb9aaf42 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/FakeApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/FakeApi.md
@@ -251,7 +251,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -321,7 +321,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -669,20 +669,20 @@ namespace Example
             config.Password = "YOUR_PASSWORD";
 
             var apiInstance = new FakeApi(config);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // System.IO.Stream | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse(""2010-02-01T10:20:10.111110+01:00"");  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -767,13 +767,13 @@ namespace Example
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -856,10 +856,10 @@ namespace Example
             var apiInstance = new FakeApi(config);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1000,8 +1000,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/PetApi.md
index aa5cd9f497b..f429575063c 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/PetApi.md
@@ -112,8 +112,8 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -339,7 +339,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -486,9 +486,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -561,9 +561,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
@@ -637,9 +637,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // System.IO.Stream | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/StoreApi.md
index 24e2480d5de..963ecda9c14 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/StoreApi.md
@@ -35,7 +35,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -178,7 +178,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/UserApi.md
index aa12c26c69f..2f478081dc2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/docs/UserApi.md
@@ -245,7 +245,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -314,7 +314,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -385,8 +385,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/FakeApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/FakeApi.cs
index 57a99469634..5f1dae74c24 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/FakeApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/FakeApi.cs
@@ -2188,7 +2188,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2336,7 +2336,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2634,7 +2634,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2724,7 +2724,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/PetApi.cs
index 39d2e425e63..b42f2c168ba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Api/PetApi.cs
@@ -633,7 +633,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -723,7 +723,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -793,7 +793,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -865,7 +865,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -954,7 +954,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1045,7 +1045,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1136,7 +1136,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1229,7 +1229,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1451,7 +1451,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1541,7 +1541,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1618,7 +1618,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1697,7 +1697,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1776,7 +1776,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1857,7 +1857,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1939,7 +1939,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2023,7 +2023,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/ApiClient.cs
index ab6f1f72507..96ed4f89595 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -370,12 +370,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index 4bc467ffa40..cbee70bca37 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
index f3eaf3c5ade..6a8f9c8dc01 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
@@ -749,15 +749,6 @@ namespace Org.OpenAPITools.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RequestOptions.cs
index 7a1d5b97a88..68cd1637590 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..91bc7cc6d54 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index c445b1abb7c..ea3a254a4d2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
     <TargetFramework>netstandard2.0</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/FakeApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/FakeApi.md
index 87c4c957148..8a5cb9aaf42 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/FakeApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/FakeApi.md
@@ -251,7 +251,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -321,7 +321,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -669,20 +669,20 @@ namespace Example
             config.Password = "YOUR_PASSWORD";
 
             var apiInstance = new FakeApi(config);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // System.IO.Stream | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse(""2010-02-01T10:20:10.111110+01:00"");  // DateTime? | None (optional)  (default to "2010-02-01T10:20:10.111110+01:00")
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -767,13 +767,13 @@ namespace Example
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -856,10 +856,10 @@ namespace Example
             var apiInstance = new FakeApi(config);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1000,8 +1000,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(config);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/PetApi.md
index aa5cd9f497b..f429575063c 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/PetApi.md
@@ -112,8 +112,8 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -339,7 +339,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -486,9 +486,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -561,9 +561,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
@@ -637,9 +637,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // System.IO.Stream | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/StoreApi.md
index 24e2480d5de..963ecda9c14 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/StoreApi.md
@@ -35,7 +35,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -178,7 +178,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/UserApi.md
index aa12c26c69f..2f478081dc2 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/docs/UserApi.md
@@ -245,7 +245,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -314,7 +314,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -385,8 +385,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -523,7 +523,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index d1694dcffd1..ac868f2e6ba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -10,7 +10,7 @@ OpenAPI spec version: 1.0.0
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/FakeApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/FakeApi.cs
index 57a99469634..5f1dae74c24 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/FakeApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/FakeApi.cs
@@ -2188,7 +2188,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2336,7 +2336,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (http_basic_test) required
             // http basic authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password))
+            if (!string.IsNullOrEmpty(this.Configuration.Username) || !string.IsNullOrEmpty(this.Configuration.Password) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Basic " + Org.OpenAPITools.Client.ClientUtils.Base64Encode(this.Configuration.Username + ":" + this.Configuration.Password));
             }
@@ -2634,7 +2634,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2724,7 +2724,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (bearer_test) required
             // bearer authentication required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/PetApi.cs
index 39d2e425e63..b42f2c168ba 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Api/PetApi.cs
@@ -633,7 +633,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -723,7 +723,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -793,7 +793,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -865,7 +865,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -954,7 +954,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1045,7 +1045,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1136,7 +1136,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1229,7 +1229,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1451,7 +1451,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1541,7 +1541,7 @@ namespace Org.OpenAPITools.Api
             }
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1618,7 +1618,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1697,7 +1697,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1776,7 +1776,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1857,7 +1857,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1939,7 +1939,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -2023,7 +2023,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/ApiClient.cs
index 6f26226ea86..ffb05840d5b 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -371,12 +371,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index 4bc467ffa40..cbee70bca37 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
index f3eaf3c5ade..6a8f9c8dc01 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/HttpSigningConfiguration.cs
@@ -749,15 +749,6 @@ namespace Org.OpenAPITools.Client
             {
                 keyType = PrivateKeyType.ECDSA;
             }
-            else if (key[0].Contains(ecPrivateKeyHeader) &&
-                key[key.Length - 1].ToString().Contains(ecPrivateKeyFooter))
-            {
-
-                // this type of key can hold many type different types of private key, but here due lack of pem header
-                // Considering this as EC key
-                //TODO :- update the key based on oid
-                keyType = PrivateKeyType.ECDSA;
-            }
             else
             {
                 throw new Exception("Either the key is invalid or key is not supported");
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RequestOptions.cs
index 7a1d5b97a88..68cd1637590 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..91bc7cc6d54 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index 19789c35952..8e1483670bb 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCore/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
-    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
     <OutputType>Library</OutputType>
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/PetApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/PetApi.md
index 4baa360aa75..109fec4f411 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/PetApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/PetApi.md
@@ -113,8 +113,8 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -340,7 +340,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -489,9 +489,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -564,9 +564,9 @@ namespace Example
             config.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(config);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/StoreApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/StoreApi.md
index 8b1ba130f4c..a3c7f1f92be 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/StoreApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/StoreApi.md
@@ -35,7 +35,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -178,7 +178,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io/v2";
             var apiInstance = new StoreApi(config);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/UserApi.md b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/UserApi.md
index b7d26019ae9..39895547686 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/UserApi.md
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/docs/UserApi.md
@@ -265,7 +265,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -334,7 +334,7 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -405,8 +405,8 @@ namespace Example
             Configuration config = new Configuration();
             config.BasePath = "http://petstore.swagger.io/v2";
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -553,7 +553,7 @@ namespace Example
             // config.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new UserApi(config);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
index bc9730b0366..f75257161b7 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <AssemblyName>Org.OpenAPITools.Test</AssemblyName>
     <RootNamespace>Org.OpenAPITools.Test</RootNamespace>
-    <TargetFrameworks>netcoreapp3.0;netcoreapp3.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net47</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Api/PetApi.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Api/PetApi.cs
index 08b2900cec6..3912ab8d5f7 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Api/PetApi.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Api/PetApi.cs
@@ -571,7 +571,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -648,7 +648,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -718,7 +718,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -790,7 +790,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -863,7 +863,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -938,7 +938,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1013,7 +1013,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1090,7 +1090,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1299,7 +1299,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1376,7 +1376,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1453,7 +1453,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1532,7 +1532,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1611,7 +1611,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
@@ -1692,7 +1692,7 @@ namespace Org.OpenAPITools.Api
 
             // authentication (petstore_auth) required
             // oauth required
-            if (!string.IsNullOrEmpty(this.Configuration.AccessToken))
+            if (!string.IsNullOrEmpty(this.Configuration.AccessToken) && !localVarRequestOptions.HeaderParameters.ContainsKey("Authorization"))
             {
                 localVarRequestOptions.HeaderParameters.Add("Authorization", "Bearer " + this.Configuration.AccessToken);
             }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/ApiClient.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/ApiClient.cs
index 62f6adbb205..bf0d7413615 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/ApiClient.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/ApiClient.cs
@@ -370,12 +370,15 @@ namespace Org.OpenAPITools.Client
             {
                 foreach (var fileParam in options.FileParameters)
                 {
-                    var bytes = ClientUtils.ReadAsBytes(fileParam.Value);
-                    var fileStream = fileParam.Value as FileStream;
-                    if (fileStream != null)
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
-                    else
-                        request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    foreach (var file in fileParam.Value)
+                    {
+                        var bytes = ClientUtils.ReadAsBytes(file);
+                        var fileStream = file as FileStream;
+                        if (fileStream != null)
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, System.IO.Path.GetFileName(fileStream.Name)));
+                        else
+                            request.Files.Add(FileParameter.Create(fileParam.Key, bytes, "no_file_name_provided"));
+                    }
                 }
             }
 
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
index e1c00c89a03..add21c02cd1 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/GlobalConfiguration.cs
@@ -64,4 +64,4 @@ namespace Org.OpenAPITools.Client
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RequestOptions.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RequestOptions.cs
index c6b3ccc38f2..b21e8c5ffcd 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RequestOptions.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RequestOptions.cs
@@ -46,7 +46,7 @@ namespace Org.OpenAPITools.Client
         /// <summary>
         /// File parameters to be sent along with the request.
         /// </summary>
-        public Dictionary<string, Stream> FileParameters { get; set; }
+        public Multimap<string, Stream> FileParameters { get; set; }
 
         /// <summary>
         /// Cookies to be sent along with the request.
@@ -67,7 +67,7 @@ namespace Org.OpenAPITools.Client
             QueryParameters = new Multimap<string, string>();
             HeaderParameters = new Multimap<string, string>();
             FormParameters = new Dictionary<string, string>();
-            FileParameters = new Dictionary<string, Stream>();
+            FileParameters = new Multimap<string, Stream>();
             Cookies = new List<Cookie>();
         }
     }
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RetryConfiguration.cs b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RetryConfiguration.cs
index c93633a36d9..92d8f878ca0 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RetryConfiguration.cs
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Client/RetryConfiguration.cs
@@ -1,3 +1,13 @@
+/*
+ * OpenAPI Petstore
+ *
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * Generated by: https://github.com/openapitools/openapi-generator.git
+ */
+
+
 using Polly;
 using RestSharp;
 
@@ -6,7 +16,7 @@ namespace Org.OpenAPITools.Client
     /// <summary>
     /// Configuration class to set the polly retry policies to be applied to the requests.
     /// </summary>
-    public class RetryConfiguration
+    public static class RetryConfiguration
     {
         /// <summary>
         /// Retry policy
diff --git a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
index eaf3365f5f6..fd30b32a72f 100644
--- a/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ b/samples/client/petstore/csharp-netcore/OpenAPIClientCoreAndNet47/src/Org.OpenAPITools/Org.OpenAPITools.csproj
@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
-    <TargetFrameworks>netstandard2.1;netcoreapp3.0</TargetFrameworks>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo><!-- setting GenerateAssemblyInfo to false causes this bug https://github.com/dotnet/project-system/issues/3934 -->
+    <TargetFrameworks>netstandard2.1;net47</TargetFrameworks>
     <AssemblyName>Org.OpenAPITools</AssemblyName>
     <PackageId>Org.OpenAPITools</PackageId>
     <OutputType>Library</OutputType>
diff --git a/samples/client/petstore/csharp/OpenAPIClient/docs/FakeApi.md b/samples/client/petstore/csharp/OpenAPIClient/docs/FakeApi.md
index b38dea5dd37..93a9e0afbf0 100644
--- a/samples/client/petstore/csharp/OpenAPIClient/docs/FakeApi.md
+++ b/samples/client/petstore/csharp/OpenAPIClient/docs/FakeApi.md
@@ -119,8 +119,8 @@ namespace Example
 
             var apiInstance = new FakeApi(Configuration.Default);
             var pet = new Pet(); // Pet | Pet object that needs to be added to the store
-            var query1 = query1_example;  // string | query parameter (optional) 
-            var header1 = header1_example;  // string | header parameter (optional) 
+            var query1 = "query1_example";  // string | query parameter (optional) 
+            var header1 = "header1_example";  // string | header parameter (optional) 
 
             try
             {
@@ -347,7 +347,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(Configuration.Default);
-            var body = 8.14;  // decimal? | Input number as post body (optional) 
+            var body = 8.14D;  // decimal? | Input number as post body (optional) 
 
             try
             {
@@ -422,7 +422,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(Configuration.Default);
-            var body = body_example;  // string | Input string as post body (optional) 
+            var body = "body_example";  // string | Input string as post body (optional) 
 
             try
             {
@@ -572,7 +572,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(Configuration.Default);
-            var body = BINARY_DATA_HERE;  // System.IO.Stream | image to upload
+            var body = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | image to upload
 
             try
             {
@@ -718,7 +718,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(Configuration.Default);
-            var query = query_example;  // string | 
+            var query = "query_example";  // string | 
             var user = new User(); // User | 
 
             try
@@ -874,20 +874,20 @@ namespace Example
             Configuration.Default.Password = "YOUR_PASSWORD";
 
             var apiInstance = new FakeApi(Configuration.Default);
-            var number = 8.14;  // decimal | None
+            var number = 8.14D;  // decimal | None
             var _double = 1.2D;  // double | None
-            var patternWithoutDelimiter = patternWithoutDelimiter_example;  // string | None
-            var _byte = BYTE_ARRAY_DATA_HERE;  // byte[] | None
+            var patternWithoutDelimiter = "patternWithoutDelimiter_example";  // string | None
+            var _byte = System.Text.Encoding.ASCII.GetBytes("BYTE_ARRAY_DATA_HERE");  // byte[] | None
             var integer = 56;  // int? | None (optional) 
             var int32 = 56;  // int? | None (optional) 
-            var int64 = 789;  // long? | None (optional) 
+            var int64 = 789L;  // long? | None (optional) 
             var _float = 3.4F;  // float? | None (optional) 
-            var _string = _string_example;  // string | None (optional) 
-            var binary = BINARY_DATA_HERE;  // System.IO.Stream | None (optional) 
-            var date = 2013-10-20;  // DateTime? | None (optional) 
-            var dateTime = 2013-10-20T19:20:30+01:00;  // DateTime? | None (optional) 
-            var password = password_example;  // string | None (optional) 
-            var callback = callback_example;  // string | None (optional) 
+            var _string = "_string_example";  // string | None (optional) 
+            var binary = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | None (optional) 
+            var date = DateTime.Parse("2013-10-20");  // DateTime? | None (optional) 
+            var dateTime = DateTime.Parse("2013-10-20T19:20:30+01:00");  // DateTime? | None (optional) 
+            var password = "password_example";  // string | None (optional) 
+            var callback = "callback_example";  // string | None (optional) 
 
             try
             {
@@ -977,13 +977,13 @@ namespace Example
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(Configuration.Default);
             var enumHeaderStringArray = new List<string>(); // List<string> | Header parameter enum test (string array) (optional) 
-            var enumHeaderString = enumHeaderString_example;  // string | Header parameter enum test (string) (optional)  (default to -efg)
+            var enumHeaderString = "_abc";  // string | Header parameter enum test (string) (optional)  (default to -efg)
             var enumQueryStringArray = new List<string>(); // List<string> | Query parameter enum test (string array) (optional) 
-            var enumQueryString = enumQueryString_example;  // string | Query parameter enum test (string) (optional)  (default to -efg)
-            var enumQueryInteger = 56;  // int? | Query parameter enum test (double) (optional) 
-            var enumQueryDouble = 1.2D;  // double? | Query parameter enum test (double) (optional) 
+            var enumQueryString = "_abc";  // string | Query parameter enum test (string) (optional)  (default to -efg)
+            var enumQueryInteger = 1;  // int? | Query parameter enum test (double) (optional) 
+            var enumQueryDouble = 1.1D;  // double? | Query parameter enum test (double) (optional) 
             var enumFormStringArray = new List<string>(); // List<string> | Form parameter enum test (string array) (optional)  (default to $)
-            var enumFormString = enumFormString_example;  // string | Form parameter enum test (string) (optional)  (default to -efg)
+            var enumFormString = "_abc";  // string | Form parameter enum test (string) (optional)  (default to -efg)
 
             try
             {
@@ -1071,10 +1071,10 @@ namespace Example
             var apiInstance = new FakeApi(Configuration.Default);
             var requiredStringGroup = 56;  // int | Required String in group parameters
             var requiredBooleanGroup = true;  // bool | Required Boolean in group parameters
-            var requiredInt64Group = 789;  // long | Required Integer in group parameters
+            var requiredInt64Group = 789L;  // long | Required Integer in group parameters
             var stringGroup = 56;  // int? | String in group parameters (optional) 
             var booleanGroup = true;  // bool? | Boolean in group parameters (optional) 
-            var int64Group = 789;  // long? | Integer in group parameters (optional) 
+            var int64Group = 789L;  // long? | Integer in group parameters (optional) 
 
             try
             {
@@ -1225,8 +1225,8 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new FakeApi(Configuration.Default);
-            var param = param_example;  // string | field1
-            var param2 = param2_example;  // string | field2
+            var param = "param_example";  // string | field1
+            var param2 = "param2_example";  // string | field2
 
             try
             {
@@ -1307,7 +1307,7 @@ namespace Example
             var http = new List<string>(); // List<string> | 
             var url = new List<string>(); // List<string> | 
             var context = new List<string>(); // List<string> | 
-            var allowEmpty = allowEmpty_example;  // string | 
+            var allowEmpty = "allowEmpty_example";  // string | 
             var language = new Dictionary<string, string>(); // Dictionary<string, string> |  (optional) 
 
             try
diff --git a/samples/client/petstore/csharp/OpenAPIClient/docs/PetApi.md b/samples/client/petstore/csharp/OpenAPIClient/docs/PetApi.md
index 8675820ce21..b02d582adc1 100644
--- a/samples/client/petstore/csharp/OpenAPIClient/docs/PetApi.md
+++ b/samples/client/petstore/csharp/OpenAPIClient/docs/PetApi.md
@@ -119,8 +119,8 @@ namespace Example
             Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(Configuration.Default);
-            var petId = 789;  // long | Pet id to delete
-            var apiKey = apiKey_example;  // string |  (optional) 
+            var petId = 789L;  // long | Pet id to delete
+            var apiKey = "apiKey_example";  // string |  (optional) 
 
             try
             {
@@ -362,7 +362,7 @@ namespace Example
             // Configuration.Default.AddApiKeyPrefix("api_key", "Bearer");
 
             var apiInstance = new PetApi(Configuration.Default);
-            var petId = 789;  // long | ID of pet to return
+            var petId = 789L;  // long | ID of pet to return
 
             try
             {
@@ -520,9 +520,9 @@ namespace Example
             Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(Configuration.Default);
-            var petId = 789;  // long | ID of pet that needs to be updated
-            var name = name_example;  // string | Updated name of the pet (optional) 
-            var status = status_example;  // string | Updated status of the pet (optional) 
+            var petId = 789L;  // long | ID of pet that needs to be updated
+            var name = "name_example";  // string | Updated name of the pet (optional) 
+            var status = "status_example";  // string | Updated status of the pet (optional) 
 
             try
             {
@@ -601,9 +601,9 @@ namespace Example
             Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(Configuration.Default);
-            var petId = 789;  // long | ID of pet to update
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
-            var file = BINARY_DATA_HERE;  // System.IO.Stream | file to upload (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
+            var file = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload (optional) 
 
             try
             {
@@ -682,9 +682,9 @@ namespace Example
             Configuration.Default.AccessToken = "YOUR_ACCESS_TOKEN";
 
             var apiInstance = new PetApi(Configuration.Default);
-            var petId = 789;  // long | ID of pet to update
-            var requiredFile = BINARY_DATA_HERE;  // System.IO.Stream | file to upload
-            var additionalMetadata = additionalMetadata_example;  // string | Additional data to pass to server (optional) 
+            var petId = 789L;  // long | ID of pet to update
+            var requiredFile = new System.IO.MemoryStream(System.IO.File.ReadAllBytes("/path/to/file.txt"));  // System.IO.Stream | file to upload
+            var additionalMetadata = "additionalMetadata_example";  // string | Additional data to pass to server (optional) 
 
             try
             {
diff --git a/samples/client/petstore/csharp/OpenAPIClient/docs/StoreApi.md b/samples/client/petstore/csharp/OpenAPIClient/docs/StoreApi.md
index eac4f3fcafc..3a452bc4d69 100644
--- a/samples/client/petstore/csharp/OpenAPIClient/docs/StoreApi.md
+++ b/samples/client/petstore/csharp/OpenAPIClient/docs/StoreApi.md
@@ -36,7 +36,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(Configuration.Default);
-            var orderId = orderId_example;  // string | ID of the order that needs to be deleted
+            var orderId = "orderId_example";  // string | ID of the order that needs to be deleted
 
             try
             {
@@ -189,7 +189,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new StoreApi(Configuration.Default);
-            var orderId = 789;  // long | ID of pet that needs to be fetched
+            var orderId = 789L;  // long | ID of pet that needs to be fetched
 
             try
             {
diff --git a/samples/client/petstore/csharp/OpenAPIClient/docs/UserApi.md b/samples/client/petstore/csharp/OpenAPIClient/docs/UserApi.md
index 611bd412da5..5bd0898eac1 100644
--- a/samples/client/petstore/csharp/OpenAPIClient/docs/UserApi.md
+++ b/samples/client/petstore/csharp/OpenAPIClient/docs/UserApi.md
@@ -261,7 +261,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(Configuration.Default);
-            var username = username_example;  // string | The name that needs to be deleted
+            var username = "username_example";  // string | The name that needs to be deleted
 
             try
             {
@@ -335,7 +335,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(Configuration.Default);
-            var username = username_example;  // string | The name that needs to be fetched. Use user1 for testing.
+            var username = "username_example";  // string | The name that needs to be fetched. Use user1 for testing.
 
             try
             {
@@ -411,8 +411,8 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(Configuration.Default);
-            var username = username_example;  // string | The user name for login
-            var password = password_example;  // string | The password for login in clear text
+            var username = "username_example";  // string | The user name for login
+            var password = "password_example";  // string | The password for login in clear text
 
             try
             {
@@ -559,7 +559,7 @@ namespace Example
         {
             Configuration.Default.BasePath = "http://petstore.swagger.io:80/v2";
             var apiInstance = new UserApi(Configuration.Default);
-            var username = username_example;  // string | name that need to be deleted
+            var username = "username_example";  // string | name that need to be deleted
             var user = new User(); // User | Updated user object
 
             try
diff --git a/samples/client/petstore/go/auth_test.go b/samples/client/petstore/go/auth_test.go
index c35e5b24fbc..94ba6a1526e 100644
--- a/samples/client/petstore/go/auth_test.go
+++ b/samples/client/petstore/go/auth_test.go
@@ -10,7 +10,7 @@ import (
 
 	"golang.org/x/oauth2"
 
-	sw "./go-petstore"
+	sw "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore"
 )
 
 func TestOAuth2(t *testing.T) {
@@ -39,7 +39,7 @@ func TestOAuth2(t *testing.T) {
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Body(newPet).Execute()
 
@@ -74,7 +74,7 @@ func TestBasicAuth(t *testing.T) {
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(auth).Body(newPet).Execute()
 
@@ -104,7 +104,7 @@ func TestAccessToken(t *testing.T) {
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(nil).Body(newPet).Execute()
 
@@ -130,11 +130,11 @@ func TestAccessToken(t *testing.T) {
 }
 
 func TestAPIKeyNoPrefix(t *testing.T) {
-	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": sw.APIKey{Key: "TEST123"}})
+	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": {Key: "TEST123"}})
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Body(newPet).Execute()
 
@@ -165,11 +165,11 @@ func TestAPIKeyNoPrefix(t *testing.T) {
 }
 
 func TestAPIKeyWithPrefix(t *testing.T) {
-	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": sw.APIKey{Key: "TEST123", Prefix: "Bearer"}})
+	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": {Key: "TEST123", Prefix: "Bearer"}})
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(nil).Body(newPet).Execute()
 
@@ -202,7 +202,7 @@ func TestAPIKeyWithPrefix(t *testing.T) {
 func TestDefaultHeader(t *testing.T) {
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Body(newPet).Execute()
 
diff --git a/samples/client/petstore/go/fake_api_test.go b/samples/client/petstore/go/fake_api_test.go
index d27137eeacf..9e163fa565f 100644
--- a/samples/client/petstore/go/fake_api_test.go
+++ b/samples/client/petstore/go/fake_api_test.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"testing"
 
-	sw "./go-petstore"
+	sw "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore"
 )
 
 // TestPutBodyWithFileSchema ensures a model with the name 'File'
@@ -15,7 +15,7 @@ func TestPutBodyWithFileSchema(t *testing.T) {
 
 	schema := sw.FileSchemaTestClass{
 		File:  &sw.File{SourceURI: sw.PtrString("https://example.com/image.png")},
-		Files: &[]sw.File{{SourceURI: sw.PtrString("https://example.com/image.png")}}}
+		Files: []sw.File{{SourceURI: sw.PtrString("https://example.com/image.png")}}}
 
 	r, err := client.FakeApi.TestBodyWithFileSchema(context.Background()).Body(schema).Execute()
 
diff --git a/samples/client/petstore/go/go-petstore/README.md b/samples/client/petstore/go/go-petstore/README.md
index d462bd1be83..70d0040a3a6 100644
--- a/samples/client/petstore/go/go-petstore/README.md
+++ b/samples/client/petstore/go/go-petstore/README.md
@@ -22,7 +22,7 @@ go get golang.org/x/net/context
 Put the package under your project folder and add the following in import:
 
 ```golang
-import sw "./petstore"
+import petstore "github.com/GIT_USER_ID/GIT_REPO_ID"
 ```
 
 To use a proxy, set the environment variable `HTTP_PROXY`:
@@ -40,7 +40,7 @@ Default configuration comes with `Servers` field that contains server objects as
 For using other server than the one defined on index 0 set context value `sw.ContextServerIndex` of type `int`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
+ctx := context.WithValue(context.Background(), petstore.ContextServerIndex, 1)
 ```
 
 ### Templated Server URL
@@ -48,7 +48,7 @@ ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
 Templated server URL is formatted using default variables from configuration or from context value `sw.ContextServerVariables` of type `map[string]string`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerVariables, map[string]string{
+ctx := context.WithValue(context.Background(), petstore.ContextServerVariables, map[string]string{
 	"basePath": "v2",
 })
 ```
@@ -62,10 +62,10 @@ An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
 Similar rules for overriding default operation server index and variables applies by using `sw.ContextOperationServerIndices` and `sw.ContextOperationServerVariables` context maps.
 
 ```
-ctx := context.WithValue(context.Background(), sw.ContextOperationServerIndices, map[string]int{
+ctx := context.WithValue(context.Background(), petstore.ContextOperationServerIndices, map[string]int{
 	"{classname}Service.{nickname}": 2,
 })
-ctx = context.WithValue(context.Background(), sw.ContextOperationServerVariables, map[string]map[string]string{
+ctx = context.WithValue(context.Background(), petstore.ContextOperationServerVariables, map[string]map[string]string{
 	"{classname}Service.{nickname}": {
 		"port": "8443",
 	},
diff --git a/samples/client/petstore/go/go-petstore/api_another_fake.go b/samples/client/petstore/go/go-petstore/api_another_fake.go
index bb5add0ca9f..8199c4fd370 100644
--- a/samples/client/petstore/go/go-petstore/api_another_fake.go
+++ b/samples/client/petstore/go/go-petstore/api_another_fake.go
@@ -12,15 +12,15 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type AnotherFakeApi interface {
@@ -30,21 +30,21 @@ type AnotherFakeApi interface {
 
 	To test special tags and operation ID starting with number
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCall123TestSpecialTagsRequest
 	*/
-	Call123TestSpecialTags(ctx _context.Context) ApiCall123TestSpecialTagsRequest
+	Call123TestSpecialTags(ctx context.Context) ApiCall123TestSpecialTagsRequest
 
 	// Call123TestSpecialTagsExecute executes the request
 	//  @return Client
-	Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (Client, *_nethttp.Response, error)
+	Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (*Client, *http.Response, error)
 }
 
 // AnotherFakeApiService AnotherFakeApi service
 type AnotherFakeApiService service
 
 type ApiCall123TestSpecialTagsRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService AnotherFakeApi
 	body *Client
 }
@@ -55,7 +55,7 @@ func (r ApiCall123TestSpecialTagsRequest) Body(body Client) ApiCall123TestSpecia
 	return r
 }
 
-func (r ApiCall123TestSpecialTagsRequest) Execute() (Client, *_nethttp.Response, error) {
+func (r ApiCall123TestSpecialTagsRequest) Execute() (*Client, *http.Response, error) {
 	return r.ApiService.Call123TestSpecialTagsExecute(r)
 }
 
@@ -64,10 +64,10 @@ Call123TestSpecialTags To test special tags
 
 To test special tags and operation ID starting with number
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCall123TestSpecialTagsRequest
 */
-func (a *AnotherFakeApiService) Call123TestSpecialTags(ctx _context.Context) ApiCall123TestSpecialTagsRequest {
+func (a *AnotherFakeApiService) Call123TestSpecialTags(ctx context.Context) ApiCall123TestSpecialTagsRequest {
 	return ApiCall123TestSpecialTagsRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -76,24 +76,24 @@ func (a *AnotherFakeApiService) Call123TestSpecialTags(ctx _context.Context) Api
 
 // Execute executes the request
 //  @return Client
-func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (Client, *_nethttp.Response, error) {
+func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (*Client, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPatch
+		localVarHTTPMethod   = http.MethodPatch
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Client
+		localVarReturnValue  *Client
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "AnotherFakeApiService.Call123TestSpecialTags")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/another-fake/dummy"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return localVarReturnValue, nil, reportError("body is required and must be specified")
 	}
@@ -127,15 +127,15 @@ func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSp
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -144,7 +144,7 @@ func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSp
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/client/petstore/go/go-petstore/api_fake.go b/samples/client/petstore/go/go-petstore/api_fake.go
index 40252ad41b5..96a2c5ba9f7 100644
--- a/samples/client/petstore/go/go-petstore/api_fake.go
+++ b/samples/client/petstore/go/go-petstore/api_fake.go
@@ -12,10 +12,10 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"os"
 	"time"
 	"reflect"
@@ -23,7 +23,7 @@ import (
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type FakeApi interface {
@@ -33,107 +33,107 @@ type FakeApi interface {
 
 	this route creates an XmlItem
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateXmlItemRequest
 	*/
-	CreateXmlItem(ctx _context.Context) ApiCreateXmlItemRequest
+	CreateXmlItem(ctx context.Context) ApiCreateXmlItemRequest
 
 	// CreateXmlItemExecute executes the request
-	CreateXmlItemExecute(r ApiCreateXmlItemRequest) (*_nethttp.Response, error)
+	CreateXmlItemExecute(r ApiCreateXmlItemRequest) (*http.Response, error)
 
 	/*
 	FakeOuterBooleanSerialize Method for FakeOuterBooleanSerialize
 
 	Test serialization of outer boolean types
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterBooleanSerializeRequest
 	*/
-	FakeOuterBooleanSerialize(ctx _context.Context) ApiFakeOuterBooleanSerializeRequest
+	FakeOuterBooleanSerialize(ctx context.Context) ApiFakeOuterBooleanSerializeRequest
 
 	// FakeOuterBooleanSerializeExecute executes the request
 	//  @return bool
-	FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *_nethttp.Response, error)
+	FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *http.Response, error)
 
 	/*
 	FakeOuterCompositeSerialize Method for FakeOuterCompositeSerialize
 
 	Test serialization of object with outer number type
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterCompositeSerializeRequest
 	*/
-	FakeOuterCompositeSerialize(ctx _context.Context) ApiFakeOuterCompositeSerializeRequest
+	FakeOuterCompositeSerialize(ctx context.Context) ApiFakeOuterCompositeSerializeRequest
 
 	// FakeOuterCompositeSerializeExecute executes the request
 	//  @return OuterComposite
-	FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (OuterComposite, *_nethttp.Response, error)
+	FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (*OuterComposite, *http.Response, error)
 
 	/*
 	FakeOuterNumberSerialize Method for FakeOuterNumberSerialize
 
 	Test serialization of outer number types
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterNumberSerializeRequest
 	*/
-	FakeOuterNumberSerialize(ctx _context.Context) ApiFakeOuterNumberSerializeRequest
+	FakeOuterNumberSerialize(ctx context.Context) ApiFakeOuterNumberSerializeRequest
 
 	// FakeOuterNumberSerializeExecute executes the request
 	//  @return float32
-	FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *_nethttp.Response, error)
+	FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *http.Response, error)
 
 	/*
 	FakeOuterStringSerialize Method for FakeOuterStringSerialize
 
 	Test serialization of outer string types
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterStringSerializeRequest
 	*/
-	FakeOuterStringSerialize(ctx _context.Context) ApiFakeOuterStringSerializeRequest
+	FakeOuterStringSerialize(ctx context.Context) ApiFakeOuterStringSerializeRequest
 
 	// FakeOuterStringSerializeExecute executes the request
 	//  @return string
-	FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *_nethttp.Response, error)
+	FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *http.Response, error)
 
 	/*
 	TestBodyWithFileSchema Method for TestBodyWithFileSchema
 
 	For this test, the body for this request much reference a schema named `File`.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestBodyWithFileSchemaRequest
 	*/
-	TestBodyWithFileSchema(ctx _context.Context) ApiTestBodyWithFileSchemaRequest
+	TestBodyWithFileSchema(ctx context.Context) ApiTestBodyWithFileSchemaRequest
 
 	// TestBodyWithFileSchemaExecute executes the request
-	TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*_nethttp.Response, error)
+	TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*http.Response, error)
 
 	/*
 	TestBodyWithQueryParams Method for TestBodyWithQueryParams
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestBodyWithQueryParamsRequest
 	*/
-	TestBodyWithQueryParams(ctx _context.Context) ApiTestBodyWithQueryParamsRequest
+	TestBodyWithQueryParams(ctx context.Context) ApiTestBodyWithQueryParamsRequest
 
 	// TestBodyWithQueryParamsExecute executes the request
-	TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*_nethttp.Response, error)
+	TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*http.Response, error)
 
 	/*
 	TestClientModel To test \"client\" model
 
 	To test "client" model
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestClientModelRequest
 	*/
-	TestClientModel(ctx _context.Context) ApiTestClientModelRequest
+	TestClientModel(ctx context.Context) ApiTestClientModelRequest
 
 	// TestClientModelExecute executes the request
 	//  @return Client
-	TestClientModelExecute(r ApiTestClientModelRequest) (Client, *_nethttp.Response, error)
+	TestClientModelExecute(r ApiTestClientModelRequest) (*Client, *http.Response, error)
 
 	/*
 	TestEndpointParameters Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트
@@ -143,81 +143,81 @@ type FakeApi interface {
  偽のエンドポイント
  가짜 엔드 포인트
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestEndpointParametersRequest
 	*/
-	TestEndpointParameters(ctx _context.Context) ApiTestEndpointParametersRequest
+	TestEndpointParameters(ctx context.Context) ApiTestEndpointParametersRequest
 
 	// TestEndpointParametersExecute executes the request
-	TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*_nethttp.Response, error)
+	TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*http.Response, error)
 
 	/*
 	TestEnumParameters To test enum parameters
 
 	To test enum parameters
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestEnumParametersRequest
 	*/
-	TestEnumParameters(ctx _context.Context) ApiTestEnumParametersRequest
+	TestEnumParameters(ctx context.Context) ApiTestEnumParametersRequest
 
 	// TestEnumParametersExecute executes the request
-	TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*_nethttp.Response, error)
+	TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*http.Response, error)
 
 	/*
 	TestGroupParameters Fake endpoint to test group parameters (optional)
 
 	Fake endpoint to test group parameters (optional)
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestGroupParametersRequest
 	*/
-	TestGroupParameters(ctx _context.Context) ApiTestGroupParametersRequest
+	TestGroupParameters(ctx context.Context) ApiTestGroupParametersRequest
 
 	// TestGroupParametersExecute executes the request
-	TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*_nethttp.Response, error)
+	TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*http.Response, error)
 
 	/*
 	TestInlineAdditionalProperties test inline additionalProperties
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestInlineAdditionalPropertiesRequest
 	*/
-	TestInlineAdditionalProperties(ctx _context.Context) ApiTestInlineAdditionalPropertiesRequest
+	TestInlineAdditionalProperties(ctx context.Context) ApiTestInlineAdditionalPropertiesRequest
 
 	// TestInlineAdditionalPropertiesExecute executes the request
-	TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*_nethttp.Response, error)
+	TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*http.Response, error)
 
 	/*
 	TestJsonFormData test json serialization of form data
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestJsonFormDataRequest
 	*/
-	TestJsonFormData(ctx _context.Context) ApiTestJsonFormDataRequest
+	TestJsonFormData(ctx context.Context) ApiTestJsonFormDataRequest
 
 	// TestJsonFormDataExecute executes the request
-	TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*_nethttp.Response, error)
+	TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*http.Response, error)
 
 	/*
 	TestQueryParameterCollectionFormat Method for TestQueryParameterCollectionFormat
 
 	To test the collection format in query parameters
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestQueryParameterCollectionFormatRequest
 	*/
-	TestQueryParameterCollectionFormat(ctx _context.Context) ApiTestQueryParameterCollectionFormatRequest
+	TestQueryParameterCollectionFormat(ctx context.Context) ApiTestQueryParameterCollectionFormatRequest
 
 	// TestQueryParameterCollectionFormatExecute executes the request
-	TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*_nethttp.Response, error)
+	TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*http.Response, error)
 }
 
 // FakeApiService FakeApi service
 type FakeApiService service
 
 type ApiCreateXmlItemRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	xmlItem *XmlItem
 }
@@ -228,7 +228,7 @@ func (r ApiCreateXmlItemRequest) XmlItem(xmlItem XmlItem) ApiCreateXmlItemReques
 	return r
 }
 
-func (r ApiCreateXmlItemRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateXmlItemRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateXmlItemExecute(r)
 }
 
@@ -237,10 +237,10 @@ CreateXmlItem creates an XmlItem
 
 this route creates an XmlItem
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateXmlItemRequest
 */
-func (a *FakeApiService) CreateXmlItem(ctx _context.Context) ApiCreateXmlItemRequest {
+func (a *FakeApiService) CreateXmlItem(ctx context.Context) ApiCreateXmlItemRequest {
 	return ApiCreateXmlItemRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -248,23 +248,23 @@ func (a *FakeApiService) CreateXmlItem(ctx _context.Context) ApiCreateXmlItemReq
 }
 
 // Execute executes the request
-func (a *FakeApiService) CreateXmlItemExecute(r ApiCreateXmlItemRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) CreateXmlItemExecute(r ApiCreateXmlItemRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.CreateXmlItem")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/create_xml_item"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.xmlItem == nil {
 		return nil, reportError("xmlItem is required and must be specified")
 	}
@@ -298,15 +298,15 @@ func (a *FakeApiService) CreateXmlItemExecute(r ApiCreateXmlItemRequest) (*_neth
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -317,7 +317,7 @@ func (a *FakeApiService) CreateXmlItemExecute(r ApiCreateXmlItemRequest) (*_neth
 }
 
 type ApiFakeOuterBooleanSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *bool
 }
@@ -328,7 +328,7 @@ func (r ApiFakeOuterBooleanSerializeRequest) Body(body bool) ApiFakeOuterBoolean
 	return r
 }
 
-func (r ApiFakeOuterBooleanSerializeRequest) Execute() (bool, *_nethttp.Response, error) {
+func (r ApiFakeOuterBooleanSerializeRequest) Execute() (bool, *http.Response, error) {
 	return r.ApiService.FakeOuterBooleanSerializeExecute(r)
 }
 
@@ -337,10 +337,10 @@ FakeOuterBooleanSerialize Method for FakeOuterBooleanSerialize
 
 Test serialization of outer boolean types
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterBooleanSerializeRequest
 */
-func (a *FakeApiService) FakeOuterBooleanSerialize(ctx _context.Context) ApiFakeOuterBooleanSerializeRequest {
+func (a *FakeApiService) FakeOuterBooleanSerialize(ctx context.Context) ApiFakeOuterBooleanSerializeRequest {
 	return ApiFakeOuterBooleanSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -349,9 +349,9 @@ func (a *FakeApiService) FakeOuterBooleanSerialize(ctx _context.Context) ApiFake
 
 // Execute executes the request
 //  @return bool
-func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  bool
@@ -359,14 +359,14 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterBooleanSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/boolean"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -397,15 +397,15 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -414,7 +414,7 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -425,7 +425,7 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 }
 
 type ApiFakeOuterCompositeSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *OuterComposite
 }
@@ -436,7 +436,7 @@ func (r ApiFakeOuterCompositeSerializeRequest) Body(body OuterComposite) ApiFake
 	return r
 }
 
-func (r ApiFakeOuterCompositeSerializeRequest) Execute() (OuterComposite, *_nethttp.Response, error) {
+func (r ApiFakeOuterCompositeSerializeRequest) Execute() (*OuterComposite, *http.Response, error) {
 	return r.ApiService.FakeOuterCompositeSerializeExecute(r)
 }
 
@@ -445,10 +445,10 @@ FakeOuterCompositeSerialize Method for FakeOuterCompositeSerialize
 
 Test serialization of object with outer number type
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterCompositeSerializeRequest
 */
-func (a *FakeApiService) FakeOuterCompositeSerialize(ctx _context.Context) ApiFakeOuterCompositeSerializeRequest {
+func (a *FakeApiService) FakeOuterCompositeSerialize(ctx context.Context) ApiFakeOuterCompositeSerializeRequest {
 	return ApiFakeOuterCompositeSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -457,24 +457,24 @@ func (a *FakeApiService) FakeOuterCompositeSerialize(ctx _context.Context) ApiFa
 
 // Execute executes the request
 //  @return OuterComposite
-func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (OuterComposite, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (*OuterComposite, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  OuterComposite
+		localVarReturnValue  *OuterComposite
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterCompositeSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/composite"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -505,15 +505,15 @@ func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompos
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -522,7 +522,7 @@ func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompos
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -533,7 +533,7 @@ func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompos
 }
 
 type ApiFakeOuterNumberSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *float32
 }
@@ -544,7 +544,7 @@ func (r ApiFakeOuterNumberSerializeRequest) Body(body float32) ApiFakeOuterNumbe
 	return r
 }
 
-func (r ApiFakeOuterNumberSerializeRequest) Execute() (float32, *_nethttp.Response, error) {
+func (r ApiFakeOuterNumberSerializeRequest) Execute() (float32, *http.Response, error) {
 	return r.ApiService.FakeOuterNumberSerializeExecute(r)
 }
 
@@ -553,10 +553,10 @@ FakeOuterNumberSerialize Method for FakeOuterNumberSerialize
 
 Test serialization of outer number types
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterNumberSerializeRequest
 */
-func (a *FakeApiService) FakeOuterNumberSerialize(ctx _context.Context) ApiFakeOuterNumberSerializeRequest {
+func (a *FakeApiService) FakeOuterNumberSerialize(ctx context.Context) ApiFakeOuterNumberSerializeRequest {
 	return ApiFakeOuterNumberSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -565,9 +565,9 @@ func (a *FakeApiService) FakeOuterNumberSerialize(ctx _context.Context) ApiFakeO
 
 // Execute executes the request
 //  @return float32
-func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  float32
@@ -575,14 +575,14 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterNumberSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/number"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -613,15 +613,15 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -630,7 +630,7 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -641,7 +641,7 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 }
 
 type ApiFakeOuterStringSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *string
 }
@@ -652,7 +652,7 @@ func (r ApiFakeOuterStringSerializeRequest) Body(body string) ApiFakeOuterString
 	return r
 }
 
-func (r ApiFakeOuterStringSerializeRequest) Execute() (string, *_nethttp.Response, error) {
+func (r ApiFakeOuterStringSerializeRequest) Execute() (string, *http.Response, error) {
 	return r.ApiService.FakeOuterStringSerializeExecute(r)
 }
 
@@ -661,10 +661,10 @@ FakeOuterStringSerialize Method for FakeOuterStringSerialize
 
 Test serialization of outer string types
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterStringSerializeRequest
 */
-func (a *FakeApiService) FakeOuterStringSerialize(ctx _context.Context) ApiFakeOuterStringSerializeRequest {
+func (a *FakeApiService) FakeOuterStringSerialize(ctx context.Context) ApiFakeOuterStringSerializeRequest {
 	return ApiFakeOuterStringSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -673,9 +673,9 @@ func (a *FakeApiService) FakeOuterStringSerialize(ctx _context.Context) ApiFakeO
 
 // Execute executes the request
 //  @return string
-func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  string
@@ -683,14 +683,14 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterStringSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/string"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -721,15 +721,15 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -738,7 +738,7 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -749,7 +749,7 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 }
 
 type ApiTestBodyWithFileSchemaRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *FileSchemaTestClass
 }
@@ -759,7 +759,7 @@ func (r ApiTestBodyWithFileSchemaRequest) Body(body FileSchemaTestClass) ApiTest
 	return r
 }
 
-func (r ApiTestBodyWithFileSchemaRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestBodyWithFileSchemaRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestBodyWithFileSchemaExecute(r)
 }
 
@@ -768,10 +768,10 @@ TestBodyWithFileSchema Method for TestBodyWithFileSchema
 
 For this test, the body for this request much reference a schema named `File`.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestBodyWithFileSchemaRequest
 */
-func (a *FakeApiService) TestBodyWithFileSchema(ctx _context.Context) ApiTestBodyWithFileSchemaRequest {
+func (a *FakeApiService) TestBodyWithFileSchema(ctx context.Context) ApiTestBodyWithFileSchemaRequest {
 	return ApiTestBodyWithFileSchemaRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -779,23 +779,23 @@ func (a *FakeApiService) TestBodyWithFileSchema(ctx _context.Context) ApiTestBod
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestBodyWithFileSchema")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/body-with-file-schema"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -829,15 +829,15 @@ func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSche
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -848,7 +848,7 @@ func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSche
 }
 
 type ApiTestBodyWithQueryParamsRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	query *string
 	body *User
@@ -863,17 +863,17 @@ func (r ApiTestBodyWithQueryParamsRequest) Body(body User) ApiTestBodyWithQueryP
 	return r
 }
 
-func (r ApiTestBodyWithQueryParamsRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestBodyWithQueryParamsRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestBodyWithQueryParamsExecute(r)
 }
 
 /*
 TestBodyWithQueryParams Method for TestBodyWithQueryParams
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestBodyWithQueryParamsRequest
 */
-func (a *FakeApiService) TestBodyWithQueryParams(ctx _context.Context) ApiTestBodyWithQueryParamsRequest {
+func (a *FakeApiService) TestBodyWithQueryParams(ctx context.Context) ApiTestBodyWithQueryParamsRequest {
 	return ApiTestBodyWithQueryParamsRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -881,23 +881,23 @@ func (a *FakeApiService) TestBodyWithQueryParams(ctx _context.Context) ApiTestBo
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestBodyWithQueryParams")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/body-with-query-params"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.query == nil {
 		return nil, reportError("query is required and must be specified")
 	}
@@ -935,15 +935,15 @@ func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryPa
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -954,7 +954,7 @@ func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryPa
 }
 
 type ApiTestClientModelRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *Client
 }
@@ -965,7 +965,7 @@ func (r ApiTestClientModelRequest) Body(body Client) ApiTestClientModelRequest {
 	return r
 }
 
-func (r ApiTestClientModelRequest) Execute() (Client, *_nethttp.Response, error) {
+func (r ApiTestClientModelRequest) Execute() (*Client, *http.Response, error) {
 	return r.ApiService.TestClientModelExecute(r)
 }
 
@@ -974,10 +974,10 @@ TestClientModel To test \"client\" model
 
 To test "client" model
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestClientModelRequest
 */
-func (a *FakeApiService) TestClientModel(ctx _context.Context) ApiTestClientModelRequest {
+func (a *FakeApiService) TestClientModel(ctx context.Context) ApiTestClientModelRequest {
 	return ApiTestClientModelRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -986,24 +986,24 @@ func (a *FakeApiService) TestClientModel(ctx _context.Context) ApiTestClientMode
 
 // Execute executes the request
 //  @return Client
-func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Client, *_nethttp.Response, error) {
+func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (*Client, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPatch
+		localVarHTTPMethod   = http.MethodPatch
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Client
+		localVarReturnValue  *Client
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestClientModel")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return localVarReturnValue, nil, reportError("body is required and must be specified")
 	}
@@ -1037,15 +1037,15 @@ func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Cl
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1054,7 +1054,7 @@ func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Cl
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -1065,7 +1065,7 @@ func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Cl
 }
 
 type ApiTestEndpointParametersRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	number *float32
 	double *float64
@@ -1154,7 +1154,7 @@ func (r ApiTestEndpointParametersRequest) Callback(callback string) ApiTestEndpo
 	return r
 }
 
-func (r ApiTestEndpointParametersRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestEndpointParametersRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestEndpointParametersExecute(r)
 }
 
@@ -1166,10 +1166,10 @@ Fake endpoint for testing various parameters
  偽のエンドポイント
  가짜 엔드 포인트
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestEndpointParametersRequest
 */
-func (a *FakeApiService) TestEndpointParameters(ctx _context.Context) ApiTestEndpointParametersRequest {
+func (a *FakeApiService) TestEndpointParameters(ctx context.Context) ApiTestEndpointParametersRequest {
 	return ApiTestEndpointParametersRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1177,23 +1177,23 @@ func (a *FakeApiService) TestEndpointParameters(ctx _context.Context) ApiTestEnd
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestEndpointParameters")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.number == nil {
 		return nil, reportError("number is required and must be specified")
 	}
@@ -1266,7 +1266,7 @@ func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParamete
 		binaryLocalVarFile = *r.binary
 	}
 	if binaryLocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll(binaryLocalVarFile)
+		fbs, _ := ioutil.ReadAll(binaryLocalVarFile)
 		binaryLocalVarFileBytes = fbs
 		binaryLocalVarFileName = binaryLocalVarFile.Name()
 		binaryLocalVarFile.Close()
@@ -1294,15 +1294,15 @@ func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParamete
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1313,7 +1313,7 @@ func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParamete
 }
 
 type ApiTestEnumParametersRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	enumHeaderStringArray *[]string
 	enumHeaderString *string
@@ -1366,7 +1366,7 @@ func (r ApiTestEnumParametersRequest) EnumFormString(enumFormString string) ApiT
 	return r
 }
 
-func (r ApiTestEnumParametersRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestEnumParametersRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestEnumParametersExecute(r)
 }
 
@@ -1375,10 +1375,10 @@ TestEnumParameters To test enum parameters
 
 To test enum parameters
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestEnumParametersRequest
 */
-func (a *FakeApiService) TestEnumParameters(ctx _context.Context) ApiTestEnumParametersRequest {
+func (a *FakeApiService) TestEnumParameters(ctx context.Context) ApiTestEnumParametersRequest {
 	return ApiTestEnumParametersRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1386,23 +1386,23 @@ func (a *FakeApiService) TestEnumParameters(ctx _context.Context) ApiTestEnumPar
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestEnumParameters")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	if r.enumQueryStringArray != nil {
 		localVarQueryParams.Add("enum_query_string_array", parameterToString(*r.enumQueryStringArray, "csv"))
@@ -1455,15 +1455,15 @@ func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersReques
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1474,7 +1474,7 @@ func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersReques
 }
 
 type ApiTestGroupParametersRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	requiredStringGroup *int32
 	requiredBooleanGroup *bool
@@ -1515,7 +1515,7 @@ func (r ApiTestGroupParametersRequest) Int64Group(int64Group int64) ApiTestGroup
 	return r
 }
 
-func (r ApiTestGroupParametersRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestGroupParametersRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestGroupParametersExecute(r)
 }
 
@@ -1524,10 +1524,10 @@ TestGroupParameters Fake endpoint to test group parameters (optional)
 
 Fake endpoint to test group parameters (optional)
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestGroupParametersRequest
 */
-func (a *FakeApiService) TestGroupParameters(ctx _context.Context) ApiTestGroupParametersRequest {
+func (a *FakeApiService) TestGroupParameters(ctx context.Context) ApiTestGroupParametersRequest {
 	return ApiTestGroupParametersRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1535,23 +1535,23 @@ func (a *FakeApiService) TestGroupParameters(ctx _context.Context) ApiTestGroupP
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestGroupParameters")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.requiredStringGroup == nil {
 		return nil, reportError("requiredStringGroup is required and must be specified")
 	}
@@ -1601,15 +1601,15 @@ func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequ
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1620,7 +1620,7 @@ func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequ
 }
 
 type ApiTestInlineAdditionalPropertiesRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	param *map[string]string
 }
@@ -1631,17 +1631,17 @@ func (r ApiTestInlineAdditionalPropertiesRequest) Param(param map[string]string)
 	return r
 }
 
-func (r ApiTestInlineAdditionalPropertiesRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestInlineAdditionalPropertiesRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestInlineAdditionalPropertiesExecute(r)
 }
 
 /*
 TestInlineAdditionalProperties test inline additionalProperties
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestInlineAdditionalPropertiesRequest
 */
-func (a *FakeApiService) TestInlineAdditionalProperties(ctx _context.Context) ApiTestInlineAdditionalPropertiesRequest {
+func (a *FakeApiService) TestInlineAdditionalProperties(ctx context.Context) ApiTestInlineAdditionalPropertiesRequest {
 	return ApiTestInlineAdditionalPropertiesRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1649,23 +1649,23 @@ func (a *FakeApiService) TestInlineAdditionalProperties(ctx _context.Context) Ap
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestInlineAdditionalProperties")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/inline-additionalProperties"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.param == nil {
 		return nil, reportError("param is required and must be specified")
 	}
@@ -1699,15 +1699,15 @@ func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAd
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1718,7 +1718,7 @@ func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAd
 }
 
 type ApiTestJsonFormDataRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	param *string
 	param2 *string
@@ -1735,17 +1735,17 @@ func (r ApiTestJsonFormDataRequest) Param2(param2 string) ApiTestJsonFormDataReq
 	return r
 }
 
-func (r ApiTestJsonFormDataRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestJsonFormDataRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestJsonFormDataExecute(r)
 }
 
 /*
 TestJsonFormData test json serialization of form data
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestJsonFormDataRequest
 */
-func (a *FakeApiService) TestJsonFormData(ctx _context.Context) ApiTestJsonFormDataRequest {
+func (a *FakeApiService) TestJsonFormData(ctx context.Context) ApiTestJsonFormDataRequest {
 	return ApiTestJsonFormDataRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1753,23 +1753,23 @@ func (a *FakeApiService) TestJsonFormData(ctx _context.Context) ApiTestJsonFormD
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestJsonFormData")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/jsonFormData"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.param == nil {
 		return nil, reportError("param is required and must be specified")
 	}
@@ -1806,15 +1806,15 @@ func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1825,7 +1825,7 @@ func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (
 }
 
 type ApiTestQueryParameterCollectionFormatRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	pipe *[]string
 	ioutil *[]string
@@ -1855,7 +1855,7 @@ func (r ApiTestQueryParameterCollectionFormatRequest) Context(context []string)
 	return r
 }
 
-func (r ApiTestQueryParameterCollectionFormatRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestQueryParameterCollectionFormatRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestQueryParameterCollectionFormatExecute(r)
 }
 
@@ -1864,10 +1864,10 @@ TestQueryParameterCollectionFormat Method for TestQueryParameterCollectionFormat
 
 To test the collection format in query parameters
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestQueryParameterCollectionFormatRequest
 */
-func (a *FakeApiService) TestQueryParameterCollectionFormat(ctx _context.Context) ApiTestQueryParameterCollectionFormatRequest {
+func (a *FakeApiService) TestQueryParameterCollectionFormat(ctx context.Context) ApiTestQueryParameterCollectionFormatRequest {
 	return ApiTestQueryParameterCollectionFormatRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1875,23 +1875,23 @@ func (a *FakeApiService) TestQueryParameterCollectionFormat(ctx _context.Context
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestQueryParameterCollectionFormat")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/test-query-parameters"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.pipe == nil {
 		return nil, reportError("pipe is required and must be specified")
 	}
@@ -1950,15 +1950,15 @@ func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQuer
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
diff --git a/samples/client/petstore/go/go-petstore/api_fake_classname_tags123.go b/samples/client/petstore/go/go-petstore/api_fake_classname_tags123.go
index 67f9f95661a..67b8e6a66c7 100644
--- a/samples/client/petstore/go/go-petstore/api_fake_classname_tags123.go
+++ b/samples/client/petstore/go/go-petstore/api_fake_classname_tags123.go
@@ -12,15 +12,15 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type FakeClassnameTags123Api interface {
@@ -30,21 +30,21 @@ type FakeClassnameTags123Api interface {
 
 	To test class name in snake case
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestClassnameRequest
 	*/
-	TestClassname(ctx _context.Context) ApiTestClassnameRequest
+	TestClassname(ctx context.Context) ApiTestClassnameRequest
 
 	// TestClassnameExecute executes the request
 	//  @return Client
-	TestClassnameExecute(r ApiTestClassnameRequest) (Client, *_nethttp.Response, error)
+	TestClassnameExecute(r ApiTestClassnameRequest) (*Client, *http.Response, error)
 }
 
 // FakeClassnameTags123ApiService FakeClassnameTags123Api service
 type FakeClassnameTags123ApiService service
 
 type ApiTestClassnameRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeClassnameTags123Api
 	body *Client
 }
@@ -55,7 +55,7 @@ func (r ApiTestClassnameRequest) Body(body Client) ApiTestClassnameRequest {
 	return r
 }
 
-func (r ApiTestClassnameRequest) Execute() (Client, *_nethttp.Response, error) {
+func (r ApiTestClassnameRequest) Execute() (*Client, *http.Response, error) {
 	return r.ApiService.TestClassnameExecute(r)
 }
 
@@ -64,10 +64,10 @@ TestClassname To test class name in snake case
 
 To test class name in snake case
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestClassnameRequest
 */
-func (a *FakeClassnameTags123ApiService) TestClassname(ctx _context.Context) ApiTestClassnameRequest {
+func (a *FakeClassnameTags123ApiService) TestClassname(ctx context.Context) ApiTestClassnameRequest {
 	return ApiTestClassnameRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -76,24 +76,24 @@ func (a *FakeClassnameTags123ApiService) TestClassname(ctx _context.Context) Api
 
 // Execute executes the request
 //  @return Client
-func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassnameRequest) (Client, *_nethttp.Response, error) {
+func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassnameRequest) (*Client, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPatch
+		localVarHTTPMethod   = http.MethodPatch
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Client
+		localVarReturnValue  *Client
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeClassnameTags123ApiService.TestClassname")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake_classname_test"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return localVarReturnValue, nil, reportError("body is required and must be specified")
 	}
@@ -141,15 +141,15 @@ func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassname
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -158,7 +158,7 @@ func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassname
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/client/petstore/go/go-petstore/api_pet.go b/samples/client/petstore/go/go-petstore/api_pet.go
index dc8fe016735..1c97ee676fe 100644
--- a/samples/client/petstore/go/go-petstore/api_pet.go
+++ b/samples/client/petstore/go/go-petstore/api_pet.go
@@ -12,17 +12,17 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"strings"
 	"os"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type PetApi interface {
@@ -30,127 +30,127 @@ type PetApi interface {
 	/*
 	AddPet Add a new pet to the store
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiAddPetRequest
 	*/
-	AddPet(ctx _context.Context) ApiAddPetRequest
+	AddPet(ctx context.Context) ApiAddPetRequest
 
 	// AddPetExecute executes the request
-	AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, error)
+	AddPetExecute(r ApiAddPetRequest) (*http.Response, error)
 
 	/*
 	DeletePet Deletes a pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId Pet id to delete
 	 @return ApiDeletePetRequest
 	*/
-	DeletePet(ctx _context.Context, petId int64) ApiDeletePetRequest
+	DeletePet(ctx context.Context, petId int64) ApiDeletePetRequest
 
 	// DeletePetExecute executes the request
-	DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Response, error)
+	DeletePetExecute(r ApiDeletePetRequest) (*http.Response, error)
 
 	/*
 	FindPetsByStatus Finds Pets by status
 
 	Multiple status values can be provided with comma separated strings
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFindPetsByStatusRequest
 	*/
-	FindPetsByStatus(ctx _context.Context) ApiFindPetsByStatusRequest
+	FindPetsByStatus(ctx context.Context) ApiFindPetsByStatusRequest
 
 	// FindPetsByStatusExecute executes the request
 	//  @return []Pet
-	FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *_nethttp.Response, error)
+	FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *http.Response, error)
 
 	/*
 	FindPetsByTags Finds Pets by tags
 
 	Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFindPetsByTagsRequest
 
 	Deprecated
 	*/
-	FindPetsByTags(ctx _context.Context) ApiFindPetsByTagsRequest
+	FindPetsByTags(ctx context.Context) ApiFindPetsByTagsRequest
 
 	// FindPetsByTagsExecute executes the request
 	//  @return []Pet
 	// Deprecated
-	FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *_nethttp.Response, error)
+	FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *http.Response, error)
 
 	/*
 	GetPetById Find pet by ID
 
 	Returns a single pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet to return
 	 @return ApiGetPetByIdRequest
 	*/
-	GetPetById(ctx _context.Context, petId int64) ApiGetPetByIdRequest
+	GetPetById(ctx context.Context, petId int64) ApiGetPetByIdRequest
 
 	// GetPetByIdExecute executes the request
 	//  @return Pet
-	GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethttp.Response, error)
+	GetPetByIdExecute(r ApiGetPetByIdRequest) (*Pet, *http.Response, error)
 
 	/*
 	UpdatePet Update an existing pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiUpdatePetRequest
 	*/
-	UpdatePet(ctx _context.Context) ApiUpdatePetRequest
+	UpdatePet(ctx context.Context) ApiUpdatePetRequest
 
 	// UpdatePetExecute executes the request
-	UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Response, error)
+	UpdatePetExecute(r ApiUpdatePetRequest) (*http.Response, error)
 
 	/*
 	UpdatePetWithForm Updates a pet in the store with form data
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet that needs to be updated
 	 @return ApiUpdatePetWithFormRequest
 	*/
-	UpdatePetWithForm(ctx _context.Context, petId int64) ApiUpdatePetWithFormRequest
+	UpdatePetWithForm(ctx context.Context, petId int64) ApiUpdatePetWithFormRequest
 
 	// UpdatePetWithFormExecute executes the request
-	UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*_nethttp.Response, error)
+	UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*http.Response, error)
 
 	/*
 	UploadFile uploads an image
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet to update
 	 @return ApiUploadFileRequest
 	*/
-	UploadFile(ctx _context.Context, petId int64) ApiUploadFileRequest
+	UploadFile(ctx context.Context, petId int64) ApiUploadFileRequest
 
 	// UploadFileExecute executes the request
 	//  @return ApiResponse
-	UploadFileExecute(r ApiUploadFileRequest) (ApiResponse, *_nethttp.Response, error)
+	UploadFileExecute(r ApiUploadFileRequest) (*ApiResponse, *http.Response, error)
 
 	/*
 	UploadFileWithRequiredFile uploads an image (required)
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet to update
 	 @return ApiUploadFileWithRequiredFileRequest
 	*/
-	UploadFileWithRequiredFile(ctx _context.Context, petId int64) ApiUploadFileWithRequiredFileRequest
+	UploadFileWithRequiredFile(ctx context.Context, petId int64) ApiUploadFileWithRequiredFileRequest
 
 	// UploadFileWithRequiredFileExecute executes the request
 	//  @return ApiResponse
-	UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (ApiResponse, *_nethttp.Response, error)
+	UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (*ApiResponse, *http.Response, error)
 }
 
 // PetApiService PetApi service
 type PetApiService service
 
 type ApiAddPetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	body *Pet
 }
@@ -161,17 +161,17 @@ func (r ApiAddPetRequest) Body(body Pet) ApiAddPetRequest {
 	return r
 }
 
-func (r ApiAddPetRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiAddPetRequest) Execute() (*http.Response, error) {
 	return r.ApiService.AddPetExecute(r)
 }
 
 /*
 AddPet Add a new pet to the store
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiAddPetRequest
 */
-func (a *PetApiService) AddPet(ctx _context.Context) ApiAddPetRequest {
+func (a *PetApiService) AddPet(ctx context.Context) ApiAddPetRequest {
 	return ApiAddPetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -179,23 +179,23 @@ func (a *PetApiService) AddPet(ctx _context.Context) ApiAddPetRequest {
 }
 
 // Execute executes the request
-func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.AddPet")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -229,15 +229,15 @@ func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, e
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -248,7 +248,7 @@ func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, e
 }
 
 type ApiDeletePetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	apiKey *string
@@ -259,18 +259,18 @@ func (r ApiDeletePetRequest) ApiKey(apiKey string) ApiDeletePetRequest {
 	return r
 }
 
-func (r ApiDeletePetRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiDeletePetRequest) Execute() (*http.Response, error) {
 	return r.ApiService.DeletePetExecute(r)
 }
 
 /*
 DeletePet Deletes a pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId Pet id to delete
  @return ApiDeletePetRequest
 */
-func (a *PetApiService) DeletePet(ctx _context.Context, petId int64) ApiDeletePetRequest {
+func (a *PetApiService) DeletePet(ctx context.Context, petId int64) ApiDeletePetRequest {
 	return ApiDeletePetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -279,24 +279,24 @@ func (a *PetApiService) DeletePet(ctx _context.Context, petId int64) ApiDeletePe
 }
 
 // Execute executes the request
-func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.DeletePet")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -328,15 +328,15 @@ func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Respo
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -347,7 +347,7 @@ func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Respo
 }
 
 type ApiFindPetsByStatusRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	status *[]string
 }
@@ -358,7 +358,7 @@ func (r ApiFindPetsByStatusRequest) Status(status []string) ApiFindPetsByStatusR
 	return r
 }
 
-func (r ApiFindPetsByStatusRequest) Execute() ([]Pet, *_nethttp.Response, error) {
+func (r ApiFindPetsByStatusRequest) Execute() ([]Pet, *http.Response, error) {
 	return r.ApiService.FindPetsByStatusExecute(r)
 }
 
@@ -367,10 +367,10 @@ FindPetsByStatus Finds Pets by status
 
 Multiple status values can be provided with comma separated strings
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFindPetsByStatusRequest
 */
-func (a *PetApiService) FindPetsByStatus(ctx _context.Context) ApiFindPetsByStatusRequest {
+func (a *PetApiService) FindPetsByStatus(ctx context.Context) ApiFindPetsByStatusRequest {
 	return ApiFindPetsByStatusRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -379,9 +379,9 @@ func (a *PetApiService) FindPetsByStatus(ctx _context.Context) ApiFindPetsByStat
 
 // Execute executes the request
 //  @return []Pet
-func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *_nethttp.Response, error) {
+func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  []Pet
@@ -389,14 +389,14 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.FindPetsByStatus")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/findByStatus"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.status == nil {
 		return localVarReturnValue, nil, reportError("status is required and must be specified")
 	}
@@ -429,15 +429,15 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -446,7 +446,7 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -457,7 +457,7 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 }
 
 type ApiFindPetsByTagsRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	tags *[]string
 }
@@ -468,7 +468,7 @@ func (r ApiFindPetsByTagsRequest) Tags(tags []string) ApiFindPetsByTagsRequest {
 	return r
 }
 
-func (r ApiFindPetsByTagsRequest) Execute() ([]Pet, *_nethttp.Response, error) {
+func (r ApiFindPetsByTagsRequest) Execute() ([]Pet, *http.Response, error) {
 	return r.ApiService.FindPetsByTagsExecute(r)
 }
 
@@ -477,12 +477,12 @@ FindPetsByTags Finds Pets by tags
 
 Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFindPetsByTagsRequest
 
 Deprecated
 */
-func (a *PetApiService) FindPetsByTags(ctx _context.Context) ApiFindPetsByTagsRequest {
+func (a *PetApiService) FindPetsByTags(ctx context.Context) ApiFindPetsByTagsRequest {
 	return ApiFindPetsByTagsRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -492,9 +492,9 @@ func (a *PetApiService) FindPetsByTags(ctx _context.Context) ApiFindPetsByTagsRe
 // Execute executes the request
 //  @return []Pet
 // Deprecated
-func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *_nethttp.Response, error) {
+func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  []Pet
@@ -502,14 +502,14 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.FindPetsByTags")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/findByTags"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.tags == nil {
 		return localVarReturnValue, nil, reportError("tags is required and must be specified")
 	}
@@ -542,15 +542,15 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -559,7 +559,7 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -570,13 +570,13 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 }
 
 type ApiGetPetByIdRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 }
 
 
-func (r ApiGetPetByIdRequest) Execute() (Pet, *_nethttp.Response, error) {
+func (r ApiGetPetByIdRequest) Execute() (*Pet, *http.Response, error) {
 	return r.ApiService.GetPetByIdExecute(r)
 }
 
@@ -585,11 +585,11 @@ GetPetById Find pet by ID
 
 Returns a single pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet to return
  @return ApiGetPetByIdRequest
 */
-func (a *PetApiService) GetPetById(ctx _context.Context, petId int64) ApiGetPetByIdRequest {
+func (a *PetApiService) GetPetById(ctx context.Context, petId int64) ApiGetPetByIdRequest {
 	return ApiGetPetByIdRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -599,25 +599,25 @@ func (a *PetApiService) GetPetById(ctx _context.Context, petId int64) ApiGetPetB
 
 // Execute executes the request
 //  @return Pet
-func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethttp.Response, error) {
+func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (*Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Pet
+		localVarReturnValue  *Pet
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.GetPetById")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -660,15 +660,15 @@ func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethtt
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -677,7 +677,7 @@ func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethtt
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -688,7 +688,7 @@ func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethtt
 }
 
 type ApiUpdatePetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	body *Pet
 }
@@ -699,17 +699,17 @@ func (r ApiUpdatePetRequest) Body(body Pet) ApiUpdatePetRequest {
 	return r
 }
 
-func (r ApiUpdatePetRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiUpdatePetRequest) Execute() (*http.Response, error) {
 	return r.ApiService.UpdatePetExecute(r)
 }
 
 /*
 UpdatePet Update an existing pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiUpdatePetRequest
 */
-func (a *PetApiService) UpdatePet(ctx _context.Context) ApiUpdatePetRequest {
+func (a *PetApiService) UpdatePet(ctx context.Context) ApiUpdatePetRequest {
 	return ApiUpdatePetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -717,23 +717,23 @@ func (a *PetApiService) UpdatePet(ctx _context.Context) ApiUpdatePetRequest {
 }
 
 // Execute executes the request
-func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UpdatePet")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -767,15 +767,15 @@ func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Respo
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -786,7 +786,7 @@ func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Respo
 }
 
 type ApiUpdatePetWithFormRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	name *string
@@ -804,18 +804,18 @@ func (r ApiUpdatePetWithFormRequest) Status(status string) ApiUpdatePetWithFormR
 	return r
 }
 
-func (r ApiUpdatePetWithFormRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiUpdatePetWithFormRequest) Execute() (*http.Response, error) {
 	return r.ApiService.UpdatePetWithFormExecute(r)
 }
 
 /*
 UpdatePetWithForm Updates a pet in the store with form data
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet that needs to be updated
  @return ApiUpdatePetWithFormRequest
 */
-func (a *PetApiService) UpdatePetWithForm(ctx _context.Context, petId int64) ApiUpdatePetWithFormRequest {
+func (a *PetApiService) UpdatePetWithForm(ctx context.Context, petId int64) ApiUpdatePetWithFormRequest {
 	return ApiUpdatePetWithFormRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -824,24 +824,24 @@ func (a *PetApiService) UpdatePetWithForm(ctx _context.Context, petId int64) Api
 }
 
 // Execute executes the request
-func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UpdatePetWithForm")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"application/x-www-form-urlencoded"}
@@ -876,15 +876,15 @@ func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest)
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -895,7 +895,7 @@ func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest)
 }
 
 type ApiUploadFileRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	additionalMetadata *string
@@ -913,18 +913,18 @@ func (r ApiUploadFileRequest) File(file *os.File) ApiUploadFileRequest {
 	return r
 }
 
-func (r ApiUploadFileRequest) Execute() (ApiResponse, *_nethttp.Response, error) {
+func (r ApiUploadFileRequest) Execute() (*ApiResponse, *http.Response, error) {
 	return r.ApiService.UploadFileExecute(r)
 }
 
 /*
 UploadFile uploads an image
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet to update
  @return ApiUploadFileRequest
 */
-func (a *PetApiService) UploadFile(ctx _context.Context, petId int64) ApiUploadFileRequest {
+func (a *PetApiService) UploadFile(ctx context.Context, petId int64) ApiUploadFileRequest {
 	return ApiUploadFileRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -934,25 +934,25 @@ func (a *PetApiService) UploadFile(ctx _context.Context, petId int64) ApiUploadF
 
 // Execute executes the request
 //  @return ApiResponse
-func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse, *_nethttp.Response, error) {
+func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (*ApiResponse, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  ApiResponse
+		localVarReturnValue  *ApiResponse
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UploadFile")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}/uploadImage"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"multipart/form-data"}
@@ -985,7 +985,7 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 		fileLocalVarFile = *r.file
 	}
 	if fileLocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll(fileLocalVarFile)
+		fbs, _ := ioutil.ReadAll(fileLocalVarFile)
 		fileLocalVarFileBytes = fbs
 		fileLocalVarFileName = fileLocalVarFile.Name()
 		fileLocalVarFile.Close()
@@ -1001,15 +1001,15 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1018,7 +1018,7 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -1029,7 +1029,7 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 }
 
 type ApiUploadFileWithRequiredFileRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	requiredFile **os.File
@@ -1047,18 +1047,18 @@ func (r ApiUploadFileWithRequiredFileRequest) AdditionalMetadata(additionalMetad
 	return r
 }
 
-func (r ApiUploadFileWithRequiredFileRequest) Execute() (ApiResponse, *_nethttp.Response, error) {
+func (r ApiUploadFileWithRequiredFileRequest) Execute() (*ApiResponse, *http.Response, error) {
 	return r.ApiService.UploadFileWithRequiredFileExecute(r)
 }
 
 /*
 UploadFileWithRequiredFile uploads an image (required)
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet to update
  @return ApiUploadFileWithRequiredFileRequest
 */
-func (a *PetApiService) UploadFileWithRequiredFile(ctx _context.Context, petId int64) ApiUploadFileWithRequiredFileRequest {
+func (a *PetApiService) UploadFileWithRequiredFile(ctx context.Context, petId int64) ApiUploadFileWithRequiredFileRequest {
 	return ApiUploadFileWithRequiredFileRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1068,25 +1068,25 @@ func (a *PetApiService) UploadFileWithRequiredFile(ctx _context.Context, petId i
 
 // Execute executes the request
 //  @return ApiResponse
-func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (ApiResponse, *_nethttp.Response, error) {
+func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (*ApiResponse, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  ApiResponse
+		localVarReturnValue  *ApiResponse
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UploadFileWithRequiredFile")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/{petId}/uploadImageWithRequiredFile"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.requiredFile == nil {
 		return localVarReturnValue, nil, reportError("requiredFile is required and must be specified")
 	}
@@ -1119,7 +1119,7 @@ func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithReq
 
 	requiredFileLocalVarFile := *r.requiredFile
 	if requiredFileLocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll(requiredFileLocalVarFile)
+		fbs, _ := ioutil.ReadAll(requiredFileLocalVarFile)
 		requiredFileLocalVarFileBytes = fbs
 		requiredFileLocalVarFileName = requiredFileLocalVarFile.Name()
 		requiredFileLocalVarFile.Close()
@@ -1135,15 +1135,15 @@ func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithReq
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1152,7 +1152,7 @@ func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithReq
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/client/petstore/go/go-petstore/api_store.go b/samples/client/petstore/go/go-petstore/api_store.go
index be6336216da..61dcc483761 100644
--- a/samples/client/petstore/go/go-petstore/api_store.go
+++ b/samples/client/petstore/go/go-petstore/api_store.go
@@ -12,16 +12,16 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"strings"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type StoreApi interface {
@@ -31,68 +31,68 @@ type StoreApi interface {
 
 	For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param orderId ID of the order that needs to be deleted
 	 @return ApiDeleteOrderRequest
 	*/
-	DeleteOrder(ctx _context.Context, orderId string) ApiDeleteOrderRequest
+	DeleteOrder(ctx context.Context, orderId string) ApiDeleteOrderRequest
 
 	// DeleteOrderExecute executes the request
-	DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp.Response, error)
+	DeleteOrderExecute(r ApiDeleteOrderRequest) (*http.Response, error)
 
 	/*
 	GetInventory Returns pet inventories by status
 
 	Returns a map of status codes to quantities
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiGetInventoryRequest
 	*/
-	GetInventory(ctx _context.Context) ApiGetInventoryRequest
+	GetInventory(ctx context.Context) ApiGetInventoryRequest
 
 	// GetInventoryExecute executes the request
 	//  @return map[string]int32
-	GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *_nethttp.Response, error)
+	GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *http.Response, error)
 
 	/*
 	GetOrderById Find purchase order by ID
 
 	For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param orderId ID of pet that needs to be fetched
 	 @return ApiGetOrderByIdRequest
 	*/
-	GetOrderById(ctx _context.Context, orderId int64) ApiGetOrderByIdRequest
+	GetOrderById(ctx context.Context, orderId int64) ApiGetOrderByIdRequest
 
 	// GetOrderByIdExecute executes the request
 	//  @return Order
-	GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order, *_nethttp.Response, error)
+	GetOrderByIdExecute(r ApiGetOrderByIdRequest) (*Order, *http.Response, error)
 
 	/*
 	PlaceOrder Place an order for a pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiPlaceOrderRequest
 	*/
-	PlaceOrder(ctx _context.Context) ApiPlaceOrderRequest
+	PlaceOrder(ctx context.Context) ApiPlaceOrderRequest
 
 	// PlaceOrderExecute executes the request
 	//  @return Order
-	PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_nethttp.Response, error)
+	PlaceOrderExecute(r ApiPlaceOrderRequest) (*Order, *http.Response, error)
 }
 
 // StoreApiService StoreApi service
 type StoreApiService service
 
 type ApiDeleteOrderRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 	orderId string
 }
 
 
-func (r ApiDeleteOrderRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiDeleteOrderRequest) Execute() (*http.Response, error) {
 	return r.ApiService.DeleteOrderExecute(r)
 }
 
@@ -101,11 +101,11 @@ DeleteOrder Delete purchase order by ID
 
 For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param orderId ID of the order that needs to be deleted
  @return ApiDeleteOrderRequest
 */
-func (a *StoreApiService) DeleteOrder(ctx _context.Context, orderId string) ApiDeleteOrderRequest {
+func (a *StoreApiService) DeleteOrder(ctx context.Context, orderId string) ApiDeleteOrderRequest {
 	return ApiDeleteOrderRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -114,24 +114,24 @@ func (a *StoreApiService) DeleteOrder(ctx _context.Context, orderId string) ApiD
 }
 
 // Execute executes the request
-func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp.Response, error) {
+func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.DeleteOrder")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/order/{order_id}"
-	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", _neturl.PathEscape(parameterToString(r.orderId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", url.PathEscape(parameterToString(r.orderId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -160,15 +160,15 @@ func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -179,12 +179,12 @@ func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp
 }
 
 type ApiGetInventoryRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 }
 
 
-func (r ApiGetInventoryRequest) Execute() (map[string]int32, *_nethttp.Response, error) {
+func (r ApiGetInventoryRequest) Execute() (map[string]int32, *http.Response, error) {
 	return r.ApiService.GetInventoryExecute(r)
 }
 
@@ -193,10 +193,10 @@ GetInventory Returns pet inventories by status
 
 Returns a map of status codes to quantities
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiGetInventoryRequest
 */
-func (a *StoreApiService) GetInventory(ctx _context.Context) ApiGetInventoryRequest {
+func (a *StoreApiService) GetInventory(ctx context.Context) ApiGetInventoryRequest {
 	return ApiGetInventoryRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -205,9 +205,9 @@ func (a *StoreApiService) GetInventory(ctx _context.Context) ApiGetInventoryRequ
 
 // Execute executes the request
 //  @return map[string]int32
-func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *_nethttp.Response, error) {
+func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  map[string]int32
@@ -215,14 +215,14 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.GetInventory")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/inventory"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -265,15 +265,15 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -282,7 +282,7 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -293,13 +293,13 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 }
 
 type ApiGetOrderByIdRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 	orderId int64
 }
 
 
-func (r ApiGetOrderByIdRequest) Execute() (Order, *_nethttp.Response, error) {
+func (r ApiGetOrderByIdRequest) Execute() (*Order, *http.Response, error) {
 	return r.ApiService.GetOrderByIdExecute(r)
 }
 
@@ -308,11 +308,11 @@ GetOrderById Find purchase order by ID
 
 For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param orderId ID of pet that needs to be fetched
  @return ApiGetOrderByIdRequest
 */
-func (a *StoreApiService) GetOrderById(ctx _context.Context, orderId int64) ApiGetOrderByIdRequest {
+func (a *StoreApiService) GetOrderById(ctx context.Context, orderId int64) ApiGetOrderByIdRequest {
 	return ApiGetOrderByIdRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -322,25 +322,25 @@ func (a *StoreApiService) GetOrderById(ctx _context.Context, orderId int64) ApiG
 
 // Execute executes the request
 //  @return Order
-func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order, *_nethttp.Response, error) {
+func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (*Order, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Order
+		localVarReturnValue  *Order
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.GetOrderById")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/order/{order_id}"
-	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", _neturl.PathEscape(parameterToString(r.orderId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", url.PathEscape(parameterToString(r.orderId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.orderId < 1 {
 		return localVarReturnValue, nil, reportError("orderId must be greater than 1")
 	}
@@ -375,15 +375,15 @@ func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order,
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -392,7 +392,7 @@ func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order,
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -403,7 +403,7 @@ func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order,
 }
 
 type ApiPlaceOrderRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 	body *Order
 }
@@ -414,17 +414,17 @@ func (r ApiPlaceOrderRequest) Body(body Order) ApiPlaceOrderRequest {
 	return r
 }
 
-func (r ApiPlaceOrderRequest) Execute() (Order, *_nethttp.Response, error) {
+func (r ApiPlaceOrderRequest) Execute() (*Order, *http.Response, error) {
 	return r.ApiService.PlaceOrderExecute(r)
 }
 
 /*
 PlaceOrder Place an order for a pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiPlaceOrderRequest
 */
-func (a *StoreApiService) PlaceOrder(ctx _context.Context) ApiPlaceOrderRequest {
+func (a *StoreApiService) PlaceOrder(ctx context.Context) ApiPlaceOrderRequest {
 	return ApiPlaceOrderRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -433,24 +433,24 @@ func (a *StoreApiService) PlaceOrder(ctx _context.Context) ApiPlaceOrderRequest
 
 // Execute executes the request
 //  @return Order
-func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_nethttp.Response, error) {
+func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (*Order, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Order
+		localVarReturnValue  *Order
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.PlaceOrder")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/order"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return localVarReturnValue, nil, reportError("body is required and must be specified")
 	}
@@ -484,15 +484,15 @@ func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_ne
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -501,7 +501,7 @@ func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_ne
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/client/petstore/go/go-petstore/api_user.go b/samples/client/petstore/go/go-petstore/api_user.go
index d6f2c7f710b..a8107b6e461 100644
--- a/samples/client/petstore/go/go-petstore/api_user.go
+++ b/samples/client/petstore/go/go-petstore/api_user.go
@@ -12,16 +12,16 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"strings"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type UserApi interface {
@@ -31,106 +31,106 @@ type UserApi interface {
 
 	This can only be done by the logged in user.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateUserRequest
 	*/
-	CreateUser(ctx _context.Context) ApiCreateUserRequest
+	CreateUser(ctx context.Context) ApiCreateUserRequest
 
 	// CreateUserExecute executes the request
-	CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Response, error)
+	CreateUserExecute(r ApiCreateUserRequest) (*http.Response, error)
 
 	/*
 	CreateUsersWithArrayInput Creates list of users with given input array
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateUsersWithArrayInputRequest
 	*/
-	CreateUsersWithArrayInput(ctx _context.Context) ApiCreateUsersWithArrayInputRequest
+	CreateUsersWithArrayInput(ctx context.Context) ApiCreateUsersWithArrayInputRequest
 
 	// CreateUsersWithArrayInputExecute executes the request
-	CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*_nethttp.Response, error)
+	CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*http.Response, error)
 
 	/*
 	CreateUsersWithListInput Creates list of users with given input array
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateUsersWithListInputRequest
 	*/
-	CreateUsersWithListInput(ctx _context.Context) ApiCreateUsersWithListInputRequest
+	CreateUsersWithListInput(ctx context.Context) ApiCreateUsersWithListInputRequest
 
 	// CreateUsersWithListInputExecute executes the request
-	CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*_nethttp.Response, error)
+	CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*http.Response, error)
 
 	/*
 	DeleteUser Delete user
 
 	This can only be done by the logged in user.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param username The name that needs to be deleted
 	 @return ApiDeleteUserRequest
 	*/
-	DeleteUser(ctx _context.Context, username string) ApiDeleteUserRequest
+	DeleteUser(ctx context.Context, username string) ApiDeleteUserRequest
 
 	// DeleteUserExecute executes the request
-	DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Response, error)
+	DeleteUserExecute(r ApiDeleteUserRequest) (*http.Response, error)
 
 	/*
 	GetUserByName Get user by user name
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param username The name that needs to be fetched. Use user1 for testing.
 	 @return ApiGetUserByNameRequest
 	*/
-	GetUserByName(ctx _context.Context, username string) ApiGetUserByNameRequest
+	GetUserByName(ctx context.Context, username string) ApiGetUserByNameRequest
 
 	// GetUserByNameExecute executes the request
 	//  @return User
-	GetUserByNameExecute(r ApiGetUserByNameRequest) (User, *_nethttp.Response, error)
+	GetUserByNameExecute(r ApiGetUserByNameRequest) (*User, *http.Response, error)
 
 	/*
 	LoginUser Logs user into the system
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiLoginUserRequest
 	*/
-	LoginUser(ctx _context.Context) ApiLoginUserRequest
+	LoginUser(ctx context.Context) ApiLoginUserRequest
 
 	// LoginUserExecute executes the request
 	//  @return string
-	LoginUserExecute(r ApiLoginUserRequest) (string, *_nethttp.Response, error)
+	LoginUserExecute(r ApiLoginUserRequest) (string, *http.Response, error)
 
 	/*
 	LogoutUser Logs out current logged in user session
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiLogoutUserRequest
 	*/
-	LogoutUser(ctx _context.Context) ApiLogoutUserRequest
+	LogoutUser(ctx context.Context) ApiLogoutUserRequest
 
 	// LogoutUserExecute executes the request
-	LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Response, error)
+	LogoutUserExecute(r ApiLogoutUserRequest) (*http.Response, error)
 
 	/*
 	UpdateUser Updated user
 
 	This can only be done by the logged in user.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param username name that need to be deleted
 	 @return ApiUpdateUserRequest
 	*/
-	UpdateUser(ctx _context.Context, username string) ApiUpdateUserRequest
+	UpdateUser(ctx context.Context, username string) ApiUpdateUserRequest
 
 	// UpdateUserExecute executes the request
-	UpdateUserExecute(r ApiUpdateUserRequest) (*_nethttp.Response, error)
+	UpdateUserExecute(r ApiUpdateUserRequest) (*http.Response, error)
 }
 
 // UserApiService UserApi service
 type UserApiService service
 
 type ApiCreateUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	body *User
 }
@@ -141,7 +141,7 @@ func (r ApiCreateUserRequest) Body(body User) ApiCreateUserRequest {
 	return r
 }
 
-func (r ApiCreateUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateUserExecute(r)
 }
 
@@ -150,10 +150,10 @@ CreateUser Create user
 
 This can only be done by the logged in user.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateUserRequest
 */
-func (a *UserApiService) CreateUser(ctx _context.Context) ApiCreateUserRequest {
+func (a *UserApiService) CreateUser(ctx context.Context) ApiCreateUserRequest {
 	return ApiCreateUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -161,23 +161,23 @@ func (a *UserApiService) CreateUser(ctx _context.Context) ApiCreateUserRequest {
 }
 
 // Execute executes the request
-func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.CreateUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -211,15 +211,15 @@ func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -230,7 +230,7 @@ func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Re
 }
 
 type ApiCreateUsersWithArrayInputRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	body *[]User
 }
@@ -241,17 +241,17 @@ func (r ApiCreateUsersWithArrayInputRequest) Body(body []User) ApiCreateUsersWit
 	return r
 }
 
-func (r ApiCreateUsersWithArrayInputRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateUsersWithArrayInputRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateUsersWithArrayInputExecute(r)
 }
 
 /*
 CreateUsersWithArrayInput Creates list of users with given input array
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateUsersWithArrayInputRequest
 */
-func (a *UserApiService) CreateUsersWithArrayInput(ctx _context.Context) ApiCreateUsersWithArrayInputRequest {
+func (a *UserApiService) CreateUsersWithArrayInput(ctx context.Context) ApiCreateUsersWithArrayInputRequest {
 	return ApiCreateUsersWithArrayInputRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -259,23 +259,23 @@ func (a *UserApiService) CreateUsersWithArrayInput(ctx _context.Context) ApiCrea
 }
 
 // Execute executes the request
-func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.CreateUsersWithArrayInput")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/createWithArray"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -309,15 +309,15 @@ func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithAr
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -328,7 +328,7 @@ func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithAr
 }
 
 type ApiCreateUsersWithListInputRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	body *[]User
 }
@@ -339,17 +339,17 @@ func (r ApiCreateUsersWithListInputRequest) Body(body []User) ApiCreateUsersWith
 	return r
 }
 
-func (r ApiCreateUsersWithListInputRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateUsersWithListInputRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateUsersWithListInputExecute(r)
 }
 
 /*
 CreateUsersWithListInput Creates list of users with given input array
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateUsersWithListInputRequest
 */
-func (a *UserApiService) CreateUsersWithListInput(ctx _context.Context) ApiCreateUsersWithListInputRequest {
+func (a *UserApiService) CreateUsersWithListInput(ctx context.Context) ApiCreateUsersWithListInputRequest {
 	return ApiCreateUsersWithListInputRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -357,23 +357,23 @@ func (a *UserApiService) CreateUsersWithListInput(ctx _context.Context) ApiCreat
 }
 
 // Execute executes the request
-func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.CreateUsersWithListInput")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/createWithList"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -407,15 +407,15 @@ func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithLis
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -426,13 +426,13 @@ func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithLis
 }
 
 type ApiDeleteUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username string
 }
 
 
-func (r ApiDeleteUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiDeleteUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.DeleteUserExecute(r)
 }
 
@@ -441,11 +441,11 @@ DeleteUser Delete user
 
 This can only be done by the logged in user.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param username The name that needs to be deleted
  @return ApiDeleteUserRequest
 */
-func (a *UserApiService) DeleteUser(ctx _context.Context, username string) ApiDeleteUserRequest {
+func (a *UserApiService) DeleteUser(ctx context.Context, username string) ApiDeleteUserRequest {
 	return ApiDeleteUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -454,24 +454,24 @@ func (a *UserApiService) DeleteUser(ctx _context.Context, username string) ApiDe
 }
 
 // Execute executes the request
-func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.DeleteUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/{username}"
-	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", _neturl.PathEscape(parameterToString(r.username, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", url.PathEscape(parameterToString(r.username, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -500,15 +500,15 @@ func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -519,24 +519,24 @@ func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Re
 }
 
 type ApiGetUserByNameRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username string
 }
 
 
-func (r ApiGetUserByNameRequest) Execute() (User, *_nethttp.Response, error) {
+func (r ApiGetUserByNameRequest) Execute() (*User, *http.Response, error) {
 	return r.ApiService.GetUserByNameExecute(r)
 }
 
 /*
 GetUserByName Get user by user name
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param username The name that needs to be fetched. Use user1 for testing.
  @return ApiGetUserByNameRequest
 */
-func (a *UserApiService) GetUserByName(ctx _context.Context, username string) ApiGetUserByNameRequest {
+func (a *UserApiService) GetUserByName(ctx context.Context, username string) ApiGetUserByNameRequest {
 	return ApiGetUserByNameRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -546,25 +546,25 @@ func (a *UserApiService) GetUserByName(ctx _context.Context, username string) Ap
 
 // Execute executes the request
 //  @return User
-func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User, *_nethttp.Response, error) {
+func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (*User, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  User
+		localVarReturnValue  *User
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.GetUserByName")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/{username}"
-	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", _neturl.PathEscape(parameterToString(r.username, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", url.PathEscape(parameterToString(r.username, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -593,15 +593,15 @@ func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User,
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -610,7 +610,7 @@ func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User,
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -621,7 +621,7 @@ func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User,
 }
 
 type ApiLoginUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username *string
 	password *string
@@ -638,17 +638,17 @@ func (r ApiLoginUserRequest) Password(password string) ApiLoginUserRequest {
 	return r
 }
 
-func (r ApiLoginUserRequest) Execute() (string, *_nethttp.Response, error) {
+func (r ApiLoginUserRequest) Execute() (string, *http.Response, error) {
 	return r.ApiService.LoginUserExecute(r)
 }
 
 /*
 LoginUser Logs user into the system
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiLoginUserRequest
 */
-func (a *UserApiService) LoginUser(ctx _context.Context) ApiLoginUserRequest {
+func (a *UserApiService) LoginUser(ctx context.Context) ApiLoginUserRequest {
 	return ApiLoginUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -657,9 +657,9 @@ func (a *UserApiService) LoginUser(ctx _context.Context) ApiLoginUserRequest {
 
 // Execute executes the request
 //  @return string
-func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_nethttp.Response, error) {
+func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  string
@@ -667,14 +667,14 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.LoginUser")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/login"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.username == nil {
 		return localVarReturnValue, nil, reportError("username is required and must be specified")
 	}
@@ -711,15 +711,15 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -728,7 +728,7 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -739,22 +739,22 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 }
 
 type ApiLogoutUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 }
 
 
-func (r ApiLogoutUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiLogoutUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.LogoutUserExecute(r)
 }
 
 /*
 LogoutUser Logs out current logged in user session
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiLogoutUserRequest
 */
-func (a *UserApiService) LogoutUser(ctx _context.Context) ApiLogoutUserRequest {
+func (a *UserApiService) LogoutUser(ctx context.Context) ApiLogoutUserRequest {
 	return ApiLogoutUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -762,23 +762,23 @@ func (a *UserApiService) LogoutUser(ctx _context.Context) ApiLogoutUserRequest {
 }
 
 // Execute executes the request
-func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.LogoutUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/logout"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -807,15 +807,15 @@ func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -826,7 +826,7 @@ func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Re
 }
 
 type ApiUpdateUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username string
 	body *User
@@ -838,7 +838,7 @@ func (r ApiUpdateUserRequest) Body(body User) ApiUpdateUserRequest {
 	return r
 }
 
-func (r ApiUpdateUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiUpdateUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.UpdateUserExecute(r)
 }
 
@@ -847,11 +847,11 @@ UpdateUser Updated user
 
 This can only be done by the logged in user.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param username name that need to be deleted
  @return ApiUpdateUserRequest
 */
-func (a *UserApiService) UpdateUser(ctx _context.Context, username string) ApiUpdateUserRequest {
+func (a *UserApiService) UpdateUser(ctx context.Context, username string) ApiUpdateUserRequest {
 	return ApiUpdateUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -860,24 +860,24 @@ func (a *UserApiService) UpdateUser(ctx _context.Context, username string) ApiUp
 }
 
 // Execute executes the request
-func (a *UserApiService) UpdateUserExecute(r ApiUpdateUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) UpdateUserExecute(r ApiUpdateUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.UpdateUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/{username}"
-	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", _neturl.PathEscape(parameterToString(r.username, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", url.PathEscape(parameterToString(r.username, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.body == nil {
 		return nil, reportError("body is required and must be specified")
 	}
@@ -911,15 +911,15 @@ func (a *UserApiService) UpdateUserExecute(r ApiUpdateUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
diff --git a/samples/client/petstore/go/go-petstore/client.go b/samples/client/petstore/go/go-petstore/client.go
index 8fbafd32935..d3c90d43129 100644
--- a/samples/client/petstore/go/go-petstore/client.go
+++ b/samples/client/petstore/go/go-petstore/client.go
@@ -437,6 +437,13 @@ func reportError(format string, a ...interface{}) error {
 	return fmt.Errorf(format, a...)
 }
 
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
 // Set request body from an interface{}
 func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
 	if bodyBuf == nil {
diff --git a/samples/client/petstore/go/go-petstore/docs/AnotherFakeApi.md b/samples/client/petstore/go/go-petstore/docs/AnotherFakeApi.md
index 6243abe3c4d..2996979cd19 100644
--- a/samples/client/petstore/go/go-petstore/docs/AnotherFakeApi.md
+++ b/samples/client/petstore/go/go-petstore/docs/AnotherFakeApi.md
@@ -32,8 +32,8 @@ func main() {
     body := *openapiclient.NewClient() // Client | client model
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.AnotherFakeApi.Call123TestSpecialTags(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.AnotherFakeApi.Call123TestSpecialTags(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `AnotherFakeApi.Call123TestSpecialTags``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/client/petstore/go/go-petstore/docs/FakeApi.md b/samples/client/petstore/go/go-petstore/docs/FakeApi.md
index 9a4a2bbd5ff..e51cddca5bd 100644
--- a/samples/client/petstore/go/go-petstore/docs/FakeApi.md
+++ b/samples/client/petstore/go/go-petstore/docs/FakeApi.md
@@ -45,8 +45,8 @@ func main() {
     xmlItem := *openapiclient.NewXmlItem() // XmlItem | XmlItem Body
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.CreateXmlItem(context.Background()).XmlItem(xmlItem).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.CreateXmlItem(context.Background()).XmlItem(xmlItem).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.CreateXmlItem``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -109,8 +109,8 @@ func main() {
     body := true // bool | Input boolean as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterBooleanSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterBooleanSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterBooleanSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -175,8 +175,8 @@ func main() {
     body := *openapiclient.NewOuterComposite() // OuterComposite | Input composite as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterCompositeSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterCompositeSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterCompositeSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -241,8 +241,8 @@ func main() {
     body := float32(8.14) // float32 | Input number as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterNumberSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterNumberSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterNumberSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -307,8 +307,8 @@ func main() {
     body := "body_example" // string | Input string as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterStringSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterStringSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterStringSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -373,8 +373,8 @@ func main() {
     body := *openapiclient.NewFileSchemaTestClass() // FileSchemaTestClass | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestBodyWithFileSchema(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestBodyWithFileSchema(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestBodyWithFileSchema``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -436,8 +436,8 @@ func main() {
     body := *openapiclient.NewUser() // User | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestBodyWithQueryParams(context.Background()).Query(query).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestBodyWithQueryParams(context.Background()).Query(query).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestBodyWithQueryParams``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -501,8 +501,8 @@ func main() {
     body := *openapiclient.NewClient() // Client | client model
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestClientModel(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestClientModel(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestClientModel``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -581,8 +581,8 @@ func main() {
     callback := "callback_example" // string | None (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestEndpointParameters(context.Background()).Number(number).Double(double).PatternWithoutDelimiter(patternWithoutDelimiter).Byte_(byte_).Integer(integer).Int32_(int32_).Int64_(int64_).Float(float).String_(string_).Binary(binary).Date(date).DateTime(dateTime).Password(password).Callback(callback).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestEndpointParameters(context.Background()).Number(number).Double(double).PatternWithoutDelimiter(patternWithoutDelimiter).Byte_(byte_).Integer(integer).Int32_(int32_).Int64_(int64_).Float(float).String_(string_).Binary(binary).Date(date).DateTime(dateTime).Password(password).Callback(callback).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestEndpointParameters``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -665,8 +665,8 @@ func main() {
     enumFormString := "enumFormString_example" // string | Form parameter enum test (string) (optional) (default to "-efg")
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestEnumParameters(context.Background()).EnumHeaderStringArray(enumHeaderStringArray).EnumHeaderString(enumHeaderString).EnumQueryStringArray(enumQueryStringArray).EnumQueryString(enumQueryString).EnumQueryInteger(enumQueryInteger).EnumQueryDouble(enumQueryDouble).EnumFormStringArray(enumFormStringArray).EnumFormString(enumFormString).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestEnumParameters(context.Background()).EnumHeaderStringArray(enumHeaderStringArray).EnumHeaderString(enumHeaderString).EnumQueryStringArray(enumQueryStringArray).EnumQueryString(enumQueryString).EnumQueryInteger(enumQueryInteger).EnumQueryDouble(enumQueryDouble).EnumFormStringArray(enumFormStringArray).EnumFormString(enumFormString).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestEnumParameters``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -741,8 +741,8 @@ func main() {
     int64Group := int64(789) // int64 | Integer in group parameters (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestGroupParameters(context.Background()).RequiredStringGroup(requiredStringGroup).RequiredBooleanGroup(requiredBooleanGroup).RequiredInt64Group(requiredInt64Group).StringGroup(stringGroup).BooleanGroup(booleanGroup).Int64Group(int64Group).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestGroupParameters(context.Background()).RequiredStringGroup(requiredStringGroup).RequiredBooleanGroup(requiredBooleanGroup).RequiredInt64Group(requiredInt64Group).StringGroup(stringGroup).BooleanGroup(booleanGroup).Int64Group(int64Group).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestGroupParameters``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -808,8 +808,8 @@ func main() {
     param := map[string]string{"key": "Inner_example"} // map[string]string | request body
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestInlineAdditionalProperties(context.Background()).Param(param).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestInlineAdditionalProperties(context.Background()).Param(param).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestInlineAdditionalProperties``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -871,8 +871,8 @@ func main() {
     param2 := "param2_example" // string | field2
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestJsonFormData(context.Background()).Param(param).Param2(param2).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestJsonFormData(context.Background()).Param(param).Param2(param2).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestJsonFormData``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -940,8 +940,8 @@ func main() {
     context := []string{"Inner_example"} // []string | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestQueryParameterCollectionFormat(context.Background()).Pipe(pipe).Ioutil(ioutil).Http(http).Url(url).Context(context).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestQueryParameterCollectionFormat(context.Background()).Pipe(pipe).Ioutil(ioutil).Http(http).Url(url).Context(context).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestQueryParameterCollectionFormat``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md b/samples/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md
index b206d05d09c..71891e79275 100644
--- a/samples/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md
+++ b/samples/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md
@@ -32,8 +32,8 @@ func main() {
     body := *openapiclient.NewClient() // Client | client model
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeClassnameTags123Api.TestClassname(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeClassnameTags123Api.TestClassname(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeClassnameTags123Api.TestClassname``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/client/petstore/go/go-petstore/docs/PetApi.md b/samples/client/petstore/go/go-petstore/docs/PetApi.md
index d93265c16ed..81c7e187ac7 100644
--- a/samples/client/petstore/go/go-petstore/docs/PetApi.md
+++ b/samples/client/petstore/go/go-petstore/docs/PetApi.md
@@ -38,8 +38,8 @@ func main() {
     body := *openapiclient.NewPet("doggie", []string{"PhotoUrls_example"}) // Pet | Pet object that needs to be added to the store
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.AddPet(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.AddPet(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.AddPet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -101,8 +101,8 @@ func main() {
     apiKey := "apiKey_example" // string |  (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.DeletePet(context.Background(), petId).ApiKey(apiKey).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.DeletePet(context.Background(), petId).ApiKey(apiKey).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.DeletePet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -170,8 +170,8 @@ func main() {
     status := []string{"Status_example"} // []string | Status values that need to be considered for filter
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.FindPetsByStatus(context.Background()).Status(status).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.FindPetsByStatus(context.Background()).Status(status).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.FindPetsByStatus``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -236,8 +236,8 @@ func main() {
     tags := []string{"Inner_example"} // []string | Tags to filter by
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.FindPetsByTags(context.Background()).Tags(tags).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.FindPetsByTags(context.Background()).Tags(tags).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.FindPetsByTags``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -302,8 +302,8 @@ func main() {
     petId := int64(789) // int64 | ID of pet to return
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.GetPetById(context.Background(), petId).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.GetPetById(context.Background(), petId).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.GetPetById``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -370,8 +370,8 @@ func main() {
     body := *openapiclient.NewPet("doggie", []string{"PhotoUrls_example"}) // Pet | Pet object that needs to be added to the store
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UpdatePet(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UpdatePet(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UpdatePet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -434,8 +434,8 @@ func main() {
     status := "status_example" // string | Updated status of the pet (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UpdatePetWithForm(context.Background(), petId).Name(name).Status(status).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UpdatePetWithForm(context.Background(), petId).Name(name).Status(status).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UpdatePetWithForm``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -504,8 +504,8 @@ func main() {
     file := os.NewFile(1234, "some_file") // *os.File | file to upload (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UploadFile(context.Background(), petId).AdditionalMetadata(additionalMetadata).File(file).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UploadFile(context.Background(), petId).AdditionalMetadata(additionalMetadata).File(file).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UploadFile``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -576,8 +576,8 @@ func main() {
     additionalMetadata := "additionalMetadata_example" // string | Additional data to pass to server (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UploadFileWithRequiredFile(context.Background(), petId).RequiredFile(requiredFile).AdditionalMetadata(additionalMetadata).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UploadFileWithRequiredFile(context.Background(), petId).RequiredFile(requiredFile).AdditionalMetadata(additionalMetadata).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UploadFileWithRequiredFile``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/client/petstore/go/go-petstore/docs/StoreApi.md b/samples/client/petstore/go/go-petstore/docs/StoreApi.md
index 1e5c0ae5ba8..243512eb723 100644
--- a/samples/client/petstore/go/go-petstore/docs/StoreApi.md
+++ b/samples/client/petstore/go/go-petstore/docs/StoreApi.md
@@ -35,8 +35,8 @@ func main() {
     orderId := "orderId_example" // string | ID of the order that needs to be deleted
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.DeleteOrder(context.Background(), orderId).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.DeleteOrder(context.Background(), orderId).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.DeleteOrder``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -102,8 +102,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.GetInventory(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.GetInventory(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.GetInventory``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -164,8 +164,8 @@ func main() {
     orderId := int64(789) // int64 | ID of pet that needs to be fetched
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.GetOrderById(context.Background(), orderId).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.GetOrderById(context.Background(), orderId).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.GetOrderById``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -232,8 +232,8 @@ func main() {
     body := *openapiclient.NewOrder() // Order | order placed for purchasing the pet
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.PlaceOrder(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.PlaceOrder(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.PlaceOrder``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/client/petstore/go/go-petstore/docs/UserApi.md b/samples/client/petstore/go/go-petstore/docs/UserApi.md
index e1623fabec4..5a5c8f52d2e 100644
--- a/samples/client/petstore/go/go-petstore/docs/UserApi.md
+++ b/samples/client/petstore/go/go-petstore/docs/UserApi.md
@@ -39,8 +39,8 @@ func main() {
     body := *openapiclient.NewUser() // User | Created user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.CreateUser(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.CreateUser(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.CreateUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -101,8 +101,8 @@ func main() {
     body := []openapiclient.User{*openapiclient.NewUser()} // []User | List of user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.CreateUsersWithArrayInput(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.CreateUsersWithArrayInput(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.CreateUsersWithArrayInput``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -163,8 +163,8 @@ func main() {
     body := []openapiclient.User{*openapiclient.NewUser()} // []User | List of user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.CreateUsersWithListInput(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.CreateUsersWithListInput(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.CreateUsersWithListInput``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -227,8 +227,8 @@ func main() {
     username := "username_example" // string | The name that needs to be deleted
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.DeleteUser(context.Background(), username).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.DeleteUser(context.Background(), username).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.DeleteUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -293,8 +293,8 @@ func main() {
     username := "username_example" // string | The name that needs to be fetched. Use user1 for testing.
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.GetUserByName(context.Background(), username).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.GetUserByName(context.Background(), username).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.GetUserByName``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -362,8 +362,8 @@ func main() {
     password := "password_example" // string | The password for login in clear text
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.LoginUser(context.Background()).Username(username).Password(password).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.LoginUser(context.Background()).Username(username).Password(password).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.LoginUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -426,8 +426,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.LogoutUser(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.LogoutUser(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.LogoutUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -487,8 +487,8 @@ func main() {
     body := *openapiclient.NewUser() // User | Updated user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.UpdateUser(context.Background(), username).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.UpdateUser(context.Background(), username).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.UpdateUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/client/petstore/go/go-petstore/go.mod b/samples/client/petstore/go/go-petstore/go.mod
index 0f43de9ebb2..ead32606c72 100644
--- a/samples/client/petstore/go/go-petstore/go.mod
+++ b/samples/client/petstore/go/go-petstore/go.mod
@@ -3,5 +3,5 @@ module github.com/GIT_USER_ID/GIT_REPO_ID
 go 1.13
 
 require (
-	golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99
+	golang.org/x/oauth2 v0.0.0-20210323180902-22b0adad7558
 )
diff --git a/samples/client/petstore/go/go-petstore/model_additional_properties_class.go b/samples/client/petstore/go/go-petstore/model_additional_properties_class.go
index 5b44d7e51ff..e5ec45291f2 100644
--- a/samples/client/petstore/go/go-petstore/model_additional_properties_class.go
+++ b/samples/client/petstore/go/go-petstore/model_additional_properties_class.go
@@ -24,9 +24,9 @@ type AdditionalPropertiesClass struct {
 	MapArrayAnytype *map[string][]map[string]interface{} `json:"map_array_anytype,omitempty"`
 	MapMapString *map[string]map[string]string `json:"map_map_string,omitempty"`
 	MapMapAnytype *map[string]map[string]map[string]interface{} `json:"map_map_anytype,omitempty"`
-	Anytype1 *map[string]interface{} `json:"anytype_1,omitempty"`
-	Anytype2 *map[string]interface{} `json:"anytype_2,omitempty"`
-	Anytype3 *map[string]interface{} `json:"anytype_3,omitempty"`
+	Anytype1 map[string]interface{} `json:"anytype_1,omitempty"`
+	Anytype2 map[string]interface{} `json:"anytype_2,omitempty"`
+	Anytype3 map[string]interface{} `json:"anytype_3,omitempty"`
 }
 
 // NewAdditionalPropertiesClass instantiates a new AdditionalPropertiesClass object
@@ -308,12 +308,12 @@ func (o *AdditionalPropertiesClass) GetAnytype1() map[string]interface{} {
 		var ret map[string]interface{}
 		return ret
 	}
-	return *o.Anytype1
+	return o.Anytype1
 }
 
 // GetAnytype1Ok returns a tuple with the Anytype1 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AdditionalPropertiesClass) GetAnytype1Ok() (*map[string]interface{}, bool) {
+func (o *AdditionalPropertiesClass) GetAnytype1Ok() (map[string]interface{}, bool) {
 	if o == nil || o.Anytype1 == nil {
 		return nil, false
 	}
@@ -331,7 +331,7 @@ func (o *AdditionalPropertiesClass) HasAnytype1() bool {
 
 // SetAnytype1 gets a reference to the given map[string]interface{} and assigns it to the Anytype1 field.
 func (o *AdditionalPropertiesClass) SetAnytype1(v map[string]interface{}) {
-	o.Anytype1 = &v
+	o.Anytype1 = v
 }
 
 // GetAnytype2 returns the Anytype2 field value if set, zero value otherwise.
@@ -340,12 +340,12 @@ func (o *AdditionalPropertiesClass) GetAnytype2() map[string]interface{} {
 		var ret map[string]interface{}
 		return ret
 	}
-	return *o.Anytype2
+	return o.Anytype2
 }
 
 // GetAnytype2Ok returns a tuple with the Anytype2 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AdditionalPropertiesClass) GetAnytype2Ok() (*map[string]interface{}, bool) {
+func (o *AdditionalPropertiesClass) GetAnytype2Ok() (map[string]interface{}, bool) {
 	if o == nil || o.Anytype2 == nil {
 		return nil, false
 	}
@@ -363,7 +363,7 @@ func (o *AdditionalPropertiesClass) HasAnytype2() bool {
 
 // SetAnytype2 gets a reference to the given map[string]interface{} and assigns it to the Anytype2 field.
 func (o *AdditionalPropertiesClass) SetAnytype2(v map[string]interface{}) {
-	o.Anytype2 = &v
+	o.Anytype2 = v
 }
 
 // GetAnytype3 returns the Anytype3 field value if set, zero value otherwise.
@@ -372,12 +372,12 @@ func (o *AdditionalPropertiesClass) GetAnytype3() map[string]interface{} {
 		var ret map[string]interface{}
 		return ret
 	}
-	return *o.Anytype3
+	return o.Anytype3
 }
 
 // GetAnytype3Ok returns a tuple with the Anytype3 field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *AdditionalPropertiesClass) GetAnytype3Ok() (*map[string]interface{}, bool) {
+func (o *AdditionalPropertiesClass) GetAnytype3Ok() (map[string]interface{}, bool) {
 	if o == nil || o.Anytype3 == nil {
 		return nil, false
 	}
@@ -395,7 +395,7 @@ func (o *AdditionalPropertiesClass) HasAnytype3() bool {
 
 // SetAnytype3 gets a reference to the given map[string]interface{} and assigns it to the Anytype3 field.
 func (o *AdditionalPropertiesClass) SetAnytype3(v map[string]interface{}) {
-	o.Anytype3 = &v
+	o.Anytype3 = v
 }
 
 func (o AdditionalPropertiesClass) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go b/samples/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go
index 29fbda5bfc8..fc8559be8b8 100644
--- a/samples/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go
+++ b/samples/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go
@@ -16,7 +16,7 @@ import (
 
 // ArrayOfArrayOfNumberOnly struct for ArrayOfArrayOfNumberOnly
 type ArrayOfArrayOfNumberOnly struct {
-	ArrayArrayNumber *[][]float32 `json:"ArrayArrayNumber,omitempty"`
+	ArrayArrayNumber [][]float32 `json:"ArrayArrayNumber,omitempty"`
 }
 
 // NewArrayOfArrayOfNumberOnly instantiates a new ArrayOfArrayOfNumberOnly object
@@ -42,12 +42,12 @@ func (o *ArrayOfArrayOfNumberOnly) GetArrayArrayNumber() [][]float32 {
 		var ret [][]float32
 		return ret
 	}
-	return *o.ArrayArrayNumber
+	return o.ArrayArrayNumber
 }
 
 // GetArrayArrayNumberOk returns a tuple with the ArrayArrayNumber field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayOfArrayOfNumberOnly) GetArrayArrayNumberOk() (*[][]float32, bool) {
+func (o *ArrayOfArrayOfNumberOnly) GetArrayArrayNumberOk() ([][]float32, bool) {
 	if o == nil || o.ArrayArrayNumber == nil {
 		return nil, false
 	}
@@ -65,7 +65,7 @@ func (o *ArrayOfArrayOfNumberOnly) HasArrayArrayNumber() bool {
 
 // SetArrayArrayNumber gets a reference to the given [][]float32 and assigns it to the ArrayArrayNumber field.
 func (o *ArrayOfArrayOfNumberOnly) SetArrayArrayNumber(v [][]float32) {
-	o.ArrayArrayNumber = &v
+	o.ArrayArrayNumber = v
 }
 
 func (o ArrayOfArrayOfNumberOnly) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go-petstore/model_array_of_number_only.go b/samples/client/petstore/go/go-petstore/model_array_of_number_only.go
index 1c6b5b2374b..d5265a97b3d 100644
--- a/samples/client/petstore/go/go-petstore/model_array_of_number_only.go
+++ b/samples/client/petstore/go/go-petstore/model_array_of_number_only.go
@@ -16,7 +16,7 @@ import (
 
 // ArrayOfNumberOnly struct for ArrayOfNumberOnly
 type ArrayOfNumberOnly struct {
-	ArrayNumber *[]float32 `json:"ArrayNumber,omitempty"`
+	ArrayNumber []float32 `json:"ArrayNumber,omitempty"`
 }
 
 // NewArrayOfNumberOnly instantiates a new ArrayOfNumberOnly object
@@ -42,12 +42,12 @@ func (o *ArrayOfNumberOnly) GetArrayNumber() []float32 {
 		var ret []float32
 		return ret
 	}
-	return *o.ArrayNumber
+	return o.ArrayNumber
 }
 
 // GetArrayNumberOk returns a tuple with the ArrayNumber field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayOfNumberOnly) GetArrayNumberOk() (*[]float32, bool) {
+func (o *ArrayOfNumberOnly) GetArrayNumberOk() ([]float32, bool) {
 	if o == nil || o.ArrayNumber == nil {
 		return nil, false
 	}
@@ -65,7 +65,7 @@ func (o *ArrayOfNumberOnly) HasArrayNumber() bool {
 
 // SetArrayNumber gets a reference to the given []float32 and assigns it to the ArrayNumber field.
 func (o *ArrayOfNumberOnly) SetArrayNumber(v []float32) {
-	o.ArrayNumber = &v
+	o.ArrayNumber = v
 }
 
 func (o ArrayOfNumberOnly) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go-petstore/model_array_test_.go b/samples/client/petstore/go/go-petstore/model_array_test_.go
index 54f72759d3f..b33b09a55db 100644
--- a/samples/client/petstore/go/go-petstore/model_array_test_.go
+++ b/samples/client/petstore/go/go-petstore/model_array_test_.go
@@ -16,9 +16,9 @@ import (
 
 // ArrayTest struct for ArrayTest
 type ArrayTest struct {
-	ArrayOfString *[]string `json:"array_of_string,omitempty"`
-	ArrayArrayOfInteger *[][]int64 `json:"array_array_of_integer,omitempty"`
-	ArrayArrayOfModel *[][]ReadOnlyFirst `json:"array_array_of_model,omitempty"`
+	ArrayOfString []string `json:"array_of_string,omitempty"`
+	ArrayArrayOfInteger [][]int64 `json:"array_array_of_integer,omitempty"`
+	ArrayArrayOfModel [][]ReadOnlyFirst `json:"array_array_of_model,omitempty"`
 }
 
 // NewArrayTest instantiates a new ArrayTest object
@@ -44,12 +44,12 @@ func (o *ArrayTest) GetArrayOfString() []string {
 		var ret []string
 		return ret
 	}
-	return *o.ArrayOfString
+	return o.ArrayOfString
 }
 
 // GetArrayOfStringOk returns a tuple with the ArrayOfString field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayTest) GetArrayOfStringOk() (*[]string, bool) {
+func (o *ArrayTest) GetArrayOfStringOk() ([]string, bool) {
 	if o == nil || o.ArrayOfString == nil {
 		return nil, false
 	}
@@ -67,7 +67,7 @@ func (o *ArrayTest) HasArrayOfString() bool {
 
 // SetArrayOfString gets a reference to the given []string and assigns it to the ArrayOfString field.
 func (o *ArrayTest) SetArrayOfString(v []string) {
-	o.ArrayOfString = &v
+	o.ArrayOfString = v
 }
 
 // GetArrayArrayOfInteger returns the ArrayArrayOfInteger field value if set, zero value otherwise.
@@ -76,12 +76,12 @@ func (o *ArrayTest) GetArrayArrayOfInteger() [][]int64 {
 		var ret [][]int64
 		return ret
 	}
-	return *o.ArrayArrayOfInteger
+	return o.ArrayArrayOfInteger
 }
 
 // GetArrayArrayOfIntegerOk returns a tuple with the ArrayArrayOfInteger field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayTest) GetArrayArrayOfIntegerOk() (*[][]int64, bool) {
+func (o *ArrayTest) GetArrayArrayOfIntegerOk() ([][]int64, bool) {
 	if o == nil || o.ArrayArrayOfInteger == nil {
 		return nil, false
 	}
@@ -99,7 +99,7 @@ func (o *ArrayTest) HasArrayArrayOfInteger() bool {
 
 // SetArrayArrayOfInteger gets a reference to the given [][]int64 and assigns it to the ArrayArrayOfInteger field.
 func (o *ArrayTest) SetArrayArrayOfInteger(v [][]int64) {
-	o.ArrayArrayOfInteger = &v
+	o.ArrayArrayOfInteger = v
 }
 
 // GetArrayArrayOfModel returns the ArrayArrayOfModel field value if set, zero value otherwise.
@@ -108,12 +108,12 @@ func (o *ArrayTest) GetArrayArrayOfModel() [][]ReadOnlyFirst {
 		var ret [][]ReadOnlyFirst
 		return ret
 	}
-	return *o.ArrayArrayOfModel
+	return o.ArrayArrayOfModel
 }
 
 // GetArrayArrayOfModelOk returns a tuple with the ArrayArrayOfModel field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayTest) GetArrayArrayOfModelOk() (*[][]ReadOnlyFirst, bool) {
+func (o *ArrayTest) GetArrayArrayOfModelOk() ([][]ReadOnlyFirst, bool) {
 	if o == nil || o.ArrayArrayOfModel == nil {
 		return nil, false
 	}
@@ -131,7 +131,7 @@ func (o *ArrayTest) HasArrayArrayOfModel() bool {
 
 // SetArrayArrayOfModel gets a reference to the given [][]ReadOnlyFirst and assigns it to the ArrayArrayOfModel field.
 func (o *ArrayTest) SetArrayArrayOfModel(v [][]ReadOnlyFirst) {
-	o.ArrayArrayOfModel = &v
+	o.ArrayArrayOfModel = v
 }
 
 func (o ArrayTest) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go-petstore/model_enum_arrays.go b/samples/client/petstore/go/go-petstore/model_enum_arrays.go
index ed2f6e8b145..19dc8bc8e98 100644
--- a/samples/client/petstore/go/go-petstore/model_enum_arrays.go
+++ b/samples/client/petstore/go/go-petstore/model_enum_arrays.go
@@ -17,7 +17,7 @@ import (
 // EnumArrays struct for EnumArrays
 type EnumArrays struct {
 	JustSymbol *string `json:"just_symbol,omitempty"`
-	ArrayEnum *[]string `json:"array_enum,omitempty"`
+	ArrayEnum []string `json:"array_enum,omitempty"`
 }
 
 // NewEnumArrays instantiates a new EnumArrays object
@@ -75,12 +75,12 @@ func (o *EnumArrays) GetArrayEnum() []string {
 		var ret []string
 		return ret
 	}
-	return *o.ArrayEnum
+	return o.ArrayEnum
 }
 
 // GetArrayEnumOk returns a tuple with the ArrayEnum field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *EnumArrays) GetArrayEnumOk() (*[]string, bool) {
+func (o *EnumArrays) GetArrayEnumOk() ([]string, bool) {
 	if o == nil || o.ArrayEnum == nil {
 		return nil, false
 	}
@@ -98,7 +98,7 @@ func (o *EnumArrays) HasArrayEnum() bool {
 
 // SetArrayEnum gets a reference to the given []string and assigns it to the ArrayEnum field.
 func (o *EnumArrays) SetArrayEnum(v []string) {
-	o.ArrayEnum = &v
+	o.ArrayEnum = v
 }
 
 func (o EnumArrays) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go-petstore/model_file_schema_test_class.go b/samples/client/petstore/go/go-petstore/model_file_schema_test_class.go
index 78fbc5aa2c2..52dcf0e1e9f 100644
--- a/samples/client/petstore/go/go-petstore/model_file_schema_test_class.go
+++ b/samples/client/petstore/go/go-petstore/model_file_schema_test_class.go
@@ -17,7 +17,7 @@ import (
 // FileSchemaTestClass struct for FileSchemaTestClass
 type FileSchemaTestClass struct {
 	File *File `json:"file,omitempty"`
-	Files *[]File `json:"files,omitempty"`
+	Files []File `json:"files,omitempty"`
 }
 
 // NewFileSchemaTestClass instantiates a new FileSchemaTestClass object
@@ -75,12 +75,12 @@ func (o *FileSchemaTestClass) GetFiles() []File {
 		var ret []File
 		return ret
 	}
-	return *o.Files
+	return o.Files
 }
 
 // GetFilesOk returns a tuple with the Files field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *FileSchemaTestClass) GetFilesOk() (*[]File, bool) {
+func (o *FileSchemaTestClass) GetFilesOk() ([]File, bool) {
 	if o == nil || o.Files == nil {
 		return nil, false
 	}
@@ -98,7 +98,7 @@ func (o *FileSchemaTestClass) HasFiles() bool {
 
 // SetFiles gets a reference to the given []File and assigns it to the Files field.
 func (o *FileSchemaTestClass) SetFiles(v []File) {
-	o.Files = &v
+	o.Files = v
 }
 
 func (o FileSchemaTestClass) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go-petstore/model_pet.go b/samples/client/petstore/go/go-petstore/model_pet.go
index 2d07615cb4f..538b9aa4d1f 100644
--- a/samples/client/petstore/go/go-petstore/model_pet.go
+++ b/samples/client/petstore/go/go-petstore/model_pet.go
@@ -20,7 +20,7 @@ type Pet struct {
 	Category *Category `json:"category,omitempty"`
 	Name string `json:"name"`
 	PhotoUrls []string `json:"photoUrls"`
-	Tags *[]Tag `json:"tags,omitempty"`
+	Tags []Tag `json:"tags,omitempty"`
 	// pet status in the store
 	Status *string `json:"status,omitempty"`
 }
@@ -144,11 +144,11 @@ func (o *Pet) GetPhotoUrls() []string {
 
 // GetPhotoUrlsOk returns a tuple with the PhotoUrls field value
 // and a boolean to check if the value has been set.
-func (o *Pet) GetPhotoUrlsOk() (*[]string, bool) {
+func (o *Pet) GetPhotoUrlsOk() ([]string, bool) {
 	if o == nil  {
 		return nil, false
 	}
-	return &o.PhotoUrls, true
+	return o.PhotoUrls, true
 }
 
 // SetPhotoUrls sets field value
@@ -162,12 +162,12 @@ func (o *Pet) GetTags() []Tag {
 		var ret []Tag
 		return ret
 	}
-	return *o.Tags
+	return o.Tags
 }
 
 // GetTagsOk returns a tuple with the Tags field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Pet) GetTagsOk() (*[]Tag, bool) {
+func (o *Pet) GetTagsOk() ([]Tag, bool) {
 	if o == nil || o.Tags == nil {
 		return nil, false
 	}
@@ -185,7 +185,7 @@ func (o *Pet) HasTags() bool {
 
 // SetTags gets a reference to the given []Tag and assigns it to the Tags field.
 func (o *Pet) SetTags(v []Tag) {
-	o.Tags = &v
+	o.Tags = v
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
diff --git a/samples/client/petstore/go/go-petstore/model_type_holder_default.go b/samples/client/petstore/go/go-petstore/model_type_holder_default.go
index 91d7c3014b6..34bef67ff01 100644
--- a/samples/client/petstore/go/go-petstore/model_type_holder_default.go
+++ b/samples/client/petstore/go/go-petstore/model_type_holder_default.go
@@ -157,11 +157,11 @@ func (o *TypeHolderDefault) GetArrayItem() []int32 {
 
 // GetArrayItemOk returns a tuple with the ArrayItem field value
 // and a boolean to check if the value has been set.
-func (o *TypeHolderDefault) GetArrayItemOk() (*[]int32, bool) {
+func (o *TypeHolderDefault) GetArrayItemOk() ([]int32, bool) {
 	if o == nil  {
 		return nil, false
 	}
-	return &o.ArrayItem, true
+	return o.ArrayItem, true
 }
 
 // SetArrayItem sets field value
diff --git a/samples/client/petstore/go/go-petstore/model_type_holder_example.go b/samples/client/petstore/go/go-petstore/model_type_holder_example.go
index 084c4d4c380..fd363cdb293 100644
--- a/samples/client/petstore/go/go-petstore/model_type_holder_example.go
+++ b/samples/client/petstore/go/go-petstore/model_type_holder_example.go
@@ -179,11 +179,11 @@ func (o *TypeHolderExample) GetArrayItem() []int32 {
 
 // GetArrayItemOk returns a tuple with the ArrayItem field value
 // and a boolean to check if the value has been set.
-func (o *TypeHolderExample) GetArrayItemOk() (*[]int32, bool) {
+func (o *TypeHolderExample) GetArrayItemOk() ([]int32, bool) {
 	if o == nil  {
 		return nil, false
 	}
-	return &o.ArrayItem, true
+	return o.ArrayItem, true
 }
 
 // SetArrayItem sets field value
diff --git a/samples/client/petstore/go/go-petstore/model_xml_item.go b/samples/client/petstore/go/go-petstore/model_xml_item.go
index 4d01502ae73..31a23e27309 100644
--- a/samples/client/petstore/go/go-petstore/model_xml_item.go
+++ b/samples/client/petstore/go/go-petstore/model_xml_item.go
@@ -20,31 +20,31 @@ type XmlItem struct {
 	AttributeNumber *float32 `json:"attribute_number,omitempty"`
 	AttributeInteger *int32 `json:"attribute_integer,omitempty"`
 	AttributeBoolean *bool `json:"attribute_boolean,omitempty"`
-	WrappedArray *[]int32 `json:"wrapped_array,omitempty"`
+	WrappedArray []int32 `json:"wrapped_array,omitempty"`
 	NameString *string `json:"name_string,omitempty"`
 	NameNumber *float32 `json:"name_number,omitempty"`
 	NameInteger *int32 `json:"name_integer,omitempty"`
 	NameBoolean *bool `json:"name_boolean,omitempty"`
-	NameArray *[]int32 `json:"name_array,omitempty"`
-	NameWrappedArray *[]int32 `json:"name_wrapped_array,omitempty"`
+	NameArray []int32 `json:"name_array,omitempty"`
+	NameWrappedArray []int32 `json:"name_wrapped_array,omitempty"`
 	PrefixString *string `json:"prefix_string,omitempty"`
 	PrefixNumber *float32 `json:"prefix_number,omitempty"`
 	PrefixInteger *int32 `json:"prefix_integer,omitempty"`
 	PrefixBoolean *bool `json:"prefix_boolean,omitempty"`
-	PrefixArray *[]int32 `json:"prefix_array,omitempty"`
-	PrefixWrappedArray *[]int32 `json:"prefix_wrapped_array,omitempty"`
+	PrefixArray []int32 `json:"prefix_array,omitempty"`
+	PrefixWrappedArray []int32 `json:"prefix_wrapped_array,omitempty"`
 	NamespaceString *string `json:"namespace_string,omitempty"`
 	NamespaceNumber *float32 `json:"namespace_number,omitempty"`
 	NamespaceInteger *int32 `json:"namespace_integer,omitempty"`
 	NamespaceBoolean *bool `json:"namespace_boolean,omitempty"`
-	NamespaceArray *[]int32 `json:"namespace_array,omitempty"`
-	NamespaceWrappedArray *[]int32 `json:"namespace_wrapped_array,omitempty"`
+	NamespaceArray []int32 `json:"namespace_array,omitempty"`
+	NamespaceWrappedArray []int32 `json:"namespace_wrapped_array,omitempty"`
 	PrefixNsString *string `json:"prefix_ns_string,omitempty"`
 	PrefixNsNumber *float32 `json:"prefix_ns_number,omitempty"`
 	PrefixNsInteger *int32 `json:"prefix_ns_integer,omitempty"`
 	PrefixNsBoolean *bool `json:"prefix_ns_boolean,omitempty"`
-	PrefixNsArray *[]int32 `json:"prefix_ns_array,omitempty"`
-	PrefixNsWrappedArray *[]int32 `json:"prefix_ns_wrapped_array,omitempty"`
+	PrefixNsArray []int32 `json:"prefix_ns_array,omitempty"`
+	PrefixNsWrappedArray []int32 `json:"prefix_ns_wrapped_array,omitempty"`
 }
 
 // NewXmlItem instantiates a new XmlItem object
@@ -198,12 +198,12 @@ func (o *XmlItem) GetWrappedArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.WrappedArray
+	return o.WrappedArray
 }
 
 // GetWrappedArrayOk returns a tuple with the WrappedArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetWrappedArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetWrappedArrayOk() ([]int32, bool) {
 	if o == nil || o.WrappedArray == nil {
 		return nil, false
 	}
@@ -221,7 +221,7 @@ func (o *XmlItem) HasWrappedArray() bool {
 
 // SetWrappedArray gets a reference to the given []int32 and assigns it to the WrappedArray field.
 func (o *XmlItem) SetWrappedArray(v []int32) {
-	o.WrappedArray = &v
+	o.WrappedArray = v
 }
 
 // GetNameString returns the NameString field value if set, zero value otherwise.
@@ -358,12 +358,12 @@ func (o *XmlItem) GetNameArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.NameArray
+	return o.NameArray
 }
 
 // GetNameArrayOk returns a tuple with the NameArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetNameArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetNameArrayOk() ([]int32, bool) {
 	if o == nil || o.NameArray == nil {
 		return nil, false
 	}
@@ -381,7 +381,7 @@ func (o *XmlItem) HasNameArray() bool {
 
 // SetNameArray gets a reference to the given []int32 and assigns it to the NameArray field.
 func (o *XmlItem) SetNameArray(v []int32) {
-	o.NameArray = &v
+	o.NameArray = v
 }
 
 // GetNameWrappedArray returns the NameWrappedArray field value if set, zero value otherwise.
@@ -390,12 +390,12 @@ func (o *XmlItem) GetNameWrappedArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.NameWrappedArray
+	return o.NameWrappedArray
 }
 
 // GetNameWrappedArrayOk returns a tuple with the NameWrappedArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetNameWrappedArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetNameWrappedArrayOk() ([]int32, bool) {
 	if o == nil || o.NameWrappedArray == nil {
 		return nil, false
 	}
@@ -413,7 +413,7 @@ func (o *XmlItem) HasNameWrappedArray() bool {
 
 // SetNameWrappedArray gets a reference to the given []int32 and assigns it to the NameWrappedArray field.
 func (o *XmlItem) SetNameWrappedArray(v []int32) {
-	o.NameWrappedArray = &v
+	o.NameWrappedArray = v
 }
 
 // GetPrefixString returns the PrefixString field value if set, zero value otherwise.
@@ -550,12 +550,12 @@ func (o *XmlItem) GetPrefixArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.PrefixArray
+	return o.PrefixArray
 }
 
 // GetPrefixArrayOk returns a tuple with the PrefixArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetPrefixArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetPrefixArrayOk() ([]int32, bool) {
 	if o == nil || o.PrefixArray == nil {
 		return nil, false
 	}
@@ -573,7 +573,7 @@ func (o *XmlItem) HasPrefixArray() bool {
 
 // SetPrefixArray gets a reference to the given []int32 and assigns it to the PrefixArray field.
 func (o *XmlItem) SetPrefixArray(v []int32) {
-	o.PrefixArray = &v
+	o.PrefixArray = v
 }
 
 // GetPrefixWrappedArray returns the PrefixWrappedArray field value if set, zero value otherwise.
@@ -582,12 +582,12 @@ func (o *XmlItem) GetPrefixWrappedArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.PrefixWrappedArray
+	return o.PrefixWrappedArray
 }
 
 // GetPrefixWrappedArrayOk returns a tuple with the PrefixWrappedArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetPrefixWrappedArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetPrefixWrappedArrayOk() ([]int32, bool) {
 	if o == nil || o.PrefixWrappedArray == nil {
 		return nil, false
 	}
@@ -605,7 +605,7 @@ func (o *XmlItem) HasPrefixWrappedArray() bool {
 
 // SetPrefixWrappedArray gets a reference to the given []int32 and assigns it to the PrefixWrappedArray field.
 func (o *XmlItem) SetPrefixWrappedArray(v []int32) {
-	o.PrefixWrappedArray = &v
+	o.PrefixWrappedArray = v
 }
 
 // GetNamespaceString returns the NamespaceString field value if set, zero value otherwise.
@@ -742,12 +742,12 @@ func (o *XmlItem) GetNamespaceArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.NamespaceArray
+	return o.NamespaceArray
 }
 
 // GetNamespaceArrayOk returns a tuple with the NamespaceArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetNamespaceArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetNamespaceArrayOk() ([]int32, bool) {
 	if o == nil || o.NamespaceArray == nil {
 		return nil, false
 	}
@@ -765,7 +765,7 @@ func (o *XmlItem) HasNamespaceArray() bool {
 
 // SetNamespaceArray gets a reference to the given []int32 and assigns it to the NamespaceArray field.
 func (o *XmlItem) SetNamespaceArray(v []int32) {
-	o.NamespaceArray = &v
+	o.NamespaceArray = v
 }
 
 // GetNamespaceWrappedArray returns the NamespaceWrappedArray field value if set, zero value otherwise.
@@ -774,12 +774,12 @@ func (o *XmlItem) GetNamespaceWrappedArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.NamespaceWrappedArray
+	return o.NamespaceWrappedArray
 }
 
 // GetNamespaceWrappedArrayOk returns a tuple with the NamespaceWrappedArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetNamespaceWrappedArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetNamespaceWrappedArrayOk() ([]int32, bool) {
 	if o == nil || o.NamespaceWrappedArray == nil {
 		return nil, false
 	}
@@ -797,7 +797,7 @@ func (o *XmlItem) HasNamespaceWrappedArray() bool {
 
 // SetNamespaceWrappedArray gets a reference to the given []int32 and assigns it to the NamespaceWrappedArray field.
 func (o *XmlItem) SetNamespaceWrappedArray(v []int32) {
-	o.NamespaceWrappedArray = &v
+	o.NamespaceWrappedArray = v
 }
 
 // GetPrefixNsString returns the PrefixNsString field value if set, zero value otherwise.
@@ -934,12 +934,12 @@ func (o *XmlItem) GetPrefixNsArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.PrefixNsArray
+	return o.PrefixNsArray
 }
 
 // GetPrefixNsArrayOk returns a tuple with the PrefixNsArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetPrefixNsArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetPrefixNsArrayOk() ([]int32, bool) {
 	if o == nil || o.PrefixNsArray == nil {
 		return nil, false
 	}
@@ -957,7 +957,7 @@ func (o *XmlItem) HasPrefixNsArray() bool {
 
 // SetPrefixNsArray gets a reference to the given []int32 and assigns it to the PrefixNsArray field.
 func (o *XmlItem) SetPrefixNsArray(v []int32) {
-	o.PrefixNsArray = &v
+	o.PrefixNsArray = v
 }
 
 // GetPrefixNsWrappedArray returns the PrefixNsWrappedArray field value if set, zero value otherwise.
@@ -966,12 +966,12 @@ func (o *XmlItem) GetPrefixNsWrappedArray() []int32 {
 		var ret []int32
 		return ret
 	}
-	return *o.PrefixNsWrappedArray
+	return o.PrefixNsWrappedArray
 }
 
 // GetPrefixNsWrappedArrayOk returns a tuple with the PrefixNsWrappedArray field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *XmlItem) GetPrefixNsWrappedArrayOk() (*[]int32, bool) {
+func (o *XmlItem) GetPrefixNsWrappedArrayOk() ([]int32, bool) {
 	if o == nil || o.PrefixNsWrappedArray == nil {
 		return nil, false
 	}
@@ -989,7 +989,7 @@ func (o *XmlItem) HasPrefixNsWrappedArray() bool {
 
 // SetPrefixNsWrappedArray gets a reference to the given []int32 and assigns it to the PrefixNsWrappedArray field.
 func (o *XmlItem) SetPrefixNsWrappedArray(v []int32) {
-	o.PrefixNsWrappedArray = &v
+	o.PrefixNsWrappedArray = v
 }
 
 func (o XmlItem) MarshalJSON() ([]byte, error) {
diff --git a/samples/client/petstore/go/go.mod b/samples/client/petstore/go/go.mod
new file mode 100644
index 00000000000..b8b87c5fe95
--- /dev/null
+++ b/samples/client/petstore/go/go.mod
@@ -0,0 +1,11 @@
+module github.com/OpenAPITools/openapi-generator/samples/client/petstore/go
+
+replace github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore => ./go-petstore
+
+go 1.13
+
+require (
+	github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore v0.0.0-00010101000000-000000000000
+	github.com/stretchr/testify v1.7.0
+	golang.org/x/oauth2 v0.0.0-20210323180902-22b0adad7558
+)
diff --git a/samples/client/petstore/go/go.sum b/samples/client/petstore/go/go.sum
new file mode 100644
index 00000000000..0df1d1a38a0
--- /dev/null
+++ b/samples/client/petstore/go/go.sum
@@ -0,0 +1,371 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
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+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
diff --git a/samples/client/petstore/go/mock/mock_api_pet.go b/samples/client/petstore/go/mock/mock_api_pet.go
index 84686bb5f2e..66a4f27adc0 100644
--- a/samples/client/petstore/go/mock/mock_api_pet.go
+++ b/samples/client/petstore/go/mock/mock_api_pet.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"net/http"
 
-	sw "../go-petstore"
+	sw "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore"
 )
 
 // MockPetApi is a mock of the PetApi interface
@@ -21,7 +21,7 @@ func (m *MockPetApi) AddPet(ctx context.Context) sw.ApiAddPetRequest {
 }
 
 func (m *MockPetApi) AddPetExecute(r sw.ApiAddPetRequest) (*http.Response, error) {
-	return &http.Response{StatusCode:200}, nil
+	return &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) DeletePet(ctx context.Context, petId int64) sw.ApiDeletePetRequest {
@@ -29,7 +29,7 @@ func (m *MockPetApi) DeletePet(ctx context.Context, petId int64) sw.ApiDeletePet
 }
 
 func (m *MockPetApi) DeletePetExecute(r sw.ApiDeletePetRequest) (*http.Response, error) {
-	return &http.Response{StatusCode:200}, nil
+	return &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) FindPetsByStatus(ctx context.Context) sw.ApiFindPetsByStatusRequest {
@@ -37,7 +37,7 @@ func (m *MockPetApi) FindPetsByStatus(ctx context.Context) sw.ApiFindPetsByStatu
 }
 
 func (m *MockPetApi) FindPetsByStatusExecute(r sw.ApiFindPetsByStatusRequest) ([]sw.Pet, *http.Response, error) {
-	return []sw.Pet{}, &http.Response{StatusCode:200}, nil
+	return []sw.Pet{}, &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) FindPetsByTags(ctx context.Context) sw.ApiFindPetsByTagsRequest {
@@ -45,15 +45,15 @@ func (m *MockPetApi) FindPetsByTags(ctx context.Context) sw.ApiFindPetsByTagsReq
 }
 
 func (m *MockPetApi) FindPetsByTagsExecute(r sw.ApiFindPetsByTagsRequest) ([]sw.Pet, *http.Response, error) {
-	return []sw.Pet{}, &http.Response{StatusCode:200}, nil
+	return []sw.Pet{}, &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) GetPetById(ctx context.Context, petId int64) sw.ApiGetPetByIdRequest {
 	return sw.ApiGetPetByIdRequest{ApiService: m}
 }
 
-func (m *MockPetApi) GetPetByIdExecute(r sw.ApiGetPetByIdRequest) (sw.Pet, *http.Response, error) {
-	return sw.Pet{}, &http.Response{StatusCode:200}, nil
+func (m *MockPetApi) GetPetByIdExecute(r sw.ApiGetPetByIdRequest) (*sw.Pet, *http.Response, error) {
+	return &sw.Pet{}, &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) UpdatePet(ctx context.Context) sw.ApiUpdatePetRequest {
@@ -61,7 +61,7 @@ func (m *MockPetApi) UpdatePet(ctx context.Context) sw.ApiUpdatePetRequest {
 }
 
 func (m *MockPetApi) UpdatePetExecute(r sw.ApiUpdatePetRequest) (*http.Response, error) {
-	return &http.Response{StatusCode:200}, nil
+	return &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) UpdatePetWithForm(ctx context.Context, petId int64) sw.ApiUpdatePetWithFormRequest {
@@ -69,21 +69,21 @@ func (m *MockPetApi) UpdatePetWithForm(ctx context.Context, petId int64) sw.ApiU
 }
 
 func (m *MockPetApi) UpdatePetWithFormExecute(r sw.ApiUpdatePetWithFormRequest) (*http.Response, error) {
-	return &http.Response{StatusCode:200}, nil
+	return &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) UploadFile(ctx context.Context, petId int64) sw.ApiUploadFileRequest {
 	return sw.ApiUploadFileRequest{ApiService: m}
 }
 
-func (m *MockPetApi) UploadFileExecute(r sw.ApiUploadFileRequest) (sw.ApiResponse, *http.Response, error) {
-	return sw.ApiResponse{}, &http.Response{StatusCode:200}, nil
+func (m *MockPetApi) UploadFileExecute(r sw.ApiUploadFileRequest) (*sw.ApiResponse, *http.Response, error) {
+	return &sw.ApiResponse{}, &http.Response{StatusCode: 200}, nil
 }
 
 func (m *MockPetApi) UploadFileWithRequiredFile(ctx context.Context, petId int64) sw.ApiUploadFileWithRequiredFileRequest {
 	return sw.ApiUploadFileWithRequiredFileRequest{ApiService: m}
 }
 
-func (m *MockPetApi) UploadFileWithRequiredFileExecute(r sw.ApiUploadFileWithRequiredFileRequest) (sw.ApiResponse, *http.Response, error) {
-	return sw.ApiResponse{}, &http.Response{StatusCode:200}, nil
+func (m *MockPetApi) UploadFileWithRequiredFileExecute(r sw.ApiUploadFileWithRequiredFileRequest) (*sw.ApiResponse, *http.Response, error) {
+	return &sw.ApiResponse{}, &http.Response{StatusCode: 200}, nil
 }
diff --git a/samples/client/petstore/go/pet_api_test.go b/samples/client/petstore/go/pet_api_test.go
index 0868c4b96cc..0a17cbed8f0 100644
--- a/samples/client/petstore/go/pet_api_test.go
+++ b/samples/client/petstore/go/pet_api_test.go
@@ -8,8 +8,8 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	sw "./go-petstore"
-	mock "./mock"
+	sw "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore"
+	mock "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/mock"
 )
 
 var client *sw.APIClient
@@ -30,7 +30,7 @@ func TestMain(m *testing.M) {
 func TestAddPet(t *testing.T) {
 	newPet := (sw.Pet{Id: sw.PtrInt64(12830), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Body(newPet).Execute()
 
@@ -69,7 +69,7 @@ func TestGetPetById(t *testing.T) {
 func TestGetPetByIdWithInvalidID(t *testing.T) {
 	resp, r, err := client.PetApi.GetPetById(context.Background(), 999999999).Execute()
 	if r != nil && r.StatusCode == 404 {
-		assertedError, ok := err.(sw.GenericOpenAPIError)
+		assertedError, ok := err.(*sw.GenericOpenAPIError)
 		a := assert.New(t)
 		a.True(ok)
 		a.Contains(string(assertedError.Body()), "type")
diff --git a/samples/client/petstore/go/store_api_test.go b/samples/client/petstore/go/store_api_test.go
index f9f55273eb9..94ca695c17b 100644
--- a/samples/client/petstore/go/store_api_test.go
+++ b/samples/client/petstore/go/store_api_test.go
@@ -6,7 +6,7 @@ import (
 	"testing"
 	"time"
 
-	sw "./go-petstore"
+	sw "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore"
 )
 
 func TestPlaceOrder(t *testing.T) {
diff --git a/samples/client/petstore/go/user_api_test.go b/samples/client/petstore/go/user_api_test.go
index 361e77ac9aa..52195d6caac 100644
--- a/samples/client/petstore/go/user_api_test.go
+++ b/samples/client/petstore/go/user_api_test.go
@@ -6,7 +6,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	sw "./go-petstore"
+	sw "github.com/OpenAPITools/openapi-generator/samples/client/petstore/go/go-petstore"
 )
 
 func TestCreateUser(t *testing.T) {
@@ -33,7 +33,7 @@ func TestCreateUser(t *testing.T) {
 //adding x to skip the test, currently it is failing
 func TestCreateUsersWithArrayInput(t *testing.T) {
 	newUsers := []sw.User{
-		sw.User{
+		{
 			Id:         sw.PtrInt64(1001),
 			FirstName:  sw.PtrString("gopher1"),
 			LastName:   sw.PtrString("lang1"),
@@ -43,7 +43,7 @@ func TestCreateUsersWithArrayInput(t *testing.T) {
 			Phone:      sw.PtrString("5101112222"),
 			UserStatus: sw.PtrInt32(1),
 		},
-		sw.User{
+		{
 			Id:         sw.PtrInt64(1002),
 			FirstName:  sw.PtrString("gopher2"),
 			LastName:   sw.PtrString("lang2"),
@@ -62,7 +62,7 @@ func TestCreateUsersWithArrayInput(t *testing.T) {
 	if apiResponse.StatusCode != 200 {
 		t.Log(apiResponse)
 	}
-/* issue deleting users due to issue in the server side (500). commented out below for the time being
+	/* issue deleting users due to issue in the server side (500). commented out below for the time being
 	//tear down
 	_, err1 := client.UserApi.DeleteUser(context.Background(), "gopher1").Execute()
 	if err1 != nil {
@@ -75,7 +75,7 @@ func TestCreateUsersWithArrayInput(t *testing.T) {
 		t.Errorf("Error while deleting user")
 		t.Log(err2)
 	}
-*/
+	*/
 }
 
 func TestGetUserByName(t *testing.T) {
diff --git a/samples/client/petstore/groovy/src/main/groovy/org/openapitools/api/PetApi.groovy b/samples/client/petstore/groovy/src/main/groovy/org/openapitools/api/PetApi.groovy
index d448cfd544e..73c3824c4a8 100644
--- a/samples/client/petstore/groovy/src/main/groovy/org/openapitools/api/PetApi.groovy
+++ b/samples/client/petstore/groovy/src/main/groovy/org/openapitools/api/PetApi.groovy
@@ -194,7 +194,7 @@ class PetApi {
 
     }
 
-    def uploadFile ( Long petId, String additionalMetadata, File file, Closure onSuccess, Closure onFailure)  {
+    def uploadFile ( Long petId, String additionalMetadata, File _file, Closure onSuccess, Closure onFailure)  {
         String resourcePath = "/pet/${petId}/uploadImage"
 
         // params
@@ -214,7 +214,7 @@ class PetApi {
         contentType = 'multipart/form-data';
         bodyParams = [:]
         bodyParams.put("additionalMetadata", additionalMetadata)
-        bodyParams.put("file", file)
+        bodyParams.put("file", _file)
 
         apiUtils.invokeApi(onSuccess, onFailure, basePath, versionPath, resourcePath, queryParams, headerParams, bodyParams, contentType,
                     "POST", "",
diff --git a/samples/client/petstore/java-micronaut-client/.openapi-generator/FILES b/samples/client/petstore/java-micronaut-client/.openapi-generator/FILES
index 049c3b6f038..d5036a847b5 100644
--- a/samples/client/petstore/java-micronaut-client/.openapi-generator/FILES
+++ b/samples/client/petstore/java-micronaut-client/.openapi-generator/FILES
@@ -4,59 +4,61 @@
 .mvn/wrapper/maven-wrapper.jar
 README.md
 build.gradle
-docs/AdditionalPropertiesAnyType.md
-docs/AdditionalPropertiesArray.md
-docs/AdditionalPropertiesBoolean.md
-docs/AdditionalPropertiesClass.md
-docs/AdditionalPropertiesInteger.md
-docs/AdditionalPropertiesNumber.md
-docs/AdditionalPropertiesObject.md
-docs/AdditionalPropertiesString.md
-docs/Animal.md
-docs/AnotherFakeApi.md
-docs/ArrayOfArrayOfNumberOnly.md
-docs/ArrayOfNumberOnly.md
-docs/ArrayTest.md
-docs/BigCat.md
-docs/BigCatAllOf.md
-docs/Capitalization.md
-docs/Cat.md
-docs/CatAllOf.md
-docs/Category.md
-docs/ClassModel.md
-docs/Dog.md
-docs/DogAllOf.md
-docs/EnumArrays.md
-docs/EnumClass.md
-docs/EnumTest.md
-docs/FakeApi.md
-docs/FakeClassnameTags123Api.md
-docs/FileSchemaTestClass.md
-docs/FormatTest.md
-docs/HasOnlyReadOnly.md
-docs/MapTest.md
-docs/MixedPropertiesAndAdditionalPropertiesClass.md
-docs/Model200Response.md
-docs/ModelApiResponse.md
-docs/ModelClient.md
-docs/ModelReturn.md
-docs/Name.md
-docs/NumberOnly.md
-docs/Order.md
-docs/OuterComposite.md
-docs/OuterEnum.md
-docs/Pet.md
-docs/PetApi.md
-docs/ReadOnlyFirst.md
-docs/SpecialModelName.md
-docs/StoreApi.md
-docs/Tag.md
-docs/TypeHolderDefault.md
-docs/TypeHolderExample.md
-docs/User.md
-docs/UserApi.md
-docs/XmlItem.md
-docs/auth.md
+docs/apis/AnotherFakeApi.md
+docs/apis/FakeApi.md
+docs/apis/FakeClassnameTags123Api.md
+docs/apis/PetApi.md
+docs/apis/StoreApi.md
+docs/apis/UserApi.md
+docs/apis/auth.md
+docs/models/AdditionalPropertiesAnyType.md
+docs/models/AdditionalPropertiesArray.md
+docs/models/AdditionalPropertiesBoolean.md
+docs/models/AdditionalPropertiesClass.md
+docs/models/AdditionalPropertiesInteger.md
+docs/models/AdditionalPropertiesNumber.md
+docs/models/AdditionalPropertiesObject.md
+docs/models/AdditionalPropertiesString.md
+docs/models/Animal.md
+docs/models/ArrayOfArrayOfNumberOnly.md
+docs/models/ArrayOfNumberOnly.md
+docs/models/ArrayTest.md
+docs/models/BigCat.md
+docs/models/BigCatAllOf.md
+docs/models/Capitalization.md
+docs/models/Cat.md
+docs/models/CatAllOf.md
+docs/models/Category.md
+docs/models/ClassModel.md
+docs/models/Dog.md
+docs/models/DogAllOf.md
+docs/models/EnumArrays.md
+docs/models/EnumClass.md
+docs/models/EnumTest.md
+docs/models/FileSchemaTestClass.md
+docs/models/FormatTest.md
+docs/models/HasOnlyReadOnly.md
+docs/models/MapTest.md
+docs/models/MixedPropertiesAndAdditionalPropertiesClass.md
+docs/models/Model200Response.md
+docs/models/ModelApiResponse.md
+docs/models/ModelClient.md
+docs/models/ModelFile.md
+docs/models/ModelList.md
+docs/models/ModelReturn.md
+docs/models/Name.md
+docs/models/NumberOnly.md
+docs/models/Order.md
+docs/models/OuterComposite.md
+docs/models/OuterEnum.md
+docs/models/Pet.md
+docs/models/ReadOnlyFirst.md
+docs/models/SpecialModelName.md
+docs/models/Tag.md
+docs/models/TypeHolderDefault.md
+docs/models/TypeHolderExample.md
+docs/models/User.md
+docs/models/XmlItem.md
 gradle.properties
 gradle/wrapper/gradle-wrapper.jar
 gradle/wrapper/gradle-wrapper.properties
@@ -104,6 +106,8 @@ src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
 src/main/java/org/openapitools/model/ModelClient.java
+src/main/java/org/openapitools/model/ModelFile.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
@@ -118,6 +122,5 @@ src/main/java/org/openapitools/model/TypeHolderDefault.java
 src/main/java/org/openapitools/model/TypeHolderExample.java
 src/main/java/org/openapitools/model/User.java
 src/main/java/org/openapitools/model/XmlItem.java
-src/main/java/org/openapitools/query/QueryParam.java
-src/main/java/org/openapitools/query/QueryParamBinder.java
 src/main/resources/application.yml
+src/main/resources/logback.xml
diff --git a/samples/client/petstore/java-micronaut-client/README.md b/samples/client/petstore/java-micronaut-client/README.md
index 9ed69e201d3..149073d437e 100644
--- a/samples/client/petstore/java-micronaut-client/README.md
+++ b/samples/client/petstore/java-micronaut-client/README.md
@@ -25,12 +25,12 @@ All the properties can be changed in the [application.yml][src/main/resources/ap
 
 Description on how to create Apis is given inside individual api guides:
 
-* [AnotherFakeApi](docs//AnotherFakeApi.md)
-* [FakeApi](docs//FakeApi.md)
-* [FakeClassnameTags123Api](docs//FakeClassnameTags123Api.md)
-* [PetApi](docs//PetApi.md)
-* [StoreApi](docs//StoreApi.md)
-* [UserApi](docs//UserApi.md)
+* [AnotherFakeApi](docs/apis/AnotherFakeApi.md)
+* [FakeApi](docs/apis/FakeApi.md)
+* [FakeClassnameTags123Api](docs/apis/FakeClassnameTags123Api.md)
+* [PetApi](docs/apis/PetApi.md)
+* [StoreApi](docs/apis/StoreApi.md)
+* [UserApi](docs/apis/UserApi.md)
 
 
 ## Auth methods
diff --git a/samples/client/petstore/java-micronaut-client/build.gradle b/samples/client/petstore/java-micronaut-client/build.gradle
index 856fe2d4349..c74021320cc 100644
--- a/samples/client/petstore/java-micronaut-client/build.gradle
+++ b/samples/client/petstore/java-micronaut-client/build.gradle
@@ -1,7 +1,7 @@
 plugins {
     id("groovy")
-    id("com.github.johnrengelman.shadow") version "7.0.0"
-    id("io.micronaut.application") version "2.0.3"
+    id("com.github.johnrengelman.shadow") version "7.1.1"
+    id("io.micronaut.application") version "3.1.1"
 }
 
 version = "1.0.0"
@@ -42,3 +42,5 @@ java {
     sourceCompatibility = JavaVersion.toVersion("1.8")
     targetCompatibility = JavaVersion.toVersion("1.8")
 }
+
+graalvmNative.toolchainDetection = false
diff --git a/samples/client/petstore/java-micronaut-client/docs/FileSchemaTestClass.md b/samples/client/petstore/java-micronaut-client/docs/FileSchemaTestClass.md
deleted file mode 100644
index c9ba66f887b..00000000000
--- a/samples/client/petstore/java-micronaut-client/docs/FileSchemaTestClass.md
+++ /dev/null
@@ -1,17 +0,0 @@
-
-
-# FileSchemaTestClass
-
-
-## Properties
-
-Name | Type | Description | Notes
------------- | ------------- | ------------- | -------------
-**file** | [`java.io.File`](java.io.File.md) |  |  [optional property]
-**files** | [`List&lt;java.io.File&gt;`](java.io.File.md) |  |  [optional property]
-
-
-
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AnotherFakeApi.md b/samples/client/petstore/java-micronaut-client/docs/apis/AnotherFakeApi.md
similarity index 100%
rename from samples/client/petstore/java-micronaut-client/docs/AnotherFakeApi.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/AnotherFakeApi.md
diff --git a/samples/client/petstore/java-micronaut-client/docs/FakeApi.md b/samples/client/petstore/java-micronaut-client/docs/apis/FakeApi.md
similarity index 99%
rename from samples/client/petstore/java-micronaut-client/docs/FakeApi.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/FakeApi.md
index 3b9f98a4ed7..14cf772369e 100644
--- a/samples/client/petstore/java-micronaut-client/docs/FakeApi.md
+++ b/samples/client/petstore/java-micronaut-client/docs/apis/FakeApi.md
@@ -95,7 +95,7 @@ Name | Type | Description  | Notes
 
 ### HTTP request headers
  - **Content-Type**: Not defined
- - **Accept**: `*/*`
+ - **Accept**: Not defined
 
 <a name="fakeOuterCompositeSerialize"></a>
 # **fakeOuterCompositeSerialize**
@@ -120,7 +120,7 @@ Name | Type | Description  | Notes
 
 ### HTTP request headers
  - **Content-Type**: Not defined
- - **Accept**: `*/*`
+ - **Accept**: Not defined
 
 <a name="fakeOuterNumberSerialize"></a>
 # **fakeOuterNumberSerialize**
@@ -145,7 +145,7 @@ Name | Type | Description  | Notes
 
 ### HTTP request headers
  - **Content-Type**: Not defined
- - **Accept**: `*/*`
+ - **Accept**: Not defined
 
 <a name="fakeOuterStringSerialize"></a>
 # **fakeOuterStringSerialize**
@@ -170,7 +170,7 @@ Name | Type | Description  | Notes
 
 ### HTTP request headers
  - **Content-Type**: Not defined
- - **Accept**: `*/*`
+ - **Accept**: Not defined
 
 <a name="testBodyWithFileSchema"></a>
 # **testBodyWithFileSchema**
diff --git a/samples/client/petstore/java-micronaut-client/docs/FakeClassnameTags123Api.md b/samples/client/petstore/java-micronaut-client/docs/apis/FakeClassnameTags123Api.md
similarity index 100%
rename from samples/client/petstore/java-micronaut-client/docs/FakeClassnameTags123Api.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/FakeClassnameTags123Api.md
diff --git a/samples/client/petstore/java-micronaut-client/docs/PetApi.md b/samples/client/petstore/java-micronaut-client/docs/apis/PetApi.md
similarity index 99%
rename from samples/client/petstore/java-micronaut-client/docs/PetApi.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/PetApi.md
index 44f7e649a26..abbb6b6152f 100644
--- a/samples/client/petstore/java-micronaut-client/docs/PetApi.md
+++ b/samples/client/petstore/java-micronaut-client/docs/apis/PetApi.md
@@ -219,7 +219,7 @@ Name | Type | Description  | Notes
 <a name="uploadFile"></a>
 # **uploadFile**
 ```java
-Mono<ModelApiResponse> PetApi.uploadFile(petIdadditionalMetadatafile)
+Mono<ModelApiResponse> PetApi.uploadFile(petIdadditionalMetadata_file)
 ```
 
 uploads an image
@@ -229,7 +229,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | `Long`| ID of pet to update |
  **additionalMetadata** | `String`| Additional data to pass to server | [optional parameter]
- **file** | `File`| file to upload | [optional parameter]
+ **_file** | `File`| file to upload | [optional parameter]
 
 
 ### Return type
diff --git a/samples/client/petstore/java-micronaut-client/docs/StoreApi.md b/samples/client/petstore/java-micronaut-client/docs/apis/StoreApi.md
similarity index 100%
rename from samples/client/petstore/java-micronaut-client/docs/StoreApi.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/StoreApi.md
diff --git a/samples/client/petstore/java-micronaut-client/docs/UserApi.md b/samples/client/petstore/java-micronaut-client/docs/apis/UserApi.md
similarity index 100%
rename from samples/client/petstore/java-micronaut-client/docs/UserApi.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/UserApi.md
diff --git a/samples/client/petstore/java-micronaut-client/docs/auth.md b/samples/client/petstore/java-micronaut-client/docs/apis/auth.md
similarity index 100%
rename from samples/client/petstore/java-micronaut-client/docs/auth.md
rename to samples/client/petstore/java-micronaut-client/docs/apis/auth.md
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesAnyType.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesAnyType.md
similarity index 57%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesAnyType.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesAnyType.md
index fddcd9d8e0f..d57b2721031 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesAnyType.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesAnyType.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesAnyType
 
+The class is defined in **[AdditionalPropertiesAnyType.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesArray.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesArray.md
similarity index 58%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesArray.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesArray.md
index c52113f687b..8eb24fe8262 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesArray.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesArray.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesArray
 
+The class is defined in **[AdditionalPropertiesArray.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesArray.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesBoolean.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesBoolean.md
similarity index 57%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesBoolean.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesBoolean.md
index 9d626b44668..6fcfa2a50f6 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesBoolean.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesBoolean.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesBoolean
 
+The class is defined in **[AdditionalPropertiesBoolean.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesClass.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesClass.md
similarity index 86%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesClass.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesClass.md
index 84f88e3fdba..4e452d010db 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesClass.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesClass.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesClass
 
+The class is defined in **[AdditionalPropertiesClass.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesClass.java)**
 
 ## Properties
 
@@ -24,3 +25,10 @@ Name | Type | Description | Notes
 
 
 
+
+
+
+
+
+
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesInteger.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesInteger.md
similarity index 57%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesInteger.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesInteger.md
index b17edb55655..3f8aee1c875 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesInteger.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesInteger.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesInteger
 
+The class is defined in **[AdditionalPropertiesInteger.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesNumber.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesNumber.md
similarity index 58%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesNumber.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesNumber.md
index bd33c906eeb..1e8f61b42a4 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesNumber.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesNumber.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesNumber
 
+The class is defined in **[AdditionalPropertiesNumber.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesObject.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesObject.md
similarity index 58%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesObject.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesObject.md
index a77d38c7b19..a839641e6e8 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesObject.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesObject.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesObject
 
+The class is defined in **[AdditionalPropertiesObject.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesObject.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesString.md b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesString.md
similarity index 58%
rename from samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesString.md
rename to samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesString.md
index 6f1ccd0910d..1452d77056c 100644
--- a/samples/client/petstore/java-micronaut-client/docs/AdditionalPropertiesString.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/AdditionalPropertiesString.md
@@ -2,6 +2,7 @@
 
 # AdditionalPropertiesString
 
+The class is defined in **[AdditionalPropertiesString.java](../../src/main/java/org/openapitools/model/AdditionalPropertiesString.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Animal.md b/samples/client/petstore/java-micronaut-client/docs/models/Animal.md
similarity index 67%
rename from samples/client/petstore/java-micronaut-client/docs/Animal.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Animal.md
index 4d92e8e7e29..226b3933ac0 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Animal.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Animal.md
@@ -2,6 +2,7 @@
 
 # Animal
 
+The class is defined in **[Animal.java](../../src/main/java/org/openapitools/model/Animal.java)**
 
 ## Properties
 
@@ -13,5 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ArrayOfArrayOfNumberOnly.md b/samples/client/petstore/java-micronaut-client/docs/models/ArrayOfArrayOfNumberOnly.md
similarity index 63%
rename from samples/client/petstore/java-micronaut-client/docs/ArrayOfArrayOfNumberOnly.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ArrayOfArrayOfNumberOnly.md
index 65f6fb827f1..3cf3adab1ce 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ArrayOfArrayOfNumberOnly.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ArrayOfArrayOfNumberOnly.md
@@ -2,6 +2,7 @@
 
 # ArrayOfArrayOfNumberOnly
 
+The class is defined in **[ArrayOfArrayOfNumberOnly.java](../../src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ArrayOfNumberOnly.md b/samples/client/petstore/java-micronaut-client/docs/models/ArrayOfNumberOnly.md
similarity index 63%
rename from samples/client/petstore/java-micronaut-client/docs/ArrayOfNumberOnly.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ArrayOfNumberOnly.md
index 2909608f6e8..fe09bde39c3 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ArrayOfNumberOnly.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ArrayOfNumberOnly.md
@@ -2,6 +2,7 @@
 
 # ArrayOfNumberOnly
 
+The class is defined in **[ArrayOfNumberOnly.java](../../src/main/java/org/openapitools/model/ArrayOfNumberOnly.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ArrayTest.md b/samples/client/petstore/java-micronaut-client/docs/models/ArrayTest.md
similarity index 78%
rename from samples/client/petstore/java-micronaut-client/docs/ArrayTest.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ArrayTest.md
index ee3f7633b28..3f3ec33c736 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ArrayTest.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ArrayTest.md
@@ -2,6 +2,7 @@
 
 # ArrayTest
 
+The class is defined in **[ArrayTest.java](../../src/main/java/org/openapitools/model/ArrayTest.java)**
 
 ## Properties
 
@@ -15,4 +16,3 @@ Name | Type | Description | Notes
 
 
 
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/BigCat.md b/samples/client/petstore/java-micronaut-client/docs/models/BigCat.md
similarity index 52%
rename from samples/client/petstore/java-micronaut-client/docs/BigCat.md
rename to samples/client/petstore/java-micronaut-client/docs/models/BigCat.md
index e368f81567f..2bc6032da82 100644
--- a/samples/client/petstore/java-micronaut-client/docs/BigCat.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/BigCat.md
@@ -2,6 +2,7 @@
 
 # BigCat
 
+The class is defined in **[BigCat.java](../../src/main/java/org/openapitools/model/BigCat.java)**
 
 ## Properties
 
@@ -9,18 +10,13 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **kind** | [**KindEnum**](#KindEnum) |  |  [optional property]
 
-
-
-## Enum: KindEnum
+## KindEnum
 
 Name | Value
 ---- | -----
-LIONS | `&quot;lions&quot;`
-TIGERS | `&quot;tigers&quot;`
-LEOPARDS | `&quot;leopards&quot;`
-JAGUARS | `&quot;jaguars&quot;`
-
-
-
+LIONS | `"lions"`
+TIGERS | `"tigers"`
+LEOPARDS | `"leopards"`
+JAGUARS | `"jaguars"`
 
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/BigCatAllOf.md b/samples/client/petstore/java-micronaut-client/docs/models/BigCatAllOf.md
similarity index 52%
rename from samples/client/petstore/java-micronaut-client/docs/BigCatAllOf.md
rename to samples/client/petstore/java-micronaut-client/docs/models/BigCatAllOf.md
index 869236ae81d..6e72649489a 100644
--- a/samples/client/petstore/java-micronaut-client/docs/BigCatAllOf.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/BigCatAllOf.md
@@ -2,6 +2,7 @@
 
 # BigCatAllOf
 
+The class is defined in **[BigCatAllOf.java](../../src/main/java/org/openapitools/model/BigCatAllOf.java)**
 
 ## Properties
 
@@ -9,18 +10,13 @@ Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **kind** | [**KindEnum**](#KindEnum) |  |  [optional property]
 
-
-
-## Enum: KindEnum
+## KindEnum
 
 Name | Value
 ---- | -----
-LIONS | `&quot;lions&quot;`
-TIGERS | `&quot;tigers&quot;`
-LEOPARDS | `&quot;leopards&quot;`
-JAGUARS | `&quot;jaguars&quot;`
-
-
-
+LIONS | `"lions"`
+TIGERS | `"tigers"`
+LEOPARDS | `"leopards"`
+JAGUARS | `"jaguars"`
 
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/Capitalization.md b/samples/client/petstore/java-micronaut-client/docs/models/Capitalization.md
similarity index 80%
rename from samples/client/petstore/java-micronaut-client/docs/Capitalization.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Capitalization.md
index fb5232d52de..c3578bff00e 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Capitalization.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Capitalization.md
@@ -2,6 +2,7 @@
 
 # Capitalization
 
+The class is defined in **[Capitalization.java](../../src/main/java/org/openapitools/model/Capitalization.java)**
 
 ## Properties
 
@@ -19,3 +20,5 @@ Name | Type | Description | Notes
 
 
 
+
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/Cat.md b/samples/client/petstore/java-micronaut-client/docs/models/Cat.md
similarity index 65%
rename from samples/client/petstore/java-micronaut-client/docs/Cat.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Cat.md
index 4a7e1503b1e..44b1d8fd3ed 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Cat.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Cat.md
@@ -2,6 +2,7 @@
 
 # Cat
 
+The class is defined in **[Cat.java](../../src/main/java/org/openapitools/model/Cat.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/CatAllOf.md b/samples/client/petstore/java-micronaut-client/docs/models/CatAllOf.md
similarity index 63%
rename from samples/client/petstore/java-micronaut-client/docs/CatAllOf.md
rename to samples/client/petstore/java-micronaut-client/docs/models/CatAllOf.md
index 41f0898e7c0..e93b6a351fd 100644
--- a/samples/client/petstore/java-micronaut-client/docs/CatAllOf.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/CatAllOf.md
@@ -2,6 +2,7 @@
 
 # CatAllOf
 
+The class is defined in **[CatAllOf.java](../../src/main/java/org/openapitools/model/CatAllOf.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Category.md b/samples/client/petstore/java-micronaut-client/docs/models/Category.md
similarity index 65%
rename from samples/client/petstore/java-micronaut-client/docs/Category.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Category.md
index 497a0ce8d45..cab979e1c3d 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Category.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Category.md
@@ -2,6 +2,7 @@
 
 # Category
 
+The class is defined in **[Category.java](../../src/main/java/org/openapitools/model/Category.java)**
 
 ## Properties
 
@@ -13,5 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ClassModel.md b/samples/client/petstore/java-micronaut-client/docs/models/ClassModel.md
similarity index 68%
rename from samples/client/petstore/java-micronaut-client/docs/ClassModel.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ClassModel.md
index e428f3bc207..c3565b7c929 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ClassModel.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ClassModel.md
@@ -4,6 +4,8 @@
 
 Model for testing model with \"_class\" property
 
+The class is defined in **[ClassModel.java](../../src/main/java/org/openapitools/model/ClassModel.java)**
+
 ## Properties
 
 Name | Type | Description | Notes
@@ -12,6 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Dog.md b/samples/client/petstore/java-micronaut-client/docs/models/Dog.md
similarity index 64%
rename from samples/client/petstore/java-micronaut-client/docs/Dog.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Dog.md
index db403946fcd..552e7373757 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Dog.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Dog.md
@@ -2,6 +2,7 @@
 
 # Dog
 
+The class is defined in **[Dog.java](../../src/main/java/org/openapitools/model/Dog.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/DogAllOf.md b/samples/client/petstore/java-micronaut-client/docs/models/DogAllOf.md
similarity index 63%
rename from samples/client/petstore/java-micronaut-client/docs/DogAllOf.md
rename to samples/client/petstore/java-micronaut-client/docs/models/DogAllOf.md
index e89dd640696..6e25529833b 100644
--- a/samples/client/petstore/java-micronaut-client/docs/DogAllOf.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/DogAllOf.md
@@ -2,6 +2,7 @@
 
 # DogAllOf
 
+The class is defined in **[DogAllOf.java](../../src/main/java/org/openapitools/model/DogAllOf.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/EnumArrays.md b/samples/client/petstore/java-micronaut-client/docs/models/EnumArrays.md
similarity index 61%
rename from samples/client/petstore/java-micronaut-client/docs/EnumArrays.md
rename to samples/client/petstore/java-micronaut-client/docs/models/EnumArrays.md
index f905c2dab35..421d6479b0e 100644
--- a/samples/client/petstore/java-micronaut-client/docs/EnumArrays.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/EnumArrays.md
@@ -2,6 +2,7 @@
 
 # EnumArrays
 
+The class is defined in **[EnumArrays.java](../../src/main/java/org/openapitools/model/EnumArrays.java)**
 
 ## Properties
 
@@ -10,24 +11,18 @@ Name | Type | Description | Notes
 **justSymbol** | [**JustSymbolEnum**](#JustSymbolEnum) |  |  [optional property]
 **arrayEnum** | [**List&lt;ArrayEnumEnum&gt;**](#List&lt;ArrayEnumEnum&gt;) |  |  [optional property]
 
-
-
-## Enum: JustSymbolEnum
+## JustSymbolEnum
 
 Name | Value
 ---- | -----
-GREATER_THAN_OR_EQUAL_TO | `&quot;&gt;&#x3D;&quot;`
-DOLLAR | `&quot;$&quot;`
+GREATER_THAN_OR_EQUAL_TO | `">="`
+DOLLAR | `"$"`
 
-
-## Enum: List&lt;ArrayEnumEnum&gt;
+## List&lt;ArrayEnumEnum&gt;
 
 Name | Value
 ---- | -----
-FISH | `&quot;fish&quot;`
-CRAB | `&quot;crab&quot;`
-
-
-
+FISH | `"fish"`
+CRAB | `"crab"`
 
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/EnumClass.md b/samples/client/petstore/java-micronaut-client/docs/models/EnumClass.md
similarity index 51%
rename from samples/client/petstore/java-micronaut-client/docs/EnumClass.md
rename to samples/client/petstore/java-micronaut-client/docs/models/EnumClass.md
index b314590a759..e09084e283d 100644
--- a/samples/client/petstore/java-micronaut-client/docs/EnumClass.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/EnumClass.md
@@ -4,6 +4,8 @@
 
 ## Enum
 
+The class is defined in **[EnumClass.java](../../src/main/java/org/openapitools/model/EnumClass.java)**
+
 
 * `_ABC` (value: `"_abc"`)
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/EnumTest.md b/samples/client/petstore/java-micronaut-client/docs/models/EnumTest.md
similarity index 71%
rename from samples/client/petstore/java-micronaut-client/docs/EnumTest.md
rename to samples/client/petstore/java-micronaut-client/docs/models/EnumTest.md
index d2a2431223e..d183eb4d5fe 100644
--- a/samples/client/petstore/java-micronaut-client/docs/EnumTest.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/EnumTest.md
@@ -2,6 +2,7 @@
 
 # EnumTest
 
+The class is defined in **[EnumTest.java](../../src/main/java/org/openapitools/model/EnumTest.java)**
 
 ## Properties
 
@@ -13,35 +14,30 @@ Name | Type | Description | Notes
 **enumNumber** | [**EnumNumberEnum**](#EnumNumberEnum) |  |  [optional property]
 **outerEnum** | `OuterEnum` |  |  [optional property]
 
-
-
-## Enum: EnumStringEnum
+## EnumStringEnum
 
 Name | Value
 ---- | -----
-UPPER | `&quot;UPPER&quot;`
-LOWER | `&quot;lower&quot;`
-EMPTY | `&quot;&quot;`
+UPPER | `"UPPER"`
+LOWER | `"lower"`
+EMPTY | `""`
 
-
-## Enum: EnumStringRequiredEnum
+## EnumStringRequiredEnum
 
 Name | Value
 ---- | -----
-UPPER | `&quot;UPPER&quot;`
-LOWER | `&quot;lower&quot;`
-EMPTY | `&quot;&quot;`
+UPPER | `"UPPER"`
+LOWER | `"lower"`
+EMPTY | `""`
 
-
-## Enum: EnumIntegerEnum
+## EnumIntegerEnum
 
 Name | Value
 ---- | -----
 NUMBER_1 | `1`
 NUMBER_MINUS_1 | `-1`
 
-
-## Enum: EnumNumberEnum
+## EnumNumberEnum
 
 Name | Value
 ---- | -----
@@ -50,5 +46,3 @@ NUMBER_MINUS_1_DOT_2 | `-1.2`
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/models/FileSchemaTestClass.md b/samples/client/petstore/java-micronaut-client/docs/models/FileSchemaTestClass.md
new file mode 100644
index 00000000000..0214efd3098
--- /dev/null
+++ b/samples/client/petstore/java-micronaut-client/docs/models/FileSchemaTestClass.md
@@ -0,0 +1,16 @@
+
+
+# FileSchemaTestClass
+
+The class is defined in **[FileSchemaTestClass.java](../../src/main/java/org/openapitools/model/FileSchemaTestClass.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**_file** | [`ModelFile`](ModelFile.md) |  |  [optional property]
+**files** | [`List&lt;ModelFile&gt;`](ModelFile.md) |  |  [optional property]
+
+
+
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/FormatTest.md b/samples/client/petstore/java-micronaut-client/docs/models/FormatTest.md
similarity index 86%
rename from samples/client/petstore/java-micronaut-client/docs/FormatTest.md
rename to samples/client/petstore/java-micronaut-client/docs/models/FormatTest.md
index 74c29bb97b2..d7299aaa90e 100644
--- a/samples/client/petstore/java-micronaut-client/docs/FormatTest.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/FormatTest.md
@@ -2,6 +2,7 @@
 
 # FormatTest
 
+The class is defined in **[FormatTest.java](../../src/main/java/org/openapitools/model/FormatTest.java)**
 
 ## Properties
 
@@ -27,3 +28,13 @@ Name | Type | Description | Notes
 
 
 
+
+
+
+
+
+
+
+
+
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/HasOnlyReadOnly.md b/samples/client/petstore/java-micronaut-client/docs/models/HasOnlyReadOnly.md
similarity index 69%
rename from samples/client/petstore/java-micronaut-client/docs/HasOnlyReadOnly.md
rename to samples/client/petstore/java-micronaut-client/docs/models/HasOnlyReadOnly.md
index c53bce80f62..fab72494cfa 100644
--- a/samples/client/petstore/java-micronaut-client/docs/HasOnlyReadOnly.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/HasOnlyReadOnly.md
@@ -2,6 +2,7 @@
 
 # HasOnlyReadOnly
 
+The class is defined in **[HasOnlyReadOnly.java](../../src/main/java/org/openapitools/model/HasOnlyReadOnly.java)**
 
 ## Properties
 
@@ -13,5 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/MapTest.md b/samples/client/petstore/java-micronaut-client/docs/models/MapTest.md
similarity index 75%
rename from samples/client/petstore/java-micronaut-client/docs/MapTest.md
rename to samples/client/petstore/java-micronaut-client/docs/models/MapTest.md
index 8b868a1ae7e..f5f96393f11 100644
--- a/samples/client/petstore/java-micronaut-client/docs/MapTest.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/MapTest.md
@@ -2,6 +2,7 @@
 
 # MapTest
 
+The class is defined in **[MapTest.java](../../src/main/java/org/openapitools/model/MapTest.java)**
 
 ## Properties
 
@@ -13,14 +14,12 @@ Name | Type | Description | Notes
 **indirectMap** | `Map&lt;String, Boolean&gt;` |  |  [optional property]
 
 
-
-## Enum: Map&lt;String, InnerEnum&gt;
+## Map&lt;String, InnerEnum&gt;
 
 Name | Value
 ---- | -----
-UPPER | `&quot;UPPER&quot;`
-LOWER | `&quot;lower&quot;`
-
+UPPER | `"UPPER"`
+LOWER | `"lower"`
 
 
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/client/petstore/java-micronaut-client/docs/models/MixedPropertiesAndAdditionalPropertiesClass.md
similarity index 66%
rename from samples/client/petstore/java-micronaut-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md
rename to samples/client/petstore/java-micronaut-client/docs/models/MixedPropertiesAndAdditionalPropertiesClass.md
index 40f3a82effd..b7c29269f10 100644
--- a/samples/client/petstore/java-micronaut-client/docs/MixedPropertiesAndAdditionalPropertiesClass.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -2,6 +2,7 @@
 
 # MixedPropertiesAndAdditionalPropertiesClass
 
+The class is defined in **[MixedPropertiesAndAdditionalPropertiesClass.java](../../src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java)**
 
 ## Properties
 
@@ -15,4 +16,3 @@ Name | Type | Description | Notes
 
 
 
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Model200Response.md b/samples/client/petstore/java-micronaut-client/docs/models/Model200Response.md
similarity index 71%
rename from samples/client/petstore/java-micronaut-client/docs/Model200Response.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Model200Response.md
index bc8078d0bed..7f403913bbf 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Model200Response.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Model200Response.md
@@ -4,6 +4,8 @@
 
 Model for testing model name starting with number
 
+The class is defined in **[Model200Response.java](../../src/main/java/org/openapitools/model/Model200Response.java)**
+
 ## Properties
 
 Name | Type | Description | Notes
@@ -14,5 +16,3 @@ Name | Type | Description | Notes
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ModelApiResponse.md b/samples/client/petstore/java-micronaut-client/docs/models/ModelApiResponse.md
similarity index 70%
rename from samples/client/petstore/java-micronaut-client/docs/ModelApiResponse.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ModelApiResponse.md
index 950119dc1f1..2d8154e28e5 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ModelApiResponse.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ModelApiResponse.md
@@ -2,6 +2,7 @@
 
 # ModelApiResponse
 
+The class is defined in **[ModelApiResponse.java](../../src/main/java/org/openapitools/model/ModelApiResponse.java)**
 
 ## Properties
 
@@ -15,4 +16,3 @@ Name | Type | Description | Notes
 
 
 
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ModelClient.md b/samples/client/petstore/java-micronaut-client/docs/models/ModelClient.md
similarity index 62%
rename from samples/client/petstore/java-micronaut-client/docs/ModelClient.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ModelClient.md
index 74770bad073..3bfcef3bb18 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ModelClient.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ModelClient.md
@@ -2,6 +2,7 @@
 
 # ModelClient
 
+The class is defined in **[ModelClient.java](../../src/main/java/org/openapitools/model/ModelClient.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ModelFile.md b/samples/client/petstore/java-micronaut-client/docs/models/ModelFile.md
similarity index 68%
rename from samples/client/petstore/java-micronaut-client/docs/ModelFile.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ModelFile.md
index 014716aba6a..53228b7d77d 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ModelFile.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ModelFile.md
@@ -4,6 +4,8 @@
 
 Must be named `File` for test.
 
+The class is defined in **[ModelFile.java](../../src/main/java/org/openapitools/model/ModelFile.java)**
+
 ## Properties
 
 Name | Type | Description | Notes
@@ -12,6 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ModelList.md b/samples/client/petstore/java-micronaut-client/docs/models/ModelList.md
similarity index 63%
rename from samples/client/petstore/java-micronaut-client/docs/ModelList.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ModelList.md
index 6468645316c..badcf08bd2c 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ModelList.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ModelList.md
@@ -2,6 +2,7 @@
 
 # ModelList
 
+The class is defined in **[ModelList.java](../../src/main/java/org/openapitools/model/ModelList.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/ModelReturn.md b/samples/client/petstore/java-micronaut-client/docs/models/ModelReturn.md
similarity index 66%
rename from samples/client/petstore/java-micronaut-client/docs/ModelReturn.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ModelReturn.md
index f907f3a956b..48712674adb 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ModelReturn.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ModelReturn.md
@@ -4,6 +4,8 @@
 
 Model for testing reserved words
 
+The class is defined in **[ModelReturn.java](../../src/main/java/org/openapitools/model/ModelReturn.java)**
+
 ## Properties
 
 Name | Type | Description | Notes
@@ -12,6 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Name.md b/samples/client/petstore/java-micronaut-client/docs/models/Name.md
similarity index 80%
rename from samples/client/petstore/java-micronaut-client/docs/Name.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Name.md
index e9e41d13435..9595d1d9749 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Name.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Name.md
@@ -4,6 +4,8 @@
 
 Model for testing model name same as property name
 
+The class is defined in **[Name.java](../../src/main/java/org/openapitools/model/Name.java)**
+
 ## Properties
 
 Name | Type | Description | Notes
diff --git a/samples/client/petstore/java-micronaut-client/docs/NumberOnly.md b/samples/client/petstore/java-micronaut-client/docs/models/NumberOnly.md
similarity index 63%
rename from samples/client/petstore/java-micronaut-client/docs/NumberOnly.md
rename to samples/client/petstore/java-micronaut-client/docs/models/NumberOnly.md
index ff8408617c5..1c7c5a3d67a 100644
--- a/samples/client/petstore/java-micronaut-client/docs/NumberOnly.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/NumberOnly.md
@@ -2,6 +2,7 @@
 
 # NumberOnly
 
+The class is defined in **[NumberOnly.java](../../src/main/java/org/openapitools/model/NumberOnly.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Order.md b/samples/client/petstore/java-micronaut-client/docs/models/Order.md
similarity index 72%
rename from samples/client/petstore/java-micronaut-client/docs/Order.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Order.md
index 2522ec781e4..c5f46aad0e1 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Order.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Order.md
@@ -2,6 +2,7 @@
 
 # Order
 
+The class is defined in **[Order.java](../../src/main/java/org/openapitools/model/Order.java)**
 
 ## Properties
 
@@ -16,15 +17,15 @@ Name | Type | Description | Notes
 
 
 
-## Enum: StatusEnum
+
+
+## StatusEnum
 
 Name | Value
 ---- | -----
-PLACED | `&quot;placed&quot;`
-APPROVED | `&quot;approved&quot;`
-DELIVERED | `&quot;delivered&quot;`
-
-
+PLACED | `"placed"`
+APPROVED | `"approved"`
+DELIVERED | `"delivered"`
 
 
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/OuterComposite.md b/samples/client/petstore/java-micronaut-client/docs/models/OuterComposite.md
similarity index 71%
rename from samples/client/petstore/java-micronaut-client/docs/OuterComposite.md
rename to samples/client/petstore/java-micronaut-client/docs/models/OuterComposite.md
index dc004d557a5..13edac13070 100644
--- a/samples/client/petstore/java-micronaut-client/docs/OuterComposite.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/OuterComposite.md
@@ -2,6 +2,7 @@
 
 # OuterComposite
 
+The class is defined in **[OuterComposite.java](../../src/main/java/org/openapitools/model/OuterComposite.java)**
 
 ## Properties
 
@@ -15,4 +16,3 @@ Name | Type | Description | Notes
 
 
 
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/OuterEnum.md b/samples/client/petstore/java-micronaut-client/docs/models/OuterEnum.md
similarity index 55%
rename from samples/client/petstore/java-micronaut-client/docs/OuterEnum.md
rename to samples/client/petstore/java-micronaut-client/docs/models/OuterEnum.md
index 1f9b723eb8e..71fc1dfebad 100644
--- a/samples/client/petstore/java-micronaut-client/docs/OuterEnum.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/OuterEnum.md
@@ -4,6 +4,8 @@
 
 ## Enum
 
+The class is defined in **[OuterEnum.java](../../src/main/java/org/openapitools/model/OuterEnum.java)**
+
 
 * `PLACED` (value: `"placed"`)
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/Pet.md b/samples/client/petstore/java-micronaut-client/docs/models/Pet.md
similarity index 74%
rename from samples/client/petstore/java-micronaut-client/docs/Pet.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Pet.md
index 6a18fe4238d..8abc005db7b 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Pet.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Pet.md
@@ -2,6 +2,7 @@
 
 # Pet
 
+The class is defined in **[Pet.java](../../src/main/java/org/openapitools/model/Pet.java)**
 
 ## Properties
 
@@ -16,15 +17,15 @@ Name | Type | Description | Notes
 
 
 
-## Enum: StatusEnum
+
+
+
+## StatusEnum
 
 Name | Value
 ---- | -----
-AVAILABLE | `&quot;available&quot;`
-PENDING | `&quot;pending&quot;`
-SOLD | `&quot;sold&quot;`
-
-
-
+AVAILABLE | `"available"`
+PENDING | `"pending"`
+SOLD | `"sold"`
 
 
diff --git a/samples/client/petstore/java-micronaut-client/docs/ReadOnlyFirst.md b/samples/client/petstore/java-micronaut-client/docs/models/ReadOnlyFirst.md
similarity index 68%
rename from samples/client/petstore/java-micronaut-client/docs/ReadOnlyFirst.md
rename to samples/client/petstore/java-micronaut-client/docs/models/ReadOnlyFirst.md
index 503ba210dbf..3ee5d2f8e02 100644
--- a/samples/client/petstore/java-micronaut-client/docs/ReadOnlyFirst.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/ReadOnlyFirst.md
@@ -2,6 +2,7 @@
 
 # ReadOnlyFirst
 
+The class is defined in **[ReadOnlyFirst.java](../../src/main/java/org/openapitools/model/ReadOnlyFirst.java)**
 
 ## Properties
 
@@ -13,5 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/SpecialModelName.md b/samples/client/petstore/java-micronaut-client/docs/models/SpecialModelName.md
similarity index 62%
rename from samples/client/petstore/java-micronaut-client/docs/SpecialModelName.md
rename to samples/client/petstore/java-micronaut-client/docs/models/SpecialModelName.md
index 88dbe302799..881887f07a2 100644
--- a/samples/client/petstore/java-micronaut-client/docs/SpecialModelName.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/SpecialModelName.md
@@ -2,6 +2,7 @@
 
 # SpecialModelName
 
+The class is defined in **[SpecialModelName.java](../../src/main/java/org/openapitools/model/SpecialModelName.java)**
 
 ## Properties
 
@@ -11,6 +12,3 @@ Name | Type | Description | Notes
 
 
 
-
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/Tag.md b/samples/client/petstore/java-micronaut-client/docs/models/Tag.md
similarity index 69%
rename from samples/client/petstore/java-micronaut-client/docs/Tag.md
rename to samples/client/petstore/java-micronaut-client/docs/models/Tag.md
index 7de5f5be77f..0f9ae67b0a5 100644
--- a/samples/client/petstore/java-micronaut-client/docs/Tag.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/Tag.md
@@ -2,6 +2,7 @@
 
 # Tag
 
+The class is defined in **[Tag.java](../../src/main/java/org/openapitools/model/Tag.java)**
 
 ## Properties
 
@@ -13,5 +14,3 @@ Name | Type | Description | Notes
 
 
 
-
-
diff --git a/samples/client/petstore/java-micronaut-client/docs/TypeHolderDefault.md b/samples/client/petstore/java-micronaut-client/docs/models/TypeHolderDefault.md
similarity index 72%
rename from samples/client/petstore/java-micronaut-client/docs/TypeHolderDefault.md
rename to samples/client/petstore/java-micronaut-client/docs/models/TypeHolderDefault.md
index 1cd7787e495..cb18bde0ed3 100644
--- a/samples/client/petstore/java-micronaut-client/docs/TypeHolderDefault.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/TypeHolderDefault.md
@@ -2,6 +2,7 @@
 
 # TypeHolderDefault
 
+The class is defined in **[TypeHolderDefault.java](../../src/main/java/org/openapitools/model/TypeHolderDefault.java)**
 
 ## Properties
 
@@ -18,3 +19,4 @@ Name | Type | Description | Notes
 
 
 
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/TypeHolderExample.md b/samples/client/petstore/java-micronaut-client/docs/models/TypeHolderExample.md
similarity index 73%
rename from samples/client/petstore/java-micronaut-client/docs/TypeHolderExample.md
rename to samples/client/petstore/java-micronaut-client/docs/models/TypeHolderExample.md
index 805608ae2b9..83a65f0f276 100644
--- a/samples/client/petstore/java-micronaut-client/docs/TypeHolderExample.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/TypeHolderExample.md
@@ -2,6 +2,7 @@
 
 # TypeHolderExample
 
+The class is defined in **[TypeHolderExample.java](../../src/main/java/org/openapitools/model/TypeHolderExample.java)**
 
 ## Properties
 
@@ -19,3 +20,5 @@ Name | Type | Description | Notes
 
 
 
+
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/User.md b/samples/client/petstore/java-micronaut-client/docs/models/User.md
similarity index 84%
rename from samples/client/petstore/java-micronaut-client/docs/User.md
rename to samples/client/petstore/java-micronaut-client/docs/models/User.md
index 73274c63f19..53064208094 100644
--- a/samples/client/petstore/java-micronaut-client/docs/User.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/User.md
@@ -2,6 +2,7 @@
 
 # User
 
+The class is defined in **[User.java](../../src/main/java/org/openapitools/model/User.java)**
 
 ## Properties
 
@@ -21,3 +22,7 @@ Name | Type | Description | Notes
 
 
 
+
+
+
+
diff --git a/samples/client/petstore/java-micronaut-client/docs/XmlItem.md b/samples/client/petstore/java-micronaut-client/docs/models/XmlItem.md
similarity index 93%
rename from samples/client/petstore/java-micronaut-client/docs/XmlItem.md
rename to samples/client/petstore/java-micronaut-client/docs/models/XmlItem.md
index 2f07c8efbf6..71ca437c2e6 100644
--- a/samples/client/petstore/java-micronaut-client/docs/XmlItem.md
+++ b/samples/client/petstore/java-micronaut-client/docs/models/XmlItem.md
@@ -2,6 +2,7 @@
 
 # XmlItem
 
+The class is defined in **[XmlItem.java](../../src/main/java/org/openapitools/model/XmlItem.java)**
 
 ## Properties
 
@@ -42,3 +43,28 @@ Name | Type | Description | Notes
 
 
 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/samples/client/petstore/java-micronaut-client/gradle.properties b/samples/client/petstore/java-micronaut-client/gradle.properties
index 4804e049014..70b9dde78f1 100644
--- a/samples/client/petstore/java-micronaut-client/gradle.properties
+++ b/samples/client/petstore/java-micronaut-client/gradle.properties
@@ -1 +1 @@
-micronautVersion=3.0.0-M5
\ No newline at end of file
+micronautVersion=3.2.6
\ No newline at end of file
diff --git a/samples/client/petstore/java-micronaut-client/pom.xml b/samples/client/petstore/java-micronaut-client/pom.xml
index c64bc3bb07c..89a43adef33 100644
--- a/samples/client/petstore/java-micronaut-client/pom.xml
+++ b/samples/client/petstore/java-micronaut-client/pom.xml
@@ -10,7 +10,7 @@
     <parent>
         <groupId>io.micronaut</groupId>
         <artifactId>micronaut-parent</artifactId>
-        <version>3.0.0-M5</version>
+        <version>3.2.6</version>
     </parent>
 
     <properties>
@@ -18,7 +18,7 @@
         <jdk.version>1.8</jdk.version>
         <!-- If you are building with JDK 9 or higher, you can uncomment the lines below to set the release version -->
         <!-- <release.version>8</release.version> -->
-        <micronaut.version>3.0.0-M5</micronaut.version>
+        <micronaut.version>3.2.6</micronaut.version>
         <exec.mainClass>org.openapitools.Application</exec.mainClass>
         <micronaut.runtime>netty</micronaut.runtime>
         <swagger-annotations-version>1.5.21</swagger-annotations-version>
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 09c1c9fb397..26e3afaff52 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -15,7 +15,6 @@ package org.openapitools.api;
 import io.micronaut.http.annotation.*;
 import io.micronaut.core.annotation.*;
 import io.micronaut.http.client.annotation.Client;
-import org.openapitools.query.QueryParam;
 import io.micronaut.core.convert.format.Format;
 import reactor.core.publisher.Mono;
 import org.openapitools.model.ModelClient;
@@ -31,18 +30,17 @@ import javax.validation.constraints.*;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Client("${base-path}")
 public interface AnotherFakeApi {
-
-  /**
-   * To test special tags
-   * To test special tags and operation ID starting with number
-   *
-   * @param _body client model (required)
-   * @return ModelClient
-   */
-  @Patch(uri="/another-fake/dummy")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<ModelClient> call123testSpecialTags(
-        @Body @Valid @NotNull ModelClient _body
+    /**
+     * To test special tags
+     * To test special tags and operation ID starting with number
+     *
+     * @param _body client model (required)
+     * @return ModelClient
+     */
+    @Patch(uri="/another-fake/dummy")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<ModelClient> call123testSpecialTags(
+        @Body @NotNull @Valid ModelClient _body
   );
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeApi.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeApi.java
index 1a5913a842c..7f5970b69a6 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeApi.java
@@ -15,7 +15,6 @@ package org.openapitools.api;
 import io.micronaut.http.annotation.*;
 import io.micronaut.core.annotation.*;
 import io.micronaut.http.client.annotation.Client;
-import org.openapitools.query.QueryParam;
 import io.micronaut.core.convert.format.Format;
 import reactor.core.publisher.Mono;
 import java.math.BigDecimal;
@@ -39,242 +38,228 @@ import javax.validation.constraints.*;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Client("${base-path}")
 public interface FakeApi {
-
-  /**
-   * creates an XmlItem
-   * this route creates an XmlItem
-   *
-   * @param xmlItem XmlItem Body (required)
-   */
-  @Post(uri="/fake/create_xml_item")
-  @Produces(value={"application/xml"})
-  @Consumes(value={"application/json"})
-  Mono<Object> createXmlItem(
-        @Body @Valid @NotNull XmlItem xmlItem
+    /**
+     * creates an XmlItem
+     * this route creates an XmlItem
+     *
+     * @param xmlItem XmlItem Body (required)
+     */
+    @Post(uri="/fake/create_xml_item")
+    @Produces(value={"application/xml"})
+    @Consumes(value={"application/json"})
+    Mono<Object> createXmlItem(
+        @Body @NotNull @Valid XmlItem xmlItem
   );
-
-  /**
-   * Test serialization of outer boolean types
-   *
-   * @param _body Input boolean as post body (optional)
-   * @return Boolean
-   */
-  @Post(uri="/fake/outer/boolean")
-  @Produces(value={"*/*"})
-  @Consumes(value={"*/*"})
-  Mono<Boolean> fakeOuterBooleanSerialize(
-        @Body Boolean _body
+    /**
+     * Test serialization of outer boolean types
+     *
+     * @param _body Input boolean as post body (optional)
+     * @return Boolean
+     */
+    @Post(uri="/fake/outer/boolean")
+    @Produces(value={"application/json"})
+    @Consumes(value={"*/*"})
+    Mono<Boolean> fakeOuterBooleanSerialize(
+        @Body @Nullable Boolean _body
   );
-
-  /**
-   * Test serialization of object with outer number type
-   *
-   * @param _body Input composite as post body (optional)
-   * @return OuterComposite
-   */
-  @Post(uri="/fake/outer/composite")
-  @Produces(value={"*/*"})
-  @Consumes(value={"*/*"})
-  Mono<OuterComposite> fakeOuterCompositeSerialize(
-        @Body @Valid OuterComposite _body
+    /**
+     * Test serialization of object with outer number type
+     *
+     * @param _body Input composite as post body (optional)
+     * @return OuterComposite
+     */
+    @Post(uri="/fake/outer/composite")
+    @Produces(value={"application/json"})
+    @Consumes(value={"*/*"})
+    Mono<OuterComposite> fakeOuterCompositeSerialize(
+        @Body @Nullable @Valid OuterComposite _body
   );
-
-  /**
-   * Test serialization of outer number types
-   *
-   * @param _body Input number as post body (optional)
-   * @return BigDecimal
-   */
-  @Post(uri="/fake/outer/number")
-  @Produces(value={"*/*"})
-  @Consumes(value={"*/*"})
-  Mono<BigDecimal> fakeOuterNumberSerialize(
-        @Body BigDecimal _body
+    /**
+     * Test serialization of outer number types
+     *
+     * @param _body Input number as post body (optional)
+     * @return BigDecimal
+     */
+    @Post(uri="/fake/outer/number")
+    @Produces(value={"application/json"})
+    @Consumes(value={"*/*"})
+    Mono<BigDecimal> fakeOuterNumberSerialize(
+        @Body @Nullable BigDecimal _body
   );
-
-  /**
-   * Test serialization of outer string types
-   *
-   * @param _body Input string as post body (optional)
-   * @return String
-   */
-  @Post(uri="/fake/outer/string")
-  @Produces(value={"*/*"})
-  @Consumes(value={"*/*"})
-  Mono<String> fakeOuterStringSerialize(
-        @Body String _body
+    /**
+     * Test serialization of outer string types
+     *
+     * @param _body Input string as post body (optional)
+     * @return String
+     */
+    @Post(uri="/fake/outer/string")
+    @Produces(value={"application/json"})
+    @Consumes(value={"*/*"})
+    Mono<String> fakeOuterStringSerialize(
+        @Body @Nullable String _body
   );
-
-  /**
-   * For this test, the body for this request much reference a schema named &#x60;File&#x60;.
-   *
-   * @param _body  (required)
-   */
-  @Put(uri="/fake/body-with-file-schema")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<Object> testBodyWithFileSchema(
-        @Body @Valid @NotNull FileSchemaTestClass _body
+    /**
+     * For this test, the body for this request much reference a schema named &#x60;File&#x60;.
+     *
+     * @param _body  (required)
+     */
+    @Put(uri="/fake/body-with-file-schema")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> testBodyWithFileSchema(
+        @Body @NotNull @Valid FileSchemaTestClass _body
   );
-
-  /**
-   * testBodyWithQueryParams
-   *
-   * @param query  (required)
-   * @param _body  (required)
-   */
-  @Put(uri="/fake/body-with-query-params")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<Object> testBodyWithQueryParams(
-        @QueryParam(name="query") @NotNull String query, 
-        @Body @Valid @NotNull User _body
+    /**
+     * testBodyWithQueryParams
+     *
+     * @param query  (required)
+     * @param _body  (required)
+     */
+    @Put(uri="/fake/body-with-query-params")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> testBodyWithQueryParams(
+        @QueryValue(value="query") @NotNull String query, 
+        @Body @NotNull @Valid User _body
   );
-
-  /**
-   * To test \&quot;client\&quot; model
-   * To test \&quot;client\&quot; model
-   *
-   * @param _body client model (required)
-   * @return ModelClient
-   */
-  @Patch(uri="/fake")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<ModelClient> testClientModel(
-        @Body @Valid @NotNull ModelClient _body
+    /**
+     * To test \&quot;client\&quot; model
+     * To test \&quot;client\&quot; model
+     *
+     * @param _body client model (required)
+     * @return ModelClient
+     */
+    @Patch(uri="/fake")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<ModelClient> testClientModel(
+        @Body @NotNull @Valid ModelClient _body
   );
-
-  /**
-   * Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트
-   * Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트
-   *
-   * @param number None (required)
-   * @param _double None (required)
-   * @param patternWithoutDelimiter None (required)
-   * @param _byte None (required)
-   * @param integer None (optional)
-   * @param int32 None (optional)
-   * @param int64 None (optional)
-   * @param _float None (optional)
-   * @param string None (optional)
-   * @param binary None (optional)
-   * @param date None (optional)
-   * @param dateTime None (optional)
-   * @param password None (optional)
-   * @param paramCallback None (optional)
-   */
-  @Post(uri="/fake")
-  @Produces(value={"application/x-www-form-urlencoded"})
-  @Consumes(value={"application/json"})
-  Mono<Object> testEndpointParameters(
+    /**
+     * Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트
+     * Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트
+     *
+     * @param number None (required)
+     * @param _double None (required)
+     * @param patternWithoutDelimiter None (required)
+     * @param _byte None (required)
+     * @param integer None (optional)
+     * @param int32 None (optional)
+     * @param int64 None (optional)
+     * @param _float None (optional)
+     * @param string None (optional)
+     * @param binary None (optional)
+     * @param date None (optional)
+     * @param dateTime None (optional)
+     * @param password None (optional)
+     * @param paramCallback None (optional)
+     */
+    @Post(uri="/fake")
+    @Produces(value={"application/x-www-form-urlencoded"})
+    @Consumes(value={"application/json"})
+    Mono<Object> testEndpointParameters(
         @NotNull @DecimalMin("32.1") @DecimalMax("543.2") BigDecimal number, 
         @NotNull @DecimalMin("67.8") @DecimalMax("123.4") Double _double, 
         @NotNull @Pattern(regexp="^[A-Z].*") String patternWithoutDelimiter, 
         @NotNull byte[] _byte, 
-        @Min(10) @Max(100) Integer integer, 
-        @Min(20) @Max(200) Integer int32, 
-        Long int64, 
-        @DecimalMax("987.6") Float _float, 
-        @Pattern(regexp="/[a-z]/i") String string, 
-        File binary, 
-        @Format("yyyy-MM-dd") LocalDate date, 
-        @Format("yyyy-MM-dd'T'HH:mm:ss.SSSXXXX") LocalDateTime dateTime, 
-        @Size(min=10, max=64) String password, 
-        String paramCallback
+        @Nullable @Min(10) @Max(100) Integer integer, 
+        @Nullable @Min(20) @Max(200) Integer int32, 
+        @Nullable Long int64, 
+        @Nullable @DecimalMax("987.6") Float _float, 
+        @Nullable @Pattern(regexp="/[a-z]/i") String string, 
+        @Nullable File binary, 
+        @Nullable @Format("yyyy-MM-dd") LocalDate date, 
+        @Nullable @Format("yyyy-MM-dd'T'HH:mm:ss.SSSXXXX") LocalDateTime dateTime, 
+        @Nullable @Size(min=10, max=64) String password, 
+        @Nullable String paramCallback
   );
-
-  /**
-   * To test enum parameters
-   * To test enum parameters
-   *
-   * @param enumHeaderStringArray Header parameter enum test (string array) (optional)
-   * @param enumHeaderString Header parameter enum test (string) (optional, default to -efg)
-   * @param enumQueryStringArray Query parameter enum test (string array) (optional)
-   * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
-   * @param enumQueryInteger Query parameter enum test (double) (optional)
-   * @param enumQueryDouble Query parameter enum test (double) (optional)
-   * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
-   * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
-   */
-  @Get(uri="/fake")
-  @Produces(value={"application/x-www-form-urlencoded"})
-  @Consumes(value={"application/json"})
-  Mono<Object> testEnumParameters(
-        @Header(name="enum_header_string_array") List<String> enumHeaderStringArray, 
-        @Header(name="enum_header_string", defaultValue="-efg") String enumHeaderString, 
-        @QueryParam(name="enum_query_string_array", format=QueryParam.Format.CSV) List<String> enumQueryStringArray, 
-        @QueryParam(name="enum_query_string", defaultValue="-efg") String enumQueryString, 
-        @QueryParam(name="enum_query_integer") Integer enumQueryInteger, 
-        @QueryParam(name="enum_query_double") Double enumQueryDouble, 
-        List<String> enumFormStringArray, 
-        String enumFormString
+    /**
+     * To test enum parameters
+     * To test enum parameters
+     *
+     * @param enumHeaderStringArray Header parameter enum test (string array) (optional)
+     * @param enumHeaderString Header parameter enum test (string) (optional, default to -efg)
+     * @param enumQueryStringArray Query parameter enum test (string array) (optional)
+     * @param enumQueryString Query parameter enum test (string) (optional, default to -efg)
+     * @param enumQueryInteger Query parameter enum test (double) (optional)
+     * @param enumQueryDouble Query parameter enum test (double) (optional)
+     * @param enumFormStringArray Form parameter enum test (string array) (optional, default to $)
+     * @param enumFormString Form parameter enum test (string) (optional, default to -efg)
+     */
+    @Get(uri="/fake")
+    @Produces(value={"application/x-www-form-urlencoded"})
+    @Consumes(value={"application/json"})
+    Mono<Object> testEnumParameters(
+        @Header(name="enum_header_string_array") @Nullable List<String> enumHeaderStringArray, 
+        @Header(name="enum_header_string", defaultValue="-efg") @Nullable String enumHeaderString, 
+        @QueryValue(value="enum_query_string_array") @Nullable List<String> enumQueryStringArray, 
+        @QueryValue(value="enum_query_string", defaultValue="-efg") @Nullable String enumQueryString, 
+        @QueryValue(value="enum_query_integer") @Nullable Integer enumQueryInteger, 
+        @QueryValue(value="enum_query_double") @Nullable Double enumQueryDouble, 
+        @Nullable List<String> enumFormStringArray, 
+        @Nullable String enumFormString
   );
-
-  /**
-   * Fake endpoint to test group parameters (optional)
-   * Fake endpoint to test group parameters (optional)
-   *
-   * @param requiredStringGroup Required String in group parameters (required)
-   * @param requiredBooleanGroup Required Boolean in group parameters (required)
-   * @param requiredInt64Group Required Integer in group parameters (required)
-   * @param stringGroup String in group parameters (optional)
-   * @param booleanGroup Boolean in group parameters (optional)
-   * @param int64Group Integer in group parameters (optional)
-   */
-  @Delete(uri="/fake")
-  @Consumes(value={"application/json"})
-  Mono<Object> testGroupParameters(
-        @QueryParam(name="required_string_group") @NotNull Integer requiredStringGroup, 
+    /**
+     * Fake endpoint to test group parameters (optional)
+     * Fake endpoint to test group parameters (optional)
+     *
+     * @param requiredStringGroup Required String in group parameters (required)
+     * @param requiredBooleanGroup Required Boolean in group parameters (required)
+     * @param requiredInt64Group Required Integer in group parameters (required)
+     * @param stringGroup String in group parameters (optional)
+     * @param booleanGroup Boolean in group parameters (optional)
+     * @param int64Group Integer in group parameters (optional)
+     */
+    @Delete(uri="/fake")
+    @Consumes(value={"application/json"})
+    Mono<Object> testGroupParameters(
+        @QueryValue(value="required_string_group") @NotNull Integer requiredStringGroup, 
         @Header(name="required_boolean_group") @NotNull Boolean requiredBooleanGroup, 
-        @QueryParam(name="required_int64_group") @NotNull Long requiredInt64Group, 
-        @QueryParam(name="string_group") Integer stringGroup, 
-        @Header(name="boolean_group") Boolean booleanGroup, 
-        @QueryParam(name="int64_group") Long int64Group
+        @QueryValue(value="required_int64_group") @NotNull Long requiredInt64Group, 
+        @QueryValue(value="string_group") @Nullable Integer stringGroup, 
+        @Header(name="boolean_group") @Nullable Boolean booleanGroup, 
+        @QueryValue(value="int64_group") @Nullable Long int64Group
   );
-
-  /**
-   * test inline additionalProperties
-   *
-   * @param param request body (required)
-   */
-  @Post(uri="/fake/inline-additionalProperties")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<Object> testInlineAdditionalProperties(
+    /**
+     * test inline additionalProperties
+     *
+     * @param param request body (required)
+     */
+    @Post(uri="/fake/inline-additionalProperties")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> testInlineAdditionalProperties(
         @Body @NotNull Map<String, String> param
   );
-
-  /**
-   * test json serialization of form data
-   *
-   * @param param field1 (required)
-   * @param param2 field2 (required)
-   */
-  @Get(uri="/fake/jsonFormData")
-  @Produces(value={"application/x-www-form-urlencoded"})
-  @Consumes(value={"application/json"})
-  Mono<Object> testJsonFormData(
+    /**
+     * test json serialization of form data
+     *
+     * @param param field1 (required)
+     * @param param2 field2 (required)
+     */
+    @Get(uri="/fake/jsonFormData")
+    @Produces(value={"application/x-www-form-urlencoded"})
+    @Consumes(value={"application/json"})
+    Mono<Object> testJsonFormData(
         @NotNull String param, 
         @NotNull String param2
   );
-
-  /**
-   * To test the collection format in query parameters
-   *
-   * @param pipe  (required)
-   * @param ioutil  (required)
-   * @param http  (required)
-   * @param url  (required)
-   * @param context  (required)
-   */
-  @Put(uri="/fake/test-query-parameters")
-  @Consumes(value={"application/json"})
-  Mono<Object> testQueryParameterCollectionFormat(
-        @QueryParam(name="pipe", format=QueryParam.Format.CSV) @NotNull List<String> pipe, 
-        @QueryParam(name="ioutil", format=QueryParam.Format.CSV) @NotNull List<String> ioutil, 
-        @QueryParam(name="http", format=QueryParam.Format.SSV) @NotNull List<String> http, 
-        @QueryParam(name="url", format=QueryParam.Format.CSV) @NotNull List<String> url, 
-        @QueryParam(name="context", format=QueryParam.Format.MULTI) @NotNull List<String> context
+    /**
+     * To test the collection format in query parameters
+     *
+     * @param pipe  (required)
+     * @param ioutil  (required)
+     * @param http  (required)
+     * @param url  (required)
+     * @param context  (required)
+     */
+    @Put(uri="/fake/test-query-parameters")
+    @Consumes(value={"application/json"})
+    Mono<Object> testQueryParameterCollectionFormat(
+        @QueryValue(value="pipe") @NotNull List<String> pipe, 
+        @QueryValue(value="ioutil") @NotNull List<String> ioutil, 
+        @QueryValue(value="http") @NotNull List<String> http, 
+        @QueryValue(value="url") @NotNull List<String> url, 
+        @QueryValue(value="context") @NotNull List<String> context
   );
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java
index e586776bc7d..5b965862178 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java
@@ -15,7 +15,6 @@ package org.openapitools.api;
 import io.micronaut.http.annotation.*;
 import io.micronaut.core.annotation.*;
 import io.micronaut.http.client.annotation.Client;
-import org.openapitools.query.QueryParam;
 import io.micronaut.core.convert.format.Format;
 import reactor.core.publisher.Mono;
 import org.openapitools.model.ModelClient;
@@ -31,18 +30,17 @@ import javax.validation.constraints.*;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Client("${base-path}")
 public interface FakeClassnameTags123Api {
-
-  /**
-   * To test class name in snake case
-   * To test class name in snake case
-   *
-   * @param _body client model (required)
-   * @return ModelClient
-   */
-  @Patch(uri="/fake_classname_test")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<ModelClient> testClassname(
-        @Body @Valid @NotNull ModelClient _body
+    /**
+     * To test class name in snake case
+     * To test class name in snake case
+     *
+     * @param _body client model (required)
+     * @return ModelClient
+     */
+    @Patch(uri="/fake_classname_test")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<ModelClient> testClassname(
+        @Body @NotNull @Valid ModelClient _body
   );
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/PetApi.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/PetApi.java
index e570abe961d..a49acded581 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/PetApi.java
@@ -15,7 +15,6 @@ package org.openapitools.api;
 import io.micronaut.http.annotation.*;
 import io.micronaut.core.annotation.*;
 import io.micronaut.http.client.annotation.Client;
-import org.openapitools.query.QueryParam;
 import io.micronaut.core.convert.format.Format;
 import reactor.core.publisher.Mono;
 import java.io.File;
@@ -34,130 +33,121 @@ import javax.validation.constraints.*;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Client("${base-path}")
 public interface PetApi {
-
-  /**
-   * Add a new pet to the store
-   *
-   * @param _body Pet object that needs to be added to the store (required)
-   */
-  @Post(uri="/pet")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<Object> addPet(
-        @Body @Valid @NotNull Pet _body
+    /**
+     * Add a new pet to the store
+     *
+     * @param _body Pet object that needs to be added to the store (required)
+     */
+    @Post(uri="/pet")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> addPet(
+        @Body @NotNull @Valid Pet _body
   );
-
-  /**
-   * Deletes a pet
-   *
-   * @param petId Pet id to delete (required)
-   * @param apiKey  (optional)
-   */
-  @Delete(uri="/pet/{petId}")
-  @Consumes(value={"application/json"})
-  Mono<Object> deletePet(
+    /**
+     * Deletes a pet
+     *
+     * @param petId Pet id to delete (required)
+     * @param apiKey  (optional)
+     */
+    @Delete(uri="/pet/{petId}")
+    @Consumes(value={"application/json"})
+    Mono<Object> deletePet(
         @PathVariable(name="petId") @NotNull Long petId, 
-        @Header(name="api_key") String apiKey
+        @Header(name="api_key") @Nullable String apiKey
   );
-
-  /**
-   * Finds Pets by status
-   * Multiple status values can be provided with comma separated strings
-   *
-   * @param status Status values that need to be considered for filter (required)
-   * @return List&lt;Pet&gt;
-   */
-  @Get(uri="/pet/findByStatus")
-  @Consumes(value={"application/json"})
-  Mono<List<Pet>> findPetsByStatus(
-        @QueryParam(name="status", format=QueryParam.Format.CSV) @NotNull List<String> status
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     *
+     * @param status Status values that need to be considered for filter (required)
+     * @return List&lt;Pet&gt;
+     */
+    @Get(uri="/pet/findByStatus")
+    @Consumes(value={"application/json"})
+    Mono<List<Pet>> findPetsByStatus(
+        @QueryValue(value="status") @NotNull List<String> status
   );
-
-  /**
-   * Finds Pets by tags
-   * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
-   *
-   * @param tags Tags to filter by (required)
-   * @return Set&lt;Pet&gt;
-   */
-  @Get(uri="/pet/findByTags")
-  @Consumes(value={"application/json"})
-  Mono<Set<Pet>> findPetsByTags(
-        @QueryParam(name="tags", format=QueryParam.Format.CSV) @NotNull Set<String> tags
+    /**
+     * Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     *
+     * @param tags Tags to filter by (required)
+     * @return Set&lt;Pet&gt;
+     */
+    @Get(uri="/pet/findByTags")
+    @Consumes(value={"application/json"})
+    Mono<Set<Pet>> findPetsByTags(
+        @QueryValue(value="tags") @NotNull Set<String> tags
   );
-
-  /**
-   * Find pet by ID
-   * Returns a single pet
-   *
-   * @param petId ID of pet to return (required)
-   * @return Pet
-   */
-  @Get(uri="/pet/{petId}")
-  @Consumes(value={"application/json"})
-  Mono<Pet> getPetById(
+    /**
+     * Find pet by ID
+     * Returns a single pet
+     *
+     * @param petId ID of pet to return (required)
+     * @return Pet
+     */
+    @Get(uri="/pet/{petId}")
+    @Consumes(value={"application/json"})
+    Mono<Pet> getPetById(
         @PathVariable(name="petId") @NotNull Long petId
   );
-
-  /**
-   * Update an existing pet
-   *
-   * @param _body Pet object that needs to be added to the store (required)
-   */
-  @Put(uri="/pet")
-  @Produces(value={"application/json"})
-  @Consumes(value={"application/json"})
-  Mono<Object> updatePet(
-        @Body @Valid @NotNull Pet _body
+    /**
+     * Update an existing pet
+     *
+     * @param _body Pet object that needs to be added to the store (required)
+     */
+    @Put(uri="/pet")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> updatePet(
+        @Body @NotNull @Valid Pet _body
   );
-
-  /**
-   * Updates a pet in the store with form data
-   *
-   * @param petId ID of pet that needs to be updated (required)
-   * @param name Updated name of the pet (optional)
-   * @param status Updated status of the pet (optional)
-   */
-  @Post(uri="/pet/{petId}")
-  @Produces(value={"application/x-www-form-urlencoded"})
-  @Consumes(value={"application/json"})
-  Mono<Object> updatePetWithForm(
+    /**
+     * Updates a pet in the store with form data
+     *
+     * @param petId ID of pet that needs to be updated (required)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
+     */
+    @Post(uri="/pet/{petId}")
+    @Produces(value={"application/x-www-form-urlencoded"})
+    @Consumes(value={"application/json"})
+    Mono<Object> updatePetWithForm(
         @PathVariable(name="petId") @NotNull Long petId, 
-        String name, 
-        String status
+        @Nullable String name, 
+        @Nullable String status
   );
-
-  /**
-   * uploads an image
-   *
-   * @param petId ID of pet to update (required)
-   * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
-   * @return ModelApiResponse
-   */
-  @Post(uri="/pet/{petId}/uploadImage")
-  @Produces(value={"multipart/form-data"})
-  @Consumes(value={"application/json"})
-  Mono<ModelApiResponse> uploadFile(
+    /**
+     * uploads an image
+     *
+     * @param petId ID of pet to update (required)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param _file file to upload (optional)
+     * @return ModelApiResponse
+     */
+    @Post(uri="/pet/{petId}/uploadImage")
+    @Produces(value={"multipart/form-data"})
+    @Consumes(value={"application/json"})
+    Mono<ModelApiResponse> uploadFile(
         @PathVariable(name="petId") @NotNull Long petId, 
-        String additionalMetadata, 
-        File file
+        @Nullable String additionalMetadata, 
+        @Nullable File _file
   );
-
-  /**
-   * uploads an image (required)
-   *
-   * @param petId ID of pet to update (required)
-   * @param requiredFile file to upload (required)
-   * @param additionalMetadata Additional data to pass to server (optional)
-   * @return ModelApiResponse
-   */
-  @Post(uri="/fake/{petId}/uploadImageWithRequiredFile")
-  @Produces(value={"multipart/form-data"})
-  @Consumes(value={"application/json"})
-  Mono<ModelApiResponse> uploadFileWithRequiredFile(
+    /**
+     * uploads an image (required)
+     *
+     * @param petId ID of pet to update (required)
+     * @param requiredFile file to upload (required)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @return ModelApiResponse
+     */
+    @Post(uri="/fake/{petId}/uploadImageWithRequiredFile")
+    @Produces(value={"multipart/form-data"})
+    @Consumes(value={"application/json"})
+    Mono<ModelApiResponse> uploadFileWithRequiredFile(
         @PathVariable(name="petId") @NotNull Long petId, 
         @NotNull File requiredFile, 
-        String additionalMetadata
+        @Nullable String additionalMetadata
   );
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/StoreApi.java
index 5a0bb8af787..36ccca35533 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/StoreApi.java
@@ -15,7 +15,6 @@ package org.openapitools.api;
 import io.micronaut.http.annotation.*;
 import io.micronaut.core.annotation.*;
 import io.micronaut.http.client.annotation.Client;
-import org.openapitools.query.QueryParam;
 import io.micronaut.core.convert.format.Format;
 import reactor.core.publisher.Mono;
 import org.openapitools.model.Order;
@@ -31,52 +30,48 @@ import javax.validation.constraints.*;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Client("${base-path}")
 public interface StoreApi {
-
-  /**
-   * Delete purchase order by ID
-   * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
-   *
-   * @param orderId ID of the order that needs to be deleted (required)
-   */
-  @Delete(uri="/store/order/{order_id}")
-  @Consumes(value={"application/json"})
-  Mono<Object> deleteOrder(
+    /**
+     * Delete purchase order by ID
+     * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+     *
+     * @param orderId ID of the order that needs to be deleted (required)
+     */
+    @Delete(uri="/store/order/{order_id}")
+    @Consumes(value={"application/json"})
+    Mono<Object> deleteOrder(
         @PathVariable(name="order_id") @NotNull String orderId
   );
-
-  /**
-   * Returns pet inventories by status
-   * Returns a map of status codes to quantities
-   *
-   * @return Map&lt;String, Integer&gt;
-   */
-  @Get(uri="/store/inventory")
-  @Consumes(value={"application/json"})
-  Mono<Map<String, Integer>> getInventory();
-
-  /**
-   * Find purchase order by ID
-   * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
-   *
-   * @param orderId ID of pet that needs to be fetched (required)
-   * @return Order
-   */
-  @Get(uri="/store/order/{order_id}")
-  @Consumes(value={"application/json"})
-  Mono<Order> getOrderById(
+    /**
+     * Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     *
+     * @return Map&lt;String, Integer&gt;
+     */
+    @Get(uri="/store/inventory")
+    @Consumes(value={"application/json"})
+    Mono<Map<String, Integer>> getInventory();
+    /**
+     * Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     *
+     * @param orderId ID of pet that needs to be fetched (required)
+     * @return Order
+     */
+    @Get(uri="/store/order/{order_id}")
+    @Consumes(value={"application/json"})
+    Mono<Order> getOrderById(
         @PathVariable(name="order_id") @NotNull @Min(1L) @Max(5L) Long orderId
   );
-
-  /**
-   * Place an order for a pet
-   *
-   * @param _body order placed for purchasing the pet (required)
-   * @return Order
-   */
-  @Post(uri="/store/order")
-  @Produces(value={"*/*"})
-  @Consumes(value={"application/json"})
-  Mono<Order> placeOrder(
-        @Body @Valid @NotNull Order _body
+    /**
+     * Place an order for a pet
+     *
+     * @param _body order placed for purchasing the pet (required)
+     * @return Order
+     */
+    @Post(uri="/store/order")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Order> placeOrder(
+        @Body @NotNull @Valid Order _body
   );
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/UserApi.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/UserApi.java
index 6e608808a73..8fa12ce923b 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/api/UserApi.java
@@ -15,7 +15,6 @@ package org.openapitools.api;
 import io.micronaut.http.annotation.*;
 import io.micronaut.core.annotation.*;
 import io.micronaut.http.client.annotation.Client;
-import org.openapitools.query.QueryParam;
 import io.micronaut.core.convert.format.Format;
 import reactor.core.publisher.Mono;
 import java.time.LocalDateTime;
@@ -32,102 +31,94 @@ import javax.validation.constraints.*;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Client("${base-path}")
 public interface UserApi {
-
-  /**
-   * Create user
-   * This can only be done by the logged in user.
-   *
-   * @param _body Created user object (required)
-   */
-  @Post(uri="/user")
-  @Produces(value={"*/*"})
-  @Consumes(value={"application/json"})
-  Mono<Object> createUser(
-        @Body @Valid @NotNull User _body
+    /**
+     * Create user
+     * This can only be done by the logged in user.
+     *
+     * @param _body Created user object (required)
+     */
+    @Post(uri="/user")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> createUser(
+        @Body @NotNull @Valid User _body
   );
-
-  /**
-   * Creates list of users with given input array
-   *
-   * @param _body List of user object (required)
-   */
-  @Post(uri="/user/createWithArray")
-  @Produces(value={"*/*"})
-  @Consumes(value={"application/json"})
-  Mono<Object> createUsersWithArrayInput(
+    /**
+     * Creates list of users with given input array
+     *
+     * @param _body List of user object (required)
+     */
+    @Post(uri="/user/createWithArray")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> createUsersWithArrayInput(
         @Body @NotNull List<User> _body
   );
-
-  /**
-   * Creates list of users with given input array
-   *
-   * @param _body List of user object (required)
-   */
-  @Post(uri="/user/createWithList")
-  @Produces(value={"*/*"})
-  @Consumes(value={"application/json"})
-  Mono<Object> createUsersWithListInput(
+    /**
+     * Creates list of users with given input array
+     *
+     * @param _body List of user object (required)
+     */
+    @Post(uri="/user/createWithList")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> createUsersWithListInput(
         @Body @NotNull List<User> _body
   );
-
-  /**
-   * Delete user
-   * This can only be done by the logged in user.
-   *
-   * @param username The name that needs to be deleted (required)
-   */
-  @Delete(uri="/user/{username}")
-  @Consumes(value={"application/json"})
-  Mono<Object> deleteUser(
+    /**
+     * Delete user
+     * This can only be done by the logged in user.
+     *
+     * @param username The name that needs to be deleted (required)
+     */
+    @Delete(uri="/user/{username}")
+    @Consumes(value={"application/json"})
+    Mono<Object> deleteUser(
         @PathVariable(name="username") @NotNull String username
   );
-
-  /**
-   * Get user by user name
-   *
-   * @param username The name that needs to be fetched. Use user1 for testing. (required)
-   * @return User
-   */
-  @Get(uri="/user/{username}")
-  @Consumes(value={"application/json"})
-  Mono<User> getUserByName(
+    /**
+     * Get user by user name
+     *
+     * @param username The name that needs to be fetched. Use user1 for testing. (required)
+     * @return User
+     */
+    @Get(uri="/user/{username}")
+    @Consumes(value={"application/json"})
+    Mono<User> getUserByName(
         @PathVariable(name="username") @NotNull String username
   );
-
-  /**
-   * Logs user into the system
-   *
-   * @param username The user name for login (required)
-   * @param password The password for login in clear text (required)
-   * @return String
-   */
-  @Get(uri="/user/login")
-  @Consumes(value={"application/json"})
-  Mono<String> loginUser(
-        @QueryParam(name="username") @NotNull String username, 
-        @QueryParam(name="password") @NotNull String password
+    /**
+     * Logs user into the system
+     *
+     * @param username The user name for login (required)
+     * @param password The password for login in clear text (required)
+     * @return String
+     */
+    @Get(uri="/user/login")
+    @Consumes(value={"application/json"})
+    Mono<String> loginUser(
+        @QueryValue(value="username") @NotNull String username, 
+        @QueryValue(value="password") @NotNull String password
   );
-
-  /**
-   * Logs out current logged in user session
-   *
-   */
-  @Get(uri="/user/logout")
-  @Consumes(value={"application/json"})
-  Mono<Object> logoutUser();
-
-  /**
-   * Updated user
-   * This can only be done by the logged in user.
-   *
-   * @param username name that need to be deleted (required)
-   * @param _body Updated user object (required)
-   */
-  @Put(uri="/user/{username}")
-  @Produces(value={"*/*"})
-  @Consumes(value={"application/json"})
-  Mono<Object> updateUser(
+    /**
+     * Logs out current logged in user session
+     *
+     */
+    @Get(uri="/user/logout")
+    @Consumes(value={"application/json"})
+    Mono<Object> logoutUser();
+    /**
+     * Updated user
+     * This can only be done by the logged in user.
+     *
+     * @param username name that need to be deleted (required)
+     * @param _body Updated user object (required)
+     */
+    @Put(uri="/user/{username}")
+    @Produces(value={"application/json"})
+    @Consumes(value={"application/json"})
+    Mono<Object> updateUser(
         @PathVariable(name="username") @NotNull String username, 
-        @Body @Valid @NotNull User _body
+        @Body @NotNull @Valid User _body
   );
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index c727e3389ab..96ce13164ee 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesAnyType extends HashMap<String, Object> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesAnyType name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesAnyType() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesAnyType name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesAnyType additionalPropertiesAnyType = (AdditionalPropertiesAnyType) o;
-    return Objects.equals(this.name, additionalPropertiesAnyType.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesAnyType {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesAnyType additionalPropertiesAnyType = (AdditionalPropertiesAnyType) o;
+        return Objects.equals(this.name, additionalPropertiesAnyType.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesAnyType {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 749c516be0a..107272b74d1 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -36,69 +36,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesArray extends HashMap<String, List> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesArray name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesArray() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesArray name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesArray additionalPropertiesArray = (AdditionalPropertiesArray) o;
-    return Objects.equals(this.name, additionalPropertiesArray.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesArray {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesArray additionalPropertiesArray = (AdditionalPropertiesArray) o;
+        return Objects.equals(this.name, additionalPropertiesArray.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesArray {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 859739c31a5..cfdb8791d0a 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesBoolean name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesBoolean() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesBoolean name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesBoolean additionalPropertiesBoolean = (AdditionalPropertiesBoolean) o;
-    return Objects.equals(this.name, additionalPropertiesBoolean.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesBoolean {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesBoolean additionalPropertiesBoolean = (AdditionalPropertiesBoolean) o;
+        return Objects.equals(this.name, additionalPropertiesBoolean.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesBoolean {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index aef32243b4e..8e130aca02e 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -47,411 +47,413 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesClass {
-  public static final String JSON_PROPERTY_MAP_STRING = "map_string";
-  private Map<String, String> mapString = null;
+    public static final String JSON_PROPERTY_MAP_STRING = "map_string";
+    private Map<String, String> mapString = null;
 
-  public static final String JSON_PROPERTY_MAP_NUMBER = "map_number";
-  private Map<String, BigDecimal> mapNumber = null;
+    public static final String JSON_PROPERTY_MAP_NUMBER = "map_number";
+    private Map<String, BigDecimal> mapNumber = null;
 
-  public static final String JSON_PROPERTY_MAP_INTEGER = "map_integer";
-  private Map<String, Integer> mapInteger = null;
+    public static final String JSON_PROPERTY_MAP_INTEGER = "map_integer";
+    private Map<String, Integer> mapInteger = null;
 
-  public static final String JSON_PROPERTY_MAP_BOOLEAN = "map_boolean";
-  private Map<String, Boolean> mapBoolean = null;
+    public static final String JSON_PROPERTY_MAP_BOOLEAN = "map_boolean";
+    private Map<String, Boolean> mapBoolean = null;
 
-  public static final String JSON_PROPERTY_MAP_ARRAY_INTEGER = "map_array_integer";
-  private Map<String, List<Integer>> mapArrayInteger = null;
+    public static final String JSON_PROPERTY_MAP_ARRAY_INTEGER = "map_array_integer";
+    private Map<String, List<Integer>> mapArrayInteger = null;
 
-  public static final String JSON_PROPERTY_MAP_ARRAY_ANYTYPE = "map_array_anytype";
-  private Map<String, List<Object>> mapArrayAnytype = null;
+    public static final String JSON_PROPERTY_MAP_ARRAY_ANYTYPE = "map_array_anytype";
+    private Map<String, List<Object>> mapArrayAnytype = null;
 
-  public static final String JSON_PROPERTY_MAP_MAP_STRING = "map_map_string";
-  private Map<String, Map<String, String>> mapMapString = null;
+    public static final String JSON_PROPERTY_MAP_MAP_STRING = "map_map_string";
+    private Map<String, Map<String, String>> mapMapString = null;
 
-  public static final String JSON_PROPERTY_MAP_MAP_ANYTYPE = "map_map_anytype";
-  private Map<String, Map<String, Object>> mapMapAnytype = null;
+    public static final String JSON_PROPERTY_MAP_MAP_ANYTYPE = "map_map_anytype";
+    private Map<String, Map<String, Object>> mapMapAnytype = null;
 
-  public static final String JSON_PROPERTY_ANYTYPE1 = "anytype_1";
-  private Object anytype1;
+    public static final String JSON_PROPERTY_ANYTYPE1 = "anytype_1";
+    private Object anytype1;
 
-  public static final String JSON_PROPERTY_ANYTYPE2 = "anytype_2";
-  private Object anytype2;
+    public static final String JSON_PROPERTY_ANYTYPE2 = "anytype_2";
+    private Object anytype2;
 
-  public static final String JSON_PROPERTY_ANYTYPE3 = "anytype_3";
-  private Object anytype3;
+    public static final String JSON_PROPERTY_ANYTYPE3 = "anytype_3";
+    private Object anytype3;
 
-  public AdditionalPropertiesClass mapString(Map<String, String> mapString) {
-    this.mapString = mapString;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapStringItem(String key, String mapStringItem) {
-    if (this.mapString == null) {
-      this.mapString = new HashMap<String, String>();
+    public AdditionalPropertiesClass() {
     }
-    this.mapString.put(key, mapStringItem);
-    return this;
-  }
-
-  /**
-   * Get mapString
-   * @return mapString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, String> getMapString() {
-    return mapString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapString(Map<String, String> mapString) {
-    this.mapString = mapString;
-  }
-
-  public AdditionalPropertiesClass mapNumber(Map<String, BigDecimal> mapNumber) {
-    this.mapNumber = mapNumber;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapNumberItem(String key, BigDecimal mapNumberItem) {
-    if (this.mapNumber == null) {
-      this.mapNumber = new HashMap<String, BigDecimal>();
+    public AdditionalPropertiesClass mapString(Map<String, String> mapString) {
+        this.mapString = mapString;
+        return this;
     }
-    this.mapNumber.put(key, mapNumberItem);
-    return this;
+
+    public AdditionalPropertiesClass putMapStringItem(String key, String mapStringItem) {
+        if (this.mapString == null) {
+            this.mapString = new HashMap<String, String>();
+        }
+        this.mapString.put(key, mapStringItem);
+        return this;
   }
 
-  /**
-   * Get mapNumber
-   * @return mapNumber
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, BigDecimal> getMapNumber() {
-    return mapNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapNumber(Map<String, BigDecimal> mapNumber) {
-    this.mapNumber = mapNumber;
-  }
-
-  public AdditionalPropertiesClass mapInteger(Map<String, Integer> mapInteger) {
-    this.mapInteger = mapInteger;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapIntegerItem(String key, Integer mapIntegerItem) {
-    if (this.mapInteger == null) {
-      this.mapInteger = new HashMap<String, Integer>();
+    /**
+     * Get mapString
+     * @return mapString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, String> getMapString() {
+        return mapString;
     }
-    this.mapInteger.put(key, mapIntegerItem);
-    return this;
-  }
 
-  /**
-   * Get mapInteger
-   * @return mapInteger
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Integer> getMapInteger() {
-    return mapInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapInteger(Map<String, Integer> mapInteger) {
-    this.mapInteger = mapInteger;
-  }
-
-  public AdditionalPropertiesClass mapBoolean(Map<String, Boolean> mapBoolean) {
-    this.mapBoolean = mapBoolean;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapBooleanItem(String key, Boolean mapBooleanItem) {
-    if (this.mapBoolean == null) {
-      this.mapBoolean = new HashMap<String, Boolean>();
+    @JsonProperty(JSON_PROPERTY_MAP_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapString(Map<String, String> mapString) {
+        this.mapString = mapString;
     }
-    this.mapBoolean.put(key, mapBooleanItem);
-    return this;
-  }
 
-  /**
-   * Get mapBoolean
-   * @return mapBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Boolean> getMapBoolean() {
-    return mapBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapBoolean(Map<String, Boolean> mapBoolean) {
-    this.mapBoolean = mapBoolean;
-  }
-
-  public AdditionalPropertiesClass mapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
-    this.mapArrayInteger = mapArrayInteger;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapArrayIntegerItem(String key, List<Integer> mapArrayIntegerItem) {
-    if (this.mapArrayInteger == null) {
-      this.mapArrayInteger = new HashMap<String, List<Integer>>();
+    public AdditionalPropertiesClass mapNumber(Map<String, BigDecimal> mapNumber) {
+        this.mapNumber = mapNumber;
+        return this;
     }
-    this.mapArrayInteger.put(key, mapArrayIntegerItem);
-    return this;
+
+    public AdditionalPropertiesClass putMapNumberItem(String key, BigDecimal mapNumberItem) {
+        if (this.mapNumber == null) {
+            this.mapNumber = new HashMap<String, BigDecimal>();
+        }
+        this.mapNumber.put(key, mapNumberItem);
+        return this;
   }
 
-  /**
-   * Get mapArrayInteger
-   * @return mapArrayInteger
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_ARRAY_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, List<Integer>> getMapArrayInteger() {
-    return mapArrayInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_ARRAY_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
-    this.mapArrayInteger = mapArrayInteger;
-  }
-
-  public AdditionalPropertiesClass mapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
-    this.mapArrayAnytype = mapArrayAnytype;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapArrayAnytypeItem(String key, List<Object> mapArrayAnytypeItem) {
-    if (this.mapArrayAnytype == null) {
-      this.mapArrayAnytype = new HashMap<String, List<Object>>();
+    /**
+     * Get mapNumber
+     * @return mapNumber
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, BigDecimal> getMapNumber() {
+        return mapNumber;
     }
-    this.mapArrayAnytype.put(key, mapArrayAnytypeItem);
-    return this;
-  }
 
-  /**
-   * Get mapArrayAnytype
-   * @return mapArrayAnytype
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_ARRAY_ANYTYPE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, List<Object>> getMapArrayAnytype() {
-    return mapArrayAnytype;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_ARRAY_ANYTYPE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
-    this.mapArrayAnytype = mapArrayAnytype;
-  }
-
-  public AdditionalPropertiesClass mapMapString(Map<String, Map<String, String>> mapMapString) {
-    this.mapMapString = mapMapString;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapMapStringItem(String key, Map<String, String> mapMapStringItem) {
-    if (this.mapMapString == null) {
-      this.mapMapString = new HashMap<String, Map<String, String>>();
+    @JsonProperty(JSON_PROPERTY_MAP_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapNumber(Map<String, BigDecimal> mapNumber) {
+        this.mapNumber = mapNumber;
     }
-    this.mapMapString.put(key, mapMapStringItem);
-    return this;
-  }
 
-  /**
-   * Get mapMapString
-   * @return mapMapString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_MAP_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Map<String, String>> getMapMapString() {
-    return mapMapString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_MAP_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapMapString(Map<String, Map<String, String>> mapMapString) {
-    this.mapMapString = mapMapString;
-  }
-
-  public AdditionalPropertiesClass mapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
-    this.mapMapAnytype = mapMapAnytype;
-    return this;
-  }
-
-  public AdditionalPropertiesClass putMapMapAnytypeItem(String key, Map<String, Object> mapMapAnytypeItem) {
-    if (this.mapMapAnytype == null) {
-      this.mapMapAnytype = new HashMap<String, Map<String, Object>>();
+    public AdditionalPropertiesClass mapInteger(Map<String, Integer> mapInteger) {
+        this.mapInteger = mapInteger;
+        return this;
     }
-    this.mapMapAnytype.put(key, mapMapAnytypeItem);
-    return this;
+
+    public AdditionalPropertiesClass putMapIntegerItem(String key, Integer mapIntegerItem) {
+        if (this.mapInteger == null) {
+            this.mapInteger = new HashMap<String, Integer>();
+        }
+        this.mapInteger.put(key, mapIntegerItem);
+        return this;
   }
 
-  /**
-   * Get mapMapAnytype
-   * @return mapMapAnytype
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_MAP_ANYTYPE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Map<String, Object>> getMapMapAnytype() {
-    return mapMapAnytype;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_MAP_ANYTYPE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
-    this.mapMapAnytype = mapMapAnytype;
-  }
-
-  public AdditionalPropertiesClass anytype1(Object anytype1) {
-    this.anytype1 = anytype1;
-    return this;
-  }
-
-  /**
-   * Get anytype1
-   * @return anytype1
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ANYTYPE1)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Object getAnytype1() {
-    return anytype1;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ANYTYPE1)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAnytype1(Object anytype1) {
-    this.anytype1 = anytype1;
-  }
-
-  public AdditionalPropertiesClass anytype2(Object anytype2) {
-    this.anytype2 = anytype2;
-    return this;
-  }
-
-  /**
-   * Get anytype2
-   * @return anytype2
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ANYTYPE2)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Object getAnytype2() {
-    return anytype2;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ANYTYPE2)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAnytype2(Object anytype2) {
-    this.anytype2 = anytype2;
-  }
-
-  public AdditionalPropertiesClass anytype3(Object anytype3) {
-    this.anytype3 = anytype3;
-    return this;
-  }
-
-  /**
-   * Get anytype3
-   * @return anytype3
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ANYTYPE3)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Object getAnytype3() {
-    return anytype3;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ANYTYPE3)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAnytype3(Object anytype3) {
-    this.anytype3 = anytype3;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    /**
+     * Get mapInteger
+     * @return mapInteger
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Integer> getMapInteger() {
+        return mapInteger;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    @JsonProperty(JSON_PROPERTY_MAP_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapInteger(Map<String, Integer> mapInteger) {
+        this.mapInteger = mapInteger;
     }
-    AdditionalPropertiesClass additionalPropertiesClass = (AdditionalPropertiesClass) o;
-    return Objects.equals(this.mapString, additionalPropertiesClass.mapString) &&
-        Objects.equals(this.mapNumber, additionalPropertiesClass.mapNumber) &&
-        Objects.equals(this.mapInteger, additionalPropertiesClass.mapInteger) &&
-        Objects.equals(this.mapBoolean, additionalPropertiesClass.mapBoolean) &&
-        Objects.equals(this.mapArrayInteger, additionalPropertiesClass.mapArrayInteger) &&
-        Objects.equals(this.mapArrayAnytype, additionalPropertiesClass.mapArrayAnytype) &&
-        Objects.equals(this.mapMapString, additionalPropertiesClass.mapMapString) &&
-        Objects.equals(this.mapMapAnytype, additionalPropertiesClass.mapMapAnytype) &&
-        Objects.equals(this.anytype1, additionalPropertiesClass.anytype1) &&
-        Objects.equals(this.anytype2, additionalPropertiesClass.anytype2) &&
-        Objects.equals(this.anytype3, additionalPropertiesClass.anytype3);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(mapString, mapNumber, mapInteger, mapBoolean, mapArrayInteger, mapArrayAnytype, mapMapString, mapMapAnytype, anytype1, anytype2, anytype3);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesClass {\n");
-    sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
-    sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
-    sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
-    sb.append("    mapBoolean: ").append(toIndentedString(mapBoolean)).append("\n");
-    sb.append("    mapArrayInteger: ").append(toIndentedString(mapArrayInteger)).append("\n");
-    sb.append("    mapArrayAnytype: ").append(toIndentedString(mapArrayAnytype)).append("\n");
-    sb.append("    mapMapString: ").append(toIndentedString(mapMapString)).append("\n");
-    sb.append("    mapMapAnytype: ").append(toIndentedString(mapMapAnytype)).append("\n");
-    sb.append("    anytype1: ").append(toIndentedString(anytype1)).append("\n");
-    sb.append("    anytype2: ").append(toIndentedString(anytype2)).append("\n");
-    sb.append("    anytype3: ").append(toIndentedString(anytype3)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    public AdditionalPropertiesClass mapBoolean(Map<String, Boolean> mapBoolean) {
+        this.mapBoolean = mapBoolean;
+        return this;
     }
-    return o.toString().replace("\n", "\n    ");
+
+    public AdditionalPropertiesClass putMapBooleanItem(String key, Boolean mapBooleanItem) {
+        if (this.mapBoolean == null) {
+            this.mapBoolean = new HashMap<String, Boolean>();
+        }
+        this.mapBoolean.put(key, mapBooleanItem);
+        return this;
   }
 
+    /**
+     * Get mapBoolean
+     * @return mapBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Boolean> getMapBoolean() {
+        return mapBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapBoolean(Map<String, Boolean> mapBoolean) {
+        this.mapBoolean = mapBoolean;
+    }
+
+    public AdditionalPropertiesClass mapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
+        this.mapArrayInteger = mapArrayInteger;
+        return this;
+    }
+
+    public AdditionalPropertiesClass putMapArrayIntegerItem(String key, List<Integer> mapArrayIntegerItem) {
+        if (this.mapArrayInteger == null) {
+            this.mapArrayInteger = new HashMap<String, List<Integer>>();
+        }
+        this.mapArrayInteger.put(key, mapArrayIntegerItem);
+        return this;
+  }
+
+    /**
+     * Get mapArrayInteger
+     * @return mapArrayInteger
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_ARRAY_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, List<Integer>> getMapArrayInteger() {
+        return mapArrayInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_ARRAY_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
+        this.mapArrayInteger = mapArrayInteger;
+    }
+
+    public AdditionalPropertiesClass mapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
+        this.mapArrayAnytype = mapArrayAnytype;
+        return this;
+    }
+
+    public AdditionalPropertiesClass putMapArrayAnytypeItem(String key, List<Object> mapArrayAnytypeItem) {
+        if (this.mapArrayAnytype == null) {
+            this.mapArrayAnytype = new HashMap<String, List<Object>>();
+        }
+        this.mapArrayAnytype.put(key, mapArrayAnytypeItem);
+        return this;
+  }
+
+    /**
+     * Get mapArrayAnytype
+     * @return mapArrayAnytype
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_ARRAY_ANYTYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, List<Object>> getMapArrayAnytype() {
+        return mapArrayAnytype;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_ARRAY_ANYTYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
+        this.mapArrayAnytype = mapArrayAnytype;
+    }
+
+    public AdditionalPropertiesClass mapMapString(Map<String, Map<String, String>> mapMapString) {
+        this.mapMapString = mapMapString;
+        return this;
+    }
+
+    public AdditionalPropertiesClass putMapMapStringItem(String key, Map<String, String> mapMapStringItem) {
+        if (this.mapMapString == null) {
+            this.mapMapString = new HashMap<String, Map<String, String>>();
+        }
+        this.mapMapString.put(key, mapMapStringItem);
+        return this;
+  }
+
+    /**
+     * Get mapMapString
+     * @return mapMapString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_MAP_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Map<String, String>> getMapMapString() {
+        return mapMapString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_MAP_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapMapString(Map<String, Map<String, String>> mapMapString) {
+        this.mapMapString = mapMapString;
+    }
+
+    public AdditionalPropertiesClass mapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
+        this.mapMapAnytype = mapMapAnytype;
+        return this;
+    }
+
+    public AdditionalPropertiesClass putMapMapAnytypeItem(String key, Map<String, Object> mapMapAnytypeItem) {
+        if (this.mapMapAnytype == null) {
+            this.mapMapAnytype = new HashMap<String, Map<String, Object>>();
+        }
+        this.mapMapAnytype.put(key, mapMapAnytypeItem);
+        return this;
+  }
+
+    /**
+     * Get mapMapAnytype
+     * @return mapMapAnytype
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_MAP_ANYTYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Map<String, Object>> getMapMapAnytype() {
+        return mapMapAnytype;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_MAP_ANYTYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
+        this.mapMapAnytype = mapMapAnytype;
+    }
+
+    public AdditionalPropertiesClass anytype1(Object anytype1) {
+        this.anytype1 = anytype1;
+        return this;
+    }
+
+    /**
+     * Get anytype1
+     * @return anytype1
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ANYTYPE1)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Object getAnytype1() {
+        return anytype1;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ANYTYPE1)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAnytype1(Object anytype1) {
+        this.anytype1 = anytype1;
+    }
+
+    public AdditionalPropertiesClass anytype2(Object anytype2) {
+        this.anytype2 = anytype2;
+        return this;
+    }
+
+    /**
+     * Get anytype2
+     * @return anytype2
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ANYTYPE2)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Object getAnytype2() {
+        return anytype2;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ANYTYPE2)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAnytype2(Object anytype2) {
+        this.anytype2 = anytype2;
+    }
+
+    public AdditionalPropertiesClass anytype3(Object anytype3) {
+        this.anytype3 = anytype3;
+        return this;
+    }
+
+    /**
+     * Get anytype3
+     * @return anytype3
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ANYTYPE3)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Object getAnytype3() {
+        return anytype3;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ANYTYPE3)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAnytype3(Object anytype3) {
+        this.anytype3 = anytype3;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesClass additionalPropertiesClass = (AdditionalPropertiesClass) o;
+        return Objects.equals(this.mapString, additionalPropertiesClass.mapString) &&
+            Objects.equals(this.mapNumber, additionalPropertiesClass.mapNumber) &&
+            Objects.equals(this.mapInteger, additionalPropertiesClass.mapInteger) &&
+            Objects.equals(this.mapBoolean, additionalPropertiesClass.mapBoolean) &&
+            Objects.equals(this.mapArrayInteger, additionalPropertiesClass.mapArrayInteger) &&
+            Objects.equals(this.mapArrayAnytype, additionalPropertiesClass.mapArrayAnytype) &&
+            Objects.equals(this.mapMapString, additionalPropertiesClass.mapMapString) &&
+            Objects.equals(this.mapMapAnytype, additionalPropertiesClass.mapMapAnytype) &&
+            Objects.equals(this.anytype1, additionalPropertiesClass.anytype1) &&
+            Objects.equals(this.anytype2, additionalPropertiesClass.anytype2) &&
+            Objects.equals(this.anytype3, additionalPropertiesClass.anytype3);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mapString, mapNumber, mapInteger, mapBoolean, mapArrayInteger, mapArrayAnytype, mapMapString, mapMapAnytype, anytype1, anytype2, anytype3);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesClass {\n");
+        sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
+        sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
+        sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
+        sb.append("    mapBoolean: ").append(toIndentedString(mapBoolean)).append("\n");
+        sb.append("    mapArrayInteger: ").append(toIndentedString(mapArrayInteger)).append("\n");
+        sb.append("    mapArrayAnytype: ").append(toIndentedString(mapArrayAnytype)).append("\n");
+        sb.append("    mapMapString: ").append(toIndentedString(mapMapString)).append("\n");
+        sb.append("    mapMapAnytype: ").append(toIndentedString(mapMapAnytype)).append("\n");
+        sb.append("    anytype1: ").append(toIndentedString(anytype1)).append("\n");
+        sb.append("    anytype2: ").append(toIndentedString(anytype2)).append("\n");
+        sb.append("    anytype3: ").append(toIndentedString(anytype3)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5d6f4bcec0f..1e1c1f20731 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesInteger extends HashMap<String, Integer> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesInteger name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesInteger() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesInteger name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesInteger additionalPropertiesInteger = (AdditionalPropertiesInteger) o;
-    return Objects.equals(this.name, additionalPropertiesInteger.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesInteger {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesInteger additionalPropertiesInteger = (AdditionalPropertiesInteger) o;
+        return Objects.equals(this.name, additionalPropertiesInteger.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesInteger {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 88dfc96af1b..972cb4ae44d 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -36,69 +36,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesNumber name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesNumber() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesNumber name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesNumber additionalPropertiesNumber = (AdditionalPropertiesNumber) o;
-    return Objects.equals(this.name, additionalPropertiesNumber.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesNumber {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesNumber additionalPropertiesNumber = (AdditionalPropertiesNumber) o;
+        return Objects.equals(this.name, additionalPropertiesNumber.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesNumber {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 393746a2f1d..1c3fe0f8626 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesObject extends HashMap<String, Map> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesObject name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesObject() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesObject name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesObject additionalPropertiesObject = (AdditionalPropertiesObject) o;
-    return Objects.equals(this.name, additionalPropertiesObject.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesObject {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesObject additionalPropertiesObject = (AdditionalPropertiesObject) o;
+        return Objects.equals(this.name, additionalPropertiesObject.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesObject {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index cefd74bd15d..732a70109db 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class AdditionalPropertiesString extends HashMap<String, String> {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public AdditionalPropertiesString name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public AdditionalPropertiesString() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public AdditionalPropertiesString name(String name) {
+        this.name = name;
+        return this;
     }
-    AdditionalPropertiesString additionalPropertiesString = (AdditionalPropertiesString) o;
-    return Objects.equals(this.name, additionalPropertiesString.name) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class AdditionalPropertiesString {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        AdditionalPropertiesString additionalPropertiesString = (AdditionalPropertiesString) o;
+        return Objects.equals(this.name, additionalPropertiesString.name) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class AdditionalPropertiesString {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Animal.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Animal.java
index 5225322d5c8..9920cdfda2d 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Animal.java
@@ -43,95 +43,97 @@ import javax.annotation.Generated;
 
 @Introspected
 public class Animal {
-  public static final String JSON_PROPERTY_CLASS_NAME = "className";
-  protected String className;
+    public static final String JSON_PROPERTY_CLASS_NAME = "className";
+    protected String className;
 
-  public static final String JSON_PROPERTY_COLOR = "color";
-  private String color = "red";
+    public static final String JSON_PROPERTY_COLOR = "color";
+    private String color = "red";
 
-  public Animal className(String className) {
-    this.className = className;
-    return this;
-  }
-
-  /**
-   * Get className
-   * @return className
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_CLASS_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public String getClassName() {
-    return className;
-  }
-
-  @JsonProperty(JSON_PROPERTY_CLASS_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setClassName(String className) {
-    this.className = className;
-  }
-
-  public Animal color(String color) {
-    this.color = color;
-    return this;
-  }
-
-  /**
-   * Get color
-   * @return color
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_COLOR)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getColor() {
-    return color;
-  }
-
-  @JsonProperty(JSON_PROPERTY_COLOR)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setColor(String color) {
-    this.color = color;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Animal() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Animal className(String className) {
+        this.className = className;
+        return this;
     }
-    Animal animal = (Animal) o;
-    return Objects.equals(this.className, animal.className) &&
-        Objects.equals(this.color, animal.color);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(className, color);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Animal {\n");
-    sb.append("    className: ").append(toIndentedString(className)).append("\n");
-    sb.append("    color: ").append(toIndentedString(color)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get className
+     * @return className
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_CLASS_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getClassName() {
+        return className;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CLASS_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setClassName(String className) {
+        this.className = className;
+    }
+
+    public Animal color(String color) {
+        this.color = color;
+        return this;
+    }
+
+    /**
+     * Get color
+     * @return color
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_COLOR)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getColor() {
+        return color;
+    }
+
+    @JsonProperty(JSON_PROPERTY_COLOR)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setColor(String color) {
+        this.color = color;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Animal animal = (Animal) o;
+        return Objects.equals(this.className, animal.className) &&
+            Objects.equals(this.color, animal.color);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(className, color);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Animal {\n");
+        sb.append("    className: ").append(toIndentedString(className)).append("\n");
+        sb.append("    color: ").append(toIndentedString(color)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 0388c7c5ae6..f8e35cafcb3 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -36,75 +36,77 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ArrayOfArrayOfNumberOnly {
-  public static final String JSON_PROPERTY_ARRAY_ARRAY_NUMBER = "ArrayArrayNumber";
-  private List<List<BigDecimal>> arrayArrayNumber = null;
+    public static final String JSON_PROPERTY_ARRAY_ARRAY_NUMBER = "ArrayArrayNumber";
+    private List<List<BigDecimal>> arrayArrayNumber = null;
 
-  public ArrayOfArrayOfNumberOnly arrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
-    this.arrayArrayNumber = arrayArrayNumber;
-    return this;
-  }
-
-  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
-    if (this.arrayArrayNumber == null) {
-      this.arrayArrayNumber = new ArrayList<List<BigDecimal>>();
+    public ArrayOfArrayOfNumberOnly() {
     }
-    this.arrayArrayNumber.add(arrayArrayNumberItem);
-    return this;
-  }
-
-  /**
-   * Get arrayArrayNumber
-   * @return arrayArrayNumber
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<List<BigDecimal>> getArrayArrayNumber() {
-    return arrayArrayNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
-    this.arrayArrayNumber = arrayArrayNumber;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ArrayOfArrayOfNumberOnly arrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+        this.arrayArrayNumber = arrayArrayNumber;
+        return this;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+        if (this.arrayArrayNumber == null) {
+            this.arrayArrayNumber = new ArrayList<List<BigDecimal>>();
+        }
+        this.arrayArrayNumber.add(arrayArrayNumberItem);
+        return this;
     }
-    ArrayOfArrayOfNumberOnly arrayOfArrayOfNumberOnly = (ArrayOfArrayOfNumberOnly) o;
-    return Objects.equals(this.arrayArrayNumber, arrayOfArrayOfNumberOnly.arrayArrayNumber);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(arrayArrayNumber);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get arrayArrayNumber
+     * @return arrayArrayNumber
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<List<BigDecimal>> getArrayArrayNumber() {
+        return arrayArrayNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+        this.arrayArrayNumber = arrayArrayNumber;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ArrayOfArrayOfNumberOnly arrayOfArrayOfNumberOnly = (ArrayOfArrayOfNumberOnly) o;
+        return Objects.equals(this.arrayArrayNumber, arrayOfArrayOfNumberOnly.arrayArrayNumber);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(arrayArrayNumber);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ArrayOfArrayOfNumberOnly {\n");
+        sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 721d788bd90..0c81db857ce 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -36,75 +36,77 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ArrayOfNumberOnly {
-  public static final String JSON_PROPERTY_ARRAY_NUMBER = "ArrayNumber";
-  private List<BigDecimal> arrayNumber = null;
+    public static final String JSON_PROPERTY_ARRAY_NUMBER = "ArrayNumber";
+    private List<BigDecimal> arrayNumber = null;
 
-  public ArrayOfNumberOnly arrayNumber(List<BigDecimal> arrayNumber) {
-    this.arrayNumber = arrayNumber;
-    return this;
-  }
-
-  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
-    if (this.arrayNumber == null) {
-      this.arrayNumber = new ArrayList<BigDecimal>();
+    public ArrayOfNumberOnly() {
     }
-    this.arrayNumber.add(arrayNumberItem);
-    return this;
-  }
-
-  /**
-   * Get arrayNumber
-   * @return arrayNumber
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<BigDecimal> getArrayNumber() {
-    return arrayNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setArrayNumber(List<BigDecimal> arrayNumber) {
-    this.arrayNumber = arrayNumber;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ArrayOfNumberOnly arrayNumber(List<BigDecimal> arrayNumber) {
+        this.arrayNumber = arrayNumber;
+        return this;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+        if (this.arrayNumber == null) {
+            this.arrayNumber = new ArrayList<BigDecimal>();
+        }
+        this.arrayNumber.add(arrayNumberItem);
+        return this;
     }
-    ArrayOfNumberOnly arrayOfNumberOnly = (ArrayOfNumberOnly) o;
-    return Objects.equals(this.arrayNumber, arrayOfNumberOnly.arrayNumber);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(arrayNumber);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ArrayOfNumberOnly {\n");
-    sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get arrayNumber
+     * @return arrayNumber
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<BigDecimal> getArrayNumber() {
+        return arrayNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setArrayNumber(List<BigDecimal> arrayNumber) {
+        this.arrayNumber = arrayNumber;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ArrayOfNumberOnly arrayOfNumberOnly = (ArrayOfNumberOnly) o;
+        return Objects.equals(this.arrayNumber, arrayOfNumberOnly.arrayNumber);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(arrayNumber);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ArrayOfNumberOnly {\n");
+        sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayTest.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayTest.java
index 07578136d1e..91a150fa94d 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ArrayTest.java
@@ -38,147 +38,149 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ArrayTest {
-  public static final String JSON_PROPERTY_ARRAY_OF_STRING = "array_of_string";
-  private List<String> arrayOfString = null;
+    public static final String JSON_PROPERTY_ARRAY_OF_STRING = "array_of_string";
+    private List<String> arrayOfString = null;
 
-  public static final String JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER = "array_array_of_integer";
-  private List<List<Long>> arrayArrayOfInteger = null;
+    public static final String JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER = "array_array_of_integer";
+    private List<List<Long>> arrayArrayOfInteger = null;
 
-  public static final String JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL = "array_array_of_model";
-  private List<List<ReadOnlyFirst>> arrayArrayOfModel = null;
+    public static final String JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL = "array_array_of_model";
+    private List<List<ReadOnlyFirst>> arrayArrayOfModel = null;
 
-  public ArrayTest arrayOfString(List<String> arrayOfString) {
-    this.arrayOfString = arrayOfString;
-    return this;
-  }
-
-  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
-    if (this.arrayOfString == null) {
-      this.arrayOfString = new ArrayList<String>();
+    public ArrayTest() {
     }
-    this.arrayOfString.add(arrayOfStringItem);
-    return this;
-  }
-
-  /**
-   * Get arrayOfString
-   * @return arrayOfString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_OF_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<String> getArrayOfString() {
-    return arrayOfString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_OF_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setArrayOfString(List<String> arrayOfString) {
-    this.arrayOfString = arrayOfString;
-  }
-
-  public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
-    this.arrayArrayOfInteger = arrayArrayOfInteger;
-    return this;
-  }
-
-  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
-    if (this.arrayArrayOfInteger == null) {
-      this.arrayArrayOfInteger = new ArrayList<List<Long>>();
+    public ArrayTest arrayOfString(List<String> arrayOfString) {
+        this.arrayOfString = arrayOfString;
+        return this;
     }
-    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
-    return this;
-  }
 
-  /**
-   * Get arrayArrayOfInteger
-   * @return arrayArrayOfInteger
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<List<Long>> getArrayArrayOfInteger() {
-    return arrayArrayOfInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
-    this.arrayArrayOfInteger = arrayArrayOfInteger;
-  }
-
-  public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
-    this.arrayArrayOfModel = arrayArrayOfModel;
-    return this;
-  }
-
-  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
-    if (this.arrayArrayOfModel == null) {
-      this.arrayArrayOfModel = new ArrayList<List<ReadOnlyFirst>>();
+    public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+        if (this.arrayOfString == null) {
+            this.arrayOfString = new ArrayList<String>();
+        }
+        this.arrayOfString.add(arrayOfStringItem);
+        return this;
     }
-    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
-    return this;
-  }
 
-  /**
-   * Get arrayArrayOfModel
-   * @return arrayArrayOfModel
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
-    return arrayArrayOfModel;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
-    this.arrayArrayOfModel = arrayArrayOfModel;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    /**
+     * Get arrayOfString
+     * @return arrayOfString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_OF_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<String> getArrayOfString() {
+        return arrayOfString;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_OF_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setArrayOfString(List<String> arrayOfString) {
+        this.arrayOfString = arrayOfString;
     }
-    ArrayTest arrayTest = (ArrayTest) o;
-    return Objects.equals(this.arrayOfString, arrayTest.arrayOfString) &&
-        Objects.equals(this.arrayArrayOfInteger, arrayTest.arrayArrayOfInteger) &&
-        Objects.equals(this.arrayArrayOfModel, arrayTest.arrayArrayOfModel);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(arrayOfString, arrayArrayOfInteger, arrayArrayOfModel);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ArrayTest {\n");
-    sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
-    sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
-    sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+        this.arrayArrayOfInteger = arrayArrayOfInteger;
+        return this;
+    }
+
+    public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+        if (this.arrayArrayOfInteger == null) {
+            this.arrayArrayOfInteger = new ArrayList<List<Long>>();
+        }
+        this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+        return this;
+    }
+
+    /**
+     * Get arrayArrayOfInteger
+     * @return arrayArrayOfInteger
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<List<Long>> getArrayArrayOfInteger() {
+        return arrayArrayOfInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+        this.arrayArrayOfInteger = arrayArrayOfInteger;
+    }
+
+    public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+        this.arrayArrayOfModel = arrayArrayOfModel;
+        return this;
+    }
+
+    public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+        if (this.arrayArrayOfModel == null) {
+            this.arrayArrayOfModel = new ArrayList<List<ReadOnlyFirst>>();
+        }
+        this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+        return this;
+    }
+
+    /**
+     * Get arrayArrayOfModel
+     * @return arrayArrayOfModel
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
+        return arrayArrayOfModel;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_ARRAY_OF_MODEL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+        this.arrayArrayOfModel = arrayArrayOfModel;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ArrayTest arrayTest = (ArrayTest) o;
+        return Objects.equals(this.arrayOfString, arrayTest.arrayOfString) &&
+            Objects.equals(this.arrayArrayOfInteger, arrayTest.arrayArrayOfInteger) &&
+            Objects.equals(this.arrayArrayOfModel, arrayTest.arrayArrayOfModel);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(arrayOfString, arrayArrayOfInteger, arrayArrayOfModel);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ArrayTest {\n");
+        sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
+        sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
+        sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCat.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCat.java
index badc9384314..732353de97d 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCat.java
@@ -35,104 +35,107 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class BigCat extends Cat {
-  /**
-   * Gets or Sets kind
-   */
-  public enum KindEnum {
-    LIONS("lions"),
-    TIGERS("tigers"),
-    LEOPARDS("leopards"),
-    JAGUARS("jaguars");
+    /**
+     * Gets or Sets kind
+     */
+    public enum KindEnum {
+        LIONS("lions"),
+        TIGERS("tigers"),
+        LEOPARDS("leopards"),
+        JAGUARS("jaguars");
 
-    private String value;
+        private String value;
 
-    KindEnum(String value) {
-      this.value = value;
+        KindEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static KindEnum fromValue(String value) {
+            for (KindEnum b : KindEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_KIND = "kind";
+    private KindEnum kind;
+
+    public BigCat() {
+        super();
+    }
+    public BigCat kind(KindEnum kind) {
+        this.kind = kind;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    /**
+     * Get kind
+     * @return kind
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_KIND)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public KindEnum getKind() {
+        return kind;
+    }
+
+    @JsonProperty(JSON_PROPERTY_KIND)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setKind(KindEnum kind) {
+        this.kind = kind;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        BigCat bigCat = (BigCat) o;
+        return Objects.equals(this.kind, bigCat.kind) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(kind, super.hashCode());
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class BigCat {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static KindEnum fromValue(String value) {
-      for (KindEnum b : KindEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_KIND = "kind";
-  private KindEnum kind;
-
-  public BigCat kind(KindEnum kind) {
-    this.kind = kind;
-    return this;
-  }
-
-  /**
-   * Get kind
-   * @return kind
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_KIND)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public KindEnum getKind() {
-    return kind;
-  }
-
-  @JsonProperty(JSON_PROPERTY_KIND)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setKind(KindEnum kind) {
-    this.kind = kind;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    BigCat bigCat = (BigCat) o;
-    return Objects.equals(this.kind, bigCat.kind) &&
-        super.equals(o);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(kind, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class BigCat {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCatAllOf.java
index cdc464b8e9d..f19a8935510 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -33,102 +33,104 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class BigCatAllOf {
-  /**
-   * Gets or Sets kind
-   */
-  public enum KindEnum {
-    LIONS("lions"),
-    TIGERS("tigers"),
-    LEOPARDS("leopards"),
-    JAGUARS("jaguars");
+    /**
+     * Gets or Sets kind
+     */
+    public enum KindEnum {
+        LIONS("lions"),
+        TIGERS("tigers"),
+        LEOPARDS("leopards"),
+        JAGUARS("jaguars");
 
-    private String value;
+        private String value;
 
-    KindEnum(String value) {
-      this.value = value;
+        KindEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static KindEnum fromValue(String value) {
+            for (KindEnum b : KindEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_KIND = "kind";
+    private KindEnum kind;
+
+    public BigCatAllOf() {
+    }
+    public BigCatAllOf kind(KindEnum kind) {
+        this.kind = kind;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    /**
+     * Get kind
+     * @return kind
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_KIND)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public KindEnum getKind() {
+        return kind;
+    }
+
+    @JsonProperty(JSON_PROPERTY_KIND)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setKind(KindEnum kind) {
+        this.kind = kind;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        BigCatAllOf bigCatAllOf = (BigCatAllOf) o;
+        return Objects.equals(this.kind, bigCatAllOf.kind);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(kind);
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class BigCatAllOf {\n");
+        sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static KindEnum fromValue(String value) {
-      for (KindEnum b : KindEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_KIND = "kind";
-  private KindEnum kind;
-
-  public BigCatAllOf kind(KindEnum kind) {
-    this.kind = kind;
-    return this;
-  }
-
-  /**
-   * Get kind
-   * @return kind
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_KIND)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public KindEnum getKind() {
-    return kind;
-  }
-
-  @JsonProperty(JSON_PROPERTY_KIND)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setKind(KindEnum kind) {
-    this.kind = kind;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    BigCatAllOf bigCatAllOf = (BigCatAllOf) o;
-    return Objects.equals(this.kind, bigCatAllOf.kind);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(kind);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class BigCatAllOf {\n");
-    sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Capitalization.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Capitalization.java
index dd01342a8a6..312e637f866 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Capitalization.java
@@ -38,207 +38,209 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Capitalization {
-  public static final String JSON_PROPERTY_SMALL_CAMEL = "smallCamel";
-  private String smallCamel;
+    public static final String JSON_PROPERTY_SMALL_CAMEL = "smallCamel";
+    private String smallCamel;
 
-  public static final String JSON_PROPERTY_CAPITAL_CAMEL = "CapitalCamel";
-  private String capitalCamel;
+    public static final String JSON_PROPERTY_CAPITAL_CAMEL = "CapitalCamel";
+    private String capitalCamel;
 
-  public static final String JSON_PROPERTY_SMALL_SNAKE = "small_Snake";
-  private String smallSnake;
+    public static final String JSON_PROPERTY_SMALL_SNAKE = "small_Snake";
+    private String smallSnake;
 
-  public static final String JSON_PROPERTY_CAPITAL_SNAKE = "Capital_Snake";
-  private String capitalSnake;
+    public static final String JSON_PROPERTY_CAPITAL_SNAKE = "Capital_Snake";
+    private String capitalSnake;
 
-  public static final String JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS = "SCA_ETH_Flow_Points";
-  private String scAETHFlowPoints;
+    public static final String JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS = "SCA_ETH_Flow_Points";
+    private String scAETHFlowPoints;
 
-  public static final String JSON_PROPERTY_A_T_T_N_A_M_E = "ATT_NAME";
-  private String ATT_NAME;
+    public static final String JSON_PROPERTY_A_T_T_N_A_M_E = "ATT_NAME";
+    private String ATT_NAME;
 
-  public Capitalization smallCamel(String smallCamel) {
-    this.smallCamel = smallCamel;
-    return this;
-  }
-
-  /**
-   * Get smallCamel
-   * @return smallCamel
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_SMALL_CAMEL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getSmallCamel() {
-    return smallCamel;
-  }
-
-  @JsonProperty(JSON_PROPERTY_SMALL_CAMEL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setSmallCamel(String smallCamel) {
-    this.smallCamel = smallCamel;
-  }
-
-  public Capitalization capitalCamel(String capitalCamel) {
-    this.capitalCamel = capitalCamel;
-    return this;
-  }
-
-  /**
-   * Get capitalCamel
-   * @return capitalCamel
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_CAPITAL_CAMEL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getCapitalCamel() {
-    return capitalCamel;
-  }
-
-  @JsonProperty(JSON_PROPERTY_CAPITAL_CAMEL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setCapitalCamel(String capitalCamel) {
-    this.capitalCamel = capitalCamel;
-  }
-
-  public Capitalization smallSnake(String smallSnake) {
-    this.smallSnake = smallSnake;
-    return this;
-  }
-
-  /**
-   * Get smallSnake
-   * @return smallSnake
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_SMALL_SNAKE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getSmallSnake() {
-    return smallSnake;
-  }
-
-  @JsonProperty(JSON_PROPERTY_SMALL_SNAKE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setSmallSnake(String smallSnake) {
-    this.smallSnake = smallSnake;
-  }
-
-  public Capitalization capitalSnake(String capitalSnake) {
-    this.capitalSnake = capitalSnake;
-    return this;
-  }
-
-  /**
-   * Get capitalSnake
-   * @return capitalSnake
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_CAPITAL_SNAKE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getCapitalSnake() {
-    return capitalSnake;
-  }
-
-  @JsonProperty(JSON_PROPERTY_CAPITAL_SNAKE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setCapitalSnake(String capitalSnake) {
-    this.capitalSnake = capitalSnake;
-  }
-
-  public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
-    this.scAETHFlowPoints = scAETHFlowPoints;
-    return this;
-  }
-
-  /**
-   * Get scAETHFlowPoints
-   * @return scAETHFlowPoints
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getScAETHFlowPoints() {
-    return scAETHFlowPoints;
-  }
-
-  @JsonProperty(JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setScAETHFlowPoints(String scAETHFlowPoints) {
-    this.scAETHFlowPoints = scAETHFlowPoints;
-  }
-
-  public Capitalization ATT_NAME(String ATT_NAME) {
-    this.ATT_NAME = ATT_NAME;
-    return this;
-  }
-
-  /**
-   * Name of the pet 
-   * @return ATT_NAME
-   **/
-  @Nullable
-  @ApiModelProperty(value = "Name of the pet ")
-  @JsonProperty(JSON_PROPERTY_A_T_T_N_A_M_E)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getATTNAME() {
-    return ATT_NAME;
-  }
-
-  @JsonProperty(JSON_PROPERTY_A_T_T_N_A_M_E)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setATTNAME(String ATT_NAME) {
-    this.ATT_NAME = ATT_NAME;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Capitalization() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Capitalization smallCamel(String smallCamel) {
+        this.smallCamel = smallCamel;
+        return this;
     }
-    Capitalization capitalization = (Capitalization) o;
-    return Objects.equals(this.smallCamel, capitalization.smallCamel) &&
-        Objects.equals(this.capitalCamel, capitalization.capitalCamel) &&
-        Objects.equals(this.smallSnake, capitalization.smallSnake) &&
-        Objects.equals(this.capitalSnake, capitalization.capitalSnake) &&
-        Objects.equals(this.scAETHFlowPoints, capitalization.scAETHFlowPoints) &&
-        Objects.equals(this.ATT_NAME, capitalization.ATT_NAME);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(smallCamel, capitalCamel, smallSnake, capitalSnake, scAETHFlowPoints, ATT_NAME);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Capitalization {\n");
-    sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
-    sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
-    sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
-    sb.append("    capitalSnake: ").append(toIndentedString(capitalSnake)).append("\n");
-    sb.append("    scAETHFlowPoints: ").append(toIndentedString(scAETHFlowPoints)).append("\n");
-    sb.append("    ATT_NAME: ").append(toIndentedString(ATT_NAME)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get smallCamel
+     * @return smallCamel
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_SMALL_CAMEL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getSmallCamel() {
+        return smallCamel;
+    }
+
+    @JsonProperty(JSON_PROPERTY_SMALL_CAMEL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setSmallCamel(String smallCamel) {
+        this.smallCamel = smallCamel;
+    }
+
+    public Capitalization capitalCamel(String capitalCamel) {
+        this.capitalCamel = capitalCamel;
+        return this;
+    }
+
+    /**
+     * Get capitalCamel
+     * @return capitalCamel
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CAPITAL_CAMEL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getCapitalCamel() {
+        return capitalCamel;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CAPITAL_CAMEL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setCapitalCamel(String capitalCamel) {
+        this.capitalCamel = capitalCamel;
+    }
+
+    public Capitalization smallSnake(String smallSnake) {
+        this.smallSnake = smallSnake;
+        return this;
+    }
+
+    /**
+     * Get smallSnake
+     * @return smallSnake
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_SMALL_SNAKE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getSmallSnake() {
+        return smallSnake;
+    }
+
+    @JsonProperty(JSON_PROPERTY_SMALL_SNAKE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setSmallSnake(String smallSnake) {
+        this.smallSnake = smallSnake;
+    }
+
+    public Capitalization capitalSnake(String capitalSnake) {
+        this.capitalSnake = capitalSnake;
+        return this;
+    }
+
+    /**
+     * Get capitalSnake
+     * @return capitalSnake
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CAPITAL_SNAKE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getCapitalSnake() {
+        return capitalSnake;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CAPITAL_SNAKE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setCapitalSnake(String capitalSnake) {
+        this.capitalSnake = capitalSnake;
+    }
+
+    public Capitalization scAETHFlowPoints(String scAETHFlowPoints) {
+        this.scAETHFlowPoints = scAETHFlowPoints;
+        return this;
+    }
+
+    /**
+     * Get scAETHFlowPoints
+     * @return scAETHFlowPoints
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getScAETHFlowPoints() {
+        return scAETHFlowPoints;
+    }
+
+    @JsonProperty(JSON_PROPERTY_SC_A_E_T_H_FLOW_POINTS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setScAETHFlowPoints(String scAETHFlowPoints) {
+        this.scAETHFlowPoints = scAETHFlowPoints;
+    }
+
+    public Capitalization ATT_NAME(String ATT_NAME) {
+        this.ATT_NAME = ATT_NAME;
+        return this;
+    }
+
+    /**
+     * Name of the pet 
+     * @return ATT_NAME
+     **/
+    @Nullable
+    @ApiModelProperty(value = "Name of the pet ")
+    @JsonProperty(JSON_PROPERTY_A_T_T_N_A_M_E)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getATTNAME() {
+        return ATT_NAME;
+    }
+
+    @JsonProperty(JSON_PROPERTY_A_T_T_N_A_M_E)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setATTNAME(String ATT_NAME) {
+        this.ATT_NAME = ATT_NAME;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Capitalization capitalization = (Capitalization) o;
+        return Objects.equals(this.smallCamel, capitalization.smallCamel) &&
+            Objects.equals(this.capitalCamel, capitalization.capitalCamel) &&
+            Objects.equals(this.smallSnake, capitalization.smallSnake) &&
+            Objects.equals(this.capitalSnake, capitalization.capitalSnake) &&
+            Objects.equals(this.scAETHFlowPoints, capitalization.scAETHFlowPoints) &&
+            Objects.equals(this.ATT_NAME, capitalization.ATT_NAME);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(smallCamel, capitalCamel, smallSnake, capitalSnake, scAETHFlowPoints, ATT_NAME);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Capitalization {\n");
+        sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
+        sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
+        sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
+        sb.append("    capitalSnake: ").append(toIndentedString(capitalSnake)).append("\n");
+        sb.append("    scAETHFlowPoints: ").append(toIndentedString(scAETHFlowPoints)).append("\n");
+        sb.append("    ATT_NAME: ").append(toIndentedString(ATT_NAME)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Cat.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Cat.java
index 8f9fe12d884..817807f86d7 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Cat.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Cat extends Animal {
-  public static final String JSON_PROPERTY_DECLAWED = "declawed";
-  private Boolean declawed;
+    public static final String JSON_PROPERTY_DECLAWED = "declawed";
+    private Boolean declawed;
 
-  public Cat declawed(Boolean declawed) {
-    this.declawed = declawed;
-    return this;
-  }
-
-  /**
-   * Get declawed
-   * @return declawed
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_DECLAWED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getDeclawed() {
-    return declawed;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DECLAWED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setDeclawed(Boolean declawed) {
-    this.declawed = declawed;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Cat() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Cat declawed(Boolean declawed) {
+        this.declawed = declawed;
+        return this;
     }
-    Cat cat = (Cat) o;
-    return Objects.equals(this.declawed, cat.declawed) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(declawed, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Cat {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get declawed
+     * @return declawed
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_DECLAWED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getDeclawed() {
+        return declawed;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DECLAWED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setDeclawed(Boolean declawed) {
+        this.declawed = declawed;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Cat cat = (Cat) o;
+        return Objects.equals(this.declawed, cat.declawed) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(declawed, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Cat {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/CatAllOf.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/CatAllOf.java
index 4ee623d649b..6125a814c9b 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/CatAllOf.java
@@ -33,67 +33,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class CatAllOf {
-  public static final String JSON_PROPERTY_DECLAWED = "declawed";
-  private Boolean declawed;
+    public static final String JSON_PROPERTY_DECLAWED = "declawed";
+    private Boolean declawed;
 
-  public CatAllOf declawed(Boolean declawed) {
-    this.declawed = declawed;
-    return this;
-  }
-
-  /**
-   * Get declawed
-   * @return declawed
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_DECLAWED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getDeclawed() {
-    return declawed;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DECLAWED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setDeclawed(Boolean declawed) {
-    this.declawed = declawed;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public CatAllOf() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public CatAllOf declawed(Boolean declawed) {
+        this.declawed = declawed;
+        return this;
     }
-    CatAllOf catAllOf = (CatAllOf) o;
-    return Objects.equals(this.declawed, catAllOf.declawed);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(declawed);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class CatAllOf {\n");
-    sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get declawed
+     * @return declawed
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_DECLAWED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getDeclawed() {
+        return declawed;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DECLAWED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setDeclawed(Boolean declawed) {
+        this.declawed = declawed;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        CatAllOf catAllOf = (CatAllOf) o;
+        return Objects.equals(this.declawed, catAllOf.declawed);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(declawed);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class CatAllOf {\n");
+        sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Category.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Category.java
index 552c577d79a..88978ee639c 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Category.java
@@ -34,95 +34,97 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Category {
-  public static final String JSON_PROPERTY_ID = "id";
-  private Long id;
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
 
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name = "default-name";
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name = "default-name";
 
-  public Category id(Long id) {
-    this.id = id;
-    return this;
-  }
-
-  /**
-   * Get id
-   * @return id
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getId() {
-    return id;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setId(Long id) {
-    this.id = id;
-  }
-
-  public Category name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Category() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Category id(Long id) {
+        this.id = id;
+        return this;
     }
-    Category category = (Category) o;
-    return Objects.equals(this.id, category.id) &&
-        Objects.equals(this.name, category.name);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(id, name);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Category {\n");
-    sb.append("    id: ").append(toIndentedString(id)).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Category name(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get name
+     * @return name
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Category category = (Category) o;
+        return Objects.equals(this.id, category.id) &&
+            Objects.equals(this.name, category.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Category {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ClassModel.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ClassModel.java
index 2f94229b7e8..37dafc836ca 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ClassModel.java
@@ -34,67 +34,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ClassModel {
-  public static final String JSON_PROPERTY_PROPERTY_CLASS = "_class";
-  private String propertyClass;
+    public static final String JSON_PROPERTY_PROPERTY_CLASS = "_class";
+    private String propertyClass;
 
-  public ClassModel propertyClass(String propertyClass) {
-    this.propertyClass = propertyClass;
-    return this;
-  }
-
-  /**
-   * Get propertyClass
-   * @return propertyClass
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getPropertyClass() {
-    return propertyClass;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPropertyClass(String propertyClass) {
-    this.propertyClass = propertyClass;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ClassModel() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public ClassModel propertyClass(String propertyClass) {
+        this.propertyClass = propertyClass;
+        return this;
     }
-    ClassModel classModel = (ClassModel) o;
-    return Objects.equals(this.propertyClass, classModel.propertyClass);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(propertyClass);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ClassModel {\n");
-    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get propertyClass
+     * @return propertyClass
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPropertyClass() {
+        return propertyClass;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPropertyClass(String propertyClass) {
+        this.propertyClass = propertyClass;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ClassModel classModel = (ClassModel) o;
+        return Objects.equals(this.propertyClass, classModel.propertyClass);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(propertyClass);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ClassModel {\n");
+        sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Dog.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Dog.java
index 8bde5e0809e..53a7c64f13b 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Dog.java
@@ -35,69 +35,72 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Dog extends Animal {
-  public static final String JSON_PROPERTY_BREED = "breed";
-  private String breed;
+    public static final String JSON_PROPERTY_BREED = "breed";
+    private String breed;
 
-  public Dog breed(String breed) {
-    this.breed = breed;
-    return this;
-  }
-
-  /**
-   * Get breed
-   * @return breed
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BREED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getBreed() {
-    return breed;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BREED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setBreed(String breed) {
-    this.breed = breed;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Dog() {
+        super();
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Dog breed(String breed) {
+        this.breed = breed;
+        return this;
     }
-    Dog dog = (Dog) o;
-    return Objects.equals(this.breed, dog.breed) &&
-        super.equals(o);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(breed, super.hashCode());
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Dog {\n");
-    sb.append("    ").append(toIndentedString(super.toString())).append("\n");
-    sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get breed
+     * @return breed
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BREED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getBreed() {
+        return breed;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BREED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setBreed(String breed) {
+        this.breed = breed;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Dog dog = (Dog) o;
+        return Objects.equals(this.breed, dog.breed) &&
+            super.equals(o);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(breed, super.hashCode());
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Dog {\n");
+        sb.append("    ").append(toIndentedString(super.toString())).append("\n");
+        sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/DogAllOf.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/DogAllOf.java
index 51dec00ea10..3dba0d3bc20 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/DogAllOf.java
@@ -33,67 +33,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class DogAllOf {
-  public static final String JSON_PROPERTY_BREED = "breed";
-  private String breed;
+    public static final String JSON_PROPERTY_BREED = "breed";
+    private String breed;
 
-  public DogAllOf breed(String breed) {
-    this.breed = breed;
-    return this;
-  }
-
-  /**
-   * Get breed
-   * @return breed
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BREED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getBreed() {
-    return breed;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BREED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setBreed(String breed) {
-    this.breed = breed;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public DogAllOf() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public DogAllOf breed(String breed) {
+        this.breed = breed;
+        return this;
     }
-    DogAllOf dogAllOf = (DogAllOf) o;
-    return Objects.equals(this.breed, dogAllOf.breed);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(breed);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class DogAllOf {\n");
-    sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get breed
+     * @return breed
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BREED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getBreed() {
+        return breed;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BREED)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setBreed(String breed) {
+        this.breed = breed;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        DogAllOf dogAllOf = (DogAllOf) o;
+        return Objects.equals(this.breed, dogAllOf.breed);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(breed);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class DogAllOf {\n");
+        sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumArrays.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumArrays.java
index c71f5edf0c4..9c72665e822 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumArrays.java
@@ -36,169 +36,171 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class EnumArrays {
-  /**
-   * Gets or Sets justSymbol
-   */
-  public enum JustSymbolEnum {
-    GREATER_THAN_OR_EQUAL_TO(">="),
-    DOLLAR("$");
+    /**
+     * Gets or Sets justSymbol
+     */
+    public enum JustSymbolEnum {
+        GREATER_THAN_OR_EQUAL_TO(">="),
+        DOLLAR("$");
 
-    private String value;
+        private String value;
 
-    JustSymbolEnum(String value) {
-      this.value = value;
+        JustSymbolEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static JustSymbolEnum fromValue(String value) {
+            for (JustSymbolEnum b : JustSymbolEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_JUST_SYMBOL = "just_symbol";
+    private JustSymbolEnum justSymbol;
+
+    /**
+     * Gets or Sets arrayEnum
+     */
+    public enum ArrayEnumEnum {
+        FISH("fish"),
+        CRAB("crab");
+
+        private String value;
+
+        ArrayEnumEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static ArrayEnumEnum fromValue(String value) {
+            for (ArrayEnumEnum b : ArrayEnumEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_ARRAY_ENUM = "array_enum";
+    private List<ArrayEnumEnum> arrayEnum = null;
+
+    public EnumArrays() {
+    }
+    public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
+        this.justSymbol = justSymbol;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    /**
+     * Get justSymbol
+     * @return justSymbol
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_JUST_SYMBOL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public JustSymbolEnum getJustSymbol() {
+        return justSymbol;
+    }
+
+    @JsonProperty(JSON_PROPERTY_JUST_SYMBOL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setJustSymbol(JustSymbolEnum justSymbol) {
+        this.justSymbol = justSymbol;
+    }
+
+    public EnumArrays arrayEnum(List<ArrayEnumEnum> arrayEnum) {
+        this.arrayEnum = arrayEnum;
+        return this;
+    }
+
+    public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+        if (this.arrayEnum == null) {
+            this.arrayEnum = new ArrayList<ArrayEnumEnum>();
+        }
+        this.arrayEnum.add(arrayEnumItem);
+        return this;
+    }
+
+    /**
+     * Get arrayEnum
+     * @return arrayEnum
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_ENUM)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<ArrayEnumEnum> getArrayEnum() {
+        return arrayEnum;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_ENUM)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
+        this.arrayEnum = arrayEnum;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        EnumArrays enumArrays = (EnumArrays) o;
+        return Objects.equals(this.justSymbol, enumArrays.justSymbol) &&
+            Objects.equals(this.arrayEnum, enumArrays.arrayEnum);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(justSymbol, arrayEnum);
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class EnumArrays {\n");
+        sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
+        sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static JustSymbolEnum fromValue(String value) {
-      for (JustSymbolEnum b : JustSymbolEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_JUST_SYMBOL = "just_symbol";
-  private JustSymbolEnum justSymbol;
-
-  /**
-   * Gets or Sets arrayEnum
-   */
-  public enum ArrayEnumEnum {
-    FISH("fish"),
-    CRAB("crab");
-
-    private String value;
-
-    ArrayEnumEnum(String value) {
-      this.value = value;
-    }
-
-    @JsonValue
-    public String getValue() {
-      return value;
-    }
-
-    @Override
-    public String toString() {
-      return String.valueOf(value);
-    }
-
-    @JsonCreator
-    public static ArrayEnumEnum fromValue(String value) {
-      for (ArrayEnumEnum b : ArrayEnumEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
-        }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
-    }
-  }
-  public static final String JSON_PROPERTY_ARRAY_ENUM = "array_enum";
-  private List<ArrayEnumEnum> arrayEnum = null;
-
-  public EnumArrays justSymbol(JustSymbolEnum justSymbol) {
-    this.justSymbol = justSymbol;
-    return this;
-  }
-
-  /**
-   * Get justSymbol
-   * @return justSymbol
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_JUST_SYMBOL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public JustSymbolEnum getJustSymbol() {
-    return justSymbol;
-  }
-
-  @JsonProperty(JSON_PROPERTY_JUST_SYMBOL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setJustSymbol(JustSymbolEnum justSymbol) {
-    this.justSymbol = justSymbol;
-  }
-
-  public EnumArrays arrayEnum(List<ArrayEnumEnum> arrayEnum) {
-    this.arrayEnum = arrayEnum;
-    return this;
-  }
-
-  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
-    if (this.arrayEnum == null) {
-      this.arrayEnum = new ArrayList<ArrayEnumEnum>();
-    }
-    this.arrayEnum.add(arrayEnumItem);
-    return this;
-  }
-
-  /**
-   * Get arrayEnum
-   * @return arrayEnum
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_ENUM)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<ArrayEnumEnum> getArrayEnum() {
-    return arrayEnum;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_ENUM)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
-    this.arrayEnum = arrayEnum;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    EnumArrays enumArrays = (EnumArrays) o;
-    return Objects.equals(this.justSymbol, enumArrays.justSymbol) &&
-        Objects.equals(this.arrayEnum, enumArrays.arrayEnum);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(justSymbol, arrayEnum);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class EnumArrays {\n");
-    sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
-    sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumClass.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumClass.java
index 1ee1b126d03..f01bfc41755 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumClass.java
@@ -29,34 +29,34 @@ import com.fasterxml.jackson.annotation.JsonValue;
  */
 @Introspected
 public enum EnumClass {
-  _ABC("_abc"),
-  _EFG("-efg"),
-  _XYZ_("(xyz)");
+    _ABC("_abc"),
+    _EFG("-efg"),
+    _XYZ_("(xyz)");
 
-  private String value;
+    private String value;
 
-  EnumClass(String value) {
-    this.value = value;
-  }
-
-  @JsonValue
-  public String getValue() {
-    return value;
-  }
-
-  @Override
-  public String toString() {
-    return String.valueOf(value);
-  }
-
-  @JsonCreator
-  public static EnumClass fromValue(String value) {
-    for (EnumClass b : EnumClass.values()) {
-      if (b.value.equals(value)) {
-        return b;
-      }
+    EnumClass(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static EnumClass fromValue(String value) {
+        for (EnumClass b : EnumClass.values()) {
+            if (b.value.equals(value)) {
+                return b;
+            }
+        }
+        throw new IllegalArgumentException("Unexpected value '" + value + "'");
     }
-    throw new IllegalArgumentException("Unexpected value '" + value + "'");
-  }
 }
 
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumTest.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumTest.java
index 0b9c758a822..1168da6df50 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/EnumTest.java
@@ -38,313 +38,315 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class EnumTest {
-  /**
-   * Gets or Sets enumString
-   */
-  public enum EnumStringEnum {
-    UPPER("UPPER"),
-    LOWER("lower"),
-    EMPTY("");
+    /**
+     * Gets or Sets enumString
+     */
+    public enum EnumStringEnum {
+        UPPER("UPPER"),
+        LOWER("lower"),
+        EMPTY("");
 
-    private String value;
+        private String value;
 
-    EnumStringEnum(String value) {
-      this.value = value;
+        EnumStringEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static EnumStringEnum fromValue(String value) {
+            for (EnumStringEnum b : EnumStringEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_ENUM_STRING = "enum_string";
+    private EnumStringEnum enumString;
+
+    /**
+     * Gets or Sets enumStringRequired
+     */
+    public enum EnumStringRequiredEnum {
+        UPPER("UPPER"),
+        LOWER("lower"),
+        EMPTY("");
+
+        private String value;
+
+        EnumStringRequiredEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static EnumStringRequiredEnum fromValue(String value) {
+            for (EnumStringRequiredEnum b : EnumStringRequiredEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_ENUM_STRING_REQUIRED = "enum_string_required";
+    private EnumStringRequiredEnum enumStringRequired;
+
+    /**
+     * Gets or Sets enumInteger
+     */
+    public enum EnumIntegerEnum {
+        NUMBER_1(1),
+        NUMBER_MINUS_1(-1);
+
+        private Integer value;
+
+        EnumIntegerEnum(Integer value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public Integer getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static EnumIntegerEnum fromValue(Integer value) {
+            for (EnumIntegerEnum b : EnumIntegerEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_ENUM_INTEGER = "enum_integer";
+    private EnumIntegerEnum enumInteger;
+
+    /**
+     * Gets or Sets enumNumber
+     */
+    public enum EnumNumberEnum {
+        NUMBER_1_DOT_1(1.1),
+        NUMBER_MINUS_1_DOT_2(-1.2);
+
+        private Double value;
+
+        EnumNumberEnum(Double value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public Double getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static EnumNumberEnum fromValue(Double value) {
+            for (EnumNumberEnum b : EnumNumberEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_ENUM_NUMBER = "enum_number";
+    private EnumNumberEnum enumNumber;
+
+    public static final String JSON_PROPERTY_OUTER_ENUM = "outerEnum";
+    private OuterEnum outerEnum;
+
+    public EnumTest() {
+    }
+    public EnumTest enumString(EnumStringEnum enumString) {
+        this.enumString = enumString;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    /**
+     * Get enumString
+     * @return enumString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ENUM_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public EnumStringEnum getEnumString() {
+        return enumString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ENUM_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setEnumString(EnumStringEnum enumString) {
+        this.enumString = enumString;
+    }
+
+    public EnumTest enumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+        this.enumStringRequired = enumStringRequired;
+        return this;
+    }
+
+    /**
+     * Get enumStringRequired
+     * @return enumStringRequired
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_ENUM_STRING_REQUIRED)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public EnumStringRequiredEnum getEnumStringRequired() {
+        return enumStringRequired;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ENUM_STRING_REQUIRED)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+        this.enumStringRequired = enumStringRequired;
+    }
+
+    public EnumTest enumInteger(EnumIntegerEnum enumInteger) {
+        this.enumInteger = enumInteger;
+        return this;
+    }
+
+    /**
+     * Get enumInteger
+     * @return enumInteger
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ENUM_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public EnumIntegerEnum getEnumInteger() {
+        return enumInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ENUM_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setEnumInteger(EnumIntegerEnum enumInteger) {
+        this.enumInteger = enumInteger;
+    }
+
+    public EnumTest enumNumber(EnumNumberEnum enumNumber) {
+        this.enumNumber = enumNumber;
+        return this;
+    }
+
+    /**
+     * Get enumNumber
+     * @return enumNumber
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ENUM_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public EnumNumberEnum getEnumNumber() {
+        return enumNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ENUM_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setEnumNumber(EnumNumberEnum enumNumber) {
+        this.enumNumber = enumNumber;
+    }
+
+    public EnumTest outerEnum(OuterEnum outerEnum) {
+        this.outerEnum = outerEnum;
+        return this;
+    }
+
+    /**
+     * Get outerEnum
+     * @return outerEnum
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_OUTER_ENUM)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public OuterEnum getOuterEnum() {
+        return outerEnum;
+    }
+
+    @JsonProperty(JSON_PROPERTY_OUTER_ENUM)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setOuterEnum(OuterEnum outerEnum) {
+        this.outerEnum = outerEnum;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        EnumTest enumTest = (EnumTest) o;
+        return Objects.equals(this.enumString, enumTest.enumString) &&
+            Objects.equals(this.enumStringRequired, enumTest.enumStringRequired) &&
+            Objects.equals(this.enumInteger, enumTest.enumInteger) &&
+            Objects.equals(this.enumNumber, enumTest.enumNumber) &&
+            Objects.equals(this.outerEnum, enumTest.outerEnum);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(enumString, enumStringRequired, enumInteger, enumNumber, outerEnum);
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class EnumTest {\n");
+        sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
+        sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
+        sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
+        sb.append("    enumNumber: ").append(toIndentedString(enumNumber)).append("\n");
+        sb.append("    outerEnum: ").append(toIndentedString(outerEnum)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static EnumStringEnum fromValue(String value) {
-      for (EnumStringEnum b : EnumStringEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_ENUM_STRING = "enum_string";
-  private EnumStringEnum enumString;
-
-  /**
-   * Gets or Sets enumStringRequired
-   */
-  public enum EnumStringRequiredEnum {
-    UPPER("UPPER"),
-    LOWER("lower"),
-    EMPTY("");
-
-    private String value;
-
-    EnumStringRequiredEnum(String value) {
-      this.value = value;
-    }
-
-    @JsonValue
-    public String getValue() {
-      return value;
-    }
-
-    @Override
-    public String toString() {
-      return String.valueOf(value);
-    }
-
-    @JsonCreator
-    public static EnumStringRequiredEnum fromValue(String value) {
-      for (EnumStringRequiredEnum b : EnumStringRequiredEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
-        }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
-    }
-  }
-  public static final String JSON_PROPERTY_ENUM_STRING_REQUIRED = "enum_string_required";
-  private EnumStringRequiredEnum enumStringRequired;
-
-  /**
-   * Gets or Sets enumInteger
-   */
-  public enum EnumIntegerEnum {
-    NUMBER_1(1),
-    NUMBER_MINUS_1(-1);
-
-    private Integer value;
-
-    EnumIntegerEnum(Integer value) {
-      this.value = value;
-    }
-
-    @JsonValue
-    public Integer getValue() {
-      return value;
-    }
-
-    @Override
-    public String toString() {
-      return String.valueOf(value);
-    }
-
-    @JsonCreator
-    public static EnumIntegerEnum fromValue(Integer value) {
-      for (EnumIntegerEnum b : EnumIntegerEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
-        }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
-    }
-  }
-  public static final String JSON_PROPERTY_ENUM_INTEGER = "enum_integer";
-  private EnumIntegerEnum enumInteger;
-
-  /**
-   * Gets or Sets enumNumber
-   */
-  public enum EnumNumberEnum {
-    NUMBER_1_DOT_1(1.1),
-    NUMBER_MINUS_1_DOT_2(-1.2);
-
-    private Double value;
-
-    EnumNumberEnum(Double value) {
-      this.value = value;
-    }
-
-    @JsonValue
-    public Double getValue() {
-      return value;
-    }
-
-    @Override
-    public String toString() {
-      return String.valueOf(value);
-    }
-
-    @JsonCreator
-    public static EnumNumberEnum fromValue(Double value) {
-      for (EnumNumberEnum b : EnumNumberEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
-        }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
-    }
-  }
-  public static final String JSON_PROPERTY_ENUM_NUMBER = "enum_number";
-  private EnumNumberEnum enumNumber;
-
-  public static final String JSON_PROPERTY_OUTER_ENUM = "outerEnum";
-  private OuterEnum outerEnum;
-
-  public EnumTest enumString(EnumStringEnum enumString) {
-    this.enumString = enumString;
-    return this;
-  }
-
-  /**
-   * Get enumString
-   * @return enumString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ENUM_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public EnumStringEnum getEnumString() {
-    return enumString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ENUM_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setEnumString(EnumStringEnum enumString) {
-    this.enumString = enumString;
-  }
-
-  public EnumTest enumStringRequired(EnumStringRequiredEnum enumStringRequired) {
-    this.enumStringRequired = enumStringRequired;
-    return this;
-  }
-
-  /**
-   * Get enumStringRequired
-   * @return enumStringRequired
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_ENUM_STRING_REQUIRED)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public EnumStringRequiredEnum getEnumStringRequired() {
-    return enumStringRequired;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ENUM_STRING_REQUIRED)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
-    this.enumStringRequired = enumStringRequired;
-  }
-
-  public EnumTest enumInteger(EnumIntegerEnum enumInteger) {
-    this.enumInteger = enumInteger;
-    return this;
-  }
-
-  /**
-   * Get enumInteger
-   * @return enumInteger
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ENUM_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public EnumIntegerEnum getEnumInteger() {
-    return enumInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ENUM_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setEnumInteger(EnumIntegerEnum enumInteger) {
-    this.enumInteger = enumInteger;
-  }
-
-  public EnumTest enumNumber(EnumNumberEnum enumNumber) {
-    this.enumNumber = enumNumber;
-    return this;
-  }
-
-  /**
-   * Get enumNumber
-   * @return enumNumber
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ENUM_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public EnumNumberEnum getEnumNumber() {
-    return enumNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ENUM_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setEnumNumber(EnumNumberEnum enumNumber) {
-    this.enumNumber = enumNumber;
-  }
-
-  public EnumTest outerEnum(OuterEnum outerEnum) {
-    this.outerEnum = outerEnum;
-    return this;
-  }
-
-  /**
-   * Get outerEnum
-   * @return outerEnum
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_OUTER_ENUM)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public OuterEnum getOuterEnum() {
-    return outerEnum;
-  }
-
-  @JsonProperty(JSON_PROPERTY_OUTER_ENUM)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setOuterEnum(OuterEnum outerEnum) {
-    this.outerEnum = outerEnum;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    EnumTest enumTest = (EnumTest) o;
-    return Objects.equals(this.enumString, enumTest.enumString) &&
-        Objects.equals(this.enumStringRequired, enumTest.enumStringRequired) &&
-        Objects.equals(this.enumInteger, enumTest.enumInteger) &&
-        Objects.equals(this.enumNumber, enumTest.enumNumber) &&
-        Objects.equals(this.outerEnum, enumTest.outerEnum);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(enumString, enumStringRequired, enumInteger, enumNumber, outerEnum);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class EnumTest {\n");
-    sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
-    sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
-    sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
-    sb.append("    enumNumber: ").append(toIndentedString(enumNumber)).append("\n");
-    sb.append("    outerEnum: ").append(toIndentedString(outerEnum)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 083b6db28cf..b1f30f1a4fc 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -18,6 +18,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.*;
 
 import javax.validation.constraints.*;
@@ -36,104 +37,106 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class FileSchemaTestClass {
-  public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+    public static final String JSON_PROPERTY_FILE = "file";
+    private ModelFile _file;
 
-  public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+    public static final String JSON_PROPERTY_FILES = "files";
+    private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
-    return this;
-  }
-
-  /**
-   * Get file
-   * @return file
-   **/
-  @Valid
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_FILE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public java.io.File getFile() {
-    return file;
-  }
-
-  @JsonProperty(JSON_PROPERTY_FILE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
-  }
-
-  public FileSchemaTestClass files(List<java.io.File> files) {
-    this.files = files;
-    return this;
-  }
-
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
-    if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+    public FileSchemaTestClass() {
     }
-    this.files.add(filesItem);
-    return this;
-  }
-
-  /**
-   * Get files
-   * @return files
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_FILES)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<java.io.File> getFiles() {
-    return files;
-  }
-
-  @JsonProperty(JSON_PROPERTY_FILES)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
-    this.files = files;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public FileSchemaTestClass _file(ModelFile _file) {
+        this._file = _file;
+        return this;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    /**
+     * Get _file
+     * @return _file
+     **/
+    @Valid
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_FILE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public ModelFile getFile() {
+        return _file;
     }
-    FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
-        Objects.equals(this.files, fileSchemaTestClass.files);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(file, files);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
-    sb.append("    files: ").append(toIndentedString(files)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    @JsonProperty(JSON_PROPERTY_FILE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setFile(ModelFile _file) {
+        this._file = _file;
+    }
+
+    public FileSchemaTestClass files(List<ModelFile> files) {
+        this.files = files;
+        return this;
+    }
+
+    public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
+        if (this.files == null) {
+            this.files = new ArrayList<ModelFile>();
+        }
+        this.files.add(filesItem);
+        return this;
+    }
+
+    /**
+     * Get files
+     * @return files
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_FILES)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<ModelFile> getFiles() {
+        return files;
+    }
+
+    @JsonProperty(JSON_PROPERTY_FILES)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setFiles(List<ModelFile> files) {
+        this.files = files;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
+        return Objects.equals(this._file, fileSchemaTestClass._file) &&
+            Objects.equals(this.files, fileSchemaTestClass.files);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(_file, files);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class FileSchemaTestClass {\n");
+        sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
+        sb.append("    files: ").append(toIndentedString(files)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FormatTest.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FormatTest.java
index 239ef22ecb2..83555236ab5 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/FormatTest.java
@@ -51,457 +51,459 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class FormatTest {
-  public static final String JSON_PROPERTY_INTEGER = "integer";
-  private Integer integer;
+    public static final String JSON_PROPERTY_INTEGER = "integer";
+    private Integer integer;
 
-  public static final String JSON_PROPERTY_INT32 = "int32";
-  private Integer int32;
+    public static final String JSON_PROPERTY_INT32 = "int32";
+    private Integer int32;
 
-  public static final String JSON_PROPERTY_INT64 = "int64";
-  private Long int64;
+    public static final String JSON_PROPERTY_INT64 = "int64";
+    private Long int64;
 
-  public static final String JSON_PROPERTY_NUMBER = "number";
-  private BigDecimal number;
+    public static final String JSON_PROPERTY_NUMBER = "number";
+    private BigDecimal number;
 
-  public static final String JSON_PROPERTY_FLOAT = "float";
-  private Float _float;
+    public static final String JSON_PROPERTY_FLOAT = "float";
+    private Float _float;
 
-  public static final String JSON_PROPERTY_DOUBLE = "double";
-  private Double _double;
+    public static final String JSON_PROPERTY_DOUBLE = "double";
+    private Double _double;
 
-  public static final String JSON_PROPERTY_STRING = "string";
-  private String string;
+    public static final String JSON_PROPERTY_STRING = "string";
+    private String string;
 
-  public static final String JSON_PROPERTY_BYTE = "byte";
-  private byte[] _byte;
+    public static final String JSON_PROPERTY_BYTE = "byte";
+    private byte[] _byte;
 
-  public static final String JSON_PROPERTY_BINARY = "binary";
-  private File binary;
+    public static final String JSON_PROPERTY_BINARY = "binary";
+    private File binary;
 
-  public static final String JSON_PROPERTY_DATE = "date";
-  private LocalDate date;
+    public static final String JSON_PROPERTY_DATE = "date";
+    private LocalDate date;
 
-  public static final String JSON_PROPERTY_DATE_TIME = "dateTime";
-  private LocalDateTime dateTime;
+    public static final String JSON_PROPERTY_DATE_TIME = "dateTime";
+    private LocalDateTime dateTime;
 
-  public static final String JSON_PROPERTY_UUID = "uuid";
-  private UUID uuid;
+    public static final String JSON_PROPERTY_UUID = "uuid";
+    private UUID uuid;
 
-  public static final String JSON_PROPERTY_PASSWORD = "password";
-  private String password;
+    public static final String JSON_PROPERTY_PASSWORD = "password";
+    private String password;
 
-  public static final String JSON_PROPERTY_BIG_DECIMAL = "BigDecimal";
-  private BigDecimal bigDecimal;
+    public static final String JSON_PROPERTY_BIG_DECIMAL = "BigDecimal";
+    private BigDecimal bigDecimal;
 
-  public FormatTest integer(Integer integer) {
-    this.integer = integer;
-    return this;
-  }
-
-  /**
-   * Get integer
-   * minimum: 10
-   * maximum: 100
-   * @return integer
-   **/
-  @Nullable
-  @Min(10)
-  @Max(100)
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getInteger() {
-    return integer;
-  }
-
-  @JsonProperty(JSON_PROPERTY_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setInteger(Integer integer) {
-    this.integer = integer;
-  }
-
-  public FormatTest int32(Integer int32) {
-    this.int32 = int32;
-    return this;
-  }
-
-  /**
-   * Get int32
-   * minimum: 20
-   * maximum: 200
-   * @return int32
-   **/
-  @Nullable
-  @Min(20)
-  @Max(200)
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_INT32)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getInt32() {
-    return int32;
-  }
-
-  @JsonProperty(JSON_PROPERTY_INT32)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setInt32(Integer int32) {
-    this.int32 = int32;
-  }
-
-  public FormatTest int64(Long int64) {
-    this.int64 = int64;
-    return this;
-  }
-
-  /**
-   * Get int64
-   * @return int64
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_INT64)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getInt64() {
-    return int64;
-  }
-
-  @JsonProperty(JSON_PROPERTY_INT64)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setInt64(Long int64) {
-    this.int64 = int64;
-  }
-
-  public FormatTest number(BigDecimal number) {
-    this.number = number;
-    return this;
-  }
-
-  /**
-   * Get number
-   * minimum: 32.1
-   * maximum: 543.2
-   * @return number
-   **/
-  @NotNull
-  @DecimalMin("32.1")
-  @DecimalMax("543.2")
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public BigDecimal getNumber() {
-    return number;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setNumber(BigDecimal number) {
-    this.number = number;
-  }
-
-  public FormatTest _float(Float _float) {
-    this._float = _float;
-    return this;
-  }
-
-  /**
-   * Get _float
-   * minimum: 54.3
-   * maximum: 987.6
-   * @return _float
-   **/
-  @Nullable
-  @DecimalMin("54.3")
-  @DecimalMax("987.6")
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_FLOAT)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Float getFloat() {
-    return _float;
-  }
-
-  @JsonProperty(JSON_PROPERTY_FLOAT)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFloat(Float _float) {
-    this._float = _float;
-  }
-
-  public FormatTest _double(Double _double) {
-    this._double = _double;
-    return this;
-  }
-
-  /**
-   * Get _double
-   * minimum: 67.8
-   * maximum: 123.4
-   * @return _double
-   **/
-  @Nullable
-  @DecimalMin("67.8")
-  @DecimalMax("123.4")
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_DOUBLE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Double getDouble() {
-    return _double;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DOUBLE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setDouble(Double _double) {
-    this._double = _double;
-  }
-
-  public FormatTest string(String string) {
-    this.string = string;
-    return this;
-  }
-
-  /**
-   * Get string
-   * @return string
-   **/
-  @Nullable
-  @Pattern(regexp="/[a-z]/i")
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getString() {
-    return string;
-  }
-
-  @JsonProperty(JSON_PROPERTY_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setString(String string) {
-    this.string = string;
-  }
-
-  public FormatTest _byte(byte[] _byte) {
-    this._byte = _byte;
-    return this;
-  }
-
-  /**
-   * Get _byte
-   * @return _byte
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_BYTE)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public byte[] getByte() {
-    return _byte;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BYTE)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setByte(byte[] _byte) {
-    this._byte = _byte;
-  }
-
-  public FormatTest binary(File binary) {
-    this.binary = binary;
-    return this;
-  }
-
-  /**
-   * Get binary
-   * @return binary
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BINARY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public File getBinary() {
-    return binary;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BINARY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setBinary(File binary) {
-    this.binary = binary;
-  }
-
-  public FormatTest date(LocalDate date) {
-    this.date = date;
-    return this;
-  }
-
-  /**
-   * Get date
-   * @return date
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_DATE)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
-  public LocalDate getDate() {
-    return date;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DATE)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
-  public void setDate(LocalDate date) {
-    this.date = date;
-  }
-
-  public FormatTest dateTime(LocalDateTime dateTime) {
-    this.dateTime = dateTime;
-    return this;
-  }
-
-  /**
-   * Get dateTime
-   * @return dateTime
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_DATE_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-  public LocalDateTime getDateTime() {
-    return dateTime;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DATE_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-  public void setDateTime(LocalDateTime dateTime) {
-    this.dateTime = dateTime;
-  }
-
-  public FormatTest uuid(UUID uuid) {
-    this.uuid = uuid;
-    return this;
-  }
-
-  /**
-   * Get uuid
-   * @return uuid
-   **/
-  @Nullable
-  @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-  @JsonProperty(JSON_PROPERTY_UUID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public UUID getUuid() {
-    return uuid;
-  }
-
-  @JsonProperty(JSON_PROPERTY_UUID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setUuid(UUID uuid) {
-    this.uuid = uuid;
-  }
-
-  public FormatTest password(String password) {
-    this.password = password;
-    return this;
-  }
-
-  /**
-   * Get password
-   * @return password
-   **/
-  @NotNull
-  @Size(min=10, max=64)
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_PASSWORD)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public String getPassword() {
-    return password;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PASSWORD)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setPassword(String password) {
-    this.password = password;
-  }
-
-  public FormatTest bigDecimal(BigDecimal bigDecimal) {
-    this.bigDecimal = bigDecimal;
-    return this;
-  }
-
-  /**
-   * Get bigDecimal
-   * @return bigDecimal
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BIG_DECIMAL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getBigDecimal() {
-    return bigDecimal;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BIG_DECIMAL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setBigDecimal(BigDecimal bigDecimal) {
-    this.bigDecimal = bigDecimal;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public FormatTest() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public FormatTest integer(Integer integer) {
+        this.integer = integer;
+        return this;
     }
-    FormatTest formatTest = (FormatTest) o;
-    return Objects.equals(this.integer, formatTest.integer) &&
-        Objects.equals(this.int32, formatTest.int32) &&
-        Objects.equals(this.int64, formatTest.int64) &&
-        Objects.equals(this.number, formatTest.number) &&
-        Objects.equals(this._float, formatTest._float) &&
-        Objects.equals(this._double, formatTest._double) &&
-        Objects.equals(this.string, formatTest.string) &&
-        Arrays.equals(this._byte, formatTest._byte) &&
-        Objects.equals(this.binary, formatTest.binary) &&
-        Objects.equals(this.date, formatTest.date) &&
-        Objects.equals(this.dateTime, formatTest.dateTime) &&
-        Objects.equals(this.uuid, formatTest.uuid) &&
-        Objects.equals(this.password, formatTest.password) &&
-        Objects.equals(this.bigDecimal, formatTest.bigDecimal);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(integer, int32, int64, number, _float, _double, string, Arrays.hashCode(_byte), binary, date, dateTime, uuid, password, bigDecimal);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class FormatTest {\n");
-    sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
-    sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
-    sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
-    sb.append("    number: ").append(toIndentedString(number)).append("\n");
-    sb.append("    _float: ").append(toIndentedString(_float)).append("\n");
-    sb.append("    _double: ").append(toIndentedString(_double)).append("\n");
-    sb.append("    string: ").append(toIndentedString(string)).append("\n");
-    sb.append("    _byte: ").append(toIndentedString(_byte)).append("\n");
-    sb.append("    binary: ").append(toIndentedString(binary)).append("\n");
-    sb.append("    date: ").append(toIndentedString(date)).append("\n");
-    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
-    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
-    sb.append("    password: ").append(toIndentedString(password)).append("\n");
-    sb.append("    bigDecimal: ").append(toIndentedString(bigDecimal)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get integer
+     * minimum: 10
+     * maximum: 100
+     * @return integer
+     **/
+    @Nullable
+    @Min(10)
+    @Max(100)
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getInteger() {
+        return integer;
+    }
+
+    @JsonProperty(JSON_PROPERTY_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setInteger(Integer integer) {
+        this.integer = integer;
+    }
+
+    public FormatTest int32(Integer int32) {
+        this.int32 = int32;
+        return this;
+    }
+
+    /**
+     * Get int32
+     * minimum: 20
+     * maximum: 200
+     * @return int32
+     **/
+    @Nullable
+    @Min(20)
+    @Max(200)
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_INT32)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getInt32() {
+        return int32;
+    }
+
+    @JsonProperty(JSON_PROPERTY_INT32)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setInt32(Integer int32) {
+        this.int32 = int32;
+    }
+
+    public FormatTest int64(Long int64) {
+        this.int64 = int64;
+        return this;
+    }
+
+    /**
+     * Get int64
+     * @return int64
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_INT64)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getInt64() {
+        return int64;
+    }
+
+    @JsonProperty(JSON_PROPERTY_INT64)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setInt64(Long int64) {
+        this.int64 = int64;
+    }
+
+    public FormatTest number(BigDecimal number) {
+        this.number = number;
+        return this;
+    }
+
+    /**
+     * Get number
+     * minimum: 32.1
+     * maximum: 543.2
+     * @return number
+     **/
+    @NotNull
+    @DecimalMin("32.1")
+    @DecimalMax("543.2")
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public BigDecimal getNumber() {
+        return number;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setNumber(BigDecimal number) {
+        this.number = number;
+    }
+
+    public FormatTest _float(Float _float) {
+        this._float = _float;
+        return this;
+    }
+
+    /**
+     * Get _float
+     * minimum: 54.3
+     * maximum: 987.6
+     * @return _float
+     **/
+    @Nullable
+    @DecimalMin("54.3")
+    @DecimalMax("987.6")
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_FLOAT)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Float getFloat() {
+        return _float;
+    }
+
+    @JsonProperty(JSON_PROPERTY_FLOAT)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setFloat(Float _float) {
+        this._float = _float;
+    }
+
+    public FormatTest _double(Double _double) {
+        this._double = _double;
+        return this;
+    }
+
+    /**
+     * Get _double
+     * minimum: 67.8
+     * maximum: 123.4
+     * @return _double
+     **/
+    @Nullable
+    @DecimalMin("67.8")
+    @DecimalMax("123.4")
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_DOUBLE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Double getDouble() {
+        return _double;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DOUBLE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setDouble(Double _double) {
+        this._double = _double;
+    }
+
+    public FormatTest string(String string) {
+        this.string = string;
+        return this;
+    }
+
+    /**
+     * Get string
+     * @return string
+     **/
+    @Nullable
+    @Pattern(regexp="/[a-z]/i")
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getString() {
+        return string;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setString(String string) {
+        this.string = string;
+    }
+
+    public FormatTest _byte(byte[] _byte) {
+        this._byte = _byte;
+        return this;
+    }
+
+    /**
+     * Get _byte
+     * @return _byte
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_BYTE)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public byte[] getByte() {
+        return _byte;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BYTE)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setByte(byte[] _byte) {
+        this._byte = _byte;
+    }
+
+    public FormatTest binary(File binary) {
+        this.binary = binary;
+        return this;
+    }
+
+    /**
+     * Get binary
+     * @return binary
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BINARY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public File getBinary() {
+        return binary;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BINARY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setBinary(File binary) {
+        this.binary = binary;
+    }
+
+    public FormatTest date(LocalDate date) {
+        this.date = date;
+        return this;
+    }
+
+    /**
+     * Get date
+     * @return date
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_DATE)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
+       public LocalDate getDate() {
+        return date;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DATE)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
+       public void setDate(LocalDate date) {
+        this.date = date;
+    }
+
+    public FormatTest dateTime(LocalDateTime dateTime) {
+        this.dateTime = dateTime;
+        return this;
+    }
+
+    /**
+     * Get dateTime
+     * @return dateTime
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_DATE_TIME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public LocalDateTime getDateTime() {
+        return dateTime;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DATE_TIME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public void setDateTime(LocalDateTime dateTime) {
+        this.dateTime = dateTime;
+    }
+
+    public FormatTest uuid(UUID uuid) {
+        this.uuid = uuid;
+        return this;
+    }
+
+    /**
+     * Get uuid
+     * @return uuid
+     **/
+    @Nullable
+    @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
+    @JsonProperty(JSON_PROPERTY_UUID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public UUID getUuid() {
+        return uuid;
+    }
+
+    @JsonProperty(JSON_PROPERTY_UUID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setUuid(UUID uuid) {
+        this.uuid = uuid;
+    }
+
+    public FormatTest password(String password) {
+        this.password = password;
+        return this;
+    }
+
+    /**
+     * Get password
+     * @return password
+     **/
+    @NotNull
+    @Size(min=10, max=64)
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_PASSWORD)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getPassword() {
+        return password;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PASSWORD)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public FormatTest bigDecimal(BigDecimal bigDecimal) {
+        this.bigDecimal = bigDecimal;
+        return this;
+    }
+
+    /**
+     * Get bigDecimal
+     * @return bigDecimal
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BIG_DECIMAL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getBigDecimal() {
+        return bigDecimal;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BIG_DECIMAL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setBigDecimal(BigDecimal bigDecimal) {
+        this.bigDecimal = bigDecimal;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        FormatTest formatTest = (FormatTest) o;
+        return Objects.equals(this.integer, formatTest.integer) &&
+            Objects.equals(this.int32, formatTest.int32) &&
+            Objects.equals(this.int64, formatTest.int64) &&
+            Objects.equals(this.number, formatTest.number) &&
+            Objects.equals(this._float, formatTest._float) &&
+            Objects.equals(this._double, formatTest._double) &&
+            Objects.equals(this.string, formatTest.string) &&
+            Arrays.equals(this._byte, formatTest._byte) &&
+            Objects.equals(this.binary, formatTest.binary) &&
+            Objects.equals(this.date, formatTest.date) &&
+            Objects.equals(this.dateTime, formatTest.dateTime) &&
+            Objects.equals(this.uuid, formatTest.uuid) &&
+            Objects.equals(this.password, formatTest.password) &&
+            Objects.equals(this.bigDecimal, formatTest.bigDecimal);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(integer, int32, int64, number, _float, _double, string, Arrays.hashCode(_byte), binary, date, dateTime, uuid, password, bigDecimal);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class FormatTest {\n");
+        sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
+        sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
+        sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
+        sb.append("    number: ").append(toIndentedString(number)).append("\n");
+        sb.append("    _float: ").append(toIndentedString(_float)).append("\n");
+        sb.append("    _double: ").append(toIndentedString(_double)).append("\n");
+        sb.append("    string: ").append(toIndentedString(string)).append("\n");
+        sb.append("    _byte: ").append(toIndentedString(_byte)).append("\n");
+        sb.append("    binary: ").append(toIndentedString(binary)).append("\n");
+        sb.append("    date: ").append(toIndentedString(date)).append("\n");
+        sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+        sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+        sb.append("    password: ").append(toIndentedString(password)).append("\n");
+        sb.append("    bigDecimal: ").append(toIndentedString(bigDecimal)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 43e713b0305..0de28c49786 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -34,73 +34,75 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class HasOnlyReadOnly {
-  public static final String JSON_PROPERTY_BAR = "bar";
-  private String bar;
+    public static final String JSON_PROPERTY_BAR = "bar";
+    private String bar;
 
-  public static final String JSON_PROPERTY_FOO = "foo";
-  private String foo;
+    public static final String JSON_PROPERTY_FOO = "foo";
+    private String foo;
 
-  /**
-   * Get bar
-   * @return bar
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BAR)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getBar() {
-    return bar;
-  }
-
-  /**
-   * Get foo
-   * @return foo
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_FOO)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getFoo() {
-    return foo;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public HasOnlyReadOnly() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    /**
+     * Get bar
+     * @return bar
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BAR)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getBar() {
+        return bar;
     }
-    HasOnlyReadOnly hasOnlyReadOnly = (HasOnlyReadOnly) o;
-    return Objects.equals(this.bar, hasOnlyReadOnly.bar) &&
-        Objects.equals(this.foo, hasOnlyReadOnly.foo);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(bar, foo);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class HasOnlyReadOnly {\n");
-    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
-    sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get foo
+     * @return foo
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_FOO)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getFoo() {
+        return foo;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        HasOnlyReadOnly hasOnlyReadOnly = (HasOnlyReadOnly) o;
+        return Objects.equals(this.bar, hasOnlyReadOnly.bar) &&
+            Objects.equals(this.foo, hasOnlyReadOnly.foo);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(bar, foo);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class HasOnlyReadOnly {\n");
+        sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+        sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MapTest.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MapTest.java
index 259929412b2..57112ef976a 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MapTest.java
@@ -39,216 +39,218 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class MapTest {
-  public static final String JSON_PROPERTY_MAP_MAP_OF_STRING = "map_map_of_string";
-  private Map<String, Map<String, String>> mapMapOfString = null;
+    public static final String JSON_PROPERTY_MAP_MAP_OF_STRING = "map_map_of_string";
+    private Map<String, Map<String, String>> mapMapOfString = null;
 
-  /**
-   * Gets or Sets inner
-   */
-  public enum InnerEnum {
-    UPPER("UPPER"),
-    LOWER("lower");
+    /**
+     * Gets or Sets inner
+     */
+    public enum InnerEnum {
+        UPPER("UPPER"),
+        LOWER("lower");
 
-    private String value;
+        private String value;
 
-    InnerEnum(String value) {
-      this.value = value;
+        InnerEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static InnerEnum fromValue(String value) {
+            for (InnerEnum b : InnerEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_MAP_OF_ENUM_STRING = "map_of_enum_string";
+    private Map<String, InnerEnum> mapOfEnumString = null;
+
+    public static final String JSON_PROPERTY_DIRECT_MAP = "direct_map";
+    private Map<String, Boolean> directMap = null;
+
+    public static final String JSON_PROPERTY_INDIRECT_MAP = "indirect_map";
+    private Map<String, Boolean> indirectMap = null;
+
+    public MapTest() {
+    }
+    public MapTest mapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+        this.mapMapOfString = mapMapOfString;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+        if (this.mapMapOfString == null) {
+            this.mapMapOfString = new HashMap<String, Map<String, String>>();
+        }
+        this.mapMapOfString.put(key, mapMapOfStringItem);
+        return this;
+  }
+
+    /**
+     * Get mapMapOfString
+     * @return mapMapOfString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_MAP_OF_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Map<String, String>> getMapMapOfString() {
+        return mapMapOfString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_MAP_OF_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+        this.mapMapOfString = mapMapOfString;
+    }
+
+    public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+        this.mapOfEnumString = mapOfEnumString;
+        return this;
+    }
+
+    public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+        if (this.mapOfEnumString == null) {
+            this.mapOfEnumString = new HashMap<String, InnerEnum>();
+        }
+        this.mapOfEnumString.put(key, mapOfEnumStringItem);
+        return this;
+  }
+
+    /**
+     * Get mapOfEnumString
+     * @return mapOfEnumString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP_OF_ENUM_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, InnerEnum> getMapOfEnumString() {
+        return mapOfEnumString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP_OF_ENUM_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+        this.mapOfEnumString = mapOfEnumString;
+    }
+
+    public MapTest directMap(Map<String, Boolean> directMap) {
+        this.directMap = directMap;
+        return this;
+    }
+
+    public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+        if (this.directMap == null) {
+            this.directMap = new HashMap<String, Boolean>();
+        }
+        this.directMap.put(key, directMapItem);
+        return this;
+  }
+
+    /**
+     * Get directMap
+     * @return directMap
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_DIRECT_MAP)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Boolean> getDirectMap() {
+        return directMap;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DIRECT_MAP)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setDirectMap(Map<String, Boolean> directMap) {
+        this.directMap = directMap;
+    }
+
+    public MapTest indirectMap(Map<String, Boolean> indirectMap) {
+        this.indirectMap = indirectMap;
+        return this;
+    }
+
+    public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
+        if (this.indirectMap == null) {
+            this.indirectMap = new HashMap<String, Boolean>();
+        }
+        this.indirectMap.put(key, indirectMapItem);
+        return this;
+  }
+
+    /**
+     * Get indirectMap
+     * @return indirectMap
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_INDIRECT_MAP)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Boolean> getIndirectMap() {
+        return indirectMap;
+    }
+
+    @JsonProperty(JSON_PROPERTY_INDIRECT_MAP)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setIndirectMap(Map<String, Boolean> indirectMap) {
+        this.indirectMap = indirectMap;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        MapTest mapTest = (MapTest) o;
+        return Objects.equals(this.mapMapOfString, mapTest.mapMapOfString) &&
+            Objects.equals(this.mapOfEnumString, mapTest.mapOfEnumString) &&
+            Objects.equals(this.directMap, mapTest.directMap) &&
+            Objects.equals(this.indirectMap, mapTest.indirectMap);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mapMapOfString, mapOfEnumString, directMap, indirectMap);
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class MapTest {\n");
+        sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
+        sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
+        sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
+        sb.append("    indirectMap: ").append(toIndentedString(indirectMap)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static InnerEnum fromValue(String value) {
-      for (InnerEnum b : InnerEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_MAP_OF_ENUM_STRING = "map_of_enum_string";
-  private Map<String, InnerEnum> mapOfEnumString = null;
-
-  public static final String JSON_PROPERTY_DIRECT_MAP = "direct_map";
-  private Map<String, Boolean> directMap = null;
-
-  public static final String JSON_PROPERTY_INDIRECT_MAP = "indirect_map";
-  private Map<String, Boolean> indirectMap = null;
-
-  public MapTest mapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
-    this.mapMapOfString = mapMapOfString;
-    return this;
-  }
-
-  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
-    if (this.mapMapOfString == null) {
-      this.mapMapOfString = new HashMap<String, Map<String, String>>();
-    }
-    this.mapMapOfString.put(key, mapMapOfStringItem);
-    return this;
-  }
-
-  /**
-   * Get mapMapOfString
-   * @return mapMapOfString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_MAP_OF_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Map<String, String>> getMapMapOfString() {
-    return mapMapOfString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_MAP_OF_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
-    this.mapMapOfString = mapMapOfString;
-  }
-
-  public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
-    this.mapOfEnumString = mapOfEnumString;
-    return this;
-  }
-
-  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
-    if (this.mapOfEnumString == null) {
-      this.mapOfEnumString = new HashMap<String, InnerEnum>();
-    }
-    this.mapOfEnumString.put(key, mapOfEnumStringItem);
-    return this;
-  }
-
-  /**
-   * Get mapOfEnumString
-   * @return mapOfEnumString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP_OF_ENUM_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, InnerEnum> getMapOfEnumString() {
-    return mapOfEnumString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP_OF_ENUM_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
-    this.mapOfEnumString = mapOfEnumString;
-  }
-
-  public MapTest directMap(Map<String, Boolean> directMap) {
-    this.directMap = directMap;
-    return this;
-  }
-
-  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
-    if (this.directMap == null) {
-      this.directMap = new HashMap<String, Boolean>();
-    }
-    this.directMap.put(key, directMapItem);
-    return this;
-  }
-
-  /**
-   * Get directMap
-   * @return directMap
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_DIRECT_MAP)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Boolean> getDirectMap() {
-    return directMap;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DIRECT_MAP)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setDirectMap(Map<String, Boolean> directMap) {
-    this.directMap = directMap;
-  }
-
-  public MapTest indirectMap(Map<String, Boolean> indirectMap) {
-    this.indirectMap = indirectMap;
-    return this;
-  }
-
-  public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
-    if (this.indirectMap == null) {
-      this.indirectMap = new HashMap<String, Boolean>();
-    }
-    this.indirectMap.put(key, indirectMapItem);
-    return this;
-  }
-
-  /**
-   * Get indirectMap
-   * @return indirectMap
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_INDIRECT_MAP)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Boolean> getIndirectMap() {
-    return indirectMap;
-  }
-
-  @JsonProperty(JSON_PROPERTY_INDIRECT_MAP)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setIndirectMap(Map<String, Boolean> indirectMap) {
-    this.indirectMap = indirectMap;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    MapTest mapTest = (MapTest) o;
-    return Objects.equals(this.mapMapOfString, mapTest.mapMapOfString) &&
-        Objects.equals(this.mapOfEnumString, mapTest.mapOfEnumString) &&
-        Objects.equals(this.directMap, mapTest.directMap) &&
-        Objects.equals(this.indirectMap, mapTest.indirectMap);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(mapMapOfString, mapOfEnumString, directMap, indirectMap);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class MapTest {\n");
-    sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
-    sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
-    sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
-    sb.append("    indirectMap: ").append(toIndentedString(indirectMap)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 4f546fae5f9..46e2e81f47a 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -41,133 +41,135 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class MixedPropertiesAndAdditionalPropertiesClass {
-  public static final String JSON_PROPERTY_UUID = "uuid";
-  private UUID uuid;
+    public static final String JSON_PROPERTY_UUID = "uuid";
+    private UUID uuid;
 
-  public static final String JSON_PROPERTY_DATE_TIME = "dateTime";
-  private LocalDateTime dateTime;
+    public static final String JSON_PROPERTY_DATE_TIME = "dateTime";
+    private LocalDateTime dateTime;
 
-  public static final String JSON_PROPERTY_MAP = "map";
-  private Map<String, Animal> map = null;
+    public static final String JSON_PROPERTY_MAP = "map";
+    private Map<String, Animal> map = null;
 
-  public MixedPropertiesAndAdditionalPropertiesClass uuid(UUID uuid) {
-    this.uuid = uuid;
-    return this;
-  }
-
-  /**
-   * Get uuid
-   * @return uuid
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_UUID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public UUID getUuid() {
-    return uuid;
-  }
-
-  @JsonProperty(JSON_PROPERTY_UUID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setUuid(UUID uuid) {
-    this.uuid = uuid;
-  }
-
-  public MixedPropertiesAndAdditionalPropertiesClass dateTime(LocalDateTime dateTime) {
-    this.dateTime = dateTime;
-    return this;
-  }
-
-  /**
-   * Get dateTime
-   * @return dateTime
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_DATE_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-  public LocalDateTime getDateTime() {
-    return dateTime;
-  }
-
-  @JsonProperty(JSON_PROPERTY_DATE_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-  public void setDateTime(LocalDateTime dateTime) {
-    this.dateTime = dateTime;
-  }
-
-  public MixedPropertiesAndAdditionalPropertiesClass map(Map<String, Animal> map) {
-    this.map = map;
-    return this;
-  }
-
-  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
-    if (this.map == null) {
-      this.map = new HashMap<String, Animal>();
+    public MixedPropertiesAndAdditionalPropertiesClass() {
     }
-    this.map.put(key, mapItem);
-    return this;
-  }
-
-  /**
-   * Get map
-   * @return map
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MAP)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Map<String, Animal> getMap() {
-    return map;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MAP)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMap(Map<String, Animal> map) {
-    this.map = map;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public MixedPropertiesAndAdditionalPropertiesClass uuid(UUID uuid) {
+        this.uuid = uuid;
+        return this;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    /**
+     * Get uuid
+     * @return uuid
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_UUID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public UUID getUuid() {
+        return uuid;
     }
-    MixedPropertiesAndAdditionalPropertiesClass mixedPropertiesAndAdditionalPropertiesClass = (MixedPropertiesAndAdditionalPropertiesClass) o;
-    return Objects.equals(this.uuid, mixedPropertiesAndAdditionalPropertiesClass.uuid) &&
-        Objects.equals(this.dateTime, mixedPropertiesAndAdditionalPropertiesClass.dateTime) &&
-        Objects.equals(this.map, mixedPropertiesAndAdditionalPropertiesClass.map);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(uuid, dateTime, map);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
-    sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
-    sb.append("    map: ").append(toIndentedString(map)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    @JsonProperty(JSON_PROPERTY_UUID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setUuid(UUID uuid) {
+        this.uuid = uuid;
     }
-    return o.toString().replace("\n", "\n    ");
+
+    public MixedPropertiesAndAdditionalPropertiesClass dateTime(LocalDateTime dateTime) {
+        this.dateTime = dateTime;
+        return this;
+    }
+
+    /**
+     * Get dateTime
+     * @return dateTime
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_DATE_TIME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public LocalDateTime getDateTime() {
+        return dateTime;
+    }
+
+    @JsonProperty(JSON_PROPERTY_DATE_TIME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public void setDateTime(LocalDateTime dateTime) {
+        this.dateTime = dateTime;
+    }
+
+    public MixedPropertiesAndAdditionalPropertiesClass map(Map<String, Animal> map) {
+        this.map = map;
+        return this;
+    }
+
+    public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+        if (this.map == null) {
+            this.map = new HashMap<String, Animal>();
+        }
+        this.map.put(key, mapItem);
+        return this;
   }
 
+    /**
+     * Get map
+     * @return map
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MAP)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Map<String, Animal> getMap() {
+        return map;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MAP)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMap(Map<String, Animal> map) {
+        this.map = map;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        MixedPropertiesAndAdditionalPropertiesClass mixedPropertiesAndAdditionalPropertiesClass = (MixedPropertiesAndAdditionalPropertiesClass) o;
+        return Objects.equals(this.uuid, mixedPropertiesAndAdditionalPropertiesClass.uuid) &&
+            Objects.equals(this.dateTime, mixedPropertiesAndAdditionalPropertiesClass.dateTime) &&
+            Objects.equals(this.map, mixedPropertiesAndAdditionalPropertiesClass.map);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(uuid, dateTime, map);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
+        sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
+        sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
+        sb.append("    map: ").append(toIndentedString(map)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Model200Response.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Model200Response.java
index 34604b7b3bf..05141ad7076 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Model200Response.java
@@ -35,95 +35,97 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Model200Response {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private Integer name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private Integer name;
 
-  public static final String JSON_PROPERTY_PROPERTY_CLASS = "class";
-  private String propertyClass;
+    public static final String JSON_PROPERTY_PROPERTY_CLASS = "class";
+    private String propertyClass;
 
-  public Model200Response name(Integer name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(Integer name) {
-    this.name = name;
-  }
-
-  public Model200Response propertyClass(String propertyClass) {
-    this.propertyClass = propertyClass;
-    return this;
-  }
-
-  /**
-   * Get propertyClass
-   * @return propertyClass
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getPropertyClass() {
-    return propertyClass;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPropertyClass(String propertyClass) {
-    this.propertyClass = propertyClass;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Model200Response() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Model200Response name(Integer name) {
+        this.name = name;
+        return this;
     }
-    Model200Response _200response = (Model200Response) o;
-    return Objects.equals(this.name, _200response.name) &&
-        Objects.equals(this.propertyClass, _200response.propertyClass);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, propertyClass);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Model200Response {\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(Integer name) {
+        this.name = name;
+    }
+
+    public Model200Response propertyClass(String propertyClass) {
+        this.propertyClass = propertyClass;
+        return this;
+    }
+
+    /**
+     * Get propertyClass
+     * @return propertyClass
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPropertyClass() {
+        return propertyClass;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PROPERTY_CLASS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPropertyClass(String propertyClass) {
+        this.propertyClass = propertyClass;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Model200Response _200response = (Model200Response) o;
+        return Objects.equals(this.name, _200response.name) &&
+            Objects.equals(this.propertyClass, _200response.propertyClass);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, propertyClass);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Model200Response {\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelApiResponse.java
index 7d185d9d0ba..33e9cd2305f 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -35,123 +35,125 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ModelApiResponse {
-  public static final String JSON_PROPERTY_CODE = "code";
-  private Integer code;
+    public static final String JSON_PROPERTY_CODE = "code";
+    private Integer code;
 
-  public static final String JSON_PROPERTY_TYPE = "type";
-  private String type;
+    public static final String JSON_PROPERTY_TYPE = "type";
+    private String type;
 
-  public static final String JSON_PROPERTY_MESSAGE = "message";
-  private String message;
+    public static final String JSON_PROPERTY_MESSAGE = "message";
+    private String message;
 
-  public ModelApiResponse code(Integer code) {
-    this.code = code;
-    return this;
-  }
-
-  /**
-   * Get code
-   * @return code
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_CODE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getCode() {
-    return code;
-  }
-
-  @JsonProperty(JSON_PROPERTY_CODE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setCode(Integer code) {
-    this.code = code;
-  }
-
-  public ModelApiResponse type(String type) {
-    this.type = type;
-    return this;
-  }
-
-  /**
-   * Get type
-   * @return type
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_TYPE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getType() {
-    return type;
-  }
-
-  @JsonProperty(JSON_PROPERTY_TYPE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setType(String type) {
-    this.type = type;
-  }
-
-  public ModelApiResponse message(String message) {
-    this.message = message;
-    return this;
-  }
-
-  /**
-   * Get message
-   * @return message
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MESSAGE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getMessage() {
-    return message;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MESSAGE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMessage(String message) {
-    this.message = message;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ModelApiResponse() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public ModelApiResponse code(Integer code) {
+        this.code = code;
+        return this;
     }
-    ModelApiResponse _apiResponse = (ModelApiResponse) o;
-    return Objects.equals(this.code, _apiResponse.code) &&
-        Objects.equals(this.type, _apiResponse.type) &&
-        Objects.equals(this.message, _apiResponse.message);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(code, type, message);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ModelApiResponse {\n");
-    sb.append("    code: ").append(toIndentedString(code)).append("\n");
-    sb.append("    type: ").append(toIndentedString(type)).append("\n");
-    sb.append("    message: ").append(toIndentedString(message)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get code
+     * @return code
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CODE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getCode() {
+        return code;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CODE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setCode(Integer code) {
+        this.code = code;
+    }
+
+    public ModelApiResponse type(String type) {
+        this.type = type;
+        return this;
+    }
+
+    /**
+     * Get type
+     * @return type
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_TYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getType() {
+        return type;
+    }
+
+    @JsonProperty(JSON_PROPERTY_TYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setType(String type) {
+        this.type = type;
+    }
+
+    public ModelApiResponse message(String message) {
+        this.message = message;
+        return this;
+    }
+
+    /**
+     * Get message
+     * @return message
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MESSAGE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getMessage() {
+        return message;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MESSAGE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMessage(String message) {
+        this.message = message;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ModelApiResponse _apiResponse = (ModelApiResponse) o;
+        return Objects.equals(this.code, _apiResponse.code) &&
+            Objects.equals(this.type, _apiResponse.type) &&
+            Objects.equals(this.message, _apiResponse.message);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(code, type, message);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ModelApiResponse {\n");
+        sb.append("    code: ").append(toIndentedString(code)).append("\n");
+        sb.append("    type: ").append(toIndentedString(type)).append("\n");
+        sb.append("    message: ").append(toIndentedString(message)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelClient.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelClient.java
index af4f73af5cc..936ddd4a2df 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelClient.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelClient.java
@@ -33,67 +33,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ModelClient {
-  public static final String JSON_PROPERTY_CLIENT = "client";
-  private String _client;
+    public static final String JSON_PROPERTY_CLIENT = "client";
+    private String _client;
 
-  public ModelClient _client(String _client) {
-    this._client = _client;
-    return this;
-  }
-
-  /**
-   * Get _client
-   * @return _client
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_CLIENT)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getClient() {
-    return _client;
-  }
-
-  @JsonProperty(JSON_PROPERTY_CLIENT)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setClient(String _client) {
-    this._client = _client;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ModelClient() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public ModelClient _client(String _client) {
+        this._client = _client;
+        return this;
     }
-    ModelClient _client = (ModelClient) o;
-    return Objects.equals(this._client, _client._client);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(_client);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ModelClient {\n");
-    sb.append("    _client: ").append(toIndentedString(_client)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get _client
+     * @return _client
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CLIENT)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getClient() {
+        return _client;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CLIENT)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setClient(String _client) {
+        this._client = _client;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ModelClient _client = (ModelClient) o;
+        return Objects.equals(this._client, _client._client);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(_client);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ModelClient {\n");
+        sb.append("    _client: ").append(toIndentedString(_client)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelFile.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelFile.java
index 7112952184c..b4d40ff9b65 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelFile.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelFile.java
@@ -34,67 +34,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ModelFile {
-  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
-  private String sourceURI;
+    public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+    private String sourceURI;
 
-  public ModelFile sourceURI(String sourceURI) {
-    this.sourceURI = sourceURI;
-    return this;
-  }
-
-  /**
-   * Test capitalization
-   * @return sourceURI
-   **/
-  @Nullable
-  @ApiModelProperty(value = "Test capitalization")
-  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getSourceURI() {
-    return sourceURI;
-  }
-
-  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setSourceURI(String sourceURI) {
-    this.sourceURI = sourceURI;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ModelFile() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public ModelFile sourceURI(String sourceURI) {
+        this.sourceURI = sourceURI;
+        return this;
     }
-    ModelFile _file = (ModelFile) o;
-    return Objects.equals(this.sourceURI, _file.sourceURI);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(sourceURI);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ModelFile {\n");
-    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Test capitalization
+     * @return sourceURI
+     **/
+    @Nullable
+    @ApiModelProperty(value = "Test capitalization")
+    @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getSourceURI() {
+        return sourceURI;
+    }
+
+    @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setSourceURI(String sourceURI) {
+        this.sourceURI = sourceURI;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ModelFile _file = (ModelFile) o;
+        return Objects.equals(this.sourceURI, _file.sourceURI);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(sourceURI);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ModelFile {\n");
+        sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelList.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelList.java
index 9aa652a72ee..6c48df8fe43 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelList.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelList.java
@@ -33,67 +33,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ModelList {
-  public static final String JSON_PROPERTY_123LIST = "123-list";
-  private String _123list;
+    public static final String JSON_PROPERTY_123LIST = "123-list";
+    private String _123list;
 
-  public ModelList _123list(String _123list) {
-    this._123list = _123list;
-    return this;
-  }
-
-  /**
-   * Get _123list
-   * @return _123list
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_123LIST)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String get123list() {
-    return _123list;
-  }
-
-  @JsonProperty(JSON_PROPERTY_123LIST)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void set123list(String _123list) {
-    this._123list = _123list;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ModelList() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public ModelList _123list(String _123list) {
+        this._123list = _123list;
+        return this;
     }
-    ModelList _list = (ModelList) o;
-    return Objects.equals(this._123list, _list._123list);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(_123list);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ModelList {\n");
-    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get _123list
+     * @return _123list
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_123LIST)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String get123list() {
+        return _123list;
+    }
+
+    @JsonProperty(JSON_PROPERTY_123LIST)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void set123list(String _123list) {
+        this._123list = _123list;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ModelList _list = (ModelList) o;
+        return Objects.equals(this._123list, _list._123list);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(_123list);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ModelList {\n");
+        sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelReturn.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelReturn.java
index 2688ecad262..be60946ba7f 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ModelReturn.java
@@ -34,67 +34,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ModelReturn {
-  public static final String JSON_PROPERTY_RETURN = "return";
-  private Integer _return;
+    public static final String JSON_PROPERTY_RETURN = "return";
+    private Integer _return;
 
-  public ModelReturn _return(Integer _return) {
-    this._return = _return;
-    return this;
-  }
-
-  /**
-   * Get _return
-   * @return _return
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_RETURN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getReturn() {
-    return _return;
-  }
-
-  @JsonProperty(JSON_PROPERTY_RETURN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setReturn(Integer _return) {
-    this._return = _return;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ModelReturn() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public ModelReturn _return(Integer _return) {
+        this._return = _return;
+        return this;
     }
-    ModelReturn _return = (ModelReturn) o;
-    return Objects.equals(this._return, _return._return);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(_return);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ModelReturn {\n");
-    sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get _return
+     * @return _return
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_RETURN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getReturn() {
+        return _return;
+    }
+
+    @JsonProperty(JSON_PROPERTY_RETURN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setReturn(Integer _return) {
+        this._return = _return;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ModelReturn _return = (ModelReturn) o;
+        return Objects.equals(this._return, _return._return);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(_return);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ModelReturn {\n");
+        sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Name.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Name.java
index 018d3cf558e..401002e5de2 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Name.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Name.java
@@ -37,129 +37,131 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Name {
-  public static final String JSON_PROPERTY_NAME = "name";
-  private Integer name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private Integer name;
 
-  public static final String JSON_PROPERTY_SNAKE_CASE = "snake_case";
-  private Integer snakeCase;
+    public static final String JSON_PROPERTY_SNAKE_CASE = "snake_case";
+    private Integer snakeCase;
 
-  public static final String JSON_PROPERTY_PROPERTY = "property";
-  private String property;
+    public static final String JSON_PROPERTY_PROPERTY = "property";
+    private String property;
 
-  public static final String JSON_PROPERTY_123NUMBER = "123Number";
-  private Integer _123number;
+    public static final String JSON_PROPERTY_123NUMBER = "123Number";
+    private Integer _123number;
 
-  public Name name(Integer name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Integer getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setName(Integer name) {
-    this.name = name;
-  }
-
-  /**
-   * Get snakeCase
-   * @return snakeCase
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_SNAKE_CASE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getSnakeCase() {
-    return snakeCase;
-  }
-
-  public Name property(String property) {
-    this.property = property;
-    return this;
-  }
-
-  /**
-   * Get property
-   * @return property
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PROPERTY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getProperty() {
-    return property;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PROPERTY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setProperty(String property) {
-    this.property = property;
-  }
-
-  /**
-   * Get _123number
-   * @return _123number
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_123NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer get123number() {
-    return _123number;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Name() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Name name(Integer name) {
+        this.name = name;
+        return this;
     }
-    Name name = (Name) o;
-    return Objects.equals(this.name, name.name) &&
-        Objects.equals(this.snakeCase, name.snakeCase) &&
-        Objects.equals(this.property, name.property) &&
-        Objects.equals(this._123number, name._123number);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(name, snakeCase, property, _123number);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Name {\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
-    sb.append("    property: ").append(toIndentedString(property)).append("\n");
-    sb.append("    _123number: ").append(toIndentedString(_123number)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get name
+     * @return name
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Integer getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setName(Integer name) {
+        this.name = name;
+    }
+
+    /**
+     * Get snakeCase
+     * @return snakeCase
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_SNAKE_CASE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getSnakeCase() {
+        return snakeCase;
+    }
+
+    public Name property(String property) {
+        this.property = property;
+        return this;
+    }
+
+    /**
+     * Get property
+     * @return property
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PROPERTY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getProperty() {
+        return property;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PROPERTY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setProperty(String property) {
+        this.property = property;
+    }
+
+    /**
+     * Get _123number
+     * @return _123number
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_123NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer get123number() {
+        return _123number;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Name name = (Name) o;
+        return Objects.equals(this.name, name.name) &&
+            Objects.equals(this.snakeCase, name.snakeCase) &&
+            Objects.equals(this.property, name.property) &&
+            Objects.equals(this._123number, name._123number);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, snakeCase, property, _123number);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Name {\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
+        sb.append("    property: ").append(toIndentedString(property)).append("\n");
+        sb.append("    _123number: ").append(toIndentedString(_123number)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/NumberOnly.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/NumberOnly.java
index e4197f390e5..9b3e86e34e3 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/NumberOnly.java
@@ -34,67 +34,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class NumberOnly {
-  public static final String JSON_PROPERTY_JUST_NUMBER = "JustNumber";
-  private BigDecimal justNumber;
+    public static final String JSON_PROPERTY_JUST_NUMBER = "JustNumber";
+    private BigDecimal justNumber;
 
-  public NumberOnly justNumber(BigDecimal justNumber) {
-    this.justNumber = justNumber;
-    return this;
-  }
-
-  /**
-   * Get justNumber
-   * @return justNumber
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_JUST_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getJustNumber() {
-    return justNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_JUST_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setJustNumber(BigDecimal justNumber) {
-    this.justNumber = justNumber;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public NumberOnly() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public NumberOnly justNumber(BigDecimal justNumber) {
+        this.justNumber = justNumber;
+        return this;
     }
-    NumberOnly numberOnly = (NumberOnly) o;
-    return Objects.equals(this.justNumber, numberOnly.justNumber);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(justNumber);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class NumberOnly {\n");
-    sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get justNumber
+     * @return justNumber
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_JUST_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getJustNumber() {
+        return justNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_JUST_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setJustNumber(BigDecimal justNumber) {
+        this.justNumber = justNumber;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        NumberOnly numberOnly = (NumberOnly) o;
+        return Objects.equals(this.justNumber, numberOnly.justNumber);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(justNumber);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class NumberOnly {\n");
+        sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Order.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Order.java
index 8ecdbda1260..801a4d52c66 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Order.java
@@ -39,243 +39,245 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Order {
-  public static final String JSON_PROPERTY_ID = "id";
-  private Long id;
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
 
-  public static final String JSON_PROPERTY_PET_ID = "petId";
-  private Long petId;
+    public static final String JSON_PROPERTY_PET_ID = "petId";
+    private Long petId;
 
-  public static final String JSON_PROPERTY_QUANTITY = "quantity";
-  private Integer quantity;
+    public static final String JSON_PROPERTY_QUANTITY = "quantity";
+    private Integer quantity;
 
-  public static final String JSON_PROPERTY_SHIP_DATE = "shipDate";
-  private LocalDateTime shipDate;
+    public static final String JSON_PROPERTY_SHIP_DATE = "shipDate";
+    private LocalDateTime shipDate;
 
-  /**
-   * Order Status
-   */
-  public enum StatusEnum {
-    PLACED("placed"),
-    APPROVED("approved"),
-    DELIVERED("delivered");
+    /**
+     * Order Status
+     */
+    public enum StatusEnum {
+        PLACED("placed"),
+        APPROVED("approved"),
+        DELIVERED("delivered");
 
-    private String value;
+        private String value;
 
-    StatusEnum(String value) {
-      this.value = value;
+        StatusEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static StatusEnum fromValue(String value) {
+            for (StatusEnum b : StatusEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_STATUS = "status";
+    private StatusEnum status;
+
+    public static final String JSON_PROPERTY_COMPLETE = "complete";
+    private Boolean complete = false;
+
+    public Order() {
+    }
+    public Order id(Long id) {
+        this.id = id;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Order petId(Long petId) {
+        this.petId = petId;
+        return this;
+    }
+
+    /**
+     * Get petId
+     * @return petId
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PET_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getPetId() {
+        return petId;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PET_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPetId(Long petId) {
+        this.petId = petId;
+    }
+
+    public Order quantity(Integer quantity) {
+        this.quantity = quantity;
+        return this;
+    }
+
+    /**
+     * Get quantity
+     * @return quantity
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_QUANTITY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getQuantity() {
+        return quantity;
+    }
+
+    @JsonProperty(JSON_PROPERTY_QUANTITY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setQuantity(Integer quantity) {
+        this.quantity = quantity;
+    }
+
+    public Order shipDate(LocalDateTime shipDate) {
+        this.shipDate = shipDate;
+        return this;
+    }
+
+    /**
+     * Get shipDate
+     * @return shipDate
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_SHIP_DATE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public LocalDateTime getShipDate() {
+        return shipDate;
+    }
+
+    @JsonProperty(JSON_PROPERTY_SHIP_DATE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public void setShipDate(LocalDateTime shipDate) {
+        this.shipDate = shipDate;
+    }
+
+    public Order status(StatusEnum status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * Order Status
+     * @return status
+     **/
+    @Nullable
+    @ApiModelProperty(value = "Order Status")
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public StatusEnum getStatus() {
+        return status;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setStatus(StatusEnum status) {
+        this.status = status;
+    }
+
+    public Order complete(Boolean complete) {
+        this.complete = complete;
+        return this;
+    }
+
+    /**
+     * Get complete
+     * @return complete
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_COMPLETE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getComplete() {
+        return complete;
+    }
+
+    @JsonProperty(JSON_PROPERTY_COMPLETE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setComplete(Boolean complete) {
+        this.complete = complete;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Order order = (Order) o;
+        return Objects.equals(this.id, order.id) &&
+            Objects.equals(this.petId, order.petId) &&
+            Objects.equals(this.quantity, order.quantity) &&
+            Objects.equals(this.shipDate, order.shipDate) &&
+            Objects.equals(this.status, order.status) &&
+            Objects.equals(this.complete, order.complete);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, petId, quantity, shipDate, status, complete);
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Order {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
+        sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
+        sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
+        sb.append("    status: ").append(toIndentedString(status)).append("\n");
+        sb.append("    complete: ").append(toIndentedString(complete)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static StatusEnum fromValue(String value) {
-      for (StatusEnum b : StatusEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_STATUS = "status";
-  private StatusEnum status;
-
-  public static final String JSON_PROPERTY_COMPLETE = "complete";
-  private Boolean complete = false;
-
-  public Order id(Long id) {
-    this.id = id;
-    return this;
-  }
-
-  /**
-   * Get id
-   * @return id
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getId() {
-    return id;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setId(Long id) {
-    this.id = id;
-  }
-
-  public Order petId(Long petId) {
-    this.petId = petId;
-    return this;
-  }
-
-  /**
-   * Get petId
-   * @return petId
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PET_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getPetId() {
-    return petId;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PET_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPetId(Long petId) {
-    this.petId = petId;
-  }
-
-  public Order quantity(Integer quantity) {
-    this.quantity = quantity;
-    return this;
-  }
-
-  /**
-   * Get quantity
-   * @return quantity
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_QUANTITY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getQuantity() {
-    return quantity;
-  }
-
-  @JsonProperty(JSON_PROPERTY_QUANTITY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setQuantity(Integer quantity) {
-    this.quantity = quantity;
-  }
-
-  public Order shipDate(LocalDateTime shipDate) {
-    this.shipDate = shipDate;
-    return this;
-  }
-
-  /**
-   * Get shipDate
-   * @return shipDate
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_SHIP_DATE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-  public LocalDateTime getShipDate() {
-    return shipDate;
-  }
-
-  @JsonProperty(JSON_PROPERTY_SHIP_DATE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
-  public void setShipDate(LocalDateTime shipDate) {
-    this.shipDate = shipDate;
-  }
-
-  public Order status(StatusEnum status) {
-    this.status = status;
-    return this;
-  }
-
-  /**
-   * Order Status
-   * @return status
-   **/
-  @Nullable
-  @ApiModelProperty(value = "Order Status")
-  @JsonProperty(JSON_PROPERTY_STATUS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public StatusEnum getStatus() {
-    return status;
-  }
-
-  @JsonProperty(JSON_PROPERTY_STATUS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setStatus(StatusEnum status) {
-    this.status = status;
-  }
-
-  public Order complete(Boolean complete) {
-    this.complete = complete;
-    return this;
-  }
-
-  /**
-   * Get complete
-   * @return complete
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_COMPLETE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getComplete() {
-    return complete;
-  }
-
-  @JsonProperty(JSON_PROPERTY_COMPLETE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setComplete(Boolean complete) {
-    this.complete = complete;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    Order order = (Order) o;
-    return Objects.equals(this.id, order.id) &&
-        Objects.equals(this.petId, order.petId) &&
-        Objects.equals(this.quantity, order.quantity) &&
-        Objects.equals(this.shipDate, order.shipDate) &&
-        Objects.equals(this.status, order.status) &&
-        Objects.equals(this.complete, order.complete);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(id, petId, quantity, shipDate, status, complete);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Order {\n");
-    sb.append("    id: ").append(toIndentedString(id)).append("\n");
-    sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
-    sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
-    sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
-    sb.append("    status: ").append(toIndentedString(status)).append("\n");
-    sb.append("    complete: ").append(toIndentedString(complete)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterComposite.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterComposite.java
index 4c41ddc658f..96fd146e253 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterComposite.java
@@ -36,123 +36,125 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class OuterComposite {
-  public static final String JSON_PROPERTY_MY_NUMBER = "my_number";
-  private BigDecimal myNumber;
+    public static final String JSON_PROPERTY_MY_NUMBER = "my_number";
+    private BigDecimal myNumber;
 
-  public static final String JSON_PROPERTY_MY_STRING = "my_string";
-  private String myString;
+    public static final String JSON_PROPERTY_MY_STRING = "my_string";
+    private String myString;
 
-  public static final String JSON_PROPERTY_MY_BOOLEAN = "my_boolean";
-  private Boolean myBoolean;
+    public static final String JSON_PROPERTY_MY_BOOLEAN = "my_boolean";
+    private Boolean myBoolean;
 
-  public OuterComposite myNumber(BigDecimal myNumber) {
-    this.myNumber = myNumber;
-    return this;
-  }
-
-  /**
-   * Get myNumber
-   * @return myNumber
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getMyNumber() {
-    return myNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MY_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMyNumber(BigDecimal myNumber) {
-    this.myNumber = myNumber;
-  }
-
-  public OuterComposite myString(String myString) {
-    this.myString = myString;
-    return this;
-  }
-
-  /**
-   * Get myString
-   * @return myString
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MY_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getMyString() {
-    return myString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MY_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMyString(String myString) {
-    this.myString = myString;
-  }
-
-  public OuterComposite myBoolean(Boolean myBoolean) {
-    this.myBoolean = myBoolean;
-    return this;
-  }
-
-  /**
-   * Get myBoolean
-   * @return myBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_MY_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getMyBoolean() {
-    return myBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_MY_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setMyBoolean(Boolean myBoolean) {
-    this.myBoolean = myBoolean;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public OuterComposite() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public OuterComposite myNumber(BigDecimal myNumber) {
+        this.myNumber = myNumber;
+        return this;
     }
-    OuterComposite outerComposite = (OuterComposite) o;
-    return Objects.equals(this.myNumber, outerComposite.myNumber) &&
-        Objects.equals(this.myString, outerComposite.myString) &&
-        Objects.equals(this.myBoolean, outerComposite.myBoolean);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(myNumber, myString, myBoolean);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class OuterComposite {\n");
-    sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
-    sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
-    sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get myNumber
+     * @return myNumber
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getMyNumber() {
+        return myNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MY_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMyNumber(BigDecimal myNumber) {
+        this.myNumber = myNumber;
+    }
+
+    public OuterComposite myString(String myString) {
+        this.myString = myString;
+        return this;
+    }
+
+    /**
+     * Get myString
+     * @return myString
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MY_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getMyString() {
+        return myString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MY_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMyString(String myString) {
+        this.myString = myString;
+    }
+
+    public OuterComposite myBoolean(Boolean myBoolean) {
+        this.myBoolean = myBoolean;
+        return this;
+    }
+
+    /**
+     * Get myBoolean
+     * @return myBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MY_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getMyBoolean() {
+        return myBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MY_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMyBoolean(Boolean myBoolean) {
+        this.myBoolean = myBoolean;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        OuterComposite outerComposite = (OuterComposite) o;
+        return Objects.equals(this.myNumber, outerComposite.myNumber) &&
+            Objects.equals(this.myString, outerComposite.myString) &&
+            Objects.equals(this.myBoolean, outerComposite.myBoolean);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(myNumber, myString, myBoolean);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class OuterComposite {\n");
+        sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
+        sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
+        sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterEnum.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterEnum.java
index 76fe37007e9..5cf96d10932 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/OuterEnum.java
@@ -29,34 +29,34 @@ import com.fasterxml.jackson.annotation.JsonValue;
  */
 @Introspected
 public enum OuterEnum {
-  PLACED("placed"),
-  APPROVED("approved"),
-  DELIVERED("delivered");
+    PLACED("placed"),
+    APPROVED("approved"),
+    DELIVERED("delivered");
 
-  private String value;
+    private String value;
 
-  OuterEnum(String value) {
-    this.value = value;
-  }
-
-  @JsonValue
-  public String getValue() {
-    return value;
-  }
-
-  @Override
-  public String toString() {
-    return String.valueOf(value);
-  }
-
-  @JsonCreator
-  public static OuterEnum fromValue(String value) {
-    for (OuterEnum b : OuterEnum.values()) {
-      if (b.value.equals(value)) {
-        return b;
-      }
+    OuterEnum(String value) {
+        this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static OuterEnum fromValue(String value) {
+        for (OuterEnum b : OuterEnum.values()) {
+            if (b.value.equals(value)) {
+                return b;
+            }
+        }
+        throw new IllegalArgumentException("Unexpected value '" + value + "'");
     }
-    throw new IllegalArgumentException("Unexpected value '" + value + "'");
-  }
 }
 
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Pet.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Pet.java
index f142a57afdd..fa4dec4b495 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Pet.java
@@ -45,257 +45,258 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Pet {
-  public static final String JSON_PROPERTY_ID = "id";
-  private Long id;
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
 
-  public static final String JSON_PROPERTY_CATEGORY = "category";
-  private Category category;
+    public static final String JSON_PROPERTY_CATEGORY = "category";
+    private Category category;
 
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public static final String JSON_PROPERTY_PHOTO_URLS = "photoUrls";
-  private Set<String> photoUrls = new LinkedHashSet<String>();
+    public static final String JSON_PROPERTY_PHOTO_URLS = "photoUrls";
+    private Set<String> photoUrls = new LinkedHashSet<String>();
 
-  public static final String JSON_PROPERTY_TAGS = "tags";
-  private List<Tag> tags = null;
+    public static final String JSON_PROPERTY_TAGS = "tags";
+    private List<Tag> tags = null;
 
-  /**
-   * pet status in the store
-   */
-  public enum StatusEnum {
-    AVAILABLE("available"),
-    PENDING("pending"),
-    SOLD("sold");
+    /**
+     * pet status in the store
+     */
+    public enum StatusEnum {
+        AVAILABLE("available"),
+        PENDING("pending"),
+        SOLD("sold");
 
-    private String value;
+        private String value;
 
-    StatusEnum(String value) {
-      this.value = value;
+        StatusEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static StatusEnum fromValue(String value) {
+            for (StatusEnum b : StatusEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_STATUS = "status";
+    private StatusEnum status;
+
+    public Pet() {
+    }
+    public Pet id(Long id) {
+        this.id = id;
+        return this;
     }
 
-    @JsonValue
-    public String getValue() {
-      return value;
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Pet category(Category category) {
+        this.category = category;
+        return this;
+    }
+
+    /**
+     * Get category
+     * @return category
+     **/
+    @Valid
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CATEGORY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Category getCategory() {
+        return category;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CATEGORY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setCategory(Category category) {
+        this.category = category;
+    }
+
+    public Pet name(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get name
+     * @return name
+     **/
+    @NotNull
+    @ApiModelProperty(example = "doggie", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    public Pet photoUrls(Set<String> photoUrls) {
+        this.photoUrls = photoUrls;
+        return this;
+    }
+
+    public Pet addPhotoUrlsItem(String photoUrlsItem) {
+        this.photoUrls.add(photoUrlsItem);
+        return this;
+    }
+
+    /**
+     * Get photoUrls
+     * @return photoUrls
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Set<String> getPhotoUrls() {
+        return photoUrls;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       @JsonDeserialize(as = LinkedHashSet.class)
+       public void setPhotoUrls(Set<String> photoUrls) {
+        this.photoUrls = photoUrls;
+    }
+
+    public Pet tags(List<Tag> tags) {
+        this.tags = tags;
+        return this;
+    }
+
+    public Pet addTagsItem(Tag tagsItem) {
+        if (this.tags == null) {
+            this.tags = new ArrayList<Tag>();
+        }
+        this.tags.add(tagsItem);
+        return this;
+    }
+
+    /**
+     * Get tags
+     * @return tags
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_TAGS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Tag> getTags() {
+        return tags;
+    }
+
+    @JsonProperty(JSON_PROPERTY_TAGS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setTags(List<Tag> tags) {
+        this.tags = tags;
+    }
+
+    public Pet status(StatusEnum status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * pet status in the store
+     * @return status
+     **/
+    @Nullable
+    @ApiModelProperty(value = "pet status in the store")
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public StatusEnum getStatus() {
+        return status;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setStatus(StatusEnum status) {
+        this.status = status;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Pet pet = (Pet) o;
+        return Objects.equals(this.id, pet.id) &&
+            Objects.equals(this.category, pet.category) &&
+            Objects.equals(this.name, pet.name) &&
+            Objects.equals(this.photoUrls, pet.photoUrls) &&
+            Objects.equals(this.tags, pet.tags) &&
+            Objects.equals(this.status, pet.status);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, category, name, photoUrls, tags, status);
     }
 
     @Override
     public String toString() {
-      return String.valueOf(value);
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Pet {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    category: ").append(toIndentedString(category)).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+        sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+        sb.append("    status: ").append(toIndentedString(status)).append("\n");
+        sb.append("}");
+        return sb.toString();
     }
 
-    @JsonCreator
-    public static StatusEnum fromValue(String value) {
-      for (StatusEnum b : StatusEnum.values()) {
-        if (b.value.equals(value)) {
-          return b;
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
         }
-      }
-      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        return o.toString().replace("\n", "\n    ");
     }
-  }
-  public static final String JSON_PROPERTY_STATUS = "status";
-  private StatusEnum status;
-
-  public Pet id(Long id) {
-    this.id = id;
-    return this;
-  }
-
-  /**
-   * Get id
-   * @return id
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getId() {
-    return id;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setId(Long id) {
-    this.id = id;
-  }
-
-  public Pet category(Category category) {
-    this.category = category;
-    return this;
-  }
-
-  /**
-   * Get category
-   * @return category
-   **/
-  @Valid
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_CATEGORY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Category getCategory() {
-    return category;
-  }
-
-  @JsonProperty(JSON_PROPERTY_CATEGORY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setCategory(Category category) {
-    this.category = category;
-  }
-
-  public Pet name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @NotNull
-  @ApiModelProperty(example = "doggie", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  public Pet photoUrls(Set<String> photoUrls) {
-    this.photoUrls = photoUrls;
-    return this;
-  }
-
-  public Pet addPhotoUrlsItem(String photoUrlsItem) {
-    this.photoUrls.add(photoUrlsItem);
-    return this;
-  }
-
-  /**
-   * Get photoUrls
-   * @return photoUrls
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Set<String> getPhotoUrls() {
-    return photoUrls;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-
-  @JsonDeserialize(as = LinkedHashSet.class)
-  public void setPhotoUrls(Set<String> photoUrls) {
-    this.photoUrls = photoUrls;
-  }
-
-  public Pet tags(List<Tag> tags) {
-    this.tags = tags;
-    return this;
-  }
-
-  public Pet addTagsItem(Tag tagsItem) {
-    if (this.tags == null) {
-      this.tags = new ArrayList<Tag>();
-    }
-    this.tags.add(tagsItem);
-    return this;
-  }
-
-  /**
-   * Get tags
-   * @return tags
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_TAGS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Tag> getTags() {
-    return tags;
-  }
-
-  @JsonProperty(JSON_PROPERTY_TAGS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setTags(List<Tag> tags) {
-    this.tags = tags;
-  }
-
-  public Pet status(StatusEnum status) {
-    this.status = status;
-    return this;
-  }
-
-  /**
-   * pet status in the store
-   * @return status
-   **/
-  @Nullable
-  @ApiModelProperty(value = "pet status in the store")
-  @JsonProperty(JSON_PROPERTY_STATUS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public StatusEnum getStatus() {
-    return status;
-  }
-
-  @JsonProperty(JSON_PROPERTY_STATUS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setStatus(StatusEnum status) {
-    this.status = status;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
-    }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
-    }
-    Pet pet = (Pet) o;
-    return Objects.equals(this.id, pet.id) &&
-        Objects.equals(this.category, pet.category) &&
-        Objects.equals(this.name, pet.name) &&
-        Objects.equals(this.photoUrls, pet.photoUrls) &&
-        Objects.equals(this.tags, pet.tags) &&
-        Objects.equals(this.status, pet.status);
-  }
-
-  @Override
-  public int hashCode() {
-    return Objects.hash(id, category, name, photoUrls, tags, status);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Pet {\n");
-    sb.append("    id: ").append(toIndentedString(id)).append("\n");
-    sb.append("    category: ").append(toIndentedString(category)).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
-    sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
-    sb.append("    status: ").append(toIndentedString(status)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
-    }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index a9827ceca00..38133c13c8e 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -34,84 +34,86 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class ReadOnlyFirst {
-  public static final String JSON_PROPERTY_BAR = "bar";
-  private String bar;
+    public static final String JSON_PROPERTY_BAR = "bar";
+    private String bar;
 
-  public static final String JSON_PROPERTY_BAZ = "baz";
-  private String baz;
+    public static final String JSON_PROPERTY_BAZ = "baz";
+    private String baz;
 
-  /**
-   * Get bar
-   * @return bar
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BAR)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getBar() {
-    return bar;
-  }
-
-  public ReadOnlyFirst baz(String baz) {
-    this.baz = baz;
-    return this;
-  }
-
-  /**
-   * Get baz
-   * @return baz
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_BAZ)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getBaz() {
-    return baz;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BAZ)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setBaz(String baz) {
-    this.baz = baz;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public ReadOnlyFirst() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    /**
+     * Get bar
+     * @return bar
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BAR)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getBar() {
+        return bar;
     }
-    ReadOnlyFirst readOnlyFirst = (ReadOnlyFirst) o;
-    return Objects.equals(this.bar, readOnlyFirst.bar) &&
-        Objects.equals(this.baz, readOnlyFirst.baz);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(bar, baz);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class ReadOnlyFirst {\n");
-    sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
-    sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    public ReadOnlyFirst baz(String baz) {
+        this.baz = baz;
+        return this;
+    }
+
+    /**
+     * Get baz
+     * @return baz
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_BAZ)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getBaz() {
+        return baz;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BAZ)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setBaz(String baz) {
+        this.baz = baz;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ReadOnlyFirst readOnlyFirst = (ReadOnlyFirst) o;
+        return Objects.equals(this.bar, readOnlyFirst.bar) &&
+            Objects.equals(this.baz, readOnlyFirst.baz);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(bar, baz);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ReadOnlyFirst {\n");
+        sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
+        sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/SpecialModelName.java
index 0845ebff638..d0a8db4de8b 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -33,67 +33,69 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class SpecialModelName {
-  public static final String JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME = "$special[property.name]";
-  private Long $specialPropertyName;
+    public static final String JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME = "$special[property.name]";
+    private Long $specialPropertyName;
 
-  public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
-    this.$specialPropertyName = $specialPropertyName;
-    return this;
-  }
-
-  /**
-   * Get $specialPropertyName
-   * @return $specialPropertyName
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long get$SpecialPropertyName() {
-    return $specialPropertyName;
-  }
-
-  @JsonProperty(JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void set$SpecialPropertyName(Long $specialPropertyName) {
-    this.$specialPropertyName = $specialPropertyName;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public SpecialModelName() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public SpecialModelName $specialPropertyName(Long $specialPropertyName) {
+        this.$specialPropertyName = $specialPropertyName;
+        return this;
     }
-    SpecialModelName $specialModelName = (SpecialModelName) o;
-    return Objects.equals(this.$specialPropertyName, $specialModelName.$specialPropertyName);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash($specialPropertyName);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class SpecialModelName {\n");
-    sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get $specialPropertyName
+     * @return $specialPropertyName
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long get$SpecialPropertyName() {
+        return $specialPropertyName;
+    }
+
+    @JsonProperty(JSON_PROPERTY_$_SPECIAL_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void set$SpecialPropertyName(Long $specialPropertyName) {
+        this.$specialPropertyName = $specialPropertyName;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        SpecialModelName $specialModelName = (SpecialModelName) o;
+        return Objects.equals(this.$specialPropertyName, $specialModelName.$specialPropertyName);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash($specialPropertyName);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class SpecialModelName {\n");
+        sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Tag.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Tag.java
index eee95fd360d..7163b186331 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/Tag.java
@@ -34,95 +34,97 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class Tag {
-  public static final String JSON_PROPERTY_ID = "id";
-  private Long id;
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
 
-  public static final String JSON_PROPERTY_NAME = "name";
-  private String name;
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
 
-  public Tag id(Long id) {
-    this.id = id;
-    return this;
-  }
-
-  /**
-   * Get id
-   * @return id
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getId() {
-    return id;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setId(Long id) {
-    this.id = id;
-  }
-
-  public Tag name(String name) {
-    this.name = name;
-    return this;
-  }
-
-  /**
-   * Get name
-   * @return name
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getName() {
-    return name;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setName(String name) {
-    this.name = name;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public Tag() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public Tag id(Long id) {
+        this.id = id;
+        return this;
     }
-    Tag tag = (Tag) o;
-    return Objects.equals(this.id, tag.id) &&
-        Objects.equals(this.name, tag.name);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(id, name);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class Tag {\n");
-    sb.append("    id: ").append(toIndentedString(id)).append("\n");
-    sb.append("    name: ").append(toIndentedString(name)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Tag name(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Tag tag = (Tag) o;
+        return Objects.equals(this.id, tag.id) &&
+            Objects.equals(this.name, tag.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Tag {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 7475ae2ec45..47b47122e39 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -40,184 +40,186 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class TypeHolderDefault {
-  public static final String JSON_PROPERTY_STRING_ITEM = "string_item";
-  private String stringItem = "what";
+    public static final String JSON_PROPERTY_STRING_ITEM = "string_item";
+    private String stringItem = "what";
 
-  public static final String JSON_PROPERTY_NUMBER_ITEM = "number_item";
-  private BigDecimal numberItem;
+    public static final String JSON_PROPERTY_NUMBER_ITEM = "number_item";
+    private BigDecimal numberItem;
 
-  public static final String JSON_PROPERTY_INTEGER_ITEM = "integer_item";
-  private Integer integerItem;
+    public static final String JSON_PROPERTY_INTEGER_ITEM = "integer_item";
+    private Integer integerItem;
 
-  public static final String JSON_PROPERTY_BOOL_ITEM = "bool_item";
-  private Boolean boolItem = true;
+    public static final String JSON_PROPERTY_BOOL_ITEM = "bool_item";
+    private Boolean boolItem = true;
 
-  public static final String JSON_PROPERTY_ARRAY_ITEM = "array_item";
-  private List<Integer> arrayItem = new ArrayList<Integer>();
+    public static final String JSON_PROPERTY_ARRAY_ITEM = "array_item";
+    private List<Integer> arrayItem = new ArrayList<Integer>();
 
-  public TypeHolderDefault stringItem(String stringItem) {
-    this.stringItem = stringItem;
-    return this;
-  }
-
-  /**
-   * Get stringItem
-   * @return stringItem
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_STRING_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public String getStringItem() {
-    return stringItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_STRING_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setStringItem(String stringItem) {
-    this.stringItem = stringItem;
-  }
-
-  public TypeHolderDefault numberItem(BigDecimal numberItem) {
-    this.numberItem = numberItem;
-    return this;
-  }
-
-  /**
-   * Get numberItem
-   * @return numberItem
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public BigDecimal getNumberItem() {
-    return numberItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setNumberItem(BigDecimal numberItem) {
-    this.numberItem = numberItem;
-  }
-
-  public TypeHolderDefault integerItem(Integer integerItem) {
-    this.integerItem = integerItem;
-    return this;
-  }
-
-  /**
-   * Get integerItem
-   * @return integerItem
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Integer getIntegerItem() {
-    return integerItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setIntegerItem(Integer integerItem) {
-    this.integerItem = integerItem;
-  }
-
-  public TypeHolderDefault boolItem(Boolean boolItem) {
-    this.boolItem = boolItem;
-    return this;
-  }
-
-  /**
-   * Get boolItem
-   * @return boolItem
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Boolean getBoolItem() {
-    return boolItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setBoolItem(Boolean boolItem) {
-    this.boolItem = boolItem;
-  }
-
-  public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
-    this.arrayItem = arrayItem;
-    return this;
-  }
-
-  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
-    this.arrayItem.add(arrayItemItem);
-    return this;
-  }
-
-  /**
-   * Get arrayItem
-   * @return arrayItem
-   **/
-  @NotNull
-  @ApiModelProperty(required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public List<Integer> getArrayItem() {
-    return arrayItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setArrayItem(List<Integer> arrayItem) {
-    this.arrayItem = arrayItem;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public TypeHolderDefault() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public TypeHolderDefault stringItem(String stringItem) {
+        this.stringItem = stringItem;
+        return this;
     }
-    TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
-    return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
-        Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
-        Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
-        Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
-        Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class TypeHolderDefault {\n");
-    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
-    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
-    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
-    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
-    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get stringItem
+     * @return stringItem
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_STRING_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getStringItem() {
+        return stringItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STRING_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setStringItem(String stringItem) {
+        this.stringItem = stringItem;
+    }
+
+    public TypeHolderDefault numberItem(BigDecimal numberItem) {
+        this.numberItem = numberItem;
+        return this;
+    }
+
+    /**
+     * Get numberItem
+     * @return numberItem
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public BigDecimal getNumberItem() {
+        return numberItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setNumberItem(BigDecimal numberItem) {
+        this.numberItem = numberItem;
+    }
+
+    public TypeHolderDefault integerItem(Integer integerItem) {
+        this.integerItem = integerItem;
+        return this;
+    }
+
+    /**
+     * Get integerItem
+     * @return integerItem
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Integer getIntegerItem() {
+        return integerItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setIntegerItem(Integer integerItem) {
+        this.integerItem = integerItem;
+    }
+
+    public TypeHolderDefault boolItem(Boolean boolItem) {
+        this.boolItem = boolItem;
+        return this;
+    }
+
+    /**
+     * Get boolItem
+     * @return boolItem
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Boolean getBoolItem() {
+        return boolItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setBoolItem(Boolean boolItem) {
+        this.boolItem = boolItem;
+    }
+
+    public TypeHolderDefault arrayItem(List<Integer> arrayItem) {
+        this.arrayItem = arrayItem;
+        return this;
+    }
+
+    public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+        this.arrayItem.add(arrayItemItem);
+        return this;
+    }
+
+    /**
+     * Get arrayItem
+     * @return arrayItem
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public List<Integer> getArrayItem() {
+        return arrayItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setArrayItem(List<Integer> arrayItem) {
+        this.arrayItem = arrayItem;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        TypeHolderDefault typeHolderDefault = (TypeHolderDefault) o;
+        return Objects.equals(this.stringItem, typeHolderDefault.stringItem) &&
+            Objects.equals(this.numberItem, typeHolderDefault.numberItem) &&
+            Objects.equals(this.integerItem, typeHolderDefault.integerItem) &&
+            Objects.equals(this.boolItem, typeHolderDefault.boolItem) &&
+            Objects.equals(this.arrayItem, typeHolderDefault.arrayItem);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(stringItem, numberItem, integerItem, boolItem, arrayItem);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class TypeHolderDefault {\n");
+        sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+        sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+        sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+        sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+        sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderExample.java
index 539ef489b97..be1a7351861 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -41,212 +41,214 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class TypeHolderExample {
-  public static final String JSON_PROPERTY_STRING_ITEM = "string_item";
-  private String stringItem;
+    public static final String JSON_PROPERTY_STRING_ITEM = "string_item";
+    private String stringItem;
 
-  public static final String JSON_PROPERTY_NUMBER_ITEM = "number_item";
-  private BigDecimal numberItem;
+    public static final String JSON_PROPERTY_NUMBER_ITEM = "number_item";
+    private BigDecimal numberItem;
 
-  public static final String JSON_PROPERTY_FLOAT_ITEM = "float_item";
-  private Float floatItem;
+    public static final String JSON_PROPERTY_FLOAT_ITEM = "float_item";
+    private Float floatItem;
 
-  public static final String JSON_PROPERTY_INTEGER_ITEM = "integer_item";
-  private Integer integerItem;
+    public static final String JSON_PROPERTY_INTEGER_ITEM = "integer_item";
+    private Integer integerItem;
 
-  public static final String JSON_PROPERTY_BOOL_ITEM = "bool_item";
-  private Boolean boolItem;
+    public static final String JSON_PROPERTY_BOOL_ITEM = "bool_item";
+    private Boolean boolItem;
 
-  public static final String JSON_PROPERTY_ARRAY_ITEM = "array_item";
-  private List<Integer> arrayItem = new ArrayList<Integer>();
+    public static final String JSON_PROPERTY_ARRAY_ITEM = "array_item";
+    private List<Integer> arrayItem = new ArrayList<Integer>();
 
-  public TypeHolderExample stringItem(String stringItem) {
-    this.stringItem = stringItem;
-    return this;
-  }
-
-  /**
-   * Get stringItem
-   * @return stringItem
-   **/
-  @NotNull
-  @ApiModelProperty(example = "what", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_STRING_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public String getStringItem() {
-    return stringItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_STRING_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setStringItem(String stringItem) {
-    this.stringItem = stringItem;
-  }
-
-  public TypeHolderExample numberItem(BigDecimal numberItem) {
-    this.numberItem = numberItem;
-    return this;
-  }
-
-  /**
-   * Get numberItem
-   * @return numberItem
-   **/
-  @NotNull
-  @ApiModelProperty(example = "1.234", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public BigDecimal getNumberItem() {
-    return numberItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setNumberItem(BigDecimal numberItem) {
-    this.numberItem = numberItem;
-  }
-
-  public TypeHolderExample floatItem(Float floatItem) {
-    this.floatItem = floatItem;
-    return this;
-  }
-
-  /**
-   * Get floatItem
-   * @return floatItem
-   **/
-  @NotNull
-  @ApiModelProperty(example = "1.234", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_FLOAT_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Float getFloatItem() {
-    return floatItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_FLOAT_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setFloatItem(Float floatItem) {
-    this.floatItem = floatItem;
-  }
-
-  public TypeHolderExample integerItem(Integer integerItem) {
-    this.integerItem = integerItem;
-    return this;
-  }
-
-  /**
-   * Get integerItem
-   * @return integerItem
-   **/
-  @NotNull
-  @ApiModelProperty(example = "-2", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Integer getIntegerItem() {
-    return integerItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setIntegerItem(Integer integerItem) {
-    this.integerItem = integerItem;
-  }
-
-  public TypeHolderExample boolItem(Boolean boolItem) {
-    this.boolItem = boolItem;
-    return this;
-  }
-
-  /**
-   * Get boolItem
-   * @return boolItem
-   **/
-  @NotNull
-  @ApiModelProperty(example = "true", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public Boolean getBoolItem() {
-    return boolItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setBoolItem(Boolean boolItem) {
-    this.boolItem = boolItem;
-  }
-
-  public TypeHolderExample arrayItem(List<Integer> arrayItem) {
-    this.arrayItem = arrayItem;
-    return this;
-  }
-
-  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
-    this.arrayItem.add(arrayItemItem);
-    return this;
-  }
-
-  /**
-   * Get arrayItem
-   * @return arrayItem
-   **/
-  @NotNull
-  @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public List<Integer> getArrayItem() {
-    return arrayItem;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
-  @JsonInclude(value = JsonInclude.Include.ALWAYS)
-  public void setArrayItem(List<Integer> arrayItem) {
-    this.arrayItem = arrayItem;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public TypeHolderExample() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public TypeHolderExample stringItem(String stringItem) {
+        this.stringItem = stringItem;
+        return this;
     }
-    TypeHolderExample typeHolderExample = (TypeHolderExample) o;
-    return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
-        Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
-        Objects.equals(this.floatItem, typeHolderExample.floatItem) &&
-        Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
-        Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
-        Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(stringItem, numberItem, floatItem, integerItem, boolItem, arrayItem);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class TypeHolderExample {\n");
-    sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
-    sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
-    sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
-    sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
-    sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
-    sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get stringItem
+     * @return stringItem
+     **/
+    @NotNull
+    @ApiModelProperty(example = "what", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_STRING_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getStringItem() {
+        return stringItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STRING_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setStringItem(String stringItem) {
+        this.stringItem = stringItem;
+    }
+
+    public TypeHolderExample numberItem(BigDecimal numberItem) {
+        this.numberItem = numberItem;
+        return this;
+    }
+
+    /**
+     * Get numberItem
+     * @return numberItem
+     **/
+    @NotNull
+    @ApiModelProperty(example = "1.234", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public BigDecimal getNumberItem() {
+        return numberItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NUMBER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setNumberItem(BigDecimal numberItem) {
+        this.numberItem = numberItem;
+    }
+
+    public TypeHolderExample floatItem(Float floatItem) {
+        this.floatItem = floatItem;
+        return this;
+    }
+
+    /**
+     * Get floatItem
+     * @return floatItem
+     **/
+    @NotNull
+    @ApiModelProperty(example = "1.234", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_FLOAT_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Float getFloatItem() {
+        return floatItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_FLOAT_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setFloatItem(Float floatItem) {
+        this.floatItem = floatItem;
+    }
+
+    public TypeHolderExample integerItem(Integer integerItem) {
+        this.integerItem = integerItem;
+        return this;
+    }
+
+    /**
+     * Get integerItem
+     * @return integerItem
+     **/
+    @NotNull
+    @ApiModelProperty(example = "-2", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Integer getIntegerItem() {
+        return integerItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_INTEGER_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setIntegerItem(Integer integerItem) {
+        this.integerItem = integerItem;
+    }
+
+    public TypeHolderExample boolItem(Boolean boolItem) {
+        this.boolItem = boolItem;
+        return this;
+    }
+
+    /**
+     * Get boolItem
+     * @return boolItem
+     **/
+    @NotNull
+    @ApiModelProperty(example = "true", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public Boolean getBoolItem() {
+        return boolItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_BOOL_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setBoolItem(Boolean boolItem) {
+        this.boolItem = boolItem;
+    }
+
+    public TypeHolderExample arrayItem(List<Integer> arrayItem) {
+        this.arrayItem = arrayItem;
+        return this;
+    }
+
+    public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+        this.arrayItem.add(arrayItemItem);
+        return this;
+    }
+
+    /**
+     * Get arrayItem
+     * @return arrayItem
+     **/
+    @NotNull
+    @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public List<Integer> getArrayItem() {
+        return arrayItem;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ARRAY_ITEM)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setArrayItem(List<Integer> arrayItem) {
+        this.arrayItem = arrayItem;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        TypeHolderExample typeHolderExample = (TypeHolderExample) o;
+        return Objects.equals(this.stringItem, typeHolderExample.stringItem) &&
+            Objects.equals(this.numberItem, typeHolderExample.numberItem) &&
+            Objects.equals(this.floatItem, typeHolderExample.floatItem) &&
+            Objects.equals(this.integerItem, typeHolderExample.integerItem) &&
+            Objects.equals(this.boolItem, typeHolderExample.boolItem) &&
+            Objects.equals(this.arrayItem, typeHolderExample.arrayItem);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(stringItem, numberItem, floatItem, integerItem, boolItem, arrayItem);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class TypeHolderExample {\n");
+        sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
+        sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
+        sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
+        sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
+        sb.append("    boolItem: ").append(toIndentedString(boolItem)).append("\n");
+        sb.append("    arrayItem: ").append(toIndentedString(arrayItem)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/User.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/User.java
index caea2374d87..fedc16d2919 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/User.java
@@ -40,263 +40,265 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class User {
-  public static final String JSON_PROPERTY_ID = "id";
-  private Long id;
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
 
-  public static final String JSON_PROPERTY_USERNAME = "username";
-  private String username;
+    public static final String JSON_PROPERTY_USERNAME = "username";
+    private String username;
 
-  public static final String JSON_PROPERTY_FIRST_NAME = "firstName";
-  private String firstName;
+    public static final String JSON_PROPERTY_FIRST_NAME = "firstName";
+    private String firstName;
 
-  public static final String JSON_PROPERTY_LAST_NAME = "lastName";
-  private String lastName;
+    public static final String JSON_PROPERTY_LAST_NAME = "lastName";
+    private String lastName;
 
-  public static final String JSON_PROPERTY_EMAIL = "email";
-  private String email;
+    public static final String JSON_PROPERTY_EMAIL = "email";
+    private String email;
 
-  public static final String JSON_PROPERTY_PASSWORD = "password";
-  private String password;
+    public static final String JSON_PROPERTY_PASSWORD = "password";
+    private String password;
 
-  public static final String JSON_PROPERTY_PHONE = "phone";
-  private String phone;
+    public static final String JSON_PROPERTY_PHONE = "phone";
+    private String phone;
 
-  public static final String JSON_PROPERTY_USER_STATUS = "userStatus";
-  private Integer userStatus;
+    public static final String JSON_PROPERTY_USER_STATUS = "userStatus";
+    private Integer userStatus;
 
-  public User id(Long id) {
-    this.id = id;
-    return this;
-  }
-
-  /**
-   * Get id
-   * @return id
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Long getId() {
-    return id;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setId(Long id) {
-    this.id = id;
-  }
-
-  public User username(String username) {
-    this.username = username;
-    return this;
-  }
-
-  /**
-   * Get username
-   * @return username
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_USERNAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getUsername() {
-    return username;
-  }
-
-  @JsonProperty(JSON_PROPERTY_USERNAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setUsername(String username) {
-    this.username = username;
-  }
-
-  public User firstName(String firstName) {
-    this.firstName = firstName;
-    return this;
-  }
-
-  /**
-   * Get firstName
-   * @return firstName
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_FIRST_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getFirstName() {
-    return firstName;
-  }
-
-  @JsonProperty(JSON_PROPERTY_FIRST_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFirstName(String firstName) {
-    this.firstName = firstName;
-  }
-
-  public User lastName(String lastName) {
-    this.lastName = lastName;
-    return this;
-  }
-
-  /**
-   * Get lastName
-   * @return lastName
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_LAST_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getLastName() {
-    return lastName;
-  }
-
-  @JsonProperty(JSON_PROPERTY_LAST_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setLastName(String lastName) {
-    this.lastName = lastName;
-  }
-
-  public User email(String email) {
-    this.email = email;
-    return this;
-  }
-
-  /**
-   * Get email
-   * @return email
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_EMAIL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getEmail() {
-    return email;
-  }
-
-  @JsonProperty(JSON_PROPERTY_EMAIL)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setEmail(String email) {
-    this.email = email;
-  }
-
-  public User password(String password) {
-    this.password = password;
-    return this;
-  }
-
-  /**
-   * Get password
-   * @return password
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PASSWORD)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getPassword() {
-    return password;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PASSWORD)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPassword(String password) {
-    this.password = password;
-  }
-
-  public User phone(String phone) {
-    this.phone = phone;
-    return this;
-  }
-
-  /**
-   * Get phone
-   * @return phone
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PHONE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getPhone() {
-    return phone;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PHONE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPhone(String phone) {
-    this.phone = phone;
-  }
-
-  public User userStatus(Integer userStatus) {
-    this.userStatus = userStatus;
-    return this;
-  }
-
-  /**
-   * User Status
-   * @return userStatus
-   **/
-  @Nullable
-  @ApiModelProperty(value = "User Status")
-  @JsonProperty(JSON_PROPERTY_USER_STATUS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getUserStatus() {
-    return userStatus;
-  }
-
-  @JsonProperty(JSON_PROPERTY_USER_STATUS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setUserStatus(Integer userStatus) {
-    this.userStatus = userStatus;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    public User() {
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+    public User id(Long id) {
+        this.id = id;
+        return this;
     }
-    User user = (User) o;
-    return Objects.equals(this.id, user.id) &&
-        Objects.equals(this.username, user.username) &&
-        Objects.equals(this.firstName, user.firstName) &&
-        Objects.equals(this.lastName, user.lastName) &&
-        Objects.equals(this.email, user.email) &&
-        Objects.equals(this.password, user.password) &&
-        Objects.equals(this.phone, user.phone) &&
-        Objects.equals(this.userStatus, user.userStatus);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class User {\n");
-    sb.append("    id: ").append(toIndentedString(id)).append("\n");
-    sb.append("    username: ").append(toIndentedString(username)).append("\n");
-    sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
-    sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
-    sb.append("    email: ").append(toIndentedString(email)).append("\n");
-    sb.append("    password: ").append(toIndentedString(password)).append("\n");
-    sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
-    sb.append("    userStatus: ").append(toIndentedString(userStatus)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public User username(String username) {
+        this.username = username;
+        return this;
+    }
+
+    /**
+     * Get username
+     * @return username
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_USERNAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getUsername() {
+        return username;
+    }
+
+    @JsonProperty(JSON_PROPERTY_USERNAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public User firstName(String firstName) {
+        this.firstName = firstName;
+        return this;
+    }
+
+    /**
+     * Get firstName
+     * @return firstName
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_FIRST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getFirstName() {
+        return firstName;
+    }
+
+    @JsonProperty(JSON_PROPERTY_FIRST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public User lastName(String lastName) {
+        this.lastName = lastName;
+        return this;
+    }
+
+    /**
+     * Get lastName
+     * @return lastName
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_LAST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getLastName() {
+        return lastName;
+    }
+
+    @JsonProperty(JSON_PROPERTY_LAST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public User email(String email) {
+        this.email = email;
+        return this;
+    }
+
+    /**
+     * Get email
+     * @return email
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_EMAIL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getEmail() {
+        return email;
+    }
+
+    @JsonProperty(JSON_PROPERTY_EMAIL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public User password(String password) {
+        this.password = password;
+        return this;
+    }
+
+    /**
+     * Get password
+     * @return password
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PASSWORD)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPassword() {
+        return password;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PASSWORD)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public User phone(String phone) {
+        this.phone = phone;
+        return this;
+    }
+
+    /**
+     * Get phone
+     * @return phone
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PHONE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPhone() {
+        return phone;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PHONE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public User userStatus(Integer userStatus) {
+        this.userStatus = userStatus;
+        return this;
+    }
+
+    /**
+     * User Status
+     * @return userStatus
+     **/
+    @Nullable
+    @ApiModelProperty(value = "User Status")
+    @JsonProperty(JSON_PROPERTY_USER_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getUserStatus() {
+        return userStatus;
+    }
+
+    @JsonProperty(JSON_PROPERTY_USER_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setUserStatus(Integer userStatus) {
+        this.userStatus = userStatus;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        User user = (User) o;
+        return Objects.equals(this.id, user.id) &&
+            Objects.equals(this.username, user.username) &&
+            Objects.equals(this.firstName, user.firstName) &&
+            Objects.equals(this.lastName, user.lastName) &&
+            Objects.equals(this.email, user.email) &&
+            Objects.equals(this.password, user.password) &&
+            Objects.equals(this.phone, user.phone) &&
+            Objects.equals(this.userStatus, user.userStatus);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class User {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    username: ").append(toIndentedString(username)).append("\n");
+        sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
+        sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
+        sb.append("    email: ").append(toIndentedString(email)).append("\n");
+        sb.append("    password: ").append(toIndentedString(password)).append("\n");
+        sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
+        sb.append("    userStatus: ").append(toIndentedString(userStatus)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/XmlItem.java b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/XmlItem.java
index 5ef91590040..351e04063b0 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/client/petstore/java-micronaut-client/src/main/java/org/openapitools/model/XmlItem.java
@@ -64,923 +64,925 @@ import javax.annotation.Generated;
 @Generated(value="org.openapitools.codegen.languages.JavaMicronautClientCodegen")
 @Introspected
 public class XmlItem {
-  public static final String JSON_PROPERTY_ATTRIBUTE_STRING = "attribute_string";
-  private String attributeString;
+    public static final String JSON_PROPERTY_ATTRIBUTE_STRING = "attribute_string";
+    private String attributeString;
 
-  public static final String JSON_PROPERTY_ATTRIBUTE_NUMBER = "attribute_number";
-  private BigDecimal attributeNumber;
+    public static final String JSON_PROPERTY_ATTRIBUTE_NUMBER = "attribute_number";
+    private BigDecimal attributeNumber;
 
-  public static final String JSON_PROPERTY_ATTRIBUTE_INTEGER = "attribute_integer";
-  private Integer attributeInteger;
+    public static final String JSON_PROPERTY_ATTRIBUTE_INTEGER = "attribute_integer";
+    private Integer attributeInteger;
 
-  public static final String JSON_PROPERTY_ATTRIBUTE_BOOLEAN = "attribute_boolean";
-  private Boolean attributeBoolean;
+    public static final String JSON_PROPERTY_ATTRIBUTE_BOOLEAN = "attribute_boolean";
+    private Boolean attributeBoolean;
 
-  public static final String JSON_PROPERTY_WRAPPED_ARRAY = "wrapped_array";
-  private List<Integer> wrappedArray = null;
+    public static final String JSON_PROPERTY_WRAPPED_ARRAY = "wrapped_array";
+    private List<Integer> wrappedArray = null;
 
-  public static final String JSON_PROPERTY_NAME_STRING = "name_string";
-  private String nameString;
+    public static final String JSON_PROPERTY_NAME_STRING = "name_string";
+    private String nameString;
 
-  public static final String JSON_PROPERTY_NAME_NUMBER = "name_number";
-  private BigDecimal nameNumber;
+    public static final String JSON_PROPERTY_NAME_NUMBER = "name_number";
+    private BigDecimal nameNumber;
 
-  public static final String JSON_PROPERTY_NAME_INTEGER = "name_integer";
-  private Integer nameInteger;
+    public static final String JSON_PROPERTY_NAME_INTEGER = "name_integer";
+    private Integer nameInteger;
 
-  public static final String JSON_PROPERTY_NAME_BOOLEAN = "name_boolean";
-  private Boolean nameBoolean;
+    public static final String JSON_PROPERTY_NAME_BOOLEAN = "name_boolean";
+    private Boolean nameBoolean;
 
-  public static final String JSON_PROPERTY_NAME_ARRAY = "name_array";
-  private List<Integer> nameArray = null;
+    public static final String JSON_PROPERTY_NAME_ARRAY = "name_array";
+    private List<Integer> nameArray = null;
 
-  public static final String JSON_PROPERTY_NAME_WRAPPED_ARRAY = "name_wrapped_array";
-  private List<Integer> nameWrappedArray = null;
+    public static final String JSON_PROPERTY_NAME_WRAPPED_ARRAY = "name_wrapped_array";
+    private List<Integer> nameWrappedArray = null;
 
-  public static final String JSON_PROPERTY_PREFIX_STRING = "prefix_string";
-  private String prefixString;
+    public static final String JSON_PROPERTY_PREFIX_STRING = "prefix_string";
+    private String prefixString;
 
-  public static final String JSON_PROPERTY_PREFIX_NUMBER = "prefix_number";
-  private BigDecimal prefixNumber;
+    public static final String JSON_PROPERTY_PREFIX_NUMBER = "prefix_number";
+    private BigDecimal prefixNumber;
 
-  public static final String JSON_PROPERTY_PREFIX_INTEGER = "prefix_integer";
-  private Integer prefixInteger;
+    public static final String JSON_PROPERTY_PREFIX_INTEGER = "prefix_integer";
+    private Integer prefixInteger;
 
-  public static final String JSON_PROPERTY_PREFIX_BOOLEAN = "prefix_boolean";
-  private Boolean prefixBoolean;
+    public static final String JSON_PROPERTY_PREFIX_BOOLEAN = "prefix_boolean";
+    private Boolean prefixBoolean;
 
-  public static final String JSON_PROPERTY_PREFIX_ARRAY = "prefix_array";
-  private List<Integer> prefixArray = null;
+    public static final String JSON_PROPERTY_PREFIX_ARRAY = "prefix_array";
+    private List<Integer> prefixArray = null;
 
-  public static final String JSON_PROPERTY_PREFIX_WRAPPED_ARRAY = "prefix_wrapped_array";
-  private List<Integer> prefixWrappedArray = null;
+    public static final String JSON_PROPERTY_PREFIX_WRAPPED_ARRAY = "prefix_wrapped_array";
+    private List<Integer> prefixWrappedArray = null;
 
-  public static final String JSON_PROPERTY_NAMESPACE_STRING = "namespace_string";
-  private String namespaceString;
+    public static final String JSON_PROPERTY_NAMESPACE_STRING = "namespace_string";
+    private String namespaceString;
 
-  public static final String JSON_PROPERTY_NAMESPACE_NUMBER = "namespace_number";
-  private BigDecimal namespaceNumber;
+    public static final String JSON_PROPERTY_NAMESPACE_NUMBER = "namespace_number";
+    private BigDecimal namespaceNumber;
 
-  public static final String JSON_PROPERTY_NAMESPACE_INTEGER = "namespace_integer";
-  private Integer namespaceInteger;
+    public static final String JSON_PROPERTY_NAMESPACE_INTEGER = "namespace_integer";
+    private Integer namespaceInteger;
 
-  public static final String JSON_PROPERTY_NAMESPACE_BOOLEAN = "namespace_boolean";
-  private Boolean namespaceBoolean;
+    public static final String JSON_PROPERTY_NAMESPACE_BOOLEAN = "namespace_boolean";
+    private Boolean namespaceBoolean;
 
-  public static final String JSON_PROPERTY_NAMESPACE_ARRAY = "namespace_array";
-  private List<Integer> namespaceArray = null;
+    public static final String JSON_PROPERTY_NAMESPACE_ARRAY = "namespace_array";
+    private List<Integer> namespaceArray = null;
 
-  public static final String JSON_PROPERTY_NAMESPACE_WRAPPED_ARRAY = "namespace_wrapped_array";
-  private List<Integer> namespaceWrappedArray = null;
+    public static final String JSON_PROPERTY_NAMESPACE_WRAPPED_ARRAY = "namespace_wrapped_array";
+    private List<Integer> namespaceWrappedArray = null;
 
-  public static final String JSON_PROPERTY_PREFIX_NS_STRING = "prefix_ns_string";
-  private String prefixNsString;
+    public static final String JSON_PROPERTY_PREFIX_NS_STRING = "prefix_ns_string";
+    private String prefixNsString;
 
-  public static final String JSON_PROPERTY_PREFIX_NS_NUMBER = "prefix_ns_number";
-  private BigDecimal prefixNsNumber;
+    public static final String JSON_PROPERTY_PREFIX_NS_NUMBER = "prefix_ns_number";
+    private BigDecimal prefixNsNumber;
 
-  public static final String JSON_PROPERTY_PREFIX_NS_INTEGER = "prefix_ns_integer";
-  private Integer prefixNsInteger;
+    public static final String JSON_PROPERTY_PREFIX_NS_INTEGER = "prefix_ns_integer";
+    private Integer prefixNsInteger;
 
-  public static final String JSON_PROPERTY_PREFIX_NS_BOOLEAN = "prefix_ns_boolean";
-  private Boolean prefixNsBoolean;
+    public static final String JSON_PROPERTY_PREFIX_NS_BOOLEAN = "prefix_ns_boolean";
+    private Boolean prefixNsBoolean;
 
-  public static final String JSON_PROPERTY_PREFIX_NS_ARRAY = "prefix_ns_array";
-  private List<Integer> prefixNsArray = null;
+    public static final String JSON_PROPERTY_PREFIX_NS_ARRAY = "prefix_ns_array";
+    private List<Integer> prefixNsArray = null;
 
-  public static final String JSON_PROPERTY_PREFIX_NS_WRAPPED_ARRAY = "prefix_ns_wrapped_array";
-  private List<Integer> prefixNsWrappedArray = null;
+    public static final String JSON_PROPERTY_PREFIX_NS_WRAPPED_ARRAY = "prefix_ns_wrapped_array";
+    private List<Integer> prefixNsWrappedArray = null;
 
-  public XmlItem attributeString(String attributeString) {
-    this.attributeString = attributeString;
-    return this;
-  }
-
-  /**
-   * Get attributeString
-   * @return attributeString
-   **/
-  @Nullable
-  @ApiModelProperty(example = "string", value = "")
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getAttributeString() {
-    return attributeString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAttributeString(String attributeString) {
-    this.attributeString = attributeString;
-  }
-
-  public XmlItem attributeNumber(BigDecimal attributeNumber) {
-    this.attributeNumber = attributeNumber;
-    return this;
-  }
-
-  /**
-   * Get attributeNumber
-   * @return attributeNumber
-   **/
-  @Nullable
-  @ApiModelProperty(example = "1.234", value = "")
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getAttributeNumber() {
-    return attributeNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAttributeNumber(BigDecimal attributeNumber) {
-    this.attributeNumber = attributeNumber;
-  }
-
-  public XmlItem attributeInteger(Integer attributeInteger) {
-    this.attributeInteger = attributeInteger;
-    return this;
-  }
-
-  /**
-   * Get attributeInteger
-   * @return attributeInteger
-   **/
-  @Nullable
-  @ApiModelProperty(example = "-2", value = "")
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getAttributeInteger() {
-    return attributeInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAttributeInteger(Integer attributeInteger) {
-    this.attributeInteger = attributeInteger;
-  }
-
-  public XmlItem attributeBoolean(Boolean attributeBoolean) {
-    this.attributeBoolean = attributeBoolean;
-    return this;
-  }
-
-  /**
-   * Get attributeBoolean
-   * @return attributeBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(example = "true", value = "")
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getAttributeBoolean() {
-    return attributeBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_ATTRIBUTE_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setAttributeBoolean(Boolean attributeBoolean) {
-    this.attributeBoolean = attributeBoolean;
-  }
-
-  public XmlItem wrappedArray(List<Integer> wrappedArray) {
-    this.wrappedArray = wrappedArray;
-    return this;
-  }
-
-  public XmlItem addWrappedArrayItem(Integer wrappedArrayItem) {
-    if (this.wrappedArray == null) {
-      this.wrappedArray = new ArrayList<Integer>();
+    public XmlItem() {
     }
-    this.wrappedArray.add(wrappedArrayItem);
-    return this;
-  }
-
-  /**
-   * Get wrappedArray
-   * @return wrappedArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getWrappedArray() {
-    return wrappedArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setWrappedArray(List<Integer> wrappedArray) {
-    this.wrappedArray = wrappedArray;
-  }
-
-  public XmlItem nameString(String nameString) {
-    this.nameString = nameString;
-    return this;
-  }
-
-  /**
-   * Get nameString
-   * @return nameString
-   **/
-  @Nullable
-  @ApiModelProperty(example = "string", value = "")
-  @JsonProperty(JSON_PROPERTY_NAME_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getNameString() {
-    return nameString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNameString(String nameString) {
-    this.nameString = nameString;
-  }
-
-  public XmlItem nameNumber(BigDecimal nameNumber) {
-    this.nameNumber = nameNumber;
-    return this;
-  }
-
-  /**
-   * Get nameNumber
-   * @return nameNumber
-   **/
-  @Nullable
-  @ApiModelProperty(example = "1.234", value = "")
-  @JsonProperty(JSON_PROPERTY_NAME_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getNameNumber() {
-    return nameNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNameNumber(BigDecimal nameNumber) {
-    this.nameNumber = nameNumber;
-  }
-
-  public XmlItem nameInteger(Integer nameInteger) {
-    this.nameInteger = nameInteger;
-    return this;
-  }
-
-  /**
-   * Get nameInteger
-   * @return nameInteger
-   **/
-  @Nullable
-  @ApiModelProperty(example = "-2", value = "")
-  @JsonProperty(JSON_PROPERTY_NAME_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getNameInteger() {
-    return nameInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNameInteger(Integer nameInteger) {
-    this.nameInteger = nameInteger;
-  }
-
-  public XmlItem nameBoolean(Boolean nameBoolean) {
-    this.nameBoolean = nameBoolean;
-    return this;
-  }
-
-  /**
-   * Get nameBoolean
-   * @return nameBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(example = "true", value = "")
-  @JsonProperty(JSON_PROPERTY_NAME_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getNameBoolean() {
-    return nameBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNameBoolean(Boolean nameBoolean) {
-    this.nameBoolean = nameBoolean;
-  }
-
-  public XmlItem nameArray(List<Integer> nameArray) {
-    this.nameArray = nameArray;
-    return this;
-  }
-
-  public XmlItem addNameArrayItem(Integer nameArrayItem) {
-    if (this.nameArray == null) {
-      this.nameArray = new ArrayList<Integer>();
+    public XmlItem attributeString(String attributeString) {
+        this.attributeString = attributeString;
+        return this;
     }
-    this.nameArray.add(nameArrayItem);
-    return this;
-  }
 
-  /**
-   * Get nameArray
-   * @return nameArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getNameArray() {
-    return nameArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNameArray(List<Integer> nameArray) {
-    this.nameArray = nameArray;
-  }
-
-  public XmlItem nameWrappedArray(List<Integer> nameWrappedArray) {
-    this.nameWrappedArray = nameWrappedArray;
-    return this;
-  }
-
-  public XmlItem addNameWrappedArrayItem(Integer nameWrappedArrayItem) {
-    if (this.nameWrappedArray == null) {
-      this.nameWrappedArray = new ArrayList<Integer>();
+    /**
+     * Get attributeString
+     * @return attributeString
+     **/
+    @Nullable
+    @ApiModelProperty(example = "string", value = "")
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getAttributeString() {
+        return attributeString;
     }
-    this.nameWrappedArray.add(nameWrappedArrayItem);
-    return this;
-  }
 
-  /**
-   * Get nameWrappedArray
-   * @return nameWrappedArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAME_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getNameWrappedArray() {
-    return nameWrappedArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAME_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNameWrappedArray(List<Integer> nameWrappedArray) {
-    this.nameWrappedArray = nameWrappedArray;
-  }
-
-  public XmlItem prefixString(String prefixString) {
-    this.prefixString = prefixString;
-    return this;
-  }
-
-  /**
-   * Get prefixString
-   * @return prefixString
-   **/
-  @Nullable
-  @ApiModelProperty(example = "string", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getPrefixString() {
-    return prefixString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixString(String prefixString) {
-    this.prefixString = prefixString;
-  }
-
-  public XmlItem prefixNumber(BigDecimal prefixNumber) {
-    this.prefixNumber = prefixNumber;
-    return this;
-  }
-
-  /**
-   * Get prefixNumber
-   * @return prefixNumber
-   **/
-  @Nullable
-  @ApiModelProperty(example = "1.234", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getPrefixNumber() {
-    return prefixNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNumber(BigDecimal prefixNumber) {
-    this.prefixNumber = prefixNumber;
-  }
-
-  public XmlItem prefixInteger(Integer prefixInteger) {
-    this.prefixInteger = prefixInteger;
-    return this;
-  }
-
-  /**
-   * Get prefixInteger
-   * @return prefixInteger
-   **/
-  @Nullable
-  @ApiModelProperty(example = "-2", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getPrefixInteger() {
-    return prefixInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixInteger(Integer prefixInteger) {
-    this.prefixInteger = prefixInteger;
-  }
-
-  public XmlItem prefixBoolean(Boolean prefixBoolean) {
-    this.prefixBoolean = prefixBoolean;
-    return this;
-  }
-
-  /**
-   * Get prefixBoolean
-   * @return prefixBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(example = "true", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getPrefixBoolean() {
-    return prefixBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixBoolean(Boolean prefixBoolean) {
-    this.prefixBoolean = prefixBoolean;
-  }
-
-  public XmlItem prefixArray(List<Integer> prefixArray) {
-    this.prefixArray = prefixArray;
-    return this;
-  }
-
-  public XmlItem addPrefixArrayItem(Integer prefixArrayItem) {
-    if (this.prefixArray == null) {
-      this.prefixArray = new ArrayList<Integer>();
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAttributeString(String attributeString) {
+        this.attributeString = attributeString;
     }
-    this.prefixArray.add(prefixArrayItem);
-    return this;
-  }
 
-  /**
-   * Get prefixArray
-   * @return prefixArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getPrefixArray() {
-    return prefixArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixArray(List<Integer> prefixArray) {
-    this.prefixArray = prefixArray;
-  }
-
-  public XmlItem prefixWrappedArray(List<Integer> prefixWrappedArray) {
-    this.prefixWrappedArray = prefixWrappedArray;
-    return this;
-  }
-
-  public XmlItem addPrefixWrappedArrayItem(Integer prefixWrappedArrayItem) {
-    if (this.prefixWrappedArray == null) {
-      this.prefixWrappedArray = new ArrayList<Integer>();
+    public XmlItem attributeNumber(BigDecimal attributeNumber) {
+        this.attributeNumber = attributeNumber;
+        return this;
     }
-    this.prefixWrappedArray.add(prefixWrappedArrayItem);
-    return this;
-  }
 
-  /**
-   * Get prefixWrappedArray
-   * @return prefixWrappedArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getPrefixWrappedArray() {
-    return prefixWrappedArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixWrappedArray(List<Integer> prefixWrappedArray) {
-    this.prefixWrappedArray = prefixWrappedArray;
-  }
-
-  public XmlItem namespaceString(String namespaceString) {
-    this.namespaceString = namespaceString;
-    return this;
-  }
-
-  /**
-   * Get namespaceString
-   * @return namespaceString
-   **/
-  @Nullable
-  @ApiModelProperty(example = "string", value = "")
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getNamespaceString() {
-    return namespaceString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNamespaceString(String namespaceString) {
-    this.namespaceString = namespaceString;
-  }
-
-  public XmlItem namespaceNumber(BigDecimal namespaceNumber) {
-    this.namespaceNumber = namespaceNumber;
-    return this;
-  }
-
-  /**
-   * Get namespaceNumber
-   * @return namespaceNumber
-   **/
-  @Nullable
-  @ApiModelProperty(example = "1.234", value = "")
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getNamespaceNumber() {
-    return namespaceNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNamespaceNumber(BigDecimal namespaceNumber) {
-    this.namespaceNumber = namespaceNumber;
-  }
-
-  public XmlItem namespaceInteger(Integer namespaceInteger) {
-    this.namespaceInteger = namespaceInteger;
-    return this;
-  }
-
-  /**
-   * Get namespaceInteger
-   * @return namespaceInteger
-   **/
-  @Nullable
-  @ApiModelProperty(example = "-2", value = "")
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getNamespaceInteger() {
-    return namespaceInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNamespaceInteger(Integer namespaceInteger) {
-    this.namespaceInteger = namespaceInteger;
-  }
-
-  public XmlItem namespaceBoolean(Boolean namespaceBoolean) {
-    this.namespaceBoolean = namespaceBoolean;
-    return this;
-  }
-
-  /**
-   * Get namespaceBoolean
-   * @return namespaceBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(example = "true", value = "")
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getNamespaceBoolean() {
-    return namespaceBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNamespaceBoolean(Boolean namespaceBoolean) {
-    this.namespaceBoolean = namespaceBoolean;
-  }
-
-  public XmlItem namespaceArray(List<Integer> namespaceArray) {
-    this.namespaceArray = namespaceArray;
-    return this;
-  }
-
-  public XmlItem addNamespaceArrayItem(Integer namespaceArrayItem) {
-    if (this.namespaceArray == null) {
-      this.namespaceArray = new ArrayList<Integer>();
+    /**
+     * Get attributeNumber
+     * @return attributeNumber
+     **/
+    @Nullable
+    @ApiModelProperty(example = "1.234", value = "")
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getAttributeNumber() {
+        return attributeNumber;
     }
-    this.namespaceArray.add(namespaceArrayItem);
-    return this;
-  }
 
-  /**
-   * Get namespaceArray
-   * @return namespaceArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getNamespaceArray() {
-    return namespaceArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNamespaceArray(List<Integer> namespaceArray) {
-    this.namespaceArray = namespaceArray;
-  }
-
-  public XmlItem namespaceWrappedArray(List<Integer> namespaceWrappedArray) {
-    this.namespaceWrappedArray = namespaceWrappedArray;
-    return this;
-  }
-
-  public XmlItem addNamespaceWrappedArrayItem(Integer namespaceWrappedArrayItem) {
-    if (this.namespaceWrappedArray == null) {
-      this.namespaceWrappedArray = new ArrayList<Integer>();
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAttributeNumber(BigDecimal attributeNumber) {
+        this.attributeNumber = attributeNumber;
     }
-    this.namespaceWrappedArray.add(namespaceWrappedArrayItem);
-    return this;
-  }
 
-  /**
-   * Get namespaceWrappedArray
-   * @return namespaceWrappedArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getNamespaceWrappedArray() {
-    return namespaceWrappedArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_NAMESPACE_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setNamespaceWrappedArray(List<Integer> namespaceWrappedArray) {
-    this.namespaceWrappedArray = namespaceWrappedArray;
-  }
-
-  public XmlItem prefixNsString(String prefixNsString) {
-    this.prefixNsString = prefixNsString;
-    return this;
-  }
-
-  /**
-   * Get prefixNsString
-   * @return prefixNsString
-   **/
-  @Nullable
-  @ApiModelProperty(example = "string", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public String getPrefixNsString() {
-    return prefixNsString;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_STRING)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNsString(String prefixNsString) {
-    this.prefixNsString = prefixNsString;
-  }
-
-  public XmlItem prefixNsNumber(BigDecimal prefixNsNumber) {
-    this.prefixNsNumber = prefixNsNumber;
-    return this;
-  }
-
-  /**
-   * Get prefixNsNumber
-   * @return prefixNsNumber
-   **/
-  @Nullable
-  @ApiModelProperty(example = "1.234", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public BigDecimal getPrefixNsNumber() {
-    return prefixNsNumber;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNsNumber(BigDecimal prefixNsNumber) {
-    this.prefixNsNumber = prefixNsNumber;
-  }
-
-  public XmlItem prefixNsInteger(Integer prefixNsInteger) {
-    this.prefixNsInteger = prefixNsInteger;
-    return this;
-  }
-
-  /**
-   * Get prefixNsInteger
-   * @return prefixNsInteger
-   **/
-  @Nullable
-  @ApiModelProperty(example = "-2", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Integer getPrefixNsInteger() {
-    return prefixNsInteger;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_INTEGER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNsInteger(Integer prefixNsInteger) {
-    this.prefixNsInteger = prefixNsInteger;
-  }
-
-  public XmlItem prefixNsBoolean(Boolean prefixNsBoolean) {
-    this.prefixNsBoolean = prefixNsBoolean;
-    return this;
-  }
-
-  /**
-   * Get prefixNsBoolean
-   * @return prefixNsBoolean
-   **/
-  @Nullable
-  @ApiModelProperty(example = "true", value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public Boolean getPrefixNsBoolean() {
-    return prefixNsBoolean;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_BOOLEAN)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNsBoolean(Boolean prefixNsBoolean) {
-    this.prefixNsBoolean = prefixNsBoolean;
-  }
-
-  public XmlItem prefixNsArray(List<Integer> prefixNsArray) {
-    this.prefixNsArray = prefixNsArray;
-    return this;
-  }
-
-  public XmlItem addPrefixNsArrayItem(Integer prefixNsArrayItem) {
-    if (this.prefixNsArray == null) {
-      this.prefixNsArray = new ArrayList<Integer>();
+    public XmlItem attributeInteger(Integer attributeInteger) {
+        this.attributeInteger = attributeInteger;
+        return this;
     }
-    this.prefixNsArray.add(prefixNsArrayItem);
-    return this;
-  }
 
-  /**
-   * Get prefixNsArray
-   * @return prefixNsArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getPrefixNsArray() {
-    return prefixNsArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNsArray(List<Integer> prefixNsArray) {
-    this.prefixNsArray = prefixNsArray;
-  }
-
-  public XmlItem prefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
-    this.prefixNsWrappedArray = prefixNsWrappedArray;
-    return this;
-  }
-
-  public XmlItem addPrefixNsWrappedArrayItem(Integer prefixNsWrappedArrayItem) {
-    if (this.prefixNsWrappedArray == null) {
-      this.prefixNsWrappedArray = new ArrayList<Integer>();
+    /**
+     * Get attributeInteger
+     * @return attributeInteger
+     **/
+    @Nullable
+    @ApiModelProperty(example = "-2", value = "")
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getAttributeInteger() {
+        return attributeInteger;
     }
-    this.prefixNsWrappedArray.add(prefixNsWrappedArrayItem);
-    return this;
-  }
 
-  /**
-   * Get prefixNsWrappedArray
-   * @return prefixNsWrappedArray
-   **/
-  @Nullable
-  @ApiModelProperty(value = "")
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public List<Integer> getPrefixNsWrappedArray() {
-    return prefixNsWrappedArray;
-  }
-
-  @JsonProperty(JSON_PROPERTY_PREFIX_NS_WRAPPED_ARRAY)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setPrefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
-    this.prefixNsWrappedArray = prefixNsWrappedArray;
-  }
-
-  @Override
-  public boolean equals(Object o) {
-    if (this == o) {
-      return true;
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAttributeInteger(Integer attributeInteger) {
+        this.attributeInteger = attributeInteger;
     }
-    if (o == null || getClass() != o.getClass()) {
-      return false;
+
+    public XmlItem attributeBoolean(Boolean attributeBoolean) {
+        this.attributeBoolean = attributeBoolean;
+        return this;
     }
-    XmlItem xmlItem = (XmlItem) o;
-    return Objects.equals(this.attributeString, xmlItem.attributeString) &&
-        Objects.equals(this.attributeNumber, xmlItem.attributeNumber) &&
-        Objects.equals(this.attributeInteger, xmlItem.attributeInteger) &&
-        Objects.equals(this.attributeBoolean, xmlItem.attributeBoolean) &&
-        Objects.equals(this.wrappedArray, xmlItem.wrappedArray) &&
-        Objects.equals(this.nameString, xmlItem.nameString) &&
-        Objects.equals(this.nameNumber, xmlItem.nameNumber) &&
-        Objects.equals(this.nameInteger, xmlItem.nameInteger) &&
-        Objects.equals(this.nameBoolean, xmlItem.nameBoolean) &&
-        Objects.equals(this.nameArray, xmlItem.nameArray) &&
-        Objects.equals(this.nameWrappedArray, xmlItem.nameWrappedArray) &&
-        Objects.equals(this.prefixString, xmlItem.prefixString) &&
-        Objects.equals(this.prefixNumber, xmlItem.prefixNumber) &&
-        Objects.equals(this.prefixInteger, xmlItem.prefixInteger) &&
-        Objects.equals(this.prefixBoolean, xmlItem.prefixBoolean) &&
-        Objects.equals(this.prefixArray, xmlItem.prefixArray) &&
-        Objects.equals(this.prefixWrappedArray, xmlItem.prefixWrappedArray) &&
-        Objects.equals(this.namespaceString, xmlItem.namespaceString) &&
-        Objects.equals(this.namespaceNumber, xmlItem.namespaceNumber) &&
-        Objects.equals(this.namespaceInteger, xmlItem.namespaceInteger) &&
-        Objects.equals(this.namespaceBoolean, xmlItem.namespaceBoolean) &&
-        Objects.equals(this.namespaceArray, xmlItem.namespaceArray) &&
-        Objects.equals(this.namespaceWrappedArray, xmlItem.namespaceWrappedArray) &&
-        Objects.equals(this.prefixNsString, xmlItem.prefixNsString) &&
-        Objects.equals(this.prefixNsNumber, xmlItem.prefixNsNumber) &&
-        Objects.equals(this.prefixNsInteger, xmlItem.prefixNsInteger) &&
-        Objects.equals(this.prefixNsBoolean, xmlItem.prefixNsBoolean) &&
-        Objects.equals(this.prefixNsArray, xmlItem.prefixNsArray) &&
-        Objects.equals(this.prefixNsWrappedArray, xmlItem.prefixNsWrappedArray);
-  }
 
-  @Override
-  public int hashCode() {
-    return Objects.hash(attributeString, attributeNumber, attributeInteger, attributeBoolean, wrappedArray, nameString, nameNumber, nameInteger, nameBoolean, nameArray, nameWrappedArray, prefixString, prefixNumber, prefixInteger, prefixBoolean, prefixArray, prefixWrappedArray, namespaceString, namespaceNumber, namespaceInteger, namespaceBoolean, namespaceArray, namespaceWrappedArray, prefixNsString, prefixNsNumber, prefixNsInteger, prefixNsBoolean, prefixNsArray, prefixNsWrappedArray);
-  }
-
-  @Override
-  public String toString() {
-    StringBuilder sb = new StringBuilder();
-    sb.append("class XmlItem {\n");
-    sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
-    sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
-    sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
-    sb.append("    attributeBoolean: ").append(toIndentedString(attributeBoolean)).append("\n");
-    sb.append("    wrappedArray: ").append(toIndentedString(wrappedArray)).append("\n");
-    sb.append("    nameString: ").append(toIndentedString(nameString)).append("\n");
-    sb.append("    nameNumber: ").append(toIndentedString(nameNumber)).append("\n");
-    sb.append("    nameInteger: ").append(toIndentedString(nameInteger)).append("\n");
-    sb.append("    nameBoolean: ").append(toIndentedString(nameBoolean)).append("\n");
-    sb.append("    nameArray: ").append(toIndentedString(nameArray)).append("\n");
-    sb.append("    nameWrappedArray: ").append(toIndentedString(nameWrappedArray)).append("\n");
-    sb.append("    prefixString: ").append(toIndentedString(prefixString)).append("\n");
-    sb.append("    prefixNumber: ").append(toIndentedString(prefixNumber)).append("\n");
-    sb.append("    prefixInteger: ").append(toIndentedString(prefixInteger)).append("\n");
-    sb.append("    prefixBoolean: ").append(toIndentedString(prefixBoolean)).append("\n");
-    sb.append("    prefixArray: ").append(toIndentedString(prefixArray)).append("\n");
-    sb.append("    prefixWrappedArray: ").append(toIndentedString(prefixWrappedArray)).append("\n");
-    sb.append("    namespaceString: ").append(toIndentedString(namespaceString)).append("\n");
-    sb.append("    namespaceNumber: ").append(toIndentedString(namespaceNumber)).append("\n");
-    sb.append("    namespaceInteger: ").append(toIndentedString(namespaceInteger)).append("\n");
-    sb.append("    namespaceBoolean: ").append(toIndentedString(namespaceBoolean)).append("\n");
-    sb.append("    namespaceArray: ").append(toIndentedString(namespaceArray)).append("\n");
-    sb.append("    namespaceWrappedArray: ").append(toIndentedString(namespaceWrappedArray)).append("\n");
-    sb.append("    prefixNsString: ").append(toIndentedString(prefixNsString)).append("\n");
-    sb.append("    prefixNsNumber: ").append(toIndentedString(prefixNsNumber)).append("\n");
-    sb.append("    prefixNsInteger: ").append(toIndentedString(prefixNsInteger)).append("\n");
-    sb.append("    prefixNsBoolean: ").append(toIndentedString(prefixNsBoolean)).append("\n");
-    sb.append("    prefixNsArray: ").append(toIndentedString(prefixNsArray)).append("\n");
-    sb.append("    prefixNsWrappedArray: ").append(toIndentedString(prefixNsWrappedArray)).append("\n");
-    sb.append("}");
-    return sb.toString();
-  }
-
-  /**
-   * Convert the given object to string with each line indented by 4 spaces
-   * (except the first line).
-   */
-  private String toIndentedString(Object o) {
-    if (o == null) {
-      return "null";
+    /**
+     * Get attributeBoolean
+     * @return attributeBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(example = "true", value = "")
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getAttributeBoolean() {
+        return attributeBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ATTRIBUTE_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setAttributeBoolean(Boolean attributeBoolean) {
+        this.attributeBoolean = attributeBoolean;
+    }
+
+    public XmlItem wrappedArray(List<Integer> wrappedArray) {
+        this.wrappedArray = wrappedArray;
+        return this;
+    }
+
+    public XmlItem addWrappedArrayItem(Integer wrappedArrayItem) {
+        if (this.wrappedArray == null) {
+            this.wrappedArray = new ArrayList<Integer>();
+        }
+        this.wrappedArray.add(wrappedArrayItem);
+        return this;
+    }
+
+    /**
+     * Get wrappedArray
+     * @return wrappedArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getWrappedArray() {
+        return wrappedArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setWrappedArray(List<Integer> wrappedArray) {
+        this.wrappedArray = wrappedArray;
+    }
+
+    public XmlItem nameString(String nameString) {
+        this.nameString = nameString;
+        return this;
+    }
+
+    /**
+     * Get nameString
+     * @return nameString
+     **/
+    @Nullable
+    @ApiModelProperty(example = "string", value = "")
+    @JsonProperty(JSON_PROPERTY_NAME_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getNameString() {
+        return nameString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNameString(String nameString) {
+        this.nameString = nameString;
+    }
+
+    public XmlItem nameNumber(BigDecimal nameNumber) {
+        this.nameNumber = nameNumber;
+        return this;
+    }
+
+    /**
+     * Get nameNumber
+     * @return nameNumber
+     **/
+    @Nullable
+    @ApiModelProperty(example = "1.234", value = "")
+    @JsonProperty(JSON_PROPERTY_NAME_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getNameNumber() {
+        return nameNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNameNumber(BigDecimal nameNumber) {
+        this.nameNumber = nameNumber;
+    }
+
+    public XmlItem nameInteger(Integer nameInteger) {
+        this.nameInteger = nameInteger;
+        return this;
+    }
+
+    /**
+     * Get nameInteger
+     * @return nameInteger
+     **/
+    @Nullable
+    @ApiModelProperty(example = "-2", value = "")
+    @JsonProperty(JSON_PROPERTY_NAME_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getNameInteger() {
+        return nameInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNameInteger(Integer nameInteger) {
+        this.nameInteger = nameInteger;
+    }
+
+    public XmlItem nameBoolean(Boolean nameBoolean) {
+        this.nameBoolean = nameBoolean;
+        return this;
+    }
+
+    /**
+     * Get nameBoolean
+     * @return nameBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(example = "true", value = "")
+    @JsonProperty(JSON_PROPERTY_NAME_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getNameBoolean() {
+        return nameBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNameBoolean(Boolean nameBoolean) {
+        this.nameBoolean = nameBoolean;
+    }
+
+    public XmlItem nameArray(List<Integer> nameArray) {
+        this.nameArray = nameArray;
+        return this;
+    }
+
+    public XmlItem addNameArrayItem(Integer nameArrayItem) {
+        if (this.nameArray == null) {
+            this.nameArray = new ArrayList<Integer>();
+        }
+        this.nameArray.add(nameArrayItem);
+        return this;
+    }
+
+    /**
+     * Get nameArray
+     * @return nameArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getNameArray() {
+        return nameArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNameArray(List<Integer> nameArray) {
+        this.nameArray = nameArray;
+    }
+
+    public XmlItem nameWrappedArray(List<Integer> nameWrappedArray) {
+        this.nameWrappedArray = nameWrappedArray;
+        return this;
+    }
+
+    public XmlItem addNameWrappedArrayItem(Integer nameWrappedArrayItem) {
+        if (this.nameWrappedArray == null) {
+            this.nameWrappedArray = new ArrayList<Integer>();
+        }
+        this.nameWrappedArray.add(nameWrappedArrayItem);
+        return this;
+    }
+
+    /**
+     * Get nameWrappedArray
+     * @return nameWrappedArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getNameWrappedArray() {
+        return nameWrappedArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNameWrappedArray(List<Integer> nameWrappedArray) {
+        this.nameWrappedArray = nameWrappedArray;
+    }
+
+    public XmlItem prefixString(String prefixString) {
+        this.prefixString = prefixString;
+        return this;
+    }
+
+    /**
+     * Get prefixString
+     * @return prefixString
+     **/
+    @Nullable
+    @ApiModelProperty(example = "string", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPrefixString() {
+        return prefixString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixString(String prefixString) {
+        this.prefixString = prefixString;
+    }
+
+    public XmlItem prefixNumber(BigDecimal prefixNumber) {
+        this.prefixNumber = prefixNumber;
+        return this;
+    }
+
+    /**
+     * Get prefixNumber
+     * @return prefixNumber
+     **/
+    @Nullable
+    @ApiModelProperty(example = "1.234", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getPrefixNumber() {
+        return prefixNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNumber(BigDecimal prefixNumber) {
+        this.prefixNumber = prefixNumber;
+    }
+
+    public XmlItem prefixInteger(Integer prefixInteger) {
+        this.prefixInteger = prefixInteger;
+        return this;
+    }
+
+    /**
+     * Get prefixInteger
+     * @return prefixInteger
+     **/
+    @Nullable
+    @ApiModelProperty(example = "-2", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getPrefixInteger() {
+        return prefixInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixInteger(Integer prefixInteger) {
+        this.prefixInteger = prefixInteger;
+    }
+
+    public XmlItem prefixBoolean(Boolean prefixBoolean) {
+        this.prefixBoolean = prefixBoolean;
+        return this;
+    }
+
+    /**
+     * Get prefixBoolean
+     * @return prefixBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(example = "true", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getPrefixBoolean() {
+        return prefixBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixBoolean(Boolean prefixBoolean) {
+        this.prefixBoolean = prefixBoolean;
+    }
+
+    public XmlItem prefixArray(List<Integer> prefixArray) {
+        this.prefixArray = prefixArray;
+        return this;
+    }
+
+    public XmlItem addPrefixArrayItem(Integer prefixArrayItem) {
+        if (this.prefixArray == null) {
+            this.prefixArray = new ArrayList<Integer>();
+        }
+        this.prefixArray.add(prefixArrayItem);
+        return this;
+    }
+
+    /**
+     * Get prefixArray
+     * @return prefixArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getPrefixArray() {
+        return prefixArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixArray(List<Integer> prefixArray) {
+        this.prefixArray = prefixArray;
+    }
+
+    public XmlItem prefixWrappedArray(List<Integer> prefixWrappedArray) {
+        this.prefixWrappedArray = prefixWrappedArray;
+        return this;
+    }
+
+    public XmlItem addPrefixWrappedArrayItem(Integer prefixWrappedArrayItem) {
+        if (this.prefixWrappedArray == null) {
+            this.prefixWrappedArray = new ArrayList<Integer>();
+        }
+        this.prefixWrappedArray.add(prefixWrappedArrayItem);
+        return this;
+    }
+
+    /**
+     * Get prefixWrappedArray
+     * @return prefixWrappedArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getPrefixWrappedArray() {
+        return prefixWrappedArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixWrappedArray(List<Integer> prefixWrappedArray) {
+        this.prefixWrappedArray = prefixWrappedArray;
+    }
+
+    public XmlItem namespaceString(String namespaceString) {
+        this.namespaceString = namespaceString;
+        return this;
+    }
+
+    /**
+     * Get namespaceString
+     * @return namespaceString
+     **/
+    @Nullable
+    @ApiModelProperty(example = "string", value = "")
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getNamespaceString() {
+        return namespaceString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNamespaceString(String namespaceString) {
+        this.namespaceString = namespaceString;
+    }
+
+    public XmlItem namespaceNumber(BigDecimal namespaceNumber) {
+        this.namespaceNumber = namespaceNumber;
+        return this;
+    }
+
+    /**
+     * Get namespaceNumber
+     * @return namespaceNumber
+     **/
+    @Nullable
+    @ApiModelProperty(example = "1.234", value = "")
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getNamespaceNumber() {
+        return namespaceNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNamespaceNumber(BigDecimal namespaceNumber) {
+        this.namespaceNumber = namespaceNumber;
+    }
+
+    public XmlItem namespaceInteger(Integer namespaceInteger) {
+        this.namespaceInteger = namespaceInteger;
+        return this;
+    }
+
+    /**
+     * Get namespaceInteger
+     * @return namespaceInteger
+     **/
+    @Nullable
+    @ApiModelProperty(example = "-2", value = "")
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getNamespaceInteger() {
+        return namespaceInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNamespaceInteger(Integer namespaceInteger) {
+        this.namespaceInteger = namespaceInteger;
+    }
+
+    public XmlItem namespaceBoolean(Boolean namespaceBoolean) {
+        this.namespaceBoolean = namespaceBoolean;
+        return this;
+    }
+
+    /**
+     * Get namespaceBoolean
+     * @return namespaceBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(example = "true", value = "")
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getNamespaceBoolean() {
+        return namespaceBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNamespaceBoolean(Boolean namespaceBoolean) {
+        this.namespaceBoolean = namespaceBoolean;
+    }
+
+    public XmlItem namespaceArray(List<Integer> namespaceArray) {
+        this.namespaceArray = namespaceArray;
+        return this;
+    }
+
+    public XmlItem addNamespaceArrayItem(Integer namespaceArrayItem) {
+        if (this.namespaceArray == null) {
+            this.namespaceArray = new ArrayList<Integer>();
+        }
+        this.namespaceArray.add(namespaceArrayItem);
+        return this;
+    }
+
+    /**
+     * Get namespaceArray
+     * @return namespaceArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getNamespaceArray() {
+        return namespaceArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNamespaceArray(List<Integer> namespaceArray) {
+        this.namespaceArray = namespaceArray;
+    }
+
+    public XmlItem namespaceWrappedArray(List<Integer> namespaceWrappedArray) {
+        this.namespaceWrappedArray = namespaceWrappedArray;
+        return this;
+    }
+
+    public XmlItem addNamespaceWrappedArrayItem(Integer namespaceWrappedArrayItem) {
+        if (this.namespaceWrappedArray == null) {
+            this.namespaceWrappedArray = new ArrayList<Integer>();
+        }
+        this.namespaceWrappedArray.add(namespaceWrappedArrayItem);
+        return this;
+    }
+
+    /**
+     * Get namespaceWrappedArray
+     * @return namespaceWrappedArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getNamespaceWrappedArray() {
+        return namespaceWrappedArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAMESPACE_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setNamespaceWrappedArray(List<Integer> namespaceWrappedArray) {
+        this.namespaceWrappedArray = namespaceWrappedArray;
+    }
+
+    public XmlItem prefixNsString(String prefixNsString) {
+        this.prefixNsString = prefixNsString;
+        return this;
+    }
+
+    /**
+     * Get prefixNsString
+     * @return prefixNsString
+     **/
+    @Nullable
+    @ApiModelProperty(example = "string", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPrefixNsString() {
+        return prefixNsString;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_STRING)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNsString(String prefixNsString) {
+        this.prefixNsString = prefixNsString;
+    }
+
+    public XmlItem prefixNsNumber(BigDecimal prefixNsNumber) {
+        this.prefixNsNumber = prefixNsNumber;
+        return this;
+    }
+
+    /**
+     * Get prefixNsNumber
+     * @return prefixNsNumber
+     **/
+    @Nullable
+    @ApiModelProperty(example = "1.234", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public BigDecimal getPrefixNsNumber() {
+        return prefixNsNumber;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_NUMBER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNsNumber(BigDecimal prefixNsNumber) {
+        this.prefixNsNumber = prefixNsNumber;
+    }
+
+    public XmlItem prefixNsInteger(Integer prefixNsInteger) {
+        this.prefixNsInteger = prefixNsInteger;
+        return this;
+    }
+
+    /**
+     * Get prefixNsInteger
+     * @return prefixNsInteger
+     **/
+    @Nullable
+    @ApiModelProperty(example = "-2", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getPrefixNsInteger() {
+        return prefixNsInteger;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_INTEGER)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNsInteger(Integer prefixNsInteger) {
+        this.prefixNsInteger = prefixNsInteger;
+    }
+
+    public XmlItem prefixNsBoolean(Boolean prefixNsBoolean) {
+        this.prefixNsBoolean = prefixNsBoolean;
+        return this;
+    }
+
+    /**
+     * Get prefixNsBoolean
+     * @return prefixNsBoolean
+     **/
+    @Nullable
+    @ApiModelProperty(example = "true", value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getPrefixNsBoolean() {
+        return prefixNsBoolean;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_BOOLEAN)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNsBoolean(Boolean prefixNsBoolean) {
+        this.prefixNsBoolean = prefixNsBoolean;
+    }
+
+    public XmlItem prefixNsArray(List<Integer> prefixNsArray) {
+        this.prefixNsArray = prefixNsArray;
+        return this;
+    }
+
+    public XmlItem addPrefixNsArrayItem(Integer prefixNsArrayItem) {
+        if (this.prefixNsArray == null) {
+            this.prefixNsArray = new ArrayList<Integer>();
+        }
+        this.prefixNsArray.add(prefixNsArrayItem);
+        return this;
+    }
+
+    /**
+     * Get prefixNsArray
+     * @return prefixNsArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getPrefixNsArray() {
+        return prefixNsArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNsArray(List<Integer> prefixNsArray) {
+        this.prefixNsArray = prefixNsArray;
+    }
+
+    public XmlItem prefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
+        this.prefixNsWrappedArray = prefixNsWrappedArray;
+        return this;
+    }
+
+    public XmlItem addPrefixNsWrappedArrayItem(Integer prefixNsWrappedArrayItem) {
+        if (this.prefixNsWrappedArray == null) {
+            this.prefixNsWrappedArray = new ArrayList<Integer>();
+        }
+        this.prefixNsWrappedArray.add(prefixNsWrappedArrayItem);
+        return this;
+    }
+
+    /**
+     * Get prefixNsWrappedArray
+     * @return prefixNsWrappedArray
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Integer> getPrefixNsWrappedArray() {
+        return prefixNsWrappedArray;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PREFIX_NS_WRAPPED_ARRAY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPrefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
+        this.prefixNsWrappedArray = prefixNsWrappedArray;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        XmlItem xmlItem = (XmlItem) o;
+        return Objects.equals(this.attributeString, xmlItem.attributeString) &&
+            Objects.equals(this.attributeNumber, xmlItem.attributeNumber) &&
+            Objects.equals(this.attributeInteger, xmlItem.attributeInteger) &&
+            Objects.equals(this.attributeBoolean, xmlItem.attributeBoolean) &&
+            Objects.equals(this.wrappedArray, xmlItem.wrappedArray) &&
+            Objects.equals(this.nameString, xmlItem.nameString) &&
+            Objects.equals(this.nameNumber, xmlItem.nameNumber) &&
+            Objects.equals(this.nameInteger, xmlItem.nameInteger) &&
+            Objects.equals(this.nameBoolean, xmlItem.nameBoolean) &&
+            Objects.equals(this.nameArray, xmlItem.nameArray) &&
+            Objects.equals(this.nameWrappedArray, xmlItem.nameWrappedArray) &&
+            Objects.equals(this.prefixString, xmlItem.prefixString) &&
+            Objects.equals(this.prefixNumber, xmlItem.prefixNumber) &&
+            Objects.equals(this.prefixInteger, xmlItem.prefixInteger) &&
+            Objects.equals(this.prefixBoolean, xmlItem.prefixBoolean) &&
+            Objects.equals(this.prefixArray, xmlItem.prefixArray) &&
+            Objects.equals(this.prefixWrappedArray, xmlItem.prefixWrappedArray) &&
+            Objects.equals(this.namespaceString, xmlItem.namespaceString) &&
+            Objects.equals(this.namespaceNumber, xmlItem.namespaceNumber) &&
+            Objects.equals(this.namespaceInteger, xmlItem.namespaceInteger) &&
+            Objects.equals(this.namespaceBoolean, xmlItem.namespaceBoolean) &&
+            Objects.equals(this.namespaceArray, xmlItem.namespaceArray) &&
+            Objects.equals(this.namespaceWrappedArray, xmlItem.namespaceWrappedArray) &&
+            Objects.equals(this.prefixNsString, xmlItem.prefixNsString) &&
+            Objects.equals(this.prefixNsNumber, xmlItem.prefixNsNumber) &&
+            Objects.equals(this.prefixNsInteger, xmlItem.prefixNsInteger) &&
+            Objects.equals(this.prefixNsBoolean, xmlItem.prefixNsBoolean) &&
+            Objects.equals(this.prefixNsArray, xmlItem.prefixNsArray) &&
+            Objects.equals(this.prefixNsWrappedArray, xmlItem.prefixNsWrappedArray);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(attributeString, attributeNumber, attributeInteger, attributeBoolean, wrappedArray, nameString, nameNumber, nameInteger, nameBoolean, nameArray, nameWrappedArray, prefixString, prefixNumber, prefixInteger, prefixBoolean, prefixArray, prefixWrappedArray, namespaceString, namespaceNumber, namespaceInteger, namespaceBoolean, namespaceArray, namespaceWrappedArray, prefixNsString, prefixNsNumber, prefixNsInteger, prefixNsBoolean, prefixNsArray, prefixNsWrappedArray);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class XmlItem {\n");
+        sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
+        sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
+        sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
+        sb.append("    attributeBoolean: ").append(toIndentedString(attributeBoolean)).append("\n");
+        sb.append("    wrappedArray: ").append(toIndentedString(wrappedArray)).append("\n");
+        sb.append("    nameString: ").append(toIndentedString(nameString)).append("\n");
+        sb.append("    nameNumber: ").append(toIndentedString(nameNumber)).append("\n");
+        sb.append("    nameInteger: ").append(toIndentedString(nameInteger)).append("\n");
+        sb.append("    nameBoolean: ").append(toIndentedString(nameBoolean)).append("\n");
+        sb.append("    nameArray: ").append(toIndentedString(nameArray)).append("\n");
+        sb.append("    nameWrappedArray: ").append(toIndentedString(nameWrappedArray)).append("\n");
+        sb.append("    prefixString: ").append(toIndentedString(prefixString)).append("\n");
+        sb.append("    prefixNumber: ").append(toIndentedString(prefixNumber)).append("\n");
+        sb.append("    prefixInteger: ").append(toIndentedString(prefixInteger)).append("\n");
+        sb.append("    prefixBoolean: ").append(toIndentedString(prefixBoolean)).append("\n");
+        sb.append("    prefixArray: ").append(toIndentedString(prefixArray)).append("\n");
+        sb.append("    prefixWrappedArray: ").append(toIndentedString(prefixWrappedArray)).append("\n");
+        sb.append("    namespaceString: ").append(toIndentedString(namespaceString)).append("\n");
+        sb.append("    namespaceNumber: ").append(toIndentedString(namespaceNumber)).append("\n");
+        sb.append("    namespaceInteger: ").append(toIndentedString(namespaceInteger)).append("\n");
+        sb.append("    namespaceBoolean: ").append(toIndentedString(namespaceBoolean)).append("\n");
+        sb.append("    namespaceArray: ").append(toIndentedString(namespaceArray)).append("\n");
+        sb.append("    namespaceWrappedArray: ").append(toIndentedString(namespaceWrappedArray)).append("\n");
+        sb.append("    prefixNsString: ").append(toIndentedString(prefixNsString)).append("\n");
+        sb.append("    prefixNsNumber: ").append(toIndentedString(prefixNsNumber)).append("\n");
+        sb.append("    prefixNsInteger: ").append(toIndentedString(prefixNsInteger)).append("\n");
+        sb.append("    prefixNsBoolean: ").append(toIndentedString(prefixNsBoolean)).append("\n");
+        sb.append("    prefixNsArray: ").append(toIndentedString(prefixNsArray)).append("\n");
+        sb.append("    prefixNsWrappedArray: ").append(toIndentedString(prefixNsWrappedArray)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
     }
-    return o.toString().replace("\n", "\n    ");
-  }
 
 }
diff --git a/samples/client/petstore/java-micronaut-client/src/main/resources/application.yml b/samples/client/petstore/java-micronaut-client/src/main/resources/application.yml
index bf9e0df6cad..49d8cc32a02 100644
--- a/samples/client/petstore/java-micronaut-client/src/main/resources/application.yml
+++ b/samples/client/petstore/java-micronaut-client/src/main/resources/application.yml
@@ -1,5 +1,5 @@
-base-path: "http://petstore.swagger.io:80/v2"
-context-path: "/v2"
+base-path: "http://petstore.swagger.io:80/v2/"
+context-path: "/v2/"
 
 micronaut:
     application:
diff --git a/samples/client/petstore/java-micronaut-client/src/main/resources/logback.xml b/samples/client/petstore/java-micronaut-client/src/main/resources/logback.xml
new file mode 100644
index 00000000000..82218708264
--- /dev/null
+++ b/samples/client/petstore/java-micronaut-client/src/main/resources/logback.xml
@@ -0,0 +1,15 @@
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <withJansi>false</withJansi>
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%cyan(%d{HH:mm:ss.SSS}) %gray([%thread]) %highlight(%-5level) %magenta(%logger{36}) - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
diff --git a/samples/client/petstore/java/apache-httpclient/.openapi-generator/FILES b/samples/client/petstore/java/apache-httpclient/.openapi-generator/FILES
index d4c19c164b8..0c47aa52ae1 100644
--- a/samples/client/petstore/java/apache-httpclient/.openapi-generator/FILES
+++ b/samples/client/petstore/java/apache-httpclient/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -119,6 +121,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/apache-httpclient/README.md b/samples/client/petstore/java/apache-httpclient/README.md
index e02a1831a5a..ca5ccc9a782 100644
--- a/samples/client/petstore/java/apache-httpclient/README.md
+++ b/samples/client/petstore/java/apache-httpclient/README.md
@@ -179,6 +179,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/apache-httpclient/docs/FileSchemaTestClass.md b/samples/client/petstore/java/apache-httpclient/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/apache-httpclient/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/apache-httpclient/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/apache-httpclient/docs/PetApi.md b/samples/client/petstore/java/apache-httpclient/docs/PetApi.md
index 798a210c145..acc142fa022 100644
--- a/samples/client/petstore/java/apache-httpclient/docs/PetApi.md
+++ b/samples/client/petstore/java/apache-httpclient/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/ApiClient.java
index 686ad20b951..754393e13a0 100644
--- a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/ApiClient.java
@@ -193,6 +193,7 @@ public class ApiClient extends JavaTimeFormatter {
    */
   public ApiClient setBasePath(String basePath) {
     this.basePath = basePath;
+    this.serverIndex = null;
     return this;
   }
 
diff --git a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/PetApi.java
index 2123d32949d..d0df79262eb 100644
--- a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/api/PetApi.java
@@ -463,11 +463,11 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ModelApiResponse
    * @throws ApiException if fails to make API call
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
     Object localVarPostBody = null;
     
     // verify the required parameter 'petId' is set
@@ -491,8 +491,8 @@ if (status != null)
     
     if (additionalMetadata != null)
       localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null)
-      localVarFormParams.put("file", file);
+if (_file != null)
+      localVarFormParams.put("file", _file);
 
     final String[] localVarAccepts = {
       "application/json"
diff --git a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 3aa79df4ac5..78045f685e8 100644
--- a/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/apache-httpclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,48 +39,48 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/feign-no-nullable/.openapi-generator/FILES b/samples/client/petstore/java/feign-no-nullable/.openapi-generator/FILES
index e228aa901f2..066853f5d0a 100644
--- a/samples/client/petstore/java/feign-no-nullable/.openapi-generator/FILES
+++ b/samples/client/petstore/java/feign-no-nullable/.openapi-generator/FILES
@@ -63,6 +63,7 @@ src/main/java/org/openapitools/client/model/DogAllOf.java
 src/main/java/org/openapitools/client/model/EnumArrays.java
 src/main/java/org/openapitools/client/model/EnumClass.java
 src/main/java/org/openapitools/client/model/EnumTest.java
+src/main/java/org/openapitools/client/model/File.java
 src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/client/model/FormatTest.java
 src/main/java/org/openapitools/client/model/HasOnlyReadOnly.java
@@ -70,6 +71,7 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/File.java b/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/File.java
new file mode 100644
index 00000000000..5621664e81d
--- /dev/null
+++ b/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/File.java
@@ -0,0 +1,110 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  File.JSON_PROPERTY_SOURCE_U_R_I
+})
+@JsonTypeName("File")
+@javax.annotation.concurrent.Immutable
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class File {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  private String sourceURI;
+
+  public File() { 
+  }
+
+  public File sourceURI(String sourceURI) {
+    
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+   /**
+   * Test capitalization
+   * @return sourceURI
+  **/
+  @javax.annotation.Nullable
+  @ApiModelProperty(value = "Test capitalization")
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+
diff --git a/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 23646d18003..84a8e281965 100644
--- a/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/feign-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -22,6 +22,7 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@@ -39,15 +40,15 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private File file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     
     this.file = file;
     return this;
@@ -62,27 +63,27 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<File>();
     }
     this.files.add(filesItem);
     return this;
@@ -97,14 +98,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
diff --git a/samples/client/petstore/java/feign-no-nullable/src/test/java/org/openapitools/client/model/FileTest.java b/samples/client/petstore/java/feign-no-nullable/src/test/java/org/openapitools/client/model/FileTest.java
new file mode 100644
index 00000000000..90e2b5eb78e
--- /dev/null
+++ b/samples/client/petstore/java/feign-no-nullable/src/test/java/org/openapitools/client/model/FileTest.java
@@ -0,0 +1,48 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.junit.jupiter.api.Test;
+
+
+/**
+ * Model tests for File
+ */
+class FileTest {
+    private final File model = new File();
+
+    /**
+     * Model tests for File
+     */
+    @Test
+    void testFile() {
+        // TODO: test File
+    }
+
+    /**
+     * Test the property 'sourceURI'
+     */
+    @Test
+    void sourceURITest() {
+        // TODO: test sourceURI
+    }
+
+}
diff --git a/samples/client/petstore/java/feign/.openapi-generator/FILES b/samples/client/petstore/java/feign/.openapi-generator/FILES
index 9dd7f3f9097..a499c628782 100644
--- a/samples/client/petstore/java/feign/.openapi-generator/FILES
+++ b/samples/client/petstore/java/feign/.openapi-generator/FILES
@@ -56,6 +56,7 @@ src/main/java/org/openapitools/client/model/DogAllOf.java
 src/main/java/org/openapitools/client/model/EnumArrays.java
 src/main/java/org/openapitools/client/model/EnumClass.java
 src/main/java/org/openapitools/client/model/EnumTest.java
+src/main/java/org/openapitools/client/model/File.java
 src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/client/model/Foo.java
 src/main/java/org/openapitools/client/model/FormatTest.java
@@ -66,6 +67,7 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NullableClass.java
diff --git a/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/File.java b/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/File.java
new file mode 100644
index 00000000000..f69646c7fbe
--- /dev/null
+++ b/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/File.java
@@ -0,0 +1,109 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  File.JSON_PROPERTY_SOURCE_U_R_I
+})
+@JsonTypeName("File")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
+public class File {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  private String sourceURI;
+
+  public File() { 
+  }
+
+  public File sourceURI(String sourceURI) {
+    
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+   /**
+   * Test capitalization
+   * @return sourceURI
+  **/
+  @javax.annotation.Nullable
+  @ApiModelProperty(value = "Test capitalization")
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+}
+
diff --git a/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 116da93a92b..d1ce9ae611d 100644
--- a/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/feign/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -22,6 +22,7 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@@ -38,15 +39,15 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private File file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     
     this.file = file;
     return this;
@@ -61,27 +62,27 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<File>();
     }
     this.files.add(filesItem);
     return this;
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
diff --git a/samples/client/petstore/java/feign/src/test/java/org/openapitools/client/model/FileTest.java b/samples/client/petstore/java/feign/src/test/java/org/openapitools/client/model/FileTest.java
new file mode 100644
index 00000000000..90e2b5eb78e
--- /dev/null
+++ b/samples/client/petstore/java/feign/src/test/java/org/openapitools/client/model/FileTest.java
@@ -0,0 +1,48 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+import com.fasterxml.jackson.annotation.JsonValue;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.junit.jupiter.api.Test;
+
+
+/**
+ * Model tests for File
+ */
+class FileTest {
+    private final File model = new File();
+
+    /**
+     * Model tests for File
+     */
+    @Test
+    void testFile() {
+        // TODO: test File
+    }
+
+    /**
+     * Test the property 'sourceURI'
+     */
+    @Test
+    void sourceURITest() {
+        // TODO: test sourceURI
+    }
+
+}
diff --git a/samples/client/petstore/java/google-api-client/.openapi-generator/FILES b/samples/client/petstore/java/google-api-client/.openapi-generator/FILES
index e6f553b3189..c94eb1d3630 100644
--- a/samples/client/petstore/java/google-api-client/.openapi-generator/FILES
+++ b/samples/client/petstore/java/google-api-client/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -109,6 +111,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/google-api-client/README.md b/samples/client/petstore/java/google-api-client/README.md
index 71f36e20665..45432ff2e73 100644
--- a/samples/client/petstore/java/google-api-client/README.md
+++ b/samples/client/petstore/java/google-api-client/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/google-api-client/docs/FileSchemaTestClass.md b/samples/client/petstore/java/google-api-client/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/google-api-client/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/google-api-client/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/google-api-client/docs/PetApi.md b/samples/client/petstore/java/google-api-client/docs/PetApi.md
index 798a210c145..acc142fa022 100644
--- a/samples/client/petstore/java/google-api-client/docs/PetApi.md
+++ b/samples/client/petstore/java/google-api-client/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/api/PetApi.java
index 0289617e892..abbd23e7d65 100644
--- a/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/api/PetApi.java
@@ -654,12 +654,12 @@ public class PetApi {
     * <p><b>200</b> - successful operation
     * @param petId ID of pet to update
     * @param additionalMetadata Additional data to pass to server
-    * @param file file to upload
+    * @param _file file to upload
     * @return ModelApiResponse
     * @throws IOException if an error occurs while attempting to invoke the API
     **/
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws IOException {
-        HttpResponse response = uploadFileForHttpResponse(petId, additionalMetadata, file);
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws IOException {
+        HttpResponse response = uploadFileForHttpResponse(petId, additionalMetadata, _file);
         TypeReference<ModelApiResponse> typeRef = new TypeReference<ModelApiResponse>() {};
         return apiClient.getObjectMapper().readValue(response.getContent(), typeRef);
     }
@@ -678,7 +678,7 @@ public class PetApi {
         return apiClient.getObjectMapper().readValue(response.getContent(), typeRef);
     }
 
-    public HttpResponse uploadFileForHttpResponse(Long petId, String additionalMetadata, File file) throws IOException {
+    public HttpResponse uploadFileForHttpResponse(Long petId, String additionalMetadata, File _file) throws IOException {
         // verify the required parameter 'petId' is set
         if (petId == null) {
             throw new IllegalArgumentException("Missing the required parameter 'petId' when calling uploadFile");
diff --git a/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 116da93a92b..dd42e4b5763 100644
--- a/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/google-api-client/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,50 +39,50 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/jersey1/.openapi-generator/FILES b/samples/client/petstore/java/jersey1/.openapi-generator/FILES
index d4c19c164b8..0c47aa52ae1 100644
--- a/samples/client/petstore/java/jersey1/.openapi-generator/FILES
+++ b/samples/client/petstore/java/jersey1/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -119,6 +121,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/jersey1/README.md b/samples/client/petstore/java/jersey1/README.md
index 1ee4072792d..ac8b1bbacf9 100644
--- a/samples/client/petstore/java/jersey1/README.md
+++ b/samples/client/petstore/java/jersey1/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/jersey1/docs/FileSchemaTestClass.md b/samples/client/petstore/java/jersey1/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/jersey1/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/jersey1/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/jersey1/docs/PetApi.md b/samples/client/petstore/java/jersey1/docs/PetApi.md
index 798a210c145..acc142fa022 100644
--- a/samples/client/petstore/java/jersey1/docs/PetApi.md
+++ b/samples/client/petstore/java/jersey1/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/api/PetApi.java
index a95b34eeb0e..11e622865d2 100644
--- a/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/api/PetApi.java
@@ -376,11 +376,11 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ModelApiResponse
    * @throws ApiException if fails to make API call
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
     Object localVarPostBody = null;
     
     // verify the required parameter 'petId' is set
@@ -404,8 +404,8 @@ if (status != null)
     
     if (additionalMetadata != null)
       localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null)
-      localVarFormParams.put("file", file);
+if (_file != null)
+      localVarFormParams.put("file", _file);
 
     final String[] localVarAccepts = {
       "application/json"
diff --git a/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 116da93a92b..dd42e4b5763 100644
--- a/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/jersey1/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,50 +39,50 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/.openapi-generator/FILES b/samples/client/petstore/java/jersey2-java8-localdatetime/.openapi-generator/FILES
index 2d4a06729dd..7869f0a5550 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/.openapi-generator/FILES
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -121,6 +123,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/README.md b/samples/client/petstore/java/jersey2-java8-localdatetime/README.md
index 0a774fa64d0..2c7cf3a4a93 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/README.md
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/README.md
@@ -211,6 +211,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/docs/FileSchemaTestClass.md b/samples/client/petstore/java/jersey2-java8-localdatetime/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/docs/PetApi.md b/samples/client/petstore/java/jersey2-java8-localdatetime/docs/PetApi.md
index c7709e17d96..a451f62d88c 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/docs/PetApi.md
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/docs/PetApi.md
@@ -513,7 +513,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -541,9 +541,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -563,7 +563,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/ApiClient.java
index 5f4cb48efe2..9ba931faa55 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/ApiClient.java
@@ -1106,7 +1106,12 @@ public class ApiClient extends JavaTimeFormatter {
       }
     }
 
-    Invocation.Builder invocationBuilder = target.request().accept(accept);
+    Invocation.Builder invocationBuilder;
+    if (accept != null) {
+      invocationBuilder = target.request().accept(accept);
+    } else {
+      invocationBuilder = target.request();
+    }
 
     for (Entry<String, String> entry : cookieParams.entrySet()) {
       String value = entry.getValue();
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/api/PetApi.java
index f48925ed2a3..7317e831e8c 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/api/PetApi.java
@@ -549,7 +549,7 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ModelApiResponse
    * @throws ApiException if fails to make API call
    * @http.response.details
@@ -558,8 +558,8 @@ if (status != null)
        <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-    return uploadFileWithHttpInfo(petId, additionalMetadata, file).getData();
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+    return uploadFileWithHttpInfo(petId, additionalMetadata, _file).getData();
   }
 
   /**
@@ -567,7 +567,7 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ApiResponse&lt;ModelApiResponse&gt;
    * @throws ApiException if fails to make API call
    * @http.response.details
@@ -576,7 +576,7 @@ if (status != null)
        <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
    */
-  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
+  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
     Object localVarPostBody = null;
     
     // verify the required parameter 'petId' is set
@@ -599,8 +599,8 @@ if (status != null)
     
     if (additionalMetadata != null)
       localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null)
-      localVarFormParams.put("file", file);
+if (_file != null)
+      localVarFormParams.put("file", _file);
 
     final String[] localVarAccepts = {
       "application/json"
diff --git a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 575eaed95b2..837c15933e3 100644
--- a/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/jersey2-java8-localdatetime/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -26,6 +26,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.openapitools.client.JSON;
 
@@ -40,46 +41,46 @@ import org.openapitools.client.JSON;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -120,20 +121,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/jersey2-java8/.openapi-generator/FILES b/samples/client/petstore/java/jersey2-java8/.openapi-generator/FILES
index 2d4a06729dd..7869f0a5550 100644
--- a/samples/client/petstore/java/jersey2-java8/.openapi-generator/FILES
+++ b/samples/client/petstore/java/jersey2-java8/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -121,6 +123,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/jersey2-java8/README.md b/samples/client/petstore/java/jersey2-java8/README.md
index 982cb0b1712..f26cc2fa176 100644
--- a/samples/client/petstore/java/jersey2-java8/README.md
+++ b/samples/client/petstore/java/jersey2-java8/README.md
@@ -211,6 +211,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md b/samples/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/jersey2-java8/docs/PetApi.md b/samples/client/petstore/java/jersey2-java8/docs/PetApi.md
index c7709e17d96..a451f62d88c 100644
--- a/samples/client/petstore/java/jersey2-java8/docs/PetApi.md
+++ b/samples/client/petstore/java/jersey2-java8/docs/PetApi.md
@@ -513,7 +513,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -541,9 +541,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -563,7 +563,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
index 5f4cb48efe2..9ba931faa55 100644
--- a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
@@ -1106,7 +1106,12 @@ public class ApiClient extends JavaTimeFormatter {
       }
     }
 
-    Invocation.Builder invocationBuilder = target.request().accept(accept);
+    Invocation.Builder invocationBuilder;
+    if (accept != null) {
+      invocationBuilder = target.request().accept(accept);
+    } else {
+      invocationBuilder = target.request();
+    }
 
     for (Entry<String, String> entry : cookieParams.entrySet()) {
       String value = entry.getValue();
diff --git a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java
index f48925ed2a3..7317e831e8c 100644
--- a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java
@@ -549,7 +549,7 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ModelApiResponse
    * @throws ApiException if fails to make API call
    * @http.response.details
@@ -558,8 +558,8 @@ if (status != null)
        <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-    return uploadFileWithHttpInfo(petId, additionalMetadata, file).getData();
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+    return uploadFileWithHttpInfo(petId, additionalMetadata, _file).getData();
   }
 
   /**
@@ -567,7 +567,7 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ApiResponse&lt;ModelApiResponse&gt;
    * @throws ApiException if fails to make API call
    * @http.response.details
@@ -576,7 +576,7 @@ if (status != null)
        <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
    */
-  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
+  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
     Object localVarPostBody = null;
     
     // verify the required parameter 'petId' is set
@@ -599,8 +599,8 @@ if (status != null)
     
     if (additionalMetadata != null)
       localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null)
-      localVarFormParams.put("file", file);
+if (_file != null)
+      localVarFormParams.put("file", _file);
 
     final String[] localVarAccepts = {
       "application/json"
diff --git a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 575eaed95b2..837c15933e3 100644
--- a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -26,6 +26,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.openapitools.client.JSON;
 
@@ -40,46 +41,46 @@ import org.openapitools.client.JSON;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -120,20 +121,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md b/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md
index 60b9920b9b2..a74639beb95 100644
--- a/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md
+++ b/samples/client/petstore/java/microprofile-rest-client/docs/PetApi.md
@@ -520,7 +520,7 @@ Name | Type | Description  | Notes
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java
index 3d2ecd955a5..38bd75c30cb 100644
--- a/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/microprofile-rest-client/src/main/java/org/openapitools/client/api/PetApi.java
@@ -119,5 +119,5 @@ public interface PetApi  {
     @Path("/{petId}/uploadImage")
     @Consumes({ "multipart/form-data" })
     @Produces({ "application/json" })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail) throws ApiException, ProcessingException;
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail) throws ApiException, ProcessingException;
 }
diff --git a/samples/client/petstore/java/native-async/.openapi-generator/FILES b/samples/client/petstore/java/native-async/.openapi-generator/FILES
index 42605736078..f25839d05a5 100644
--- a/samples/client/petstore/java/native-async/.openapi-generator/FILES
+++ b/samples/client/petstore/java/native-async/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -113,6 +115,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/native-async/README.md b/samples/client/petstore/java/native-async/README.md
index f8bf7418b87..0b92908453a 100644
--- a/samples/client/petstore/java/native-async/README.md
+++ b/samples/client/petstore/java/native-async/README.md
@@ -216,6 +216,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/native-async/docs/FileSchemaTestClass.md b/samples/client/petstore/java/native-async/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/native-async/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/native-async/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/native-async/docs/PetApi.md b/samples/client/petstore/java/native-async/docs/PetApi.md
index e0c78ee5228..b2df57db571 100644
--- a/samples/client/petstore/java/native-async/docs/PetApi.md
+++ b/samples/client/petstore/java/native-async/docs/PetApi.md
@@ -1108,7 +1108,7 @@ CompletableFuture<ApiResponse<Void>>
 
 ## uploadFile
 
-> CompletableFuture<ModelApiResponse> uploadFile(petId, additionalMetadata, file)
+> CompletableFuture<ModelApiResponse> uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -1136,9 +1136,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            CompletableFuture<ModelApiResponse> result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            CompletableFuture<ModelApiResponse> result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result.get());
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -1158,7 +1158,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
@@ -1181,7 +1181,7 @@ CompletableFuture<[**ModelApiResponse**](ModelApiResponse.md)>
 
 ## uploadFileWithHttpInfo
 
-> CompletableFuture<ApiResponse<ModelApiResponse>> uploadFile uploadFileWithHttpInfo(petId, additionalMetadata, file)
+> CompletableFuture<ApiResponse<ModelApiResponse>> uploadFile uploadFileWithHttpInfo(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -1210,9 +1210,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            CompletableFuture<ApiResponse<ModelApiResponse>> response = apiInstance.uploadFileWithHttpInfo(petId, additionalMetadata, file);
+            CompletableFuture<ApiResponse<ModelApiResponse>> response = apiInstance.uploadFileWithHttpInfo(petId, additionalMetadata, _file);
             System.out.println("Status code: " + response.get().getStatusCode());
             System.out.println("Response headers: " + response.get().getHeaders());
             System.out.println("Response body: " + response.get().getData());
@@ -1241,7 +1241,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/ApiClient.java
index 9d108d594e4..f39fd0a344b 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/ApiClient.java
@@ -81,7 +81,7 @@ public class ApiClient {
    * @return URL-encoded representation of the input string.
    */
   public static String urlEncode(String s) {
-    return URLEncoder.encode(s, UTF_8);
+    return URLEncoder.encode(s, UTF_8).replaceAll("\\+", "%20");
   }
 
   /**
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/FakeApi.java
index 69e4b4562c5..b600572f511 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -148,7 +148,7 @@ public class FakeApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Content-Type", "application/json");
+    localVarRequestBuilder.header("Content-Type", "application/xml");
     localVarRequestBuilder.header("Accept", "application/json");
 
     try {
@@ -241,7 +241,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
@@ -333,7 +333,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
@@ -425,7 +425,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
@@ -517,7 +517,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/PetApi.java
index 69c55b8cb66..00775e875a3 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/PetApi.java
@@ -330,7 +330,7 @@ public class PetApi {
       localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
     }
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -433,7 +433,7 @@ public class PetApi {
       localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
     }
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -524,7 +524,7 @@ public class PetApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -703,13 +703,13 @@ public class PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return CompletableFuture&lt;ModelApiResponse&gt;
    * @throws ApiException if fails to make API call
    */
-  public CompletableFuture<ModelApiResponse> uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
+  public CompletableFuture<ModelApiResponse> uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
     try {
-      HttpRequest.Builder localVarRequestBuilder = uploadFileRequestBuilder(petId, additionalMetadata, file);
+      HttpRequest.Builder localVarRequestBuilder = uploadFileRequestBuilder(petId, additionalMetadata, _file);
       return memberVarHttpClient.sendAsync(
           localVarRequestBuilder.build(),
           HttpResponse.BodyHandlers.ofString()).thenComposeAsync(localVarResponse -> {
@@ -735,13 +735,13 @@ public class PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return CompletableFuture&lt;ApiResponse&lt;ModelApiResponse&gt;&gt;
    * @throws ApiException if fails to make API call
    */
-  public CompletableFuture<ApiResponse<ModelApiResponse>> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
+  public CompletableFuture<ApiResponse<ModelApiResponse>> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
     try {
-      HttpRequest.Builder localVarRequestBuilder = uploadFileRequestBuilder(petId, additionalMetadata, file);
+      HttpRequest.Builder localVarRequestBuilder = uploadFileRequestBuilder(petId, additionalMetadata, _file);
       return memberVarHttpClient.sendAsync(
           localVarRequestBuilder.build(),
           HttpResponse.BodyHandlers.ofString()).thenComposeAsync(localVarResponse -> {
@@ -769,7 +769,7 @@ public class PetApi {
     }
   }
 
-  private HttpRequest.Builder uploadFileRequestBuilder(Long petId, String additionalMetadata, File file) throws ApiException {
+  private HttpRequest.Builder uploadFileRequestBuilder(Long petId, String additionalMetadata, File _file) throws ApiException {
     // verify the required parameter 'petId' is set
     if (petId == null) {
       throw new ApiException(400, "Missing the required parameter 'petId' when calling uploadFile");
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/StoreApi.java
index 0ed6d0b6db1..65430c5eaa5 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -316,7 +316,7 @@ public class StoreApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -407,7 +407,7 @@ public class StoreApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/UserApi.java
index 209d289e08e..5e05a49b80c 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/api/UserApi.java
@@ -479,7 +479,7 @@ public class UserApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -585,7 +585,7 @@ public class UserApi {
       localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
     }
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
diff --git a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 38568952029..c9a06347916 100644
--- a/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/native-async/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -26,6 +26,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 
 
@@ -39,46 +40,46 @@ import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 @javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -95,14 +96,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -119,20 +120,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/native/.openapi-generator/FILES b/samples/client/petstore/java/native/.openapi-generator/FILES
index 42605736078..f25839d05a5 100644
--- a/samples/client/petstore/java/native/.openapi-generator/FILES
+++ b/samples/client/petstore/java/native/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -113,6 +115,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/native/README.md b/samples/client/petstore/java/native/README.md
index d2b673970dc..0da4e8e90f5 100644
--- a/samples/client/petstore/java/native/README.md
+++ b/samples/client/petstore/java/native/README.md
@@ -215,6 +215,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/native/docs/FileSchemaTestClass.md b/samples/client/petstore/java/native/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/native/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/native/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/native/docs/PetApi.md b/samples/client/petstore/java/native/docs/PetApi.md
index dd368877fc7..530ce80639e 100644
--- a/samples/client/petstore/java/native/docs/PetApi.md
+++ b/samples/client/petstore/java/native/docs/PetApi.md
@@ -1045,7 +1045,7 @@ ApiResponse<Void>
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -1072,9 +1072,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -1094,7 +1094,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
@@ -1117,7 +1117,7 @@ Name | Type | Description  | Notes
 
 ## uploadFileWithHttpInfo
 
-> ApiResponse<ModelApiResponse> uploadFile uploadFileWithHttpInfo(petId, additionalMetadata, file)
+> ApiResponse<ModelApiResponse> uploadFile uploadFileWithHttpInfo(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -1145,9 +1145,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ApiResponse<ModelApiResponse> response = apiInstance.uploadFileWithHttpInfo(petId, additionalMetadata, file);
+            ApiResponse<ModelApiResponse> response = apiInstance.uploadFileWithHttpInfo(petId, additionalMetadata, _file);
             System.out.println("Status code: " + response.getStatusCode());
             System.out.println("Response headers: " + response.getHeaders());
             System.out.println("Response body: " + response.getData());
@@ -1169,7 +1169,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/ApiClient.java
index 9d108d594e4..f39fd0a344b 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/ApiClient.java
@@ -81,7 +81,7 @@ public class ApiClient {
    * @return URL-encoded representation of the input string.
    */
   public static String urlEncode(String s) {
-    return URLEncoder.encode(s, UTF_8);
+    return URLEncoder.encode(s, UTF_8).replaceAll("\\+", "%20");
   }
 
   /**
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeApi.java
index 6618620891c..665df72be2f 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -146,7 +146,7 @@ public class FakeApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Content-Type", "application/json");
+    localVarRequestBuilder.header("Content-Type", "application/xml");
     localVarRequestBuilder.header("Accept", "application/json");
 
     try {
@@ -221,7 +221,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
@@ -295,7 +295,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
@@ -369,7 +369,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
@@ -443,7 +443,7 @@ public class FakeApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "*/*");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/PetApi.java
index 758142dfa7b..bb27713cb38 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/PetApi.java
@@ -309,7 +309,7 @@ public class PetApi {
       localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
     }
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -394,7 +394,7 @@ public class PetApi {
       localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
     }
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -467,7 +467,7 @@ public class PetApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -644,12 +644,12 @@ public class PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ModelApiResponse
    * @throws ApiException if fails to make API call
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-    ApiResponse<ModelApiResponse> localVarResponse = uploadFileWithHttpInfo(petId, additionalMetadata, file);
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+    ApiResponse<ModelApiResponse> localVarResponse = uploadFileWithHttpInfo(petId, additionalMetadata, _file);
     return localVarResponse.getData();
   }
 
@@ -658,12 +658,12 @@ public class PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ApiResponse&lt;ModelApiResponse&gt;
    * @throws ApiException if fails to make API call
    */
-  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
-    HttpRequest.Builder localVarRequestBuilder = uploadFileRequestBuilder(petId, additionalMetadata, file);
+  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
+    HttpRequest.Builder localVarRequestBuilder = uploadFileRequestBuilder(petId, additionalMetadata, _file);
     try {
       HttpResponse<InputStream> localVarResponse = memberVarHttpClient.send(
           localVarRequestBuilder.build(),
@@ -692,7 +692,7 @@ public class PetApi {
     }
   }
 
-  private HttpRequest.Builder uploadFileRequestBuilder(Long petId, String additionalMetadata, File file) throws ApiException {
+  private HttpRequest.Builder uploadFileRequestBuilder(Long petId, String additionalMetadata, File _file) throws ApiException {
     // verify the required parameter 'petId' is set
     if (petId == null) {
       throw new ApiException(400, "Missing the required parameter 'petId' when calling uploadFile");
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/StoreApi.java
index bde07853f96..2f142dd9411 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -278,7 +278,7 @@ public class StoreApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -351,7 +351,7 @@ public class StoreApi {
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
     localVarRequestBuilder.header("Content-Type", "application/json");
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     try {
       byte[] localVarPostBody = memberVarObjectMapper.writeValueAsBytes(body);
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/UserApi.java
index 2ce486c6491..b4ceaf86bf9 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/api/UserApi.java
@@ -456,7 +456,7 @@ public class UserApi {
 
     localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
@@ -544,7 +544,7 @@ public class UserApi {
       localVarRequestBuilder.uri(URI.create(memberVarBaseUri + localVarPath));
     }
 
-    localVarRequestBuilder.header("Accept", "application/json");
+    localVarRequestBuilder.header("Accept", "application/xml, application/json");
 
     localVarRequestBuilder.method("GET", HttpRequest.BodyPublishers.noBody());
     if (memberVarReadTimeout != null) {
diff --git a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 38568952029..c9a06347916 100644
--- a/samples/client/petstore/java/native/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/native/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -26,6 +26,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 
 
@@ -39,46 +40,46 @@ import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 @javax.annotation.processing.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -95,14 +96,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -119,20 +120,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/.openapi-generator/FILES b/samples/client/petstore/java/okhttp-gson-dynamicOperations/.openapi-generator/FILES
index 5597480c76d..f8e8f2d5a9e 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/.openapi-generator/FILES
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/.openapi-generator/FILES
@@ -38,6 +38,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -124,6 +126,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/README.md b/samples/client/petstore/java/okhttp-gson-dynamicOperations/README.md
index c25c1a39c47..be5472e90b8 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/README.md
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/FileSchemaTestClass.md b/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/PetApi.md b/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/PetApi.md
index 8d927130cee..d1aa160676c 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/PetApi.md
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/docs/PetApi.md
@@ -491,7 +491,7 @@ null (empty response body)
 
 <a name="uploadFile"></a>
 # **uploadFile**
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -517,9 +517,9 @@ public class Example {
     PetApi apiInstance = new PetApi(defaultClient);
     Long petId = 56L; // Long | ID of pet to update
     String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-    File file = new File("/path/to/file"); // File | file to upload
+    File _file = new File("/path/to/file"); // File | file to upload
     try {
-      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
       System.out.println(result);
     } catch (ApiException e) {
       System.err.println("Exception when calling PetApi#uploadFile");
@@ -538,7 +538,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
index 815719efc1f..5f6571f9e7d 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -133,7 +133,7 @@ public class AnotherFakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeApi.java
index c7332815b44..c55d1e12c08 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -141,7 +141,7 @@ public class FakeApi {
             "application/xml", "application/xml; charset=utf-8", "application/xml; charset=utf-16", "text/xml", "text/xml; charset=utf-8", "text/xml; charset=utf-16"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -272,7 +272,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -402,7 +402,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -532,7 +532,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -662,7 +662,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -792,7 +792,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -925,7 +925,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1064,7 +1064,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1269,7 +1269,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1479,7 +1479,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1623,7 +1623,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1844,7 +1844,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1984,7 +1984,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -2132,7 +2132,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
index 2483077a5c8..c508d0d8bb6 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -133,7 +133,7 @@ public class FakeClassnameTags123Api {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/PetApi.java
index e5ba0411588..f41e1b5ebe7 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/PetApi.java
@@ -137,7 +137,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -275,7 +275,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -414,7 +414,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -556,7 +556,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -704,7 +704,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -848,7 +848,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -999,7 +999,7 @@ public class PetApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1082,7 +1082,7 @@ public class PetApi {
      * Build call for uploadFile
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback Callback for upload/download progress
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
@@ -1092,7 +1092,7 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         String basePath = null;
 
         // Operation Servers
@@ -1129,8 +1129,8 @@ public class PetApi {
             localVarFormParams.put("additionalMetadata", additionalMetadata);
         }
 
-        if (file != null) {
-            localVarFormParams.put("file", file);
+        if (_file != null) {
+            localVarFormParams.put("file", _file);
         }
 
         localVarPath = localVarApiClient.fillParametersFromOperation(operation, paramMap, localVarPath, localVarQueryParams, localVarCollectionQueryParams, localVarHeaderParams, localVarCookieParams);
@@ -1147,7 +1147,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1156,7 +1156,7 @@ public class PetApi {
     }
 
     @SuppressWarnings("rawtypes")
-    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         
         // verify the required parameter 'petId' is set
         if (petId == null) {
@@ -1164,7 +1164,7 @@ public class PetApi {
         }
         
 
-        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, _file, _callback);
         return localVarCall;
 
     }
@@ -1174,7 +1174,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ModelApiResponse
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1183,8 +1183,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, file);
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, _file);
         return localVarResp.getData();
     }
 
@@ -1193,7 +1193,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ApiResponse&lt;ModelApiResponse&gt;
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1202,8 +1202,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, null);
+    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, null);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         return localVarApiClient.execute(localVarCall, localVarReturnType);
     }
@@ -1213,7 +1213,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback The callback to be executed when the API call finishes
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -1223,9 +1223,9 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
+    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File _file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
 
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, _callback);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
         return localVarCall;
@@ -1299,7 +1299,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/StoreApi.java
index 1e32b8c7607..afa9b5c026d 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -135,7 +135,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -268,7 +268,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -398,7 +398,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -540,7 +540,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/UserApi.java
index faf4e626946..2051423374c 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/api/UserApi.java
@@ -134,7 +134,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -265,7 +265,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -396,7 +396,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -529,7 +529,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -666,7 +666,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -811,7 +811,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -956,7 +956,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1082,7 +1082,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index d3feb88b1a9..4c0ebf716d9 100644
--- a/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/okhttp-gson-dynamicOperations/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 
 /**
  * FileSchemaTestClass
@@ -33,47 +34,47 @@ import java.util.List;
 public class FileSchemaTestClass {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -86,12 +87,12 @@ public class FileSchemaTestClass {
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -105,20 +106,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/.openapi-generator/FILES b/samples/client/petstore/java/okhttp-gson-nextgen/.openapi-generator/FILES
index 4b91a464422..7d6260c63b1 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/.openapi-generator/FILES
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/.openapi-generator/FILES
@@ -49,6 +49,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NullableClass.md
@@ -162,6 +164,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NullableClass.java
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/README.md b/samples/client/petstore/java/okhttp-gson-nextgen/README.md
index 865b6ae5aa1..cebd6c20468 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/README.md
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/README.md
@@ -196,6 +196,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NullableClass](docs/NullableClass.md)
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/docs/PetApi.md b/samples/client/petstore/java/okhttp-gson-nextgen/docs/PetApi.md
index 8cdb1506fb5..35781873666 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/docs/PetApi.md
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/docs/PetApi.md
@@ -464,7 +464,7 @@ null (empty response body)
 
 <a name="uploadFile"></a>
 # **uploadFile**
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -490,9 +490,9 @@ public class Example {
     PetApi apiInstance = new PetApi(defaultClient);
     Long petId = 56L; // Long | ID of pet to update
     String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-    File file = new File("/path/to/file"); // File | file to upload
+    File _file = new File("/path/to/file"); // File | file to upload
     try {
-      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
       System.out.println(result);
     } catch (ApiException e) {
 
@@ -507,7 +507,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/ApiClient.java
index a5fc2cca5d6..5979da1e895 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/ApiClient.java
@@ -1367,6 +1367,7 @@ public class ApiClient {
      * @param payload HTTP request body
      * @param method HTTP method
      * @param uri URI
+     * @throws org.openapitools.client.ApiException If fails to update the parameters
      */
     public void updateParamsForAuth(String[] authNames, List<Pair> queryParams, Map<String, String> headerParams,
                                     Map<String, String> cookieParams, String payload, String method, URI uri) throws ApiException {
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/JSON.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/JSON.java
index 584a6e970c8..5618d3008d9 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/JSON.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/JSON.java
@@ -258,6 +258,8 @@ public class JSON {
             .registerTypeAdapterFactory(new org.openapitools.client.model.MixedPropertiesAndAdditionalPropertiesClass.CustomTypeAdapterFactory())
             .registerTypeAdapterFactory(new org.openapitools.client.model.Model200Response.CustomTypeAdapterFactory())
             .registerTypeAdapterFactory(new org.openapitools.client.model.ModelApiResponse.CustomTypeAdapterFactory())
+            .registerTypeAdapterFactory(new org.openapitools.client.model.ModelFile.CustomTypeAdapterFactory())
+            .registerTypeAdapterFactory(new org.openapitools.client.model.ModelList.CustomTypeAdapterFactory())
             .registerTypeAdapterFactory(new org.openapitools.client.model.ModelReturn.CustomTypeAdapterFactory())
             .registerTypeAdapterFactory(new org.openapitools.client.model.Name.CustomTypeAdapterFactory())
             .registerTypeAdapterFactory(new org.openapitools.client.model.NullableClass.CustomTypeAdapterFactory())
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
index 9482a5a5f86..52c19920a97 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -91,7 +91,7 @@ public class AnotherFakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/DefaultApi.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/DefaultApi.java
index 70e9788eb14..7741b8200a9 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/DefaultApi.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/DefaultApi.java
@@ -90,7 +90,7 @@ public class DefaultApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeApi.java
index 0e4cf97f1c8..d413cd3e829 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -98,7 +98,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -209,7 +209,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -323,7 +323,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -437,7 +437,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -551,7 +551,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -664,7 +664,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -780,7 +780,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -897,7 +897,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1086,7 +1086,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1292,7 +1292,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1432,7 +1432,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1631,7 +1631,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1749,7 +1749,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1890,7 +1890,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
index 1fac7240705..34c9d282281 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -91,7 +91,7 @@ public class FakeClassnameTags123Api {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/PetApi.java
index c1523ef0790..2357401a1b5 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/PetApi.java
@@ -93,7 +93,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -208,7 +208,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -325,7 +325,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -454,7 +454,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -586,7 +586,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -713,7 +713,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -839,7 +839,7 @@ public class PetApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -922,7 +922,7 @@ public class PetApi {
      * Build call for uploadFile
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback Callback for upload/download progress
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
@@ -932,7 +932,7 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         Object localVarPostBody = null;
 
         // create path and map variables
@@ -949,8 +949,8 @@ public class PetApi {
             localVarFormParams.put("additionalMetadata", additionalMetadata);
         }
 
-        if (file != null) {
-            localVarFormParams.put("file", file);
+        if (_file != null) {
+            localVarFormParams.put("file", _file);
         }
 
         final String[] localVarAccepts = {
@@ -965,7 +965,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -974,7 +974,7 @@ public class PetApi {
     }
 
     @SuppressWarnings("rawtypes")
-    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         
         // verify the required parameter 'petId' is set
         if (petId == null) {
@@ -982,7 +982,7 @@ public class PetApi {
         }
         
 
-        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, _file, _callback);
         return localVarCall;
 
     }
@@ -992,7 +992,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ModelApiResponse
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1001,8 +1001,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, file);
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, _file);
         return localVarResp.getData();
     }
 
@@ -1011,7 +1011,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ApiResponse&lt;ModelApiResponse&gt;
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1020,8 +1020,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, null);
+    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, null);
         try {
             Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
             return localVarApiClient.execute(localVarCall, localVarReturnType);
@@ -1037,7 +1037,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback The callback to be executed when the API call finishes
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -1047,9 +1047,9 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
+    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File _file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
 
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, _callback);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
         return localVarCall;
@@ -1101,7 +1101,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/StoreApi.java
index 5d93e632223..f57a9e3ff70 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -93,7 +93,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -204,7 +204,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -318,7 +318,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -444,7 +444,7 @@ public class StoreApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/UserApi.java
index 56c6433a490..f6d5e33327c 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/api/UserApi.java
@@ -92,7 +92,7 @@ public class UserApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -201,7 +201,7 @@ public class UserApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -310,7 +310,7 @@ public class UserApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -421,7 +421,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -536,7 +536,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -671,7 +671,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -800,7 +800,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -904,7 +904,7 @@ public class UserApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/auth/RetryingOAuth.java b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/auth/RetryingOAuth.java
index a37cbdd5a55..7b630bb57e7 100644
--- a/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/auth/RetryingOAuth.java
+++ b/samples/client/petstore/java/okhttp-gson-nextgen/src/main/java/org/openapitools/client/auth/RetryingOAuth.java
@@ -28,22 +28,31 @@ public class RetryingOAuth extends OAuth implements Interceptor {
 
     private TokenRequestBuilder tokenRequestBuilder;
 
+    /**
+     * @param client An OkHttp client
+     * @param tokenRequestBuilder A token request builder
+     */
     public RetryingOAuth(OkHttpClient client, TokenRequestBuilder tokenRequestBuilder) {
         this.oAuthClient = new OAuthClient(new OAuthOkHttpClient(client));
         this.tokenRequestBuilder = tokenRequestBuilder;
     }
 
+    /**
+     * @param tokenRequestBuilder A token request builder
+     */
     public RetryingOAuth(TokenRequestBuilder tokenRequestBuilder) {
         this(new OkHttpClient(), tokenRequestBuilder);
     }
 
     /**
-    @param tokenUrl The token URL to be used for this OAuth2 flow.
-        Applicable to the following OAuth2 flows: "password", "clientCredentials" and "authorizationCode".
-        The value must be an absolute URL.
-    @param clientId The OAuth2 client ID for the "clientCredentials" flow.
-    @param clientSecret The OAuth2 client secret for the "clientCredentials" flow.
-    */
+     * @param tokenUrl The token URL to be used for this OAuth2 flow.
+     *   Applicable to the following OAuth2 flows: "password", "clientCredentials" and "authorizationCode".
+     *   The value must be an absolute URL.
+     * @param clientId The OAuth2 client ID for the "clientCredentials" flow.
+     * @param flow OAuth flow.
+     * @param clientSecret The OAuth2 client secret for the "clientCredentials" flow.
+     * @param parameters A map of string.
+     */
     public RetryingOAuth(
             String tokenUrl,
             String clientId,
@@ -62,6 +71,11 @@ public class RetryingOAuth extends OAuth implements Interceptor {
         }
     }
 
+    /**
+     * Set the OAuth flow
+     *
+     * @param flow The OAuth flow.
+     */
     public void setFlow(OAuthFlow flow) {
         switch(flow) {
             case ACCESS_CODE:
@@ -147,8 +161,12 @@ public class RetryingOAuth extends OAuth implements Interceptor {
         }
     }
 
-    /*
+    /**
      * Returns true if the access token has been updated
+     *
+     * @param requestAccessToken the request access token
+     * @return True if the update is successful
+     * @throws java.io.IOException If fail to update the access token
      */
     public synchronized boolean updateAccessToken(String requestAccessToken) throws IOException {
         if (getAccessToken() == null || getAccessToken().equals(requestAccessToken)) {
@@ -165,10 +183,21 @@ public class RetryingOAuth extends OAuth implements Interceptor {
         return getAccessToken() == null || !getAccessToken().equals(requestAccessToken);
     }
 
+    /**
+     * Gets the token request builder
+     *
+     * @return A token request builder
+     * @throws java.io.IOException If fail to update the access token
+     */
     public TokenRequestBuilder getTokenRequestBuilder() {
         return tokenRequestBuilder;
     }
 
+    /**
+     * Sets the token request builder
+     *
+     * @param tokenRequestBuilder Token request builder
+     */
     public void setTokenRequestBuilder(TokenRequestBuilder tokenRequestBuilder) {
         this.tokenRequestBuilder = tokenRequestBuilder;
     }
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/.openapi-generator/FILES b/samples/client/petstore/java/okhttp-gson-parcelableModel/.openapi-generator/FILES
index 3cd17323715..67db66f2582 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/.openapi-generator/FILES
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -124,6 +126,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/README.md b/samples/client/petstore/java/okhttp-gson-parcelableModel/README.md
index 40458ad8a74..4f583d48ab4 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/README.md
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/FileSchemaTestClass.md b/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/FileSchemaTestClass.md
index 25db1df010f..799691cc83d 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 ## Implemented Interfaces
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/PetApi.md b/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/PetApi.md
index 8d927130cee..d1aa160676c 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/PetApi.md
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/docs/PetApi.md
@@ -491,7 +491,7 @@ null (empty response body)
 
 <a name="uploadFile"></a>
 # **uploadFile**
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -517,9 +517,9 @@ public class Example {
     PetApi apiInstance = new PetApi(defaultClient);
     Long petId = 56L; // Long | ID of pet to update
     String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-    File file = new File("/path/to/file"); // File | file to upload
+    File _file = new File("/path/to/file"); // File | file to upload
     try {
-      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
       System.out.println(result);
     } catch (ApiException e) {
       System.err.println("Exception when calling PetApi#uploadFile");
@@ -538,7 +538,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
index af9e915240d..5789ec8083b 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -122,7 +122,7 @@ public class AnotherFakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeApi.java
index b27961d1479..450dbb1a5b7 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -130,7 +130,7 @@ public class FakeApi {
             "application/xml", "application/xml; charset=utf-8", "application/xml; charset=utf-16", "text/xml", "text/xml; charset=utf-8", "text/xml; charset=utf-16"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -253,7 +253,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -375,7 +375,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -497,7 +497,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -619,7 +619,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -741,7 +741,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -869,7 +869,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1000,7 +1000,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1197,7 +1197,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1417,7 +1417,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1571,7 +1571,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1784,7 +1784,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1916,7 +1916,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -2071,7 +2071,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
index d6bac0d84af..e9e0d6cb8c9 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -122,7 +122,7 @@ public class FakeClassnameTags123Api {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/PetApi.java
index 2f90b4257f9..f3f8e2d557c 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/PetApi.java
@@ -126,7 +126,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -259,7 +259,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -393,7 +393,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -530,7 +530,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -670,7 +670,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -806,7 +806,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -949,7 +949,7 @@ public class PetApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1032,7 +1032,7 @@ public class PetApi {
      * Build call for uploadFile
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback Callback for upload/download progress
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
@@ -1042,7 +1042,7 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         String basePath = null;
 
         // Operation Servers
@@ -1073,8 +1073,8 @@ public class PetApi {
             localVarFormParams.put("additionalMetadata", additionalMetadata);
         }
 
-        if (file != null) {
-            localVarFormParams.put("file", file);
+        if (_file != null) {
+            localVarFormParams.put("file", _file);
         }
 
         final String[] localVarAccepts = {
@@ -1089,7 +1089,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1098,7 +1098,7 @@ public class PetApi {
     }
 
     @SuppressWarnings("rawtypes")
-    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         
         // verify the required parameter 'petId' is set
         if (petId == null) {
@@ -1106,7 +1106,7 @@ public class PetApi {
         }
         
 
-        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, _file, _callback);
         return localVarCall;
 
     }
@@ -1116,7 +1116,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ModelApiResponse
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1125,8 +1125,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, file);
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, _file);
         return localVarResp.getData();
     }
 
@@ -1135,7 +1135,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ApiResponse&lt;ModelApiResponse&gt;
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1144,8 +1144,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, null);
+    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, null);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         return localVarApiClient.execute(localVarCall, localVarReturnType);
     }
@@ -1155,7 +1155,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback The callback to be executed when the API call finishes
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -1165,9 +1165,9 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
+    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File _file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
 
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, _callback);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
         return localVarCall;
@@ -1233,7 +1233,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/StoreApi.java
index 9aeea0062d0..e17f7df6c48 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -124,7 +124,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -249,7 +249,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -371,7 +371,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -505,7 +505,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/UserApi.java
index abf14e6dba3..627f7880487 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/api/UserApi.java
@@ -123,7 +123,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -246,7 +246,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -369,7 +369,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -494,7 +494,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -623,7 +623,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -766,7 +766,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -903,7 +903,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1021,7 +1021,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index e8334615caf..d57efa9262d 100644
--- a/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/okhttp-gson-parcelableModel/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import android.os.Parcelable;
 import android.os.Parcel;
 
@@ -35,47 +36,47 @@ import android.os.Parcel;
 public class FileSchemaTestClass implements Parcelable {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -88,12 +89,12 @@ public class FileSchemaTestClass implements Parcelable {
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -107,20 +108,20 @@ public class FileSchemaTestClass implements Parcelable {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
@@ -139,13 +140,13 @@ public class FileSchemaTestClass implements Parcelable {
 
 
   public void writeToParcel(Parcel out, int flags) {
-    out.writeValue(file);
+    out.writeValue(_file);
     out.writeValue(files);
   }
 
   FileSchemaTestClass(Parcel in) {
-    file = (java.io.File)in.readValue(java.io.File.class.getClassLoader());
-    files = (List<java.io.File>)in.readValue(java.io.File.class.getClassLoader());
+    _file = (ModelFile)in.readValue(ModelFile.class.getClassLoader());
+    files = (List<ModelFile>)in.readValue(ModelFile.class.getClassLoader());
   }
 
   public int describeContents() {
diff --git a/samples/client/petstore/java/okhttp-gson/.openapi-generator/FILES b/samples/client/petstore/java/okhttp-gson/.openapi-generator/FILES
index 3cd17323715..67db66f2582 100644
--- a/samples/client/petstore/java/okhttp-gson/.openapi-generator/FILES
+++ b/samples/client/petstore/java/okhttp-gson/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -124,6 +126,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/okhttp-gson/README.md b/samples/client/petstore/java/okhttp-gson/README.md
index 8a02b7818b8..6539220a83c 100644
--- a/samples/client/petstore/java/okhttp-gson/README.md
+++ b/samples/client/petstore/java/okhttp-gson/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/okhttp-gson/docs/FileSchemaTestClass.md b/samples/client/petstore/java/okhttp-gson/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/okhttp-gson/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/okhttp-gson/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/okhttp-gson/docs/PetApi.md b/samples/client/petstore/java/okhttp-gson/docs/PetApi.md
index 8d927130cee..d1aa160676c 100644
--- a/samples/client/petstore/java/okhttp-gson/docs/PetApi.md
+++ b/samples/client/petstore/java/okhttp-gson/docs/PetApi.md
@@ -491,7 +491,7 @@ null (empty response body)
 
 <a name="uploadFile"></a>
 # **uploadFile**
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -517,9 +517,9 @@ public class Example {
     PetApi apiInstance = new PetApi(defaultClient);
     Long petId = 56L; // Long | ID of pet to update
     String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-    File file = new File("/path/to/file"); // File | file to upload
+    File _file = new File("/path/to/file"); // File | file to upload
     try {
-      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+      ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
       System.out.println(result);
     } catch (ApiException e) {
       System.err.println("Exception when calling PetApi#uploadFile");
@@ -538,7 +538,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
index af9e915240d..5789ec8083b 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -122,7 +122,7 @@ public class AnotherFakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java
index b27961d1479..450dbb1a5b7 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -130,7 +130,7 @@ public class FakeApi {
             "application/xml", "application/xml; charset=utf-8", "application/xml; charset=utf-16", "text/xml", "text/xml; charset=utf-8", "text/xml; charset=utf-16"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -253,7 +253,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -375,7 +375,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -497,7 +497,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -619,7 +619,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -741,7 +741,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -869,7 +869,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1000,7 +1000,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1197,7 +1197,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1417,7 +1417,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1571,7 +1571,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1784,7 +1784,7 @@ public class FakeApi {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1916,7 +1916,7 @@ public class FakeApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -2071,7 +2071,7 @@ public class FakeApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
index d6bac0d84af..e9e0d6cb8c9 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -122,7 +122,7 @@ public class FakeClassnameTags123Api {
             "application/json"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/PetApi.java
index 2f90b4257f9..f3f8e2d557c 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/PetApi.java
@@ -126,7 +126,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -259,7 +259,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -393,7 +393,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -530,7 +530,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -670,7 +670,7 @@ public class PetApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -806,7 +806,7 @@ public class PetApi {
             "application/json", "application/xml"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -949,7 +949,7 @@ public class PetApi {
             "application/x-www-form-urlencoded"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1032,7 +1032,7 @@ public class PetApi {
      * Build call for uploadFile
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback Callback for upload/download progress
      * @return Call to execute
      * @throws ApiException If fail to serialize the request body object
@@ -1042,7 +1042,7 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    public okhttp3.Call uploadFileCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         String basePath = null;
 
         // Operation Servers
@@ -1073,8 +1073,8 @@ public class PetApi {
             localVarFormParams.put("additionalMetadata", additionalMetadata);
         }
 
-        if (file != null) {
-            localVarFormParams.put("file", file);
+        if (_file != null) {
+            localVarFormParams.put("file", _file);
         }
 
         final String[] localVarAccepts = {
@@ -1089,7 +1089,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1098,7 +1098,7 @@ public class PetApi {
     }
 
     @SuppressWarnings("rawtypes")
-    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File file, final ApiCallback _callback) throws ApiException {
+    private okhttp3.Call uploadFileValidateBeforeCall(Long petId, String additionalMetadata, File _file, final ApiCallback _callback) throws ApiException {
         
         // verify the required parameter 'petId' is set
         if (petId == null) {
@@ -1106,7 +1106,7 @@ public class PetApi {
         }
         
 
-        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileCall(petId, additionalMetadata, _file, _callback);
         return localVarCall;
 
     }
@@ -1116,7 +1116,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ModelApiResponse
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1125,8 +1125,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, file);
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+        ApiResponse<ModelApiResponse> localVarResp = uploadFileWithHttpInfo(petId, additionalMetadata, _file);
         return localVarResp.getData();
     }
 
@@ -1135,7 +1135,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ApiResponse&lt;ModelApiResponse&gt;
      * @throws ApiException If fail to call the API, e.g. server error or cannot deserialize the response body
      * @http.response.details
@@ -1144,8 +1144,8 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, null);
+    public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, null);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         return localVarApiClient.execute(localVarCall, localVarReturnType);
     }
@@ -1155,7 +1155,7 @@ public class PetApi {
      * 
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @param _callback The callback to be executed when the API call finishes
      * @return The request call
      * @throws ApiException If fail to process the API call, e.g. serializing the request body object
@@ -1165,9 +1165,9 @@ public class PetApi {
         <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
      */
-    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
+    public okhttp3.Call uploadFileAsync(Long petId, String additionalMetadata, File _file, final ApiCallback<ModelApiResponse> _callback) throws ApiException {
 
-        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, file, _callback);
+        okhttp3.Call localVarCall = uploadFileValidateBeforeCall(petId, additionalMetadata, _file, _callback);
         Type localVarReturnType = new TypeToken<ModelApiResponse>(){}.getType();
         localVarApiClient.executeAsync(localVarCall, localVarReturnType, _callback);
         return localVarCall;
@@ -1233,7 +1233,7 @@ public class PetApi {
             "multipart/form-data"
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/StoreApi.java
index 9aeea0062d0..e17f7df6c48 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -124,7 +124,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -249,7 +249,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -371,7 +371,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -505,7 +505,7 @@ public class StoreApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/UserApi.java
index abf14e6dba3..627f7880487 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/api/UserApi.java
@@ -123,7 +123,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -246,7 +246,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -369,7 +369,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -494,7 +494,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -623,7 +623,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -766,7 +766,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -903,7 +903,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
@@ -1021,7 +1021,7 @@ public class UserApi {
             
         };
         final String localVarContentType = localVarApiClient.selectHeaderContentType(localVarContentTypes);
-        if (localVarHeaderParams != null && localVarContentTypes != null) {
+        if (localVarContentType != null) {
             localVarHeaderParams.put("Content-Type", localVarContentType);
         }
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index d3feb88b1a9..4c0ebf716d9 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 
 /**
  * FileSchemaTestClass
@@ -33,47 +34,47 @@ import java.util.List;
 public class FileSchemaTestClass {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -86,12 +87,12 @@ public class FileSchemaTestClass {
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -105,20 +106,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/rest-assured-jackson/.openapi-generator/FILES b/samples/client/petstore/java/rest-assured-jackson/.openapi-generator/FILES
index 5f08ec35a28..fdaf5d99302 100644
--- a/samples/client/petstore/java/rest-assured-jackson/.openapi-generator/FILES
+++ b/samples/client/petstore/java/rest-assured-jackson/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -111,6 +113,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/rest-assured-jackson/docs/FileSchemaTestClass.md b/samples/client/petstore/java/rest-assured-jackson/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/rest-assured-jackson/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/rest-assured-jackson/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/rest-assured-jackson/docs/PetApi.md b/samples/client/petstore/java/rest-assured-jackson/docs/PetApi.md
index d72a09eac31..ea946e82b73 100644
--- a/samples/client/petstore/java/rest-assured-jackson/docs/PetApi.md
+++ b/samples/client/petstore/java/rest-assured-jackson/docs/PetApi.md
@@ -306,7 +306,7 @@ null (empty response body)
 
 <a name="uploadFile"></a>
 # **uploadFile**
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -331,7 +331,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/api/PetApi.java
index fb3e63b07c9..87691244a91 100644
--- a/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/api/PetApi.java
@@ -693,7 +693,7 @@ public class PetApi {
      *
      * @see #petIdPath ID of pet to update (required)
      * @see #additionalMetadataForm Additional data to pass to server (optional)
-     * @see #fileMultiPart file to upload (optional)
+     * @see #_fileMultiPart file to upload (optional)
      * return ModelApiResponse
      */
     public static class UploadFileOper implements Oper {
@@ -757,11 +757,11 @@ public class PetApi {
          /**
          * It will assume that the control name is file and the &lt;content-type&gt; is &lt;application/octet-stream&gt;
          * @see #reqSpec for customise
-         * @param file (File) file to upload (optional)
+         * @param _file (File) file to upload (optional)
          * @return operation
          */
-         public UploadFileOper fileMultiPart(File file) {
-            reqSpec.addMultiPart(file);
+         public UploadFileOper _fileMultiPart(File _file) {
+            reqSpec.addMultiPart(_file);
             return this;
          }
 
diff --git a/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 682f4f7ab6f..9aa13f2db0f 100644
--- a/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/rest-assured-jackson/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import javax.validation.constraints.*;
@@ -41,23 +42,23 @@ import org.hibernate.validator.constraints.*;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @Valid
@@ -65,25 +66,25 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -101,14 +102,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -122,20 +123,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/rest-assured/.openapi-generator/FILES b/samples/client/petstore/java/rest-assured/.openapi-generator/FILES
index 05f54dd3926..7aca148823e 100644
--- a/samples/client/petstore/java/rest-assured/.openapi-generator/FILES
+++ b/samples/client/petstore/java/rest-assured/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -111,6 +113,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/rest-assured/docs/FileSchemaTestClass.md b/samples/client/petstore/java/rest-assured/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/rest-assured/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/rest-assured/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/rest-assured/docs/PetApi.md b/samples/client/petstore/java/rest-assured/docs/PetApi.md
index d72a09eac31..ea946e82b73 100644
--- a/samples/client/petstore/java/rest-assured/docs/PetApi.md
+++ b/samples/client/petstore/java/rest-assured/docs/PetApi.md
@@ -306,7 +306,7 @@ null (empty response body)
 
 <a name="uploadFile"></a>
 # **uploadFile**
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -331,7 +331,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/api/PetApi.java
index 600310a6f92..9d1db466a23 100644
--- a/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/api/PetApi.java
@@ -694,7 +694,7 @@ public class PetApi {
      *
      * @see #petIdPath ID of pet to update (required)
      * @see #additionalMetadataForm Additional data to pass to server (optional)
-     * @see #fileMultiPart file to upload (optional)
+     * @see #_fileMultiPart file to upload (optional)
      * return ModelApiResponse
      */
     public static class UploadFileOper implements Oper {
@@ -758,11 +758,11 @@ public class PetApi {
          /**
          * It will assume that the control name is file and the &lt;content-type&gt; is &lt;application/octet-stream&gt;
          * @see #reqSpec for customise
-         * @param file (File) file to upload (optional)
+         * @param _file (File) file to upload (optional)
          * @return operation
          */
-         public UploadFileOper fileMultiPart(File file) {
-            reqSpec.addMultiPart(file);
+         public UploadFileOper _fileMultiPart(File _file) {
+            reqSpec.addMultiPart(_file);
             return this;
          }
 
diff --git a/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index f64317ec16a..34a9959b84f 100644
--- a/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/rest-assured/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import org.hibernate.validator.constraints.*;
@@ -36,48 +37,48 @@ import org.hibernate.validator.constraints.*;
 public class FileSchemaTestClass {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @Valid
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -91,12 +92,12 @@ public class FileSchemaTestClass {
   @Valid
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -110,20 +111,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/resteasy/.openapi-generator/FILES b/samples/client/petstore/java/resteasy/.openapi-generator/FILES
index 1b72f2129a0..a0828809b3d 100644
--- a/samples/client/petstore/java/resteasy/.openapi-generator/FILES
+++ b/samples/client/petstore/java/resteasy/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -120,6 +122,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/resteasy/README.md b/samples/client/petstore/java/resteasy/README.md
index 0c870fbabb3..18680ec4a79 100644
--- a/samples/client/petstore/java/resteasy/README.md
+++ b/samples/client/petstore/java/resteasy/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/resteasy/docs/FileSchemaTestClass.md b/samples/client/petstore/java/resteasy/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/resteasy/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/resteasy/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/resteasy/docs/PetApi.md b/samples/client/petstore/java/resteasy/docs/PetApi.md
index 798a210c145..acc142fa022 100644
--- a/samples/client/petstore/java/resteasy/docs/PetApi.md
+++ b/samples/client/petstore/java/resteasy/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/api/PetApi.java
index 841806758c0..c0174d8f38a 100644
--- a/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/api/PetApi.java
@@ -355,11 +355,11 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return a {@code ModelApiResponse}
    * @throws ApiException if fails to make API call
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
     Object localVarPostBody = null;
     
     // verify the required parameter 'petId' is set
@@ -382,8 +382,8 @@ if (status != null)
     
     if (additionalMetadata != null)
       localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null)
-      localVarFormParams.put("file", file);
+if (_file != null)
+      localVarFormParams.put("file", _file);
 
     final String[] localVarAccepts = {
       "application/json"
diff --git a/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 3aa79df4ac5..78045f685e8 100644
--- a/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/resteasy/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,48 +39,48 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/resttemplate-withXml/.openapi-generator/FILES b/samples/client/petstore/java/resttemplate-withXml/.openapi-generator/FILES
index 3cc2d725e51..457cfb54d18 100644
--- a/samples/client/petstore/java/resttemplate-withXml/.openapi-generator/FILES
+++ b/samples/client/petstore/java/resttemplate-withXml/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -115,6 +117,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/resttemplate-withXml/README.md b/samples/client/petstore/java/resttemplate-withXml/README.md
index 8fdc6181a98..c002d39b0de 100644
--- a/samples/client/petstore/java/resttemplate-withXml/README.md
+++ b/samples/client/petstore/java/resttemplate-withXml/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/resttemplate-withXml/docs/FileSchemaTestClass.md b/samples/client/petstore/java/resttemplate-withXml/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/resttemplate-withXml/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/resttemplate-withXml/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/resttemplate-withXml/docs/PetApi.md b/samples/client/petstore/java/resttemplate-withXml/docs/PetApi.md
index 798a210c145..acc142fa022 100644
--- a/samples/client/petstore/java/resttemplate-withXml/docs/PetApi.md
+++ b/samples/client/petstore/java/resttemplate-withXml/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/api/PetApi.java
index c139c41aa83..00ad400d64b 100644
--- a/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/api/PetApi.java
@@ -421,12 +421,12 @@ public class PetApi {
      * <p><b>200</b> - successful operation
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ModelApiResponse
      * @throws RestClientException if an error occurs while attempting to invoke the API
      */
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws RestClientException {
-        return uploadFileWithHttpInfo(petId, additionalMetadata, file).getBody();
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws RestClientException {
+        return uploadFileWithHttpInfo(petId, additionalMetadata, _file).getBody();
     }
 
     /**
@@ -435,11 +435,11 @@ public class PetApi {
      * <p><b>200</b> - successful operation
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ResponseEntity&lt;ModelApiResponse&gt;
      * @throws RestClientException if an error occurs while attempting to invoke the API
      */
-    public ResponseEntity<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws RestClientException {
+    public ResponseEntity<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws RestClientException {
         Object postBody = null;
         
         // verify the required parameter 'petId' is set
@@ -458,8 +458,8 @@ public class PetApi {
 
         if (additionalMetadata != null)
             formParams.add("additionalMetadata", additionalMetadata);
-        if (file != null)
-            formParams.add("file", new FileSystemResource(file));
+        if (_file != null)
+            formParams.add("file", new FileSystemResource(_file));
 
         final String[] localVarAccepts = { 
             "application/json"
diff --git a/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 75e1bf068b2..4d8a8cdb4a8 100644
--- a/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import com.fasterxml.jackson.dataformat.xml.annotation.*;
@@ -44,27 +45,27 @@ import javax.xml.bind.annotation.*;
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
   @XmlElement(name = "file")
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   // Is a container wrapped=false
   // items.name=files items.baseName=files items.xmlName= items.xmlNamespace=
-  // items.example= items.type=java.io.File
+  // items.example= items.type=ModelFile
   @XmlElement(name = "files")
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
@@ -72,26 +73,26 @@ public class FileSchemaTestClass {
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
   @JacksonXmlProperty(localName = "file")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
   @JacksonXmlProperty(localName = "file")
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -108,14 +109,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -129,20 +130,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/resttemplate/.openapi-generator/FILES b/samples/client/petstore/java/resttemplate/.openapi-generator/FILES
index 3cc2d725e51..457cfb54d18 100644
--- a/samples/client/petstore/java/resttemplate/.openapi-generator/FILES
+++ b/samples/client/petstore/java/resttemplate/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -115,6 +117,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/resttemplate/README.md b/samples/client/petstore/java/resttemplate/README.md
index fec37d43ba5..a0f9bd27d14 100644
--- a/samples/client/petstore/java/resttemplate/README.md
+++ b/samples/client/petstore/java/resttemplate/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/resttemplate/docs/FileSchemaTestClass.md b/samples/client/petstore/java/resttemplate/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/resttemplate/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/resttemplate/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/resttemplate/docs/PetApi.md b/samples/client/petstore/java/resttemplate/docs/PetApi.md
index 798a210c145..acc142fa022 100644
--- a/samples/client/petstore/java/resttemplate/docs/PetApi.md
+++ b/samples/client/petstore/java/resttemplate/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/api/PetApi.java
index c139c41aa83..00ad400d64b 100644
--- a/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/api/PetApi.java
@@ -421,12 +421,12 @@ public class PetApi {
      * <p><b>200</b> - successful operation
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ModelApiResponse
      * @throws RestClientException if an error occurs while attempting to invoke the API
      */
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws RestClientException {
-        return uploadFileWithHttpInfo(petId, additionalMetadata, file).getBody();
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws RestClientException {
+        return uploadFileWithHttpInfo(petId, additionalMetadata, _file).getBody();
     }
 
     /**
@@ -435,11 +435,11 @@ public class PetApi {
      * <p><b>200</b> - successful operation
      * @param petId ID of pet to update (required)
      * @param additionalMetadata Additional data to pass to server (optional)
-     * @param file file to upload (optional)
+     * @param _file file to upload (optional)
      * @return ResponseEntity&lt;ModelApiResponse&gt;
      * @throws RestClientException if an error occurs while attempting to invoke the API
      */
-    public ResponseEntity<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws RestClientException {
+    public ResponseEntity<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws RestClientException {
         Object postBody = null;
         
         // verify the required parameter 'petId' is set
@@ -458,8 +458,8 @@ public class PetApi {
 
         if (additionalMetadata != null)
             formParams.add("additionalMetadata", additionalMetadata);
-        if (file != null)
-            formParams.add("file", new FileSystemResource(file));
+        if (_file != null)
+            formParams.add("file", new FileSystemResource(_file));
 
         final String[] localVarAccepts = { 
             "application/json"
diff --git a/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 3aa79df4ac5..78045f685e8 100644
--- a/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/resttemplate/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,48 +39,48 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/retrofit2-play26/.openapi-generator/FILES b/samples/client/petstore/java/retrofit2-play26/.openapi-generator/FILES
index f9e53f21c7f..7dee55296a7 100644
--- a/samples/client/petstore/java/retrofit2-play26/.openapi-generator/FILES
+++ b/samples/client/petstore/java/retrofit2-play26/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -115,6 +117,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/retrofit2-play26/docs/FileSchemaTestClass.md b/samples/client/petstore/java/retrofit2-play26/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/retrofit2-play26/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/retrofit2-play26/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/retrofit2-play26/docs/PetApi.md b/samples/client/petstore/java/retrofit2-play26/docs/PetApi.md
index c7caacc6ef6..fb13fad3e05 100644
--- a/samples/client/petstore/java/retrofit2-play26/docs/PetApi.md
+++ b/samples/client/petstore/java/retrofit2-play26/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/AnotherFakeApi.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
index b638ac67690..4a546e53849 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
@@ -2,8 +2,6 @@ package org.openapitools.client.api;
 
 import org.openapitools.client.CollectionFormats.*;
 
-
-
 import retrofit2.Call;
 import retrofit2.http.*;
 
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeApi.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeApi.java
index 29c894d5661..e87dcd696da 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeApi.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeApi.java
@@ -2,8 +2,6 @@ package org.openapitools.client.api;
 
 import org.openapitools.client.CollectionFormats.*;
 
-
-
 import retrofit2.Call;
 import retrofit2.http.*;
 
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
index e4f16e34fd7..af53baad6ab 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/FakeClassnameTags123Api.java
@@ -2,8 +2,6 @@ package org.openapitools.client.api;
 
 import org.openapitools.client.CollectionFormats.*;
 
-
-
 import retrofit2.Call;
 import retrofit2.http.*;
 
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/PetApi.java
index 8a4fbfd869e..ecc66db936a 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/PetApi.java
@@ -2,8 +2,6 @@ package org.openapitools.client.api;
 
 import org.openapitools.client.CollectionFormats.*;
 
-
-
 import retrofit2.Call;
 import retrofit2.http.*;
 
@@ -119,13 +117,13 @@ public interface PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return Call&lt;ModelApiResponse&gt;
    */
   @retrofit2.http.Multipart
   @POST("pet/{petId}/uploadImage")
   CompletionStage<Response<ModelApiResponse>> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part _file
   );
 
   /**
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/StoreApi.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/StoreApi.java
index 798245fd983..b9ccc8cff46 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/StoreApi.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/StoreApi.java
@@ -2,8 +2,6 @@ package org.openapitools.client.api;
 
 import org.openapitools.client.CollectionFormats.*;
 
-
-
 import retrofit2.Call;
 import retrofit2.http.*;
 
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/UserApi.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/UserApi.java
index c568e477b92..2aed903655b 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/UserApi.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/api/UserApi.java
@@ -2,8 +2,6 @@ package org.openapitools.client.api;
 
 import org.openapitools.client.CollectionFormats.*;
 
-
-
 import retrofit2.Call;
 import retrofit2.http.*;
 
diff --git a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 4bcc644244e..88802be1f2f 100644
--- a/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/retrofit2-play26/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 import javax.validation.constraints.*;
@@ -40,23 +41,23 @@ import javax.validation.Valid;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @Valid
@@ -64,25 +65,25 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -100,14 +101,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -121,20 +122,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/retrofit2/.openapi-generator/FILES b/samples/client/petstore/java/retrofit2/.openapi-generator/FILES
index 27ea75ae653..4c09d573d49 100644
--- a/samples/client/petstore/java/retrofit2/.openapi-generator/FILES
+++ b/samples/client/petstore/java/retrofit2/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -115,6 +117,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/retrofit2/docs/FileSchemaTestClass.md b/samples/client/petstore/java/retrofit2/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/retrofit2/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/retrofit2/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/retrofit2/docs/PetApi.md b/samples/client/petstore/java/retrofit2/docs/PetApi.md
index c7caacc6ef6..fb13fad3e05 100644
--- a/samples/client/petstore/java/retrofit2/docs/PetApi.md
+++ b/samples/client/petstore/java/retrofit2/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/api/PetApi.java
index 93738971155..72876069be2 100644
--- a/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/api/PetApi.java
@@ -114,13 +114,13 @@ public interface PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return Call&lt;ModelApiResponse&gt;
    */
   @retrofit2.http.Multipart
   @POST("pet/{petId}/uploadImage")
   Call<ModelApiResponse> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part _file
   );
 
   /**
diff --git a/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index d3feb88b1a9..4c0ebf716d9 100644
--- a/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/retrofit2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 
 /**
  * FileSchemaTestClass
@@ -33,47 +34,47 @@ import java.util.List;
 public class FileSchemaTestClass {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -86,12 +87,12 @@ public class FileSchemaTestClass {
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -105,20 +106,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/retrofit2rx2/.openapi-generator/FILES b/samples/client/petstore/java/retrofit2rx2/.openapi-generator/FILES
index 27ea75ae653..4c09d573d49 100644
--- a/samples/client/petstore/java/retrofit2rx2/.openapi-generator/FILES
+++ b/samples/client/petstore/java/retrofit2rx2/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -115,6 +117,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/retrofit2rx2/docs/FileSchemaTestClass.md b/samples/client/petstore/java/retrofit2rx2/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/retrofit2rx2/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/retrofit2rx2/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/retrofit2rx2/docs/PetApi.md b/samples/client/petstore/java/retrofit2rx2/docs/PetApi.md
index c7caacc6ef6..fb13fad3e05 100644
--- a/samples/client/petstore/java/retrofit2rx2/docs/PetApi.md
+++ b/samples/client/petstore/java/retrofit2rx2/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/api/PetApi.java
index bffcdb107c5..ab57b951c23 100644
--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/api/PetApi.java
@@ -115,13 +115,13 @@ public interface PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return Observable&lt;ModelApiResponse&gt;
    */
   @retrofit2.http.Multipart
   @POST("pet/{petId}/uploadImage")
   Observable<ModelApiResponse> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part _file
   );
 
   /**
diff --git a/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index d3feb88b1a9..4c0ebf716d9 100644
--- a/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/retrofit2rx2/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 
 /**
  * FileSchemaTestClass
@@ -33,47 +34,47 @@ import java.util.List;
 public class FileSchemaTestClass {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -86,12 +87,12 @@ public class FileSchemaTestClass {
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -105,20 +106,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/retrofit2rx3/.openapi-generator/FILES b/samples/client/petstore/java/retrofit2rx3/.openapi-generator/FILES
index 27ea75ae653..4c09d573d49 100644
--- a/samples/client/petstore/java/retrofit2rx3/.openapi-generator/FILES
+++ b/samples/client/petstore/java/retrofit2rx3/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -115,6 +117,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/retrofit2rx3/docs/FileSchemaTestClass.md b/samples/client/petstore/java/retrofit2rx3/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/retrofit2rx3/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/retrofit2rx3/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/retrofit2rx3/docs/PetApi.md b/samples/client/petstore/java/retrofit2rx3/docs/PetApi.md
index c7caacc6ef6..fb13fad3e05 100644
--- a/samples/client/petstore/java/retrofit2rx3/docs/PetApi.md
+++ b/samples/client/petstore/java/retrofit2rx3/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/api/PetApi.java
index 9c3cdc37f7a..348e524baf4 100644
--- a/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/api/PetApi.java
@@ -115,13 +115,13 @@ public interface PetApi {
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return Observable&lt;ModelApiResponse&gt;
    */
   @retrofit2.http.Multipart
   @POST("pet/{petId}/uploadImage")
   Observable<ModelApiResponse> uploadFile(
-    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part file
+    @retrofit2.http.Path("petId") Long petId, @retrofit2.http.Part("additionalMetadata") String additionalMetadata, @retrofit2.http.Part MultipartBody.Part _file
   );
 
   /**
diff --git a/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index d3feb88b1a9..4c0ebf716d9 100644
--- a/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/retrofit2rx3/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -25,6 +25,7 @@ import io.swagger.annotations.ApiModelProperty;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 
 /**
  * FileSchemaTestClass
@@ -33,47 +34,47 @@ import java.util.List;
 public class FileSchemaTestClass {
   public static final String SERIALIZED_NAME_FILE = "file";
   @SerializedName(SERIALIZED_NAME_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String SERIALIZED_NAME_FILES = "files";
   @SerializedName(SERIALIZED_NAME_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -86,12 +87,12 @@ public class FileSchemaTestClass {
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -105,20 +106,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/vertx-no-nullable/.openapi-generator/FILES b/samples/client/petstore/java/vertx-no-nullable/.openapi-generator/FILES
index cf574081315..a1f2be80813 100644
--- a/samples/client/petstore/java/vertx-no-nullable/.openapi-generator/FILES
+++ b/samples/client/petstore/java/vertx-no-nullable/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -131,6 +133,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/vertx-no-nullable/README.md b/samples/client/petstore/java/vertx-no-nullable/README.md
index 34fb7c44be6..723d1fc53ad 100644
--- a/samples/client/petstore/java/vertx-no-nullable/README.md
+++ b/samples/client/petstore/java/vertx-no-nullable/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/vertx-no-nullable/docs/FileSchemaTestClass.md b/samples/client/petstore/java/vertx-no-nullable/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/vertx-no-nullable/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/vertx-no-nullable/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/vertx-no-nullable/docs/PetApi.md b/samples/client/petstore/java/vertx-no-nullable/docs/PetApi.md
index ffb21c7396f..302b642d204 100644
--- a/samples/client/petstore/java/vertx-no-nullable/docs/PetApi.md
+++ b/samples/client/petstore/java/vertx-no-nullable/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        AsyncFile file = new AsyncFile(); // AsyncFile | file to upload
+        AsyncFile _file = new AsyncFile(); // AsyncFile | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **AsyncFile**| file to upload | [optional]
+ **_file** | **AsyncFile**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApi.java
index 9f0e189d372..06e892b60cf 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApi.java
@@ -43,9 +43,9 @@ public interface PetApi {
 
     void updatePetWithForm(Long petId, String name, String status, ApiClient.AuthInfo authInfo, Handler<AsyncResult<Void>> handler);
 
-    void uploadFile(Long petId, String additionalMetadata, AsyncFile file, Handler<AsyncResult<ModelApiResponse>> handler);
+    void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, Handler<AsyncResult<ModelApiResponse>> handler);
 
-    void uploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> handler);
+    void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> handler);
 
     void uploadFileWithRequiredFile(Long petId, AsyncFile requiredFile, String additionalMetadata, Handler<AsyncResult<ModelApiResponse>> handler);
 
diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApiImpl.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApiImpl.java
index b9c8a9034c4..b85543cd6c2 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApiImpl.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/PetApiImpl.java
@@ -396,11 +396,11 @@ if (status != null) localVarFormParams.put("status", status);
     * 
         * @param petId ID of pet to update (required)
         * @param additionalMetadata Additional data to pass to server (optional)
-        * @param file file to upload (optional)
+        * @param _file file to upload (optional)
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
-        uploadFile(petId, additionalMetadata, file, null, resultHandler);
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+        uploadFile(petId, additionalMetadata, _file, null, resultHandler);
     }
 
     /**
@@ -408,11 +408,11 @@ if (status != null) localVarFormParams.put("status", status);
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param authInfo per call authentication override.
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
         Object localVarBody = null;
         
         // verify the required parameter 'petId' is set
@@ -437,7 +437,7 @@ if (status != null) localVarFormParams.put("status", status);
         // TODO: sending files within multipart/form-data is not supported yet (because of vertx web-client)
         Map<String, Object> localVarFormParams = new HashMap<>();
         if (additionalMetadata != null) localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null) localVarFormParams.put("file", file);
+if (_file != null) localVarFormParams.put("file", _file);
 
         String[] localVarAccepts = { "application/json" };
         String[] localVarContentTypes = { "multipart/form-data" };
diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/rxjava/PetApi.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
index ceeec174484..ea60428a4df 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
@@ -357,11 +357,11 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
-        delegate.uploadFile(petId, additionalMetadata, file, resultHandler);
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+        delegate.uploadFile(petId, additionalMetadata, _file, resultHandler);
     }
 
     /**
@@ -369,12 +369,12 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param authInfo call specific auth overrides
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
-        delegate.uploadFile(petId, additionalMetadata, file, authInfo, resultHandler);
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+        delegate.uploadFile(petId, additionalMetadata, _file, authInfo, resultHandler);
     }
 
     /**
@@ -382,12 +382,12 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @return Asynchronous result handler (RxJava Single)
     */
-    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile file) {
+    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile _file) {
         return Single.create(new io.vertx.rx.java.SingleOnSubscribeAdapter<>(fut ->
-            delegate.uploadFile(petId, additionalMetadata, file, fut)
+            delegate.uploadFile(petId, additionalMetadata, _file, fut)
         ));
     }
 
@@ -396,13 +396,13 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param authInfo call specific auth overrides
     * @return Asynchronous result handler (RxJava Single)
     */
-    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo) {
+    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo) {
         return Single.create(new io.vertx.rx.java.SingleOnSubscribeAdapter<>(fut ->
-            delegate.uploadFile(petId, additionalMetadata, file, authInfo, fut)
+            delegate.uploadFile(petId, additionalMetadata, _file, authInfo, fut)
         ));
     }
     /**
diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 3aa79df4ac5..78045f685e8 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,48 +39,48 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/vertx/.openapi-generator/FILES b/samples/client/petstore/java/vertx/.openapi-generator/FILES
index 5e33964f3a9..71b0a60e280 100644
--- a/samples/client/petstore/java/vertx/.openapi-generator/FILES
+++ b/samples/client/petstore/java/vertx/.openapi-generator/FILES
@@ -39,6 +39,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NumberOnly.md
@@ -130,6 +132,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NumberOnly.java
diff --git a/samples/client/petstore/java/vertx/README.md b/samples/client/petstore/java/vertx/README.md
index a463020f75b..458bde9cb7d 100644
--- a/samples/client/petstore/java/vertx/README.md
+++ b/samples/client/petstore/java/vertx/README.md
@@ -186,6 +186,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NumberOnly](docs/NumberOnly.md)
diff --git a/samples/client/petstore/java/vertx/docs/FileSchemaTestClass.md b/samples/client/petstore/java/vertx/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/vertx/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/vertx/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/vertx/docs/PetApi.md b/samples/client/petstore/java/vertx/docs/PetApi.md
index ffb21c7396f..302b642d204 100644
--- a/samples/client/petstore/java/vertx/docs/PetApi.md
+++ b/samples/client/petstore/java/vertx/docs/PetApi.md
@@ -520,7 +520,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -547,9 +547,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        AsyncFile file = new AsyncFile(); // AsyncFile | file to upload
+        AsyncFile _file = new AsyncFile(); // AsyncFile | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -569,7 +569,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **AsyncFile**| file to upload | [optional]
+ **_file** | **AsyncFile**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApi.java
index 9f0e189d372..06e892b60cf 100644
--- a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApi.java
@@ -43,9 +43,9 @@ public interface PetApi {
 
     void updatePetWithForm(Long petId, String name, String status, ApiClient.AuthInfo authInfo, Handler<AsyncResult<Void>> handler);
 
-    void uploadFile(Long petId, String additionalMetadata, AsyncFile file, Handler<AsyncResult<ModelApiResponse>> handler);
+    void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, Handler<AsyncResult<ModelApiResponse>> handler);
 
-    void uploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> handler);
+    void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> handler);
 
     void uploadFileWithRequiredFile(Long petId, AsyncFile requiredFile, String additionalMetadata, Handler<AsyncResult<ModelApiResponse>> handler);
 
diff --git a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApiImpl.java b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApiImpl.java
index b9c8a9034c4..b85543cd6c2 100644
--- a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApiImpl.java
+++ b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/PetApiImpl.java
@@ -396,11 +396,11 @@ if (status != null) localVarFormParams.put("status", status);
     * 
         * @param petId ID of pet to update (required)
         * @param additionalMetadata Additional data to pass to server (optional)
-        * @param file file to upload (optional)
+        * @param _file file to upload (optional)
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
-        uploadFile(petId, additionalMetadata, file, null, resultHandler);
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+        uploadFile(petId, additionalMetadata, _file, null, resultHandler);
     }
 
     /**
@@ -408,11 +408,11 @@ if (status != null) localVarFormParams.put("status", status);
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param authInfo per call authentication override.
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
         Object localVarBody = null;
         
         // verify the required parameter 'petId' is set
@@ -437,7 +437,7 @@ if (status != null) localVarFormParams.put("status", status);
         // TODO: sending files within multipart/form-data is not supported yet (because of vertx web-client)
         Map<String, Object> localVarFormParams = new HashMap<>();
         if (additionalMetadata != null) localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null) localVarFormParams.put("file", file);
+if (_file != null) localVarFormParams.put("file", _file);
 
         String[] localVarAccepts = { "application/json" };
         String[] localVarContentTypes = { "multipart/form-data" };
diff --git a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/PetApi.java b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
index ceeec174484..ea60428a4df 100644
--- a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
+++ b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/api/rxjava/PetApi.java
@@ -357,11 +357,11 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
-        delegate.uploadFile(petId, additionalMetadata, file, resultHandler);
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+        delegate.uploadFile(petId, additionalMetadata, _file, resultHandler);
     }
 
     /**
@@ -369,12 +369,12 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param authInfo call specific auth overrides
     * @param resultHandler Asynchronous result handler
     */
-    public void uploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
-        delegate.uploadFile(petId, additionalMetadata, file, authInfo, resultHandler);
+    public void uploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo, Handler<AsyncResult<ModelApiResponse>> resultHandler) {
+        delegate.uploadFile(petId, additionalMetadata, _file, authInfo, resultHandler);
     }
 
     /**
@@ -382,12 +382,12 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @return Asynchronous result handler (RxJava Single)
     */
-    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile file) {
+    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile _file) {
         return Single.create(new io.vertx.rx.java.SingleOnSubscribeAdapter<>(fut ->
-            delegate.uploadFile(petId, additionalMetadata, file, fut)
+            delegate.uploadFile(petId, additionalMetadata, _file, fut)
         ));
     }
 
@@ -396,13 +396,13 @@ public class PetApi {
     * 
     * @param petId ID of pet to update (required)
     * @param additionalMetadata Additional data to pass to server (optional)
-    * @param file file to upload (optional)
+    * @param _file file to upload (optional)
     * @param authInfo call specific auth overrides
     * @return Asynchronous result handler (RxJava Single)
     */
-    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile file, ApiClient.AuthInfo authInfo) {
+    public Single<ModelApiResponse> rxUploadFile(Long petId, String additionalMetadata, AsyncFile _file, ApiClient.AuthInfo authInfo) {
         return Single.create(new io.vertx.rx.java.SingleOnSubscribeAdapter<>(fut ->
-            delegate.uploadFile(petId, additionalMetadata, file, authInfo, fut)
+            delegate.uploadFile(petId, additionalMetadata, _file, authInfo, fut)
         ));
     }
     /**
diff --git a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 3aa79df4ac5..78045f685e8 100644
--- a/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/vertx/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,48 +39,48 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/java/webclient-nulable-arrays/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/webclient-nulable-arrays/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index e8c4b6e227a..a713954ea4b 100644
--- a/samples/client/petstore/java/webclient-nulable-arrays/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/webclient-nulable-arrays/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/webclient/.openapi-generator/FILES b/samples/client/petstore/java/webclient/.openapi-generator/FILES
index 5143a9704df..e0a4c162f50 100644
--- a/samples/client/petstore/java/webclient/.openapi-generator/FILES
+++ b/samples/client/petstore/java/webclient/.openapi-generator/FILES
@@ -35,6 +35,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NullableClass.md
@@ -110,6 +112,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NullableClass.java
diff --git a/samples/client/petstore/java/webclient/README.md b/samples/client/petstore/java/webclient/README.md
index f0b09f82401..1204655c39c 100644
--- a/samples/client/petstore/java/webclient/README.md
+++ b/samples/client/petstore/java/webclient/README.md
@@ -185,6 +185,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NullableClass](docs/NullableClass.md)
diff --git a/samples/client/petstore/java/webclient/docs/FileSchemaTestClass.md b/samples/client/petstore/java/webclient/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/client/petstore/java/webclient/docs/FileSchemaTestClass.md
+++ b/samples/client/petstore/java/webclient/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/client/petstore/java/webclient/docs/PetApi.md b/samples/client/petstore/java/webclient/docs/PetApi.md
index 7e660d3e3c3..513a97c6829 100644
--- a/samples/client/petstore/java/webclient/docs/PetApi.md
+++ b/samples/client/petstore/java/webclient/docs/PetApi.md
@@ -521,7 +521,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -548,9 +548,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -570,7 +570,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java
index 2c41cb36d90..d79756967b0 100644
--- a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/api/PetApi.java
@@ -454,11 +454,11 @@ public class PetApi {
      * <p><b>200</b> - successful operation
      * @param petId ID of pet to update
      * @param additionalMetadata Additional data to pass to server
-     * @param file file to upload
+     * @param _file file to upload
      * @return ModelApiResponse
      * @throws WebClientResponseException if an error occurs while attempting to invoke the API
      */
-    private ResponseSpec uploadFileRequestCreation(Long petId, String additionalMetadata, File file) throws WebClientResponseException {
+    private ResponseSpec uploadFileRequestCreation(Long petId, String additionalMetadata, File _file) throws WebClientResponseException {
         Object postBody = null;
         // verify the required parameter 'petId' is set
         if (petId == null) {
@@ -476,8 +476,8 @@ public class PetApi {
 
         if (additionalMetadata != null)
             formParams.add("additionalMetadata", additionalMetadata);
-        if (file != null)
-            formParams.add("file", new FileSystemResource(file));
+        if (_file != null)
+            formParams.add("file", new FileSystemResource(_file));
 
         final String[] localVarAccepts = { 
             "application/json"
@@ -500,18 +500,18 @@ public class PetApi {
      * <p><b>200</b> - successful operation
      * @param petId ID of pet to update
      * @param additionalMetadata Additional data to pass to server
-     * @param file file to upload
+     * @param _file file to upload
      * @return ModelApiResponse
      * @throws WebClientResponseException if an error occurs while attempting to invoke the API
      */
-    public Mono<ModelApiResponse> uploadFile(Long petId, String additionalMetadata, File file) throws WebClientResponseException {
+    public Mono<ModelApiResponse> uploadFile(Long petId, String additionalMetadata, File _file) throws WebClientResponseException {
         ParameterizedTypeReference<ModelApiResponse> localVarReturnType = new ParameterizedTypeReference<ModelApiResponse>() {};
-        return uploadFileRequestCreation(petId, additionalMetadata, file).bodyToMono(localVarReturnType);
+        return uploadFileRequestCreation(petId, additionalMetadata, _file).bodyToMono(localVarReturnType);
     }
 
-    public Mono<ResponseEntity<ModelApiResponse>> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws WebClientResponseException {
+    public Mono<ResponseEntity<ModelApiResponse>> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws WebClientResponseException {
         ParameterizedTypeReference<ModelApiResponse> localVarReturnType = new ParameterizedTypeReference<ModelApiResponse>() {};
-        return uploadFileRequestCreation(petId, additionalMetadata, file).toEntity(localVarReturnType);
+        return uploadFileRequestCreation(petId, additionalMetadata, _file).toEntity(localVarReturnType);
     }
     /**
      * uploads an image (required)
diff --git a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 3aa79df4ac5..78045f685e8 100644
--- a/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/client/petstore/java/webclient/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -24,6 +24,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonTypeName;
 
@@ -38,48 +39,48 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass _file(ModelFile _file) {
     
-    this.file = file;
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -117,20 +118,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/client/petstore/javascript-flowtyped/.openapi-generator/VERSION b/samples/client/petstore/javascript-flowtyped/.openapi-generator/VERSION
index 4b448de535c..0984c4c1ad2 100644
--- a/samples/client/petstore/javascript-flowtyped/.openapi-generator/VERSION
+++ b/samples/client/petstore/javascript-flowtyped/.openapi-generator/VERSION
@@ -1 +1 @@
-5.3.0-SNAPSHOT
\ No newline at end of file
+5.4.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/javascript-flowtyped/lib/api.js b/samples/client/petstore/javascript-flowtyped/lib/api.js
index d1896d86781..eca41f9154b 100644
--- a/samples/client/petstore/javascript-flowtyped/lib/api.js
+++ b/samples/client/petstore/javascript-flowtyped/lib/api.js
@@ -3,7 +3,7 @@
 Object.defineProperty(exports, "__esModule", {
   value: true
 });
-exports.UserApi = exports.UserApiFetchParamCreator = exports.StoreApi = exports.StoreApiFetchParamCreator = exports.PetApi = exports.PetApiFetchParamCreator = exports.RequiredError = exports.COLLECTION_FORMATS = void 0;
+exports.UserApiFetchParamCreator = exports.UserApi = exports.StoreApiFetchParamCreator = exports.StoreApi = exports.RequiredError = exports.PetApiFetchParamCreator = exports.PetApi = exports.COLLECTION_FORMATS = void 0;
 
 var url = _interopRequireWildcard(require("url"));
 
diff --git a/samples/client/petstore/javascript-flowtyped/package-lock.json b/samples/client/petstore/javascript-flowtyped/package-lock.json
index 335a4fecf8b..0384e828482 100644
--- a/samples/client/petstore/javascript-flowtyped/package-lock.json
+++ b/samples/client/petstore/javascript-flowtyped/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "license": "Unlicense",
       "dependencies": {
-        "node-fetch": ">=2.6.1",
+        "node-fetch": ">=3.1.1",
         "portable-fetch": "^3.0.0"
       },
       "devDependencies": {
@@ -24,13 +24,11 @@
       }
     },
     "node_modules/@babel/cli": {
-      "version": "7.14.8",
-      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.14.8.tgz",
-      "integrity": "sha512-lcy6Lymft9Rpfqmrqdd4oTDdUx9ZwaAhAfywVrHG4771Pa6PPT0danJ1kDHBXYqh4HHSmIdA+nlmfxfxSDPtBg==",
+      "version": "7.16.8",
+      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.16.8.tgz",
+      "integrity": "sha512-FTKBbxyk5TclXOGmwYyqelqP5IF6hMxaeJskd85jbR5jBfYlwqgwAbJwnixi1ZBbTqKfFuAA95mdmUFeSRwyJA==",
       "dev": true,
       "dependencies": {
-        "@nicolo-ribaudo/chokidar-2": "2.1.8-no-fsevents.2",
-        "chokidar": "^3.4.0",
         "commander": "^4.0.1",
         "convert-source-map": "^1.1.0",
         "fs-readdir-recursive": "^1.1.0",
@@ -47,7 +45,7 @@
         "node": ">=6.9.0"
       },
       "optionalDependencies": {
-        "@nicolo-ribaudo/chokidar-2": "2.1.8-no-fsevents.2",
+        "@nicolo-ribaudo/chokidar-2": "2.1.8-no-fsevents.3",
         "chokidar": "^3.4.0"
       },
       "peerDependencies": {
@@ -55,41 +53,41 @@
       }
     },
     "node_modules/@babel/code-frame": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.14.5.tgz",
-      "integrity": "sha512-9pzDqyc6OLDaqe+zbACgFkb6fKMNG6CObKpnYXChRsvYGyEdc7CA2BaqeOM+vOtCS5ndmJicPJhKAwYRI6UfFw==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.16.7.tgz",
+      "integrity": "sha512-iAXqUn8IIeBTNd72xsFlgaXHkMBMt6y4HJp1tIaK465CWLT/fG1aqB7ykr95gHHmlBdGbFeWWfyB4NJJ0nmeIg==",
       "dev": true,
       "dependencies": {
-        "@babel/highlight": "^7.14.5"
+        "@babel/highlight": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/compat-data": {
-      "version": "7.15.0",
-      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.15.0.tgz",
-      "integrity": "sha512-0NqAC1IJE0S0+lL1SWFMxMkz1pKCNCjI4tr2Zx4LJSXxCLAdr6KyArnY+sno5m3yH9g737ygOyPABDsnXkpxiA==",
+      "version": "7.16.8",
+      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.16.8.tgz",
+      "integrity": "sha512-m7OkX0IdKLKPpBlJtF561YJal5y/jyI5fNfWbPxh2D/nbzzGI4qRyrD8xO2jB24u7l+5I2a43scCG2IrfjC50Q==",
       "dev": true,
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/core": {
-      "version": "7.15.0",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.15.0.tgz",
-      "integrity": "sha512-tXtmTminrze5HEUPn/a0JtOzzfp0nk+UEXQ/tqIJo3WDGypl/2OFQEMll/zSFU8f/lfmfLXvTaORHF3cfXIQMw==",
+      "version": "7.16.10",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.16.10.tgz",
+      "integrity": "sha512-pbiIdZbCiMx/MM6toR+OfXarYix3uz0oVsnNtfdAGTcCTu3w/JGF8JhirevXLBJUu0WguSZI12qpKnx7EeMyLA==",
       "dev": true,
       "dependencies": {
-        "@babel/code-frame": "^7.14.5",
-        "@babel/generator": "^7.15.0",
-        "@babel/helper-compilation-targets": "^7.15.0",
-        "@babel/helper-module-transforms": "^7.15.0",
-        "@babel/helpers": "^7.14.8",
-        "@babel/parser": "^7.15.0",
-        "@babel/template": "^7.14.5",
-        "@babel/traverse": "^7.15.0",
-        "@babel/types": "^7.15.0",
+        "@babel/code-frame": "^7.16.7",
+        "@babel/generator": "^7.16.8",
+        "@babel/helper-compilation-targets": "^7.16.7",
+        "@babel/helper-module-transforms": "^7.16.7",
+        "@babel/helpers": "^7.16.7",
+        "@babel/parser": "^7.16.10",
+        "@babel/template": "^7.16.7",
+        "@babel/traverse": "^7.16.10",
+        "@babel/types": "^7.16.8",
         "convert-source-map": "^1.7.0",
         "debug": "^4.1.0",
         "gensync": "^1.0.0-beta.2",
@@ -106,12 +104,12 @@
       }
     },
     "node_modules/@babel/generator": {
-      "version": "7.15.0",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.15.0.tgz",
-      "integrity": "sha512-eKl4XdMrbpYvuB505KTta4AV9g+wWzmVBW69tX0H2NwKVKd2YJbKgyK6M8j/rgLbmHOYJn6rUklV677nOyJrEQ==",
+      "version": "7.16.8",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.16.8.tgz",
+      "integrity": "sha512-1ojZwE9+lOXzcWdWmO6TbUzDfqLD39CmEhN8+2cX9XkDo5yW1OpgfejfliysR2AWLpMamTiOiAp/mtroaymhpw==",
       "dev": true,
       "dependencies": {
-        "@babel/types": "^7.15.0",
+        "@babel/types": "^7.16.8",
         "jsesc": "^2.5.1",
         "source-map": "^0.5.0"
       },
@@ -120,39 +118,39 @@
       }
     },
     "node_modules/@babel/helper-annotate-as-pure": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.14.5.tgz",
-      "integrity": "sha512-EivH9EgBIb+G8ij1B2jAwSH36WnGvkQSEC6CkX/6v6ZFlw5fVOHvsgGF4uiEHO2GzMvunZb6tDLQEQSdrdocrA==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-annotate-as-pure/-/helper-annotate-as-pure-7.16.7.tgz",
+      "integrity": "sha512-s6t2w/IPQVTAET1HitoowRGXooX8mCgtuP5195wD/QJPV6wYjpujCGF7JuMODVX2ZAJOf1GT6DT9MHEZvLOFSw==",
       "dev": true,
       "dependencies": {
-        "@babel/types": "^7.14.5"
+        "@babel/types": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-builder-binary-assignment-operator-visitor": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.14.5.tgz",
-      "integrity": "sha512-YTA/Twn0vBXDVGJuAX6PwW7x5zQei1luDDo2Pl6q1qZ7hVNl0RZrhHCQG/ArGpR29Vl7ETiB8eJyrvpuRp300w==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.16.7.tgz",
+      "integrity": "sha512-C6FdbRaxYjwVu/geKW4ZeQ0Q31AftgRcdSnZ5/jsH6BzCJbtvXvhpfkbkThYSuutZA7nCXpPR6AD9zd1dprMkA==",
       "dev": true,
       "dependencies": {
-        "@babel/helper-explode-assignable-expression": "^7.14.5",
-        "@babel/types": "^7.14.5"
+        "@babel/helper-explode-assignable-expression": "^7.16.7",
+        "@babel/types": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-compilation-targets": {
-      "version": "7.15.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.15.0.tgz",
-      "integrity": "sha512-h+/9t0ncd4jfZ8wsdAsoIxSa61qhBYlycXiHWqJaQBCXAhDCMbPRSMTGnZIkkmt1u4ag+UQmuqcILwqKzZ4N2A==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.16.7.tgz",
+      "integrity": "sha512-mGojBwIWcwGD6rfqgRXVlVYmPAv7eOpIemUG3dGnDdCY4Pae70ROij3XmfrH6Fa1h1aiDylpglbZyktfzyo/hA==",
       "dev": true,
       "dependencies": {
-        "@babel/compat-data": "^7.15.0",
-        "@babel/helper-validator-option": "^7.14.5",
-        "browserslist": "^4.16.6",
+        "@babel/compat-data": "^7.16.4",
+        "@babel/helper-validator-option": "^7.16.7",
+        "browserslist": "^4.17.5",
         "semver": "^6.3.0"
       },
       "engines": {
@@ -163,17 +161,18 @@
       }
     },
     "node_modules/@babel/helper-create-class-features-plugin": {
-      "version": "7.15.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.15.0.tgz",
-      "integrity": "sha512-MdmDXgvTIi4heDVX/e9EFfeGpugqm9fobBVg/iioE8kueXrOHdRDe36FAY7SnE9xXLVeYCoJR/gdrBEIHRC83Q==",
+      "version": "7.16.10",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.16.10.tgz",
+      "integrity": "sha512-wDeej0pu3WN/ffTxMNCPW5UCiOav8IcLRxSIyp/9+IF2xJUM9h/OYjg0IJLHaL6F8oU8kqMz9nc1vryXhMsgXg==",
       "dev": true,
       "dependencies": {
-        "@babel/helper-annotate-as-pure": "^7.14.5",
-        "@babel/helper-function-name": "^7.14.5",
-        "@babel/helper-member-expression-to-functions": "^7.15.0",
-        "@babel/helper-optimise-call-expression": "^7.14.5",
-        "@babel/helper-replace-supers": "^7.15.0",
-        "@babel/helper-split-export-declaration": "^7.14.5"
+        "@babel/helper-annotate-as-pure": "^7.16.7",
+        "@babel/helper-environment-visitor": "^7.16.7",
+        "@babel/helper-function-name": "^7.16.7",
+        "@babel/helper-member-expression-to-functions": "^7.16.7",
+        "@babel/helper-optimise-call-expression": "^7.16.7",
+        "@babel/helper-replace-supers": "^7.16.7",
+        "@babel/helper-split-export-declaration": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
@@ -183,12 +182,12 @@
       }
     },
     "node_modules/@babel/helper-create-regexp-features-plugin": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.14.5.tgz",
-      "integrity": "sha512-TLawwqpOErY2HhWbGJ2nZT5wSkR192QpN+nBg1THfBfftrlvOh+WbhrxXCH4q4xJ9Gl16BGPR/48JA+Ryiho/A==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.16.7.tgz",
+      "integrity": "sha512-fk5A6ymfp+O5+p2yCkXAu5Kyj6v0xh0RBeNcAkYUMDvvAAoxvSKXn+Jb37t/yWFiQVDFK1ELpUTD8/aLhCPu+g==",
       "dev": true,
       "dependencies": {
-        "@babel/helper-annotate-as-pure": "^7.14.5",
+        "@babel/helper-annotate-as-pure": "^7.16.7",
         "regexpu-core": "^4.7.1"
       },
       "engines": {
@@ -199,251 +198,264 @@
       }
     },
     "node_modules/@babel/helper-define-map": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.14.5.tgz",
-      "integrity": "sha512-spfQRnoChdYWwyFetQDBSDBgH42VskaquRI52kbLei5MjV7s3NPq30/sh2S3YdT20Ku/ZpaNnTVgmDo20NWylg==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-define-map/-/helper-define-map-7.16.7.tgz",
+      "integrity": "sha512-SoIOh18NdeBBQjiLF1H32jpDLkApTbUWwEXmqaxn1KEm7aqry4reaghMdCdkbdloVmMwUxM/uCcTmHWj9zJbxQ==",
       "dev": true,
       "dependencies": {
-        "@babel/helper-function-name": "^7.14.5",
-        "@babel/types": "^7.14.5"
+        "@babel/helper-function-name": "^7.16.7",
+        "@babel/types": "^7.16.7"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-environment-visitor": {
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-environment-visitor/-/helper-environment-visitor-7.16.7.tgz",
+      "integrity": "sha512-SLLb0AAn6PkUeAfKJCCOl9e1R53pQlGAfc4y4XuMRZfqeMYLE0dM1LMhqbGAlGQY0lfw5/ohoYWAe9V1yibRag==",
+      "dev": true,
+      "dependencies": {
+        "@babel/types": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-explode-assignable-expression": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-explode-assignable-expression/-/helper-explode-assignable-expression-7.14.5.tgz",
-      "integrity": "sha512-Htb24gnGJdIGT4vnRKMdoXiOIlqOLmdiUYpAQ0mYfgVT/GDm8GOYhgi4GL+hMKrkiPRohO4ts34ELFsGAPQLDQ==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-explode-assignable-expression/-/helper-explode-assignable-expression-7.16.7.tgz",
+      "integrity": "sha512-KyUenhWMC8VrxzkGP0Jizjo4/Zx+1nNZhgocs+gLzyZyB8SHidhoq9KK/8Ato4anhwsivfkBLftky7gvzbZMtQ==",
       "dev": true,
       "dependencies": {
-        "@babel/types": "^7.14.5"
+        "@babel/types": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-function-name": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.14.5.tgz",
-      "integrity": "sha512-Gjna0AsXWfFvrAuX+VKcN/aNNWonizBj39yGwUzVDVTlMYJMK2Wp6xdpy72mfArFq5uK+NOuexfzZlzI1z9+AQ==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.16.7.tgz",
+      "integrity": "sha512-QfDfEnIUyyBSR3HtrtGECuZ6DAyCkYFp7GHl75vFtTnn6pjKeK0T1DB5lLkFvBea8MdaiUABx3osbgLyInoejA==",
       "dev": true,
       "dependencies": {
-        "@babel/helper-get-function-arity": "^7.14.5",
-        "@babel/template": "^7.14.5",
-        "@babel/types": "^7.14.5"
+        "@babel/helper-get-function-arity": "^7.16.7",
+        "@babel/template": "^7.16.7",
+        "@babel/types": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-get-function-arity": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.14.5.tgz",
-      "integrity": "sha512-I1Db4Shst5lewOM4V+ZKJzQ0JGGaZ6VY1jYvMghRjqs6DWgxLCIyFt30GlnKkfUeFLpJt2vzbMVEXVSXlIFYUg==",
+      "version": "7.16.7",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.16.7.tgz",
+      "integrity": "sha512-flc+RLSOBXzNzVhcLu6ujeHUrD6tANAOU5ojrRx/as+tbzf8+stUCj7+IfRRoAbEZqj/ahXEMsjhOhgeZsrnTw==",
       "dev": true,
       "dependencies": {
-        "@babel/types": "^7.14.5"
+        "@babel/types": "^7.16.7"
       },
       "engines": {
         "node": ">=6.9.0"
       }
     },
     "node_modules/@babel/helper-hoist-variables": {
-      "version": "7.14.5",
-      "resolved": "https://registry.npmjs.org/@babel/helper-hoist-variables/-/helper-hoist-variables-7.14.5.tgz",
-      "integrity": "sha512-R1PXiz31Uc0Vxy4OEOm07x0oSjKAdPPCh3tPivn/Eo8cvz6gveAeuyUUPB21Hoiif0uoPQSSdhIPS3352nvdyQ==",
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@@ -10240,27 +7452,6 @@
         "punycode": "^2.1.0"
       }
     },
-    "urix": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
-      "dev": true,
-      "optional": true
-    },
-    "use": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
-      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
-      "dev": true,
-      "optional": true
-    },
-    "util-deprecate": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true,
-      "optional": true
-    },
     "util.promisify": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/util.promisify/-/util.promisify-1.1.1.tgz",
@@ -10275,9 +7466,9 @@
       }
     },
     "watchpack": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.2.0.tgz",
-      "integrity": "sha512-up4YAn/XHgZHIxFBVCdlMiWDj6WaLKpwVeGQk2I5thdYxF/KmF0aaz6TfJZ/hfl1h/XlcDr7k1KH7ThDagpFaA==",
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.3.1.tgz",
+      "integrity": "sha512-x0t0JuydIo8qCNctdDrn1OzH/qDzk2+rdCOC3YzumZ42fiMqmQ7T3xQurykYMhYfHaPHTp4ZxAx2NfUo1K6QaA==",
       "dev": true,
       "peer": true,
       "requires": {
@@ -10285,10 +7476,15 @@
         "graceful-fs": "^4.1.2"
       }
     },
+    "web-streams-polyfill": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.2.0.tgz",
+      "integrity": "sha512-EqPmREeOzttaLRm5HS7io98goBgZ7IVz79aDvqjD0kYXLtFZTc0T/U6wHTPKyIjb+MdN7DFIIX6hgdBEpWmfPA=="
+    },
     "webpack": {
-      "version": "5.51.1",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.51.1.tgz",
-      "integrity": "sha512-xsn3lwqEKoFvqn4JQggPSRxE4dhsRcysWTqYABAZlmavcoTmwlOb9b1N36Inbt/eIispSkuHa80/FJkDTPos1A==",
+      "version": "5.67.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-5.67.0.tgz",
+      "integrity": "sha512-LjFbfMh89xBDpUMgA1W9Ur6Rn/gnr2Cq1jjHFPo4v6a79/ypznSYbAyPgGhwsxBtMIaEmDD1oJoA7BEYw/Fbrw==",
       "dev": true,
       "peer": true,
       "requires": {
@@ -10301,12 +7497,12 @@
         "acorn-import-assertions": "^1.7.6",
         "browserslist": "^4.14.5",
         "chrome-trace-event": "^1.0.2",
-        "enhanced-resolve": "^5.8.0",
-        "es-module-lexer": "^0.7.1",
+        "enhanced-resolve": "^5.8.3",
+        "es-module-lexer": "^0.9.0",
         "eslint-scope": "5.1.1",
         "events": "^3.2.0",
         "glob-to-regexp": "^0.4.1",
-        "graceful-fs": "^4.2.4",
+        "graceful-fs": "^4.2.9",
         "json-parse-better-errors": "^1.0.2",
         "loader-runner": "^4.2.0",
         "mime-types": "^2.1.27",
@@ -10314,14 +7510,14 @@
         "schema-utils": "^3.1.0",
         "tapable": "^2.1.1",
         "terser-webpack-plugin": "^5.1.3",
-        "watchpack": "^2.2.0",
-        "webpack-sources": "^3.2.0"
+        "watchpack": "^2.3.1",
+        "webpack-sources": "^3.2.3"
       }
     },
     "webpack-sources": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-3.2.0.tgz",
-      "integrity": "sha512-fahN08Et7P9trej8xz/Z7eRu8ltyiygEo/hnRi9KqBUs80KeDcnf96ZJo++ewWd84fEf3xSX9bp4ZS9hbw0OBw==",
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-3.2.3.tgz",
+      "integrity": "sha512-/DyMEOrDgLKKIG0fmvtz+4dUX/3Ghozwgm6iPp8KRhvn+eQf9+Q7GWxVNMk3+uCPWfdXYC4ExGBckIXdFEfH1w==",
       "dev": true,
       "peer": true
     },
@@ -10462,13 +7658,6 @@
         "camelcase": "^5.0.0",
         "decamelize": "^1.2.0"
       }
-    },
-    "yocto-queue": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
-      "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
-      "dev": true,
-      "peer": true
     }
   }
 }
diff --git a/samples/client/petstore/javascript-flowtyped/package.json b/samples/client/petstore/javascript-flowtyped/package.json
index a3dd89f5cbf..393540acf32 100644
--- a/samples/client/petstore/javascript-flowtyped/package.json
+++ b/samples/client/petstore/javascript-flowtyped/package.json
@@ -19,7 +19,7 @@
     "build:flow": "flow-copy-source -v -i '**/__tests__/**' src lib"
   },
   "dependencies": {
-    "node-fetch": ">=2.6.1",
+    "node-fetch": ">=3.1.1",
     "portable-fetch": "^3.0.0"
   },
   "devDependencies": {
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/.openapi-generator/VERSION b/samples/client/petstore/jaxrs-cxf-client-jackson/.openapi-generator/VERSION
index 6555596f931..0984c4c1ad2 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/.openapi-generator/VERSION
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/.openapi-generator/VERSION
@@ -1 +1 @@
-5.2.0-SNAPSHOT
\ No newline at end of file
+5.4.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/pom.xml b/samples/client/petstore/jaxrs-cxf-client-jackson/pom.xml
index 7fccbfb562e..177096636d3 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/pom.xml
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/pom.xml
@@ -6,6 +6,8 @@
   <name>jaxrs-cxf-jackson-petstore-client</name>
   <description>This is a sample server Petstore server. For this sample, you can use the api key &#x60;special-key&#x60; to test the authorization filters.</description>
   <version>1.0.0</version>
+
+
   <build>
     <sourceDirectory>src/main/java</sourceDirectory>
     <plugins>
@@ -111,7 +113,7 @@
         <version>${cxf-version}</version>
         <scope>test</scope>
     </dependency>
-    
+
      <!-- CXF server -->
     <dependency>
         <groupId>org.apache.cxf</groupId>
@@ -172,7 +174,6 @@
     <jetty-version>9.2.9.v20150224</jetty-version>
     <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
-    <servlet-api-version>2.5</servlet-api-version>
     <cxf-version>3.3.0</cxf-version>
     <jackson-jaxrs-version>2.9.9</jackson-jaxrs-version>
     <jakarta-annotation-version>1.3.5</jakarta-annotation-version>
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/PetApi.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/PetApi.java
index 51cce1e1d63..cb3a46b1f51 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/PetApi.java
@@ -135,6 +135,5 @@ public interface PetApi  {
     @ApiOperation(value = "uploads an image", tags={  })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail);
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail);
 }
-
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/StoreApi.java
index 073884a0c6f..c1216ebe2cc 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/StoreApi.java
@@ -84,4 +84,3 @@ public interface StoreApi  {
         @ApiResponse(code = 400, message = "Invalid Order") })
     public Order placeOrder(Order body);
 }
-
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/UserApi.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/UserApi.java
index ee7ab783661..31d37fe19cd 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/api/UserApi.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import java.util.Date;
 import org.openapitools.model.User;
 
 import java.io.InputStream;
@@ -128,4 +129,3 @@ public interface UserApi  {
         @ApiResponse(code = 404, message = "User not found") })
     public void updateUser(@PathParam("username") String username, User body);
 }
-
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Category.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Category.java
index 8312405424a..385d6324ae4 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Category.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/ModelApiResponse.java
index 14b393d1097..d37f40980d3 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/ModelApiResponse.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Order.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Order.java
index 770e6d30baa..aa0f0ce80b8 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Order.java
@@ -6,13 +6,6 @@ import io.swagger.annotations.ApiModel;
 import java.util.Date;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
@@ -33,11 +26,9 @@ public class Order  {
   @ApiModelProperty(value = "")
   private Date shipDate;
 
-@XmlType(name="StatusEnum")
-@XmlEnum(String.class)
 public enum StatusEnum {
 
-@XmlEnumValue("placed") PLACED(String.valueOf("placed")), @XmlEnumValue("approved") APPROVED(String.valueOf("approved")), @XmlEnumValue("delivered") DELIVERED(String.valueOf("delivered"));
+PLACED(String.valueOf("placed")), APPROVED(String.valueOf("approved")), DELIVERED(String.valueOf("delivered"));
 
 
     private String value;
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Pet.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Pet.java
index 807cb4182d8..c151c373398 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Pet.java
@@ -9,13 +9,6 @@ import org.openapitools.model.Category;
 import org.openapitools.model.Tag;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
@@ -39,11 +32,9 @@ public class Pet  {
   @ApiModelProperty(value = "")
   private List<Tag> tags = null;
 
-@XmlType(name="StatusEnum")
-@XmlEnum(String.class)
 public enum StatusEnum {
 
-@XmlEnumValue("available") AVAILABLE(String.valueOf("available")), @XmlEnumValue("pending") PENDING(String.valueOf("pending")), @XmlEnumValue("sold") SOLD(String.valueOf("sold"));
+AVAILABLE(String.valueOf("available")), PENDING(String.valueOf("pending")), SOLD(String.valueOf("sold"));
 
 
     private String value;
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Tag.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Tag.java
index ad321a15496..49680fe48a4 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/Tag.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/User.java b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/User.java
index 0cd34a9baf4..bab06ed1f71 100644
--- a/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/jaxrs-cxf-client-jackson/src/gen/java/org/openapitools/model/User.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client/.openapi-generator/VERSION b/samples/client/petstore/jaxrs-cxf-client/.openapi-generator/VERSION
index 6555596f931..0984c4c1ad2 100644
--- a/samples/client/petstore/jaxrs-cxf-client/.openapi-generator/VERSION
+++ b/samples/client/petstore/jaxrs-cxf-client/.openapi-generator/VERSION
@@ -1 +1 @@
-5.2.0-SNAPSHOT
\ No newline at end of file
+5.4.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/jaxrs-cxf-client/pom.xml b/samples/client/petstore/jaxrs-cxf-client/pom.xml
index d2c3b968a2a..bb40eef574a 100644
--- a/samples/client/petstore/jaxrs-cxf-client/pom.xml
+++ b/samples/client/petstore/jaxrs-cxf-client/pom.xml
@@ -6,6 +6,8 @@
   <name>jaxrs-cxf-petstore-client</name>
   <description>This is a sample server Petstore server. For this sample, you can use the api key &#x60;special-key&#x60; to test the authorization filters.</description>
   <version>1.0.0</version>
+
+
   <build>
     <sourceDirectory>src/main/java</sourceDirectory>
     <plugins>
@@ -111,7 +113,7 @@
         <version>${cxf-version}</version>
         <scope>test</scope>
     </dependency>
-    
+
      <!-- CXF server -->
     <dependency>
         <groupId>org.apache.cxf</groupId>
@@ -172,7 +174,6 @@
     <jetty-version>9.2.9.v20150224</jetty-version>
     <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
-    <servlet-api-version>2.5</servlet-api-version>
     <cxf-version>3.3.0</cxf-version>
     <jackson-jaxrs-version>2.9.9</jackson-jaxrs-version>
     <jakarta-annotation-version>1.3.5</jakarta-annotation-version>
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/PetApi.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/PetApi.java
index 51cce1e1d63..cb3a46b1f51 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/PetApi.java
@@ -135,6 +135,5 @@ public interface PetApi  {
     @ApiOperation(value = "uploads an image", tags={  })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail);
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail);
 }
-
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/StoreApi.java
index 073884a0c6f..c1216ebe2cc 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/StoreApi.java
@@ -84,4 +84,3 @@ public interface StoreApi  {
         @ApiResponse(code = 400, message = "Invalid Order") })
     public Order placeOrder(Order body);
 }
-
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/UserApi.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/UserApi.java
index ee7ab783661..31d37fe19cd 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/api/UserApi.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import java.util.Date;
 import org.openapitools.model.User;
 
 import java.io.InputStream;
@@ -128,4 +129,3 @@ public interface UserApi  {
         @ApiResponse(code = 404, message = "User not found") })
     public void updateUser(@PathParam("username") String username, User body);
 }
-
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Category.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Category.java
index 8312405424a..385d6324ae4 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Category.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/ModelApiResponse.java
index 14b393d1097..d37f40980d3 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/ModelApiResponse.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Order.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Order.java
index 9ebf511b68e..76f00250240 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Order.java
@@ -4,13 +4,6 @@ import io.swagger.annotations.ApiModel;
 import java.util.Date;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
@@ -31,11 +24,9 @@ public class Order  {
   @ApiModelProperty(value = "")
   private Date shipDate;
 
-@XmlType(name="StatusEnum")
-@XmlEnum(String.class)
 public enum StatusEnum {
 
-@XmlEnumValue("placed") PLACED(String.valueOf("placed")), @XmlEnumValue("approved") APPROVED(String.valueOf("approved")), @XmlEnumValue("delivered") DELIVERED(String.valueOf("delivered"));
+PLACED(String.valueOf("placed")), APPROVED(String.valueOf("approved")), DELIVERED(String.valueOf("delivered"));
 
 
     private String value;
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Pet.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Pet.java
index d6dd036a532..baf8f5a9d7b 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Pet.java
@@ -7,13 +7,6 @@ import org.openapitools.model.Category;
 import org.openapitools.model.Tag;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
@@ -37,11 +30,9 @@ public class Pet  {
   @ApiModelProperty(value = "")
   private List<Tag> tags = null;
 
-@XmlType(name="StatusEnum")
-@XmlEnum(String.class)
 public enum StatusEnum {
 
-@XmlEnumValue("available") AVAILABLE(String.valueOf("available")), @XmlEnumValue("pending") PENDING(String.valueOf("pending")), @XmlEnumValue("sold") SOLD(String.valueOf("sold"));
+AVAILABLE(String.valueOf("available")), PENDING(String.valueOf("pending")), SOLD(String.valueOf("sold"));
 
 
     private String value;
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Tag.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Tag.java
index ad321a15496..49680fe48a4 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/Tag.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/User.java b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/User.java
index 0cd34a9baf4..bab06ed1f71 100644
--- a/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/jaxrs-cxf-client/src/gen/java/org/openapitools/model/User.java
@@ -3,13 +3,6 @@ package org.openapitools.model;
 import io.swagger.annotations.ApiModel;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 /**
diff --git a/samples/server/petstore/nancyfx-async/.openapi-generator-ignore b/samples/client/petstore/kotlin-array-simple-string/.openapi-generator-ignore
similarity index 78%
rename from samples/server/petstore/nancyfx-async/.openapi-generator-ignore
rename to samples/client/petstore/kotlin-array-simple-string/.openapi-generator-ignore
index c5fa491b4c5..7484ee590a3 100644
--- a/samples/server/petstore/nancyfx-async/.openapi-generator-ignore
+++ b/samples/client/petstore/kotlin-array-simple-string/.openapi-generator-ignore
@@ -1,11 +1,11 @@
-# Swagger Codegen Ignore
-# Generated by swagger-codegen https://github.com/swagger-api/swagger-codegen
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
 
 # Use this file to prevent files from being overwritten by the generator.
 # The patterns follow closely to .gitignore or .dockerignore.
 
 # As an example, the C# client generator defines ApiClient.cs.
-# You can make changes and tell Swagger Codgen to ignore just this file by uncommenting the following line:
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
 #ApiClient.cs
 
 # You can match any string of characters against a directory, file or extension with a single asterisk (*):
diff --git a/samples/client/petstore/kotlin-array-simple-string/.openapi-generator/FILES b/samples/client/petstore/kotlin-array-simple-string/.openapi-generator/FILES
new file mode 100644
index 00000000000..d731beb9d87
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/.openapi-generator/FILES
@@ -0,0 +1,25 @@
+README.md
+build.gradle
+docs/DefaultApi.md
+gradle/wrapper/gradle-wrapper.jar
+gradle/wrapper/gradle-wrapper.properties
+gradlew
+gradlew.bat
+settings.gradle
+src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt
+src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt
+src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
+src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt
+src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
+src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt
diff --git a/samples/client/petstore/kotlin-array-simple-string/.openapi-generator/VERSION b/samples/client/petstore/kotlin-array-simple-string/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/README.md b/samples/client/petstore/kotlin-array-simple-string/README.md
new file mode 100644
index 00000000000..833e3ab254f
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/README.md
@@ -0,0 +1,49 @@
+# org.openapitools.client - Kotlin client library for Demo
+
+## Requires
+
+* Kotlin 1.4.30
+* Gradle 6.8.3
+
+## Build
+
+First, create the gradle wrapper script:
+
+```
+gradle wrapper
+```
+
+Then, run:
+
+```
+./gradlew check assemble
+```
+
+This runs all tests and packages the library.
+
+## Features/Implementation Notes
+
+* Supports JSON inputs/outputs, File inputs, and Form inputs.
+* Supports collection formats for query parameters: csv, tsv, ssv, pipes.
+* Some Kotlin and Java types are fully qualified to avoid conflicts with types defined in OpenAPI definitions.
+* Implementation of ApiClient is intended to reduce method counts, specifically to benefit Android targets.
+
+<a name="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*DefaultApi* | [**idsGet**](docs/DefaultApi.md#idsget) | **GET** /{ids} | 
+
+
+<a name="documentation-for-models"></a>
+## Documentation for Models
+
+
+
+<a name="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+All endpoints do not require authorization.
diff --git a/samples/client/petstore/kotlin-array-simple-string/build.gradle b/samples/client/petstore/kotlin-array-simple-string/build.gradle
new file mode 100644
index 00000000000..3de8b45b135
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/build.gradle
@@ -0,0 +1,37 @@
+group 'org.openapitools'
+version '1.0.0'
+
+wrapper {
+    gradleVersion = '6.8.3'
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = '1.5.10'
+
+    repositories {
+        maven { url "https://repo1.maven.org/maven2" }
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+    maven { url "https://repo1.maven.org/maven2" }
+}
+
+test {
+    useJUnitPlatform()
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
+    implementation "com.squareup.moshi:moshi-kotlin:1.12.0"
+    implementation "com.squareup.moshi:moshi-adapters:1.12.0"
+    implementation "com.squareup.okhttp3:okhttp:4.9.1"
+    testImplementation "io.kotlintest:kotlintest-runner-junit5:3.4.2"
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/docs/DefaultApi.md b/samples/client/petstore/kotlin-array-simple-string/docs/DefaultApi.md
new file mode 100644
index 00000000000..45b43113f19
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/docs/DefaultApi.md
@@ -0,0 +1,53 @@
+# DefaultApi
+
+All URIs are relative to *http://localhost*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**idsGet**](DefaultApi.md#idsGet) | **GET** /{ids} | 
+
+
+<a name="idsGet"></a>
+# **idsGet**
+> idsGet(ids)
+
+
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = DefaultApi()
+val ids : kotlin.collections.List<kotlin.String> =  // kotlin.collections.List<kotlin.String> | 
+try {
+    apiInstance.idsGet(ids)
+} catch (e: ClientException) {
+    println("4xx response calling DefaultApi#idsGet")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling DefaultApi#idsGet")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **ids** | [**kotlin.collections.List&lt;kotlin.String&gt;**](kotlin.String.md)|  |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
diff --git a/samples/client/petstore/kotlin-array-simple-string/gradle/wrapper/gradle-wrapper.jar b/samples/client/petstore/kotlin-array-simple-string/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000000..e708b1c023e
Binary files /dev/null and b/samples/client/petstore/kotlin-array-simple-string/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/client/petstore/kotlin-array-simple-string/gradle/wrapper/gradle-wrapper.properties b/samples/client/petstore/kotlin-array-simple-string/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000000..8cf6eb5ad22
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.3-all.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/samples/client/petstore/kotlin-array-simple-string/gradlew b/samples/client/petstore/kotlin-array-simple-string/gradlew
new file mode 100644
index 00000000000..4f906e0c811
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/samples/client/petstore/kotlin-array-simple-string/gradlew.bat b/samples/client/petstore/kotlin-array-simple-string/gradlew.bat
new file mode 100644
index 00000000000..107acd32c4e
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/samples/client/petstore/kotlin-array-simple-string/settings.gradle b/samples/client/petstore/kotlin-array-simple-string/settings.gradle
new file mode 100644
index 00000000000..646809e89a5
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/settings.gradle
@@ -0,0 +1,2 @@
+
+rootProject.name = 'kotlin-array-simple-string'
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt
new file mode 100644
index 00000000000..3a686204890
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt
@@ -0,0 +1,116 @@
+/**
+ * Demo
+ *
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ */
+
+@file:Suppress(
+    "ArrayInDataClass",
+    "EnumEntryName",
+    "RemoveRedundantQualifierName",
+    "UnusedImport"
+)
+
+package org.openapitools.client.apis
+
+import java.io.IOException
+
+
+import com.squareup.moshi.Json
+
+import org.openapitools.client.infrastructure.ApiClient
+import org.openapitools.client.infrastructure.ApiResponse
+import org.openapitools.client.infrastructure.ClientException
+import org.openapitools.client.infrastructure.ClientError
+import org.openapitools.client.infrastructure.ServerException
+import org.openapitools.client.infrastructure.ServerError
+import org.openapitools.client.infrastructure.MultiValueMap
+import org.openapitools.client.infrastructure.RequestConfig
+import org.openapitools.client.infrastructure.RequestMethod
+import org.openapitools.client.infrastructure.ResponseType
+import org.openapitools.client.infrastructure.Success
+import org.openapitools.client.infrastructure.toMultiValue
+
+class DefaultApi(basePath: kotlin.String = defaultBasePath) : ApiClient(basePath) {
+    companion object {
+        @JvmStatic
+        val defaultBasePath: String by lazy {
+            System.getProperties().getProperty(ApiClient.baseUrlKey, "http://localhost")
+        }
+    }
+
+    /**
+    * 
+    * 
+    * @param ids  
+    * @return void
+    * @throws IllegalStateException If the request is not correctly configured
+    * @throws IOException Rethrows the OkHttp execute method exception
+    * @throws UnsupportedOperationException If the API returns an informational or redirection response
+    * @throws ClientException If the API returns a client error response
+    * @throws ServerException If the API returns a server error response
+    */
+    @Throws(IllegalStateException::class, IOException::class, UnsupportedOperationException::class, ClientException::class, ServerException::class)
+    fun idsGet(ids: kotlin.collections.List<kotlin.String>) : Unit {
+        val localVarResponse = idsGetWithHttpInfo(ids = ids)
+
+        return when (localVarResponse.responseType) {
+            ResponseType.Success -> Unit
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> {
+                val localVarError = localVarResponse as ClientError<*>
+                throw ClientException("Client error : ${localVarError.statusCode} ${localVarError.message.orEmpty()}", localVarError.statusCode, localVarResponse)
+            }
+            ResponseType.ServerError -> {
+                val localVarError = localVarResponse as ServerError<*>
+                throw ServerException("Server error : ${localVarError.statusCode} ${localVarError.message.orEmpty()}", localVarError.statusCode, localVarResponse)
+            }
+        }
+    }
+
+    /**
+    * 
+    * 
+    * @param ids  
+    * @return ApiResponse<Unit?>
+    * @throws IllegalStateException If the request is not correctly configured
+    * @throws IOException Rethrows the OkHttp execute method exception
+    */
+    @Throws(IllegalStateException::class, IOException::class)
+    fun idsGetWithHttpInfo(ids: kotlin.collections.List<kotlin.String>) : ApiResponse<Unit?> {
+        val localVariableConfig = idsGetRequestConfig(ids = ids)
+
+        return request<Unit, Unit>(
+            localVariableConfig
+        )
+    }
+
+    /**
+    * To obtain the request config of the operation idsGet
+    *
+    * @param ids  
+    * @return RequestConfig
+    */
+    fun idsGetRequestConfig(ids: kotlin.collections.List<kotlin.String>) : RequestConfig<Unit> {
+        val localVariableBody = null
+        val localVariableQuery: MultiValueMap = mutableMapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        
+        return RequestConfig(
+            method = RequestMethod.GET,
+            path = "/{ids}".replace("{"+"ids"+"}", ids.joinToString(",")),
+            query = localVariableQuery,
+            headers = localVariableHeaders,
+            body = localVariableBody
+        )
+    }
+
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
new file mode 100644
index 00000000000..ef7a8f1e1a6
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+typealias MultiValueMap = MutableMap<String,List<String>>
+
+fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
+    "csv" -> ","
+    "tsv" -> "\t"
+    "pipe" -> "|"
+    "space" -> " "
+    else -> ""
+}
+
+val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
+
+fun <T : Any?> toMultiValue(items: Array<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter)
+        = toMultiValue(items.asIterable(), collectionFormat, map)
+
+fun <T : Any?> toMultiValue(items: Iterable<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter): List<String> {
+    return when(collectionFormat) {
+        "multi" -> items.map(map)
+        else -> listOf(items.joinToString(separator = collectionDelimiter(collectionFormat), transform = map))
+    }
+}
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
new file mode 100644
index 00000000000..dc423d8a17d
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -0,0 +1,245 @@
+package org.openapitools.client.infrastructure
+
+import okhttp3.OkHttpClient
+import okhttp3.RequestBody
+import okhttp3.RequestBody.Companion.asRequestBody
+import okhttp3.RequestBody.Companion.toRequestBody
+import okhttp3.FormBody
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
+import okhttp3.ResponseBody
+import okhttp3.MediaType.Companion.toMediaTypeOrNull
+import okhttp3.Request
+import okhttp3.Headers
+import okhttp3.MultipartBody
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Response
+import okhttp3.internal.EMPTY_REQUEST
+import java.io.BufferedWriter
+import java.io.File
+import java.io.FileWriter
+import java.io.IOException
+import java.net.URLConnection
+import java.time.LocalDate
+import java.time.LocalDateTime
+import java.time.LocalTime
+import java.time.OffsetDateTime
+import java.time.OffsetTime
+import java.util.Locale
+import com.squareup.moshi.adapter
+
+open class ApiClient(val baseUrl: String) {
+    companion object {
+        protected const val ContentType = "Content-Type"
+        protected const val Accept = "Accept"
+        protected const val Authorization = "Authorization"
+        protected const val JsonMediaType = "application/json"
+        protected const val FormDataMediaType = "multipart/form-data"
+        protected const val FormUrlEncMediaType = "application/x-www-form-urlencoded"
+        protected const val XmlMediaType = "application/xml"
+
+        val apiKey: MutableMap<String, String> = mutableMapOf()
+        val apiKeyPrefix: MutableMap<String, String> = mutableMapOf()
+        var username: String? = null
+        var password: String? = null
+        var accessToken: String? = null
+        const val baseUrlKey = "org.openapitools.client.baseUrl"
+
+        @JvmStatic
+        val client: OkHttpClient by lazy {
+            builder.build()
+        }
+
+        @JvmStatic
+        val builder: OkHttpClient.Builder = OkHttpClient.Builder()
+    }
+
+    /**
+     * Guess Content-Type header from the given file (defaults to "application/octet-stream").
+     *
+     * @param file The given file
+     * @return The guessed Content-Type
+     */
+    protected fun guessContentTypeFromFile(file: File): String {
+        val contentType = URLConnection.guessContentTypeFromName(file.name)
+        return contentType ?: "application/octet-stream"
+    }
+
+    protected inline fun <reified T> requestBody(content: T, mediaType: String = JsonMediaType): RequestBody =
+        when {
+            content is File -> content.asRequestBody(mediaType.toMediaTypeOrNull())
+            mediaType == FormDataMediaType -> {
+                MultipartBody.Builder()
+                    .setType(MultipartBody.FORM)
+                    .apply {
+                        // content's type *must* be Map<String, Any?>
+                        @Suppress("UNCHECKED_CAST")
+                        (content as Map<String, Any?>).forEach { (key, value) ->
+                            if (value is File) {
+                                val partHeaders = Headers.headersOf(
+                                    "Content-Disposition",
+                                    "form-data; name=\"$key\"; filename=\"${value.name}\""
+                                )
+                                val fileMediaType = guessContentTypeFromFile(value).toMediaTypeOrNull()
+                                addPart(partHeaders, value.asRequestBody(fileMediaType))
+                            } else {
+                                val partHeaders = Headers.headersOf(
+                                    "Content-Disposition",
+                                    "form-data; name=\"$key\""
+                                )
+                                addPart(
+                                    partHeaders,
+                                    parameterToString(value).toRequestBody(null)
+                                )
+                            }
+                        }
+                    }.build()
+            }
+            mediaType == FormUrlEncMediaType -> {
+                FormBody.Builder().apply {
+                    // content's type *must* be Map<String, Any?>
+                    @Suppress("UNCHECKED_CAST")
+                    (content as Map<String, Any?>).forEach { (key, value) ->
+                        add(key, parameterToString(value))
+                    }
+                }.build()
+            }
+            mediaType.startsWith("application/") && mediaType.endsWith("json") ->
+                if (content == null) {
+                    EMPTY_REQUEST
+                } else {
+                    Serializer.moshi.adapter(T::class.java).toJson(content)
+                        .toRequestBody(
+                            mediaType.toMediaTypeOrNull()
+                        )
+                }
+            mediaType == XmlMediaType -> throw UnsupportedOperationException("xml not currently supported.")
+            // TODO: this should be extended with other serializers
+            else -> throw UnsupportedOperationException("requestBody currently only supports JSON body and File body.")
+        }
+
+    @OptIn(ExperimentalStdlibApi::class)
+    protected inline fun <reified T: Any?> responseBody(body: ResponseBody?, mediaType: String? = JsonMediaType): T? {
+        if(body == null) {
+            return null
+        }
+        val bodyContent = body.string()
+        if (bodyContent.isEmpty()) {
+            return null
+        }
+        if (T::class.java == File::class.java) {
+            // return tempfile
+            val f = java.nio.file.Files.createTempFile("tmp.org.openapitools.client", null).toFile()
+            f.deleteOnExit()
+            val out = BufferedWriter(FileWriter(f))
+            out.write(bodyContent)
+            out.close()
+            return f as T
+        }
+        return when {
+        mediaType==null || (mediaType.startsWith("application/") && mediaType.endsWith("json")) ->
+                Serializer.moshi.adapter<T>().fromJson(bodyContent)
+            else ->  throw UnsupportedOperationException("responseBody currently only supports JSON body.")
+        }
+    }
+
+
+    protected inline fun <reified I, reified T: Any?> request(requestConfig: RequestConfig<I>): ApiResponse<T?> {
+        val httpUrl = baseUrl.toHttpUrlOrNull() ?: throw IllegalStateException("baseUrl is invalid.")
+
+        val url = httpUrl.newBuilder()
+            .addPathSegments(requestConfig.path.trimStart('/'))
+            .apply {
+                requestConfig.query.forEach { query ->
+                    query.value.forEach { queryValue ->
+                        addQueryParameter(query.key, queryValue)
+                    }
+                }
+            }.build()
+
+        // take content-type/accept from spec or set to default (application/json) if not defined
+        if (requestConfig.headers[ContentType].isNullOrEmpty()) {
+            requestConfig.headers[ContentType] = JsonMediaType
+        }
+        if (requestConfig.headers[Accept].isNullOrEmpty()) {
+            requestConfig.headers[Accept] = JsonMediaType
+        }
+        val headers = requestConfig.headers
+
+        if(headers[ContentType].isNullOrEmpty()) {
+            throw kotlin.IllegalStateException("Missing Content-Type header. This is required.")
+        }
+
+        if(headers[Accept].isNullOrEmpty()) {
+            throw kotlin.IllegalStateException("Missing Accept header. This is required.")
+        }
+
+        // TODO: support multiple contentType options here.
+        val contentType = (headers[ContentType] as String).substringBefore(";").lowercase(Locale.getDefault())
+
+        val request = when (requestConfig.method) {
+            RequestMethod.DELETE -> Request.Builder().url(url).delete(requestBody(requestConfig.body, contentType))
+            RequestMethod.GET -> Request.Builder().url(url)
+            RequestMethod.HEAD -> Request.Builder().url(url).head()
+            RequestMethod.PATCH -> Request.Builder().url(url).patch(requestBody(requestConfig.body, contentType))
+            RequestMethod.PUT -> Request.Builder().url(url).put(requestBody(requestConfig.body, contentType))
+            RequestMethod.POST -> Request.Builder().url(url).post(requestBody(requestConfig.body, contentType))
+            RequestMethod.OPTIONS -> Request.Builder().url(url).method("OPTIONS", null)
+        }.apply {
+            headers.forEach { header -> addHeader(header.key, header.value) }
+        }.build()
+
+        val response = client.newCall(request).execute()
+
+        val accept = response.header(ContentType)?.substringBefore(";")?.lowercase(Locale.getDefault())
+
+        // TODO: handle specific mapping types. e.g. Map<int, Class<?>>
+        return when {
+            response.isRedirect -> Redirection(
+                response.code,
+                response.headers.toMultimap()
+            )
+            response.isInformational -> Informational(
+                response.message,
+                response.code,
+                response.headers.toMultimap()
+            )
+            response.isSuccessful -> Success(
+                responseBody(response.body, accept),
+                response.code,
+                response.headers.toMultimap()
+            )
+            response.isClientError -> ClientError(
+                response.message,
+                response.body?.string(),
+                response.code,
+                response.headers.toMultimap()
+            )
+            else -> ServerError(
+                response.message,
+                response.body?.string(),
+                response.code,
+                response.headers.toMultimap()
+            )
+        }
+    }
+
+    protected fun parameterToString(value: Any?): String = when (value) {
+        null -> ""
+        is Array<*> -> toMultiValue(value, "csv").toString()
+        is Iterable<*> -> toMultiValue(value, "csv").toString()
+        is OffsetDateTime, is OffsetTime, is LocalDateTime, is LocalDate, is LocalTime ->
+            parseDateToQueryString(value)
+        else -> value.toString()
+    }
+
+    protected inline fun <reified T: Any> parseDateToQueryString(value : T): String {
+        /*
+        .replace("\"", "") converts the json object string to an actual string for the query parameter.
+        The moshi or gson adapter allows a more generic solution instead of trying to use a native
+        formatter. It also easily allows to provide a simple way to define a custom date format pattern
+        inside a gson/moshi adapter.
+        */
+        return Serializer.moshi.adapter(T::class.java).toJson(value).replace("\"", "")
+    }
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt
new file mode 100644
index 00000000000..cf2cfaa95d9
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt
@@ -0,0 +1,43 @@
+package org.openapitools.client.infrastructure
+
+enum class ResponseType {
+    Success, Informational, Redirection, ClientError, ServerError
+}
+
+interface Response
+
+abstract class ApiResponse<T>(val responseType: ResponseType): Response {
+    abstract val statusCode: Int
+    abstract val headers: Map<String,List<String>>
+}
+
+class Success<T>(
+    val data: T,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+): ApiResponse<T>(ResponseType.Success)
+
+class Informational<T>(
+    val statusText: String,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiResponse<T>(ResponseType.Informational)
+
+class Redirection<T>(
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiResponse<T>(ResponseType.Redirection)
+
+class ClientError<T>(
+    val message: String? = null,
+    val body: Any? = null,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiResponse<T>(ResponseType.ClientError)
+
+class ServerError<T>(
+    val message: String? = null,
+    val body: Any? = null,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>>
+): ApiResponse<T>(ResponseType.ServerError)
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt
new file mode 100644
index 00000000000..fb2c972cf8d
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt
@@ -0,0 +1,17 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.math.BigDecimal
+
+class BigDecimalAdapter {
+    @ToJson
+    fun toJson(value: BigDecimal): String {
+        return value.toPlainString()
+    }
+
+    @FromJson
+    fun fromJson(value: String): BigDecimal {
+        return BigDecimal(value)
+    }
+}
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt
new file mode 100644
index 00000000000..4b6963110c9
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt
@@ -0,0 +1,17 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.math.BigInteger
+
+class BigIntegerAdapter {
+    @ToJson
+    fun toJson(value: BigInteger): String {
+        return value.toString()
+    }
+
+    @FromJson
+    fun fromJson(value: String): BigInteger {
+        return BigInteger(value)
+    }
+}
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt
new file mode 100644
index 00000000000..ff5e2a81ee8
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt
@@ -0,0 +1,12 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+
+class ByteArrayAdapter {
+    @ToJson
+    fun toJson(data: ByteArray): String = String(data)
+
+    @FromJson
+    fun fromJson(data: String): ByteArray = data.toByteArray()
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt
new file mode 100644
index 00000000000..b5310e71f13
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt
@@ -0,0 +1,18 @@
+@file:Suppress("unused")
+package org.openapitools.client.infrastructure
+
+import java.lang.RuntimeException
+
+open class ClientException(message: kotlin.String? = null, val statusCode: Int = -1, val response: Response? = null) : RuntimeException(message) {
+
+    companion object {
+        private const val serialVersionUID: Long = 123L
+    }
+}
+
+open class ServerException(message: kotlin.String? = null, val statusCode: Int = -1, val response: Response? = null) : RuntimeException(message) {
+
+    companion object {
+        private const val serialVersionUID: Long = 456L
+    }
+}
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt
new file mode 100644
index 00000000000..b2e1654479a
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+
+class LocalDateAdapter {
+    @ToJson
+    fun toJson(value: LocalDate): String {
+        return DateTimeFormatter.ISO_LOCAL_DATE.format(value)
+    }
+
+    @FromJson
+    fun fromJson(value: String): LocalDate {
+        return LocalDate.parse(value, DateTimeFormatter.ISO_LOCAL_DATE)
+    }
+
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt
new file mode 100644
index 00000000000..e082db94811
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+class LocalDateTimeAdapter {
+    @ToJson
+    fun toJson(value: LocalDateTime): String {
+        return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(value)
+    }
+
+    @FromJson
+    fun fromJson(value: String): LocalDateTime {
+        return LocalDateTime.parse(value, DateTimeFormatter.ISO_LOCAL_DATE_TIME)
+    }
+
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt
new file mode 100644
index 00000000000..87437871a31
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.time.OffsetDateTime
+import java.time.format.DateTimeFormatter
+
+class OffsetDateTimeAdapter {
+    @ToJson
+    fun toJson(value: OffsetDateTime): String {
+        return DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(value)
+    }
+
+    @FromJson
+    fun fromJson(value: String): OffsetDateTime {
+        return OffsetDateTime.parse(value, DateTimeFormatter.ISO_OFFSET_DATE_TIME)
+    }
+
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
new file mode 100644
index 00000000000..7e948e1dd07
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
@@ -0,0 +1,17 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Defines a config object for a given request.
+ * NOTE: This object doesn't include 'body' because it
+ *       allows for caching of the constructed object
+ *       for many request definitions.
+ * NOTE: Headers is a Map<String,String> because rfc2616 defines
+ *       multi-valued headers as csv-only.
+ */
+data class RequestConfig<T>(
+    val method: RequestMethod,
+    val path: String,
+    val headers: MutableMap<String, String> = mutableMapOf(),
+    val query: MutableMap<String, List<String>> = mutableMapOf(),
+    val body: T? = null
+)
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
new file mode 100644
index 00000000000..931b12b8bd7
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
@@ -0,0 +1,8 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Provides enumerated HTTP verbs
+ */
+enum class RequestMethod {
+    GET, DELETE, HEAD, OPTIONS, PATCH, POST, PUT
+}
\ No newline at end of file
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt
new file mode 100644
index 00000000000..9bd2790dc14
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt
@@ -0,0 +1,24 @@
+package org.openapitools.client.infrastructure
+
+import okhttp3.Response
+
+/**
+ * Provides an extension to evaluation whether the response is a 1xx code
+ */
+val Response.isInformational : Boolean get() = this.code in 100..199
+
+/**
+ * Provides an extension to evaluation whether the response is a 3xx code
+ */
+@Suppress("EXTENSION_SHADOWED_BY_MEMBER")
+val Response.isRedirect : Boolean get() = this.code in 300..399
+
+/**
+ * Provides an extension to evaluation whether the response is a 4xx code
+ */
+val Response.isClientError : Boolean get() = this.code in 400..499
+
+/**
+ * Provides an extension to evaluation whether the response is a 5xx (Standard) through 999 (non-standard) code
+ */
+val Response.isServerError : Boolean get() = this.code in 500..999
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
new file mode 100644
index 00000000000..e22592e47d7
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+
+object Serializer {
+    @JvmStatic
+    val moshiBuilder: Moshi.Builder = Moshi.Builder()
+        .add(OffsetDateTimeAdapter())
+        .add(LocalDateTimeAdapter())
+        .add(LocalDateAdapter())
+        .add(UUIDAdapter())
+        .add(ByteArrayAdapter())
+        .add(URIAdapter())
+        .add(KotlinJsonAdapterFactory())
+        .add(BigDecimalAdapter())
+        .add(BigIntegerAdapter())
+
+    @JvmStatic
+    val moshi: Moshi by lazy {
+        moshiBuilder.build()
+    }
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt
new file mode 100644
index 00000000000..927522757da
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt
@@ -0,0 +1,13 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.net.URI
+
+class URIAdapter {
+    @ToJson
+    fun toJson(uri: URI) = uri.toString()
+
+    @FromJson
+    fun fromJson(s: String): URI = URI.create(s)
+}
diff --git a/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt
new file mode 100644
index 00000000000..7ccf7dc25d2
--- /dev/null
+++ b/samples/client/petstore/kotlin-array-simple-string/src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt
@@ -0,0 +1,13 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.util.UUID
+
+class UUIDAdapter {
+    @ToJson
+    fun toJson(uuid: UUID) = uuid.toString()
+
+    @FromJson
+    fun fromJson(s: String): UUID = UUID.fromString(s)
+}
diff --git a/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 46bb56cee10..9898e6001fb 100644
--- a/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -2,10 +2,10 @@ package org.openapitools.client.infrastructure
 
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.AuthenticationRequestBuilder
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.TokenRequestBuilder
-import org.openapitools.client.auth.ApiKeyAuth
 import org.openapitools.client.auth.OAuth
 import org.openapitools.client.auth.OAuth.AccessTokenListener
 import org.openapitools.client.auth.OAuthFlow
+import org.openapitools.client.auth.ApiKeyAuth
 
 import okhttp3.Call
 import okhttp3.Interceptor
diff --git a/samples/client/petstore/kotlin-retrofit2-rx3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-retrofit2-rx3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 11032f9f16c..ffc0e0eb58c 100644
--- a/samples/client/petstore/kotlin-retrofit2-rx3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-retrofit2-rx3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -2,10 +2,10 @@ package org.openapitools.client.infrastructure
 
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.AuthenticationRequestBuilder
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.TokenRequestBuilder
-import org.openapitools.client.auth.ApiKeyAuth
 import org.openapitools.client.auth.OAuth
 import org.openapitools.client.auth.OAuth.AccessTokenListener
 import org.openapitools.client.auth.OAuthFlow
+import org.openapitools.client.auth.ApiKeyAuth
 
 import okhttp3.Call
 import okhttp3.Interceptor
diff --git a/samples/client/petstore/kotlin-retrofit2/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-retrofit2/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 2197b6acb7a..1ca40216481 100644
--- a/samples/client/petstore/kotlin-retrofit2/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-retrofit2/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -2,10 +2,10 @@ package org.openapitools.client.infrastructure
 
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.AuthenticationRequestBuilder
 import org.apache.oltu.oauth2.client.request.OAuthClientRequest.TokenRequestBuilder
-import org.openapitools.client.auth.ApiKeyAuth
 import org.openapitools.client.auth.OAuth
 import org.openapitools.client.auth.OAuth.AccessTokenListener
 import org.openapitools.client.auth.OAuthFlow
+import org.openapitools.client.auth.ApiKeyAuth
 
 import okhttp3.Call
 import okhttp3.Interceptor
diff --git a/samples/client/petstore/php/OpenAPIClient-php/composer.json b/samples/client/petstore/php/OpenAPIClient-php/composer.json
index d884b222adb..2318059097f 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/composer.json
+++ b/samples/client/petstore/php/OpenAPIClient-php/composer.json
@@ -23,7 +23,7 @@
         "ext-json": "*",
         "ext-mbstring": "*",
         "guzzlehttp/guzzle": "^7.3",
-        "guzzlehttp/psr7": "^2.0"
+        "guzzlehttp/psr7": "^1.7 || ^2.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.0 || ^9.0",
diff --git a/samples/client/petstore/php/OpenAPIClient-php/lib/ObjectSerializer.php b/samples/client/petstore/php/OpenAPIClient-php/lib/ObjectSerializer.php
index d47a752809e..840e4d93414 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/lib/ObjectSerializer.php
+++ b/samples/client/petstore/php/OpenAPIClient-php/lib/ObjectSerializer.php
@@ -129,6 +129,20 @@ class ObjectSerializer
         }
     }
 
+    /**
+     * Shorter timestamp microseconds to 6 digits length.
+     *
+     * @param string $timestamp Original timestamp
+     *
+     * @return string the shorten timestamp
+     */
+    public static function sanitizeTimestamp($timestamp)
+    {
+        if (!is_string($timestamp)) return $timestamp;
+
+        return preg_replace('/(:\d{2}.\d{6})\d*/', '$1', $timestamp);
+    }
+
     /**
      * Take value and turn it into a string suitable for inclusion in
      * the path, by url-encoding.
@@ -322,10 +336,9 @@ class ObjectSerializer
                     return new \DateTime($data);
                 } catch (\Exception $exception) {
                     // Some API's return a date-time with too high nanosecond
-                    // precision for php's DateTime to handle. This conversion
-                    // (string -> unix timestamp -> DateTime) is a workaround
-                    // for the problem.
-                    return (new \DateTime())->setTimestamp(strtotime($data));
+                    // precision for php's DateTime to handle.
+                    // With provided regexp 6 digits of microseconds saved
+                    return new \DateTime(self::sanitizeTimestamp($data));
                 }
             } else {
                 return null;
diff --git a/samples/client/petstore/php/OpenAPIClient-php/tests/ObjectSerializerTest.php b/samples/client/petstore/php/OpenAPIClient-php/tests/ObjectSerializerTest.php
index d7cc4a173f1..9c4e86d5bf1 100644
--- a/samples/client/petstore/php/OpenAPIClient-php/tests/ObjectSerializerTest.php
+++ b/samples/client/petstore/php/OpenAPIClient-php/tests/ObjectSerializerTest.php
@@ -64,4 +64,66 @@ class ObjectSerializerTest extends TestCase
             ],
         ];
     }
+
+    /**
+     * @covers ObjectSerializer::sanitizeTimestamp
+     * @dataProvider provideTimestamps
+     */
+    public function testSanitizeTimestamp(string $timestamp, string $expected): void
+    {
+        $this->assertEquals($expected, ObjectSerializer::sanitizeTimestamp($timestamp));
+    }
+
+    /**
+     * Test datetime deserialization.
+     *
+     * @covers ObjectSerializer::deserialize
+     * @dataProvider provideTimestamps
+     *
+     * @see https://github.com/OpenAPITools/openapi-generator/issues/7942
+     * @see https://github.com/OpenAPITools/openapi-generator/issues/10548
+     */
+    public function testDateTimeParseSecondAccuracy(string $timestamp, string $expected): void
+    {
+        $dateTime = ObjectSerializer::deserialize($timestamp, '\DateTime');
+        $this->assertEquals(new \DateTime($expected), $dateTime);
+    }
+
+    public function provideTimestamps(): array
+    {
+        return [
+            'String from #7942' => [
+                '2020-11-11T15:17:58.868722633Z',
+                '2020-11-11T15:17:58.868722Z',
+            ],
+            'String from #10548' => [
+                '2021-10-06T20:17:16.076372256Z',
+                '2021-10-06T20:17:16.076372Z',
+            ],
+            'Without timezone' => [
+                '2021-10-06T20:17:16.076372256',
+                '2021-10-06T20:17:16.076372',
+            ],
+            'Without microseconds' => [
+                '2021-10-06T20:17:16',
+                '2021-10-06T20:17:16',
+            ],
+            'Without microseconds with timezone' => [
+                '2021-10-06T20:17:16Z',
+                '2021-10-06T20:17:16Z',
+            ],
+            'With numeric timezone' => [
+                '2021-10-06T20:17:16.076372256+03:00',
+                '2021-10-06T20:17:16.076372+03:00',
+            ],
+            'With numeric timezone without delimiter' => [
+                '2021-10-06T20:17:16.076372256+0300',
+                '2021-10-06T20:17:16.076372+0300',
+            ],
+            'With numeric short timezone' => [
+                '2021-10-06T20:17:16.076372256+03',
+                '2021-10-06T20:17:16.076372+03',
+            ],
+        ];
+    }
 }
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api/another_fake_api.py b/samples/client/petstore/python-asyncio/petstore_api/api/another_fake_api.py
index b76ee3b916c..17c46b6ac4c 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api/another_fake_api.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api/another_fake_api.py
@@ -114,7 +114,8 @@ class AnotherFakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class AnotherFakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api/fake_api.py b/samples/client/petstore/python-asyncio/petstore_api/api/fake_api.py
index b97f43f60f9..44636a1a022 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api/fake_api.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api/fake_api.py
@@ -114,7 +114,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -251,7 +252,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -270,7 +272,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -384,7 +386,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -403,7 +406,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -517,7 +520,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -536,7 +540,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -650,7 +654,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -669,7 +674,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -783,7 +788,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -806,7 +812,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -923,7 +929,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -952,7 +959,7 @@ class FakeApi(object):
         if 'query' in local_var_params and local_var_params['query'] is not None:  # noqa: E501
             query_params.append(('query', local_var_params['query']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1066,7 +1073,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1089,7 +1097,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1274,7 +1282,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1337,7 +1346,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1512,7 +1521,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1540,7 +1550,7 @@ class FakeApi(object):
         if 'enum_query_double' in local_var_params and local_var_params['enum_query_double'] is not None:  # noqa: E501
             query_params.append(('enum_query_double', local_var_params['enum_query_double']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'enum_header_string_array' in local_var_params:
             header_params['enum_header_string_array'] = local_var_params['enum_header_string_array']  # noqa: E501
             collection_formats['enum_header_string_array'] = 'csv'  # noqa: E501
@@ -1687,7 +1697,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1726,7 +1737,7 @@ class FakeApi(object):
         if 'int64_group' in local_var_params and local_var_params['int64_group'] is not None:  # noqa: E501
             query_params.append(('int64_group', local_var_params['int64_group']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'required_boolean_group' in local_var_params:
             header_params['required_boolean_group'] = local_var_params['required_boolean_group']  # noqa: E501
         if 'boolean_group' in local_var_params:
@@ -1834,7 +1845,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1857,7 +1869,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1974,7 +1986,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2001,7 +2014,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -2137,7 +2150,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2191,7 +2205,7 @@ class FakeApi(object):
             query_params.append(('context', local_var_params['context']))  # noqa: E501
             collection_formats['context'] = 'multi'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api/fake_classname_tags_123_api.py b/samples/client/petstore/python-asyncio/petstore_api/api/fake_classname_tags_123_api.py
index 2b46147fed5..b5cd8cd22c9 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api/fake_classname_tags_123_api.py
@@ -114,7 +114,8 @@ class FakeClassnameTags123Api(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeClassnameTags123Api(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api/pet_api.py b/samples/client/petstore/python-asyncio/petstore_api/api/pet_api.py
index e20e57a7f86..59c3b238c1c 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api/pet_api.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api/pet_api.py
@@ -112,7 +112,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -135,7 +136,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -252,7 +253,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -277,7 +279,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'api_key' in local_var_params:
             header_params['api_key'] = local_var_params['api_key']  # noqa: E501
 
@@ -385,7 +387,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -411,7 +414,7 @@ class PetApi(object):
             query_params.append(('status', local_var_params['status']))  # noqa: E501
             collection_formats['status'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -524,7 +527,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -550,7 +554,7 @@ class PetApi(object):
             query_params.append(('tags', local_var_params['tags']))  # noqa: E501
             collection_formats['tags'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -663,7 +667,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -688,7 +693,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -800,7 +805,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -823,7 +829,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -945,7 +951,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -970,7 +977,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1094,7 +1101,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1119,7 +1127,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1249,7 +1257,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1278,7 +1287,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api/store_api.py b/samples/client/petstore/python-asyncio/petstore_api/api/store_api.py
index 4425692aec0..93566fdb1d6 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api/store_api.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api/store_api.py
@@ -114,7 +114,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -139,7 +140,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -240,7 +241,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -259,7 +261,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -371,7 +373,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -400,7 +403,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -512,7 +515,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -535,7 +539,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api/user_api.py b/samples/client/petstore/python-asyncio/petstore_api/api/user_api.py
index 593e5e5856b..550d852e0c2 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api/user_api.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api/user_api.py
@@ -114,7 +114,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -243,7 +244,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -266,7 +268,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -372,7 +374,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -395,7 +398,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -503,7 +506,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -528,7 +532,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -632,7 +636,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -657,7 +662,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -774,7 +779,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -805,7 +811,7 @@ class UserApi(object):
         if 'password' in local_var_params and local_var_params['password'] is not None:  # noqa: E501
             query_params.append(('password', local_var_params['password']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -911,7 +917,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -930,7 +937,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1041,7 +1048,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1070,7 +1078,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-asyncio/petstore_api/rest.py b/samples/client/petstore/python-asyncio/petstore_api/rest.py
index 75ee140efba..263fe1daafb 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/rest.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/rest.py
@@ -70,7 +70,8 @@ class RESTClientObject(object):
 
         # https pool manager
         self.pool_manager = aiohttp.ClientSession(
-            connector=connector
+            connector=connector,
+            trust_env=True
         )
 
     async def close(self):
diff --git a/samples/client/petstore/python-asyncio/setup.py b/samples/client/petstore/python-asyncio/setup.py
index b9fc72e727f..974fea3373f 100644
--- a/samples/client/petstore/python-asyncio/setup.py
+++ b/samples/client/petstore/python-asyncio/setup.py
@@ -36,6 +36,7 @@ setup(
     packages=find_packages(exclude=["test", "tests"]),
     include_package_data=True,
     license="Apache-2.0",
+    long_description_content_type='text/markdown',
     long_description="""\
     This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\  # noqa: E501
     """
diff --git a/samples/client/petstore/python-legacy/petstore_api/api/another_fake_api.py b/samples/client/petstore/python-legacy/petstore_api/api/another_fake_api.py
index b76ee3b916c..17c46b6ac4c 100644
--- a/samples/client/petstore/python-legacy/petstore_api/api/another_fake_api.py
+++ b/samples/client/petstore/python-legacy/petstore_api/api/another_fake_api.py
@@ -114,7 +114,8 @@ class AnotherFakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class AnotherFakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-legacy/petstore_api/api/fake_api.py b/samples/client/petstore/python-legacy/petstore_api/api/fake_api.py
index b97f43f60f9..44636a1a022 100644
--- a/samples/client/petstore/python-legacy/petstore_api/api/fake_api.py
+++ b/samples/client/petstore/python-legacy/petstore_api/api/fake_api.py
@@ -114,7 +114,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -251,7 +252,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -270,7 +272,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -384,7 +386,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -403,7 +406,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -517,7 +520,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -536,7 +540,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -650,7 +654,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -669,7 +674,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -783,7 +788,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -806,7 +812,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -923,7 +929,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -952,7 +959,7 @@ class FakeApi(object):
         if 'query' in local_var_params and local_var_params['query'] is not None:  # noqa: E501
             query_params.append(('query', local_var_params['query']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1066,7 +1073,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1089,7 +1097,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1274,7 +1282,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1337,7 +1346,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1512,7 +1521,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1540,7 +1550,7 @@ class FakeApi(object):
         if 'enum_query_double' in local_var_params and local_var_params['enum_query_double'] is not None:  # noqa: E501
             query_params.append(('enum_query_double', local_var_params['enum_query_double']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'enum_header_string_array' in local_var_params:
             header_params['enum_header_string_array'] = local_var_params['enum_header_string_array']  # noqa: E501
             collection_formats['enum_header_string_array'] = 'csv'  # noqa: E501
@@ -1687,7 +1697,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1726,7 +1737,7 @@ class FakeApi(object):
         if 'int64_group' in local_var_params and local_var_params['int64_group'] is not None:  # noqa: E501
             query_params.append(('int64_group', local_var_params['int64_group']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'required_boolean_group' in local_var_params:
             header_params['required_boolean_group'] = local_var_params['required_boolean_group']  # noqa: E501
         if 'boolean_group' in local_var_params:
@@ -1834,7 +1845,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1857,7 +1869,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1974,7 +1986,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2001,7 +2014,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -2137,7 +2150,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2191,7 +2205,7 @@ class FakeApi(object):
             query_params.append(('context', local_var_params['context']))  # noqa: E501
             collection_formats['context'] = 'multi'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py b/samples/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py
index 2b46147fed5..b5cd8cd22c9 100644
--- a/samples/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py
@@ -114,7 +114,8 @@ class FakeClassnameTags123Api(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeClassnameTags123Api(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-legacy/petstore_api/api/pet_api.py b/samples/client/petstore/python-legacy/petstore_api/api/pet_api.py
index e20e57a7f86..59c3b238c1c 100644
--- a/samples/client/petstore/python-legacy/petstore_api/api/pet_api.py
+++ b/samples/client/petstore/python-legacy/petstore_api/api/pet_api.py
@@ -112,7 +112,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -135,7 +136,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -252,7 +253,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -277,7 +279,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'api_key' in local_var_params:
             header_params['api_key'] = local_var_params['api_key']  # noqa: E501
 
@@ -385,7 +387,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -411,7 +414,7 @@ class PetApi(object):
             query_params.append(('status', local_var_params['status']))  # noqa: E501
             collection_formats['status'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -524,7 +527,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -550,7 +554,7 @@ class PetApi(object):
             query_params.append(('tags', local_var_params['tags']))  # noqa: E501
             collection_formats['tags'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -663,7 +667,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -688,7 +693,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -800,7 +805,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -823,7 +829,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -945,7 +951,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -970,7 +977,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1094,7 +1101,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1119,7 +1127,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1249,7 +1257,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1278,7 +1287,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-legacy/petstore_api/api/store_api.py b/samples/client/petstore/python-legacy/petstore_api/api/store_api.py
index 4425692aec0..93566fdb1d6 100644
--- a/samples/client/petstore/python-legacy/petstore_api/api/store_api.py
+++ b/samples/client/petstore/python-legacy/petstore_api/api/store_api.py
@@ -114,7 +114,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -139,7 +140,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -240,7 +241,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -259,7 +261,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -371,7 +373,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -400,7 +403,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -512,7 +515,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -535,7 +539,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-legacy/petstore_api/api/user_api.py b/samples/client/petstore/python-legacy/petstore_api/api/user_api.py
index 593e5e5856b..550d852e0c2 100644
--- a/samples/client/petstore/python-legacy/petstore_api/api/user_api.py
+++ b/samples/client/petstore/python-legacy/petstore_api/api/user_api.py
@@ -114,7 +114,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -243,7 +244,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -266,7 +268,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -372,7 +374,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -395,7 +398,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -503,7 +506,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -528,7 +532,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -632,7 +636,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -657,7 +662,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -774,7 +779,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -805,7 +811,7 @@ class UserApi(object):
         if 'password' in local_var_params and local_var_params['password'] is not None:  # noqa: E501
             query_params.append(('password', local_var_params['password']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -911,7 +917,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -930,7 +937,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1041,7 +1048,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1070,7 +1078,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-legacy/setup.py b/samples/client/petstore/python-legacy/setup.py
index 217134e7947..58abfa11b8d 100644
--- a/samples/client/petstore/python-legacy/setup.py
+++ b/samples/client/petstore/python-legacy/setup.py
@@ -35,6 +35,7 @@ setup(
     packages=find_packages(exclude=["test", "tests"]),
     include_package_data=True,
     license="Apache-2.0",
+    long_description_content_type='text/markdown',
     long_description="""\
     This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\  # noqa: E501
     """
diff --git a/samples/client/petstore/python-tornado/petstore_api/api/another_fake_api.py b/samples/client/petstore/python-tornado/petstore_api/api/another_fake_api.py
index b76ee3b916c..17c46b6ac4c 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api/another_fake_api.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api/another_fake_api.py
@@ -114,7 +114,8 @@ class AnotherFakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class AnotherFakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-tornado/petstore_api/api/fake_api.py b/samples/client/petstore/python-tornado/petstore_api/api/fake_api.py
index b97f43f60f9..44636a1a022 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api/fake_api.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api/fake_api.py
@@ -114,7 +114,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -251,7 +252,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -270,7 +272,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -384,7 +386,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -403,7 +406,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -517,7 +520,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -536,7 +540,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -650,7 +654,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -669,7 +674,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -783,7 +788,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -806,7 +812,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -923,7 +929,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -952,7 +959,7 @@ class FakeApi(object):
         if 'query' in local_var_params and local_var_params['query'] is not None:  # noqa: E501
             query_params.append(('query', local_var_params['query']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1066,7 +1073,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1089,7 +1097,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1274,7 +1282,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1337,7 +1346,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1512,7 +1521,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1540,7 +1550,7 @@ class FakeApi(object):
         if 'enum_query_double' in local_var_params and local_var_params['enum_query_double'] is not None:  # noqa: E501
             query_params.append(('enum_query_double', local_var_params['enum_query_double']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'enum_header_string_array' in local_var_params:
             header_params['enum_header_string_array'] = local_var_params['enum_header_string_array']  # noqa: E501
             collection_formats['enum_header_string_array'] = 'csv'  # noqa: E501
@@ -1687,7 +1697,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1726,7 +1737,7 @@ class FakeApi(object):
         if 'int64_group' in local_var_params and local_var_params['int64_group'] is not None:  # noqa: E501
             query_params.append(('int64_group', local_var_params['int64_group']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'required_boolean_group' in local_var_params:
             header_params['required_boolean_group'] = local_var_params['required_boolean_group']  # noqa: E501
         if 'boolean_group' in local_var_params:
@@ -1834,7 +1845,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1857,7 +1869,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1974,7 +1986,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2001,7 +2014,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -2137,7 +2150,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2191,7 +2205,7 @@ class FakeApi(object):
             query_params.append(('context', local_var_params['context']))  # noqa: E501
             collection_formats['context'] = 'multi'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-tornado/petstore_api/api/fake_classname_tags_123_api.py b/samples/client/petstore/python-tornado/petstore_api/api/fake_classname_tags_123_api.py
index 2b46147fed5..b5cd8cd22c9 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api/fake_classname_tags_123_api.py
@@ -114,7 +114,8 @@ class FakeClassnameTags123Api(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeClassnameTags123Api(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-tornado/petstore_api/api/pet_api.py b/samples/client/petstore/python-tornado/petstore_api/api/pet_api.py
index e20e57a7f86..59c3b238c1c 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api/pet_api.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api/pet_api.py
@@ -112,7 +112,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -135,7 +136,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -252,7 +253,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -277,7 +279,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'api_key' in local_var_params:
             header_params['api_key'] = local_var_params['api_key']  # noqa: E501
 
@@ -385,7 +387,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -411,7 +414,7 @@ class PetApi(object):
             query_params.append(('status', local_var_params['status']))  # noqa: E501
             collection_formats['status'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -524,7 +527,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -550,7 +554,7 @@ class PetApi(object):
             query_params.append(('tags', local_var_params['tags']))  # noqa: E501
             collection_formats['tags'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -663,7 +667,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -688,7 +693,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -800,7 +805,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -823,7 +829,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -945,7 +951,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -970,7 +977,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1094,7 +1101,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1119,7 +1127,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1249,7 +1257,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1278,7 +1287,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-tornado/petstore_api/api/store_api.py b/samples/client/petstore/python-tornado/petstore_api/api/store_api.py
index 4425692aec0..93566fdb1d6 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api/store_api.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api/store_api.py
@@ -114,7 +114,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -139,7 +140,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -240,7 +241,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -259,7 +261,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -371,7 +373,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -400,7 +403,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -512,7 +515,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -535,7 +539,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-tornado/petstore_api/api/user_api.py b/samples/client/petstore/python-tornado/petstore_api/api/user_api.py
index 593e5e5856b..550d852e0c2 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api/user_api.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api/user_api.py
@@ -114,7 +114,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -243,7 +244,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -266,7 +268,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -372,7 +374,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -395,7 +398,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -503,7 +506,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -528,7 +532,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -632,7 +636,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -657,7 +662,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -774,7 +779,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -805,7 +811,7 @@ class UserApi(object):
         if 'password' in local_var_params and local_var_params['password'] is not None:  # noqa: E501
             query_params.append(('password', local_var_params['password']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -911,7 +917,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -930,7 +937,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1041,7 +1048,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1070,7 +1078,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/client/petstore/python-tornado/setup.py b/samples/client/petstore/python-tornado/setup.py
index c6e7ddc51bf..db9d6f38025 100644
--- a/samples/client/petstore/python-tornado/setup.py
+++ b/samples/client/petstore/python-tornado/setup.py
@@ -36,6 +36,7 @@ setup(
     packages=find_packages(exclude=["test", "tests"]),
     include_package_data=True,
     license="Apache-2.0",
+    long_description_content_type='text/markdown',
     long_description="""\
     This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\  # noqa: E501
     """
diff --git a/samples/client/petstore/python/README.md b/samples/client/petstore/python/README.md
index 5f53c0f6423..8e57b995b3e 100644
--- a/samples/client/petstore/python/README.md
+++ b/samples/client/petstore/python/README.md
@@ -9,7 +9,7 @@ This Python package is automatically generated by the [OpenAPI Generator](https:
 
 ## Requirements.
 
-Python >= 3.6
+Python >=3.6
 
 ## Installation & Usage
 ### pip install
diff --git a/samples/client/petstore/python/petstore_api/api/another_fake_api.py b/samples/client/petstore/python/petstore_api/api/another_fake_api.py
index 1411f08cbc1..093a4ca6a33 100644
--- a/samples/client/petstore/python/petstore_api/api/another_fake_api.py
+++ b/samples/client/petstore/python/petstore_api/api/another_fake_api.py
@@ -119,6 +119,10 @@ class AnotherFakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -150,6 +154,9 @@ class AnotherFakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python/petstore_api/api/fake_api.py b/samples/client/petstore/python/petstore_api/api/fake_api.py
index a21d5838f41..f630549347f 100644
--- a/samples/client/petstore/python/petstore_api/api/fake_api.py
+++ b/samples/client/petstore/python/petstore_api/api/fake_api.py
@@ -1132,6 +1132,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1163,6 +1167,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1199,6 +1206,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1230,6 +1241,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1268,6 +1282,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1299,6 +1317,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1337,6 +1358,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1368,6 +1393,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1404,6 +1432,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1435,6 +1467,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1471,6 +1506,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1502,6 +1541,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1538,6 +1580,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1569,6 +1615,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1607,6 +1656,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1638,6 +1691,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1679,6 +1735,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1710,6 +1770,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1752,6 +1815,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1783,6 +1850,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1831,6 +1901,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1862,6 +1936,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1926,6 +2003,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1957,6 +2038,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2008,6 +2092,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2039,6 +2127,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2084,6 +2175,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2115,6 +2210,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2158,6 +2256,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2189,6 +2291,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2230,6 +2335,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2261,6 +2370,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py b/samples/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py
index 76e35824fbe..70b4a535a81 100644
--- a/samples/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py
@@ -121,6 +121,10 @@ class FakeClassnameTags123Api(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -152,6 +156,9 @@ class FakeClassnameTags123Api(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python/petstore_api/api/pet_api.py b/samples/client/petstore/python/petstore_api/api/pet_api.py
index 13fb1d981f4..290bf04cf1e 100644
--- a/samples/client/petstore/python/petstore_api/api/pet_api.py
+++ b/samples/client/petstore/python/petstore_api/api/pet_api.py
@@ -584,6 +584,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -615,6 +619,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -655,6 +662,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -686,6 +697,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -726,6 +740,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -757,6 +775,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -797,6 +818,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -828,6 +853,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -868,6 +896,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -899,6 +931,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -938,6 +973,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -969,6 +1008,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1010,6 +1052,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1041,6 +1087,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1083,6 +1132,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1114,6 +1167,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1156,6 +1212,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1187,6 +1247,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python/petstore_api/api/store_api.py b/samples/client/petstore/python/petstore_api/api/store_api.py
index 934c5525999..a1172b1f10e 100644
--- a/samples/client/petstore/python/petstore_api/api/store_api.py
+++ b/samples/client/petstore/python/petstore_api/api/store_api.py
@@ -265,6 +265,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -296,6 +300,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -333,6 +340,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -364,6 +375,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -402,6 +416,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -433,6 +451,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -472,6 +493,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -503,6 +528,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python/petstore_api/api/user_api.py b/samples/client/petstore/python/petstore_api/api/user_api.py
index 78cc2f4a8b6..6eabc2a0a01 100644
--- a/samples/client/petstore/python/petstore_api/api/user_api.py
+++ b/samples/client/petstore/python/petstore_api/api/user_api.py
@@ -452,6 +452,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -483,6 +487,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -522,6 +529,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -553,6 +564,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -592,6 +606,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -623,6 +641,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -663,6 +684,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -694,6 +719,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -733,6 +761,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -764,6 +796,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -805,6 +840,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -836,6 +875,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -874,6 +916,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -905,6 +951,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -945,6 +994,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -976,6 +1029,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python/petstore_api/api_client.py b/samples/client/petstore/python/petstore_api/api_client.py
index 7b4eea830ea..664cf1c917b 100644
--- a/samples/client/petstore/python/petstore_api/api_client.py
+++ b/samples/client/petstore/python/petstore_api/api_client.py
@@ -673,7 +673,8 @@ class Endpoint(object):
             '_return_http_data_only',
             '_check_input_type',
             '_check_return_type',
-            '_content_type'
+            '_content_type',
+            '_spec_property_naming'
         ])
         self.params_map['nullable'].extend(['_request_timeout'])
         self.validations = root_map['validations']
@@ -687,6 +688,7 @@ class Endpoint(object):
             '_return_http_data_only': (bool,),
             '_check_input_type': (bool,),
             '_check_return_type': (bool,),
+            '_spec_property_naming': (bool,),
             '_content_type': (none_type, str)
         }
         self.openapi_types.update(extra_types)
@@ -723,7 +725,7 @@ class Endpoint(object):
                 value,
                 self.openapi_types[key],
                 [key],
-                False,
+                kwargs['_spec_property_naming'],
                 kwargs['_check_input_type'],
                 configuration=self.api_client.configuration
             )
@@ -751,11 +753,11 @@ class Endpoint(object):
                 base_name = self.attribute_map[param_name]
                 if (param_location == 'form' and
                         self.openapi_types[param_name] == (file_type,)):
-                    params['file'][param_name] = [param_value]
+                    params['file'][base_name] = [param_value]
                 elif (param_location == 'form' and
                         self.openapi_types[param_name] == ([file_type],)):
                     # param_value is already a list
-                    params['file'][param_name] = param_value
+                    params['file'][base_name] = param_value
                 elif param_location in {'form', 'query'}:
                     param_value_full = (base_name, param_value)
                     params[param_location].append(param_value_full)
diff --git a/samples/client/petstore/python/petstore_api/model_utils.py b/samples/client/petstore/python/petstore_api/model_utils.py
index c723626fc49..6414688b772 100644
--- a/samples/client/petstore/python/petstore_api/model_utils.py
+++ b/samples/client/petstore/python/petstore_api/model_utils.py
@@ -1657,6 +1657,7 @@ def model_to_dict(model_instance, serialize=True):
             attribute_map
     """
     result = {}
+    extract_item = lambda item: (item[0], model_to_dict(item[1], serialize=serialize)) if hasattr(item[1], '_data_store') else item
 
     model_instances = [model_instance]
     if model_instance._composed_schemas:
@@ -1686,14 +1687,17 @@ def model_to_dict(model_instance, serialize=True):
                            res.append(v)
                        elif isinstance(v, ModelSimple):
                            res.append(v.value)
+                       elif isinstance(v, dict):
+                           res.append(dict(map(
+                               extract_item,
+                               v.items()
+                           )))
                        else:
                            res.append(model_to_dict(v, serialize=serialize))
                    result[attr] = res
             elif isinstance(value, dict):
                 result[attr] = dict(map(
-                    lambda item: (item[0],
-                                  model_to_dict(item[1], serialize=serialize))
-                    if hasattr(item[1], '_data_store') else item,
+                    extract_item,
                     value.items()
                 ))
             elif isinstance(value, ModelSimple):
diff --git a/samples/client/petstore/python/test/test_fake_api.py b/samples/client/petstore/python/test/test_fake_api.py
index c8345a8760a..d17375a994d 100644
--- a/samples/client/petstore/python/test/test_fake_api.py
+++ b/samples/client/petstore/python/test/test_fake_api.py
@@ -126,6 +126,7 @@ class TestFakeApi(unittest.TestCase):
                 _preload_content=True,
                 _request_timeout=None,
                 _return_http_data_only=True,
+                _spec_property_naming=False,
                 async_req=False,
                 header_number=1.234,
                 path_integer=34,
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/README.md b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/README.md
index 5f53c0f6423..8e57b995b3e 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/README.md
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/README.md
@@ -9,7 +9,7 @@ This Python package is automatically generated by the [OpenAPI Generator](https:
 
 ## Requirements.
 
-Python >= 3.6
+Python >=3.6
 
 ## Installation & Usage
 ### pip install
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/another_fake_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/another_fake_api.py
index 1411f08cbc1..093a4ca6a33 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/another_fake_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/another_fake_api.py
@@ -119,6 +119,10 @@ class AnotherFakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -150,6 +154,9 @@ class AnotherFakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_api.py
index a21d5838f41..f630549347f 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_api.py
@@ -1132,6 +1132,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1163,6 +1167,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1199,6 +1206,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1230,6 +1241,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1268,6 +1282,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1299,6 +1317,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1337,6 +1358,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1368,6 +1393,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1404,6 +1432,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1435,6 +1467,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1471,6 +1506,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1502,6 +1541,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1538,6 +1580,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1569,6 +1615,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1607,6 +1656,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1638,6 +1691,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1679,6 +1735,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1710,6 +1770,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1752,6 +1815,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1783,6 +1850,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1831,6 +1901,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1862,6 +1936,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1926,6 +2003,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1957,6 +2038,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2008,6 +2092,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2039,6 +2127,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2084,6 +2175,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2115,6 +2210,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2158,6 +2256,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2189,6 +2291,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2230,6 +2335,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2261,6 +2370,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_classname_tags_123_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_classname_tags_123_api.py
index 76e35824fbe..70b4a535a81 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/fake_classname_tags_123_api.py
@@ -121,6 +121,10 @@ class FakeClassnameTags123Api(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -152,6 +156,9 @@ class FakeClassnameTags123Api(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/pet_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/pet_api.py
index 13fb1d981f4..290bf04cf1e 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/pet_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/pet_api.py
@@ -584,6 +584,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -615,6 +619,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -655,6 +662,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -686,6 +697,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -726,6 +740,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -757,6 +775,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -797,6 +818,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -828,6 +853,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -868,6 +896,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -899,6 +931,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -938,6 +973,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -969,6 +1008,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1010,6 +1052,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1041,6 +1087,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1083,6 +1132,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1114,6 +1167,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1156,6 +1212,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1187,6 +1247,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/store_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/store_api.py
index 934c5525999..a1172b1f10e 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/store_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/store_api.py
@@ -265,6 +265,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -296,6 +300,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -333,6 +340,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -364,6 +375,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -402,6 +416,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -433,6 +451,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -472,6 +493,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -503,6 +528,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/user_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/user_api.py
index 78cc2f4a8b6..6eabc2a0a01 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/user_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api/user_api.py
@@ -452,6 +452,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -483,6 +487,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -522,6 +529,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -553,6 +564,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -592,6 +606,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -623,6 +641,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -663,6 +684,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -694,6 +719,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -733,6 +761,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -764,6 +796,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -805,6 +840,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -836,6 +875,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -874,6 +916,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -905,6 +951,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -945,6 +994,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -976,6 +1029,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py
index 7b4eea830ea..664cf1c917b 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py
@@ -673,7 +673,8 @@ class Endpoint(object):
             '_return_http_data_only',
             '_check_input_type',
             '_check_return_type',
-            '_content_type'
+            '_content_type',
+            '_spec_property_naming'
         ])
         self.params_map['nullable'].extend(['_request_timeout'])
         self.validations = root_map['validations']
@@ -687,6 +688,7 @@ class Endpoint(object):
             '_return_http_data_only': (bool,),
             '_check_input_type': (bool,),
             '_check_return_type': (bool,),
+            '_spec_property_naming': (bool,),
             '_content_type': (none_type, str)
         }
         self.openapi_types.update(extra_types)
@@ -723,7 +725,7 @@ class Endpoint(object):
                 value,
                 self.openapi_types[key],
                 [key],
-                False,
+                kwargs['_spec_property_naming'],
                 kwargs['_check_input_type'],
                 configuration=self.api_client.configuration
             )
@@ -751,11 +753,11 @@ class Endpoint(object):
                 base_name = self.attribute_map[param_name]
                 if (param_location == 'form' and
                         self.openapi_types[param_name] == (file_type,)):
-                    params['file'][param_name] = [param_value]
+                    params['file'][base_name] = [param_value]
                 elif (param_location == 'form' and
                         self.openapi_types[param_name] == ([file_type],)):
                     # param_value is already a list
-                    params['file'][param_name] = param_value
+                    params['file'][base_name] = param_value
                 elif param_location in {'form', 'query'}:
                     param_value_full = (base_name, param_value)
                     params[param_location].append(param_value_full)
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/model_utils.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/model_utils.py
index c723626fc49..6414688b772 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/model_utils.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/model_utils.py
@@ -1657,6 +1657,7 @@ def model_to_dict(model_instance, serialize=True):
             attribute_map
     """
     result = {}
+    extract_item = lambda item: (item[0], model_to_dict(item[1], serialize=serialize)) if hasattr(item[1], '_data_store') else item
 
     model_instances = [model_instance]
     if model_instance._composed_schemas:
@@ -1686,14 +1687,17 @@ def model_to_dict(model_instance, serialize=True):
                            res.append(v)
                        elif isinstance(v, ModelSimple):
                            res.append(v.value)
+                       elif isinstance(v, dict):
+                           res.append(dict(map(
+                               extract_item,
+                               v.items()
+                           )))
                        else:
                            res.append(model_to_dict(v, serialize=serialize))
                    result[attr] = res
             elif isinstance(value, dict):
                 result[attr] = dict(map(
-                    lambda item: (item[0],
-                                  model_to_dict(item[1], serialize=serialize))
-                    if hasattr(item[1], '_data_store') else item,
+                    extract_item,
                     value.items()
                 ))
             elif isinstance(value, ModelSimple):
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/test/test_fake_api.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/test/test_fake_api.py
index c8345a8760a..d17375a994d 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/test/test_fake_api.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/test/test_fake_api.py
@@ -126,6 +126,7 @@ class TestFakeApi(unittest.TestCase):
                 _preload_content=True,
                 _request_timeout=None,
                 _return_http_data_only=True,
+                _spec_property_naming=False,
                 async_req=False,
                 header_number=1.234,
                 path_integer=34,
diff --git a/samples/client/petstore/spring-cloud-async/pom.xml b/samples/client/petstore/spring-cloud-async/pom.xml
index 6b400a3539f..d542d02ebc7 100644
--- a/samples/client/petstore/spring-cloud-async/pom.xml
+++ b/samples/client/petstore/spring-cloud-async/pom.xml
@@ -9,7 +9,6 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>1.6.3</swagger-core-version>
         <springfox.version>2.9.2</springfox.version>
     </properties>
     <parent>
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java
index 91ee30f66ad..e37129c90e2 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -22,7 +23,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Pet", description = "the Pet API")
 public interface PetApi {
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java
index 064c2e04fcc..99070ab2aeb 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java
@@ -22,7 +22,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Store", description = "the Store API")
 public interface StoreApi {
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java
index d8ac4e40ef0..cc4826d5cd9 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java
@@ -23,7 +23,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "User", description = "the User API")
 public interface UserApi {
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java
index f21d835af4d..af9a5d3bbec 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
+
 @ApiModel(description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java
index ec1b1b81d6a..3ab8ad09cb6 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
+
 @ApiModel(description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -38,9 +41,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -58,9 +60,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -78,9 +79,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -89,7 +89,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +112,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java
index 2f24cd46851..658d0de7168 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,13 +16,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
+
 @ApiModel(description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -32,7 +36,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -87,9 +91,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -107,9 +110,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -127,9 +129,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -147,10 +148,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -168,9 +167,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -188,9 +186,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -199,7 +196,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -226,7 +222,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java
index a1f702f1a72..1c0c076a38c 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java
@@ -18,13 +18,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
+
 @ApiModel(description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -91,9 +94,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -111,10 +113,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -132,10 +132,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -158,10 +156,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -187,10 +183,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -208,9 +202,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -219,7 +212,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -246,7 +238,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java
index 8e3f6732233..86be70f2d3e 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
+
 @ApiModel(description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java
index 73fcf01b537..e350716a933 100644
--- a/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
+
 @ApiModel(description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -53,9 +56,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -73,9 +75,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -93,9 +94,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -113,9 +113,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -133,9 +132,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -153,9 +151,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -173,9 +170,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -193,9 +189,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -204,7 +199,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -233,7 +227,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-date-time/pom.xml b/samples/client/petstore/spring-cloud-date-time/pom.xml
index c01b2969fb3..36fac629b8d 100644
--- a/samples/client/petstore/spring-cloud-date-time/pom.xml
+++ b/samples/client/petstore/spring-cloud-date-time/pom.xml
@@ -9,7 +9,6 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>1.6.3</swagger-core-version>
         <springfox.version>2.9.2</springfox.version>
     </properties>
     <parent>
diff --git a/samples/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java b/samples/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java
index ecd5d0083e8..a5eceee230a 100644
--- a/samples/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java
+++ b/samples/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java
@@ -5,6 +5,7 @@
  */
 package org.openapitools.api;
 
+import org.springframework.format.annotation.DateTimeFormat;
 import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import io.swagger.annotations.*;
@@ -21,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Default", description = "the Default API")
 public interface DefaultApi {
@@ -49,10 +52,10 @@ public interface DefaultApi {
         value = "/thingy/{date}"
     )
     ResponseEntity<Void> get(
-        @ApiParam(value = "A date path parameter", required = true) @PathVariable("date") @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @NotNull @ApiParam(value = "A date-time query parameter", required = true) @Valid @RequestParam(value = "dateTime", required = true) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
-        @ApiParam(value = "A date header parameter", required = true) @RequestHeader(value = "X-Order-Date", required = true) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate xOrderDate,
-        @ApiParam(value = "A date cookie parameter") @CookieValue("loginDate") @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate loginDate
+        @ApiParam(value = "A date path parameter", required = true) @PathVariable("date") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @NotNull @ApiParam(value = "A date-time query parameter", required = true) @Valid @RequestParam(value = "dateTime", required = true) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "A date header parameter", required = true) @RequestHeader(value = "X-Order-Date", required = true) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate xOrderDate,
+        @ApiParam(value = "A date cookie parameter") @CookieValue("loginDate") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate loginDate
     );
 
 
@@ -79,8 +82,8 @@ public interface DefaultApi {
         consumes = "application/x-www-form-urlencoded"
     )
     ResponseEntity<Void> updatePetWithForm(
-        @ApiParam(value = "A date path parameter", required = true) @PathVariable("date") @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "Updated last vist timestamp") @RequestParam(value="visitDate", required=false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime visitDate
+        @ApiParam(value = "A date path parameter", required = true) @PathVariable("date") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "Updated last vist timestamp") @RequestParam(value="visitDate", required=false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime visitDate
     );
 
 }
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/pom.xml b/samples/client/petstore/spring-cloud-spring-pageable/pom.xml
index 622e4334036..d6f807b454e 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/pom.xml
+++ b/samples/client/petstore/spring-cloud-spring-pageable/pom.xml
@@ -9,7 +9,6 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>1.6.3</swagger-core-version>
         <springfox.version>2.9.2</springfox.version>
     </properties>
     <parent>
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
index 47a8e6a4d2e..c434f26d15e 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,11 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -21,7 +24,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Pet", description = "the Pet API")
 public interface PetApi {
@@ -122,7 +127,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     );
 
 
@@ -160,7 +165,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     );
 
 
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
index 5ed5ec1fd49..85958e4169c 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Store", description = "the Store API")
 public interface StoreApi {
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
index f4d08190bdf..21ecbd7628b 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "User", description = "the User API")
 public interface UserApi {
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java
index f21d835af4d..af9a5d3bbec 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
+
 @ApiModel(description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
index ec1b1b81d6a..3ab8ad09cb6 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
+
 @ApiModel(description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -38,9 +41,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -58,9 +60,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -78,9 +79,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -89,7 +89,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +112,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java
index 2f24cd46851..658d0de7168 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,13 +16,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
+
 @ApiModel(description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -32,7 +36,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -87,9 +91,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -107,9 +110,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -127,9 +129,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -147,10 +148,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -168,9 +167,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -188,9 +186,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -199,7 +196,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -226,7 +222,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java
index a1f702f1a72..1c0c076a38c 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java
@@ -18,13 +18,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
+
 @ApiModel(description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -91,9 +94,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -111,10 +113,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -132,10 +132,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -158,10 +156,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -187,10 +183,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -208,9 +202,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -219,7 +212,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -246,7 +238,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java
index 8e3f6732233..86be70f2d3e 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
+
 @ApiModel(description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java
index 73fcf01b537..e350716a933 100644
--- a/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
+
 @ApiModel(description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -53,9 +56,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -73,9 +75,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -93,9 +94,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -113,9 +113,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -133,9 +132,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -153,9 +151,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -173,9 +170,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -193,9 +189,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -204,7 +199,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -233,7 +227,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/client/petstore/spring-cloud/pom.xml b/samples/client/petstore/spring-cloud/pom.xml
index 6b400a3539f..d542d02ebc7 100644
--- a/samples/client/petstore/spring-cloud/pom.xml
+++ b/samples/client/petstore/spring-cloud/pom.xml
@@ -9,7 +9,6 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>1.6.3</swagger-core-version>
         <springfox.version>2.9.2</springfox.version>
     </properties>
     <parent>
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java
index a9d95755cd0..78c1a34893a 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -21,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Pet", description = "the Pet API")
 public interface PetApi {
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java
index fa08ad19313..2cafcdbced7 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "Store", description = "the Store API")
 public interface StoreApi {
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java
index 9cecbee3e00..44eb0c97b68 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "User", description = "the User API")
 public interface UserApi {
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java
index 26f5a6768a3..a34d3d59121 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
+
 @ApiModel(description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java
index ec1b1b81d6a..3ab8ad09cb6 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
+
 @ApiModel(description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -38,9 +41,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -58,9 +60,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -78,9 +79,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -89,7 +89,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +112,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java
index 2f24cd46851..658d0de7168 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,13 +16,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
+
 @ApiModel(description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -32,7 +36,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -87,9 +91,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -107,9 +110,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -127,9 +129,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -147,10 +148,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -168,9 +167,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -188,9 +186,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -199,7 +196,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -226,7 +222,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java
index a1f702f1a72..1c0c076a38c 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java
@@ -18,13 +18,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
+
 @ApiModel(description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -91,9 +94,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -111,10 +113,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -132,10 +132,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -158,10 +156,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -187,10 +183,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -208,9 +202,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -219,7 +212,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -246,7 +238,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java
index 8e3f6732233..86be70f2d3e 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
+
 @ApiModel(description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java
index 73fcf01b537..e350716a933 100644
--- a/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
+
 @ApiModel(description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -53,9 +56,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -73,9 +75,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -93,9 +94,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -113,9 +113,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -133,9 +132,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -153,9 +151,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -173,9 +170,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -193,9 +189,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -204,7 +199,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -233,7 +227,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java
index bbbf2a70eff..84fd6c89d89 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -21,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java
index 9b34d820eea..1e410b3ff8b 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java
index ce505560f76..df51793e879 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java
index f21d835af4d..af9a5d3bbec 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
+
 @ApiModel(description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java
index ec1b1b81d6a..3ab8ad09cb6 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
+
 @ApiModel(description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -38,9 +41,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -58,9 +60,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -78,9 +79,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -89,7 +89,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +112,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java
index 2f24cd46851..658d0de7168 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,13 +16,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
+
 @ApiModel(description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -32,7 +36,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -87,9 +91,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -107,9 +110,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -127,9 +129,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -147,10 +148,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -168,9 +167,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -188,9 +186,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -199,7 +196,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -226,7 +222,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java
index a1f702f1a72..1c0c076a38c 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java
@@ -18,13 +18,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
+
 @ApiModel(description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -91,9 +94,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -111,10 +113,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -132,10 +132,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -158,10 +156,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -187,10 +183,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -208,9 +202,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -219,7 +212,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -246,7 +238,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java
index 8e3f6732233..86be70f2d3e 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
+
 @ApiModel(description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -35,9 +38,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -55,9 +57,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +67,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java
index 73fcf01b537..e350716a933 100644
--- a/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java
+++ b/samples/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
+
 @ApiModel(description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -53,9 +56,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -73,9 +75,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -93,9 +94,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -113,9 +113,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -133,9 +132,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -153,9 +151,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -173,9 +170,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -193,9 +189,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -204,7 +199,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -233,7 +227,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/alamofireLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/asyncAwaitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/combineLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesAnyType.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesAnyType.swift
index 07dd0c38a1f..71141047347 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesAnyType.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesAnyType.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesAnyType: Codable, Hashable {
+public struct AdditionalPropertiesAnyType: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesArray.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesArray.swift
index 43a6d66cb59..e6b88a3f1d2 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesArray.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesArray.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesArray: Codable, Hashable {
+public struct AdditionalPropertiesArray: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesBoolean.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesBoolean.swift
index a2a20a926a1..a8b5930bdf2 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesBoolean.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesBoolean.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesBoolean: Codable, Hashable {
+public struct AdditionalPropertiesBoolean: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index eb6669c105a..674eec97cc4 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapNumber: [String: Double]?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesInteger.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesInteger.swift
index 0ccd9115bfd..a6661e776dd 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesInteger.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesInteger.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesInteger: Codable, Hashable {
+public struct AdditionalPropertiesInteger: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesNumber.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesNumber.swift
index 06987825557..676c6e7838d 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesNumber.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesNumber.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesNumber: Codable, Hashable {
+public struct AdditionalPropertiesNumber: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesObject.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesObject.swift
index 848a0983a3f..7480c9a65b5 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesObject.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesObject.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesObject: Codable, Hashable {
+public struct AdditionalPropertiesObject: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesString.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesString.swift
index 7b5bd40f70f..3f35bbf770c 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesString.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesString.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesString: Codable, Hashable {
+public struct AdditionalPropertiesString: Codable, JSONEncodable, Hashable {
 
     public var name: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCat.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCat.swift
index 4ca3454f9bd..6a01769ede3 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCat.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct BigCat: Codable, Hashable {
+public struct BigCat: Codable, JSONEncodable, Hashable {
 
     public enum Kind: String, Codable, CaseIterable {
         case lions = "lions"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCatAllOf.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCatAllOf.swift
index 8c6a92c8b48..24dcc39dfe2 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCatAllOf.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/BigCatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct BigCatAllOf: Codable, Hashable {
+public struct BigCatAllOf: Codable, JSONEncodable, Hashable {
 
     public enum Kind: String, Codable, CaseIterable {
         case lions = "lions"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index e880b792bbe..80ac2aeaf8b 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String = "default-name"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index 5dccf04e1e1..2892d53a3b6 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index a28f46a33ce..a4ba4255e0c 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: Int?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index f3a1bc92289..abd848e5836 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 23343c3c393..1a37683324d 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/XmlItem.swift b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/XmlItem.swift
index ae43cd28692..84b13d99b5f 100644
--- a/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/XmlItem.swift
+++ b/samples/client/petstore/swift5/default/PetstoreClient/Classes/OpenAPIs/Models/XmlItem.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct XmlItem: Codable, Hashable {
+public struct XmlItem: Codable, JSONEncodable, Hashable {
 
     public var attributeString: String?
     public var attributeNumber: Double?
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index ff77211ec29..d272a225436 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Describes the result of uploading an image resource */
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 0036cc7a857..d92169c4bc5 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** A category for a pet */
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index ccd3bea0249..3471c82ef95 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -12,7 +12,7 @@ import AnyCodable
 
 /** An order for a pets from the pet store */
 @available(*, deprecated, message: "This schema is deprecated.")
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index 047967197a7..345cbbfa49f 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** A pet for sale in the pet store */
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 555a33e6a18..c50903998f1 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** A tag for a pet */
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 4d8eeffdbf8..f0b4a0d362a 100644
--- a/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/deprecated/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** A User who is purchasing from the pet store */
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index e41babad70f..6c945fc2047 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable, CaseIterableDefaultsLast {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 72eaac6069a..58c1b4665dd 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable, CaseIterableDefaultsLast {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index fcae4e7e937..42728d2a308 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable, CaseIterableDefaultsLast {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index 57c1c4f866e..daaada5d4e8 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable, CaseIterableDefaultsLast {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index a0e8a03c82b..04512ffe4ba 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable, CaseIterableDefaultsLast {
         case available = "available"
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/frozenEnums/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index 255ab49db7b..c2bbbb3af6b 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 731b7b76eb6..da4e9163325 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct AdditionalPropertiesClass: Codable, Hashable {
+internal struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     internal var mapString: [String: String]?
     internal var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index b160f8c835d..0ce2b123708 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Animal: Codable, Hashable {
+internal struct Animal: Codable, JSONEncodable, Hashable {
 
     internal var className: String
     internal var color: String? = "red"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c62ce400c81..529c0085997 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct ApiResponse: Codable, Hashable {
+internal struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     internal var code: Int?
     internal var type: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 2fa5da894c4..671efcb4efe 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+internal struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     internal var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 4ad2ff35d21..82f41544ff1 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct ArrayOfNumberOnly: Codable, Hashable {
+internal struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     internal var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index e3464b693ec..79399389451 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct ArrayTest: Codable, Hashable {
+internal struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     internal var arrayOfString: [String]?
     internal var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 042f77b8ab8..d564608fe85 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Capitalization: Codable, Hashable {
+internal struct Capitalization: Codable, JSONEncodable, Hashable {
 
     internal var smallCamel: String?
     internal var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 4828c445c1b..63bff8570b8 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Cat: Codable, Hashable {
+internal struct Cat: Codable, JSONEncodable, Hashable {
 
     internal var className: String
     internal var color: String? = "red"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 343d71d6873..9c7e6d829f2 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct CatAllOf: Codable, Hashable {
+internal struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     internal var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index df67d9bd6f1..2edac90e1bc 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Category: Codable, Hashable {
+internal struct Category: Codable, JSONEncodable, Hashable {
 
     internal var id: Int64?
     internal var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index d679cfe582a..966c60af5ab 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-internal struct ClassModel: Codable, Hashable {
+internal struct ClassModel: Codable, JSONEncodable, Hashable {
 
     internal var _class: String?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 2e50c580b65..1722e5aa961 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Client: Codable, Hashable {
+internal struct Client: Codable, JSONEncodable, Hashable {
 
     internal var client: String?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index cdf48f3a786..b8ab3168267 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Dog: Codable, Hashable {
+internal struct Dog: Codable, JSONEncodable, Hashable {
 
     internal var className: String
     internal var color: String? = "red"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index f2e801a399e..ace1ac3eab4 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct DogAllOf: Codable, Hashable {
+internal struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     internal var breed: String?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 950a66d752a..cf7484732ca 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct EnumArrays: Codable, Hashable {
+internal struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     internal enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 77419816570..e82207bd88b 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct EnumTest: Codable, Hashable {
+internal struct EnumTest: Codable, JSONEncodable, Hashable {
 
     internal enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 14b22772e3f..b39148dbd2f 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-internal struct File: Codable, Hashable {
+internal struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     internal var sourceURI: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index e0f8e9990a5..2b5d09df619 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct FileSchemaTestClass: Codable, Hashable {
+internal struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     internal var file: File?
     internal var files: [File]?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index 6f8b00eddf8..87dd9fb1c4d 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct FormatTest: Codable, Hashable {
+internal struct FormatTest: Codable, JSONEncodable, Hashable {
 
     internal var integer: Int?
     internal var int32: Int?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 0ddedc17958..d446fea284f 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct HasOnlyReadOnly: Codable, Hashable {
+internal struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     internal var bar: String?
     internal var foo: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 0e7903fd06a..4b88251418c 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct List: Codable, Hashable {
+internal struct List: Codable, JSONEncodable, Hashable {
 
     internal var _123list: String?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 748bc6781a5..32e525f8131 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct MapTest: Codable, Hashable {
+internal struct MapTest: Codable, JSONEncodable, Hashable {
 
     internal enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index 68ef87daf00..e2f30699895 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+internal struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     internal var uuid: UUID?
     internal var dateTime: Date?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index dad6079ddb2..f7de4ac565e 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-internal struct Model200Response: Codable, Hashable {
+internal struct Model200Response: Codable, JSONEncodable, Hashable {
 
     internal var name: Int?
     internal var _class: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 59807f76209..c5f81444e45 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-internal struct Name: Codable, Hashable {
+internal struct Name: Codable, JSONEncodable, Hashable {
 
     internal var name: Int
     internal var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 36cf8d164bd..11ae4447f99 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct NumberOnly: Codable, Hashable {
+internal struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     internal var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index 45046f9a00f..72bdd4d71b4 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Order: Codable, Hashable {
+internal struct Order: Codable, JSONEncodable, Hashable {
 
     internal enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index 082cdebd26c..225f0c77787 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct OuterComposite: Codable, Hashable {
+internal struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     internal var myNumber: Double?
     internal var myString: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index ca9db44f248..bb526c4dba2 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Pet: Codable, Hashable {
+internal struct Pet: Codable, JSONEncodable, Hashable {
 
     internal enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index e8961d9d8a8..9a37d814952 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct ReadOnlyFirst: Codable, Hashable {
+internal struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     internal var bar: String?
     internal var baz: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index 7a2e2da47f8..f3a0c0a5564 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-internal struct Return: Codable, Hashable {
+internal struct Return: Codable, JSONEncodable, Hashable {
 
     internal var _return: Int?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index 2c3d25c5bbb..0ff74e0c2db 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct SpecialModelName: Codable, Hashable {
+internal struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     internal var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 4b76e50cece..9cba9f30094 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct StringBooleanMap: Codable, Hashable {
+internal struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     internal enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 810603ff0b5..b765ab745f2 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct Tag: Codable, Hashable {
+internal struct Tag: Codable, JSONEncodable, Hashable {
 
     internal var id: Int64?
     internal var name: String?
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index 4a71a601e1b..9d14f7189f2 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct TypeHolderDefault: Codable, Hashable {
+internal struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     internal var stringItem: String = "what"
     internal var numberItem: Double
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 71cdf9ee1ea..82b087cf7d9 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct TypeHolderExample: Codable, Hashable {
+internal struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     internal var stringItem: String
     internal var numberItem: Double
diff --git a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 57017c341e7..3430a514b91 100644
--- a/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/nonPublicApi/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-internal struct User: Codable, Hashable {
+internal struct User: Codable, JSONEncodable, Hashable {
 
     internal var id: Int64?
     internal var username: String?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 1421cb642ee..7719c8969ea 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class AdditionalPropertiesClass: NSObject, Codable {
+@objc public class AdditionalPropertiesClass: NSObject, Codable, JSONEncodable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index d60621e7bf6..da38f5b0da4 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Animal: NSObject, Codable {
+@objc public class Animal: NSObject, Codable, JSONEncodable {
 
     public var _className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index 1b42b26535c..37145a77416 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class ApiResponse: NSObject, Codable {
+@objc public class ApiResponse: NSObject, Codable, JSONEncodable {
 
     public var code: Int?
     public var codeNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 08aca8598d0..060c953f61a 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class ArrayOfArrayOfNumberOnly: NSObject, Codable {
+@objc public class ArrayOfArrayOfNumberOnly: NSObject, Codable, JSONEncodable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index e8114a8f45e..6c038d5f130 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class ArrayOfNumberOnly: NSObject, Codable {
+@objc public class ArrayOfNumberOnly: NSObject, Codable, JSONEncodable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index be0dea61b91..e2d31205744 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class ArrayTest: NSObject, Codable {
+@objc public class ArrayTest: NSObject, Codable, JSONEncodable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 6f137adc91f..2bb646fafaf 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Capitalization: NSObject, Codable {
+@objc public class Capitalization: NSObject, Codable, JSONEncodable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 60eccac9412..3b2bcc29f69 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Cat: NSObject, Codable {
+@objc public class Cat: NSObject, Codable, JSONEncodable {
 
     public var _className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index cce886558e8..44bfb91f2d2 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class CatAllOf: NSObject, Codable {
+@objc public class CatAllOf: NSObject, Codable, JSONEncodable {
 
     public var declawed: Bool?
     public var declawedNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index c8e542ad6b5..193628d78fb 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Category: NSObject, Codable {
+@objc public class Category: NSObject, Codable, JSONEncodable {
 
     public var _id: Int64?
     public var _idNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 6bc90a989bd..05ad9f6e929 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-@objc public class ClassModel: NSObject, Codable {
+@objc public class ClassModel: NSObject, Codable, JSONEncodable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index a3585de4f0d..16accb0036f 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Client: NSObject, Codable {
+@objc public class Client: NSObject, Codable, JSONEncodable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 2b060c8ad38..8e3e5825e7c 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Dog: NSObject, Codable {
+@objc public class Dog: NSObject, Codable, JSONEncodable {
 
     public var _className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index d92db038ca4..92476d0c42a 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class DogAllOf: NSObject, Codable {
+@objc public class DogAllOf: NSObject, Codable, JSONEncodable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1269cb72e27..937f2d445af 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class EnumArrays: NSObject, Codable {
+@objc public class EnumArrays: NSObject, Codable, JSONEncodable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 066d266386b..aff4dfcee01 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class EnumTest: NSObject, Codable {
+@objc public class EnumTest: NSObject, Codable, JSONEncodable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index b175f6370d2..fb8b728d3be 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-@objc public class File: NSObject, Codable {
+@objc public class File: NSObject, Codable, JSONEncodable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 24a6e66432b..d29b62fe76d 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class FileSchemaTestClass: NSObject, Codable {
+@objc public class FileSchemaTestClass: NSObject, Codable, JSONEncodable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index 413656ff25e..d4ba9d436bb 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class FormatTest: NSObject, Codable {
+@objc public class FormatTest: NSObject, Codable, JSONEncodable {
 
     public var integer: Int?
     public var integerNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index eac4a144616..ba7da0978e1 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class HasOnlyReadOnly: NSObject, Codable {
+@objc public class HasOnlyReadOnly: NSObject, Codable, JSONEncodable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index f48559c0c45..bb1d3f7347a 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class List: NSObject, Codable {
+@objc public class List: NSObject, Codable, JSONEncodable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 68a3e128cc2..401cfdc61bf 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class MapTest: NSObject, Codable {
+@objc public class MapTest: NSObject, Codable, JSONEncodable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index 1594ac4a26a..c98d6c09be6 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class MixedPropertiesAndAdditionalPropertiesClass: NSObject, Codable {
+@objc public class MixedPropertiesAndAdditionalPropertiesClass: NSObject, Codable, JSONEncodable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index dfae9880b13..6469aa6217a 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-@objc public class Model200Response: NSObject, Codable {
+@objc public class Model200Response: NSObject, Codable, JSONEncodable {
 
     public var name: Int?
     public var nameNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index e1fed77c4a9..3f96e8c58f5 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-@objc public class Name: NSObject, Codable {
+@objc public class Name: NSObject, Codable, JSONEncodable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index b828f6d3b47..646a33e63ae 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class NumberOnly: NSObject, Codable {
+@objc public class NumberOnly: NSObject, Codable, JSONEncodable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index 27237e43da7..ccdd4da20c3 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Order: NSObject, Codable {
+@objc public class Order: NSObject, Codable, JSONEncodable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index bbc4536d428..9300269b2a4 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class OuterComposite: NSObject, Codable {
+@objc public class OuterComposite: NSObject, Codable, JSONEncodable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index d4d38218ecd..abd31c6042b 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Pet: NSObject, Codable {
+@objc public class Pet: NSObject, Codable, JSONEncodable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 8aef5456332..056dfa5e970 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class ReadOnlyFirst: NSObject, Codable {
+@objc public class ReadOnlyFirst: NSObject, Codable, JSONEncodable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index f497fdc7e09..49942cb402b 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-@objc public class Return: NSObject, Codable {
+@objc public class Return: NSObject, Codable, JSONEncodable {
 
     public var _return: Int?
     public var _returnNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index 8a5860ae0b9..a75d92608fa 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class SpecialModelName: NSObject, Codable {
+@objc public class SpecialModelName: NSObject, Codable, JSONEncodable {
 
     public var specialPropertyName: Int64?
     public var specialPropertyNameNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 4708c93daa0..29d7afe6a68 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class StringBooleanMap: NSObject, Codable {
+@objc public class StringBooleanMap: NSObject, Codable, JSONEncodable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 6150ef4895f..5c7181fff98 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class Tag: NSObject, Codable {
+@objc public class Tag: NSObject, Codable, JSONEncodable {
 
     public var _id: Int64?
     public var _idNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index 27408db6f27..7606991fa33 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class TypeHolderDefault: NSObject, Codable {
+@objc public class TypeHolderDefault: NSObject, Codable, JSONEncodable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 61c7c8b4fb4..9f272d040fb 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class TypeHolderExample: NSObject, Codable {
+@objc public class TypeHolderExample: NSObject, Codable, JSONEncodable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 3c71f76aab0..b2444a4c7af 100644
--- a/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/objcCompatible/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-@objc public class User: NSObject, Codable {
+@objc public class User: NSObject, Codable, JSONEncodable {
 
     public var _id: Int64?
     public var _idNum: NSNumber? {
diff --git a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Apple.swift b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Apple.swift
index ee0b5786ef1..897f9223084 100644
--- a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Apple.swift
+++ b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Apple.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Apple: Codable, Hashable {
+public struct Apple: Codable, JSONEncodable, Hashable {
 
     public var kind: String?
 
diff --git a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Banana.swift b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Banana.swift
index 1ad6e976a7e..9173607e0b5 100644
--- a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Banana.swift
+++ b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Banana.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Banana: Codable, Hashable {
+public struct Banana: Codable, JSONEncodable, Hashable {
 
     public var count: Double?
 
diff --git a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Fruit.swift b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Fruit.swift
index c249774d2a2..76f10ba92e7 100644
--- a/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Fruit.swift
+++ b/samples/client/petstore/swift5/oneOf/PetstoreClient/Classes/OpenAPIs/Models/Fruit.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public enum Fruit: Codable, Hashable {
+public enum Fruit: Codable, JSONEncodable, Hashable {
     case typeApple(Apple)
     case typeBanana(Banana)
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index cc93d4c30d3..152de64ee6e 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -66,6 +66,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/promisekitLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 34f35d9b4c9..fa46ae0b457 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public private(set) var mapString: [String: String]?
     public private(set) var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index 14bb2bd2fe0..0cff33a9e4d 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public private(set) var className: String
     public private(set) var color: String? = "red"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index acaac402ef4..05b7a1702f2 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public private(set) var code: Int?
     public private(set) var type: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index d8ef19116b8..d386237437c 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public private(set) var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 949077533e9..53892ad173b 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public private(set) var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 6135c1556a2..0df050c0c7f 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public private(set) var arrayOfString: [String]?
     public private(set) var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 6353bd4d8a8..ce9ccf6e82d 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public private(set) var smallCamel: String?
     public private(set) var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 834c51d9152..bd99d8d4388 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public private(set) var className: String
     public private(set) var color: String? = "red"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index b227089dc4f..26d078c63b0 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public private(set) var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 1413c58141e..1b25bb68206 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public private(set) var id: Int64?
     public private(set) var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 73b8414f342..d2bf98371fb 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public private(set) var _class: String?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 364b58f1c4e..073a19f5138 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public private(set) var client: String?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 849fbfed745..7765adb807e 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public private(set) var className: String
     public private(set) var color: String? = "red"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 527edd845c4..00536fafe47 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public private(set) var breed: String?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1a79ffe95b1..de3154323f3 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index c097933904b..6d471e606dc 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index c5ebbaf2f4f..8e9d198ac24 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public private(set) var sourceURI: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index c04b1dccf76..a66a9b98daf 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public private(set) var file: File?
     public private(set) var files: [File]?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index 65bb0ca0842..3bc18bc2979 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public private(set) var integer: Int?
     public private(set) var int32: Int?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index e8216047d6e..638236127d1 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public private(set) var bar: String?
     public private(set) var foo: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 1269b40251d..0f84dfd4264 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public private(set) var _123list: String?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 19f258d2929..665fe0315a8 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index 2dd49ab0212..b0342881fd0 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public private(set) var uuid: UUID?
     public private(set) var dateTime: Date?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 9080e5c382f..a76505ff962 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public private(set) var name: Int?
     public private(set) var _class: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index cf7c0094910..afa3c0c1f85 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public private(set) var name: Int
     public private(set) var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 36be35a0533..74a00b38442 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public private(set) var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index bda67408a9d..2a13d969388 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index d8e7469f99a..2e191a0964c 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public private(set) var myNumber: Double?
     public private(set) var myString: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index 5ba4da07a5c..51c76357284 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 6b80302150a..b0ad79f0a72 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public private(set) var bar: String?
     public private(set) var baz: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index ca4883d9251..99b9adfda10 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public private(set) var _return: Int?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index 66b8f4d69ff..a8d327a5d90 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public private(set) var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 11a5a854895..989685c535e 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 2af3e2f0698..804f73c2ca6 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public private(set) var id: Int64?
     public private(set) var name: String?
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index 125a63b0ed3..80da349b93c 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public private(set) var stringItem: String = "what"
     public private(set) var numberItem: Double
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 3aa1851a585..eba6a29c27c 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public private(set) var stringItem: String
     public private(set) var numberItem: Double
diff --git a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 4af156b9bac..370047ceea5 100644
--- a/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/readonlyProperties/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public private(set) var id: Int64?
     public private(set) var username: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 16e69e560bd..a0419d54f15 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 23402143f71..d5ab7e422f2 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index afc2b51f8f3..9429b341fa9 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 126c35c85a6..548b82c049e 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/resultLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index 570ea5f64bd..0b074d6d070 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension HTTPURLResponse {
     var isStatusCodeSuccessful: Bool {
         return (200 ..< 300).contains(statusCode)
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index 621afb93561..623c4c7fd2c 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable, Hashable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index cdd4f5335b9..a6882d6517f 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable, Hashable {
+public struct Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index c365505ab9d..1890fcf9fde 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable, Hashable {
+public struct ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 226f7456181..eabae42d3bf 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index 39831127871..fa93d7c6c74 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable, Hashable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 8865d76bef2..c99f82be9b9 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable, Hashable {
+public struct ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index 71cd93bce5f..f8a3f64e2ee 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable, Hashable {
+public struct Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 457e04bd475..253bbd7c04c 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable, Hashable {
+public struct Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 8caebb1c206..681bcada15f 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable, Hashable {
+public struct CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index 6a72957b687..f75fe8ac331 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable, Hashable {
+public struct ClassModel: Codable, JSONEncodable, Hashable {
 
     public var `class`: String?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index 60dbc5dc5c1..21a539ba010 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable, Hashable {
+public struct Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 658732a7f36..dc3bb465a5f 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable, Hashable {
+public struct Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index 82b0dedf35b..627bb997c5e 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable, Hashable {
+public struct DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index 1d8ce99539c..e06009060c5 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable, Hashable {
+public struct EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 8c8bca49774..3a9edb08ea7 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable, Hashable {
+public struct EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index 05dd5b1a825..1378b4f9b20 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable, Hashable {
+public struct File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index 3ca66a31359..f9a39d2e58e 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable, Hashable {
+public struct FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index a7a4b39e720..0a329955482 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable, Hashable {
+public struct FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 54ed8a723c6..9e2fe8cc87f 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable, Hashable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 67e3048469f..b9a06034e01 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable, Hashable {
+public struct List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index 1e728fcdf58..c4792800425 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable, Hashable {
+public struct MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index c79ca459217..c15921ae6c7 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 7d15d45c21a..b1b3712eac3 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable, Hashable {
+public struct Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var `class`: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index 8698915e5ef..e8a19ee3d99 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable, Hashable {
+public struct Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 87ceb64bb97..10fd059c856 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable, Hashable {
+public struct NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index e2eeced4c57..bf7da6a3f86 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable, Hashable {
+public struct Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index edeaccaeaa6..99568c8facf 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable, Hashable {
+public struct OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index 57ba3f577c8..05cf40bedd3 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable, Hashable {
+public struct ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index bda0c791d83..4886c9a8ac2 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable, Hashable {
+public struct Return: Codable, JSONEncodable, Hashable {
 
     public var `return`: Int?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index bfe9723f888..543f1fa5ad4 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable, Hashable {
+public struct SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 2edf881a8f0..9c40477ece7 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable, Hashable {
+public struct StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index e58eecd960f..9a7d7e6c8e6 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable, Hashable {
+public struct TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 6c22fdbae7a..dd67ca7851d 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable, Hashable {
+public struct TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index 7afe359ae40..e55b50dc4f7 100644
--- a/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/rxswiftLibrary/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable, Hashable {
+public struct User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Extensions.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Extensions.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/AdditionalPropertiesClass.swift
index e0ae7a60472..bbe32fd2015 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/AdditionalPropertiesClass.swift
@@ -15,7 +15,7 @@ public typealias AdditionalPropertiesClass = PetstoreClientAPI.AdditionalPropert
 
 extension PetstoreClientAPI {
 
-public final class AdditionalPropertiesClass: Codable, Hashable {
+public final class AdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Animal.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Animal.swift
index 48bce08faa0..d61432435c6 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Animal.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Animal.swift
@@ -15,7 +15,7 @@ public typealias Animal = PetstoreClientAPI.Animal
 
 extension PetstoreClientAPI {
 
-public final class Animal: Codable, Hashable {
+public final class Animal: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ApiResponse.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ApiResponse.swift
index 3ba139fd803..a42b0caadde 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ApiResponse.swift
@@ -15,7 +15,7 @@ public typealias ApiResponse = PetstoreClientAPI.ApiResponse
 
 extension PetstoreClientAPI {
 
-public final class ApiResponse: Codable, Hashable {
+public final class ApiResponse: Codable, JSONEncodable, Hashable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfArrayOfNumberOnly.swift
index 14f26778b17..a7860c6b8aa 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfArrayOfNumberOnly.swift
@@ -15,7 +15,7 @@ public typealias ArrayOfArrayOfNumberOnly = PetstoreClientAPI.ArrayOfArrayOfNumb
 
 extension PetstoreClientAPI {
 
-public final class ArrayOfArrayOfNumberOnly: Codable, Hashable {
+public final class ArrayOfArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfNumberOnly.swift
index 8eb085e6b55..2c5a2dc4890 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayOfNumberOnly.swift
@@ -15,7 +15,7 @@ public typealias ArrayOfNumberOnly = PetstoreClientAPI.ArrayOfNumberOnly
 
 extension PetstoreClientAPI {
 
-public final class ArrayOfNumberOnly: Codable, Hashable {
+public final class ArrayOfNumberOnly: Codable, JSONEncodable, Hashable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayTest.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayTest.swift
index aade19d76db..94b6a87508a 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ArrayTest.swift
@@ -15,7 +15,7 @@ public typealias ArrayTest = PetstoreClientAPI.ArrayTest
 
 extension PetstoreClientAPI {
 
-public final class ArrayTest: Codable, Hashable {
+public final class ArrayTest: Codable, JSONEncodable, Hashable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Capitalization.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Capitalization.swift
index 22f31556b1d..a0a2e2b7ed2 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Capitalization.swift
@@ -15,7 +15,7 @@ public typealias Capitalization = PetstoreClientAPI.Capitalization
 
 extension PetstoreClientAPI {
 
-public final class Capitalization: Codable, Hashable {
+public final class Capitalization: Codable, JSONEncodable, Hashable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Cat.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Cat.swift
index d7388043fef..006b34e4510 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Cat.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Cat.swift
@@ -15,7 +15,7 @@ public typealias Cat = PetstoreClientAPI.Cat
 
 extension PetstoreClientAPI {
 
-public final class Cat: Codable, Hashable {
+public final class Cat: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/CatAllOf.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/CatAllOf.swift
index 9a37243f5d1..b92fe697f1c 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/CatAllOf.swift
@@ -15,7 +15,7 @@ public typealias CatAllOf = PetstoreClientAPI.CatAllOf
 
 extension PetstoreClientAPI {
 
-public final class CatAllOf: Codable, Hashable {
+public final class CatAllOf: Codable, JSONEncodable, Hashable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Category.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Category.swift
index 743b83ae821..90eec24e2a6 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Category.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Category.swift
@@ -15,7 +15,7 @@ public typealias Category = PetstoreClientAPI.Category
 
 extension PetstoreClientAPI {
 
-public final class Category: Codable, Hashable {
+public final class Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ClassModel.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ClassModel.swift
index a089549ef8d..411d00c8849 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ClassModel.swift
@@ -16,7 +16,7 @@ public typealias ClassModel = PetstoreClientAPI.ClassModel
 extension PetstoreClientAPI {
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public final class ClassModel: Codable, Hashable {
+public final class ClassModel: Codable, JSONEncodable, Hashable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Client.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Client.swift
index 9ddec91144b..c41a2876504 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Client.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Client.swift
@@ -15,7 +15,7 @@ public typealias Client = PetstoreClientAPI.Client
 
 extension PetstoreClientAPI {
 
-public final class Client: Codable, Hashable {
+public final class Client: Codable, JSONEncodable, Hashable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Dog.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Dog.swift
index e4c05c90cb4..a8f98eecb28 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Dog.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Dog.swift
@@ -15,7 +15,7 @@ public typealias Dog = PetstoreClientAPI.Dog
 
 extension PetstoreClientAPI {
 
-public final class Dog: Codable, Hashable {
+public final class Dog: Codable, JSONEncodable, Hashable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/DogAllOf.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/DogAllOf.swift
index 0ea9da741ca..c8de40cab7b 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/DogAllOf.swift
@@ -15,7 +15,7 @@ public typealias DogAllOf = PetstoreClientAPI.DogAllOf
 
 extension PetstoreClientAPI {
 
-public final class DogAllOf: Codable, Hashable {
+public final class DogAllOf: Codable, JSONEncodable, Hashable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumArrays.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumArrays.swift
index a796ffc79c6..c9c9ab8756c 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumArrays.swift
@@ -15,7 +15,7 @@ public typealias EnumArrays = PetstoreClientAPI.EnumArrays
 
 extension PetstoreClientAPI {
 
-public final class EnumArrays: Codable, Hashable {
+public final class EnumArrays: Codable, JSONEncodable, Hashable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumTest.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumTest.swift
index ad77e814461..b0a4756d3e8 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/EnumTest.swift
@@ -15,7 +15,7 @@ public typealias EnumTest = PetstoreClientAPI.EnumTest
 
 extension PetstoreClientAPI {
 
-public final class EnumTest: Codable, Hashable {
+public final class EnumTest: Codable, JSONEncodable, Hashable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/File.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/File.swift
index 74ca2caa49d..d10c0e0a4b5 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/File.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/File.swift
@@ -16,7 +16,7 @@ public typealias File = PetstoreClientAPI.File
 extension PetstoreClientAPI {
 
 /** Must be named &#x60;File&#x60; for test. */
-public final class File: Codable, Hashable {
+public final class File: Codable, JSONEncodable, Hashable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FileSchemaTestClass.swift
index 13048f3fb44..550858bd70e 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FileSchemaTestClass.swift
@@ -15,7 +15,7 @@ public typealias FileSchemaTestClass = PetstoreClientAPI.FileSchemaTestClass
 
 extension PetstoreClientAPI {
 
-public final class FileSchemaTestClass: Codable, Hashable {
+public final class FileSchemaTestClass: Codable, JSONEncodable, Hashable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FormatTest.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FormatTest.swift
index 24057510679..9b54a4d7342 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/FormatTest.swift
@@ -15,7 +15,7 @@ public typealias FormatTest = PetstoreClientAPI.FormatTest
 
 extension PetstoreClientAPI {
 
-public final class FormatTest: Codable, Hashable {
+public final class FormatTest: Codable, JSONEncodable, Hashable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/HasOnlyReadOnly.swift
index 56c0865e0dc..7c991e9e7c4 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/HasOnlyReadOnly.swift
@@ -15,7 +15,7 @@ public typealias HasOnlyReadOnly = PetstoreClientAPI.HasOnlyReadOnly
 
 extension PetstoreClientAPI {
 
-public final class HasOnlyReadOnly: Codable, Hashable {
+public final class HasOnlyReadOnly: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/List.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/List.swift
index bf620d4aa16..7f77dd2d5f0 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/List.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/List.swift
@@ -15,7 +15,7 @@ public typealias List = PetstoreClientAPI.List
 
 extension PetstoreClientAPI {
 
-public final class List: Codable, Hashable {
+public final class List: Codable, JSONEncodable, Hashable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MapTest.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MapTest.swift
index c94fa116b11..90feda030db 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MapTest.swift
@@ -15,7 +15,7 @@ public typealias MapTest = PetstoreClientAPI.MapTest
 
 extension PetstoreClientAPI {
 
-public final class MapTest: Codable, Hashable {
+public final class MapTest: Codable, JSONEncodable, Hashable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index 9980d557872..f6e53c35028 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -15,7 +15,7 @@ public typealias MixedPropertiesAndAdditionalPropertiesClass = PetstoreClientAPI
 
 extension PetstoreClientAPI {
 
-public final class MixedPropertiesAndAdditionalPropertiesClass: Codable, Hashable {
+public final class MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable, Hashable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Model200Response.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Model200Response.swift
index 21981f46098..917b539da00 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Model200Response.swift
@@ -16,7 +16,7 @@ public typealias Model200Response = PetstoreClientAPI.Model200Response
 extension PetstoreClientAPI {
 
 /** Model for testing model name starting with number */
-public final class Model200Response: Codable, Hashable {
+public final class Model200Response: Codable, JSONEncodable, Hashable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Name.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Name.swift
index c7c6374fcd7..fa3e1bc692f 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Name.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Name.swift
@@ -16,7 +16,7 @@ public typealias Name = PetstoreClientAPI.Name
 extension PetstoreClientAPI {
 
 /** Model for testing model name same as property name */
-public final class Name: Codable, Hashable {
+public final class Name: Codable, JSONEncodable, Hashable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/NumberOnly.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/NumberOnly.swift
index 1cbf7fc2235..9412892a223 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/NumberOnly.swift
@@ -15,7 +15,7 @@ public typealias NumberOnly = PetstoreClientAPI.NumberOnly
 
 extension PetstoreClientAPI {
 
-public final class NumberOnly: Codable, Hashable {
+public final class NumberOnly: Codable, JSONEncodable, Hashable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Order.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Order.swift
index ca252a55cbc..6a9c4ec8937 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Order.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Order.swift
@@ -15,7 +15,7 @@ public typealias Order = PetstoreClientAPI.Order
 
 extension PetstoreClientAPI {
 
-public final class Order: Codable, Hashable {
+public final class Order: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/OuterComposite.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/OuterComposite.swift
index ac2e2c17b63..cc9598c3fa1 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/OuterComposite.swift
@@ -15,7 +15,7 @@ public typealias OuterComposite = PetstoreClientAPI.OuterComposite
 
 extension PetstoreClientAPI {
 
-public final class OuterComposite: Codable, Hashable {
+public final class OuterComposite: Codable, JSONEncodable, Hashable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Pet.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Pet.swift
index c764a418dea..ee791a3947a 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Pet.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Pet.swift
@@ -15,7 +15,7 @@ public typealias Pet = PetstoreClientAPI.Pet
 
 extension PetstoreClientAPI {
 
-public final class Pet: Codable, Hashable {
+public final class Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ReadOnlyFirst.swift
index 1487fd0b22c..80fb29f9d9d 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/ReadOnlyFirst.swift
@@ -15,7 +15,7 @@ public typealias ReadOnlyFirst = PetstoreClientAPI.ReadOnlyFirst
 
 extension PetstoreClientAPI {
 
-public final class ReadOnlyFirst: Codable, Hashable {
+public final class ReadOnlyFirst: Codable, JSONEncodable, Hashable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Return.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Return.swift
index 63a54182784..233b3d401e0 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Return.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Return.swift
@@ -16,7 +16,7 @@ public typealias Return = PetstoreClientAPI.Return
 extension PetstoreClientAPI {
 
 /** Model for testing reserved words */
-public final class Return: Codable, Hashable {
+public final class Return: Codable, JSONEncodable, Hashable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/SpecialModelName.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/SpecialModelName.swift
index d9b2471b63c..ac7c5f87a76 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/SpecialModelName.swift
@@ -15,7 +15,7 @@ public typealias SpecialModelName = PetstoreClientAPI.SpecialModelName
 
 extension PetstoreClientAPI {
 
-public final class SpecialModelName: Codable, Hashable {
+public final class SpecialModelName: Codable, JSONEncodable, Hashable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/StringBooleanMap.swift
index e9b64b3e361..495a09ba807 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/StringBooleanMap.swift
@@ -15,7 +15,7 @@ public typealias StringBooleanMap = PetstoreClientAPI.StringBooleanMap
 
 extension PetstoreClientAPI {
 
-public final class StringBooleanMap: Codable, Hashable {
+public final class StringBooleanMap: Codable, JSONEncodable, Hashable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Tag.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Tag.swift
index e9bbb0b75e4..fbb689857fc 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Tag.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/Tag.swift
@@ -15,7 +15,7 @@ public typealias Tag = PetstoreClientAPI.Tag
 
 extension PetstoreClientAPI {
 
-public final class Tag: Codable, Hashable {
+public final class Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderDefault.swift
index b1bad05f594..39bc3abd9a9 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderDefault.swift
@@ -15,7 +15,7 @@ public typealias TypeHolderDefault = PetstoreClientAPI.TypeHolderDefault
 
 extension PetstoreClientAPI {
 
-public final class TypeHolderDefault: Codable, Hashable {
+public final class TypeHolderDefault: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderExample.swift
index 604354fd3f0..6f955d93f3c 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/TypeHolderExample.swift
@@ -15,7 +15,7 @@ public typealias TypeHolderExample = PetstoreClientAPI.TypeHolderExample
 
 extension PetstoreClientAPI {
 
-public final class TypeHolderExample: Codable, Hashable {
+public final class TypeHolderExample: Codable, JSONEncodable, Hashable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/User.swift b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/User.swift
index 438f702a5a3..e0616cdca59 100644
--- a/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/User.swift
+++ b/samples/client/petstore/swift5/urlsessionLibrary/Sources/PetstoreClient/Models/User.swift
@@ -15,7 +15,7 @@ public typealias User = PetstoreClientAPI.User
 
 extension PetstoreClientAPI {
 
-public final class User: Codable, Hashable {
+public final class User: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Extensions.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Extensions.swift
index e2b73073804..8a06e2524e5 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Extensions.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Extensions.swift
@@ -65,6 +65,16 @@ extension Date: JSONEncodable {
     }
 }
 
+extension JSONEncodable where Self: Encodable {
+    func encodeToJSON() -> Any {
+        let encoder = CodableHelper.jsonEncoder
+        guard let data = try? encoder.encode(self) else {
+            fatalError("Could not encode to json: \(self)")
+        }
+        return data.encodeToJSON()
+    }
+}
+
 extension String: CodingKey {
 
     public var stringValue: String {
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
index e760b200563..6292a8a5403 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/AdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct AdditionalPropertiesClass: Codable {
+public struct AdditionalPropertiesClass: Codable, JSONEncodable {
 
     public var mapString: [String: String]?
     public var mapMapString: [String: [String: String]]?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
index fb1a2df615d..06c768bb6bc 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Animal.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Animal: Codable {
+public struct Animal: Codable, JSONEncodable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
index 4ee097de054..15dcb8747c4 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ApiResponse.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ApiResponse: Codable {
+public struct ApiResponse: Codable, JSONEncodable {
 
     public var code: Int?
     public var type: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
index 6f3ceb17753..1ae8a36fefe 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfArrayOfNumberOnly: Codable {
+public struct ArrayOfArrayOfNumberOnly: Codable, JSONEncodable {
 
     public var arrayArrayNumber: [[Double]]?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
index eb9892beb2b..90167ba90ef 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayOfNumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayOfNumberOnly: Codable {
+public struct ArrayOfNumberOnly: Codable, JSONEncodable {
 
     public var arrayNumber: [Double]?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
index 76aad66ec82..e24014ff7b7 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ArrayTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ArrayTest: Codable {
+public struct ArrayTest: Codable, JSONEncodable {
 
     public var arrayOfString: [String]?
     public var arrayArrayOfInteger: [[Int64]]?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
index d06bb38d2d1..dd8c7ad0a6b 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Capitalization.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Capitalization: Codable {
+public struct Capitalization: Codable, JSONEncodable {
 
     public var smallCamel: String?
     public var capitalCamel: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
index 7a394aca88d..80d27fa1a2f 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Cat.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Cat: Codable {
+public struct Cat: Codable, JSONEncodable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
index 679eda93b89..80814e4a9cc 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/CatAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct CatAllOf: Codable {
+public struct CatAllOf: Codable, JSONEncodable {
 
     public var declawed: Bool?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Category.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
index 89016ca353d..75b68ec01e2 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Category.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Category: Codable, Hashable {
+public struct Category: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String? = "default-name"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
index bc4e56c01ae..a3017674950 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ClassModel.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model with \&quot;_class\&quot; property */
-public struct ClassModel: Codable {
+public struct ClassModel: Codable, JSONEncodable {
 
     public var _class: String?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Client.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
index f1c50e5b8b9..9dda2b6224a 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Client.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Client: Codable {
+public struct Client: Codable, JSONEncodable {
 
     public var client: String?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
index 55c387c28ae..f9fd593859b 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Dog.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Dog: Codable {
+public struct Dog: Codable, JSONEncodable {
 
     public var className: String
     public var color: String? = "red"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
index b86ba8ccf8f..16cbfcd3e70 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/DogAllOf.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct DogAllOf: Codable {
+public struct DogAllOf: Codable, JSONEncodable {
 
     public var breed: String?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
index edd583c8a29..3c847126473 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumArrays.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumArrays: Codable {
+public struct EnumArrays: Codable, JSONEncodable {
 
     public enum JustSymbol: String, Codable, CaseIterable {
         case greaterThanOrEqualTo = ">="
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
index 4ae75032cfc..c0894dbd97a 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/EnumTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct EnumTest: Codable {
+public struct EnumTest: Codable, JSONEncodable {
 
     public enum EnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/File.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/File.swift
index d6513e0df74..72273d1ca65 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/File.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/File.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Must be named &#x60;File&#x60; for test. */
-public struct File: Codable {
+public struct File: Codable, JSONEncodable {
 
     /** Test capitalization */
     public var sourceURI: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
index d707e2ff2e2..adf7f317dd9 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FileSchemaTestClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FileSchemaTestClass: Codable {
+public struct FileSchemaTestClass: Codable, JSONEncodable {
 
     public var file: File?
     public var files: [File]?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
index cbf0050081e..c2883d93dce 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/FormatTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct FormatTest: Codable {
+public struct FormatTest: Codable, JSONEncodable {
 
     public var integer: Int?
     public var int32: Int?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
index 9185cd673a8..46ca8c52847 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/HasOnlyReadOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct HasOnlyReadOnly: Codable {
+public struct HasOnlyReadOnly: Codable, JSONEncodable {
 
     public var bar: String?
     public var foo: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/List.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/List.swift
index 6568fe28f34..1cd923efb5d 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/List.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/List.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct List: Codable {
+public struct List: Codable, JSONEncodable {
 
     public var _123list: String?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
index eb9634803b3..4dbb2aef1e2 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MapTest.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MapTest: Codable {
+public struct MapTest: Codable, JSONEncodable {
 
     public enum MapOfEnumString: String, Codable, CaseIterable {
         case upper = "UPPER"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
index 4d171a58c80..56070f31c64 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/MixedPropertiesAndAdditionalPropertiesClass.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct MixedPropertiesAndAdditionalPropertiesClass: Codable {
+public struct MixedPropertiesAndAdditionalPropertiesClass: Codable, JSONEncodable {
 
     public var uuid: UUID?
     public var dateTime: Date?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
index 24a07e862b8..6f6a801aef8 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Model200Response.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name starting with number */
-public struct Model200Response: Codable {
+public struct Model200Response: Codable, JSONEncodable {
 
     public var name: Int?
     public var _class: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Name.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
index e38ffc2eebd..dec47015e2f 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Name.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing model name same as property name */
-public struct Name: Codable {
+public struct Name: Codable, JSONEncodable {
 
     public var name: Int
     public var snakeCase: NullEncodable<Int> = .encodeValue(11033)
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
index 555b1beda1d..b570fda3d19 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/NumberOnly.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct NumberOnly: Codable {
+public struct NumberOnly: Codable, JSONEncodable {
 
     public var justNumber: Double?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Order.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
index be133bc42ad..45694b3beef 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Order.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Order: Codable {
+public struct Order: Codable, JSONEncodable {
 
     public enum Status: String, Codable, CaseIterable {
         case placed = "placed"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
index 6e555ae9e1e..1a59760d19c 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/OuterComposite.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct OuterComposite: Codable {
+public struct OuterComposite: Codable, JSONEncodable {
 
     public var myNumber: Double?
     public var myString: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
index bceec7ccb53..f93b402b0fd 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Pet.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Pet: Codable, Hashable {
+public struct Pet: Codable, JSONEncodable, Hashable {
 
     public enum Status: String, Codable, CaseIterable {
         case available = "available"
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
index b4cd35ad296..34d46afc574 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/ReadOnlyFirst.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct ReadOnlyFirst: Codable {
+public struct ReadOnlyFirst: Codable, JSONEncodable {
 
     public var bar: String?
     public var baz: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Return.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
index f12d1c17fdc..29b11b873b7 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Return.swift
@@ -11,7 +11,7 @@ import AnyCodable
 #endif
 
 /** Model for testing reserved words */
-public struct Return: Codable {
+public struct Return: Codable, JSONEncodable {
 
     public var _return: Int?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
index f797e406453..378debbd7cf 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/SpecialModelName.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct SpecialModelName: Codable {
+public struct SpecialModelName: Codable, JSONEncodable {
 
     public var specialPropertyName: Int64?
 
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
index 1ef2bd41c79..e973ed2a662 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/StringBooleanMap.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct StringBooleanMap: Codable {
+public struct StringBooleanMap: Codable, JSONEncodable {
 
 
     public enum CodingKeys: CodingKey, CaseIterable {
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
index 07b826264f3..f2dea74b09d 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/Tag.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct Tag: Codable, Hashable {
+public struct Tag: Codable, JSONEncodable, Hashable {
 
     public var id: Int64?
     public var name: String?
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
index dcf87b413ab..340d4ddc019 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderDefault.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderDefault: Codable {
+public struct TypeHolderDefault: Codable, JSONEncodable {
 
     public var stringItem: String = "what"
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
index 634f2d55168..4c96232af41 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/TypeHolderExample.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct TypeHolderExample: Codable {
+public struct TypeHolderExample: Codable, JSONEncodable {
 
     public var stringItem: String
     public var numberItem: Double
diff --git a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/User.swift b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/User.swift
index bad75dea179..54dede9e823 100644
--- a/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/User.swift
+++ b/samples/client/petstore/swift5/x-swift-hashable/PetstoreClient/Classes/OpenAPIs/Models/User.swift
@@ -10,7 +10,7 @@ import Foundation
 import AnyCodable
 #endif
 
-public struct User: Codable {
+public struct User: Codable, JSONEncodable {
 
     public var id: Int64?
     public var username: String?
diff --git a/samples/client/petstore/typescript-axios/builds/composed-schemas/api.ts b/samples/client/petstore/typescript-axios/builds/composed-schemas/api.ts
index 13c92e708ca..e6572b57346 100644
--- a/samples/client/petstore/typescript-axios/builds/composed-schemas/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/composed-schemas/api.ts
@@ -79,16 +79,14 @@ export interface Dog {
     'breed'?: DogBreedEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum DogBreedEnum {
-    Dingo = 'Dingo',
-    Husky = 'Husky',
-    Retriever = 'Retriever',
-    Shepherd = 'Shepherd'
-}
+export const DogBreedEnum = {
+    Dingo: 'Dingo',
+    Husky: 'Husky',
+    Retriever: 'Retriever',
+    Shepherd: 'Shepherd'
+} as const;
+
+export type DogBreedEnum = typeof DogBreedEnum[keyof typeof DogBreedEnum];
 
 /**
  * 
@@ -110,16 +108,14 @@ export interface DogAllOf {
     'breed'?: DogAllOfBreedEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum DogAllOfBreedEnum {
-    Dingo = 'Dingo',
-    Husky = 'Husky',
-    Retriever = 'Retriever',
-    Shepherd = 'Shepherd'
-}
+export const DogAllOfBreedEnum = {
+    Dingo: 'Dingo',
+    Husky: 'Husky',
+    Retriever: 'Retriever',
+    Shepherd: 'Shepherd'
+} as const;
+
+export type DogAllOfBreedEnum = typeof DogAllOfBreedEnum[keyof typeof DogAllOfBreedEnum];
 
 /**
  * 
@@ -173,14 +169,12 @@ export interface PetByType {
     'hunts'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetByTypePetTypeEnum {
-    Cat = 'Cat',
-    Dog = 'Dog'
-}
+export const PetByTypePetTypeEnum = {
+    Cat: 'Cat',
+    Dog: 'Dog'
+} as const;
+
+export type PetByTypePetTypeEnum = typeof PetByTypePetTypeEnum[keyof typeof PetByTypePetTypeEnum];
 
 
 /**
diff --git a/samples/client/petstore/typescript-axios/builds/default/api.ts b/samples/client/petstore/typescript-axios/builds/default/api.ts
index fd8ae456d7a..893802cbed3 100644
--- a/samples/client/petstore/typescript-axios/builds/default/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/default/api.ts
@@ -109,15 +109,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -163,15 +161,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/es6-target/api.ts b/samples/client/petstore/typescript-axios/builds/es6-target/api.ts
index fd8ae456d7a..893802cbed3 100644
--- a/samples/client/petstore/typescript-axios/builds/es6-target/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/es6-target/api.ts
@@ -109,15 +109,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -163,15 +161,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/test-petstore/api.ts b/samples/client/petstore/typescript-axios/builds/test-petstore/api.ts
index 3d2a576b59c..7d715d7ea75 100644
--- a/samples/client/petstore/typescript-axios/builds/test-petstore/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/test-petstore/api.ts
@@ -362,13 +362,11 @@ export interface ChildCat extends ParentPet {
     'pet_type': ChildCatPetTypeEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum ChildCatPetTypeEnum {
-    ChildCat = 'ChildCat'
-}
+export const ChildCatPetTypeEnum = {
+    ChildCat: 'ChildCat'
+} as const;
+
+export type ChildCatPetTypeEnum = typeof ChildCatPetTypeEnum[keyof typeof ChildCatPetTypeEnum];
 
 /**
  * 
@@ -390,13 +388,11 @@ export interface ChildCatAllOf {
     'pet_type'?: ChildCatAllOfPetTypeEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum ChildCatAllOfPetTypeEnum {
-    ChildCat = 'ChildCat'
-}
+export const ChildCatAllOfPetTypeEnum = {
+    ChildCat: 'ChildCat'
+} as const;
+
+export type ChildCatAllOfPetTypeEnum = typeof ChildCatAllOfPetTypeEnum[keyof typeof ChildCatAllOfPetTypeEnum];
 
 /**
  * Model for testing model with \"_class\" property
@@ -548,22 +544,18 @@ export interface EnumArrays {
     'array_enum'?: Array<EnumArraysArrayEnumEnum>;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumArraysJustSymbolEnum {
-    GreaterThanOrEqualTo = '>=',
-    Dollar = '$'
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumArraysArrayEnumEnum {
-    Fish = 'fish',
-    Crab = 'crab'
-}
+export const EnumArraysJustSymbolEnum = {
+    GreaterThanOrEqualTo: '>=',
+    Dollar: '$'
+} as const;
+
+export type EnumArraysJustSymbolEnum = typeof EnumArraysJustSymbolEnum[keyof typeof EnumArraysJustSymbolEnum];
+export const EnumArraysArrayEnumEnum = {
+    Fish: 'fish',
+    Crab: 'crab'
+} as const;
+
+export type EnumArraysArrayEnumEnum = typeof EnumArraysArrayEnumEnum[keyof typeof EnumArraysArrayEnumEnum];
 
 /**
  * 
@@ -571,11 +563,14 @@ export enum EnumArraysArrayEnumEnum {
  * @enum {string}
  */
 
-export enum EnumClass {
-    Abc = '_abc',
-    Efg = '-efg',
-    Xyz = '(xyz)'
-}
+export const EnumClass = {
+    Abc: '_abc',
+    Efg: '-efg',
+    Xyz: '(xyz)'
+} as const;
+
+export type EnumClass = typeof EnumClass[keyof typeof EnumClass];
+
 
 /**
  * 
@@ -639,48 +634,38 @@ export interface EnumTest {
     'outerEnumIntegerDefaultValue'?: OuterEnumIntegerDefaultValue;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumStringEnum {
-    Upper = 'UPPER',
-    Lower = 'lower',
-    Empty = ''
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumStringRequiredEnum {
-    Upper = 'UPPER',
-    Lower = 'lower',
-    Empty = ''
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumIntegerEnum {
-    NUMBER_1 = 1,
-    NUMBER_MINUS_1 = -1
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumIntegerOnlyEnum {
-    NUMBER_2 = 2,
-    NUMBER_MINUS_2 = -2
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumNumberEnum {
-    NUMBER_1_DOT_1 = 1.1,
-    NUMBER_MINUS_1_DOT_2 = -1.2
-}
+export const EnumTestEnumStringEnum = {
+    Upper: 'UPPER',
+    Lower: 'lower',
+    Empty: ''
+} as const;
+
+export type EnumTestEnumStringEnum = typeof EnumTestEnumStringEnum[keyof typeof EnumTestEnumStringEnum];
+export const EnumTestEnumStringRequiredEnum = {
+    Upper: 'UPPER',
+    Lower: 'lower',
+    Empty: ''
+} as const;
+
+export type EnumTestEnumStringRequiredEnum = typeof EnumTestEnumStringRequiredEnum[keyof typeof EnumTestEnumStringRequiredEnum];
+export const EnumTestEnumIntegerEnum = {
+    NUMBER_1: 1,
+    NUMBER_MINUS_1: -1
+} as const;
+
+export type EnumTestEnumIntegerEnum = typeof EnumTestEnumIntegerEnum[keyof typeof EnumTestEnumIntegerEnum];
+export const EnumTestEnumIntegerOnlyEnum = {
+    NUMBER_2: 2,
+    NUMBER_MINUS_2: -2
+} as const;
+
+export type EnumTestEnumIntegerOnlyEnum = typeof EnumTestEnumIntegerOnlyEnum[keyof typeof EnumTestEnumIntegerOnlyEnum];
+export const EnumTestEnumNumberEnum = {
+    NUMBER_1_DOT_1: 1.1,
+    NUMBER_MINUS_1_DOT_2: -1.2
+} as const;
+
+export type EnumTestEnumNumberEnum = typeof EnumTestEnumNumberEnum[keyof typeof EnumTestEnumNumberEnum];
 
 /**
  * 
@@ -1007,14 +992,12 @@ export interface MapTest {
     'indirect_map'?: { [key: string]: boolean; };
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum MapTestMapOfEnumStringEnum {
-    Upper = 'UPPER',
-    Lower = 'lower'
-}
+export const MapTestMapOfEnumStringEnum = {
+    Upper: 'UPPER',
+    Lower: 'lower'
+} as const;
+
+export type MapTestMapOfEnumStringEnum = typeof MapTestMapOfEnumStringEnum[keyof typeof MapTestMapOfEnumStringEnum];
 
 /**
  * 
@@ -1283,15 +1266,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * 
@@ -1324,11 +1305,14 @@ export interface OuterComposite {
  * @enum {string}
  */
 
-export enum OuterEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OuterEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OuterEnum = typeof OuterEnum[keyof typeof OuterEnum];
+
 
 /**
  * 
@@ -1336,11 +1320,14 @@ export enum OuterEnum {
  * @enum {string}
  */
 
-export enum OuterEnumDefaultValue {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OuterEnumDefaultValue = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OuterEnumDefaultValue = typeof OuterEnumDefaultValue[keyof typeof OuterEnumDefaultValue];
+
 
 /**
  * 
@@ -1348,11 +1335,14 @@ export enum OuterEnumDefaultValue {
  * @enum {string}
  */
 
-export enum OuterEnumInteger {
-    NUMBER_0 = 0,
-    NUMBER_1 = 1,
-    NUMBER_2 = 2
-}
+export const OuterEnumInteger = {
+    NUMBER_0: 0,
+    NUMBER_1: 1,
+    NUMBER_2: 2
+} as const;
+
+export type OuterEnumInteger = typeof OuterEnumInteger[keyof typeof OuterEnumInteger];
+
 
 /**
  * 
@@ -1360,11 +1350,14 @@ export enum OuterEnumInteger {
  * @enum {string}
  */
 
-export enum OuterEnumIntegerDefaultValue {
-    NUMBER_0 = 0,
-    NUMBER_1 = 1,
-    NUMBER_2 = 2
-}
+export const OuterEnumIntegerDefaultValue = {
+    NUMBER_0: 0,
+    NUMBER_1: 1,
+    NUMBER_2: 2
+} as const;
+
+export type OuterEnumIntegerDefaultValue = typeof OuterEnumIntegerDefaultValue[keyof typeof OuterEnumIntegerDefaultValue];
+
 
 /**
  * 
@@ -1417,15 +1410,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * @type Pig
@@ -1731,15 +1722,13 @@ export interface Zebra {
     'className': string;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum ZebraTypeEnum {
-    Plains = 'plains',
-    Mountain = 'mountain',
-    Grevys = 'grevys'
-}
+export const ZebraTypeEnum = {
+    Plains: 'plains',
+    Mountain: 'mountain',
+    Grevys: 'grevys'
+} as const;
+
+export type ZebraTypeEnum = typeof ZebraTypeEnum[keyof typeof ZebraTypeEnum];
 
 
 /**
diff --git a/samples/client/petstore/typescript-axios/builds/with-complex-headers/api.ts b/samples/client/petstore/typescript-axios/builds/with-complex-headers/api.ts
index 4966ecd507d..8c7d0abac4a 100644
--- a/samples/client/petstore/typescript-axios/builds/with-complex-headers/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-complex-headers/api.ts
@@ -109,15 +109,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -163,15 +161,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts b/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts
index 5ef2fa3cbbf..62742e15f67 100644
--- a/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-fake-endpoints-models-for-testing-with-http-signature/api.ts
@@ -361,22 +361,18 @@ export interface EnumArrays {
     'array_enum'?: Array<EnumArraysArrayEnumEnum>;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumArraysJustSymbolEnum {
-    GreaterThanOrEqualTo = '>=',
-    Dollar = '$'
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumArraysArrayEnumEnum {
-    Fish = 'fish',
-    Crab = 'crab'
-}
+export const EnumArraysJustSymbolEnum = {
+    GreaterThanOrEqualTo: '>=',
+    Dollar: '$'
+} as const;
+
+export type EnumArraysJustSymbolEnum = typeof EnumArraysJustSymbolEnum[keyof typeof EnumArraysJustSymbolEnum];
+export const EnumArraysArrayEnumEnum = {
+    Fish: 'fish',
+    Crab: 'crab'
+} as const;
+
+export type EnumArraysArrayEnumEnum = typeof EnumArraysArrayEnumEnum[keyof typeof EnumArraysArrayEnumEnum];
 
 /**
  * 
@@ -384,11 +380,14 @@ export enum EnumArraysArrayEnumEnum {
  * @enum {string}
  */
 
-export enum EnumClass {
-    Abc = '_abc',
-    Efg = '-efg',
-    Xyz = '(xyz)'
-}
+export const EnumClass = {
+    Abc: '_abc',
+    Efg: '-efg',
+    Xyz: '(xyz)'
+} as const;
+
+export type EnumClass = typeof EnumClass[keyof typeof EnumClass];
+
 
 /**
  * 
@@ -446,40 +445,32 @@ export interface EnumTest {
     'outerEnumIntegerDefaultValue'?: OuterEnumIntegerDefaultValue;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumStringEnum {
-    Upper = 'UPPER',
-    Lower = 'lower',
-    Empty = ''
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumStringRequiredEnum {
-    Upper = 'UPPER',
-    Lower = 'lower',
-    Empty = ''
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumIntegerEnum {
-    NUMBER_1 = 1,
-    NUMBER_MINUS_1 = -1
-}
-/**
-    * @export
-    * @enum {string}
-    */
-export enum EnumTestEnumNumberEnum {
-    NUMBER_1_DOT_1 = 1.1,
-    NUMBER_MINUS_1_DOT_2 = -1.2
-}
+export const EnumTestEnumStringEnum = {
+    Upper: 'UPPER',
+    Lower: 'lower',
+    Empty: ''
+} as const;
+
+export type EnumTestEnumStringEnum = typeof EnumTestEnumStringEnum[keyof typeof EnumTestEnumStringEnum];
+export const EnumTestEnumStringRequiredEnum = {
+    Upper: 'UPPER',
+    Lower: 'lower',
+    Empty: ''
+} as const;
+
+export type EnumTestEnumStringRequiredEnum = typeof EnumTestEnumStringRequiredEnum[keyof typeof EnumTestEnumStringRequiredEnum];
+export const EnumTestEnumIntegerEnum = {
+    NUMBER_1: 1,
+    NUMBER_MINUS_1: -1
+} as const;
+
+export type EnumTestEnumIntegerEnum = typeof EnumTestEnumIntegerEnum[keyof typeof EnumTestEnumIntegerEnum];
+export const EnumTestEnumNumberEnum = {
+    NUMBER_1_DOT_1: 1.1,
+    NUMBER_MINUS_1_DOT_2: -1.2
+} as const;
+
+export type EnumTestEnumNumberEnum = typeof EnumTestEnumNumberEnum[keyof typeof EnumTestEnumNumberEnum];
 
 /**
  * 
@@ -743,14 +734,12 @@ export interface MapTest {
     'indirect_map'?: { [key: string]: boolean; };
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum MapTestMapOfEnumStringEnum {
-    Upper = 'UPPER',
-    Lower = 'lower'
-}
+export const MapTestMapOfEnumStringEnum = {
+    Upper: 'UPPER',
+    Lower: 'lower'
+} as const;
+
+export type MapTestMapOfEnumStringEnum = typeof MapTestMapOfEnumStringEnum[keyof typeof MapTestMapOfEnumStringEnum];
 
 /**
  * 
@@ -978,15 +967,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * 
@@ -1019,11 +1006,14 @@ export interface OuterComposite {
  * @enum {string}
  */
 
-export enum OuterEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OuterEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OuterEnum = typeof OuterEnum[keyof typeof OuterEnum];
+
 
 /**
  * 
@@ -1031,11 +1021,14 @@ export enum OuterEnum {
  * @enum {string}
  */
 
-export enum OuterEnumDefaultValue {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OuterEnumDefaultValue = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OuterEnumDefaultValue = typeof OuterEnumDefaultValue[keyof typeof OuterEnumDefaultValue];
+
 
 /**
  * 
@@ -1043,11 +1036,14 @@ export enum OuterEnumDefaultValue {
  * @enum {string}
  */
 
-export enum OuterEnumInteger {
-    NUMBER_0 = 0,
-    NUMBER_1 = 1,
-    NUMBER_2 = 2
-}
+export const OuterEnumInteger = {
+    NUMBER_0: 0,
+    NUMBER_1: 1,
+    NUMBER_2: 2
+} as const;
+
+export type OuterEnumInteger = typeof OuterEnumInteger[keyof typeof OuterEnumInteger];
+
 
 /**
  * 
@@ -1055,11 +1051,14 @@ export enum OuterEnumInteger {
  * @enum {string}
  */
 
-export enum OuterEnumIntegerDefaultValue {
-    NUMBER_0 = 0,
-    NUMBER_1 = 1,
-    NUMBER_2 = 2
-}
+export const OuterEnumIntegerDefaultValue = {
+    NUMBER_0: 0,
+    NUMBER_1: 1,
+    NUMBER_2: 2
+} as const;
+
+export type OuterEnumIntegerDefaultValue = typeof OuterEnumIntegerDefaultValue[keyof typeof OuterEnumIntegerDefaultValue];
+
 
 /**
  * 
@@ -1106,15 +1105,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * 
@@ -1353,15 +1350,13 @@ export interface Zebra {
     'className': string;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum ZebraTypeEnum {
-    Plains = 'plains',
-    Mountain = 'mountain',
-    Grevys = 'grevys'
-}
+export const ZebraTypeEnum = {
+    Plains: 'plains',
+    Mountain: 'mountain',
+    Grevys: 'grevys'
+} as const;
+
+export type ZebraTypeEnum = typeof ZebraTypeEnum[keyof typeof ZebraTypeEnum];
 
 
 /**
diff --git a/samples/client/petstore/typescript-axios/builds/with-interfaces/api.ts b/samples/client/petstore/typescript-axios/builds/with-interfaces/api.ts
index 986bfee5787..d808b5aa937 100644
--- a/samples/client/petstore/typescript-axios/builds/with-interfaces/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-interfaces/api.ts
@@ -109,15 +109,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -163,15 +161,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/with-node-imports/api.ts b/samples/client/petstore/typescript-axios/builds/with-node-imports/api.ts
index 81a0a296245..0cfec1ad4b3 100644
--- a/samples/client/petstore/typescript-axios/builds/with-node-imports/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-node-imports/api.ts
@@ -113,15 +113,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -167,15 +165,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/order.ts b/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/order.ts
index b2ad43c3e40..1ed788e1ec8 100644
--- a/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/order.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/order.ts
@@ -58,14 +58,12 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 
diff --git a/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/pet.ts b/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/pet.ts
index 14d646fe149..e32493df735 100644
--- a/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/pet.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-npm-version-and-separate-models-and-api/model/some/levels/deep/pet.ts
@@ -60,14 +60,12 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 
diff --git a/samples/client/petstore/typescript-axios/builds/with-npm-version/api.ts b/samples/client/petstore/typescript-axios/builds/with-npm-version/api.ts
index fd8ae456d7a..893802cbed3 100644
--- a/samples/client/petstore/typescript-axios/builds/with-npm-version/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-npm-version/api.ts
@@ -109,15 +109,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -163,15 +161,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/api.ts b/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/api.ts
index 3afadf82f36..5a06a70cb99 100644
--- a/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/api.ts
+++ b/samples/client/petstore/typescript-axios/builds/with-single-request-parameters/api.ts
@@ -109,15 +109,13 @@ export interface Order {
     'complete'?: boolean;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum OrderStatusEnum {
-    Placed = 'placed',
-    Approved = 'approved',
-    Delivered = 'delivered'
-}
+export const OrderStatusEnum = {
+    Placed: 'placed',
+    Approved: 'approved',
+    Delivered: 'delivered'
+} as const;
+
+export type OrderStatusEnum = typeof OrderStatusEnum[keyof typeof OrderStatusEnum];
 
 /**
  * A pet for sale in the pet store
@@ -163,15 +161,13 @@ export interface Pet {
     'status'?: PetStatusEnum;
 }
 
-/**
-    * @export
-    * @enum {string}
-    */
-export enum PetStatusEnum {
-    Available = 'available',
-    Pending = 'pending',
-    Sold = 'sold'
-}
+export const PetStatusEnum = {
+    Available: 'available',
+    Pending: 'pending',
+    Sold: 'sold'
+} as const;
+
+export type PetStatusEnum = typeof PetStatusEnum[keyof typeof PetStatusEnum];
 
 /**
  * A tag for a pet
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/.gitignore b/samples/client/petstore/typescript-axios/builds/with-string-enums/.gitignore
new file mode 100644
index 00000000000..149b5765472
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/.gitignore
@@ -0,0 +1,4 @@
+wwwroot/*.js
+node_modules
+typings
+dist
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/.npmignore b/samples/client/petstore/typescript-axios/builds/with-string-enums/.npmignore
new file mode 100644
index 00000000000..999d88df693
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/.npmignore
@@ -0,0 +1 @@
+# empty npmignore to ensure all required files (e.g., in the dist folder) are published by npm
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx/.openapi-generator-ignore b/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator-ignore
similarity index 78%
rename from samples/server/petstore/nancyfx/.openapi-generator-ignore
rename to samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator-ignore
index c5fa491b4c5..7484ee590a3 100644
--- a/samples/server/petstore/nancyfx/.openapi-generator-ignore
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator-ignore
@@ -1,11 +1,11 @@
-# Swagger Codegen Ignore
-# Generated by swagger-codegen https://github.com/swagger-api/swagger-codegen
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
 
 # Use this file to prevent files from being overwritten by the generator.
 # The patterns follow closely to .gitignore or .dockerignore.
 
 # As an example, the C# client generator defines ApiClient.cs.
-# You can make changes and tell Swagger Codgen to ignore just this file by uncommenting the following line:
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
 #ApiClient.cs
 
 # You can match any string of characters against a directory, file or extension with a single asterisk (*):
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator/FILES b/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator/FILES
new file mode 100644
index 00000000000..a80cd4f07b0
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator/FILES
@@ -0,0 +1,8 @@
+.gitignore
+.npmignore
+api.ts
+base.ts
+common.ts
+configuration.ts
+git_push.sh
+index.ts
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator/VERSION b/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/api.ts b/samples/client/petstore/typescript-axios/builds/with-string-enums/api.ts
new file mode 100644
index 00000000000..fd8ae456d7a
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/api.ts
@@ -0,0 +1,1816 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+import { Configuration } from './configuration';
+import globalAxios, { AxiosPromise, AxiosInstance, AxiosRequestConfig } from 'axios';
+// Some imports not used depending on template conditions
+// @ts-ignore
+import { DUMMY_BASE_URL, assertParamExists, setApiKeyToObject, setBasicAuthToObject, setBearerAuthToObject, setOAuthToObject, setSearchParams, serializeDataIfNeeded, toPathString, createRequestFunction } from './common';
+// @ts-ignore
+import { BASE_PATH, COLLECTION_FORMATS, RequestArgs, BaseAPI, RequiredError } from './base';
+
+/**
+ * Describes the result of uploading an image resource
+ * @export
+ * @interface ApiResponse
+ */
+export interface ApiResponse {
+    /**
+     * 
+     * @type {number}
+     * @memberof ApiResponse
+     */
+    'code'?: number;
+    /**
+     * 
+     * @type {string}
+     * @memberof ApiResponse
+     */
+    'type'?: string;
+    /**
+     * 
+     * @type {string}
+     * @memberof ApiResponse
+     */
+    'message'?: string;
+}
+/**
+ * A category for a pet
+ * @export
+ * @interface Category
+ */
+export interface Category {
+    /**
+     * 
+     * @type {number}
+     * @memberof Category
+     */
+    'id'?: number;
+    /**
+     * 
+     * @type {string}
+     * @memberof Category
+     */
+    'name'?: string;
+}
+/**
+ * An order for a pets from the pet store
+ * @export
+ * @interface Order
+ */
+export interface Order {
+    /**
+     * 
+     * @type {number}
+     * @memberof Order
+     */
+    'id'?: number;
+    /**
+     * 
+     * @type {number}
+     * @memberof Order
+     */
+    'petId'?: number;
+    /**
+     * 
+     * @type {number}
+     * @memberof Order
+     */
+    'quantity'?: number;
+    /**
+     * 
+     * @type {string}
+     * @memberof Order
+     */
+    'shipDate'?: string;
+    /**
+     * Order Status
+     * @type {string}
+     * @memberof Order
+     */
+    'status'?: OrderStatusEnum;
+    /**
+     * 
+     * @type {boolean}
+     * @memberof Order
+     */
+    'complete'?: boolean;
+}
+
+/**
+    * @export
+    * @enum {string}
+    */
+export enum OrderStatusEnum {
+    Placed = 'placed',
+    Approved = 'approved',
+    Delivered = 'delivered'
+}
+
+/**
+ * A pet for sale in the pet store
+ * @export
+ * @interface Pet
+ */
+export interface Pet {
+    /**
+     * 
+     * @type {number}
+     * @memberof Pet
+     */
+    'id'?: number;
+    /**
+     * 
+     * @type {Category}
+     * @memberof Pet
+     */
+    'category'?: Category;
+    /**
+     * 
+     * @type {string}
+     * @memberof Pet
+     */
+    'name': string;
+    /**
+     * 
+     * @type {Array<string>}
+     * @memberof Pet
+     */
+    'photoUrls': Array<string>;
+    /**
+     * 
+     * @type {Array<Tag>}
+     * @memberof Pet
+     */
+    'tags'?: Array<Tag>;
+    /**
+     * pet status in the store
+     * @type {string}
+     * @memberof Pet
+     */
+    'status'?: PetStatusEnum;
+}
+
+/**
+    * @export
+    * @enum {string}
+    */
+export enum PetStatusEnum {
+    Available = 'available',
+    Pending = 'pending',
+    Sold = 'sold'
+}
+
+/**
+ * A tag for a pet
+ * @export
+ * @interface Tag
+ */
+export interface Tag {
+    /**
+     * 
+     * @type {number}
+     * @memberof Tag
+     */
+    'id'?: number;
+    /**
+     * 
+     * @type {string}
+     * @memberof Tag
+     */
+    'name'?: string;
+}
+/**
+ * A User who is purchasing from the pet store
+ * @export
+ * @interface User
+ */
+export interface User {
+    /**
+     * 
+     * @type {number}
+     * @memberof User
+     */
+    'id'?: number;
+    /**
+     * 
+     * @type {string}
+     * @memberof User
+     */
+    'username'?: string;
+    /**
+     * 
+     * @type {string}
+     * @memberof User
+     */
+    'firstName'?: string;
+    /**
+     * 
+     * @type {string}
+     * @memberof User
+     */
+    'lastName'?: string;
+    /**
+     * 
+     * @type {string}
+     * @memberof User
+     */
+    'email'?: string;
+    /**
+     * 
+     * @type {string}
+     * @memberof User
+     */
+    'password'?: string;
+    /**
+     * 
+     * @type {string}
+     * @memberof User
+     */
+    'phone'?: string;
+    /**
+     * User Status
+     * @type {number}
+     * @memberof User
+     */
+    'userStatus'?: number;
+}
+
+/**
+ * PetApi - axios parameter creator
+ * @export
+ */
+export const PetApiAxiosParamCreator = function (configuration?: Configuration) {
+    return {
+        /**
+         * 
+         * @summary Add a new pet to the store
+         * @param {Pet} body Pet object that needs to be added to the store
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        addPet: async (body: Pet, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('addPet', 'body', body)
+            const localVarPath = `/pet`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Deletes a pet
+         * @param {number} petId Pet id to delete
+         * @param {string} [apiKey] 
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        deletePet: async (petId: number, apiKey?: string, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'petId' is not null or undefined
+            assertParamExists('deletePet', 'petId', petId)
+            const localVarPath = `/pet/{petId}`
+                .replace(`{${"petId"}}`, encodeURIComponent(String(petId)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'DELETE', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+            if (apiKey !== undefined && apiKey !== null) {
+                localVarHeaderParameter['api_key'] = String(apiKey);
+            }
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * Multiple status values can be provided with comma separated strings
+         * @summary Finds Pets by status
+         * @param {Array<'available' | 'pending' | 'sold'>} status Status values that need to be considered for filter
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        findPetsByStatus: async (status: Array<'available' | 'pending' | 'sold'>, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'status' is not null or undefined
+            assertParamExists('findPetsByStatus', 'status', status)
+            const localVarPath = `/pet/findByStatus`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+            if (status) {
+                localVarQueryParameter['status'] = status.join(COLLECTION_FORMATS.csv);
+            }
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+         * @summary Finds Pets by tags
+         * @param {Array<string>} tags Tags to filter by
+         * @param {*} [options] Override http request option.
+         * @deprecated
+         * @throws {RequiredError}
+         */
+        findPetsByTags: async (tags: Array<string>, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'tags' is not null or undefined
+            assertParamExists('findPetsByTags', 'tags', tags)
+            const localVarPath = `/pet/findByTags`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+            if (tags) {
+                localVarQueryParameter['tags'] = tags.join(COLLECTION_FORMATS.csv);
+            }
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * Returns a single pet
+         * @summary Find pet by ID
+         * @param {number} petId ID of pet to return
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getPetById: async (petId: number, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'petId' is not null or undefined
+            assertParamExists('getPetById', 'petId', petId)
+            const localVarPath = `/pet/{petId}`
+                .replace(`{${"petId"}}`, encodeURIComponent(String(petId)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication api_key required
+            await setApiKeyToObject(localVarHeaderParameter, "api_key", configuration)
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Update an existing pet
+         * @param {Pet} body Pet object that needs to be added to the store
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        updatePet: async (body: Pet, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('updatePet', 'body', body)
+            const localVarPath = `/pet`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'PUT', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Updates a pet in the store with form data
+         * @param {number} petId ID of pet that needs to be updated
+         * @param {string} [name] Updated name of the pet
+         * @param {string} [status] Updated status of the pet
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        updatePetWithForm: async (petId: number, name?: string, status?: string, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'petId' is not null or undefined
+            assertParamExists('updatePetWithForm', 'petId', petId)
+            const localVarPath = `/pet/{petId}`
+                .replace(`{${"petId"}}`, encodeURIComponent(String(petId)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+            const localVarFormParams = new URLSearchParams();
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+
+            if (name !== undefined) { 
+                localVarFormParams.set('name', name as any);
+            }
+    
+            if (status !== undefined) { 
+                localVarFormParams.set('status', status as any);
+            }
+    
+    
+            localVarHeaderParameter['Content-Type'] = 'application/x-www-form-urlencoded';
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = localVarFormParams.toString();
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary uploads an image
+         * @param {number} petId ID of pet to update
+         * @param {string} [additionalMetadata] Additional data to pass to server
+         * @param {any} [file] file to upload
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        uploadFile: async (petId: number, additionalMetadata?: string, file?: any, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'petId' is not null or undefined
+            assertParamExists('uploadFile', 'petId', petId)
+            const localVarPath = `/pet/{petId}/uploadImage`
+                .replace(`{${"petId"}}`, encodeURIComponent(String(petId)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+            const localVarFormParams = new ((configuration && configuration.formDataCtor) || FormData)();
+
+            // authentication petstore_auth required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "petstore_auth", ["write:pets", "read:pets"], configuration)
+
+
+            if (additionalMetadata !== undefined) { 
+                localVarFormParams.append('additionalMetadata', additionalMetadata as any);
+            }
+    
+            if (file !== undefined) { 
+                localVarFormParams.append('file', file as any);
+            }
+    
+    
+            localVarHeaderParameter['Content-Type'] = 'multipart/form-data';
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = localVarFormParams;
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+    }
+};
+
+/**
+ * PetApi - functional programming interface
+ * @export
+ */
+export const PetApiFp = function(configuration?: Configuration) {
+    const localVarAxiosParamCreator = PetApiAxiosParamCreator(configuration)
+    return {
+        /**
+         * 
+         * @summary Add a new pet to the store
+         * @param {Pet} body Pet object that needs to be added to the store
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async addPet(body: Pet, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.addPet(body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Deletes a pet
+         * @param {number} petId Pet id to delete
+         * @param {string} [apiKey] 
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async deletePet(petId: number, apiKey?: string, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.deletePet(petId, apiKey, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * Multiple status values can be provided with comma separated strings
+         * @summary Finds Pets by status
+         * @param {Array<'available' | 'pending' | 'sold'>} status Status values that need to be considered for filter
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<Array<Pet>>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.findPetsByStatus(status, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+         * @summary Finds Pets by tags
+         * @param {Array<string>} tags Tags to filter by
+         * @param {*} [options] Override http request option.
+         * @deprecated
+         * @throws {RequiredError}
+         */
+        async findPetsByTags(tags: Array<string>, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<Array<Pet>>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.findPetsByTags(tags, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * Returns a single pet
+         * @summary Find pet by ID
+         * @param {number} petId ID of pet to return
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async getPetById(petId: number, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<Pet>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.getPetById(petId, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Update an existing pet
+         * @param {Pet} body Pet object that needs to be added to the store
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async updatePet(body: Pet, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.updatePet(body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Updates a pet in the store with form data
+         * @param {number} petId ID of pet that needs to be updated
+         * @param {string} [name] Updated name of the pet
+         * @param {string} [status] Updated status of the pet
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async updatePetWithForm(petId: number, name?: string, status?: string, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.updatePetWithForm(petId, name, status, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary uploads an image
+         * @param {number} petId ID of pet to update
+         * @param {string} [additionalMetadata] Additional data to pass to server
+         * @param {any} [file] file to upload
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async uploadFile(petId: number, additionalMetadata?: string, file?: any, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<ApiResponse>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.uploadFile(petId, additionalMetadata, file, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+    }
+};
+
+/**
+ * PetApi - factory interface
+ * @export
+ */
+export const PetApiFactory = function (configuration?: Configuration, basePath?: string, axios?: AxiosInstance) {
+    const localVarFp = PetApiFp(configuration)
+    return {
+        /**
+         * 
+         * @summary Add a new pet to the store
+         * @param {Pet} body Pet object that needs to be added to the store
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        addPet(body: Pet, options?: any): AxiosPromise<void> {
+            return localVarFp.addPet(body, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Deletes a pet
+         * @param {number} petId Pet id to delete
+         * @param {string} [apiKey] 
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        deletePet(petId: number, apiKey?: string, options?: any): AxiosPromise<void> {
+            return localVarFp.deletePet(petId, apiKey, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * Multiple status values can be provided with comma separated strings
+         * @summary Finds Pets by status
+         * @param {Array<'available' | 'pending' | 'sold'>} status Status values that need to be considered for filter
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: any): AxiosPromise<Array<Pet>> {
+            return localVarFp.findPetsByStatus(status, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+         * @summary Finds Pets by tags
+         * @param {Array<string>} tags Tags to filter by
+         * @param {*} [options] Override http request option.
+         * @deprecated
+         * @throws {RequiredError}
+         */
+        findPetsByTags(tags: Array<string>, options?: any): AxiosPromise<Array<Pet>> {
+            return localVarFp.findPetsByTags(tags, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * Returns a single pet
+         * @summary Find pet by ID
+         * @param {number} petId ID of pet to return
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getPetById(petId: number, options?: any): AxiosPromise<Pet> {
+            return localVarFp.getPetById(petId, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Update an existing pet
+         * @param {Pet} body Pet object that needs to be added to the store
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        updatePet(body: Pet, options?: any): AxiosPromise<void> {
+            return localVarFp.updatePet(body, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Updates a pet in the store with form data
+         * @param {number} petId ID of pet that needs to be updated
+         * @param {string} [name] Updated name of the pet
+         * @param {string} [status] Updated status of the pet
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        updatePetWithForm(petId: number, name?: string, status?: string, options?: any): AxiosPromise<void> {
+            return localVarFp.updatePetWithForm(petId, name, status, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary uploads an image
+         * @param {number} petId ID of pet to update
+         * @param {string} [additionalMetadata] Additional data to pass to server
+         * @param {any} [file] file to upload
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        uploadFile(petId: number, additionalMetadata?: string, file?: any, options?: any): AxiosPromise<ApiResponse> {
+            return localVarFp.uploadFile(petId, additionalMetadata, file, options).then((request) => request(axios, basePath));
+        },
+    };
+};
+
+/**
+ * PetApi - object-oriented interface
+ * @export
+ * @class PetApi
+ * @extends {BaseAPI}
+ */
+export class PetApi extends BaseAPI {
+    /**
+     * 
+     * @summary Add a new pet to the store
+     * @param {Pet} body Pet object that needs to be added to the store
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public addPet(body: Pet, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).addPet(body, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Deletes a pet
+     * @param {number} petId Pet id to delete
+     * @param {string} [apiKey] 
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public deletePet(petId: number, apiKey?: string, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).deletePet(petId, apiKey, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * Multiple status values can be provided with comma separated strings
+     * @summary Finds Pets by status
+     * @param {Array<'available' | 'pending' | 'sold'>} status Status values that need to be considered for filter
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public findPetsByStatus(status: Array<'available' | 'pending' | 'sold'>, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).findPetsByStatus(status, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     * @summary Finds Pets by tags
+     * @param {Array<string>} tags Tags to filter by
+     * @param {*} [options] Override http request option.
+     * @deprecated
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public findPetsByTags(tags: Array<string>, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).findPetsByTags(tags, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * Returns a single pet
+     * @summary Find pet by ID
+     * @param {number} petId ID of pet to return
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public getPetById(petId: number, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).getPetById(petId, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Update an existing pet
+     * @param {Pet} body Pet object that needs to be added to the store
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public updatePet(body: Pet, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).updatePet(body, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Updates a pet in the store with form data
+     * @param {number} petId ID of pet that needs to be updated
+     * @param {string} [name] Updated name of the pet
+     * @param {string} [status] Updated status of the pet
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public updatePetWithForm(petId: number, name?: string, status?: string, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).updatePetWithForm(petId, name, status, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary uploads an image
+     * @param {number} petId ID of pet to update
+     * @param {string} [additionalMetadata] Additional data to pass to server
+     * @param {any} [file] file to upload
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof PetApi
+     */
+    public uploadFile(petId: number, additionalMetadata?: string, file?: any, options?: AxiosRequestConfig) {
+        return PetApiFp(this.configuration).uploadFile(petId, additionalMetadata, file, options).then((request) => request(this.axios, this.basePath));
+    }
+}
+
+
+/**
+ * StoreApi - axios parameter creator
+ * @export
+ */
+export const StoreApiAxiosParamCreator = function (configuration?: Configuration) {
+    return {
+        /**
+         * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+         * @summary Delete purchase order by ID
+         * @param {string} orderId ID of the order that needs to be deleted
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        deleteOrder: async (orderId: string, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'orderId' is not null or undefined
+            assertParamExists('deleteOrder', 'orderId', orderId)
+            const localVarPath = `/store/order/{orderId}`
+                .replace(`{${"orderId"}}`, encodeURIComponent(String(orderId)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'DELETE', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * Returns a map of status codes to quantities
+         * @summary Returns pet inventories by status
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getInventory: async (options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            const localVarPath = `/store/inventory`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            // authentication api_key required
+            await setApiKeyToObject(localVarHeaderParameter, "api_key", configuration)
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+         * @summary Find purchase order by ID
+         * @param {number} orderId ID of pet that needs to be fetched
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getOrderById: async (orderId: number, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'orderId' is not null or undefined
+            assertParamExists('getOrderById', 'orderId', orderId)
+            const localVarPath = `/store/order/{orderId}`
+                .replace(`{${"orderId"}}`, encodeURIComponent(String(orderId)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Place an order for a pet
+         * @param {Order} body order placed for purchasing the pet
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        placeOrder: async (body: Order, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('placeOrder', 'body', body)
+            const localVarPath = `/store/order`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+    }
+};
+
+/**
+ * StoreApi - functional programming interface
+ * @export
+ */
+export const StoreApiFp = function(configuration?: Configuration) {
+    const localVarAxiosParamCreator = StoreApiAxiosParamCreator(configuration)
+    return {
+        /**
+         * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+         * @summary Delete purchase order by ID
+         * @param {string} orderId ID of the order that needs to be deleted
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async deleteOrder(orderId: string, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.deleteOrder(orderId, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * Returns a map of status codes to quantities
+         * @summary Returns pet inventories by status
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async getInventory(options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<{ [key: string]: number; }>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.getInventory(options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+         * @summary Find purchase order by ID
+         * @param {number} orderId ID of pet that needs to be fetched
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async getOrderById(orderId: number, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<Order>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.getOrderById(orderId, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Place an order for a pet
+         * @param {Order} body order placed for purchasing the pet
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async placeOrder(body: Order, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<Order>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.placeOrder(body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+    }
+};
+
+/**
+ * StoreApi - factory interface
+ * @export
+ */
+export const StoreApiFactory = function (configuration?: Configuration, basePath?: string, axios?: AxiosInstance) {
+    const localVarFp = StoreApiFp(configuration)
+    return {
+        /**
+         * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+         * @summary Delete purchase order by ID
+         * @param {string} orderId ID of the order that needs to be deleted
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        deleteOrder(orderId: string, options?: any): AxiosPromise<void> {
+            return localVarFp.deleteOrder(orderId, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * Returns a map of status codes to quantities
+         * @summary Returns pet inventories by status
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getInventory(options?: any): AxiosPromise<{ [key: string]: number; }> {
+            return localVarFp.getInventory(options).then((request) => request(axios, basePath));
+        },
+        /**
+         * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+         * @summary Find purchase order by ID
+         * @param {number} orderId ID of pet that needs to be fetched
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getOrderById(orderId: number, options?: any): AxiosPromise<Order> {
+            return localVarFp.getOrderById(orderId, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Place an order for a pet
+         * @param {Order} body order placed for purchasing the pet
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        placeOrder(body: Order, options?: any): AxiosPromise<Order> {
+            return localVarFp.placeOrder(body, options).then((request) => request(axios, basePath));
+        },
+    };
+};
+
+/**
+ * StoreApi - object-oriented interface
+ * @export
+ * @class StoreApi
+ * @extends {BaseAPI}
+ */
+export class StoreApi extends BaseAPI {
+    /**
+     * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+     * @summary Delete purchase order by ID
+     * @param {string} orderId ID of the order that needs to be deleted
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof StoreApi
+     */
+    public deleteOrder(orderId: string, options?: AxiosRequestConfig) {
+        return StoreApiFp(this.configuration).deleteOrder(orderId, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * Returns a map of status codes to quantities
+     * @summary Returns pet inventories by status
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof StoreApi
+     */
+    public getInventory(options?: AxiosRequestConfig) {
+        return StoreApiFp(this.configuration).getInventory(options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+     * @summary Find purchase order by ID
+     * @param {number} orderId ID of pet that needs to be fetched
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof StoreApi
+     */
+    public getOrderById(orderId: number, options?: AxiosRequestConfig) {
+        return StoreApiFp(this.configuration).getOrderById(orderId, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Place an order for a pet
+     * @param {Order} body order placed for purchasing the pet
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof StoreApi
+     */
+    public placeOrder(body: Order, options?: AxiosRequestConfig) {
+        return StoreApiFp(this.configuration).placeOrder(body, options).then((request) => request(this.axios, this.basePath));
+    }
+}
+
+
+/**
+ * UserApi - axios parameter creator
+ * @export
+ */
+export const UserApiAxiosParamCreator = function (configuration?: Configuration) {
+    return {
+        /**
+         * This can only be done by the logged in user.
+         * @summary Create user
+         * @param {User} body Created user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        createUser: async (body: User, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('createUser', 'body', body)
+            const localVarPath = `/user`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Creates list of users with given input array
+         * @param {Array<User>} body List of user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        createUsersWithArrayInput: async (body: Array<User>, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('createUsersWithArrayInput', 'body', body)
+            const localVarPath = `/user/createWithArray`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Creates list of users with given input array
+         * @param {Array<User>} body List of user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        createUsersWithListInput: async (body: Array<User>, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('createUsersWithListInput', 'body', body)
+            const localVarPath = `/user/createWithList`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'POST', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * This can only be done by the logged in user.
+         * @summary Delete user
+         * @param {string} username The name that needs to be deleted
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        deleteUser: async (username: string, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'username' is not null or undefined
+            assertParamExists('deleteUser', 'username', username)
+            const localVarPath = `/user/{username}`
+                .replace(`{${"username"}}`, encodeURIComponent(String(username)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'DELETE', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Get user by user name
+         * @param {string} username The name that needs to be fetched. Use user1 for testing.
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getUserByName: async (username: string, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'username' is not null or undefined
+            assertParamExists('getUserByName', 'username', username)
+            const localVarPath = `/user/{username}`
+                .replace(`{${"username"}}`, encodeURIComponent(String(username)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Logs user into the system
+         * @param {string} username The user name for login
+         * @param {string} password The password for login in clear text
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        loginUser: async (username: string, password: string, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'username' is not null or undefined
+            assertParamExists('loginUser', 'username', username)
+            // verify required parameter 'password' is not null or undefined
+            assertParamExists('loginUser', 'password', password)
+            const localVarPath = `/user/login`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+            if (username !== undefined) {
+                localVarQueryParameter['username'] = username;
+            }
+
+            if (password !== undefined) {
+                localVarQueryParameter['password'] = password;
+            }
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * 
+         * @summary Logs out current logged in user session
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        logoutUser: async (options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            const localVarPath = `/user/logout`;
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'GET', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+        /**
+         * This can only be done by the logged in user.
+         * @summary Updated user
+         * @param {string} username name that need to be deleted
+         * @param {User} body Updated user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        updateUser: async (username: string, body: User, options: AxiosRequestConfig = {}): Promise<RequestArgs> => {
+            // verify required parameter 'username' is not null or undefined
+            assertParamExists('updateUser', 'username', username)
+            // verify required parameter 'body' is not null or undefined
+            assertParamExists('updateUser', 'body', body)
+            const localVarPath = `/user/{username}`
+                .replace(`{${"username"}}`, encodeURIComponent(String(username)));
+            // use dummy base URL string because the URL constructor only accepts absolute URLs.
+            const localVarUrlObj = new URL(localVarPath, DUMMY_BASE_URL);
+            let baseOptions;
+            if (configuration) {
+                baseOptions = configuration.baseOptions;
+            }
+
+            const localVarRequestOptions = { method: 'PUT', ...baseOptions, ...options};
+            const localVarHeaderParameter = {} as any;
+            const localVarQueryParameter = {} as any;
+
+
+    
+            localVarHeaderParameter['Content-Type'] = 'application/json';
+
+            setSearchParams(localVarUrlObj, localVarQueryParameter);
+            let headersFromBaseOptions = baseOptions && baseOptions.headers ? baseOptions.headers : {};
+            localVarRequestOptions.headers = {...localVarHeaderParameter, ...headersFromBaseOptions, ...options.headers};
+            localVarRequestOptions.data = serializeDataIfNeeded(body, localVarRequestOptions, configuration)
+
+            return {
+                url: toPathString(localVarUrlObj),
+                options: localVarRequestOptions,
+            };
+        },
+    }
+};
+
+/**
+ * UserApi - functional programming interface
+ * @export
+ */
+export const UserApiFp = function(configuration?: Configuration) {
+    const localVarAxiosParamCreator = UserApiAxiosParamCreator(configuration)
+    return {
+        /**
+         * This can only be done by the logged in user.
+         * @summary Create user
+         * @param {User} body Created user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async createUser(body: User, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.createUser(body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Creates list of users with given input array
+         * @param {Array<User>} body List of user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async createUsersWithArrayInput(body: Array<User>, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.createUsersWithArrayInput(body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Creates list of users with given input array
+         * @param {Array<User>} body List of user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async createUsersWithListInput(body: Array<User>, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.createUsersWithListInput(body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * This can only be done by the logged in user.
+         * @summary Delete user
+         * @param {string} username The name that needs to be deleted
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async deleteUser(username: string, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.deleteUser(username, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Get user by user name
+         * @param {string} username The name that needs to be fetched. Use user1 for testing.
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async getUserByName(username: string, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<User>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.getUserByName(username, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Logs user into the system
+         * @param {string} username The user name for login
+         * @param {string} password The password for login in clear text
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async loginUser(username: string, password: string, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<string>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.loginUser(username, password, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * 
+         * @summary Logs out current logged in user session
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async logoutUser(options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.logoutUser(options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+        /**
+         * This can only be done by the logged in user.
+         * @summary Updated user
+         * @param {string} username name that need to be deleted
+         * @param {User} body Updated user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        async updateUser(username: string, body: User, options?: AxiosRequestConfig): Promise<(axios?: AxiosInstance, basePath?: string) => AxiosPromise<void>> {
+            const localVarAxiosArgs = await localVarAxiosParamCreator.updateUser(username, body, options);
+            return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
+        },
+    }
+};
+
+/**
+ * UserApi - factory interface
+ * @export
+ */
+export const UserApiFactory = function (configuration?: Configuration, basePath?: string, axios?: AxiosInstance) {
+    const localVarFp = UserApiFp(configuration)
+    return {
+        /**
+         * This can only be done by the logged in user.
+         * @summary Create user
+         * @param {User} body Created user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        createUser(body: User, options?: any): AxiosPromise<void> {
+            return localVarFp.createUser(body, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Creates list of users with given input array
+         * @param {Array<User>} body List of user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        createUsersWithArrayInput(body: Array<User>, options?: any): AxiosPromise<void> {
+            return localVarFp.createUsersWithArrayInput(body, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Creates list of users with given input array
+         * @param {Array<User>} body List of user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        createUsersWithListInput(body: Array<User>, options?: any): AxiosPromise<void> {
+            return localVarFp.createUsersWithListInput(body, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * This can only be done by the logged in user.
+         * @summary Delete user
+         * @param {string} username The name that needs to be deleted
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        deleteUser(username: string, options?: any): AxiosPromise<void> {
+            return localVarFp.deleteUser(username, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Get user by user name
+         * @param {string} username The name that needs to be fetched. Use user1 for testing.
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        getUserByName(username: string, options?: any): AxiosPromise<User> {
+            return localVarFp.getUserByName(username, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Logs user into the system
+         * @param {string} username The user name for login
+         * @param {string} password The password for login in clear text
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        loginUser(username: string, password: string, options?: any): AxiosPromise<string> {
+            return localVarFp.loginUser(username, password, options).then((request) => request(axios, basePath));
+        },
+        /**
+         * 
+         * @summary Logs out current logged in user session
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        logoutUser(options?: any): AxiosPromise<void> {
+            return localVarFp.logoutUser(options).then((request) => request(axios, basePath));
+        },
+        /**
+         * This can only be done by the logged in user.
+         * @summary Updated user
+         * @param {string} username name that need to be deleted
+         * @param {User} body Updated user object
+         * @param {*} [options] Override http request option.
+         * @throws {RequiredError}
+         */
+        updateUser(username: string, body: User, options?: any): AxiosPromise<void> {
+            return localVarFp.updateUser(username, body, options).then((request) => request(axios, basePath));
+        },
+    };
+};
+
+/**
+ * UserApi - object-oriented interface
+ * @export
+ * @class UserApi
+ * @extends {BaseAPI}
+ */
+export class UserApi extends BaseAPI {
+    /**
+     * This can only be done by the logged in user.
+     * @summary Create user
+     * @param {User} body Created user object
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public createUser(body: User, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).createUser(body, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Creates list of users with given input array
+     * @param {Array<User>} body List of user object
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public createUsersWithArrayInput(body: Array<User>, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).createUsersWithArrayInput(body, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Creates list of users with given input array
+     * @param {Array<User>} body List of user object
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public createUsersWithListInput(body: Array<User>, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).createUsersWithListInput(body, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * This can only be done by the logged in user.
+     * @summary Delete user
+     * @param {string} username The name that needs to be deleted
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public deleteUser(username: string, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).deleteUser(username, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Get user by user name
+     * @param {string} username The name that needs to be fetched. Use user1 for testing.
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public getUserByName(username: string, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).getUserByName(username, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Logs user into the system
+     * @param {string} username The user name for login
+     * @param {string} password The password for login in clear text
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public loginUser(username: string, password: string, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).loginUser(username, password, options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * 
+     * @summary Logs out current logged in user session
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public logoutUser(options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).logoutUser(options).then((request) => request(this.axios, this.basePath));
+    }
+
+    /**
+     * This can only be done by the logged in user.
+     * @summary Updated user
+     * @param {string} username name that need to be deleted
+     * @param {User} body Updated user object
+     * @param {*} [options] Override http request option.
+     * @throws {RequiredError}
+     * @memberof UserApi
+     */
+    public updateUser(username: string, body: User, options?: AxiosRequestConfig) {
+        return UserApiFp(this.configuration).updateUser(username, body, options).then((request) => request(this.axios, this.basePath));
+    }
+}
+
+
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts b/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts
new file mode 100644
index 00000000000..e23d972eeb0
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/base.ts
@@ -0,0 +1,71 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+import { Configuration } from "./configuration";
+// Some imports not used depending on template conditions
+// @ts-ignore
+import globalAxios, { AxiosPromise, AxiosInstance, AxiosRequestConfig } from 'axios';
+
+export const BASE_PATH = "http://petstore.swagger.io/v2".replace(/\/+$/, "");
+
+/**
+ *
+ * @export
+ */
+export const COLLECTION_FORMATS = {
+    csv: ",",
+    ssv: " ",
+    tsv: "\t",
+    pipes: "|",
+};
+
+/**
+ *
+ * @export
+ * @interface RequestArgs
+ */
+export interface RequestArgs {
+    url: string;
+    options: AxiosRequestConfig;
+}
+
+/**
+ *
+ * @export
+ * @class BaseAPI
+ */
+export class BaseAPI {
+    protected configuration: Configuration | undefined;
+
+    constructor(configuration?: Configuration, protected basePath: string = BASE_PATH, protected axios: AxiosInstance = globalAxios) {
+        if (configuration) {
+            this.configuration = configuration;
+            this.basePath = configuration.basePath || this.basePath;
+        }
+    }
+};
+
+/**
+ *
+ * @export
+ * @class RequiredError
+ * @extends {Error}
+ */
+export class RequiredError extends Error {
+    name: "RequiredError" = "RequiredError";
+    constructor(public field: string, msg?: string) {
+        super(msg);
+    }
+}
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/common.ts b/samples/client/petstore/typescript-axios/builds/with-string-enums/common.ts
new file mode 100644
index 00000000000..1b1d3a4b7ae
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/common.ts
@@ -0,0 +1,138 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+import { Configuration } from "./configuration";
+import { RequiredError, RequestArgs } from "./base";
+import { AxiosInstance, AxiosResponse } from 'axios';
+
+/**
+ *
+ * @export
+ */
+export const DUMMY_BASE_URL = 'https://example.com'
+
+/**
+ *
+ * @throws {RequiredError}
+ * @export
+ */
+export const assertParamExists = function (functionName: string, paramName: string, paramValue: unknown) {
+    if (paramValue === null || paramValue === undefined) {
+        throw new RequiredError(paramName, `Required parameter ${paramName} was null or undefined when calling ${functionName}.`);
+    }
+}
+
+/**
+ *
+ * @export
+ */
+export const setApiKeyToObject = async function (object: any, keyParamName: string, configuration?: Configuration) {
+    if (configuration && configuration.apiKey) {
+        const localVarApiKeyValue = typeof configuration.apiKey === 'function'
+            ? await configuration.apiKey(keyParamName)
+            : await configuration.apiKey;
+        object[keyParamName] = localVarApiKeyValue;
+    }
+}
+
+/**
+ *
+ * @export
+ */
+export const setBasicAuthToObject = function (object: any, configuration?: Configuration) {
+    if (configuration && (configuration.username || configuration.password)) {
+        object["auth"] = { username: configuration.username, password: configuration.password };
+    }
+}
+
+/**
+ *
+ * @export
+ */
+export const setBearerAuthToObject = async function (object: any, configuration?: Configuration) {
+    if (configuration && configuration.accessToken) {
+        const accessToken = typeof configuration.accessToken === 'function'
+            ? await configuration.accessToken()
+            : await configuration.accessToken;
+        object["Authorization"] = "Bearer " + accessToken;
+    }
+}
+
+/**
+ *
+ * @export
+ */
+export const setOAuthToObject = async function (object: any, name: string, scopes: string[], configuration?: Configuration) {
+    if (configuration && configuration.accessToken) {
+        const localVarAccessTokenValue = typeof configuration.accessToken === 'function'
+            ? await configuration.accessToken(name, scopes)
+            : await configuration.accessToken;
+        object["Authorization"] = "Bearer " + localVarAccessTokenValue;
+    }
+}
+
+/**
+ *
+ * @export
+ */
+export const setSearchParams = function (url: URL, ...objects: any[]) {
+    const searchParams = new URLSearchParams(url.search);
+    for (const object of objects) {
+        for (const key in object) {
+            if (Array.isArray(object[key])) {
+                searchParams.delete(key);
+                for (const item of object[key]) {
+                    searchParams.append(key, item);
+                }
+            } else {
+                searchParams.set(key, object[key]);
+            }
+        }
+    }
+    url.search = searchParams.toString();
+}
+
+/**
+ *
+ * @export
+ */
+export const serializeDataIfNeeded = function (value: any, requestOptions: any, configuration?: Configuration) {
+    const nonString = typeof value !== 'string';
+    const needsSerialization = nonString && configuration && configuration.isJsonMime
+        ? configuration.isJsonMime(requestOptions.headers['Content-Type'])
+        : nonString;
+    return needsSerialization
+        ? JSON.stringify(value !== undefined ? value : {})
+        : (value || "");
+}
+
+/**
+ *
+ * @export
+ */
+export const toPathString = function (url: URL) {
+    return url.pathname + url.search + url.hash
+}
+
+/**
+ *
+ * @export
+ */
+export const createRequestFunction = function (axiosArgs: RequestArgs, globalAxios: AxiosInstance, BASE_PATH: string, configuration?: Configuration) {
+    return <T = unknown, R = AxiosResponse<T>>(axios: AxiosInstance = globalAxios, basePath: string = BASE_PATH) => {
+        const axiosRequestArgs = {...axiosArgs.options, url: (configuration?.basePath || basePath) + axiosArgs.url};
+        return axios.request<T, R>(axiosRequestArgs);
+    };
+}
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/configuration.ts b/samples/client/petstore/typescript-axios/builds/with-string-enums/configuration.ts
new file mode 100644
index 00000000000..b8780457121
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/configuration.ts
@@ -0,0 +1,101 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+export interface ConfigurationParameters {
+    apiKey?: string | Promise<string> | ((name: string) => string) | ((name: string) => Promise<string>);
+    username?: string;
+    password?: string;
+    accessToken?: string | Promise<string> | ((name?: string, scopes?: string[]) => string) | ((name?: string, scopes?: string[]) => Promise<string>);
+    basePath?: string;
+    baseOptions?: any;
+    formDataCtor?: new () => any;
+}
+
+export class Configuration {
+    /**
+     * parameter for apiKey security
+     * @param name security name
+     * @memberof Configuration
+     */
+    apiKey?: string | Promise<string> | ((name: string) => string) | ((name: string) => Promise<string>);
+    /**
+     * parameter for basic security
+     *
+     * @type {string}
+     * @memberof Configuration
+     */
+    username?: string;
+    /**
+     * parameter for basic security
+     *
+     * @type {string}
+     * @memberof Configuration
+     */
+    password?: string;
+    /**
+     * parameter for oauth2 security
+     * @param name security name
+     * @param scopes oauth2 scope
+     * @memberof Configuration
+     */
+    accessToken?: string | Promise<string> | ((name?: string, scopes?: string[]) => string) | ((name?: string, scopes?: string[]) => Promise<string>);
+    /**
+     * override base path
+     *
+     * @type {string}
+     * @memberof Configuration
+     */
+    basePath?: string;
+    /**
+     * base options for axios calls
+     *
+     * @type {any}
+     * @memberof Configuration
+     */
+    baseOptions?: any;
+    /**
+     * The FormData constructor that will be used to create multipart form data
+     * requests. You can inject this here so that execution environments that
+     * do not support the FormData class can still run the generated client.
+     *
+     * @type {new () => FormData}
+     */
+    formDataCtor?: new () => any;
+
+    constructor(param: ConfigurationParameters = {}) {
+        this.apiKey = param.apiKey;
+        this.username = param.username;
+        this.password = param.password;
+        this.accessToken = param.accessToken;
+        this.basePath = param.basePath;
+        this.baseOptions = param.baseOptions;
+        this.formDataCtor = param.formDataCtor;
+    }
+
+    /**
+     * Check if the given MIME is a JSON MIME.
+     * JSON MIME examples:
+     *   application/json
+     *   application/json; charset=UTF8
+     *   APPLICATION/JSON
+     *   application/vnd.company+json
+     * @param mime - MIME (Multipurpose Internet Mail Extensions)
+     * @return True if the given MIME is JSON, false otherwise.
+     */
+    public isJsonMime(mime: string): boolean {
+        const jsonMime: RegExp = new RegExp('^(application\/json|[^;/ \t]+\/[^;/ \t]+[+]json)[ \t]*(;.*)?$', 'i');
+        return mime !== null && (jsonMime.test(mime) || mime.toLowerCase() === 'application/json-patch+json');
+    }
+}
diff --git a/modules/openapi-generator/src/main/resources/swift4/git_push.sh.mustache b/samples/client/petstore/typescript-axios/builds/with-string-enums/git_push.sh
old mode 100755
new mode 100644
similarity index 92%
rename from modules/openapi-generator/src/main/resources/swift4/git_push.sh.mustache
rename to samples/client/petstore/typescript-axios/builds/with-string-enums/git_push.sh
index 0e3776ae6dd..f53a75d4fab
--- a/modules/openapi-generator/src/main/resources/swift4/git_push.sh.mustache
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/git_push.sh
@@ -9,22 +9,22 @@ release_note=$3
 git_host=$4
 
 if [ "$git_host" = "" ]; then
-    git_host="{{{gitHost}}}"
+    git_host="github.com"
     echo "[INFO] No command line input provided. Set \$git_host to $git_host"
 fi
 
 if [ "$git_user_id" = "" ]; then
-    git_user_id="{{{gitUserId}}}"
+    git_user_id="GIT_USER_ID"
     echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
 fi
 
 if [ "$git_repo_id" = "" ]; then
-    git_repo_id="{{{gitRepoId}}}"
+    git_repo_id="GIT_REPO_ID"
     echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
 fi
 
 if [ "$release_note" = "" ]; then
-    release_note="{{{releaseNote}}}"
+    release_note="Minor update"
     echo "[INFO] No command line input provided. Set \$release_note to $release_note"
 fi
 
diff --git a/samples/client/petstore/typescript-axios/builds/with-string-enums/index.ts b/samples/client/petstore/typescript-axios/builds/with-string-enums/index.ts
new file mode 100644
index 00000000000..ed3d348fdfe
--- /dev/null
+++ b/samples/client/petstore/typescript-axios/builds/with-string-enums/index.ts
@@ -0,0 +1,18 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+export * from "./api";
+export * from "./configuration";
+
diff --git a/samples/client/petstore/typescript-nestjs-v6-provided-in-root/builds/default/api/pet.service.ts b/samples/client/petstore/typescript-nestjs-v6-provided-in-root/builds/default/api/pet.service.ts
index d3300f3906a..5fa20c944db 100644
--- a/samples/client/petstore/typescript-nestjs-v6-provided-in-root/builds/default/api/pet.service.ts
+++ b/samples/client/petstore/typescript-nestjs-v6-provided-in-root/builds/default/api/pet.service.ts
@@ -153,8 +153,8 @@ export class PetService {
         }
 
         let queryParameters = {};
-        if (status !== undefined && status !== null) {
-            queryParameters['status'] = <any>status;
+        if (status) {
+            queryParameters['status'] = status.join(COLLECTION_FORMATS['csv']);
         }
 
         let headers = this.defaultHeaders;
@@ -203,8 +203,8 @@ export class PetService {
         }
 
         let queryParameters = {};
-        if (tags !== undefined && tags !== null) {
-            queryParameters['tags'] = <any>tags;
+        if (tags) {
+            queryParameters['tags'] = tags.join(COLLECTION_FORMATS['csv']);
         }
 
         let headers = this.defaultHeaders;
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/README.md b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/README.md
index f765717c5fe..5921adf7dcf 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/README.md
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/README.md
@@ -22,7 +22,7 @@ go get golang.org/x/net/context
 Put the package under your project folder and add the following in import:
 
 ```golang
-import sw "./x_auth_id_alias"
+import x_auth_id_alias "github.com/GIT_USER_ID/GIT_REPO_ID"
 ```
 
 To use a proxy, set the environment variable `HTTP_PROXY`:
@@ -40,7 +40,7 @@ Default configuration comes with `Servers` field that contains server objects as
 For using other server than the one defined on index 0 set context value `sw.ContextServerIndex` of type `int`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
+ctx := context.WithValue(context.Background(), x_auth_id_alias.ContextServerIndex, 1)
 ```
 
 ### Templated Server URL
@@ -48,7 +48,7 @@ ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
 Templated server URL is formatted using default variables from configuration or from context value `sw.ContextServerVariables` of type `map[string]string`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerVariables, map[string]string{
+ctx := context.WithValue(context.Background(), x_auth_id_alias.ContextServerVariables, map[string]string{
 	"basePath": "v2",
 })
 ```
@@ -62,10 +62,10 @@ An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
 Similar rules for overriding default operation server index and variables applies by using `sw.ContextOperationServerIndices` and `sw.ContextOperationServerVariables` context maps.
 
 ```
-ctx := context.WithValue(context.Background(), sw.ContextOperationServerIndices, map[string]int{
+ctx := context.WithValue(context.Background(), x_auth_id_alias.ContextOperationServerIndices, map[string]int{
 	"{classname}Service.{nickname}": 2,
 })
-ctx = context.WithValue(context.Background(), sw.ContextOperationServerVariables, map[string]map[string]string{
+ctx = context.WithValue(context.Background(), x_auth_id_alias.ContextOperationServerVariables, map[string]map[string]string{
 	"{classname}Service.{nickname}": {
 		"port": "8443",
 	},
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/api_usage.go b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/api_usage.go
index 6e891fbe6fa..8ba9a49d9d3 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/api_usage.go
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/api_usage.go
@@ -12,27 +12,27 @@ package x_auth_id_alias
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 // UsageApiService UsageApi service
 type UsageApiService service
 
 type ApiAnyKeyRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService *UsageApiService
 }
 
 
-func (r ApiAnyKeyRequest) Execute() (map[string]interface{}, *_nethttp.Response, error) {
+func (r ApiAnyKeyRequest) Execute() (map[string]interface{}, *http.Response, error) {
 	return r.ApiService.AnyKeyExecute(r)
 }
 
@@ -41,10 +41,10 @@ AnyKey Use any API key
 
 Use any API key
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiAnyKeyRequest
 */
-func (a *UsageApiService) AnyKey(ctx _context.Context) ApiAnyKeyRequest {
+func (a *UsageApiService) AnyKey(ctx context.Context) ApiAnyKeyRequest {
 	return ApiAnyKeyRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -53,9 +53,9 @@ func (a *UsageApiService) AnyKey(ctx _context.Context) ApiAnyKeyRequest {
 
 // Execute executes the request
 //  @return map[string]interface{}
-func (a *UsageApiService) AnyKeyExecute(r ApiAnyKeyRequest) (map[string]interface{}, *_nethttp.Response, error) {
+func (a *UsageApiService) AnyKeyExecute(r ApiAnyKeyRequest) (map[string]interface{}, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  map[string]interface{}
@@ -63,14 +63,14 @@ func (a *UsageApiService) AnyKeyExecute(r ApiAnyKeyRequest) (map[string]interfac
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UsageApiService.AnyKey")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/any"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -127,15 +127,15 @@ func (a *UsageApiService) AnyKeyExecute(r ApiAnyKeyRequest) (map[string]interfac
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -144,7 +144,7 @@ func (a *UsageApiService) AnyKeyExecute(r ApiAnyKeyRequest) (map[string]interfac
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -155,12 +155,12 @@ func (a *UsageApiService) AnyKeyExecute(r ApiAnyKeyRequest) (map[string]interfac
 }
 
 type ApiBothKeysRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService *UsageApiService
 }
 
 
-func (r ApiBothKeysRequest) Execute() (map[string]interface{}, *_nethttp.Response, error) {
+func (r ApiBothKeysRequest) Execute() (map[string]interface{}, *http.Response, error) {
 	return r.ApiService.BothKeysExecute(r)
 }
 
@@ -169,10 +169,10 @@ BothKeys Use both API keys
 
 Use both API keys
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiBothKeysRequest
 */
-func (a *UsageApiService) BothKeys(ctx _context.Context) ApiBothKeysRequest {
+func (a *UsageApiService) BothKeys(ctx context.Context) ApiBothKeysRequest {
 	return ApiBothKeysRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -181,9 +181,9 @@ func (a *UsageApiService) BothKeys(ctx _context.Context) ApiBothKeysRequest {
 
 // Execute executes the request
 //  @return map[string]interface{}
-func (a *UsageApiService) BothKeysExecute(r ApiBothKeysRequest) (map[string]interface{}, *_nethttp.Response, error) {
+func (a *UsageApiService) BothKeysExecute(r ApiBothKeysRequest) (map[string]interface{}, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  map[string]interface{}
@@ -191,14 +191,14 @@ func (a *UsageApiService) BothKeysExecute(r ApiBothKeysRequest) (map[string]inte
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UsageApiService.BothKeys")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/both"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -255,15 +255,15 @@ func (a *UsageApiService) BothKeysExecute(r ApiBothKeysRequest) (map[string]inte
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -272,7 +272,7 @@ func (a *UsageApiService) BothKeysExecute(r ApiBothKeysRequest) (map[string]inte
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -283,12 +283,12 @@ func (a *UsageApiService) BothKeysExecute(r ApiBothKeysRequest) (map[string]inte
 }
 
 type ApiKeyInHeaderRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService *UsageApiService
 }
 
 
-func (r ApiKeyInHeaderRequest) Execute() (map[string]interface{}, *_nethttp.Response, error) {
+func (r ApiKeyInHeaderRequest) Execute() (map[string]interface{}, *http.Response, error) {
 	return r.ApiService.KeyInHeaderExecute(r)
 }
 
@@ -297,10 +297,10 @@ KeyInHeader Use API key in header
 
 Use API key in header
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiKeyInHeaderRequest
 */
-func (a *UsageApiService) KeyInHeader(ctx _context.Context) ApiKeyInHeaderRequest {
+func (a *UsageApiService) KeyInHeader(ctx context.Context) ApiKeyInHeaderRequest {
 	return ApiKeyInHeaderRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -309,9 +309,9 @@ func (a *UsageApiService) KeyInHeader(ctx _context.Context) ApiKeyInHeaderReques
 
 // Execute executes the request
 //  @return map[string]interface{}
-func (a *UsageApiService) KeyInHeaderExecute(r ApiKeyInHeaderRequest) (map[string]interface{}, *_nethttp.Response, error) {
+func (a *UsageApiService) KeyInHeaderExecute(r ApiKeyInHeaderRequest) (map[string]interface{}, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  map[string]interface{}
@@ -319,14 +319,14 @@ func (a *UsageApiService) KeyInHeaderExecute(r ApiKeyInHeaderRequest) (map[strin
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UsageApiService.KeyInHeader")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/header"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -369,15 +369,15 @@ func (a *UsageApiService) KeyInHeaderExecute(r ApiKeyInHeaderRequest) (map[strin
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -386,7 +386,7 @@ func (a *UsageApiService) KeyInHeaderExecute(r ApiKeyInHeaderRequest) (map[strin
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -397,12 +397,12 @@ func (a *UsageApiService) KeyInHeaderExecute(r ApiKeyInHeaderRequest) (map[strin
 }
 
 type ApiKeyInQueryRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService *UsageApiService
 }
 
 
-func (r ApiKeyInQueryRequest) Execute() (map[string]interface{}, *_nethttp.Response, error) {
+func (r ApiKeyInQueryRequest) Execute() (map[string]interface{}, *http.Response, error) {
 	return r.ApiService.KeyInQueryExecute(r)
 }
 
@@ -411,10 +411,10 @@ KeyInQuery Use API key in query
 
 Use API key in query
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiKeyInQueryRequest
 */
-func (a *UsageApiService) KeyInQuery(ctx _context.Context) ApiKeyInQueryRequest {
+func (a *UsageApiService) KeyInQuery(ctx context.Context) ApiKeyInQueryRequest {
 	return ApiKeyInQueryRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -423,9 +423,9 @@ func (a *UsageApiService) KeyInQuery(ctx _context.Context) ApiKeyInQueryRequest
 
 // Execute executes the request
 //  @return map[string]interface{}
-func (a *UsageApiService) KeyInQueryExecute(r ApiKeyInQueryRequest) (map[string]interface{}, *_nethttp.Response, error) {
+func (a *UsageApiService) KeyInQueryExecute(r ApiKeyInQueryRequest) (map[string]interface{}, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  map[string]interface{}
@@ -433,14 +433,14 @@ func (a *UsageApiService) KeyInQueryExecute(r ApiKeyInQueryRequest) (map[string]
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UsageApiService.KeyInQuery")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/query"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -483,15 +483,15 @@ func (a *UsageApiService) KeyInQueryExecute(r ApiKeyInQueryRequest) (map[string]
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -500,7 +500,7 @@ func (a *UsageApiService) KeyInQueryExecute(r ApiKeyInQueryRequest) (map[string]
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/client.go b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/client.go
index f7a7c368cbf..d538f243533 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/client.go
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/client.go
@@ -422,6 +422,13 @@ func reportError(format string, a ...interface{}) error {
 	return fmt.Errorf(format, a...)
 }
 
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
 // Set request body from an interface{}
 func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
 	if bodyBuf == nil {
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/docs/UsageApi.md b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/docs/UsageApi.md
index 6322c976a68..f6d814dedf2 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/docs/UsageApi.md
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/docs/UsageApi.md
@@ -34,8 +34,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UsageApi.AnyKey(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UsageApi.AnyKey(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UsageApi.AnyKey``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -95,8 +95,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UsageApi.BothKeys(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UsageApi.BothKeys(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UsageApi.BothKeys``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -156,8 +156,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UsageApi.KeyInHeader(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UsageApi.KeyInHeader(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UsageApi.KeyInHeader``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -217,8 +217,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UsageApi.KeyInQuery(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UsageApi.KeyInQuery(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UsageApi.KeyInQuery``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/go.mod b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/go.mod
index 0f43de9ebb2..ead32606c72 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/go.mod
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/go-experimental/go.mod
@@ -3,5 +3,5 @@ module github.com/GIT_USER_ID/GIT_REPO_ID
 go 1.13
 
 require (
-	golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99
+	golang.org/x/oauth2 v0.0.0-20210323180902-22b0adad7558
 )
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java b/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
index 7f844074052..e6bb7d3fad5 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
@@ -1036,7 +1036,12 @@ public class ApiClient extends JavaTimeFormatter {
       }
     }
 
-    Invocation.Builder invocationBuilder = target.request().accept(accept);
+    Invocation.Builder invocationBuilder;
+    if (accept != null) {
+      invocationBuilder = target.request().accept(accept);
+    } else {
+      invocationBuilder = target.request();
+    }
 
     for (Entry<String, String> entry : cookieParams.entrySet()) {
       String value = entry.getValue();
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 9ed3230bd36..455b7a6101a 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/python/README.md b/samples/openapi3/client/extensions/x-auth-id-alias/python/README.md
index 86eababfa80..72ef1f59d6c 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/python/README.md
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/python/README.md
@@ -9,7 +9,7 @@ This Python package is automatically generated by the [OpenAPI Generator](https:
 
 ## Requirements.
 
-Python >= 3.6
+Python >=3.6
 
 ## Installation & Usage
 ### pip install
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api/usage_api.py b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api/usage_api.py
index b636697b0c4..9f3775456e0 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api/usage_api.py
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api/usage_api.py
@@ -243,6 +243,10 @@ class UsageApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -274,6 +278,9 @@ class UsageApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -309,6 +316,10 @@ class UsageApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -340,6 +351,9 @@ class UsageApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -375,6 +389,10 @@ class UsageApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -406,6 +424,9 @@ class UsageApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -441,6 +462,10 @@ class UsageApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -472,6 +497,9 @@ class UsageApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py
index 0da46122279..e77be7a5319 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py
@@ -673,7 +673,8 @@ class Endpoint(object):
             '_return_http_data_only',
             '_check_input_type',
             '_check_return_type',
-            '_content_type'
+            '_content_type',
+            '_spec_property_naming'
         ])
         self.params_map['nullable'].extend(['_request_timeout'])
         self.validations = root_map['validations']
@@ -687,6 +688,7 @@ class Endpoint(object):
             '_return_http_data_only': (bool,),
             '_check_input_type': (bool,),
             '_check_return_type': (bool,),
+            '_spec_property_naming': (bool,),
             '_content_type': (none_type, str)
         }
         self.openapi_types.update(extra_types)
@@ -723,7 +725,7 @@ class Endpoint(object):
                 value,
                 self.openapi_types[key],
                 [key],
-                False,
+                kwargs['_spec_property_naming'],
                 kwargs['_check_input_type'],
                 configuration=self.api_client.configuration
             )
@@ -751,11 +753,11 @@ class Endpoint(object):
                 base_name = self.attribute_map[param_name]
                 if (param_location == 'form' and
                         self.openapi_types[param_name] == (file_type,)):
-                    params['file'][param_name] = [param_value]
+                    params['file'][base_name] = [param_value]
                 elif (param_location == 'form' and
                         self.openapi_types[param_name] == ([file_type],)):
                     # param_value is already a list
-                    params['file'][param_name] = param_value
+                    params['file'][base_name] = param_value
                 elif param_location in {'form', 'query'}:
                     param_value_full = (base_name, param_value)
                     params[param_location].append(param_value_full)
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/model_utils.py b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/model_utils.py
index 023d770fe6a..38a28ca2089 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/model_utils.py
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/model_utils.py
@@ -1657,6 +1657,7 @@ def model_to_dict(model_instance, serialize=True):
             attribute_map
     """
     result = {}
+    extract_item = lambda item: (item[0], model_to_dict(item[1], serialize=serialize)) if hasattr(item[1], '_data_store') else item
 
     model_instances = [model_instance]
     if model_instance._composed_schemas:
@@ -1686,14 +1687,17 @@ def model_to_dict(model_instance, serialize=True):
                            res.append(v)
                        elif isinstance(v, ModelSimple):
                            res.append(v.value)
+                       elif isinstance(v, dict):
+                           res.append(dict(map(
+                               extract_item,
+                               v.items()
+                           )))
                        else:
                            res.append(model_to_dict(v, serialize=serialize))
                    result[attr] = res
             elif isinstance(value, dict):
                 result[attr] = dict(map(
-                    lambda item: (item[0],
-                                  model_to_dict(item[1], serialize=serialize))
-                    if hasattr(item[1], '_data_store') else item,
+                    extract_item,
                     value.items()
                 ))
             elif isinstance(value, ModelSimple):
diff --git a/samples/openapi3/client/features/dynamic-servers/python/README.md b/samples/openapi3/client/features/dynamic-servers/python/README.md
index df93218ea4b..7d9ade3fca6 100644
--- a/samples/openapi3/client/features/dynamic-servers/python/README.md
+++ b/samples/openapi3/client/features/dynamic-servers/python/README.md
@@ -9,7 +9,7 @@ This Python package is automatically generated by the [OpenAPI Generator](https:
 
 ## Requirements.
 
-Python >= 3.6
+Python >=3.6
 
 ## Installation & Usage
 ### pip install
diff --git a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api/usage_api.py b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api/usage_api.py
index ec975f752c6..f71f533ceec 100644
--- a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api/usage_api.py
+++ b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api/usage_api.py
@@ -198,6 +198,10 @@ class UsageApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -229,6 +233,9 @@ class UsageApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -264,6 +271,10 @@ class UsageApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -295,6 +306,9 @@ class UsageApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py
index a7d12d3e3c1..e38f7442f7b 100644
--- a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py
+++ b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py
@@ -673,7 +673,8 @@ class Endpoint(object):
             '_return_http_data_only',
             '_check_input_type',
             '_check_return_type',
-            '_content_type'
+            '_content_type',
+            '_spec_property_naming'
         ])
         self.params_map['nullable'].extend(['_request_timeout'])
         self.validations = root_map['validations']
@@ -687,6 +688,7 @@ class Endpoint(object):
             '_return_http_data_only': (bool,),
             '_check_input_type': (bool,),
             '_check_return_type': (bool,),
+            '_spec_property_naming': (bool,),
             '_content_type': (none_type, str)
         }
         self.openapi_types.update(extra_types)
@@ -723,7 +725,7 @@ class Endpoint(object):
                 value,
                 self.openapi_types[key],
                 [key],
-                False,
+                kwargs['_spec_property_naming'],
                 kwargs['_check_input_type'],
                 configuration=self.api_client.configuration
             )
@@ -751,11 +753,11 @@ class Endpoint(object):
                 base_name = self.attribute_map[param_name]
                 if (param_location == 'form' and
                         self.openapi_types[param_name] == (file_type,)):
-                    params['file'][param_name] = [param_value]
+                    params['file'][base_name] = [param_value]
                 elif (param_location == 'form' and
                         self.openapi_types[param_name] == ([file_type],)):
                     # param_value is already a list
-                    params['file'][param_name] = param_value
+                    params['file'][base_name] = param_value
                 elif param_location in {'form', 'query'}:
                     param_value_full = (base_name, param_value)
                     params[param_location].append(param_value_full)
diff --git a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/model_utils.py b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/model_utils.py
index f4b73e17079..d76884daf88 100644
--- a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/model_utils.py
+++ b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/model_utils.py
@@ -1657,6 +1657,7 @@ def model_to_dict(model_instance, serialize=True):
             attribute_map
     """
     result = {}
+    extract_item = lambda item: (item[0], model_to_dict(item[1], serialize=serialize)) if hasattr(item[1], '_data_store') else item
 
     model_instances = [model_instance]
     if model_instance._composed_schemas:
@@ -1686,14 +1687,17 @@ def model_to_dict(model_instance, serialize=True):
                            res.append(v)
                        elif isinstance(v, ModelSimple):
                            res.append(v.value)
+                       elif isinstance(v, dict):
+                           res.append(dict(map(
+                               extract_item,
+                               v.items()
+                           )))
                        else:
                            res.append(model_to_dict(v, serialize=serialize))
                    result[attr] = res
             elif isinstance(value, dict):
                 result[attr] = dict(map(
-                    lambda item: (item[0],
-                                  model_to_dict(item[1], serialize=serialize))
-                    if hasattr(item[1], '_data_store') else item,
+                    extract_item,
                     value.items()
                 ))
             elif isinstance(value, ModelSimple):
diff --git a/samples/openapi3/client/petstore/go/auth_test.go b/samples/openapi3/client/petstore/go/auth_test.go
index c56d64e5e51..52f5875f637 100644
--- a/samples/openapi3/client/petstore/go/auth_test.go
+++ b/samples/openapi3/client/petstore/go/auth_test.go
@@ -10,7 +10,7 @@ import (
 
 	"golang.org/x/oauth2"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 func TestOAuth2(t *testing.T) {
@@ -39,7 +39,7 @@ func TestOAuth2(t *testing.T) {
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Pet(newPet).Execute()
 
@@ -74,7 +74,7 @@ func TestBasicAuth(t *testing.T) {
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(auth).Pet(newPet).Execute()
 
@@ -104,7 +104,7 @@ func TestAccessToken(t *testing.T) {
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(nil).Pet(newPet).Execute()
 
@@ -130,11 +130,11 @@ func TestAccessToken(t *testing.T) {
 }
 
 func TestAPIKeyNoPrefix(t *testing.T) {
-	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": sw.APIKey{Key: "TEST123"}})
+	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": {Key: "TEST123"}})
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Pet(newPet).Execute()
 
@@ -165,11 +165,11 @@ func TestAPIKeyNoPrefix(t *testing.T) {
 }
 
 func TestAPIKeyWithPrefix(t *testing.T) {
-	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": sw.APIKey{Key: "TEST123", Prefix: "Bearer"}})
+	auth := context.WithValue(context.Background(), sw.ContextAPIKeys, map[string]sw.APIKey{"api_key": {Key: "TEST123", Prefix: "Bearer"}})
 
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(nil).Pet(newPet).Execute()
 
@@ -202,7 +202,7 @@ func TestAPIKeyWithPrefix(t *testing.T) {
 func TestDefaultHeader(t *testing.T) {
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Pet(newPet).Execute()
 
diff --git a/samples/openapi3/client/petstore/go/fake_api_test.go b/samples/openapi3/client/petstore/go/fake_api_test.go
index 97910bf3cf7..b25af45ee6c 100644
--- a/samples/openapi3/client/petstore/go/fake_api_test.go
+++ b/samples/openapi3/client/petstore/go/fake_api_test.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"testing"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 // TestPutBodyWithFileSchema ensures a model with the name 'File'
@@ -15,7 +15,7 @@ func TestPutBodyWithFileSchema(t *testing.T) {
 
 	schema := sw.FileSchemaTestClass{
 		File:  &sw.File{SourceURI: sw.PtrString("https://example.com/image.png")},
-		Files: &[]sw.File{{SourceURI: sw.PtrString("https://example.com/image.png")}}}
+		Files: []sw.File{{SourceURI: sw.PtrString("https://example.com/image.png")}}}
 
 	r, err := client.FakeApi.TestBodyWithFileSchema(context.Background()).FileSchemaTestClass(schema).Execute()
 
diff --git a/samples/openapi3/client/petstore/go/go-petstore/README.md b/samples/openapi3/client/petstore/go/go-petstore/README.md
index 64d951b11c0..10f8ee9f436 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/README.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/README.md
@@ -22,7 +22,7 @@ go get golang.org/x/net/context
 Put the package under your project folder and add the following in import:
 
 ```golang
-import sw "./petstore"
+import petstore "github.com/GIT_USER_ID/GIT_REPO_ID"
 ```
 
 To use a proxy, set the environment variable `HTTP_PROXY`:
@@ -40,7 +40,7 @@ Default configuration comes with `Servers` field that contains server objects as
 For using other server than the one defined on index 0 set context value `sw.ContextServerIndex` of type `int`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
+ctx := context.WithValue(context.Background(), petstore.ContextServerIndex, 1)
 ```
 
 ### Templated Server URL
@@ -48,7 +48,7 @@ ctx := context.WithValue(context.Background(), sw.ContextServerIndex, 1)
 Templated server URL is formatted using default variables from configuration or from context value `sw.ContextServerVariables` of type `map[string]string`.
 
 ```golang
-ctx := context.WithValue(context.Background(), sw.ContextServerVariables, map[string]string{
+ctx := context.WithValue(context.Background(), petstore.ContextServerVariables, map[string]string{
 	"basePath": "v2",
 })
 ```
@@ -62,10 +62,10 @@ An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
 Similar rules for overriding default operation server index and variables applies by using `sw.ContextOperationServerIndices` and `sw.ContextOperationServerVariables` context maps.
 
 ```
-ctx := context.WithValue(context.Background(), sw.ContextOperationServerIndices, map[string]int{
+ctx := context.WithValue(context.Background(), petstore.ContextOperationServerIndices, map[string]int{
 	"{classname}Service.{nickname}": 2,
 })
-ctx = context.WithValue(context.Background(), sw.ContextOperationServerVariables, map[string]map[string]string{
+ctx = context.WithValue(context.Background(), petstore.ContextOperationServerVariables, map[string]map[string]string{
 	"{classname}Service.{nickname}": {
 		"port": "8443",
 	},
@@ -206,7 +206,7 @@ Note, each API key must be added to a map of `map[string]APIKey` where the key i
 Example
 
 ```golang
-auth := context.WithValue(context.Background(), sw.ContextAccessToken, "BEARERTOKENSTRING")
+auth := context.WithValue(context.Background(), sw.ContextAccessToken, "BEARER_TOKEN_STRING")
 r, err := client.Service.Operation(auth, args)
 ```
 
@@ -233,7 +233,7 @@ r, err := client.Service.Operation(auth, args)
 Example
 
 ```golang
-	authConfig := sw.HttpSignatureAuth{
+	authConfig := client.HttpSignatureAuth{
 		KeyId:                "my-key-id",
 		PrivateKeyPath:       "rsa.pem",
 		Passphrase:           "my-passphrase",
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_another_fake.go b/samples/openapi3/client/petstore/go/go-petstore/api_another_fake.go
index 640c21d7250..d1ac2900c4c 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_another_fake.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_another_fake.go
@@ -12,15 +12,15 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type AnotherFakeApi interface {
@@ -30,21 +30,21 @@ type AnotherFakeApi interface {
 
 	To test special tags and operation ID starting with number
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCall123TestSpecialTagsRequest
 	*/
-	Call123TestSpecialTags(ctx _context.Context) ApiCall123TestSpecialTagsRequest
+	Call123TestSpecialTags(ctx context.Context) ApiCall123TestSpecialTagsRequest
 
 	// Call123TestSpecialTagsExecute executes the request
 	//  @return Client
-	Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (Client, *_nethttp.Response, error)
+	Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (*Client, *http.Response, error)
 }
 
 // AnotherFakeApiService AnotherFakeApi service
 type AnotherFakeApiService service
 
 type ApiCall123TestSpecialTagsRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService AnotherFakeApi
 	client *Client
 }
@@ -55,7 +55,7 @@ func (r ApiCall123TestSpecialTagsRequest) Client(client Client) ApiCall123TestSp
 	return r
 }
 
-func (r ApiCall123TestSpecialTagsRequest) Execute() (Client, *_nethttp.Response, error) {
+func (r ApiCall123TestSpecialTagsRequest) Execute() (*Client, *http.Response, error) {
 	return r.ApiService.Call123TestSpecialTagsExecute(r)
 }
 
@@ -64,10 +64,10 @@ Call123TestSpecialTags To test special tags
 
 To test special tags and operation ID starting with number
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCall123TestSpecialTagsRequest
 */
-func (a *AnotherFakeApiService) Call123TestSpecialTags(ctx _context.Context) ApiCall123TestSpecialTagsRequest {
+func (a *AnotherFakeApiService) Call123TestSpecialTags(ctx context.Context) ApiCall123TestSpecialTagsRequest {
 	return ApiCall123TestSpecialTagsRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -76,24 +76,24 @@ func (a *AnotherFakeApiService) Call123TestSpecialTags(ctx _context.Context) Api
 
 // Execute executes the request
 //  @return Client
-func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (Client, *_nethttp.Response, error) {
+func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSpecialTagsRequest) (*Client, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPatch
+		localVarHTTPMethod   = http.MethodPatch
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Client
+		localVarReturnValue  *Client
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "AnotherFakeApiService.Call123TestSpecialTags")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/another-fake/dummy"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.client == nil {
 		return localVarReturnValue, nil, reportError("client is required and must be specified")
 	}
@@ -127,15 +127,15 @@ func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSp
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -144,7 +144,7 @@ func (a *AnotherFakeApiService) Call123TestSpecialTagsExecute(r ApiCall123TestSp
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_default.go b/samples/openapi3/client/petstore/go/go-petstore/api_default.go
index be637eceddf..f5cd2374541 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_default.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_default.go
@@ -12,15 +12,15 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type DefaultApi interface {
@@ -28,36 +28,36 @@ type DefaultApi interface {
 	/*
 	FooGet Method for FooGet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFooGetRequest
 	*/
-	FooGet(ctx _context.Context) ApiFooGetRequest
+	FooGet(ctx context.Context) ApiFooGetRequest
 
 	// FooGetExecute executes the request
 	//  @return InlineResponseDefault
-	FooGetExecute(r ApiFooGetRequest) (InlineResponseDefault, *_nethttp.Response, error)
+	FooGetExecute(r ApiFooGetRequest) (*InlineResponseDefault, *http.Response, error)
 }
 
 // DefaultApiService DefaultApi service
 type DefaultApiService service
 
 type ApiFooGetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService DefaultApi
 }
 
 
-func (r ApiFooGetRequest) Execute() (InlineResponseDefault, *_nethttp.Response, error) {
+func (r ApiFooGetRequest) Execute() (*InlineResponseDefault, *http.Response, error) {
 	return r.ApiService.FooGetExecute(r)
 }
 
 /*
 FooGet Method for FooGet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFooGetRequest
 */
-func (a *DefaultApiService) FooGet(ctx _context.Context) ApiFooGetRequest {
+func (a *DefaultApiService) FooGet(ctx context.Context) ApiFooGetRequest {
 	return ApiFooGetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -66,24 +66,24 @@ func (a *DefaultApiService) FooGet(ctx _context.Context) ApiFooGetRequest {
 
 // Execute executes the request
 //  @return InlineResponseDefault
-func (a *DefaultApiService) FooGetExecute(r ApiFooGetRequest) (InlineResponseDefault, *_nethttp.Response, error) {
+func (a *DefaultApiService) FooGetExecute(r ApiFooGetRequest) (*InlineResponseDefault, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  InlineResponseDefault
+		localVarReturnValue  *InlineResponseDefault
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "DefaultApiService.FooGet")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/foo"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -112,15 +112,15 @@ func (a *DefaultApiService) FooGetExecute(r ApiFooGetRequest) (InlineResponseDef
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -156,7 +156,7 @@ func (a *DefaultApiService) FooGetExecute(r ApiFooGetRequest) (InlineResponseDef
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_fake.go b/samples/openapi3/client/petstore/go/go-petstore/api_fake.go
index a2cb81b7fea..1f4a8802ab0 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_fake.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_fake.go
@@ -12,10 +12,10 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"os"
 	"time"
 	"reflect"
@@ -23,7 +23,7 @@ import (
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type FakeApi interface {
@@ -31,108 +31,108 @@ type FakeApi interface {
 	/*
 	FakeHealthGet Health check endpoint
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeHealthGetRequest
 	*/
-	FakeHealthGet(ctx _context.Context) ApiFakeHealthGetRequest
+	FakeHealthGet(ctx context.Context) ApiFakeHealthGetRequest
 
 	// FakeHealthGetExecute executes the request
 	//  @return HealthCheckResult
-	FakeHealthGetExecute(r ApiFakeHealthGetRequest) (HealthCheckResult, *_nethttp.Response, error)
+	FakeHealthGetExecute(r ApiFakeHealthGetRequest) (*HealthCheckResult, *http.Response, error)
 
 	/*
 	FakeOuterBooleanSerialize Method for FakeOuterBooleanSerialize
 
 	Test serialization of outer boolean types
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterBooleanSerializeRequest
 	*/
-	FakeOuterBooleanSerialize(ctx _context.Context) ApiFakeOuterBooleanSerializeRequest
+	FakeOuterBooleanSerialize(ctx context.Context) ApiFakeOuterBooleanSerializeRequest
 
 	// FakeOuterBooleanSerializeExecute executes the request
 	//  @return bool
-	FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *_nethttp.Response, error)
+	FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *http.Response, error)
 
 	/*
 	FakeOuterCompositeSerialize Method for FakeOuterCompositeSerialize
 
 	Test serialization of object with outer number type
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterCompositeSerializeRequest
 	*/
-	FakeOuterCompositeSerialize(ctx _context.Context) ApiFakeOuterCompositeSerializeRequest
+	FakeOuterCompositeSerialize(ctx context.Context) ApiFakeOuterCompositeSerializeRequest
 
 	// FakeOuterCompositeSerializeExecute executes the request
 	//  @return OuterComposite
-	FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (OuterComposite, *_nethttp.Response, error)
+	FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (*OuterComposite, *http.Response, error)
 
 	/*
 	FakeOuterNumberSerialize Method for FakeOuterNumberSerialize
 
 	Test serialization of outer number types
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterNumberSerializeRequest
 	*/
-	FakeOuterNumberSerialize(ctx _context.Context) ApiFakeOuterNumberSerializeRequest
+	FakeOuterNumberSerialize(ctx context.Context) ApiFakeOuterNumberSerializeRequest
 
 	// FakeOuterNumberSerializeExecute executes the request
 	//  @return float32
-	FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *_nethttp.Response, error)
+	FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *http.Response, error)
 
 	/*
 	FakeOuterStringSerialize Method for FakeOuterStringSerialize
 
 	Test serialization of outer string types
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFakeOuterStringSerializeRequest
 	*/
-	FakeOuterStringSerialize(ctx _context.Context) ApiFakeOuterStringSerializeRequest
+	FakeOuterStringSerialize(ctx context.Context) ApiFakeOuterStringSerializeRequest
 
 	// FakeOuterStringSerializeExecute executes the request
 	//  @return string
-	FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *_nethttp.Response, error)
+	FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *http.Response, error)
 
 	/*
 	TestBodyWithFileSchema Method for TestBodyWithFileSchema
 
 	For this test, the body for this request much reference a schema named `File`.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestBodyWithFileSchemaRequest
 	*/
-	TestBodyWithFileSchema(ctx _context.Context) ApiTestBodyWithFileSchemaRequest
+	TestBodyWithFileSchema(ctx context.Context) ApiTestBodyWithFileSchemaRequest
 
 	// TestBodyWithFileSchemaExecute executes the request
-	TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*_nethttp.Response, error)
+	TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*http.Response, error)
 
 	/*
 	TestBodyWithQueryParams Method for TestBodyWithQueryParams
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestBodyWithQueryParamsRequest
 	*/
-	TestBodyWithQueryParams(ctx _context.Context) ApiTestBodyWithQueryParamsRequest
+	TestBodyWithQueryParams(ctx context.Context) ApiTestBodyWithQueryParamsRequest
 
 	// TestBodyWithQueryParamsExecute executes the request
-	TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*_nethttp.Response, error)
+	TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*http.Response, error)
 
 	/*
 	TestClientModel To test \"client\" model
 
 	To test "client" model
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestClientModelRequest
 	*/
-	TestClientModel(ctx _context.Context) ApiTestClientModelRequest
+	TestClientModel(ctx context.Context) ApiTestClientModelRequest
 
 	// TestClientModelExecute executes the request
 	//  @return Client
-	TestClientModelExecute(r ApiTestClientModelRequest) (Client, *_nethttp.Response, error)
+	TestClientModelExecute(r ApiTestClientModelRequest) (*Client, *http.Response, error)
 
 	/*
 	TestEndpointParameters Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
@@ -143,110 +143,110 @@ type FakeApi interface {
 가짜 엔드 포인트
 
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestEndpointParametersRequest
 	*/
-	TestEndpointParameters(ctx _context.Context) ApiTestEndpointParametersRequest
+	TestEndpointParameters(ctx context.Context) ApiTestEndpointParametersRequest
 
 	// TestEndpointParametersExecute executes the request
-	TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*_nethttp.Response, error)
+	TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*http.Response, error)
 
 	/*
 	TestEnumParameters To test enum parameters
 
 	To test enum parameters
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestEnumParametersRequest
 	*/
-	TestEnumParameters(ctx _context.Context) ApiTestEnumParametersRequest
+	TestEnumParameters(ctx context.Context) ApiTestEnumParametersRequest
 
 	// TestEnumParametersExecute executes the request
-	TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*_nethttp.Response, error)
+	TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*http.Response, error)
 
 	/*
 	TestGroupParameters Fake endpoint to test group parameters (optional)
 
 	Fake endpoint to test group parameters (optional)
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestGroupParametersRequest
 	*/
-	TestGroupParameters(ctx _context.Context) ApiTestGroupParametersRequest
+	TestGroupParameters(ctx context.Context) ApiTestGroupParametersRequest
 
 	// TestGroupParametersExecute executes the request
-	TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*_nethttp.Response, error)
+	TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*http.Response, error)
 
 	/*
 	TestInlineAdditionalProperties test inline additionalProperties
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestInlineAdditionalPropertiesRequest
 	*/
-	TestInlineAdditionalProperties(ctx _context.Context) ApiTestInlineAdditionalPropertiesRequest
+	TestInlineAdditionalProperties(ctx context.Context) ApiTestInlineAdditionalPropertiesRequest
 
 	// TestInlineAdditionalPropertiesExecute executes the request
-	TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*_nethttp.Response, error)
+	TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*http.Response, error)
 
 	/*
 	TestJsonFormData test json serialization of form data
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestJsonFormDataRequest
 	*/
-	TestJsonFormData(ctx _context.Context) ApiTestJsonFormDataRequest
+	TestJsonFormData(ctx context.Context) ApiTestJsonFormDataRequest
 
 	// TestJsonFormDataExecute executes the request
-	TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*_nethttp.Response, error)
+	TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*http.Response, error)
 
 	/*
 	TestQueryParameterCollectionFormat Method for TestQueryParameterCollectionFormat
 
 	To test the collection format in query parameters
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestQueryParameterCollectionFormatRequest
 	*/
-	TestQueryParameterCollectionFormat(ctx _context.Context) ApiTestQueryParameterCollectionFormatRequest
+	TestQueryParameterCollectionFormat(ctx context.Context) ApiTestQueryParameterCollectionFormatRequest
 
 	// TestQueryParameterCollectionFormatExecute executes the request
-	TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*_nethttp.Response, error)
+	TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*http.Response, error)
 
 	/*
 	TestUniqueItemsHeaderAndQueryParameterCollectionFormat Method for TestUniqueItemsHeaderAndQueryParameterCollectionFormat
 
 	To test unique items in header and query parameters
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest
 	*/
-	TestUniqueItemsHeaderAndQueryParameterCollectionFormat(ctx _context.Context) ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest
+	TestUniqueItemsHeaderAndQueryParameterCollectionFormat(ctx context.Context) ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest
 
 	// TestUniqueItemsHeaderAndQueryParameterCollectionFormatExecute executes the request
 	//  @return []Pet
-	TestUniqueItemsHeaderAndQueryParameterCollectionFormatExecute(r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) ([]Pet, *_nethttp.Response, error)
+	TestUniqueItemsHeaderAndQueryParameterCollectionFormatExecute(r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) ([]Pet, *http.Response, error)
 }
 
 // FakeApiService FakeApi service
 type FakeApiService service
 
 type ApiFakeHealthGetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 }
 
 
-func (r ApiFakeHealthGetRequest) Execute() (HealthCheckResult, *_nethttp.Response, error) {
+func (r ApiFakeHealthGetRequest) Execute() (*HealthCheckResult, *http.Response, error) {
 	return r.ApiService.FakeHealthGetExecute(r)
 }
 
 /*
 FakeHealthGet Health check endpoint
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeHealthGetRequest
 */
-func (a *FakeApiService) FakeHealthGet(ctx _context.Context) ApiFakeHealthGetRequest {
+func (a *FakeApiService) FakeHealthGet(ctx context.Context) ApiFakeHealthGetRequest {
 	return ApiFakeHealthGetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -255,24 +255,24 @@ func (a *FakeApiService) FakeHealthGet(ctx _context.Context) ApiFakeHealthGetReq
 
 // Execute executes the request
 //  @return HealthCheckResult
-func (a *FakeApiService) FakeHealthGetExecute(r ApiFakeHealthGetRequest) (HealthCheckResult, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeHealthGetExecute(r ApiFakeHealthGetRequest) (*HealthCheckResult, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  HealthCheckResult
+		localVarReturnValue  *HealthCheckResult
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeHealthGet")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/health"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -301,15 +301,15 @@ func (a *FakeApiService) FakeHealthGetExecute(r ApiFakeHealthGetRequest) (Health
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -318,7 +318,7 @@ func (a *FakeApiService) FakeHealthGetExecute(r ApiFakeHealthGetRequest) (Health
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -329,7 +329,7 @@ func (a *FakeApiService) FakeHealthGetExecute(r ApiFakeHealthGetRequest) (Health
 }
 
 type ApiFakeOuterBooleanSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *bool
 }
@@ -340,7 +340,7 @@ func (r ApiFakeOuterBooleanSerializeRequest) Body(body bool) ApiFakeOuterBoolean
 	return r
 }
 
-func (r ApiFakeOuterBooleanSerializeRequest) Execute() (bool, *_nethttp.Response, error) {
+func (r ApiFakeOuterBooleanSerializeRequest) Execute() (bool, *http.Response, error) {
 	return r.ApiService.FakeOuterBooleanSerializeExecute(r)
 }
 
@@ -349,10 +349,10 @@ FakeOuterBooleanSerialize Method for FakeOuterBooleanSerialize
 
 Test serialization of outer boolean types
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterBooleanSerializeRequest
 */
-func (a *FakeApiService) FakeOuterBooleanSerialize(ctx _context.Context) ApiFakeOuterBooleanSerializeRequest {
+func (a *FakeApiService) FakeOuterBooleanSerialize(ctx context.Context) ApiFakeOuterBooleanSerializeRequest {
 	return ApiFakeOuterBooleanSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -361,9 +361,9 @@ func (a *FakeApiService) FakeOuterBooleanSerialize(ctx _context.Context) ApiFake
 
 // Execute executes the request
 //  @return bool
-func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanSerializeRequest) (bool, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  bool
@@ -371,14 +371,14 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterBooleanSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/boolean"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"application/json"}
@@ -409,15 +409,15 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -426,7 +426,7 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -437,7 +437,7 @@ func (a *FakeApiService) FakeOuterBooleanSerializeExecute(r ApiFakeOuterBooleanS
 }
 
 type ApiFakeOuterCompositeSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	outerComposite *OuterComposite
 }
@@ -448,7 +448,7 @@ func (r ApiFakeOuterCompositeSerializeRequest) OuterComposite(outerComposite Out
 	return r
 }
 
-func (r ApiFakeOuterCompositeSerializeRequest) Execute() (OuterComposite, *_nethttp.Response, error) {
+func (r ApiFakeOuterCompositeSerializeRequest) Execute() (*OuterComposite, *http.Response, error) {
 	return r.ApiService.FakeOuterCompositeSerializeExecute(r)
 }
 
@@ -457,10 +457,10 @@ FakeOuterCompositeSerialize Method for FakeOuterCompositeSerialize
 
 Test serialization of object with outer number type
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterCompositeSerializeRequest
 */
-func (a *FakeApiService) FakeOuterCompositeSerialize(ctx _context.Context) ApiFakeOuterCompositeSerializeRequest {
+func (a *FakeApiService) FakeOuterCompositeSerialize(ctx context.Context) ApiFakeOuterCompositeSerializeRequest {
 	return ApiFakeOuterCompositeSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -469,24 +469,24 @@ func (a *FakeApiService) FakeOuterCompositeSerialize(ctx _context.Context) ApiFa
 
 // Execute executes the request
 //  @return OuterComposite
-func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (OuterComposite, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompositeSerializeRequest) (*OuterComposite, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  OuterComposite
+		localVarReturnValue  *OuterComposite
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterCompositeSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/composite"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"application/json"}
@@ -517,15 +517,15 @@ func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompos
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -534,7 +534,7 @@ func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompos
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -545,7 +545,7 @@ func (a *FakeApiService) FakeOuterCompositeSerializeExecute(r ApiFakeOuterCompos
 }
 
 type ApiFakeOuterNumberSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *float32
 }
@@ -556,7 +556,7 @@ func (r ApiFakeOuterNumberSerializeRequest) Body(body float32) ApiFakeOuterNumbe
 	return r
 }
 
-func (r ApiFakeOuterNumberSerializeRequest) Execute() (float32, *_nethttp.Response, error) {
+func (r ApiFakeOuterNumberSerializeRequest) Execute() (float32, *http.Response, error) {
 	return r.ApiService.FakeOuterNumberSerializeExecute(r)
 }
 
@@ -565,10 +565,10 @@ FakeOuterNumberSerialize Method for FakeOuterNumberSerialize
 
 Test serialization of outer number types
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterNumberSerializeRequest
 */
-func (a *FakeApiService) FakeOuterNumberSerialize(ctx _context.Context) ApiFakeOuterNumberSerializeRequest {
+func (a *FakeApiService) FakeOuterNumberSerialize(ctx context.Context) ApiFakeOuterNumberSerializeRequest {
 	return ApiFakeOuterNumberSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -577,9 +577,9 @@ func (a *FakeApiService) FakeOuterNumberSerialize(ctx _context.Context) ApiFakeO
 
 // Execute executes the request
 //  @return float32
-func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSerializeRequest) (float32, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  float32
@@ -587,14 +587,14 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterNumberSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/number"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"application/json"}
@@ -625,15 +625,15 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -642,7 +642,7 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -653,7 +653,7 @@ func (a *FakeApiService) FakeOuterNumberSerializeExecute(r ApiFakeOuterNumberSer
 }
 
 type ApiFakeOuterStringSerializeRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	body *string
 }
@@ -664,7 +664,7 @@ func (r ApiFakeOuterStringSerializeRequest) Body(body string) ApiFakeOuterString
 	return r
 }
 
-func (r ApiFakeOuterStringSerializeRequest) Execute() (string, *_nethttp.Response, error) {
+func (r ApiFakeOuterStringSerializeRequest) Execute() (string, *http.Response, error) {
 	return r.ApiService.FakeOuterStringSerializeExecute(r)
 }
 
@@ -673,10 +673,10 @@ FakeOuterStringSerialize Method for FakeOuterStringSerialize
 
 Test serialization of outer string types
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFakeOuterStringSerializeRequest
 */
-func (a *FakeApiService) FakeOuterStringSerialize(ctx _context.Context) ApiFakeOuterStringSerializeRequest {
+func (a *FakeApiService) FakeOuterStringSerialize(ctx context.Context) ApiFakeOuterStringSerializeRequest {
 	return ApiFakeOuterStringSerializeRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -685,9 +685,9 @@ func (a *FakeApiService) FakeOuterStringSerialize(ctx _context.Context) ApiFakeO
 
 // Execute executes the request
 //  @return string
-func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *_nethttp.Response, error) {
+func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSerializeRequest) (string, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  string
@@ -695,14 +695,14 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.FakeOuterStringSerialize")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/outer/string"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"application/json"}
@@ -733,15 +733,15 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -750,7 +750,7 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -761,7 +761,7 @@ func (a *FakeApiService) FakeOuterStringSerializeExecute(r ApiFakeOuterStringSer
 }
 
 type ApiTestBodyWithFileSchemaRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	fileSchemaTestClass *FileSchemaTestClass
 }
@@ -771,7 +771,7 @@ func (r ApiTestBodyWithFileSchemaRequest) FileSchemaTestClass(fileSchemaTestClas
 	return r
 }
 
-func (r ApiTestBodyWithFileSchemaRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestBodyWithFileSchemaRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestBodyWithFileSchemaExecute(r)
 }
 
@@ -780,10 +780,10 @@ TestBodyWithFileSchema Method for TestBodyWithFileSchema
 
 For this test, the body for this request much reference a schema named `File`.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestBodyWithFileSchemaRequest
 */
-func (a *FakeApiService) TestBodyWithFileSchema(ctx _context.Context) ApiTestBodyWithFileSchemaRequest {
+func (a *FakeApiService) TestBodyWithFileSchema(ctx context.Context) ApiTestBodyWithFileSchemaRequest {
 	return ApiTestBodyWithFileSchemaRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -791,23 +791,23 @@ func (a *FakeApiService) TestBodyWithFileSchema(ctx _context.Context) ApiTestBod
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSchemaRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestBodyWithFileSchema")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/body-with-file-schema"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.fileSchemaTestClass == nil {
 		return nil, reportError("fileSchemaTestClass is required and must be specified")
 	}
@@ -841,15 +841,15 @@ func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSche
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -860,7 +860,7 @@ func (a *FakeApiService) TestBodyWithFileSchemaExecute(r ApiTestBodyWithFileSche
 }
 
 type ApiTestBodyWithQueryParamsRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	query *string
 	user *User
@@ -875,17 +875,17 @@ func (r ApiTestBodyWithQueryParamsRequest) User(user User) ApiTestBodyWithQueryP
 	return r
 }
 
-func (r ApiTestBodyWithQueryParamsRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestBodyWithQueryParamsRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestBodyWithQueryParamsExecute(r)
 }
 
 /*
 TestBodyWithQueryParams Method for TestBodyWithQueryParams
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestBodyWithQueryParamsRequest
 */
-func (a *FakeApiService) TestBodyWithQueryParams(ctx _context.Context) ApiTestBodyWithQueryParamsRequest {
+func (a *FakeApiService) TestBodyWithQueryParams(ctx context.Context) ApiTestBodyWithQueryParamsRequest {
 	return ApiTestBodyWithQueryParamsRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -893,23 +893,23 @@ func (a *FakeApiService) TestBodyWithQueryParams(ctx _context.Context) ApiTestBo
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryParamsRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestBodyWithQueryParams")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/body-with-query-params"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.query == nil {
 		return nil, reportError("query is required and must be specified")
 	}
@@ -947,15 +947,15 @@ func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryPa
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -966,7 +966,7 @@ func (a *FakeApiService) TestBodyWithQueryParamsExecute(r ApiTestBodyWithQueryPa
 }
 
 type ApiTestClientModelRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	client *Client
 }
@@ -977,7 +977,7 @@ func (r ApiTestClientModelRequest) Client(client Client) ApiTestClientModelReque
 	return r
 }
 
-func (r ApiTestClientModelRequest) Execute() (Client, *_nethttp.Response, error) {
+func (r ApiTestClientModelRequest) Execute() (*Client, *http.Response, error) {
 	return r.ApiService.TestClientModelExecute(r)
 }
 
@@ -986,10 +986,10 @@ TestClientModel To test \"client\" model
 
 To test "client" model
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestClientModelRequest
 */
-func (a *FakeApiService) TestClientModel(ctx _context.Context) ApiTestClientModelRequest {
+func (a *FakeApiService) TestClientModel(ctx context.Context) ApiTestClientModelRequest {
 	return ApiTestClientModelRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -998,24 +998,24 @@ func (a *FakeApiService) TestClientModel(ctx _context.Context) ApiTestClientMode
 
 // Execute executes the request
 //  @return Client
-func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Client, *_nethttp.Response, error) {
+func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (*Client, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPatch
+		localVarHTTPMethod   = http.MethodPatch
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Client
+		localVarReturnValue  *Client
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestClientModel")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.client == nil {
 		return localVarReturnValue, nil, reportError("client is required and must be specified")
 	}
@@ -1049,15 +1049,15 @@ func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Cl
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1066,7 +1066,7 @@ func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Cl
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -1077,7 +1077,7 @@ func (a *FakeApiService) TestClientModelExecute(r ApiTestClientModelRequest) (Cl
 }
 
 type ApiTestEndpointParametersRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	number *float32
 	double *float64
@@ -1166,7 +1166,7 @@ func (r ApiTestEndpointParametersRequest) Callback(callback string) ApiTestEndpo
 	return r
 }
 
-func (r ApiTestEndpointParametersRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestEndpointParametersRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestEndpointParametersExecute(r)
 }
 
@@ -1179,10 +1179,10 @@ Fake endpoint for testing various parameters
 가짜 엔드 포인트
 
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestEndpointParametersRequest
 */
-func (a *FakeApiService) TestEndpointParameters(ctx _context.Context) ApiTestEndpointParametersRequest {
+func (a *FakeApiService) TestEndpointParameters(ctx context.Context) ApiTestEndpointParametersRequest {
 	return ApiTestEndpointParametersRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1190,23 +1190,23 @@ func (a *FakeApiService) TestEndpointParameters(ctx _context.Context) ApiTestEnd
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParametersRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestEndpointParameters")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.number == nil {
 		return nil, reportError("number is required and must be specified")
 	}
@@ -1279,7 +1279,7 @@ func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParamete
 		binaryLocalVarFile = *r.binary
 	}
 	if binaryLocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll(binaryLocalVarFile)
+		fbs, _ := ioutil.ReadAll(binaryLocalVarFile)
 		binaryLocalVarFileBytes = fbs
 		binaryLocalVarFileName = binaryLocalVarFile.Name()
 		binaryLocalVarFile.Close()
@@ -1307,15 +1307,15 @@ func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParamete
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1326,7 +1326,7 @@ func (a *FakeApiService) TestEndpointParametersExecute(r ApiTestEndpointParamete
 }
 
 type ApiTestEnumParametersRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	enumHeaderStringArray *[]string
 	enumHeaderString *string
@@ -1379,7 +1379,7 @@ func (r ApiTestEnumParametersRequest) EnumFormString(enumFormString string) ApiT
 	return r
 }
 
-func (r ApiTestEnumParametersRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestEnumParametersRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestEnumParametersExecute(r)
 }
 
@@ -1388,10 +1388,10 @@ TestEnumParameters To test enum parameters
 
 To test enum parameters
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestEnumParametersRequest
 */
-func (a *FakeApiService) TestEnumParameters(ctx _context.Context) ApiTestEnumParametersRequest {
+func (a *FakeApiService) TestEnumParameters(ctx context.Context) ApiTestEnumParametersRequest {
 	return ApiTestEnumParametersRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1399,23 +1399,23 @@ func (a *FakeApiService) TestEnumParameters(ctx _context.Context) ApiTestEnumPar
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestEnumParameters")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	if r.enumQueryStringArray != nil {
 		t := *r.enumQueryStringArray
@@ -1476,15 +1476,15 @@ func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersReques
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1495,7 +1495,7 @@ func (a *FakeApiService) TestEnumParametersExecute(r ApiTestEnumParametersReques
 }
 
 type ApiTestGroupParametersRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	requiredStringGroup *int32
 	requiredBooleanGroup *bool
@@ -1536,7 +1536,7 @@ func (r ApiTestGroupParametersRequest) Int64Group(int64Group int64) ApiTestGroup
 	return r
 }
 
-func (r ApiTestGroupParametersRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestGroupParametersRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestGroupParametersExecute(r)
 }
 
@@ -1545,10 +1545,10 @@ TestGroupParameters Fake endpoint to test group parameters (optional)
 
 Fake endpoint to test group parameters (optional)
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestGroupParametersRequest
 */
-func (a *FakeApiService) TestGroupParameters(ctx _context.Context) ApiTestGroupParametersRequest {
+func (a *FakeApiService) TestGroupParameters(ctx context.Context) ApiTestGroupParametersRequest {
 	return ApiTestGroupParametersRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1556,23 +1556,23 @@ func (a *FakeApiService) TestGroupParameters(ctx _context.Context) ApiTestGroupP
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestGroupParameters")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.requiredStringGroup == nil {
 		return nil, reportError("requiredStringGroup is required and must be specified")
 	}
@@ -1622,15 +1622,15 @@ func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequ
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1641,7 +1641,7 @@ func (a *FakeApiService) TestGroupParametersExecute(r ApiTestGroupParametersRequ
 }
 
 type ApiTestInlineAdditionalPropertiesRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	requestBody *map[string]string
 }
@@ -1652,17 +1652,17 @@ func (r ApiTestInlineAdditionalPropertiesRequest) RequestBody(requestBody map[st
 	return r
 }
 
-func (r ApiTestInlineAdditionalPropertiesRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestInlineAdditionalPropertiesRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestInlineAdditionalPropertiesExecute(r)
 }
 
 /*
 TestInlineAdditionalProperties test inline additionalProperties
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestInlineAdditionalPropertiesRequest
 */
-func (a *FakeApiService) TestInlineAdditionalProperties(ctx _context.Context) ApiTestInlineAdditionalPropertiesRequest {
+func (a *FakeApiService) TestInlineAdditionalProperties(ctx context.Context) ApiTestInlineAdditionalPropertiesRequest {
 	return ApiTestInlineAdditionalPropertiesRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1670,23 +1670,23 @@ func (a *FakeApiService) TestInlineAdditionalProperties(ctx _context.Context) Ap
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAdditionalPropertiesRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestInlineAdditionalProperties")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/inline-additionalProperties"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.requestBody == nil {
 		return nil, reportError("requestBody is required and must be specified")
 	}
@@ -1720,15 +1720,15 @@ func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAd
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1739,7 +1739,7 @@ func (a *FakeApiService) TestInlineAdditionalPropertiesExecute(r ApiTestInlineAd
 }
 
 type ApiTestJsonFormDataRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	param *string
 	param2 *string
@@ -1756,17 +1756,17 @@ func (r ApiTestJsonFormDataRequest) Param2(param2 string) ApiTestJsonFormDataReq
 	return r
 }
 
-func (r ApiTestJsonFormDataRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestJsonFormDataRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestJsonFormDataExecute(r)
 }
 
 /*
 TestJsonFormData test json serialization of form data
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestJsonFormDataRequest
 */
-func (a *FakeApiService) TestJsonFormData(ctx _context.Context) ApiTestJsonFormDataRequest {
+func (a *FakeApiService) TestJsonFormData(ctx context.Context) ApiTestJsonFormDataRequest {
 	return ApiTestJsonFormDataRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1774,23 +1774,23 @@ func (a *FakeApiService) TestJsonFormData(ctx _context.Context) ApiTestJsonFormD
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestJsonFormData")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/jsonFormData"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.param == nil {
 		return nil, reportError("param is required and must be specified")
 	}
@@ -1827,15 +1827,15 @@ func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1846,7 +1846,7 @@ func (a *FakeApiService) TestJsonFormDataExecute(r ApiTestJsonFormDataRequest) (
 }
 
 type ApiTestQueryParameterCollectionFormatRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	pipe *[]string
 	ioutil *[]string
@@ -1876,7 +1876,7 @@ func (r ApiTestQueryParameterCollectionFormatRequest) Context(context []string)
 	return r
 }
 
-func (r ApiTestQueryParameterCollectionFormatRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiTestQueryParameterCollectionFormatRequest) Execute() (*http.Response, error) {
 	return r.ApiService.TestQueryParameterCollectionFormatExecute(r)
 }
 
@@ -1885,10 +1885,10 @@ TestQueryParameterCollectionFormat Method for TestQueryParameterCollectionFormat
 
 To test the collection format in query parameters
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestQueryParameterCollectionFormatRequest
 */
-func (a *FakeApiService) TestQueryParameterCollectionFormat(ctx _context.Context) ApiTestQueryParameterCollectionFormatRequest {
+func (a *FakeApiService) TestQueryParameterCollectionFormat(ctx context.Context) ApiTestQueryParameterCollectionFormatRequest {
 	return ApiTestQueryParameterCollectionFormatRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1896,23 +1896,23 @@ func (a *FakeApiService) TestQueryParameterCollectionFormat(ctx _context.Context
 }
 
 // Execute executes the request
-func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*_nethttp.Response, error) {
+func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQueryParameterCollectionFormatRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestQueryParameterCollectionFormat")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/test-query-parameters"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.pipe == nil {
 		return nil, reportError("pipe is required and must be specified")
 	}
@@ -1981,15 +1981,15 @@ func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQuer
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -2000,7 +2000,7 @@ func (a *FakeApiService) TestQueryParameterCollectionFormatExecute(r ApiTestQuer
 }
 
 type ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeApi
 	queryUnique *[]string
 	headerUnique *[]string
@@ -2015,7 +2015,7 @@ func (r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) Header
 	return r
 }
 
-func (r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) Execute() ([]Pet, *_nethttp.Response, error) {
+func (r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) Execute() ([]Pet, *http.Response, error) {
 	return r.ApiService.TestUniqueItemsHeaderAndQueryParameterCollectionFormatExecute(r)
 }
 
@@ -2024,10 +2024,10 @@ TestUniqueItemsHeaderAndQueryParameterCollectionFormat Method for TestUniqueItem
 
 To test unique items in header and query parameters
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest
 */
-func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormat(ctx _context.Context) ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest {
+func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormat(ctx context.Context) ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest {
 	return ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -2036,9 +2036,9 @@ func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormat(
 
 // Execute executes the request
 //  @return []Pet
-func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormatExecute(r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) ([]Pet, *_nethttp.Response, error) {
+func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormatExecute(r ApiTestUniqueItemsHeaderAndQueryParameterCollectionFormatRequest) ([]Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  []Pet
@@ -2046,14 +2046,14 @@ func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormatE
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeApiService.TestUniqueItemsHeaderAndQueryParameterCollectionFormat")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/test-unique-parameters"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.queryUnique == nil {
 		return localVarReturnValue, nil, reportError("queryUnique is required and must be specified")
 	}
@@ -2100,15 +2100,15 @@ func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormatE
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -2117,7 +2117,7 @@ func (a *FakeApiService) TestUniqueItemsHeaderAndQueryParameterCollectionFormatE
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_fake_classname_tags123.go b/samples/openapi3/client/petstore/go/go-petstore/api_fake_classname_tags123.go
index a9e7b6279f3..fef8f4cb3d4 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_fake_classname_tags123.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_fake_classname_tags123.go
@@ -12,15 +12,15 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type FakeClassnameTags123Api interface {
@@ -30,21 +30,21 @@ type FakeClassnameTags123Api interface {
 
 	To test class name in snake case
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiTestClassnameRequest
 	*/
-	TestClassname(ctx _context.Context) ApiTestClassnameRequest
+	TestClassname(ctx context.Context) ApiTestClassnameRequest
 
 	// TestClassnameExecute executes the request
 	//  @return Client
-	TestClassnameExecute(r ApiTestClassnameRequest) (Client, *_nethttp.Response, error)
+	TestClassnameExecute(r ApiTestClassnameRequest) (*Client, *http.Response, error)
 }
 
 // FakeClassnameTags123ApiService FakeClassnameTags123Api service
 type FakeClassnameTags123ApiService service
 
 type ApiTestClassnameRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService FakeClassnameTags123Api
 	client *Client
 }
@@ -55,7 +55,7 @@ func (r ApiTestClassnameRequest) Client(client Client) ApiTestClassnameRequest {
 	return r
 }
 
-func (r ApiTestClassnameRequest) Execute() (Client, *_nethttp.Response, error) {
+func (r ApiTestClassnameRequest) Execute() (*Client, *http.Response, error) {
 	return r.ApiService.TestClassnameExecute(r)
 }
 
@@ -64,10 +64,10 @@ TestClassname To test class name in snake case
 
 To test class name in snake case
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiTestClassnameRequest
 */
-func (a *FakeClassnameTags123ApiService) TestClassname(ctx _context.Context) ApiTestClassnameRequest {
+func (a *FakeClassnameTags123ApiService) TestClassname(ctx context.Context) ApiTestClassnameRequest {
 	return ApiTestClassnameRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -76,24 +76,24 @@ func (a *FakeClassnameTags123ApiService) TestClassname(ctx _context.Context) Api
 
 // Execute executes the request
 //  @return Client
-func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassnameRequest) (Client, *_nethttp.Response, error) {
+func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassnameRequest) (*Client, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPatch
+		localVarHTTPMethod   = http.MethodPatch
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Client
+		localVarReturnValue  *Client
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "FakeClassnameTags123ApiService.TestClassname")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake_classname_test"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.client == nil {
 		return localVarReturnValue, nil, reportError("client is required and must be specified")
 	}
@@ -141,15 +141,15 @@ func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassname
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -158,7 +158,7 @@ func (a *FakeClassnameTags123ApiService) TestClassnameExecute(r ApiTestClassname
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_pet.go b/samples/openapi3/client/petstore/go/go-petstore/api_pet.go
index 0b50bc15c5e..d0b5aff3871 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_pet.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_pet.go
@@ -12,17 +12,17 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"strings"
 	"os"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type PetApi interface {
@@ -30,127 +30,127 @@ type PetApi interface {
 	/*
 	AddPet Add a new pet to the store
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiAddPetRequest
 	*/
-	AddPet(ctx _context.Context) ApiAddPetRequest
+	AddPet(ctx context.Context) ApiAddPetRequest
 
 	// AddPetExecute executes the request
-	AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, error)
+	AddPetExecute(r ApiAddPetRequest) (*http.Response, error)
 
 	/*
 	DeletePet Deletes a pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId Pet id to delete
 	 @return ApiDeletePetRequest
 	*/
-	DeletePet(ctx _context.Context, petId int64) ApiDeletePetRequest
+	DeletePet(ctx context.Context, petId int64) ApiDeletePetRequest
 
 	// DeletePetExecute executes the request
-	DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Response, error)
+	DeletePetExecute(r ApiDeletePetRequest) (*http.Response, error)
 
 	/*
 	FindPetsByStatus Finds Pets by status
 
 	Multiple status values can be provided with comma separated strings
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFindPetsByStatusRequest
 	*/
-	FindPetsByStatus(ctx _context.Context) ApiFindPetsByStatusRequest
+	FindPetsByStatus(ctx context.Context) ApiFindPetsByStatusRequest
 
 	// FindPetsByStatusExecute executes the request
 	//  @return []Pet
-	FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *_nethttp.Response, error)
+	FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *http.Response, error)
 
 	/*
 	FindPetsByTags Finds Pets by tags
 
 	Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiFindPetsByTagsRequest
 
 	Deprecated
 	*/
-	FindPetsByTags(ctx _context.Context) ApiFindPetsByTagsRequest
+	FindPetsByTags(ctx context.Context) ApiFindPetsByTagsRequest
 
 	// FindPetsByTagsExecute executes the request
 	//  @return []Pet
 	// Deprecated
-	FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *_nethttp.Response, error)
+	FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *http.Response, error)
 
 	/*
 	GetPetById Find pet by ID
 
 	Returns a single pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet to return
 	 @return ApiGetPetByIdRequest
 	*/
-	GetPetById(ctx _context.Context, petId int64) ApiGetPetByIdRequest
+	GetPetById(ctx context.Context, petId int64) ApiGetPetByIdRequest
 
 	// GetPetByIdExecute executes the request
 	//  @return Pet
-	GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethttp.Response, error)
+	GetPetByIdExecute(r ApiGetPetByIdRequest) (*Pet, *http.Response, error)
 
 	/*
 	UpdatePet Update an existing pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiUpdatePetRequest
 	*/
-	UpdatePet(ctx _context.Context) ApiUpdatePetRequest
+	UpdatePet(ctx context.Context) ApiUpdatePetRequest
 
 	// UpdatePetExecute executes the request
-	UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Response, error)
+	UpdatePetExecute(r ApiUpdatePetRequest) (*http.Response, error)
 
 	/*
 	UpdatePetWithForm Updates a pet in the store with form data
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet that needs to be updated
 	 @return ApiUpdatePetWithFormRequest
 	*/
-	UpdatePetWithForm(ctx _context.Context, petId int64) ApiUpdatePetWithFormRequest
+	UpdatePetWithForm(ctx context.Context, petId int64) ApiUpdatePetWithFormRequest
 
 	// UpdatePetWithFormExecute executes the request
-	UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*_nethttp.Response, error)
+	UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*http.Response, error)
 
 	/*
 	UploadFile uploads an image
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet to update
 	 @return ApiUploadFileRequest
 	*/
-	UploadFile(ctx _context.Context, petId int64) ApiUploadFileRequest
+	UploadFile(ctx context.Context, petId int64) ApiUploadFileRequest
 
 	// UploadFileExecute executes the request
 	//  @return ApiResponse
-	UploadFileExecute(r ApiUploadFileRequest) (ApiResponse, *_nethttp.Response, error)
+	UploadFileExecute(r ApiUploadFileRequest) (*ApiResponse, *http.Response, error)
 
 	/*
 	UploadFileWithRequiredFile uploads an image (required)
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param petId ID of pet to update
 	 @return ApiUploadFileWithRequiredFileRequest
 	*/
-	UploadFileWithRequiredFile(ctx _context.Context, petId int64) ApiUploadFileWithRequiredFileRequest
+	UploadFileWithRequiredFile(ctx context.Context, petId int64) ApiUploadFileWithRequiredFileRequest
 
 	// UploadFileWithRequiredFileExecute executes the request
 	//  @return ApiResponse
-	UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (ApiResponse, *_nethttp.Response, error)
+	UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (*ApiResponse, *http.Response, error)
 }
 
 // PetApiService PetApi service
 type PetApiService service
 
 type ApiAddPetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	pet *Pet
 }
@@ -161,17 +161,17 @@ func (r ApiAddPetRequest) Pet(pet Pet) ApiAddPetRequest {
 	return r
 }
 
-func (r ApiAddPetRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiAddPetRequest) Execute() (*http.Response, error) {
 	return r.ApiService.AddPetExecute(r)
 }
 
 /*
 AddPet Add a new pet to the store
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiAddPetRequest
 */
-func (a *PetApiService) AddPet(ctx _context.Context) ApiAddPetRequest {
+func (a *PetApiService) AddPet(ctx context.Context) ApiAddPetRequest {
 	return ApiAddPetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -179,23 +179,23 @@ func (a *PetApiService) AddPet(ctx _context.Context) ApiAddPetRequest {
 }
 
 // Execute executes the request
-func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.AddPet")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.pet == nil {
 		return nil, reportError("pet is required and must be specified")
 	}
@@ -229,15 +229,15 @@ func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, e
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -248,7 +248,7 @@ func (a *PetApiService) AddPetExecute(r ApiAddPetRequest) (*_nethttp.Response, e
 }
 
 type ApiDeletePetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	apiKey *string
@@ -259,18 +259,18 @@ func (r ApiDeletePetRequest) ApiKey(apiKey string) ApiDeletePetRequest {
 	return r
 }
 
-func (r ApiDeletePetRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiDeletePetRequest) Execute() (*http.Response, error) {
 	return r.ApiService.DeletePetExecute(r)
 }
 
 /*
 DeletePet Deletes a pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId Pet id to delete
  @return ApiDeletePetRequest
 */
-func (a *PetApiService) DeletePet(ctx _context.Context, petId int64) ApiDeletePetRequest {
+func (a *PetApiService) DeletePet(ctx context.Context, petId int64) ApiDeletePetRequest {
 	return ApiDeletePetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -279,24 +279,24 @@ func (a *PetApiService) DeletePet(ctx _context.Context, petId int64) ApiDeletePe
 }
 
 // Execute executes the request
-func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.DeletePet")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -328,15 +328,15 @@ func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Respo
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -347,7 +347,7 @@ func (a *PetApiService) DeletePetExecute(r ApiDeletePetRequest) (*_nethttp.Respo
 }
 
 type ApiFindPetsByStatusRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	status *[]string
 }
@@ -359,7 +359,7 @@ func (r ApiFindPetsByStatusRequest) Status(status []string) ApiFindPetsByStatusR
 	return r
 }
 
-func (r ApiFindPetsByStatusRequest) Execute() ([]Pet, *_nethttp.Response, error) {
+func (r ApiFindPetsByStatusRequest) Execute() ([]Pet, *http.Response, error) {
 	return r.ApiService.FindPetsByStatusExecute(r)
 }
 
@@ -368,10 +368,10 @@ FindPetsByStatus Finds Pets by status
 
 Multiple status values can be provided with comma separated strings
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFindPetsByStatusRequest
 */
-func (a *PetApiService) FindPetsByStatus(ctx _context.Context) ApiFindPetsByStatusRequest {
+func (a *PetApiService) FindPetsByStatus(ctx context.Context) ApiFindPetsByStatusRequest {
 	return ApiFindPetsByStatusRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -380,9 +380,9 @@ func (a *PetApiService) FindPetsByStatus(ctx _context.Context) ApiFindPetsByStat
 
 // Execute executes the request
 //  @return []Pet
-func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *_nethttp.Response, error) {
+func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([]Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  []Pet
@@ -390,14 +390,14 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.FindPetsByStatus")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/findByStatus"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.status == nil {
 		return localVarReturnValue, nil, reportError("status is required and must be specified")
 	}
@@ -430,15 +430,15 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -447,7 +447,7 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -458,7 +458,7 @@ func (a *PetApiService) FindPetsByStatusExecute(r ApiFindPetsByStatusRequest) ([
 }
 
 type ApiFindPetsByTagsRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	tags *[]string
 }
@@ -469,7 +469,7 @@ func (r ApiFindPetsByTagsRequest) Tags(tags []string) ApiFindPetsByTagsRequest {
 	return r
 }
 
-func (r ApiFindPetsByTagsRequest) Execute() ([]Pet, *_nethttp.Response, error) {
+func (r ApiFindPetsByTagsRequest) Execute() ([]Pet, *http.Response, error) {
 	return r.ApiService.FindPetsByTagsExecute(r)
 }
 
@@ -478,12 +478,12 @@ FindPetsByTags Finds Pets by tags
 
 Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiFindPetsByTagsRequest
 
 Deprecated
 */
-func (a *PetApiService) FindPetsByTags(ctx _context.Context) ApiFindPetsByTagsRequest {
+func (a *PetApiService) FindPetsByTags(ctx context.Context) ApiFindPetsByTagsRequest {
 	return ApiFindPetsByTagsRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -493,9 +493,9 @@ func (a *PetApiService) FindPetsByTags(ctx _context.Context) ApiFindPetsByTagsRe
 // Execute executes the request
 //  @return []Pet
 // Deprecated
-func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *_nethttp.Response, error) {
+func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  []Pet
@@ -503,14 +503,14 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.FindPetsByTags")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/findByTags"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.tags == nil {
 		return localVarReturnValue, nil, reportError("tags is required and must be specified")
 	}
@@ -543,15 +543,15 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -560,7 +560,7 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -571,13 +571,13 @@ func (a *PetApiService) FindPetsByTagsExecute(r ApiFindPetsByTagsRequest) ([]Pet
 }
 
 type ApiGetPetByIdRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 }
 
 
-func (r ApiGetPetByIdRequest) Execute() (Pet, *_nethttp.Response, error) {
+func (r ApiGetPetByIdRequest) Execute() (*Pet, *http.Response, error) {
 	return r.ApiService.GetPetByIdExecute(r)
 }
 
@@ -586,11 +586,11 @@ GetPetById Find pet by ID
 
 Returns a single pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet to return
  @return ApiGetPetByIdRequest
 */
-func (a *PetApiService) GetPetById(ctx _context.Context, petId int64) ApiGetPetByIdRequest {
+func (a *PetApiService) GetPetById(ctx context.Context, petId int64) ApiGetPetByIdRequest {
 	return ApiGetPetByIdRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -600,25 +600,25 @@ func (a *PetApiService) GetPetById(ctx _context.Context, petId int64) ApiGetPetB
 
 // Execute executes the request
 //  @return Pet
-func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethttp.Response, error) {
+func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (*Pet, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Pet
+		localVarReturnValue  *Pet
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.GetPetById")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -661,15 +661,15 @@ func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethtt
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -678,7 +678,7 @@ func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethtt
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -689,7 +689,7 @@ func (a *PetApiService) GetPetByIdExecute(r ApiGetPetByIdRequest) (Pet, *_nethtt
 }
 
 type ApiUpdatePetRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	pet *Pet
 }
@@ -700,17 +700,17 @@ func (r ApiUpdatePetRequest) Pet(pet Pet) ApiUpdatePetRequest {
 	return r
 }
 
-func (r ApiUpdatePetRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiUpdatePetRequest) Execute() (*http.Response, error) {
 	return r.ApiService.UpdatePetExecute(r)
 }
 
 /*
 UpdatePet Update an existing pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiUpdatePetRequest
 */
-func (a *PetApiService) UpdatePet(ctx _context.Context) ApiUpdatePetRequest {
+func (a *PetApiService) UpdatePet(ctx context.Context) ApiUpdatePetRequest {
 	return ApiUpdatePetRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -718,23 +718,23 @@ func (a *PetApiService) UpdatePet(ctx _context.Context) ApiUpdatePetRequest {
 }
 
 // Execute executes the request
-func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UpdatePet")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.pet == nil {
 		return nil, reportError("pet is required and must be specified")
 	}
@@ -768,15 +768,15 @@ func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Respo
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -787,7 +787,7 @@ func (a *PetApiService) UpdatePetExecute(r ApiUpdatePetRequest) (*_nethttp.Respo
 }
 
 type ApiUpdatePetWithFormRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	name *string
@@ -805,18 +805,18 @@ func (r ApiUpdatePetWithFormRequest) Status(status string) ApiUpdatePetWithFormR
 	return r
 }
 
-func (r ApiUpdatePetWithFormRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiUpdatePetWithFormRequest) Execute() (*http.Response, error) {
 	return r.ApiService.UpdatePetWithFormExecute(r)
 }
 
 /*
 UpdatePetWithForm Updates a pet in the store with form data
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet that needs to be updated
  @return ApiUpdatePetWithFormRequest
 */
-func (a *PetApiService) UpdatePetWithForm(ctx _context.Context, petId int64) ApiUpdatePetWithFormRequest {
+func (a *PetApiService) UpdatePetWithForm(ctx context.Context, petId int64) ApiUpdatePetWithFormRequest {
 	return ApiUpdatePetWithFormRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -825,24 +825,24 @@ func (a *PetApiService) UpdatePetWithForm(ctx _context.Context, petId int64) Api
 }
 
 // Execute executes the request
-func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*_nethttp.Response, error) {
+func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UpdatePetWithForm")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"application/x-www-form-urlencoded"}
@@ -877,15 +877,15 @@ func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest)
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -896,7 +896,7 @@ func (a *PetApiService) UpdatePetWithFormExecute(r ApiUpdatePetWithFormRequest)
 }
 
 type ApiUploadFileRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	additionalMetadata *string
@@ -914,18 +914,18 @@ func (r ApiUploadFileRequest) File(file *os.File) ApiUploadFileRequest {
 	return r
 }
 
-func (r ApiUploadFileRequest) Execute() (ApiResponse, *_nethttp.Response, error) {
+func (r ApiUploadFileRequest) Execute() (*ApiResponse, *http.Response, error) {
 	return r.ApiService.UploadFileExecute(r)
 }
 
 /*
 UploadFile uploads an image
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet to update
  @return ApiUploadFileRequest
 */
-func (a *PetApiService) UploadFile(ctx _context.Context, petId int64) ApiUploadFileRequest {
+func (a *PetApiService) UploadFile(ctx context.Context, petId int64) ApiUploadFileRequest {
 	return ApiUploadFileRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -935,25 +935,25 @@ func (a *PetApiService) UploadFile(ctx _context.Context, petId int64) ApiUploadF
 
 // Execute executes the request
 //  @return ApiResponse
-func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse, *_nethttp.Response, error) {
+func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (*ApiResponse, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  ApiResponse
+		localVarReturnValue  *ApiResponse
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UploadFile")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/pet/{petId}/uploadImage"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{"multipart/form-data"}
@@ -986,7 +986,7 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 		fileLocalVarFile = *r.file
 	}
 	if fileLocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll(fileLocalVarFile)
+		fbs, _ := ioutil.ReadAll(fileLocalVarFile)
 		fileLocalVarFileBytes = fbs
 		fileLocalVarFileName = fileLocalVarFile.Name()
 		fileLocalVarFile.Close()
@@ -1002,15 +1002,15 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1019,7 +1019,7 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -1030,7 +1030,7 @@ func (a *PetApiService) UploadFileExecute(r ApiUploadFileRequest) (ApiResponse,
 }
 
 type ApiUploadFileWithRequiredFileRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService PetApi
 	petId int64
 	requiredFile **os.File
@@ -1048,18 +1048,18 @@ func (r ApiUploadFileWithRequiredFileRequest) AdditionalMetadata(additionalMetad
 	return r
 }
 
-func (r ApiUploadFileWithRequiredFileRequest) Execute() (ApiResponse, *_nethttp.Response, error) {
+func (r ApiUploadFileWithRequiredFileRequest) Execute() (*ApiResponse, *http.Response, error) {
 	return r.ApiService.UploadFileWithRequiredFileExecute(r)
 }
 
 /*
 UploadFileWithRequiredFile uploads an image (required)
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param petId ID of pet to update
  @return ApiUploadFileWithRequiredFileRequest
 */
-func (a *PetApiService) UploadFileWithRequiredFile(ctx _context.Context, petId int64) ApiUploadFileWithRequiredFileRequest {
+func (a *PetApiService) UploadFileWithRequiredFile(ctx context.Context, petId int64) ApiUploadFileWithRequiredFileRequest {
 	return ApiUploadFileWithRequiredFileRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -1069,25 +1069,25 @@ func (a *PetApiService) UploadFileWithRequiredFile(ctx _context.Context, petId i
 
 // Execute executes the request
 //  @return ApiResponse
-func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (ApiResponse, *_nethttp.Response, error) {
+func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithRequiredFileRequest) (*ApiResponse, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  ApiResponse
+		localVarReturnValue  *ApiResponse
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "PetApiService.UploadFileWithRequiredFile")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/fake/{petId}/uploadImageWithRequiredFile"
-	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", _neturl.PathEscape(parameterToString(r.petId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"petId"+"}", url.PathEscape(parameterToString(r.petId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.requiredFile == nil {
 		return localVarReturnValue, nil, reportError("requiredFile is required and must be specified")
 	}
@@ -1120,7 +1120,7 @@ func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithReq
 
 	requiredFileLocalVarFile := *r.requiredFile
 	if requiredFileLocalVarFile != nil {
-		fbs, _ := _ioutil.ReadAll(requiredFileLocalVarFile)
+		fbs, _ := ioutil.ReadAll(requiredFileLocalVarFile)
 		requiredFileLocalVarFileBytes = fbs
 		requiredFileLocalVarFileName = requiredFileLocalVarFile.Name()
 		requiredFileLocalVarFile.Close()
@@ -1136,15 +1136,15 @@ func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithReq
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -1153,7 +1153,7 @@ func (a *PetApiService) UploadFileWithRequiredFileExecute(r ApiUploadFileWithReq
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_store.go b/samples/openapi3/client/petstore/go/go-petstore/api_store.go
index 41c9e8fda94..3957c73f96a 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_store.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_store.go
@@ -12,16 +12,16 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"strings"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type StoreApi interface {
@@ -31,68 +31,68 @@ type StoreApi interface {
 
 	For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param orderId ID of the order that needs to be deleted
 	 @return ApiDeleteOrderRequest
 	*/
-	DeleteOrder(ctx _context.Context, orderId string) ApiDeleteOrderRequest
+	DeleteOrder(ctx context.Context, orderId string) ApiDeleteOrderRequest
 
 	// DeleteOrderExecute executes the request
-	DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp.Response, error)
+	DeleteOrderExecute(r ApiDeleteOrderRequest) (*http.Response, error)
 
 	/*
 	GetInventory Returns pet inventories by status
 
 	Returns a map of status codes to quantities
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiGetInventoryRequest
 	*/
-	GetInventory(ctx _context.Context) ApiGetInventoryRequest
+	GetInventory(ctx context.Context) ApiGetInventoryRequest
 
 	// GetInventoryExecute executes the request
 	//  @return map[string]int32
-	GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *_nethttp.Response, error)
+	GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *http.Response, error)
 
 	/*
 	GetOrderById Find purchase order by ID
 
 	For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param orderId ID of pet that needs to be fetched
 	 @return ApiGetOrderByIdRequest
 	*/
-	GetOrderById(ctx _context.Context, orderId int64) ApiGetOrderByIdRequest
+	GetOrderById(ctx context.Context, orderId int64) ApiGetOrderByIdRequest
 
 	// GetOrderByIdExecute executes the request
 	//  @return Order
-	GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order, *_nethttp.Response, error)
+	GetOrderByIdExecute(r ApiGetOrderByIdRequest) (*Order, *http.Response, error)
 
 	/*
 	PlaceOrder Place an order for a pet
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiPlaceOrderRequest
 	*/
-	PlaceOrder(ctx _context.Context) ApiPlaceOrderRequest
+	PlaceOrder(ctx context.Context) ApiPlaceOrderRequest
 
 	// PlaceOrderExecute executes the request
 	//  @return Order
-	PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_nethttp.Response, error)
+	PlaceOrderExecute(r ApiPlaceOrderRequest) (*Order, *http.Response, error)
 }
 
 // StoreApiService StoreApi service
 type StoreApiService service
 
 type ApiDeleteOrderRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 	orderId string
 }
 
 
-func (r ApiDeleteOrderRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiDeleteOrderRequest) Execute() (*http.Response, error) {
 	return r.ApiService.DeleteOrderExecute(r)
 }
 
@@ -101,11 +101,11 @@ DeleteOrder Delete purchase order by ID
 
 For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param orderId ID of the order that needs to be deleted
  @return ApiDeleteOrderRequest
 */
-func (a *StoreApiService) DeleteOrder(ctx _context.Context, orderId string) ApiDeleteOrderRequest {
+func (a *StoreApiService) DeleteOrder(ctx context.Context, orderId string) ApiDeleteOrderRequest {
 	return ApiDeleteOrderRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -114,24 +114,24 @@ func (a *StoreApiService) DeleteOrder(ctx _context.Context, orderId string) ApiD
 }
 
 // Execute executes the request
-func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp.Response, error) {
+func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.DeleteOrder")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/order/{order_id}"
-	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", _neturl.PathEscape(parameterToString(r.orderId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", url.PathEscape(parameterToString(r.orderId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -160,15 +160,15 @@ func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -179,12 +179,12 @@ func (a *StoreApiService) DeleteOrderExecute(r ApiDeleteOrderRequest) (*_nethttp
 }
 
 type ApiGetInventoryRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 }
 
 
-func (r ApiGetInventoryRequest) Execute() (map[string]int32, *_nethttp.Response, error) {
+func (r ApiGetInventoryRequest) Execute() (map[string]int32, *http.Response, error) {
 	return r.ApiService.GetInventoryExecute(r)
 }
 
@@ -193,10 +193,10 @@ GetInventory Returns pet inventories by status
 
 Returns a map of status codes to quantities
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiGetInventoryRequest
 */
-func (a *StoreApiService) GetInventory(ctx _context.Context) ApiGetInventoryRequest {
+func (a *StoreApiService) GetInventory(ctx context.Context) ApiGetInventoryRequest {
 	return ApiGetInventoryRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -205,9 +205,9 @@ func (a *StoreApiService) GetInventory(ctx _context.Context) ApiGetInventoryRequ
 
 // Execute executes the request
 //  @return map[string]int32
-func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *_nethttp.Response, error) {
+func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[string]int32, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  map[string]int32
@@ -215,14 +215,14 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.GetInventory")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/inventory"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -265,15 +265,15 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -282,7 +282,7 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -293,13 +293,13 @@ func (a *StoreApiService) GetInventoryExecute(r ApiGetInventoryRequest) (map[str
 }
 
 type ApiGetOrderByIdRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 	orderId int64
 }
 
 
-func (r ApiGetOrderByIdRequest) Execute() (Order, *_nethttp.Response, error) {
+func (r ApiGetOrderByIdRequest) Execute() (*Order, *http.Response, error) {
 	return r.ApiService.GetOrderByIdExecute(r)
 }
 
@@ -308,11 +308,11 @@ GetOrderById Find purchase order by ID
 
 For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param orderId ID of pet that needs to be fetched
  @return ApiGetOrderByIdRequest
 */
-func (a *StoreApiService) GetOrderById(ctx _context.Context, orderId int64) ApiGetOrderByIdRequest {
+func (a *StoreApiService) GetOrderById(ctx context.Context, orderId int64) ApiGetOrderByIdRequest {
 	return ApiGetOrderByIdRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -322,25 +322,25 @@ func (a *StoreApiService) GetOrderById(ctx _context.Context, orderId int64) ApiG
 
 // Execute executes the request
 //  @return Order
-func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order, *_nethttp.Response, error) {
+func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (*Order, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Order
+		localVarReturnValue  *Order
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.GetOrderById")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/order/{order_id}"
-	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", _neturl.PathEscape(parameterToString(r.orderId, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"order_id"+"}", url.PathEscape(parameterToString(r.orderId, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.orderId < 1 {
 		return localVarReturnValue, nil, reportError("orderId must be greater than 1")
 	}
@@ -375,15 +375,15 @@ func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order,
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -392,7 +392,7 @@ func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order,
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -403,7 +403,7 @@ func (a *StoreApiService) GetOrderByIdExecute(r ApiGetOrderByIdRequest) (Order,
 }
 
 type ApiPlaceOrderRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService StoreApi
 	order *Order
 }
@@ -414,17 +414,17 @@ func (r ApiPlaceOrderRequest) Order(order Order) ApiPlaceOrderRequest {
 	return r
 }
 
-func (r ApiPlaceOrderRequest) Execute() (Order, *_nethttp.Response, error) {
+func (r ApiPlaceOrderRequest) Execute() (*Order, *http.Response, error) {
 	return r.ApiService.PlaceOrderExecute(r)
 }
 
 /*
 PlaceOrder Place an order for a pet
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiPlaceOrderRequest
 */
-func (a *StoreApiService) PlaceOrder(ctx _context.Context) ApiPlaceOrderRequest {
+func (a *StoreApiService) PlaceOrder(ctx context.Context) ApiPlaceOrderRequest {
 	return ApiPlaceOrderRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -433,24 +433,24 @@ func (a *StoreApiService) PlaceOrder(ctx _context.Context) ApiPlaceOrderRequest
 
 // Execute executes the request
 //  @return Order
-func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_nethttp.Response, error) {
+func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (*Order, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  Order
+		localVarReturnValue  *Order
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "StoreApiService.PlaceOrder")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/store/order"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.order == nil {
 		return localVarReturnValue, nil, reportError("order is required and must be specified")
 	}
@@ -484,15 +484,15 @@ func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_ne
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -501,7 +501,7 @@ func (a *StoreApiService) PlaceOrderExecute(r ApiPlaceOrderRequest) (Order, *_ne
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/api_user.go b/samples/openapi3/client/petstore/go/go-petstore/api_user.go
index d67bb32a7e0..b044e87a435 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/api_user.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/api_user.go
@@ -12,16 +12,16 @@ package petstore
 
 import (
 	"bytes"
-	_context "context"
-	_ioutil "io/ioutil"
-	_nethttp "net/http"
-	_neturl "net/url"
+	"context"
+	"io/ioutil"
+	"net/http"
+	"net/url"
 	"strings"
 )
 
 // Linger please
 var (
-	_ _context.Context
+	_ context.Context
 )
 
 type UserApi interface {
@@ -31,106 +31,106 @@ type UserApi interface {
 
 	This can only be done by the logged in user.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateUserRequest
 	*/
-	CreateUser(ctx _context.Context) ApiCreateUserRequest
+	CreateUser(ctx context.Context) ApiCreateUserRequest
 
 	// CreateUserExecute executes the request
-	CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Response, error)
+	CreateUserExecute(r ApiCreateUserRequest) (*http.Response, error)
 
 	/*
 	CreateUsersWithArrayInput Creates list of users with given input array
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateUsersWithArrayInputRequest
 	*/
-	CreateUsersWithArrayInput(ctx _context.Context) ApiCreateUsersWithArrayInputRequest
+	CreateUsersWithArrayInput(ctx context.Context) ApiCreateUsersWithArrayInputRequest
 
 	// CreateUsersWithArrayInputExecute executes the request
-	CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*_nethttp.Response, error)
+	CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*http.Response, error)
 
 	/*
 	CreateUsersWithListInput Creates list of users with given input array
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiCreateUsersWithListInputRequest
 	*/
-	CreateUsersWithListInput(ctx _context.Context) ApiCreateUsersWithListInputRequest
+	CreateUsersWithListInput(ctx context.Context) ApiCreateUsersWithListInputRequest
 
 	// CreateUsersWithListInputExecute executes the request
-	CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*_nethttp.Response, error)
+	CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*http.Response, error)
 
 	/*
 	DeleteUser Delete user
 
 	This can only be done by the logged in user.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param username The name that needs to be deleted
 	 @return ApiDeleteUserRequest
 	*/
-	DeleteUser(ctx _context.Context, username string) ApiDeleteUserRequest
+	DeleteUser(ctx context.Context, username string) ApiDeleteUserRequest
 
 	// DeleteUserExecute executes the request
-	DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Response, error)
+	DeleteUserExecute(r ApiDeleteUserRequest) (*http.Response, error)
 
 	/*
 	GetUserByName Get user by user name
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param username The name that needs to be fetched. Use user1 for testing.
 	 @return ApiGetUserByNameRequest
 	*/
-	GetUserByName(ctx _context.Context, username string) ApiGetUserByNameRequest
+	GetUserByName(ctx context.Context, username string) ApiGetUserByNameRequest
 
 	// GetUserByNameExecute executes the request
 	//  @return User
-	GetUserByNameExecute(r ApiGetUserByNameRequest) (User, *_nethttp.Response, error)
+	GetUserByNameExecute(r ApiGetUserByNameRequest) (*User, *http.Response, error)
 
 	/*
 	LoginUser Logs user into the system
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiLoginUserRequest
 	*/
-	LoginUser(ctx _context.Context) ApiLoginUserRequest
+	LoginUser(ctx context.Context) ApiLoginUserRequest
 
 	// LoginUserExecute executes the request
 	//  @return string
-	LoginUserExecute(r ApiLoginUserRequest) (string, *_nethttp.Response, error)
+	LoginUserExecute(r ApiLoginUserRequest) (string, *http.Response, error)
 
 	/*
 	LogoutUser Logs out current logged in user session
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @return ApiLogoutUserRequest
 	*/
-	LogoutUser(ctx _context.Context) ApiLogoutUserRequest
+	LogoutUser(ctx context.Context) ApiLogoutUserRequest
 
 	// LogoutUserExecute executes the request
-	LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Response, error)
+	LogoutUserExecute(r ApiLogoutUserRequest) (*http.Response, error)
 
 	/*
 	UpdateUser Updated user
 
 	This can only be done by the logged in user.
 
-	 @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+	 @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
 	 @param username name that need to be deleted
 	 @return ApiUpdateUserRequest
 	*/
-	UpdateUser(ctx _context.Context, username string) ApiUpdateUserRequest
+	UpdateUser(ctx context.Context, username string) ApiUpdateUserRequest
 
 	// UpdateUserExecute executes the request
-	UpdateUserExecute(r ApiUpdateUserRequest) (*_nethttp.Response, error)
+	UpdateUserExecute(r ApiUpdateUserRequest) (*http.Response, error)
 }
 
 // UserApiService UserApi service
 type UserApiService service
 
 type ApiCreateUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	user *User
 }
@@ -141,7 +141,7 @@ func (r ApiCreateUserRequest) User(user User) ApiCreateUserRequest {
 	return r
 }
 
-func (r ApiCreateUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateUserExecute(r)
 }
 
@@ -150,10 +150,10 @@ CreateUser Create user
 
 This can only be done by the logged in user.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateUserRequest
 */
-func (a *UserApiService) CreateUser(ctx _context.Context) ApiCreateUserRequest {
+func (a *UserApiService) CreateUser(ctx context.Context) ApiCreateUserRequest {
 	return ApiCreateUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -161,23 +161,23 @@ func (a *UserApiService) CreateUser(ctx _context.Context) ApiCreateUserRequest {
 }
 
 // Execute executes the request
-func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.CreateUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.user == nil {
 		return nil, reportError("user is required and must be specified")
 	}
@@ -211,15 +211,15 @@ func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -230,7 +230,7 @@ func (a *UserApiService) CreateUserExecute(r ApiCreateUserRequest) (*_nethttp.Re
 }
 
 type ApiCreateUsersWithArrayInputRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	user *[]User
 }
@@ -241,17 +241,17 @@ func (r ApiCreateUsersWithArrayInputRequest) User(user []User) ApiCreateUsersWit
 	return r
 }
 
-func (r ApiCreateUsersWithArrayInputRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateUsersWithArrayInputRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateUsersWithArrayInputExecute(r)
 }
 
 /*
 CreateUsersWithArrayInput Creates list of users with given input array
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateUsersWithArrayInputRequest
 */
-func (a *UserApiService) CreateUsersWithArrayInput(ctx _context.Context) ApiCreateUsersWithArrayInputRequest {
+func (a *UserApiService) CreateUsersWithArrayInput(ctx context.Context) ApiCreateUsersWithArrayInputRequest {
 	return ApiCreateUsersWithArrayInputRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -259,23 +259,23 @@ func (a *UserApiService) CreateUsersWithArrayInput(ctx _context.Context) ApiCrea
 }
 
 // Execute executes the request
-func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithArrayInputRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.CreateUsersWithArrayInput")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/createWithArray"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.user == nil {
 		return nil, reportError("user is required and must be specified")
 	}
@@ -309,15 +309,15 @@ func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithAr
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -328,7 +328,7 @@ func (a *UserApiService) CreateUsersWithArrayInputExecute(r ApiCreateUsersWithAr
 }
 
 type ApiCreateUsersWithListInputRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	user *[]User
 }
@@ -339,17 +339,17 @@ func (r ApiCreateUsersWithListInputRequest) User(user []User) ApiCreateUsersWith
 	return r
 }
 
-func (r ApiCreateUsersWithListInputRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiCreateUsersWithListInputRequest) Execute() (*http.Response, error) {
 	return r.ApiService.CreateUsersWithListInputExecute(r)
 }
 
 /*
 CreateUsersWithListInput Creates list of users with given input array
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiCreateUsersWithListInputRequest
 */
-func (a *UserApiService) CreateUsersWithListInput(ctx _context.Context) ApiCreateUsersWithListInputRequest {
+func (a *UserApiService) CreateUsersWithListInput(ctx context.Context) ApiCreateUsersWithListInputRequest {
 	return ApiCreateUsersWithListInputRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -357,23 +357,23 @@ func (a *UserApiService) CreateUsersWithListInput(ctx _context.Context) ApiCreat
 }
 
 // Execute executes the request
-func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithListInputRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPost
+		localVarHTTPMethod   = http.MethodPost
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.CreateUsersWithListInput")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/createWithList"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.user == nil {
 		return nil, reportError("user is required and must be specified")
 	}
@@ -407,15 +407,15 @@ func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithLis
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -426,13 +426,13 @@ func (a *UserApiService) CreateUsersWithListInputExecute(r ApiCreateUsersWithLis
 }
 
 type ApiDeleteUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username string
 }
 
 
-func (r ApiDeleteUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiDeleteUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.DeleteUserExecute(r)
 }
 
@@ -441,11 +441,11 @@ DeleteUser Delete user
 
 This can only be done by the logged in user.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param username The name that needs to be deleted
  @return ApiDeleteUserRequest
 */
-func (a *UserApiService) DeleteUser(ctx _context.Context, username string) ApiDeleteUserRequest {
+func (a *UserApiService) DeleteUser(ctx context.Context, username string) ApiDeleteUserRequest {
 	return ApiDeleteUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -454,24 +454,24 @@ func (a *UserApiService) DeleteUser(ctx _context.Context, username string) ApiDe
 }
 
 // Execute executes the request
-func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodDelete
+		localVarHTTPMethod   = http.MethodDelete
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.DeleteUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/{username}"
-	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", _neturl.PathEscape(parameterToString(r.username, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", url.PathEscape(parameterToString(r.username, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -500,15 +500,15 @@ func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -519,24 +519,24 @@ func (a *UserApiService) DeleteUserExecute(r ApiDeleteUserRequest) (*_nethttp.Re
 }
 
 type ApiGetUserByNameRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username string
 }
 
 
-func (r ApiGetUserByNameRequest) Execute() (User, *_nethttp.Response, error) {
+func (r ApiGetUserByNameRequest) Execute() (*User, *http.Response, error) {
 	return r.ApiService.GetUserByNameExecute(r)
 }
 
 /*
 GetUserByName Get user by user name
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param username The name that needs to be fetched. Use user1 for testing.
  @return ApiGetUserByNameRequest
 */
-func (a *UserApiService) GetUserByName(ctx _context.Context, username string) ApiGetUserByNameRequest {
+func (a *UserApiService) GetUserByName(ctx context.Context, username string) ApiGetUserByNameRequest {
 	return ApiGetUserByNameRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -546,25 +546,25 @@ func (a *UserApiService) GetUserByName(ctx _context.Context, username string) Ap
 
 // Execute executes the request
 //  @return User
-func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User, *_nethttp.Response, error) {
+func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (*User, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
-		localVarReturnValue  User
+		localVarReturnValue  *User
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.GetUserByName")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/{username}"
-	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", _neturl.PathEscape(parameterToString(r.username, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", url.PathEscape(parameterToString(r.username, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -593,15 +593,15 @@ func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User,
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -610,7 +610,7 @@ func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User,
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -621,7 +621,7 @@ func (a *UserApiService) GetUserByNameExecute(r ApiGetUserByNameRequest) (User,
 }
 
 type ApiLoginUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username *string
 	password *string
@@ -638,17 +638,17 @@ func (r ApiLoginUserRequest) Password(password string) ApiLoginUserRequest {
 	return r
 }
 
-func (r ApiLoginUserRequest) Execute() (string, *_nethttp.Response, error) {
+func (r ApiLoginUserRequest) Execute() (string, *http.Response, error) {
 	return r.ApiService.LoginUserExecute(r)
 }
 
 /*
 LoginUser Logs user into the system
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiLoginUserRequest
 */
-func (a *UserApiService) LoginUser(ctx _context.Context) ApiLoginUserRequest {
+func (a *UserApiService) LoginUser(ctx context.Context) ApiLoginUserRequest {
 	return ApiLoginUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -657,9 +657,9 @@ func (a *UserApiService) LoginUser(ctx _context.Context) ApiLoginUserRequest {
 
 // Execute executes the request
 //  @return string
-func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_nethttp.Response, error) {
+func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 		localVarReturnValue  string
@@ -667,14 +667,14 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.LoginUser")
 	if err != nil {
-		return localVarReturnValue, nil, GenericOpenAPIError{error: err.Error()}
+		return localVarReturnValue, nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/login"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.username == nil {
 		return localVarReturnValue, nil, reportError("username is required and must be specified")
 	}
@@ -711,15 +711,15 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarReturnValue, localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -728,7 +728,7 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 
 	err = a.client.decode(&localVarReturnValue, localVarBody, localVarHTTPResponse.Header.Get("Content-Type"))
 	if err != nil {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: err.Error(),
 		}
@@ -739,22 +739,22 @@ func (a *UserApiService) LoginUserExecute(r ApiLoginUserRequest) (string, *_neth
 }
 
 type ApiLogoutUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 }
 
 
-func (r ApiLogoutUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiLogoutUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.LogoutUserExecute(r)
 }
 
 /*
 LogoutUser Logs out current logged in user session
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @return ApiLogoutUserRequest
 */
-func (a *UserApiService) LogoutUser(ctx _context.Context) ApiLogoutUserRequest {
+func (a *UserApiService) LogoutUser(ctx context.Context) ApiLogoutUserRequest {
 	return ApiLogoutUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -762,23 +762,23 @@ func (a *UserApiService) LogoutUser(ctx _context.Context) ApiLogoutUserRequest {
 }
 
 // Execute executes the request
-func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodGet
+		localVarHTTPMethod   = http.MethodGet
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.LogoutUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/logout"
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 
 	// to determine the Content-Type header
 	localVarHTTPContentTypes := []string{}
@@ -807,15 +807,15 @@ func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
@@ -826,7 +826,7 @@ func (a *UserApiService) LogoutUserExecute(r ApiLogoutUserRequest) (*_nethttp.Re
 }
 
 type ApiUpdateUserRequest struct {
-	ctx _context.Context
+	ctx context.Context
 	ApiService UserApi
 	username string
 	user *User
@@ -838,7 +838,7 @@ func (r ApiUpdateUserRequest) User(user User) ApiUpdateUserRequest {
 	return r
 }
 
-func (r ApiUpdateUserRequest) Execute() (*_nethttp.Response, error) {
+func (r ApiUpdateUserRequest) Execute() (*http.Response, error) {
 	return r.ApiService.UpdateUserExecute(r)
 }
 
@@ -847,11 +847,11 @@ UpdateUser Updated user
 
 This can only be done by the logged in user.
 
- @param ctx _context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
+ @param ctx context.Context - for authentication, logging, cancellation, deadlines, tracing, etc. Passed from http.Request or context.Background().
  @param username name that need to be deleted
  @return ApiUpdateUserRequest
 */
-func (a *UserApiService) UpdateUser(ctx _context.Context, username string) ApiUpdateUserRequest {
+func (a *UserApiService) UpdateUser(ctx context.Context, username string) ApiUpdateUserRequest {
 	return ApiUpdateUserRequest{
 		ApiService: a,
 		ctx: ctx,
@@ -860,24 +860,24 @@ func (a *UserApiService) UpdateUser(ctx _context.Context, username string) ApiUp
 }
 
 // Execute executes the request
-func (a *UserApiService) UpdateUserExecute(r ApiUpdateUserRequest) (*_nethttp.Response, error) {
+func (a *UserApiService) UpdateUserExecute(r ApiUpdateUserRequest) (*http.Response, error) {
 	var (
-		localVarHTTPMethod   = _nethttp.MethodPut
+		localVarHTTPMethod   = http.MethodPut
 		localVarPostBody     interface{}
 		formFiles            []formFile
 	)
 
 	localBasePath, err := a.client.cfg.ServerURLWithContext(r.ctx, "UserApiService.UpdateUser")
 	if err != nil {
-		return nil, GenericOpenAPIError{error: err.Error()}
+		return nil, &GenericOpenAPIError{error: err.Error()}
 	}
 
 	localVarPath := localBasePath + "/user/{username}"
-	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", _neturl.PathEscape(parameterToString(r.username, "")), -1)
+	localVarPath = strings.Replace(localVarPath, "{"+"username"+"}", url.PathEscape(parameterToString(r.username, "")), -1)
 
 	localVarHeaderParams := make(map[string]string)
-	localVarQueryParams := _neturl.Values{}
-	localVarFormParams := _neturl.Values{}
+	localVarQueryParams := url.Values{}
+	localVarFormParams := url.Values{}
 	if r.user == nil {
 		return nil, reportError("user is required and must be specified")
 	}
@@ -911,15 +911,15 @@ func (a *UserApiService) UpdateUserExecute(r ApiUpdateUserRequest) (*_nethttp.Re
 		return localVarHTTPResponse, err
 	}
 
-	localVarBody, err := _ioutil.ReadAll(localVarHTTPResponse.Body)
+	localVarBody, err := ioutil.ReadAll(localVarHTTPResponse.Body)
 	localVarHTTPResponse.Body.Close()
-	localVarHTTPResponse.Body = _ioutil.NopCloser(bytes.NewBuffer(localVarBody))
+	localVarHTTPResponse.Body = ioutil.NopCloser(bytes.NewBuffer(localVarBody))
 	if err != nil {
 		return localVarHTTPResponse, err
 	}
 
 	if localVarHTTPResponse.StatusCode >= 300 {
-		newErr := GenericOpenAPIError{
+		newErr := &GenericOpenAPIError{
 			body:  localVarBody,
 			error: localVarHTTPResponse.Status,
 		}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/client.go b/samples/openapi3/client/petstore/go/go-petstore/client.go
index 99eed71f66f..f0cb8337545 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/client.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/client.go
@@ -450,6 +450,13 @@ func reportError(format string, a ...interface{}) error {
 	return fmt.Errorf(format, a...)
 }
 
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
 // Set request body from an interface{}
 func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
 	if bodyBuf == nil {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/AnotherFakeApi.md b/samples/openapi3/client/petstore/go/go-petstore/docs/AnotherFakeApi.md
index cd383de7c66..5ebd96a4159 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/AnotherFakeApi.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/AnotherFakeApi.md
@@ -32,8 +32,8 @@ func main() {
     client := *openapiclient.NewClient() // Client | client model
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.AnotherFakeApi.Call123TestSpecialTags(context.Background()).Client(client).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.AnotherFakeApi.Call123TestSpecialTags(context.Background()).Client(client).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `AnotherFakeApi.Call123TestSpecialTags``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/DefaultApi.md b/samples/openapi3/client/petstore/go/go-petstore/docs/DefaultApi.md
index 90eb907168d..62cef88c3f6 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/DefaultApi.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/DefaultApi.md
@@ -29,8 +29,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.DefaultApi.FooGet(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.DefaultApi.FooGet(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `DefaultApi.FooGet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/FakeApi.md b/samples/openapi3/client/petstore/go/go-petstore/docs/FakeApi.md
index 13dba6a766a..13ee6ee52ef 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/FakeApi.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/FakeApi.md
@@ -43,8 +43,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeHealthGet(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeHealthGet(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeHealthGet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -105,8 +105,8 @@ func main() {
     body := true // bool | Input boolean as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterBooleanSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterBooleanSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterBooleanSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -171,8 +171,8 @@ func main() {
     outerComposite := *openapiclient.NewOuterComposite() // OuterComposite | Input composite as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterCompositeSerialize(context.Background()).OuterComposite(outerComposite).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterCompositeSerialize(context.Background()).OuterComposite(outerComposite).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterCompositeSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -237,8 +237,8 @@ func main() {
     body := float32(8.14) // float32 | Input number as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterNumberSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterNumberSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterNumberSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -303,8 +303,8 @@ func main() {
     body := "body_example" // string | Input string as post body (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.FakeOuterStringSerialize(context.Background()).Body(body).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.FakeOuterStringSerialize(context.Background()).Body(body).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.FakeOuterStringSerialize``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -369,8 +369,8 @@ func main() {
     fileSchemaTestClass := *openapiclient.NewFileSchemaTestClass() // FileSchemaTestClass | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestBodyWithFileSchema(context.Background()).FileSchemaTestClass(fileSchemaTestClass).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestBodyWithFileSchema(context.Background()).FileSchemaTestClass(fileSchemaTestClass).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestBodyWithFileSchema``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -432,8 +432,8 @@ func main() {
     user := *openapiclient.NewUser() // User | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestBodyWithQueryParams(context.Background()).Query(query).User(user).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestBodyWithQueryParams(context.Background()).Query(query).User(user).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestBodyWithQueryParams``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -497,8 +497,8 @@ func main() {
     client := *openapiclient.NewClient() // Client | client model
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestClientModel(context.Background()).Client(client).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestClientModel(context.Background()).Client(client).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestClientModel``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -577,8 +577,8 @@ func main() {
     callback := "callback_example" // string | None (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestEndpointParameters(context.Background()).Number(number).Double(double).PatternWithoutDelimiter(patternWithoutDelimiter).Byte_(byte_).Integer(integer).Int32_(int32_).Int64_(int64_).Float(float).String_(string_).Binary(binary).Date(date).DateTime(dateTime).Password(password).Callback(callback).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestEndpointParameters(context.Background()).Number(number).Double(double).PatternWithoutDelimiter(patternWithoutDelimiter).Byte_(byte_).Integer(integer).Int32_(int32_).Int64_(int64_).Float(float).String_(string_).Binary(binary).Date(date).DateTime(dateTime).Password(password).Callback(callback).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestEndpointParameters``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -661,8 +661,8 @@ func main() {
     enumFormString := "enumFormString_example" // string | Form parameter enum test (string) (optional) (default to "-efg")
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestEnumParameters(context.Background()).EnumHeaderStringArray(enumHeaderStringArray).EnumHeaderString(enumHeaderString).EnumQueryStringArray(enumQueryStringArray).EnumQueryString(enumQueryString).EnumQueryInteger(enumQueryInteger).EnumQueryDouble(enumQueryDouble).EnumFormStringArray(enumFormStringArray).EnumFormString(enumFormString).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestEnumParameters(context.Background()).EnumHeaderStringArray(enumHeaderStringArray).EnumHeaderString(enumHeaderString).EnumQueryStringArray(enumQueryStringArray).EnumQueryString(enumQueryString).EnumQueryInteger(enumQueryInteger).EnumQueryDouble(enumQueryDouble).EnumFormStringArray(enumFormStringArray).EnumFormString(enumFormString).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestEnumParameters``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -737,8 +737,8 @@ func main() {
     int64Group := int64(789) // int64 | Integer in group parameters (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestGroupParameters(context.Background()).RequiredStringGroup(requiredStringGroup).RequiredBooleanGroup(requiredBooleanGroup).RequiredInt64Group(requiredInt64Group).StringGroup(stringGroup).BooleanGroup(booleanGroup).Int64Group(int64Group).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestGroupParameters(context.Background()).RequiredStringGroup(requiredStringGroup).RequiredBooleanGroup(requiredBooleanGroup).RequiredInt64Group(requiredInt64Group).StringGroup(stringGroup).BooleanGroup(booleanGroup).Int64Group(int64Group).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestGroupParameters``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -804,8 +804,8 @@ func main() {
     requestBody := map[string]string{"key": "Inner_example"} // map[string]string | request body
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestInlineAdditionalProperties(context.Background()).RequestBody(requestBody).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestInlineAdditionalProperties(context.Background()).RequestBody(requestBody).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestInlineAdditionalProperties``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -867,8 +867,8 @@ func main() {
     param2 := "param2_example" // string | field2
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestJsonFormData(context.Background()).Param(param).Param2(param2).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestJsonFormData(context.Background()).Param(param).Param2(param2).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestJsonFormData``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -936,8 +936,8 @@ func main() {
     context := []string{"Inner_example"} // []string | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestQueryParameterCollectionFormat(context.Background()).Pipe(pipe).Ioutil(ioutil).Http(http).Url(url).Context(context).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestQueryParameterCollectionFormat(context.Background()).Pipe(pipe).Ioutil(ioutil).Http(http).Url(url).Context(context).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestQueryParameterCollectionFormat``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -1005,8 +1005,8 @@ func main() {
     headerUnique := []string{"Inner_example"} // []string | 
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeApi.TestUniqueItemsHeaderAndQueryParameterCollectionFormat(context.Background()).QueryUnique(queryUnique).HeaderUnique(headerUnique).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeApi.TestUniqueItemsHeaderAndQueryParameterCollectionFormat(context.Background()).QueryUnique(queryUnique).HeaderUnique(headerUnique).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeApi.TestUniqueItemsHeaderAndQueryParameterCollectionFormat``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md b/samples/openapi3/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md
index 27a260ff813..688b50aa273 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/FakeClassnameTags123Api.md
@@ -32,8 +32,8 @@ func main() {
     client := *openapiclient.NewClient() // Client | client model
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.FakeClassnameTags123Api.TestClassname(context.Background()).Client(client).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.FakeClassnameTags123Api.TestClassname(context.Background()).Client(client).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `FakeClassnameTags123Api.TestClassname``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/PetApi.md b/samples/openapi3/client/petstore/go/go-petstore/docs/PetApi.md
index c99794e706d..c0522b43c9a 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/PetApi.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/PetApi.md
@@ -38,8 +38,8 @@ func main() {
     pet := *openapiclient.NewPet("doggie", []string{"PhotoUrls_example"}) // Pet | Pet object that needs to be added to the store
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.AddPet(context.Background()).Pet(pet).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.AddPet(context.Background()).Pet(pet).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.AddPet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -101,8 +101,8 @@ func main() {
     apiKey := "apiKey_example" // string |  (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.DeletePet(context.Background(), petId).ApiKey(apiKey).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.DeletePet(context.Background(), petId).ApiKey(apiKey).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.DeletePet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -170,8 +170,8 @@ func main() {
     status := []string{"Status_example"} // []string | Status values that need to be considered for filter
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.FindPetsByStatus(context.Background()).Status(status).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.FindPetsByStatus(context.Background()).Status(status).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.FindPetsByStatus``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -236,8 +236,8 @@ func main() {
     tags := []string{"Inner_example"} // []string | Tags to filter by
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.FindPetsByTags(context.Background()).Tags(tags).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.FindPetsByTags(context.Background()).Tags(tags).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.FindPetsByTags``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -302,8 +302,8 @@ func main() {
     petId := int64(789) // int64 | ID of pet to return
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.GetPetById(context.Background(), petId).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.GetPetById(context.Background(), petId).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.GetPetById``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -370,8 +370,8 @@ func main() {
     pet := *openapiclient.NewPet("doggie", []string{"PhotoUrls_example"}) // Pet | Pet object that needs to be added to the store
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UpdatePet(context.Background()).Pet(pet).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UpdatePet(context.Background()).Pet(pet).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UpdatePet``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -434,8 +434,8 @@ func main() {
     status := "status_example" // string | Updated status of the pet (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UpdatePetWithForm(context.Background(), petId).Name(name).Status(status).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UpdatePetWithForm(context.Background(), petId).Name(name).Status(status).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UpdatePetWithForm``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -504,8 +504,8 @@ func main() {
     file := os.NewFile(1234, "some_file") // *os.File | file to upload (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UploadFile(context.Background(), petId).AdditionalMetadata(additionalMetadata).File(file).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UploadFile(context.Background(), petId).AdditionalMetadata(additionalMetadata).File(file).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UploadFile``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -576,8 +576,8 @@ func main() {
     additionalMetadata := "additionalMetadata_example" // string | Additional data to pass to server (optional)
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.PetApi.UploadFileWithRequiredFile(context.Background(), petId).RequiredFile(requiredFile).AdditionalMetadata(additionalMetadata).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.PetApi.UploadFileWithRequiredFile(context.Background(), petId).RequiredFile(requiredFile).AdditionalMetadata(additionalMetadata).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `PetApi.UploadFileWithRequiredFile``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/StoreApi.md b/samples/openapi3/client/petstore/go/go-petstore/docs/StoreApi.md
index 067ea382576..70c0692ef11 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/StoreApi.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/StoreApi.md
@@ -35,8 +35,8 @@ func main() {
     orderId := "orderId_example" // string | ID of the order that needs to be deleted
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.DeleteOrder(context.Background(), orderId).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.DeleteOrder(context.Background(), orderId).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.DeleteOrder``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -102,8 +102,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.GetInventory(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.GetInventory(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.GetInventory``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -164,8 +164,8 @@ func main() {
     orderId := int64(789) // int64 | ID of pet that needs to be fetched
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.GetOrderById(context.Background(), orderId).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.GetOrderById(context.Background(), orderId).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.GetOrderById``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -232,8 +232,8 @@ func main() {
     order := *openapiclient.NewOrder() // Order | order placed for purchasing the pet
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.StoreApi.PlaceOrder(context.Background()).Order(order).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.StoreApi.PlaceOrder(context.Background()).Order(order).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `StoreApi.PlaceOrder``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/docs/UserApi.md b/samples/openapi3/client/petstore/go/go-petstore/docs/UserApi.md
index dbbbe3fa792..3176eadbd76 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/docs/UserApi.md
+++ b/samples/openapi3/client/petstore/go/go-petstore/docs/UserApi.md
@@ -39,8 +39,8 @@ func main() {
     user := *openapiclient.NewUser() // User | Created user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.CreateUser(context.Background()).User(user).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.CreateUser(context.Background()).User(user).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.CreateUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -101,8 +101,8 @@ func main() {
     user := []openapiclient.User{*openapiclient.NewUser()} // []User | List of user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.CreateUsersWithArrayInput(context.Background()).User(user).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.CreateUsersWithArrayInput(context.Background()).User(user).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.CreateUsersWithArrayInput``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -163,8 +163,8 @@ func main() {
     user := []openapiclient.User{*openapiclient.NewUser()} // []User | List of user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.CreateUsersWithListInput(context.Background()).User(user).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.CreateUsersWithListInput(context.Background()).User(user).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.CreateUsersWithListInput``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -227,8 +227,8 @@ func main() {
     username := "username_example" // string | The name that needs to be deleted
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.DeleteUser(context.Background(), username).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.DeleteUser(context.Background(), username).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.DeleteUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -293,8 +293,8 @@ func main() {
     username := "username_example" // string | The name that needs to be fetched. Use user1 for testing.
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.GetUserByName(context.Background(), username).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.GetUserByName(context.Background(), username).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.GetUserByName``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -362,8 +362,8 @@ func main() {
     password := "password_example" // string | The password for login in clear text
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.LoginUser(context.Background()).Username(username).Password(password).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.LoginUser(context.Background()).Username(username).Password(password).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.LoginUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -426,8 +426,8 @@ import (
 func main() {
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.LogoutUser(context.Background()).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.LogoutUser(context.Background()).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.LogoutUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
@@ -487,8 +487,8 @@ func main() {
     user := *openapiclient.NewUser() // User | Updated user object
 
     configuration := openapiclient.NewConfiguration()
-    api_client := openapiclient.NewAPIClient(configuration)
-    resp, r, err := api_client.UserApi.UpdateUser(context.Background(), username).User(user).Execute()
+    apiClient := openapiclient.NewAPIClient(configuration)
+    resp, r, err := apiClient.UserApi.UpdateUser(context.Background(), username).User(user).Execute()
     if err != nil {
         fmt.Fprintf(os.Stderr, "Error when calling `UserApi.UpdateUser``: %v\n", err)
         fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r)
diff --git a/samples/openapi3/client/petstore/go/go-petstore/go.mod b/samples/openapi3/client/petstore/go/go-petstore/go.mod
index 0f43de9ebb2..ead32606c72 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/go.mod
+++ b/samples/openapi3/client/petstore/go/go-petstore/go.mod
@@ -3,5 +3,5 @@ module github.com/GIT_USER_ID/GIT_REPO_ID
 go 1.13
 
 require (
-	golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99
+	golang.org/x/oauth2 v0.0.0-20210323180902-22b0adad7558
 )
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go b/samples/openapi3/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go
index f4f77661d45..56dcc6c3c94 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_array_of_array_of_number_only.go
@@ -16,7 +16,7 @@ import (
 
 // ArrayOfArrayOfNumberOnly struct for ArrayOfArrayOfNumberOnly
 type ArrayOfArrayOfNumberOnly struct {
-	ArrayArrayNumber *[][]float32 `json:"ArrayArrayNumber,omitempty"`
+	ArrayArrayNumber [][]float32 `json:"ArrayArrayNumber,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -45,12 +45,12 @@ func (o *ArrayOfArrayOfNumberOnly) GetArrayArrayNumber() [][]float32 {
 		var ret [][]float32
 		return ret
 	}
-	return *o.ArrayArrayNumber
+	return o.ArrayArrayNumber
 }
 
 // GetArrayArrayNumberOk returns a tuple with the ArrayArrayNumber field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayOfArrayOfNumberOnly) GetArrayArrayNumberOk() (*[][]float32, bool) {
+func (o *ArrayOfArrayOfNumberOnly) GetArrayArrayNumberOk() ([][]float32, bool) {
 	if o == nil || o.ArrayArrayNumber == nil {
 		return nil, false
 	}
@@ -68,7 +68,7 @@ func (o *ArrayOfArrayOfNumberOnly) HasArrayArrayNumber() bool {
 
 // SetArrayArrayNumber gets a reference to the given [][]float32 and assigns it to the ArrayArrayNumber field.
 func (o *ArrayOfArrayOfNumberOnly) SetArrayArrayNumber(v [][]float32) {
-	o.ArrayArrayNumber = &v
+	o.ArrayArrayNumber = v
 }
 
 func (o ArrayOfArrayOfNumberOnly) MarshalJSON() ([]byte, error) {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_array_of_number_only.go b/samples/openapi3/client/petstore/go/go-petstore/model_array_of_number_only.go
index 3f099edff2a..36e967f70a6 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_array_of_number_only.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_array_of_number_only.go
@@ -16,7 +16,7 @@ import (
 
 // ArrayOfNumberOnly struct for ArrayOfNumberOnly
 type ArrayOfNumberOnly struct {
-	ArrayNumber *[]float32 `json:"ArrayNumber,omitempty"`
+	ArrayNumber []float32 `json:"ArrayNumber,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -45,12 +45,12 @@ func (o *ArrayOfNumberOnly) GetArrayNumber() []float32 {
 		var ret []float32
 		return ret
 	}
-	return *o.ArrayNumber
+	return o.ArrayNumber
 }
 
 // GetArrayNumberOk returns a tuple with the ArrayNumber field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayOfNumberOnly) GetArrayNumberOk() (*[]float32, bool) {
+func (o *ArrayOfNumberOnly) GetArrayNumberOk() ([]float32, bool) {
 	if o == nil || o.ArrayNumber == nil {
 		return nil, false
 	}
@@ -68,7 +68,7 @@ func (o *ArrayOfNumberOnly) HasArrayNumber() bool {
 
 // SetArrayNumber gets a reference to the given []float32 and assigns it to the ArrayNumber field.
 func (o *ArrayOfNumberOnly) SetArrayNumber(v []float32) {
-	o.ArrayNumber = &v
+	o.ArrayNumber = v
 }
 
 func (o ArrayOfNumberOnly) MarshalJSON() ([]byte, error) {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_array_test_.go b/samples/openapi3/client/petstore/go/go-petstore/model_array_test_.go
index 82ab2eaaf84..aa07cef3a3c 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_array_test_.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_array_test_.go
@@ -16,9 +16,9 @@ import (
 
 // ArrayTest struct for ArrayTest
 type ArrayTest struct {
-	ArrayOfString *[]string `json:"array_of_string,omitempty"`
-	ArrayArrayOfInteger *[][]int64 `json:"array_array_of_integer,omitempty"`
-	ArrayArrayOfModel *[][]ReadOnlyFirst `json:"array_array_of_model,omitempty"`
+	ArrayOfString []string `json:"array_of_string,omitempty"`
+	ArrayArrayOfInteger [][]int64 `json:"array_array_of_integer,omitempty"`
+	ArrayArrayOfModel [][]ReadOnlyFirst `json:"array_array_of_model,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -47,12 +47,12 @@ func (o *ArrayTest) GetArrayOfString() []string {
 		var ret []string
 		return ret
 	}
-	return *o.ArrayOfString
+	return o.ArrayOfString
 }
 
 // GetArrayOfStringOk returns a tuple with the ArrayOfString field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayTest) GetArrayOfStringOk() (*[]string, bool) {
+func (o *ArrayTest) GetArrayOfStringOk() ([]string, bool) {
 	if o == nil || o.ArrayOfString == nil {
 		return nil, false
 	}
@@ -70,7 +70,7 @@ func (o *ArrayTest) HasArrayOfString() bool {
 
 // SetArrayOfString gets a reference to the given []string and assigns it to the ArrayOfString field.
 func (o *ArrayTest) SetArrayOfString(v []string) {
-	o.ArrayOfString = &v
+	o.ArrayOfString = v
 }
 
 // GetArrayArrayOfInteger returns the ArrayArrayOfInteger field value if set, zero value otherwise.
@@ -79,12 +79,12 @@ func (o *ArrayTest) GetArrayArrayOfInteger() [][]int64 {
 		var ret [][]int64
 		return ret
 	}
-	return *o.ArrayArrayOfInteger
+	return o.ArrayArrayOfInteger
 }
 
 // GetArrayArrayOfIntegerOk returns a tuple with the ArrayArrayOfInteger field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayTest) GetArrayArrayOfIntegerOk() (*[][]int64, bool) {
+func (o *ArrayTest) GetArrayArrayOfIntegerOk() ([][]int64, bool) {
 	if o == nil || o.ArrayArrayOfInteger == nil {
 		return nil, false
 	}
@@ -102,7 +102,7 @@ func (o *ArrayTest) HasArrayArrayOfInteger() bool {
 
 // SetArrayArrayOfInteger gets a reference to the given [][]int64 and assigns it to the ArrayArrayOfInteger field.
 func (o *ArrayTest) SetArrayArrayOfInteger(v [][]int64) {
-	o.ArrayArrayOfInteger = &v
+	o.ArrayArrayOfInteger = v
 }
 
 // GetArrayArrayOfModel returns the ArrayArrayOfModel field value if set, zero value otherwise.
@@ -111,12 +111,12 @@ func (o *ArrayTest) GetArrayArrayOfModel() [][]ReadOnlyFirst {
 		var ret [][]ReadOnlyFirst
 		return ret
 	}
-	return *o.ArrayArrayOfModel
+	return o.ArrayArrayOfModel
 }
 
 // GetArrayArrayOfModelOk returns a tuple with the ArrayArrayOfModel field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *ArrayTest) GetArrayArrayOfModelOk() (*[][]ReadOnlyFirst, bool) {
+func (o *ArrayTest) GetArrayArrayOfModelOk() ([][]ReadOnlyFirst, bool) {
 	if o == nil || o.ArrayArrayOfModel == nil {
 		return nil, false
 	}
@@ -134,7 +134,7 @@ func (o *ArrayTest) HasArrayArrayOfModel() bool {
 
 // SetArrayArrayOfModel gets a reference to the given [][]ReadOnlyFirst and assigns it to the ArrayArrayOfModel field.
 func (o *ArrayTest) SetArrayArrayOfModel(v [][]ReadOnlyFirst) {
-	o.ArrayArrayOfModel = &v
+	o.ArrayArrayOfModel = v
 }
 
 func (o ArrayTest) MarshalJSON() ([]byte, error) {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_enum_arrays.go b/samples/openapi3/client/petstore/go/go-petstore/model_enum_arrays.go
index b602cc1122f..9ed5be80d6c 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_enum_arrays.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_enum_arrays.go
@@ -17,7 +17,7 @@ import (
 // EnumArrays struct for EnumArrays
 type EnumArrays struct {
 	JustSymbol *string `json:"just_symbol,omitempty"`
-	ArrayEnum *[]string `json:"array_enum,omitempty"`
+	ArrayEnum []string `json:"array_enum,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -78,12 +78,12 @@ func (o *EnumArrays) GetArrayEnum() []string {
 		var ret []string
 		return ret
 	}
-	return *o.ArrayEnum
+	return o.ArrayEnum
 }
 
 // GetArrayEnumOk returns a tuple with the ArrayEnum field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *EnumArrays) GetArrayEnumOk() (*[]string, bool) {
+func (o *EnumArrays) GetArrayEnumOk() ([]string, bool) {
 	if o == nil || o.ArrayEnum == nil {
 		return nil, false
 	}
@@ -101,7 +101,7 @@ func (o *EnumArrays) HasArrayEnum() bool {
 
 // SetArrayEnum gets a reference to the given []string and assigns it to the ArrayEnum field.
 func (o *EnumArrays) SetArrayEnum(v []string) {
-	o.ArrayEnum = &v
+	o.ArrayEnum = v
 }
 
 func (o EnumArrays) MarshalJSON() ([]byte, error) {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_file_schema_test_class.go b/samples/openapi3/client/petstore/go/go-petstore/model_file_schema_test_class.go
index 49c463209df..a61e7d43a7b 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_file_schema_test_class.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_file_schema_test_class.go
@@ -17,7 +17,7 @@ import (
 // FileSchemaTestClass struct for FileSchemaTestClass
 type FileSchemaTestClass struct {
 	File *File `json:"file,omitempty"`
-	Files *[]File `json:"files,omitempty"`
+	Files []File `json:"files,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -78,12 +78,12 @@ func (o *FileSchemaTestClass) GetFiles() []File {
 		var ret []File
 		return ret
 	}
-	return *o.Files
+	return o.Files
 }
 
 // GetFilesOk returns a tuple with the Files field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *FileSchemaTestClass) GetFilesOk() (*[]File, bool) {
+func (o *FileSchemaTestClass) GetFilesOk() ([]File, bool) {
 	if o == nil || o.Files == nil {
 		return nil, false
 	}
@@ -101,7 +101,7 @@ func (o *FileSchemaTestClass) HasFiles() bool {
 
 // SetFiles gets a reference to the given []File and assigns it to the Files field.
 func (o *FileSchemaTestClass) SetFiles(v []File) {
-	o.Files = &v
+	o.Files = v
 }
 
 func (o FileSchemaTestClass) MarshalJSON() ([]byte, error) {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_fruit.go b/samples/openapi3/client/petstore/go/go-petstore/model_fruit.go
index 555b8ab7484..74b0aa52b3c 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_fruit.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_fruit.go
@@ -23,12 +23,16 @@ type Fruit struct {
 
 // AppleAsFruit is a convenience function that returns Apple wrapped in Fruit
 func AppleAsFruit(v *Apple) Fruit {
-	return Fruit{ Apple: v}
+	return Fruit{
+		Apple: v,
+	}
 }
 
 // BananaAsFruit is a convenience function that returns Banana wrapped in Fruit
 func BananaAsFruit(v *Banana) Fruit {
-	return Fruit{ Banana: v}
+	return Fruit{
+		Banana: v,
+	}
 }
 
 
@@ -37,7 +41,7 @@ func (dst *Fruit) UnmarshalJSON(data []byte) error {
 	var err error
 	match := 0
 	// try to unmarshal data into Apple
-	err = json.Unmarshal(data, &dst.Apple)
+	err = newStrictDecoder(data).Decode(&dst.Apple)
 	if err == nil {
 		jsonApple, _ := json.Marshal(dst.Apple)
 		if string(jsonApple) == "{}" { // empty struct
@@ -50,7 +54,7 @@ func (dst *Fruit) UnmarshalJSON(data []byte) error {
 	}
 
 	// try to unmarshal data into Banana
-	err = json.Unmarshal(data, &dst.Banana)
+	err = newStrictDecoder(data).Decode(&dst.Banana)
 	if err == nil {
 		jsonBanana, _ := json.Marshal(dst.Banana)
 		if string(jsonBanana) == "{}" { // empty struct
@@ -90,6 +94,9 @@ func (src Fruit) MarshalJSON() ([]byte, error) {
 
 // Get the actual instance
 func (obj *Fruit) GetActualInstance() (interface{}) {
+	if obj == nil {
+		return nil
+	}
 	if obj.Apple != nil {
 		return obj.Apple
 	}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_fruit_req.go b/samples/openapi3/client/petstore/go/go-petstore/model_fruit_req.go
index c3d6ea1cea6..82ff8714324 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_fruit_req.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_fruit_req.go
@@ -23,12 +23,16 @@ type FruitReq struct {
 
 // AppleReqAsFruitReq is a convenience function that returns AppleReq wrapped in FruitReq
 func AppleReqAsFruitReq(v *AppleReq) FruitReq {
-	return FruitReq{ AppleReq: v}
+	return FruitReq{
+		AppleReq: v,
+	}
 }
 
 // BananaReqAsFruitReq is a convenience function that returns BananaReq wrapped in FruitReq
 func BananaReqAsFruitReq(v *BananaReq) FruitReq {
-	return FruitReq{ BananaReq: v}
+	return FruitReq{
+		BananaReq: v,
+	}
 }
 
 
@@ -37,7 +41,7 @@ func (dst *FruitReq) UnmarshalJSON(data []byte) error {
 	var err error
 	match := 0
 	// try to unmarshal data into AppleReq
-	err = json.Unmarshal(data, &dst.AppleReq)
+	err = newStrictDecoder(data).Decode(&dst.AppleReq)
 	if err == nil {
 		jsonAppleReq, _ := json.Marshal(dst.AppleReq)
 		if string(jsonAppleReq) == "{}" { // empty struct
@@ -50,7 +54,7 @@ func (dst *FruitReq) UnmarshalJSON(data []byte) error {
 	}
 
 	// try to unmarshal data into BananaReq
-	err = json.Unmarshal(data, &dst.BananaReq)
+	err = newStrictDecoder(data).Decode(&dst.BananaReq)
 	if err == nil {
 		jsonBananaReq, _ := json.Marshal(dst.BananaReq)
 		if string(jsonBananaReq) == "{}" { // empty struct
@@ -90,6 +94,9 @@ func (src FruitReq) MarshalJSON() ([]byte, error) {
 
 // Get the actual instance
 func (obj *FruitReq) GetActualInstance() (interface{}) {
+	if obj == nil {
+		return nil
+	}
 	if obj.AppleReq != nil {
 		return obj.AppleReq
 	}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object.go b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object.go
index 6922f820e8a..9b407ec0186 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object.go
@@ -19,7 +19,7 @@ type InlineObject struct {
 	// Updated name of the pet
 	Name *string `json:"name,omitempty"`
 	// Updated status of the pet
-	Status *string `json:"status,omitempty"`
+	Status               *string `json:"status,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -175,5 +175,3 @@ func (v *NullableInlineObject) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_1.go b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_1.go
index 877677710ec..ee4202e1e66 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_1.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_1.go
@@ -20,7 +20,7 @@ type InlineObject1 struct {
 	// Additional data to pass to server
 	AdditionalMetadata *string `json:"additionalMetadata,omitempty"`
 	// file to upload
-	File **os.File `json:"file,omitempty"`
+	File                 **os.File `json:"file,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -176,5 +176,3 @@ func (v *NullableInlineObject1) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_2.go b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_2.go
index 8b9d4b66db3..889cced58b5 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_2.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_2.go
@@ -19,7 +19,7 @@ type InlineObject2 struct {
 	// Form parameter enum test (string array)
 	EnumFormStringArray *[]string `json:"enum_form_string_array,omitempty"`
 	// Form parameter enum test (string)
-	EnumFormString *string `json:"enum_form_string,omitempty"`
+	EnumFormString       *string `json:"enum_form_string,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -179,5 +179,3 @@ func (v *NullableInlineObject2) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_3.go b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_3.go
index 4c31bcd015d..e85cadf01cd 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_3.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_3.go
@@ -45,7 +45,7 @@ type InlineObject3 struct {
 	// None
 	Password *string `json:"password,omitempty"`
 	// None
-	Callback *string `json:"callback,omitempty"`
+	Callback             *string `json:"callback,omitempty"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -55,7 +55,7 @@ type _InlineObject3 InlineObject3
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewInlineObject3(number float32, double float64, patternWithoutDelimiter string, byte_ string, ) *InlineObject3 {
+func NewInlineObject3(number float32, double float64, patternWithoutDelimiter string, byte_ string) *InlineObject3 {
 	this := InlineObject3{}
 	this.Number = number
 	this.Double = double
@@ -170,7 +170,7 @@ func (o *InlineObject3) SetInt64(v int64) {
 
 // GetNumber returns the Number field value
 func (o *InlineObject3) GetNumber() float32 {
-	if o == nil  {
+	if o == nil {
 		var ret float32
 		return ret
 	}
@@ -181,7 +181,7 @@ func (o *InlineObject3) GetNumber() float32 {
 // GetNumberOk returns a tuple with the Number field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject3) GetNumberOk() (*float32, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.Number, true
@@ -226,7 +226,7 @@ func (o *InlineObject3) SetFloat(v float32) {
 
 // GetDouble returns the Double field value
 func (o *InlineObject3) GetDouble() float64 {
-	if o == nil  {
+	if o == nil {
 		var ret float64
 		return ret
 	}
@@ -237,7 +237,7 @@ func (o *InlineObject3) GetDouble() float64 {
 // GetDoubleOk returns a tuple with the Double field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject3) GetDoubleOk() (*float64, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.Double, true
@@ -282,7 +282,7 @@ func (o *InlineObject3) SetString(v string) {
 
 // GetPatternWithoutDelimiter returns the PatternWithoutDelimiter field value
 func (o *InlineObject3) GetPatternWithoutDelimiter() string {
-	if o == nil  {
+	if o == nil {
 		var ret string
 		return ret
 	}
@@ -293,7 +293,7 @@ func (o *InlineObject3) GetPatternWithoutDelimiter() string {
 // GetPatternWithoutDelimiterOk returns a tuple with the PatternWithoutDelimiter field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject3) GetPatternWithoutDelimiterOk() (*string, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.PatternWithoutDelimiter, true
@@ -306,7 +306,7 @@ func (o *InlineObject3) SetPatternWithoutDelimiter(v string) {
 
 // GetByte returns the Byte field value
 func (o *InlineObject3) GetByte() string {
-	if o == nil  {
+	if o == nil {
 		var ret string
 		return ret
 	}
@@ -317,7 +317,7 @@ func (o *InlineObject3) GetByte() string {
 // GetByteOk returns a tuple with the Byte field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject3) GetByteOk() (*string, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.Byte, true
@@ -605,5 +605,3 @@ func (v *NullableInlineObject3) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_4.go b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_4.go
index 11ae1c06c47..bf0e5771b2a 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_4.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_4.go
@@ -19,7 +19,7 @@ type InlineObject4 struct {
 	// field1
 	Param string `json:"param"`
 	// field2
-	Param2 string `json:"param2"`
+	Param2               string `json:"param2"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -29,7 +29,7 @@ type _InlineObject4 InlineObject4
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewInlineObject4(param string, param2 string, ) *InlineObject4 {
+func NewInlineObject4(param string, param2 string) *InlineObject4 {
 	this := InlineObject4{}
 	this.Param = param
 	this.Param2 = param2
@@ -46,7 +46,7 @@ func NewInlineObject4WithDefaults() *InlineObject4 {
 
 // GetParam returns the Param field value
 func (o *InlineObject4) GetParam() string {
-	if o == nil  {
+	if o == nil {
 		var ret string
 		return ret
 	}
@@ -57,7 +57,7 @@ func (o *InlineObject4) GetParam() string {
 // GetParamOk returns a tuple with the Param field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject4) GetParamOk() (*string, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.Param, true
@@ -70,7 +70,7 @@ func (o *InlineObject4) SetParam(v string) {
 
 // GetParam2 returns the Param2 field value
 func (o *InlineObject4) GetParam2() string {
-	if o == nil  {
+	if o == nil {
 		var ret string
 		return ret
 	}
@@ -81,7 +81,7 @@ func (o *InlineObject4) GetParam2() string {
 // GetParam2Ok returns a tuple with the Param2 field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject4) GetParam2Ok() (*string, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.Param2, true
@@ -161,5 +161,3 @@ func (v *NullableInlineObject4) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_5.go b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_5.go
index b60d46fc04d..aacdd7db6e9 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_5.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_inline_object_5.go
@@ -20,7 +20,7 @@ type InlineObject5 struct {
 	// Additional data to pass to server
 	AdditionalMetadata *string `json:"additionalMetadata,omitempty"`
 	// file to upload
-	RequiredFile *os.File `json:"requiredFile"`
+	RequiredFile         *os.File `json:"requiredFile"`
 	AdditionalProperties map[string]interface{}
 }
 
@@ -30,7 +30,7 @@ type _InlineObject5 InlineObject5
 // This constructor will assign default values to properties that have it defined,
 // and makes sure properties required by API are set, but the set of arguments
 // will change when the set of required properties is changed
-func NewInlineObject5(requiredFile *os.File, ) *InlineObject5 {
+func NewInlineObject5(requiredFile *os.File) *InlineObject5 {
 	this := InlineObject5{}
 	this.RequiredFile = requiredFile
 	return &this
@@ -78,7 +78,7 @@ func (o *InlineObject5) SetAdditionalMetadata(v string) {
 
 // GetRequiredFile returns the RequiredFile field value
 func (o *InlineObject5) GetRequiredFile() *os.File {
-	if o == nil  {
+	if o == nil {
 		var ret *os.File
 		return ret
 	}
@@ -89,7 +89,7 @@ func (o *InlineObject5) GetRequiredFile() *os.File {
 // GetRequiredFileOk returns a tuple with the RequiredFile field value
 // and a boolean to check if the value has been set.
 func (o *InlineObject5) GetRequiredFileOk() (**os.File, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.RequiredFile, true
@@ -169,5 +169,3 @@ func (v *NullableInlineObject5) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_mammal.go b/samples/openapi3/client/petstore/go/go-petstore/model_mammal.go
index a67af74d582..7f899aa6db7 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_mammal.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_mammal.go
@@ -23,12 +23,16 @@ type Mammal struct {
 
 // WhaleAsMammal is a convenience function that returns Whale wrapped in Mammal
 func WhaleAsMammal(v *Whale) Mammal {
-	return Mammal{ Whale: v}
+	return Mammal{
+		Whale: v,
+	}
 }
 
 // ZebraAsMammal is a convenience function that returns Zebra wrapped in Mammal
 func ZebraAsMammal(v *Zebra) Mammal {
-	return Mammal{ Zebra: v}
+	return Mammal{
+		Zebra: v,
+	}
 }
 
 
@@ -37,7 +41,7 @@ func (dst *Mammal) UnmarshalJSON(data []byte) error {
 	var err error
 	match := 0
 	// try to unmarshal data into Whale
-	err = json.Unmarshal(data, &dst.Whale)
+	err = newStrictDecoder(data).Decode(&dst.Whale)
 	if err == nil {
 		jsonWhale, _ := json.Marshal(dst.Whale)
 		if string(jsonWhale) == "{}" { // empty struct
@@ -50,7 +54,7 @@ func (dst *Mammal) UnmarshalJSON(data []byte) error {
 	}
 
 	// try to unmarshal data into Zebra
-	err = json.Unmarshal(data, &dst.Zebra)
+	err = newStrictDecoder(data).Decode(&dst.Zebra)
 	if err == nil {
 		jsonZebra, _ := json.Marshal(dst.Zebra)
 		if string(jsonZebra) == "{}" { // empty struct
@@ -90,6 +94,9 @@ func (src Mammal) MarshalJSON() ([]byte, error) {
 
 // Get the actual instance
 func (obj *Mammal) GetActualInstance() (interface{}) {
+	if obj == nil {
+		return nil
+	}
 	if obj.Whale != nil {
 		return obj.Whale
 	}
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_nullable_class.go b/samples/openapi3/client/petstore/go/go-petstore/model_nullable_class.go
index b46f891329e..dbf4bfdbb89 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_nullable_class.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_nullable_class.go
@@ -25,10 +25,10 @@ type NullableClass struct {
 	DatetimeProp NullableTime `json:"datetime_prop,omitempty"`
 	ArrayNullableProp []map[string]interface{} `json:"array_nullable_prop,omitempty"`
 	ArrayAndItemsNullableProp []*map[string]interface{} `json:"array_and_items_nullable_prop,omitempty"`
-	ArrayItemsNullable *[]*map[string]interface{} `json:"array_items_nullable,omitempty"`
+	ArrayItemsNullable []*map[string]interface{} `json:"array_items_nullable,omitempty"`
 	ObjectNullableProp map[string]map[string]interface{} `json:"object_nullable_prop,omitempty"`
 	ObjectAndItemsNullableProp map[string]map[string]interface{} `json:"object_and_items_nullable_prop,omitempty"`
-	ObjectItemsNullable *map[string]map[string]interface{} `json:"object_items_nullable,omitempty"`
+	ObjectItemsNullable map[string]map[string]interface{} `json:"object_items_nullable,omitempty"`
 }
 
 // NewNullableClass instantiates a new NullableClass object
@@ -316,11 +316,11 @@ func (o *NullableClass) GetArrayNullableProp() []map[string]interface{} {
 // GetArrayNullablePropOk returns a tuple with the ArrayNullableProp field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *NullableClass) GetArrayNullablePropOk() (*[]map[string]interface{}, bool) {
+func (o *NullableClass) GetArrayNullablePropOk() ([]map[string]interface{}, bool) {
 	if o == nil || o.ArrayNullableProp == nil {
 		return nil, false
 	}
-	return &o.ArrayNullableProp, true
+	return o.ArrayNullableProp, true
 }
 
 // HasArrayNullableProp returns a boolean if a field has been set.
@@ -349,11 +349,11 @@ func (o *NullableClass) GetArrayAndItemsNullableProp() []*map[string]interface{}
 // GetArrayAndItemsNullablePropOk returns a tuple with the ArrayAndItemsNullableProp field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *NullableClass) GetArrayAndItemsNullablePropOk() (*[]*map[string]interface{}, bool) {
+func (o *NullableClass) GetArrayAndItemsNullablePropOk() ([]*map[string]interface{}, bool) {
 	if o == nil || o.ArrayAndItemsNullableProp == nil {
 		return nil, false
 	}
-	return &o.ArrayAndItemsNullableProp, true
+	return o.ArrayAndItemsNullableProp, true
 }
 
 // HasArrayAndItemsNullableProp returns a boolean if a field has been set.
@@ -376,12 +376,12 @@ func (o *NullableClass) GetArrayItemsNullable() []*map[string]interface{} {
 		var ret []*map[string]interface{}
 		return ret
 	}
-	return *o.ArrayItemsNullable
+	return o.ArrayItemsNullable
 }
 
 // GetArrayItemsNullableOk returns a tuple with the ArrayItemsNullable field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NullableClass) GetArrayItemsNullableOk() (*[]*map[string]interface{}, bool) {
+func (o *NullableClass) GetArrayItemsNullableOk() ([]*map[string]interface{}, bool) {
 	if o == nil || o.ArrayItemsNullable == nil {
 		return nil, false
 	}
@@ -399,7 +399,7 @@ func (o *NullableClass) HasArrayItemsNullable() bool {
 
 // SetArrayItemsNullable gets a reference to the given []*map[string]interface{} and assigns it to the ArrayItemsNullable field.
 func (o *NullableClass) SetArrayItemsNullable(v []*map[string]interface{}) {
-	o.ArrayItemsNullable = &v
+	o.ArrayItemsNullable = v
 }
 
 // GetObjectNullableProp returns the ObjectNullableProp field value if set, zero value otherwise (both if not set or set to explicit null).
@@ -414,11 +414,11 @@ func (o *NullableClass) GetObjectNullableProp() map[string]map[string]interface{
 // GetObjectNullablePropOk returns a tuple with the ObjectNullableProp field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *NullableClass) GetObjectNullablePropOk() (*map[string]map[string]interface{}, bool) {
+func (o *NullableClass) GetObjectNullablePropOk() (map[string]map[string]interface{}, bool) {
 	if o == nil || o.ObjectNullableProp == nil {
 		return nil, false
 	}
-	return &o.ObjectNullableProp, true
+	return o.ObjectNullableProp, true
 }
 
 // HasObjectNullableProp returns a boolean if a field has been set.
@@ -447,11 +447,11 @@ func (o *NullableClass) GetObjectAndItemsNullableProp() map[string]map[string]in
 // GetObjectAndItemsNullablePropOk returns a tuple with the ObjectAndItemsNullableProp field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *NullableClass) GetObjectAndItemsNullablePropOk() (*map[string]map[string]interface{}, bool) {
+func (o *NullableClass) GetObjectAndItemsNullablePropOk() (map[string]map[string]interface{}, bool) {
 	if o == nil || o.ObjectAndItemsNullableProp == nil {
 		return nil, false
 	}
-	return &o.ObjectAndItemsNullableProp, true
+	return o.ObjectAndItemsNullableProp, true
 }
 
 // HasObjectAndItemsNullableProp returns a boolean if a field has been set.
@@ -474,12 +474,12 @@ func (o *NullableClass) GetObjectItemsNullable() map[string]map[string]interface
 		var ret map[string]map[string]interface{}
 		return ret
 	}
-	return *o.ObjectItemsNullable
+	return o.ObjectItemsNullable
 }
 
 // GetObjectItemsNullableOk returns a tuple with the ObjectItemsNullable field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *NullableClass) GetObjectItemsNullableOk() (*map[string]map[string]interface{}, bool) {
+func (o *NullableClass) GetObjectItemsNullableOk() (map[string]map[string]interface{}, bool) {
 	if o == nil || o.ObjectItemsNullable == nil {
 		return nil, false
 	}
@@ -497,7 +497,7 @@ func (o *NullableClass) HasObjectItemsNullable() bool {
 
 // SetObjectItemsNullable gets a reference to the given map[string]map[string]interface{} and assigns it to the ObjectItemsNullable field.
 func (o *NullableClass) SetObjectItemsNullable(v map[string]map[string]interface{}) {
-	o.ObjectItemsNullable = &v
+	o.ObjectItemsNullable = v
 }
 
 func (o NullableClass) MarshalJSON() ([]byte, error) {
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_outer_object_with_enum_property.go b/samples/openapi3/client/petstore/go/go-petstore/model_outer_object_with_enum_property.go
index ed972e498d2..bdde33f4417 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_outer_object_with_enum_property.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_outer_object_with_enum_property.go
@@ -50,7 +50,7 @@ func (o *OuterObjectWithEnumProperty) GetValue() OuterEnumInteger {
 // GetValueOk returns a tuple with the Value field value
 // and a boolean to check if the value has been set.
 func (o *OuterObjectWithEnumProperty) GetValueOk() (*OuterEnumInteger, bool) {
-	if o == nil  {
+	if o == nil {
 		return nil, false
 	}
 	return &o.Value, true
@@ -104,5 +104,3 @@ func (v *NullableOuterObjectWithEnumProperty) UnmarshalJSON(src []byte) error {
 	v.isSet = true
 	return json.Unmarshal(src, &v.value)
 }
-
-
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_pet.go b/samples/openapi3/client/petstore/go/go-petstore/model_pet.go
index 6a856bf7689..8dffc304e74 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_pet.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_pet.go
@@ -20,7 +20,7 @@ type Pet struct {
 	Category *Category `json:"category,omitempty"`
 	Name string `json:"name"`
 	PhotoUrls []string `json:"photoUrls"`
-	Tags *[]Tag `json:"tags,omitempty"`
+	Tags []Tag `json:"tags,omitempty"`
 	// pet status in the store
 	// Deprecated
 	Status *string `json:"status,omitempty"`
@@ -148,11 +148,11 @@ func (o *Pet) GetPhotoUrls() []string {
 
 // GetPhotoUrlsOk returns a tuple with the PhotoUrls field value
 // and a boolean to check if the value has been set.
-func (o *Pet) GetPhotoUrlsOk() (*[]string, bool) {
+func (o *Pet) GetPhotoUrlsOk() ([]string, bool) {
 	if o == nil  {
 		return nil, false
 	}
-	return &o.PhotoUrls, true
+	return o.PhotoUrls, true
 }
 
 // SetPhotoUrls sets field value
@@ -166,12 +166,12 @@ func (o *Pet) GetTags() []Tag {
 		var ret []Tag
 		return ret
 	}
-	return *o.Tags
+	return o.Tags
 }
 
 // GetTagsOk returns a tuple with the Tags field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *Pet) GetTagsOk() (*[]Tag, bool) {
+func (o *Pet) GetTagsOk() ([]Tag, bool) {
 	if o == nil || o.Tags == nil {
 		return nil, false
 	}
@@ -189,7 +189,7 @@ func (o *Pet) HasTags() bool {
 
 // SetTags gets a reference to the given []Tag and assigns it to the Tags field.
 func (o *Pet) SetTags(v []Tag) {
-	o.Tags = &v
+	o.Tags = v
 }
 
 // GetStatus returns the Status field value if set, zero value otherwise.
diff --git a/samples/openapi3/client/petstore/go/go-petstore/model_user.go b/samples/openapi3/client/petstore/go/go-petstore/model_user.go
index 85271ee249e..a4b6dc232ef 100644
--- a/samples/openapi3/client/petstore/go/go-petstore/model_user.go
+++ b/samples/openapi3/client/petstore/go/go-petstore/model_user.go
@@ -26,7 +26,7 @@ type User struct {
 	// User Status
 	UserStatus *int32 `json:"userStatus,omitempty"`
 	// test code generation for objects Value must be a map of strings to values. It cannot be the 'null' value.
-	ArbitraryObject *map[string]interface{} `json:"arbitraryObject,omitempty"`
+	ArbitraryObject map[string]interface{} `json:"arbitraryObject,omitempty"`
 	// test code generation for nullable objects. Value must be a map of strings to values or the 'null' value.
 	ArbitraryNullableObject map[string]interface{} `json:"arbitraryNullableObject,omitempty"`
 	// test code generation for any type Value can be any type - string, number, boolean, array or object.
@@ -317,12 +317,12 @@ func (o *User) GetArbitraryObject() map[string]interface{} {
 		var ret map[string]interface{}
 		return ret
 	}
-	return *o.ArbitraryObject
+	return o.ArbitraryObject
 }
 
 // GetArbitraryObjectOk returns a tuple with the ArbitraryObject field value if set, nil otherwise
 // and a boolean to check if the value has been set.
-func (o *User) GetArbitraryObjectOk() (*map[string]interface{}, bool) {
+func (o *User) GetArbitraryObjectOk() (map[string]interface{}, bool) {
 	if o == nil || o.ArbitraryObject == nil {
 		return nil, false
 	}
@@ -340,7 +340,7 @@ func (o *User) HasArbitraryObject() bool {
 
 // SetArbitraryObject gets a reference to the given map[string]interface{} and assigns it to the ArbitraryObject field.
 func (o *User) SetArbitraryObject(v map[string]interface{}) {
-	o.ArbitraryObject = &v
+	o.ArbitraryObject = v
 }
 
 // GetArbitraryNullableObject returns the ArbitraryNullableObject field value if set, zero value otherwise (both if not set or set to explicit null).
@@ -355,11 +355,11 @@ func (o *User) GetArbitraryNullableObject() map[string]interface{} {
 // GetArbitraryNullableObjectOk returns a tuple with the ArbitraryNullableObject field value if set, nil otherwise
 // and a boolean to check if the value has been set.
 // NOTE: If the value is an explicit nil, `nil, true` will be returned
-func (o *User) GetArbitraryNullableObjectOk() (*map[string]interface{}, bool) {
+func (o *User) GetArbitraryNullableObjectOk() (map[string]interface{}, bool) {
 	if o == nil || o.ArbitraryNullableObject == nil {
 		return nil, false
 	}
-	return &o.ArbitraryNullableObject, true
+	return o.ArbitraryNullableObject, true
 }
 
 // HasArbitraryNullableObject returns a boolean if a field has been set.
diff --git a/samples/openapi3/client/petstore/go/go.mod b/samples/openapi3/client/petstore/go/go.mod
new file mode 100644
index 00000000000..a35619c519f
--- /dev/null
+++ b/samples/openapi3/client/petstore/go/go.mod
@@ -0,0 +1,11 @@
+module github.com/OpenAPITools/openapi-generator/samples/openapi3/client/petstore/go
+
+go 1.16
+
+replace go-petstore => ./go-petstore
+
+require (
+	github.com/stretchr/testify v1.7.0
+	go-petstore v0.0.0-00010101000000-000000000000
+	golang.org/x/oauth2 v0.0.0-20210323180902-22b0adad7558
+)
diff --git a/samples/openapi3/client/petstore/go/go.sum b/samples/openapi3/client/petstore/go/go.sum
new file mode 100644
index 00000000000..0df1d1a38a0
--- /dev/null
+++ b/samples/openapi3/client/petstore/go/go.sum
@@ -0,0 +1,371 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
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+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
diff --git a/samples/openapi3/client/petstore/go/http_signature_test.go b/samples/openapi3/client/petstore/go/http_signature_test.go
index 6348599111a..104cd00f03e 100644
--- a/samples/openapi3/client/petstore/go/http_signature_test.go
+++ b/samples/openapi3/client/petstore/go/http_signature_test.go
@@ -30,7 +30,7 @@ import (
 	"testing"
 	"time"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 // Test RSA private key as published in Appendix C 'Test Values' of
@@ -276,7 +276,7 @@ func executeHttpSignatureAuth(t *testing.T, authConfig *sw.HttpSignatureAuth, ex
 	newPet := (sw.Pet{Id: sw.PtrInt64(12992), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"},
 		Status:    sw.PtrString("pending"),
-		Tags:      &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags:      []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	fmt.Printf("Request with HTTP signature. Scheme: '%s'. Algorithm: '%s'. MaxValidity: %v. Headers: '%v'\n",
 		authConfig.SigningScheme, authConfig.SigningAlgorithm, authConfig.SignatureMaxValidity, authConfig.SignedHeaders)
diff --git a/samples/openapi3/client/petstore/go/model_test.go b/samples/openapi3/client/petstore/go/model_test.go
index 39e73f00840..0d7035eec85 100644
--- a/samples/openapi3/client/petstore/go/model_test.go
+++ b/samples/openapi3/client/petstore/go/model_test.go
@@ -4,8 +4,8 @@ import (
 	"encoding/json"
 	"testing"
 
-	sw "./go-petstore"
 	"github.com/stretchr/testify/assert"
+	sw "go-petstore"
 )
 
 func TestBanana(t *testing.T) {
diff --git a/samples/openapi3/client/petstore/go/nullable_marshalling_test.go b/samples/openapi3/client/petstore/go/nullable_marshalling_test.go
index 6422846c29e..1ad208b13c9 100644
--- a/samples/openapi3/client/petstore/go/nullable_marshalling_test.go
+++ b/samples/openapi3/client/petstore/go/nullable_marshalling_test.go
@@ -1,71 +1,71 @@
 package main
 
 import (
-    "encoding/json"
-    "fmt"
-    "testing"
+	"encoding/json"
+	"fmt"
+	"testing"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 func TestNullableMarshalling(t *testing.T) {
-    var fv float32 = 1.1
-    nc := sw.NullableClass{
-        IntegerProp: *sw.NewNullableInt32(nil),
-        NumberProp: *sw.NewNullableFloat32(&fv),
-        // BooleanProp is also nullable, but we leave it unset, so it shouldn't be in the JSON
-    }
-    res, err := json.Marshal(nc)
-    if err != nil {
-        t.Errorf("Error while marshalling structure with Nullables: %v", err)
-    }
-    expected := `{"integer_prop":null,"number_prop":1.1}`
-    assertStringsEqual(t, expected, string(res))
-    // try unmarshalling now
-    var unc sw.NullableClass
-    err = json.Unmarshal(res, &unc)
-    if err != nil {
-        t.Errorf("Error while unmarshalling structure with Nullables: %v", err)
-    }
-    if unc.BooleanProp.IsSet() || unc.BooleanProp.Get() != nil {
-        t.Errorf("Unmarshalled BooleanProp not empty+unset: %+v", unc.BooleanProp)
-    }
-    if !unc.IntegerProp.IsSet() || unc.IntegerProp.Get() != nil {
-        t.Errorf("Unmarshalled IntegerProp not explicit null: %+v", unc.IntegerProp)
-    }
-    if !unc.NumberProp.IsSet() || *unc.NumberProp.Get() != fv {
-        t.Errorf("Unmarshalled NumberProp not set to value 1.1: %+v", unc.NumberProp)
-    }
+	var fv float32 = 1.1
+	nc := sw.NullableClass{
+		IntegerProp: *sw.NewNullableInt32(nil),
+		NumberProp:  *sw.NewNullableFloat32(&fv),
+		// BooleanProp is also nullable, but we leave it unset, so it shouldn't be in the JSON
+	}
+	res, err := json.Marshal(nc)
+	if err != nil {
+		t.Errorf("Error while marshalling structure with Nullables: %v", err)
+	}
+	expected := `{"integer_prop":null,"number_prop":1.1}`
+	assertStringsEqual(t, expected, string(res))
+	// try unmarshalling now
+	var unc sw.NullableClass
+	err = json.Unmarshal(res, &unc)
+	if err != nil {
+		t.Errorf("Error while unmarshalling structure with Nullables: %v", err)
+	}
+	if unc.BooleanProp.IsSet() || unc.BooleanProp.Get() != nil {
+		t.Errorf("Unmarshalled BooleanProp not empty+unset: %+v", unc.BooleanProp)
+	}
+	if !unc.IntegerProp.IsSet() || unc.IntegerProp.Get() != nil {
+		t.Errorf("Unmarshalled IntegerProp not explicit null: %+v", unc.IntegerProp)
+	}
+	if !unc.NumberProp.IsSet() || *unc.NumberProp.Get() != fv {
+		t.Errorf("Unmarshalled NumberProp not set to value 1.1: %+v", unc.NumberProp)
+	}
 
-    // change the values a bit to make sure the Set/Unset methods work correctly
-    nc.IntegerProp.Unset()
-    bv := false
-    nc.BooleanProp.Set(&bv)
-    res, err = json.Marshal(nc)
-    if err != nil {
-        t.Errorf("Error while marshalling structure with Nullables: %v", err)
-    }
-    expected = `{"boolean_prop":false,"number_prop":1.1}`
-    assertStringsEqual(t, expected, string(res))
-    // try unmarshalling now
-    var unc2 sw.NullableClass
-    err = json.Unmarshal(res, &unc2)
-    if err != nil {
-        t.Errorf("Error while unmarshalling structure with Nullables: %v", err)
-    }
-    if !unc2.BooleanProp.IsSet() || *unc2.BooleanProp.Get() != false {
-        t.Errorf("Unmarshalled BooleanProp not empty+unset: %+v", unc2.BooleanProp)
-    }
-    if unc2.IntegerProp.IsSet() || unc2.IntegerProp.Get() != nil {
-        t.Errorf("Unmarshalled IntegerProp not explicit null: %+v", unc2.IntegerProp)
-    }
-    if !unc.NumberProp.IsSet() || *unc.NumberProp.Get() != fv {
-        t.Errorf("Unmarshalled NumberProp not set to value 1.1: %+v", unc.NumberProp)
-    }
+	// change the values a bit to make sure the Set/Unset methods work correctly
+	nc.IntegerProp.Unset()
+	bv := false
+	nc.BooleanProp.Set(&bv)
+	res, err = json.Marshal(nc)
+	if err != nil {
+		t.Errorf("Error while marshalling structure with Nullables: %v", err)
+	}
+	expected = `{"boolean_prop":false,"number_prop":1.1}`
+	assertStringsEqual(t, expected, string(res))
+	// try unmarshalling now
+	var unc2 sw.NullableClass
+	err = json.Unmarshal(res, &unc2)
+	if err != nil {
+		t.Errorf("Error while unmarshalling structure with Nullables: %v", err)
+	}
+	if !unc2.BooleanProp.IsSet() || *unc2.BooleanProp.Get() != false {
+		t.Errorf("Unmarshalled BooleanProp not empty+unset: %+v", unc2.BooleanProp)
+	}
+	if unc2.IntegerProp.IsSet() || unc2.IntegerProp.Get() != nil {
+		t.Errorf("Unmarshalled IntegerProp not explicit null: %+v", unc2.IntegerProp)
+	}
+	if !unc.NumberProp.IsSet() || *unc.NumberProp.Get() != fv {
+		t.Errorf("Unmarshalled NumberProp not set to value 1.1: %+v", unc.NumberProp)
+	}
 }
 
 func assertStringsEqual(t *testing.T, expected, actual string) {
-    if expected != actual {
-        t.Errorf(fmt.Sprintf("`%s` (expected) != `%s` (actual)", expected, actual))
-    }
+	if expected != actual {
+		t.Errorf(fmt.Sprintf("`%s` (expected) != `%s` (actual)", expected, actual))
+	}
 }
diff --git a/samples/openapi3/client/petstore/go/pet_api_test.go b/samples/openapi3/client/petstore/go/pet_api_test.go
index 9f0a154f96a..f92873d5d12 100644
--- a/samples/openapi3/client/petstore/go/pet_api_test.go
+++ b/samples/openapi3/client/petstore/go/pet_api_test.go
@@ -8,7 +8,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 var client *sw.APIClient
@@ -29,7 +29,7 @@ func TestMain(m *testing.M) {
 func TestAddPet(t *testing.T) {
 	newPet := (sw.Pet{Id: sw.PtrInt64(12830), Name: "gopher",
 		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: sw.PtrString("pending"),
-		Tags: &[]sw.Tag{sw.Tag{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
+		Tags: []sw.Tag{{Id: sw.PtrInt64(1), Name: sw.PtrString("tag2")}}})
 
 	r, err := client.PetApi.AddPet(context.Background()).Pet(newPet).Execute()
 
@@ -59,7 +59,7 @@ func TestGetPetById(t *testing.T) {
 func TestGetPetByIdWithInvalidID(t *testing.T) {
 	resp, r, err := client.PetApi.GetPetById(context.Background(), 999999999).Execute()
 	if r != nil && r.StatusCode == 404 {
-		assertedError, ok := err.(sw.GenericOpenAPIError)
+		assertedError, ok := err.(*sw.GenericOpenAPIError)
 		a := assert.New(t)
 		a.True(ok)
 		a.Contains(string(assertedError.Body()), "type")
diff --git a/samples/openapi3/client/petstore/go/store_api_test.go b/samples/openapi3/client/petstore/go/store_api_test.go
index fc0cdec9699..b3e21e86850 100644
--- a/samples/openapi3/client/petstore/go/store_api_test.go
+++ b/samples/openapi3/client/petstore/go/store_api_test.go
@@ -6,7 +6,7 @@ import (
 	"testing"
 	"time"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 func TestPlaceOrder(t *testing.T) {
diff --git a/samples/openapi3/client/petstore/go/user_api_test.go b/samples/openapi3/client/petstore/go/user_api_test.go
index ef66e2410c0..757ac0fa972 100644
--- a/samples/openapi3/client/petstore/go/user_api_test.go
+++ b/samples/openapi3/client/petstore/go/user_api_test.go
@@ -6,7 +6,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 
-	sw "./go-petstore"
+	sw "go-petstore"
 )
 
 func TestCreateUser(t *testing.T) {
@@ -33,7 +33,7 @@ func TestCreateUser(t *testing.T) {
 //adding x to skip the test, currently it is failing
 func TestCreateUsersWithArrayInput(t *testing.T) {
 	newUsers := []sw.User{
-		sw.User{
+		{
 			Id:         sw.PtrInt64(1001),
 			FirstName:  sw.PtrString("gopher1"),
 			LastName:   sw.PtrString("lang1"),
@@ -43,7 +43,7 @@ func TestCreateUsersWithArrayInput(t *testing.T) {
 			Phone:      sw.PtrString("5101112222"),
 			UserStatus: sw.PtrInt32(1),
 		},
-		sw.User{
+		{
 			Id:         sw.PtrInt64(1002),
 			FirstName:  sw.PtrString("gopher2"),
 			LastName:   sw.PtrString("lang2"),
@@ -63,7 +63,7 @@ func TestCreateUsersWithArrayInput(t *testing.T) {
 		t.Log(apiResponse)
 	}
 
-/* issue deleting users due to issue in the server side (500). commented out below for the time being
+	/* issue deleting users due to issue in the server side (500). commented out below for the time being
 	//tear down
 	_, err1 := client.UserApi.DeleteUser(context.Background(), "gopher1").Execute()
 	if err1 != nil {
@@ -76,7 +76,7 @@ func TestCreateUsersWithArrayInput(t *testing.T) {
 		t.Errorf("Error while deleting user")
 		t.Log(err2)
 	}
-*/
+	*/
 }
 
 func TestGetUserByName(t *testing.T) {
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/ApiClient.java b/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/ApiClient.java
index 66eb9ca7f90..5fb5eda6314 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/ApiClient.java
@@ -981,7 +981,12 @@ public class ApiClient extends JavaTimeFormatter {
       }
     }
 
-    Invocation.Builder invocationBuilder = target.request().accept(accept);
+    Invocation.Builder invocationBuilder;
+    if (accept != null) {
+      invocationBuilder = target.request().accept(accept);
+    } else {
+      invocationBuilder = target.request();
+    }
 
     for (Entry<String, String> entry : cookieParams.entrySet()) {
       String value = entry.getValue();
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index f7ec336d257..01137208e92 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8-special-characters/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/.openapi-generator/FILES b/samples/openapi3/client/petstore/java/jersey2-java8/.openapi-generator/FILES
index e512b5fe7cf..defcfc521a2 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/.openapi-generator/FILES
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/.openapi-generator/FILES
@@ -52,6 +52,8 @@ docs/MapTest.md
 docs/MixedPropertiesAndAdditionalPropertiesClass.md
 docs/Model200Response.md
 docs/ModelApiResponse.md
+docs/ModelFile.md
+docs/ModelList.md
 docs/ModelReturn.md
 docs/Name.md
 docs/NullableClass.md
@@ -164,6 +166,8 @@ src/main/java/org/openapitools/client/model/MapTest.java
 src/main/java/org/openapitools/client/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/client/model/Model200Response.java
 src/main/java/org/openapitools/client/model/ModelApiResponse.java
+src/main/java/org/openapitools/client/model/ModelFile.java
+src/main/java/org/openapitools/client/model/ModelList.java
 src/main/java/org/openapitools/client/model/ModelReturn.java
 src/main/java/org/openapitools/client/model/Name.java
 src/main/java/org/openapitools/client/model/NullableClass.java
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/README.md b/samples/openapi3/client/petstore/java/jersey2-java8/README.md
index 4e49a39330a..433f6979739 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/README.md
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/README.md
@@ -225,6 +225,8 @@ Class | Method | HTTP request | Description
  - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
  - [Model200Response](docs/Model200Response.md)
  - [ModelApiResponse](docs/ModelApiResponse.md)
+ - [ModelFile](docs/ModelFile.md)
+ - [ModelList](docs/ModelList.md)
  - [ModelReturn](docs/ModelReturn.md)
  - [Name](docs/Name.md)
  - [NullableClass](docs/NullableClass.md)
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md b/samples/openapi3/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md
index 2602dc74610..17c97382359 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/docs/FileSchemaTestClass.md
@@ -7,8 +7,8 @@
 
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**file** | [**java.io.File**](java.io.File.md) |  |  [optional]
-**files** | [**List&lt;java.io.File&gt;**](java.io.File.md) |  |  [optional]
+**_file** | [**ModelFile**](ModelFile.md) |  |  [optional]
+**files** | [**List&lt;ModelFile&gt;**](ModelFile.md) |  |  [optional]
 
 
 
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/docs/PetApi.md b/samples/openapi3/client/petstore/java/jersey2-java8/docs/PetApi.md
index 7e3f3f0540c..b45e63a3a77 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/docs/PetApi.md
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/docs/PetApi.md
@@ -514,7 +514,7 @@ null (empty response body)
 
 ## uploadFile
 
-> ModelApiResponse uploadFile(petId, additionalMetadata, file)
+> ModelApiResponse uploadFile(petId, additionalMetadata, _file)
 
 uploads an image
 
@@ -542,9 +542,9 @@ public class Example {
         PetApi apiInstance = new PetApi(defaultClient);
         Long petId = 56L; // Long | ID of pet to update
         String additionalMetadata = "additionalMetadata_example"; // String | Additional data to pass to server
-        File file = new File("/path/to/file"); // File | file to upload
+        File _file = new File("/path/to/file"); // File | file to upload
         try {
-            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, file);
+            ModelApiResponse result = apiInstance.uploadFile(petId, additionalMetadata, _file);
             System.out.println(result);
         } catch (ApiException e) {
             System.err.println("Exception when calling PetApi#uploadFile");
@@ -564,7 +564,7 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **petId** | **Long**| ID of pet to update |
  **additionalMetadata** | **String**| Additional data to pass to server | [optional]
- **file** | **File**| file to upload | [optional]
+ **_file** | **File**| file to upload | [optional]
 
 ### Return type
 
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
index 328fec6af92..5e115bca68a 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
@@ -1190,7 +1190,12 @@ public class ApiClient extends JavaTimeFormatter {
       }
     }
 
-    Invocation.Builder invocationBuilder = target.request().accept(accept);
+    Invocation.Builder invocationBuilder;
+    if (accept != null) {
+      invocationBuilder = target.request().accept(accept);
+    } else {
+      invocationBuilder = target.request();
+    }
 
     for (Entry<String, String> entry : cookieParams.entrySet()) {
       String value = entry.getValue();
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
index 07d7e782b0d..80397abe968 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/RFC3339DateFormat.java
@@ -50,6 +50,6 @@ public class RFC3339DateFormat extends DateFormat {
 
   @Override
   public Object clone() {
-    return this;
+    return super.clone();
   }
 }
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java
index 9f36ab16047..e6ec7cfd993 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/api/PetApi.java
@@ -542,7 +542,7 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ModelApiResponse
    * @throws ApiException if fails to make API call
    * @http.response.details
@@ -551,8 +551,8 @@ if (status != null)
        <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
    */
-  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File file) throws ApiException {
-    return uploadFileWithHttpInfo(petId, additionalMetadata, file).getData();
+  public ModelApiResponse uploadFile(Long petId, String additionalMetadata, File _file) throws ApiException {
+    return uploadFileWithHttpInfo(petId, additionalMetadata, _file).getData();
   }
 
   /**
@@ -560,7 +560,7 @@ if (status != null)
    * 
    * @param petId ID of pet to update (required)
    * @param additionalMetadata Additional data to pass to server (optional)
-   * @param file file to upload (optional)
+   * @param _file file to upload (optional)
    * @return ApiResponse&lt;ModelApiResponse&gt;
    * @throws ApiException if fails to make API call
    * @http.response.details
@@ -569,7 +569,7 @@ if (status != null)
        <tr><td> 200 </td><td> successful operation </td><td>  -  </td></tr>
      </table>
    */
-  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File file) throws ApiException {
+  public ApiResponse<ModelApiResponse> uploadFileWithHttpInfo(Long petId, String additionalMetadata, File _file) throws ApiException {
     Object localVarPostBody = null;
     
     // verify the required parameter 'petId' is set
@@ -592,8 +592,8 @@ if (status != null)
     
     if (additionalMetadata != null)
       localVarFormParams.put("additionalMetadata", additionalMetadata);
-if (file != null)
-      localVarFormParams.put("file", file);
+if (_file != null)
+      localVarFormParams.put("file", _file);
 
     final String[] localVarAccepts = {
       "application/json"
diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
index 575eaed95b2..837c15933e3 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/FileSchemaTestClass.java
@@ -26,6 +26,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.client.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.openapitools.client.JSON;
 
@@ -40,46 +41,46 @@ import org.openapitools.client.JSON;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
 public class FileSchemaTestClass {
   public static final String JSON_PROPERTY_FILE = "file";
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
   public FileSchemaTestClass() { 
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @javax.annotation.Nullable
   @ApiModelProperty(value = "")
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILE)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -96,14 +97,14 @@ public class FileSchemaTestClass {
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
 
   @JsonProperty(JSON_PROPERTY_FILES)
   @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -120,20 +121,20 @@ public class FileSchemaTestClass {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/python-experimental/.gitignore b/samples/openapi3/client/petstore/python-experimental/.gitignore
new file mode 100644
index 00000000000..a62e8aba43f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/.gitignore
@@ -0,0 +1,67 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+dev-requirements.txt.log
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+venv/
+.venv/
+.python-version
+.pytest_cache
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+#Ipython Notebook
+.ipynb_checkpoints
diff --git a/samples/openapi3/client/petstore/python-experimental/.gitlab-ci.yml b/samples/openapi3/client/petstore/python-experimental/.gitlab-ci.yml
new file mode 100644
index 00000000000..611e425676e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/.gitlab-ci.yml
@@ -0,0 +1,24 @@
+# ref: https://docs.gitlab.com/ee/ci/README.html
+
+stages:
+  - test
+
+.tests:
+  stage: test
+  script:
+   - pip install -r requirements.txt
+   - pip install -r test-requirements.txt
+   - pytest --cov=petstore_api
+
+test-3.5:
+  extends: .tests
+  image: python:3.5-alpine
+test-3.6:
+  extends: .tests
+  image: python:3.6-alpine
+test-3.7:
+  extends: .tests
+  image: python:3.7-alpine
+test-3.8:
+  extends: .tests
+  image: python:3.8-alpine
diff --git a/samples/openapi3/client/petstore/python-experimental/.openapi-generator-ignore b/samples/openapi3/client/petstore/python-experimental/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/openapi3/client/petstore/python-experimental/.openapi-generator/FILES b/samples/openapi3/client/petstore/python-experimental/.openapi-generator/FILES
new file mode 100644
index 00000000000..fdc3984d899
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/.openapi-generator/FILES
@@ -0,0 +1,270 @@
+.gitignore
+.gitlab-ci.yml
+.travis.yml
+README.md
+docs/AdditionalPropertiesClass.md
+docs/AdditionalPropertiesWithArrayOfEnums.md
+docs/Address.md
+docs/Animal.md
+docs/AnimalFarm.md
+docs/AnotherFakeApi.md
+docs/ApiResponse.md
+docs/Apple.md
+docs/AppleReq.md
+docs/ArrayHoldingAnyType.md
+docs/ArrayOfArrayOfNumberOnly.md
+docs/ArrayOfEnums.md
+docs/ArrayOfNumberOnly.md
+docs/ArrayTest.md
+docs/ArrayWithValidationsInItems.md
+docs/Banana.md
+docs/BananaReq.md
+docs/Bar.md
+docs/BasquePig.md
+docs/Boolean.md
+docs/BooleanEnum.md
+docs/Capitalization.md
+docs/Cat.md
+docs/CatAllOf.md
+docs/Category.md
+docs/ChildCat.md
+docs/ChildCatAllOf.md
+docs/ClassModel.md
+docs/Client.md
+docs/ComplexQuadrilateral.md
+docs/ComplexQuadrilateralAllOf.md
+docs/ComposedAnyOfDifferentTypesNoValidations.md
+docs/ComposedArray.md
+docs/ComposedBool.md
+docs/ComposedNone.md
+docs/ComposedNumber.md
+docs/ComposedObject.md
+docs/ComposedOneOfDifferentTypes.md
+docs/ComposedString.md
+docs/Currency.md
+docs/DanishPig.md
+docs/DateTimeTest.md
+docs/DateTimeWithValidations.md
+docs/DateWithValidations.md
+docs/DecimalPayload.md
+docs/DefaultApi.md
+docs/Dog.md
+docs/DogAllOf.md
+docs/Drawing.md
+docs/EnumArrays.md
+docs/EnumClass.md
+docs/EnumTest.md
+docs/EquilateralTriangle.md
+docs/EquilateralTriangleAllOf.md
+docs/FakeApi.md
+docs/FakeClassnameTags123Api.md
+docs/File.md
+docs/FileSchemaTestClass.md
+docs/Foo.md
+docs/FormatTest.md
+docs/Fruit.md
+docs/FruitReq.md
+docs/GmFruit.md
+docs/GrandparentAnimal.md
+docs/HasOnlyReadOnly.md
+docs/HealthCheckResult.md
+docs/InlineResponseDefault.md
+docs/IntegerEnum.md
+docs/IntegerEnumBig.md
+docs/IntegerEnumOneValue.md
+docs/IntegerEnumWithDefaultValue.md
+docs/IntegerMax10.md
+docs/IntegerMin15.md
+docs/IsoscelesTriangle.md
+docs/IsoscelesTriangleAllOf.md
+docs/Mammal.md
+docs/MapTest.md
+docs/MixedPropertiesAndAdditionalPropertiesClass.md
+docs/Model200Response.md
+docs/ModelReturn.md
+docs/Money.md
+docs/Name.md
+docs/NoAdditionalProperties.md
+docs/NullableClass.md
+docs/NullableShape.md
+docs/NullableString.md
+docs/Number.md
+docs/NumberOnly.md
+docs/NumberWithValidations.md
+docs/ObjectInterface.md
+docs/ObjectModelWithRefProps.md
+docs/ObjectWithDecimalProperties.md
+docs/ObjectWithDifficultlyNamedProps.md
+docs/ObjectWithValidations.md
+docs/Order.md
+docs/ParentPet.md
+docs/Pet.md
+docs/PetApi.md
+docs/Pig.md
+docs/Player.md
+docs/Quadrilateral.md
+docs/QuadrilateralInterface.md
+docs/ReadOnlyFirst.md
+docs/ScaleneTriangle.md
+docs/ScaleneTriangleAllOf.md
+docs/Shape.md
+docs/ShapeOrNull.md
+docs/SimpleQuadrilateral.md
+docs/SimpleQuadrilateralAllOf.md
+docs/SomeObject.md
+docs/SpecialModelName.md
+docs/StoreApi.md
+docs/String.md
+docs/StringBooleanMap.md
+docs/StringEnum.md
+docs/StringEnumWithDefaultValue.md
+docs/StringWithValidation.md
+docs/Tag.md
+docs/Triangle.md
+docs/TriangleInterface.md
+docs/User.md
+docs/UserApi.md
+docs/Whale.md
+docs/Zebra.md
+git_push.sh
+petstore_api/__init__.py
+petstore_api/api/__init__.py
+petstore_api/api/another_fake_api.py
+petstore_api/api/default_api.py
+petstore_api/api/fake_api.py
+petstore_api/api/fake_classname_tags_123_api.py
+petstore_api/api/pet_api.py
+petstore_api/api/store_api.py
+petstore_api/api/user_api.py
+petstore_api/api_client.py
+petstore_api/apis/__init__.py
+petstore_api/configuration.py
+petstore_api/exceptions.py
+petstore_api/model/__init__.py
+petstore_api/model/additional_properties_class.py
+petstore_api/model/additional_properties_with_array_of_enums.py
+petstore_api/model/address.py
+petstore_api/model/animal.py
+petstore_api/model/animal_farm.py
+petstore_api/model/api_response.py
+petstore_api/model/apple.py
+petstore_api/model/apple_req.py
+petstore_api/model/array_holding_any_type.py
+petstore_api/model/array_of_array_of_number_only.py
+petstore_api/model/array_of_enums.py
+petstore_api/model/array_of_number_only.py
+petstore_api/model/array_test.py
+petstore_api/model/array_with_validations_in_items.py
+petstore_api/model/banana.py
+petstore_api/model/banana_req.py
+petstore_api/model/bar.py
+petstore_api/model/basque_pig.py
+petstore_api/model/boolean.py
+petstore_api/model/boolean_enum.py
+petstore_api/model/capitalization.py
+petstore_api/model/cat.py
+petstore_api/model/cat_all_of.py
+petstore_api/model/category.py
+petstore_api/model/child_cat.py
+petstore_api/model/child_cat_all_of.py
+petstore_api/model/class_model.py
+petstore_api/model/client.py
+petstore_api/model/complex_quadrilateral.py
+petstore_api/model/complex_quadrilateral_all_of.py
+petstore_api/model/composed_any_of_different_types_no_validations.py
+petstore_api/model/composed_array.py
+petstore_api/model/composed_bool.py
+petstore_api/model/composed_none.py
+petstore_api/model/composed_number.py
+petstore_api/model/composed_object.py
+petstore_api/model/composed_one_of_different_types.py
+petstore_api/model/composed_string.py
+petstore_api/model/currency.py
+petstore_api/model/danish_pig.py
+petstore_api/model/date_time_test.py
+petstore_api/model/date_time_with_validations.py
+petstore_api/model/date_with_validations.py
+petstore_api/model/decimal_payload.py
+petstore_api/model/dog.py
+petstore_api/model/dog_all_of.py
+petstore_api/model/drawing.py
+petstore_api/model/enum_arrays.py
+petstore_api/model/enum_class.py
+petstore_api/model/enum_test.py
+petstore_api/model/equilateral_triangle.py
+petstore_api/model/equilateral_triangle_all_of.py
+petstore_api/model/file.py
+petstore_api/model/file_schema_test_class.py
+petstore_api/model/foo.py
+petstore_api/model/format_test.py
+petstore_api/model/fruit.py
+petstore_api/model/fruit_req.py
+petstore_api/model/gm_fruit.py
+petstore_api/model/grandparent_animal.py
+petstore_api/model/has_only_read_only.py
+petstore_api/model/health_check_result.py
+petstore_api/model/inline_response_default.py
+petstore_api/model/integer_enum.py
+petstore_api/model/integer_enum_big.py
+petstore_api/model/integer_enum_one_value.py
+petstore_api/model/integer_enum_with_default_value.py
+petstore_api/model/integer_max10.py
+petstore_api/model/integer_min15.py
+petstore_api/model/isosceles_triangle.py
+petstore_api/model/isosceles_triangle_all_of.py
+petstore_api/model/mammal.py
+petstore_api/model/map_test.py
+petstore_api/model/mixed_properties_and_additional_properties_class.py
+petstore_api/model/model200_response.py
+petstore_api/model/model_return.py
+petstore_api/model/money.py
+petstore_api/model/name.py
+petstore_api/model/no_additional_properties.py
+petstore_api/model/nullable_class.py
+petstore_api/model/nullable_shape.py
+petstore_api/model/nullable_string.py
+petstore_api/model/number.py
+petstore_api/model/number_only.py
+petstore_api/model/number_with_validations.py
+petstore_api/model/object_interface.py
+petstore_api/model/object_model_with_ref_props.py
+petstore_api/model/object_with_decimal_properties.py
+petstore_api/model/object_with_difficultly_named_props.py
+petstore_api/model/object_with_validations.py
+petstore_api/model/order.py
+petstore_api/model/parent_pet.py
+petstore_api/model/pet.py
+petstore_api/model/pig.py
+petstore_api/model/player.py
+petstore_api/model/quadrilateral.py
+petstore_api/model/quadrilateral_interface.py
+petstore_api/model/read_only_first.py
+petstore_api/model/scalene_triangle.py
+petstore_api/model/scalene_triangle_all_of.py
+petstore_api/model/shape.py
+petstore_api/model/shape_or_null.py
+petstore_api/model/simple_quadrilateral.py
+petstore_api/model/simple_quadrilateral_all_of.py
+petstore_api/model/some_object.py
+petstore_api/model/special_model_name.py
+petstore_api/model/string.py
+petstore_api/model/string_boolean_map.py
+petstore_api/model/string_enum.py
+petstore_api/model/string_enum_with_default_value.py
+petstore_api/model/string_with_validation.py
+petstore_api/model/tag.py
+petstore_api/model/triangle.py
+petstore_api/model/triangle_interface.py
+petstore_api/model/user.py
+petstore_api/model/whale.py
+petstore_api/model/zebra.py
+petstore_api/models/__init__.py
+petstore_api/rest.py
+petstore_api/schemas.py
+petstore_api/signing.py
+requirements.txt
+setup.cfg
+setup.py
+test-requirements.txt
+test/__init__.py
+tox.ini
diff --git a/samples/openapi3/client/petstore/python-experimental/.openapi-generator/VERSION b/samples/openapi3/client/petstore/python-experimental/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/python-experimental/.travis.yml b/samples/openapi3/client/petstore/python-experimental/.travis.yml
new file mode 100644
index 00000000000..f931f0f74b9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/.travis.yml
@@ -0,0 +1,13 @@
+# ref: https://docs.travis-ci.com/user/languages/python
+language: python
+python:
+  - "3.5"
+  - "3.6"
+  - "3.7"
+  - "3.8"
+# command to install dependencies
+install:
+  - "pip install -r requirements.txt"
+  - "pip install -r test-requirements.txt"
+# command to run tests
+script: pytest --cov=petstore_api
diff --git a/samples/openapi3/client/petstore/python-experimental/Makefile b/samples/openapi3/client/petstore/python-experimental/Makefile
new file mode 100644
index 00000000000..863c380ebef
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/Makefile
@@ -0,0 +1,16 @@
+REQUIREMENTS_FILE=dev-requirements.txt
+REQUIREMENTS_OUT=dev-requirements.txt.log
+SETUP_OUT=*.egg-info
+VENV=venv
+
+clean:
+	rm -rf $(REQUIREMENTS_OUT)
+	rm -rf $(SETUP_OUT)
+	rm -rf $(VENV)
+	rm -rf .tox
+	rm -rf .coverage
+	find . -name "*.py[oc]" -delete
+	find . -name "__pycache__" -delete
+
+test: clean
+	bash ./test_python.sh
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/python-experimental/README.md b/samples/openapi3/client/petstore/python-experimental/README.md
new file mode 100644
index 00000000000..a849a36ae20
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/README.md
@@ -0,0 +1,324 @@
+# petstore-api
+This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+
+This Python package is automatically generated by the [OpenAPI Generator](https://openapi-generator.tech) project:
+
+- API version: 1.0.0
+- Package version: 1.0.0
+- Build package: org.openapitools.codegen.languages.PythonExperimentalClientCodegen
+
+## Requirements.
+
+Python &gt;&#x3D;3.9
+v3.9 is needed so one can combine classmethod and property decorators to define
+object schema properties as classes
+
+## Installation & Usage
+### pip install
+
+If the python package is hosted on a repository, you can install directly using:
+
+```sh
+pip install git+https://github.com/GIT_USER_ID/GIT_REPO_ID.git
+```
+(you may need to run `pip` with root permission: `sudo pip install git+https://github.com/GIT_USER_ID/GIT_REPO_ID.git`)
+
+Then import the package:
+```python
+import petstore_api
+```
+
+### Setuptools
+
+Install via [Setuptools](http://pypi.python.org/pypi/setuptools).
+
+```sh
+python setup.py install --user
+```
+(or `sudo python setup.py install` to install the package for all users)
+
+Then import the package:
+```python
+import petstore_api
+```
+
+## Getting Started
+
+Please follow the [installation procedure](#installation--usage) and then run the following:
+
+```python
+import datetimeimport datetimeimport datetimeimport datetimeimport datetimeimport datetimeimport datetime
+import time
+import petstore_api
+from pprint import pprint
+from petstore_api.api import another_fake_api
+from petstore_api.model.client import Client
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = another_fake_api.AnotherFakeApi(api_client)
+    client = Client(
+        client="client_example",
+    ) # Client | client model
+
+    try:
+        # To test special tags
+        api_response = api_instance.call_123_test_special_tags(client)
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling AnotherFakeApi->call_123_test_special_tags: %s\n" % e)
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*AnotherFakeApi* | [**call_123_test_special_tags**](docs/AnotherFakeApi.md#call_123_test_special_tags) | **PATCH** /another-fake/dummy | To test special tags
+*DefaultApi* | [**foo_get**](docs/DefaultApi.md#foo_get) | **GET** /foo | 
+*FakeApi* | [**additional_properties_with_array_of_enums**](docs/FakeApi.md#additional_properties_with_array_of_enums) | **GET** /fake/additional-properties-with-array-of-enums | Additional Properties with Array of Enums
+*FakeApi* | [**array_model**](docs/FakeApi.md#array_model) | **POST** /fake/refs/arraymodel | 
+*FakeApi* | [**array_of_enums**](docs/FakeApi.md#array_of_enums) | **POST** /fake/refs/array-of-enums | Array of Enums
+*FakeApi* | [**body_with_file_schema**](docs/FakeApi.md#body_with_file_schema) | **PUT** /fake/body-with-file-schema | 
+*FakeApi* | [**body_with_query_params**](docs/FakeApi.md#body_with_query_params) | **PUT** /fake/body-with-query-params | 
+*FakeApi* | [**boolean**](docs/FakeApi.md#boolean) | **POST** /fake/refs/boolean | 
+*FakeApi* | [**case_sensitive_params**](docs/FakeApi.md#case_sensitive_params) | **PUT** /fake/case-sensitive-params | 
+*FakeApi* | [**client_model**](docs/FakeApi.md#client_model) | **PATCH** /fake | To test \&quot;client\&quot; model
+*FakeApi* | [**composed_one_of_different_types**](docs/FakeApi.md#composed_one_of_different_types) | **POST** /fake/refs/composed_one_of_number_with_validations | 
+*FakeApi* | [**endpoint_parameters**](docs/FakeApi.md#endpoint_parameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+*FakeApi* | [**enum_parameters**](docs/FakeApi.md#enum_parameters) | **GET** /fake | To test enum parameters
+*FakeApi* | [**fake_health_get**](docs/FakeApi.md#fake_health_get) | **GET** /fake/health | Health check endpoint
+*FakeApi* | [**group_parameters**](docs/FakeApi.md#group_parameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
+*FakeApi* | [**inline_additional_properties**](docs/FakeApi.md#inline_additional_properties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
+*FakeApi* | [**json_form_data**](docs/FakeApi.md#json_form_data) | **GET** /fake/jsonFormData | test json serialization of form data
+*FakeApi* | [**mammal**](docs/FakeApi.md#mammal) | **POST** /fake/refs/mammal | 
+*FakeApi* | [**number_with_validations**](docs/FakeApi.md#number_with_validations) | **POST** /fake/refs/number | 
+*FakeApi* | [**object_model_with_ref_props**](docs/FakeApi.md#object_model_with_ref_props) | **POST** /fake/refs/object_model_with_ref_props | 
+*FakeApi* | [**parameter_collisions**](docs/FakeApi.md#parameter_collisions) | **POST** /fake/parameterCollisions/{1}/{aB}/{Ab}/{self}/{A-B}/ | parameter collision case
+*FakeApi* | [**query_parameter_collection_format**](docs/FakeApi.md#query_parameter_collection_format) | **PUT** /fake/test-query-paramters | 
+*FakeApi* | [**string**](docs/FakeApi.md#string) | **POST** /fake/refs/string | 
+*FakeApi* | [**string_enum**](docs/FakeApi.md#string_enum) | **POST** /fake/refs/enum | 
+*FakeApi* | [**upload_download_file**](docs/FakeApi.md#upload_download_file) | **POST** /fake/uploadDownloadFile | uploads a file and downloads a file using application/octet-stream
+*FakeApi* | [**upload_file**](docs/FakeApi.md#upload_file) | **POST** /fake/uploadFile | uploads a file using multipart/form-data
+*FakeApi* | [**upload_files**](docs/FakeApi.md#upload_files) | **POST** /fake/uploadFiles | uploads files using multipart/form-data
+*FakeClassnameTags123Api* | [**classname**](docs/FakeClassnameTags123Api.md#classname) | **PATCH** /fake_classname_test | To test class name in snake case
+*PetApi* | [**add_pet**](docs/PetApi.md#add_pet) | **POST** /pet | Add a new pet to the store
+*PetApi* | [**delete_pet**](docs/PetApi.md#delete_pet) | **DELETE** /pet/{petId} | Deletes a pet
+*PetApi* | [**find_pets_by_status**](docs/PetApi.md#find_pets_by_status) | **GET** /pet/findByStatus | Finds Pets by status
+*PetApi* | [**find_pets_by_tags**](docs/PetApi.md#find_pets_by_tags) | **GET** /pet/findByTags | Finds Pets by tags
+*PetApi* | [**get_pet_by_id**](docs/PetApi.md#get_pet_by_id) | **GET** /pet/{petId} | Find pet by ID
+*PetApi* | [**update_pet**](docs/PetApi.md#update_pet) | **PUT** /pet | Update an existing pet
+*PetApi* | [**update_pet_with_form**](docs/PetApi.md#update_pet_with_form) | **POST** /pet/{petId} | Updates a pet in the store with form data
+*PetApi* | [**upload_file_with_required_file**](docs/PetApi.md#upload_file_with_required_file) | **POST** /fake/{petId}/uploadImageWithRequiredFile | uploads an image (required)
+*PetApi* | [**upload_image**](docs/PetApi.md#upload_image) | **POST** /pet/{petId}/uploadImage | uploads an image
+*StoreApi* | [**delete_order**](docs/StoreApi.md#delete_order) | **DELETE** /store/order/{order_id} | Delete purchase order by ID
+*StoreApi* | [**get_inventory**](docs/StoreApi.md#get_inventory) | **GET** /store/inventory | Returns pet inventories by status
+*StoreApi* | [**get_order_by_id**](docs/StoreApi.md#get_order_by_id) | **GET** /store/order/{order_id} | Find purchase order by ID
+*StoreApi* | [**place_order**](docs/StoreApi.md#place_order) | **POST** /store/order | Place an order for a pet
+*UserApi* | [**create_user**](docs/UserApi.md#create_user) | **POST** /user | Create user
+*UserApi* | [**create_users_with_array_input**](docs/UserApi.md#create_users_with_array_input) | **POST** /user/createWithArray | Creates list of users with given input array
+*UserApi* | [**create_users_with_list_input**](docs/UserApi.md#create_users_with_list_input) | **POST** /user/createWithList | Creates list of users with given input array
+*UserApi* | [**delete_user**](docs/UserApi.md#delete_user) | **DELETE** /user/{username} | Delete user
+*UserApi* | [**get_user_by_name**](docs/UserApi.md#get_user_by_name) | **GET** /user/{username} | Get user by user name
+*UserApi* | [**login_user**](docs/UserApi.md#login_user) | **GET** /user/login | Logs user into the system
+*UserApi* | [**logout_user**](docs/UserApi.md#logout_user) | **GET** /user/logout | Logs out current logged in user session
+*UserApi* | [**update_user**](docs/UserApi.md#update_user) | **PUT** /user/{username} | Updated user
+
+## Documentation For Models
+
+ - [AdditionalPropertiesClass](docs/AdditionalPropertiesClass.md)
+ - [AdditionalPropertiesWithArrayOfEnums](docs/AdditionalPropertiesWithArrayOfEnums.md)
+ - [Address](docs/Address.md)
+ - [Animal](docs/Animal.md)
+ - [AnimalFarm](docs/AnimalFarm.md)
+ - [ApiResponse](docs/ApiResponse.md)
+ - [Apple](docs/Apple.md)
+ - [AppleReq](docs/AppleReq.md)
+ - [ArrayHoldingAnyType](docs/ArrayHoldingAnyType.md)
+ - [ArrayOfArrayOfNumberOnly](docs/ArrayOfArrayOfNumberOnly.md)
+ - [ArrayOfEnums](docs/ArrayOfEnums.md)
+ - [ArrayOfNumberOnly](docs/ArrayOfNumberOnly.md)
+ - [ArrayTest](docs/ArrayTest.md)
+ - [ArrayWithValidationsInItems](docs/ArrayWithValidationsInItems.md)
+ - [Banana](docs/Banana.md)
+ - [BananaReq](docs/BananaReq.md)
+ - [Bar](docs/Bar.md)
+ - [BasquePig](docs/BasquePig.md)
+ - [Boolean](docs/Boolean.md)
+ - [BooleanEnum](docs/BooleanEnum.md)
+ - [Capitalization](docs/Capitalization.md)
+ - [Cat](docs/Cat.md)
+ - [CatAllOf](docs/CatAllOf.md)
+ - [Category](docs/Category.md)
+ - [ChildCat](docs/ChildCat.md)
+ - [ChildCatAllOf](docs/ChildCatAllOf.md)
+ - [ClassModel](docs/ClassModel.md)
+ - [Client](docs/Client.md)
+ - [ComplexQuadrilateral](docs/ComplexQuadrilateral.md)
+ - [ComplexQuadrilateralAllOf](docs/ComplexQuadrilateralAllOf.md)
+ - [ComposedAnyOfDifferentTypesNoValidations](docs/ComposedAnyOfDifferentTypesNoValidations.md)
+ - [ComposedArray](docs/ComposedArray.md)
+ - [ComposedBool](docs/ComposedBool.md)
+ - [ComposedNone](docs/ComposedNone.md)
+ - [ComposedNumber](docs/ComposedNumber.md)
+ - [ComposedObject](docs/ComposedObject.md)
+ - [ComposedOneOfDifferentTypes](docs/ComposedOneOfDifferentTypes.md)
+ - [ComposedString](docs/ComposedString.md)
+ - [Currency](docs/Currency.md)
+ - [DanishPig](docs/DanishPig.md)
+ - [DateTimeTest](docs/DateTimeTest.md)
+ - [DateTimeWithValidations](docs/DateTimeWithValidations.md)
+ - [DateWithValidations](docs/DateWithValidations.md)
+ - [DecimalPayload](docs/DecimalPayload.md)
+ - [Dog](docs/Dog.md)
+ - [DogAllOf](docs/DogAllOf.md)
+ - [Drawing](docs/Drawing.md)
+ - [EnumArrays](docs/EnumArrays.md)
+ - [EnumClass](docs/EnumClass.md)
+ - [EnumTest](docs/EnumTest.md)
+ - [EquilateralTriangle](docs/EquilateralTriangle.md)
+ - [EquilateralTriangleAllOf](docs/EquilateralTriangleAllOf.md)
+ - [File](docs/File.md)
+ - [FileSchemaTestClass](docs/FileSchemaTestClass.md)
+ - [Foo](docs/Foo.md)
+ - [FormatTest](docs/FormatTest.md)
+ - [Fruit](docs/Fruit.md)
+ - [FruitReq](docs/FruitReq.md)
+ - [GmFruit](docs/GmFruit.md)
+ - [GrandparentAnimal](docs/GrandparentAnimal.md)
+ - [HasOnlyReadOnly](docs/HasOnlyReadOnly.md)
+ - [HealthCheckResult](docs/HealthCheckResult.md)
+ - [InlineResponseDefault](docs/InlineResponseDefault.md)
+ - [IntegerEnum](docs/IntegerEnum.md)
+ - [IntegerEnumBig](docs/IntegerEnumBig.md)
+ - [IntegerEnumOneValue](docs/IntegerEnumOneValue.md)
+ - [IntegerEnumWithDefaultValue](docs/IntegerEnumWithDefaultValue.md)
+ - [IntegerMax10](docs/IntegerMax10.md)
+ - [IntegerMin15](docs/IntegerMin15.md)
+ - [IsoscelesTriangle](docs/IsoscelesTriangle.md)
+ - [IsoscelesTriangleAllOf](docs/IsoscelesTriangleAllOf.md)
+ - [Mammal](docs/Mammal.md)
+ - [MapTest](docs/MapTest.md)
+ - [MixedPropertiesAndAdditionalPropertiesClass](docs/MixedPropertiesAndAdditionalPropertiesClass.md)
+ - [Model200Response](docs/Model200Response.md)
+ - [ModelReturn](docs/ModelReturn.md)
+ - [Money](docs/Money.md)
+ - [Name](docs/Name.md)
+ - [NoAdditionalProperties](docs/NoAdditionalProperties.md)
+ - [NullableClass](docs/NullableClass.md)
+ - [NullableShape](docs/NullableShape.md)
+ - [NullableString](docs/NullableString.md)
+ - [Number](docs/Number.md)
+ - [NumberOnly](docs/NumberOnly.md)
+ - [NumberWithValidations](docs/NumberWithValidations.md)
+ - [ObjectInterface](docs/ObjectInterface.md)
+ - [ObjectModelWithRefProps](docs/ObjectModelWithRefProps.md)
+ - [ObjectWithDecimalProperties](docs/ObjectWithDecimalProperties.md)
+ - [ObjectWithDifficultlyNamedProps](docs/ObjectWithDifficultlyNamedProps.md)
+ - [ObjectWithValidations](docs/ObjectWithValidations.md)
+ - [Order](docs/Order.md)
+ - [ParentPet](docs/ParentPet.md)
+ - [Pet](docs/Pet.md)
+ - [Pig](docs/Pig.md)
+ - [Player](docs/Player.md)
+ - [Quadrilateral](docs/Quadrilateral.md)
+ - [QuadrilateralInterface](docs/QuadrilateralInterface.md)
+ - [ReadOnlyFirst](docs/ReadOnlyFirst.md)
+ - [ScaleneTriangle](docs/ScaleneTriangle.md)
+ - [ScaleneTriangleAllOf](docs/ScaleneTriangleAllOf.md)
+ - [Shape](docs/Shape.md)
+ - [ShapeOrNull](docs/ShapeOrNull.md)
+ - [SimpleQuadrilateral](docs/SimpleQuadrilateral.md)
+ - [SimpleQuadrilateralAllOf](docs/SimpleQuadrilateralAllOf.md)
+ - [SomeObject](docs/SomeObject.md)
+ - [SpecialModelName](docs/SpecialModelName.md)
+ - [String](docs/String.md)
+ - [StringBooleanMap](docs/StringBooleanMap.md)
+ - [StringEnum](docs/StringEnum.md)
+ - [StringEnumWithDefaultValue](docs/StringEnumWithDefaultValue.md)
+ - [StringWithValidation](docs/StringWithValidation.md)
+ - [Tag](docs/Tag.md)
+ - [Triangle](docs/Triangle.md)
+ - [TriangleInterface](docs/TriangleInterface.md)
+ - [User](docs/User.md)
+ - [Whale](docs/Whale.md)
+ - [Zebra](docs/Zebra.md)
+
+## Documentation For Authorization
+
+
+## api_key
+
+- **Type**: API key
+- **API key parameter name**: api_key
+- **Location**: HTTP header
+
+
+## api_key_query
+
+- **Type**: API key
+- **API key parameter name**: api_key_query
+- **Location**: URL query string
+
+
+## bearer_test
+
+- **Type**: Bearer authentication (JWT)
+
+
+## http_basic_test
+
+- **Type**: HTTP basic authentication
+
+
+## http_signature_test
+
+- **Type**: HTTP signature authentication
+
+ Authentication schemes defined for the API:
+## petstore_auth
+
+- **Type**: OAuth
+- **Flow**: implicit
+- **Authorization URL**: http://petstore.swagger.io/api/oauth/dialog
+- **Scopes**: 
+ - **write:pets**: modify pets in your account
+ - **read:pets**: read your pets
+
+
+## Author
+
+
+
+
+
+
+
+
+
+## Notes for Large OpenAPI documents
+If the OpenAPI document is large, imports in petstore_api.apis and petstore_api.models may fail with a
+RecursionError indicating the maximum recursion limit has been exceeded. In that case, there are a couple of solutions:
+
+Solution 1:
+Use specific imports for apis and models like:
+- `from petstore_api.api.default_api import DefaultApi`
+- `from petstore_api.model.pet import Pet`
+
+Solution 1:
+Before importing the package, adjust the maximum recursion limit as shown below:
+```
+import sys
+sys.setrecursionlimit(1500)
+import petstore_api
+from petstore_api.apis import *
+from petstore_api.models import *
+```
diff --git a/samples/openapi3/client/petstore/python-experimental/dev-requirements.txt b/samples/openapi3/client/petstore/python-experimental/dev-requirements.txt
new file mode 100644
index 00000000000..ccdfca62949
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/dev-requirements.txt
@@ -0,0 +1,2 @@
+tox
+flake8
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/AdditionalPropertiesClass.md b/samples/openapi3/client/petstore/python-experimental/docs/AdditionalPropertiesClass.md
new file mode 100644
index 00000000000..cf88f5b25d9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/AdditionalPropertiesClass.md
@@ -0,0 +1,17 @@
+# AdditionalPropertiesClass
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**map_property** | **{str: (str,)}** |  | [optional] 
+**map_of_map_property** | **{str: ({str: (str,)},)}** |  | [optional] 
+**anytype_1** | **bool, date, datetime, dict, float, int, list, str, none_type** |  | [optional] 
+**map_with_undeclared_properties_anytype_1** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}** |  | [optional] 
+**map_with_undeclared_properties_anytype_2** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}** |  | [optional] 
+**map_with_undeclared_properties_anytype_3** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}** |  | [optional] 
+**empty_map** | **bool, date, datetime, dict, float, int, list, str** | an object with no declared properties and no undeclared properties, hence it&#x27;s an empty map. | [optional] 
+**map_with_undeclared_properties_string** | **{str: (str,)}** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/AdditionalPropertiesWithArrayOfEnums.md b/samples/openapi3/client/petstore/python-experimental/docs/AdditionalPropertiesWithArrayOfEnums.md
new file mode 100644
index 00000000000..81d4ee55401
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/AdditionalPropertiesWithArrayOfEnums.md
@@ -0,0 +1,9 @@
+# AdditionalPropertiesWithArrayOfEnums
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **[EnumClass]** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Address.md b/samples/openapi3/client/petstore/python-experimental/docs/Address.md
new file mode 100644
index 00000000000..a6060817c8c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Address.md
@@ -0,0 +1,9 @@
+# Address
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **int** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Animal.md b/samples/openapi3/client/petstore/python-experimental/docs/Animal.md
new file mode 100644
index 00000000000..8d43981dc82
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Animal.md
@@ -0,0 +1,11 @@
+# Animal
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**className** | **str** |  | 
+**color** | **str** |  | [optional]  if omitted the server will use the default value of "red"
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/AnimalFarm.md b/samples/openapi3/client/petstore/python-experimental/docs/AnimalFarm.md
new file mode 100644
index 00000000000..04db36a075c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/AnimalFarm.md
@@ -0,0 +1,8 @@
+# AnimalFarm
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[Animal]** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/AnotherFakeApi.md b/samples/openapi3/client/petstore/python-experimental/docs/AnotherFakeApi.md
new file mode 100644
index 00000000000..6ec2e771f86
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/AnotherFakeApi.md
@@ -0,0 +1,94 @@
+# petstore_api.AnotherFakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**call_123_test_special_tags**](AnotherFakeApi.md#call_123_test_special_tags) | **PATCH** /another-fake/dummy | To test special tags
+
+# **call_123_test_special_tags**
+> Client call_123_test_special_tags(client)
+
+To test special tags
+
+To test special tags and operation ID starting with number
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import another_fake_api
+from petstore_api.model.client import Client
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = another_fake_api.AnotherFakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Client(
+        client="client_example",
+    )
+    try:
+        # To test special tags
+        api_response = api_instance.call_123_test_special_tags(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling AnotherFakeApi->call_123_test_special_tags: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Client**](Client.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Client**](Client.md) |  | 
+
+
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ApiResponse.md b/samples/openapi3/client/petstore/python-experimental/docs/ApiResponse.md
new file mode 100644
index 00000000000..6206bcbe611
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ApiResponse.md
@@ -0,0 +1,12 @@
+# ApiResponse
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**code** | **int** |  | [optional] 
+**type** | **str** |  | [optional] 
+**message** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Apple.md b/samples/openapi3/client/petstore/python-experimental/docs/Apple.md
new file mode 100644
index 00000000000..93f59b3a2e1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Apple.md
@@ -0,0 +1,11 @@
+# Apple
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**cultivar** | **str** |  | 
+**origin** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/AppleReq.md b/samples/openapi3/client/petstore/python-experimental/docs/AppleReq.md
new file mode 100644
index 00000000000..1dde25261bc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/AppleReq.md
@@ -0,0 +1,10 @@
+# AppleReq
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**cultivar** | **str** |  | 
+**mealy** | **bool** |  | [optional] 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ArrayHoldingAnyType.md b/samples/openapi3/client/petstore/python-experimental/docs/ArrayHoldingAnyType.md
new file mode 100644
index 00000000000..db0bfa793a6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ArrayHoldingAnyType.md
@@ -0,0 +1,8 @@
+# ArrayHoldingAnyType
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[bool, date, datetime, dict, float, int, list, str, none_type]** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfArrayOfNumberOnly.md b/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfArrayOfNumberOnly.md
new file mode 100644
index 00000000000..5b5c89bfd66
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfArrayOfNumberOnly.md
@@ -0,0 +1,10 @@
+# ArrayOfArrayOfNumberOnly
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**ArrayArrayNumber** | **[[int, float]]** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfEnums.md b/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfEnums.md
new file mode 100644
index 00000000000..ce8778c78f6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfEnums.md
@@ -0,0 +1,8 @@
+# ArrayOfEnums
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[StringEnum]** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfNumberOnly.md b/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfNumberOnly.md
new file mode 100644
index 00000000000..2fa514a7865
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ArrayOfNumberOnly.md
@@ -0,0 +1,10 @@
+# ArrayOfNumberOnly
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**ArrayNumber** | **[int, float]** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ArrayTest.md b/samples/openapi3/client/petstore/python-experimental/docs/ArrayTest.md
new file mode 100644
index 00000000000..b84215f20ac
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ArrayTest.md
@@ -0,0 +1,12 @@
+# ArrayTest
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**array_of_string** | **[str]** |  | [optional] 
+**array_array_of_integer** | **[[int]]** |  | [optional] 
+**array_array_of_model** | **[[ReadOnlyFirst]]** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ArrayWithValidationsInItems.md b/samples/openapi3/client/petstore/python-experimental/docs/ArrayWithValidationsInItems.md
new file mode 100644
index 00000000000..d19d241bfed
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ArrayWithValidationsInItems.md
@@ -0,0 +1,8 @@
+# ArrayWithValidationsInItems
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[int]** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Banana.md b/samples/openapi3/client/petstore/python-experimental/docs/Banana.md
new file mode 100644
index 00000000000..11b9e97a5c8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Banana.md
@@ -0,0 +1,10 @@
+# Banana
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**lengthCm** | **int, float** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/BananaReq.md b/samples/openapi3/client/petstore/python-experimental/docs/BananaReq.md
new file mode 100644
index 00000000000..68959cfbd6f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/BananaReq.md
@@ -0,0 +1,10 @@
+# BananaReq
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**lengthCm** | **int, float** |  | 
+**sweet** | **bool** |  | [optional] 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Bar.md b/samples/openapi3/client/petstore/python-experimental/docs/Bar.md
new file mode 100644
index 00000000000..f6e0141c5fc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Bar.md
@@ -0,0 +1,8 @@
+# Bar
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | defaults to "bar"
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/BasquePig.md b/samples/openapi3/client/petstore/python-experimental/docs/BasquePig.md
new file mode 100644
index 00000000000..76fa224a377
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/BasquePig.md
@@ -0,0 +1,10 @@
+# BasquePig
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**className** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Boolean.md b/samples/openapi3/client/petstore/python-experimental/docs/Boolean.md
new file mode 100644
index 00000000000..9e64a63c8ee
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Boolean.md
@@ -0,0 +1,8 @@
+# Boolean
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/BooleanEnum.md b/samples/openapi3/client/petstore/python-experimental/docs/BooleanEnum.md
new file mode 100644
index 00000000000..1235414f1e3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/BooleanEnum.md
@@ -0,0 +1,8 @@
+# BooleanEnum
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  |  must be one of [True, ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Capitalization.md b/samples/openapi3/client/petstore/python-experimental/docs/Capitalization.md
new file mode 100644
index 00000000000..a9f4f6ecdae
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Capitalization.md
@@ -0,0 +1,15 @@
+# Capitalization
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**smallCamel** | **str** |  | [optional] 
+**CapitalCamel** | **str** |  | [optional] 
+**small_Snake** | **str** |  | [optional] 
+**Capital_Snake** | **str** |  | [optional] 
+**SCA_ETH_Flow_Points** | **str** |  | [optional] 
+**ATT_NAME** | **str** | Name of the pet  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Cat.md b/samples/openapi3/client/petstore/python-experimental/docs/Cat.md
new file mode 100644
index 00000000000..a6d67ac8019
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Cat.md
@@ -0,0 +1,9 @@
+# Cat
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/CatAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/CatAllOf.md
new file mode 100644
index 00000000000..f2a9f7d35b7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/CatAllOf.md
@@ -0,0 +1,10 @@
+# CatAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**declawed** | **bool** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Category.md b/samples/openapi3/client/petstore/python-experimental/docs/Category.md
new file mode 100644
index 00000000000..a847da44a13
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Category.md
@@ -0,0 +1,11 @@
+# Category
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **int** |  | [optional] 
+**name** | **str** |  |  if omitted the server will use the default value of "default-name"
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ChildCat.md b/samples/openapi3/client/petstore/python-experimental/docs/ChildCat.md
new file mode 100644
index 00000000000..08b6b3c1cbd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ChildCat.md
@@ -0,0 +1,9 @@
+# ChildCat
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ChildCatAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/ChildCatAllOf.md
new file mode 100644
index 00000000000..1e0f07a3628
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ChildCatAllOf.md
@@ -0,0 +1,10 @@
+# ChildCatAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ClassModel.md b/samples/openapi3/client/petstore/python-experimental/docs/ClassModel.md
new file mode 100644
index 00000000000..97d387878b3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ClassModel.md
@@ -0,0 +1,12 @@
+# ClassModel
+
+Model for testing model with \"_class\" property
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**_class** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Client.md b/samples/openapi3/client/petstore/python-experimental/docs/Client.md
new file mode 100644
index 00000000000..7c0ad6e9734
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Client.md
@@ -0,0 +1,10 @@
+# Client
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**client** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComplexQuadrilateral.md b/samples/openapi3/client/petstore/python-experimental/docs/ComplexQuadrilateral.md
new file mode 100644
index 00000000000..0c647b16895
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComplexQuadrilateral.md
@@ -0,0 +1,9 @@
+# ComplexQuadrilateral
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComplexQuadrilateralAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/ComplexQuadrilateralAllOf.md
new file mode 100644
index 00000000000..d2cb47a3c42
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComplexQuadrilateralAllOf.md
@@ -0,0 +1,10 @@
+# ComplexQuadrilateralAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**quadrilateralType** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedAnyOfDifferentTypesNoValidations.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedAnyOfDifferentTypesNoValidations.md
new file mode 100644
index 00000000000..3dad57b962a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedAnyOfDifferentTypesNoValidations.md
@@ -0,0 +1,9 @@
+# ComposedAnyOfDifferentTypesNoValidations
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedArray.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedArray.md
new file mode 100644
index 00000000000..6f0ebdc39e0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedArray.md
@@ -0,0 +1,8 @@
+# ComposedArray
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[bool, date, datetime, dict, float, int, list, str, none_type]** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedBool.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedBool.md
new file mode 100644
index 00000000000..64ba095ebe4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedBool.md
@@ -0,0 +1,8 @@
+# ComposedBool
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedNone.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedNone.md
new file mode 100644
index 00000000000..f295563e704
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedNone.md
@@ -0,0 +1,8 @@
+# ComposedNone
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**none_type** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedNumber.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedNumber.md
new file mode 100644
index 00000000000..4c52af546f7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedNumber.md
@@ -0,0 +1,8 @@
+# ComposedNumber
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**float** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedObject.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedObject.md
new file mode 100644
index 00000000000..3939050270d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedObject.md
@@ -0,0 +1,9 @@
+# ComposedObject
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedOneOfDifferentTypes.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedOneOfDifferentTypes.md
new file mode 100644
index 00000000000..59ed1efabc6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedOneOfDifferentTypes.md
@@ -0,0 +1,11 @@
+# ComposedOneOfDifferentTypes
+
+this is a model that allows payloads of type object or number
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ComposedString.md b/samples/openapi3/client/petstore/python-experimental/docs/ComposedString.md
new file mode 100644
index 00000000000..37b16f50b4f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ComposedString.md
@@ -0,0 +1,8 @@
+# ComposedString
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Currency.md b/samples/openapi3/client/petstore/python-experimental/docs/Currency.md
new file mode 100644
index 00000000000..9811a54c6e5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Currency.md
@@ -0,0 +1,8 @@
+# Currency
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  |  must be one of ["eur", "usd", ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DanishPig.md b/samples/openapi3/client/petstore/python-experimental/docs/DanishPig.md
new file mode 100644
index 00000000000..f239dc97318
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DanishPig.md
@@ -0,0 +1,10 @@
+# DanishPig
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**className** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DateTimeTest.md b/samples/openapi3/client/petstore/python-experimental/docs/DateTimeTest.md
new file mode 100644
index 00000000000..408c95d0f9a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DateTimeTest.md
@@ -0,0 +1,8 @@
+# DateTimeTest
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**datetime** |  | defaults to isoparse('2010-01-01T10:10:10.000111+01:00')
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DateTimeWithValidations.md b/samples/openapi3/client/petstore/python-experimental/docs/DateTimeWithValidations.md
new file mode 100644
index 00000000000..bb2e7e17e71
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DateTimeWithValidations.md
@@ -0,0 +1,8 @@
+# DateTimeWithValidations
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**datetime** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DateWithValidations.md b/samples/openapi3/client/petstore/python-experimental/docs/DateWithValidations.md
new file mode 100644
index 00000000000..bce951bc5b5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DateWithValidations.md
@@ -0,0 +1,8 @@
+# DateWithValidations
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**date** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DecimalPayload.md b/samples/openapi3/client/petstore/python-experimental/docs/DecimalPayload.md
new file mode 100644
index 00000000000..2e0821dd053
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DecimalPayload.md
@@ -0,0 +1,8 @@
+# DecimalPayload
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DefaultApi.md b/samples/openapi3/client/petstore/python-experimental/docs/DefaultApi.md
new file mode 100644
index 00000000000..768fca5bd47
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DefaultApi.md
@@ -0,0 +1,70 @@
+# petstore_api.DefaultApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**foo_get**](DefaultApi.md#foo_get) | **GET** /foo | 
+
+# **foo_get**
+> InlineResponseDefault foo_get()
+
+
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import default_api
+from petstore_api.model.inline_response_default import InlineResponseDefault
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = default_api.DefaultApi(api_client)
+
+    # example, this endpoint has no required or optional parameters
+    try:
+        api_response = api_instance.foo_get()
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling DefaultApi->foo_get: %s\n" % e)
+```
+### Parameters
+This endpoint does not need any parameter.
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+default | ApiResponseForDefault | response 
+
+#### ApiResponseForDefault
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor0ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor0ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**InlineResponseDefault**](InlineResponseDefault.md) |  | 
+
+
+
+[**InlineResponseDefault**](InlineResponseDefault.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Dog.md b/samples/openapi3/client/petstore/python-experimental/docs/Dog.md
new file mode 100644
index 00000000000..851567bc58a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Dog.md
@@ -0,0 +1,9 @@
+# Dog
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/DogAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/DogAllOf.md
new file mode 100644
index 00000000000..8dfd16400b6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/DogAllOf.md
@@ -0,0 +1,10 @@
+# DogAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**breed** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Drawing.md b/samples/openapi3/client/petstore/python-experimental/docs/Drawing.md
new file mode 100644
index 00000000000..e535601a731
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Drawing.md
@@ -0,0 +1,13 @@
+# Drawing
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**mainShape** | [**Shape**](Shape.md) |  | [optional] 
+**shapeOrNull** | [**ShapeOrNull**](ShapeOrNull.md) |  | [optional] 
+**nullableShape** | [**NullableShape**](NullableShape.md) |  | [optional] 
+**shapes** | **[Shape]** |  | [optional] 
+**any string name** | **Fruit** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/EnumArrays.md b/samples/openapi3/client/petstore/python-experimental/docs/EnumArrays.md
new file mode 100644
index 00000000000..78ecdb677e4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/EnumArrays.md
@@ -0,0 +1,11 @@
+# EnumArrays
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**just_symbol** | **str** |  | [optional] 
+**array_enum** | **[str]** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/EnumClass.md b/samples/openapi3/client/petstore/python-experimental/docs/EnumClass.md
new file mode 100644
index 00000000000..1399e59181d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/EnumClass.md
@@ -0,0 +1,8 @@
+# EnumClass
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | defaults to "-efg",  must be one of ["_abc", "-efg", "(xyz)", ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/EnumTest.md b/samples/openapi3/client/petstore/python-experimental/docs/EnumTest.md
new file mode 100644
index 00000000000..e720f3bf92d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/EnumTest.md
@@ -0,0 +1,18 @@
+# EnumTest
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**enum_string** | **str** |  | [optional] 
+**enum_string_required** | **str** |  | 
+**enum_integer** | **int** |  | [optional] 
+**enum_number** | **int, float** |  | [optional] 
+**stringEnum** | [**StringEnum**](StringEnum.md) |  | [optional] 
+**IntegerEnum** | [**IntegerEnum**](IntegerEnum.md) |  | [optional] 
+**StringEnumWithDefaultValue** | [**StringEnumWithDefaultValue**](StringEnumWithDefaultValue.md) |  | [optional] 
+**IntegerEnumWithDefaultValue** | [**IntegerEnumWithDefaultValue**](IntegerEnumWithDefaultValue.md) |  | [optional] 
+**IntegerEnumOneValue** | [**IntegerEnumOneValue**](IntegerEnumOneValue.md) |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/EquilateralTriangle.md b/samples/openapi3/client/petstore/python-experimental/docs/EquilateralTriangle.md
new file mode 100644
index 00000000000..834bcb30fd6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/EquilateralTriangle.md
@@ -0,0 +1,9 @@
+# EquilateralTriangle
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/EquilateralTriangleAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/EquilateralTriangleAllOf.md
new file mode 100644
index 00000000000..8e151789e01
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/EquilateralTriangleAllOf.md
@@ -0,0 +1,10 @@
+# EquilateralTriangleAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**triangleType** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/FakeApi.md b/samples/openapi3/client/petstore/python-experimental/docs/FakeApi.md
new file mode 100644
index 00000000000..45fdc4a5c1c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/FakeApi.md
@@ -0,0 +1,2604 @@
+# petstore_api.FakeApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**additional_properties_with_array_of_enums**](FakeApi.md#additional_properties_with_array_of_enums) | **GET** /fake/additional-properties-with-array-of-enums | Additional Properties with Array of Enums
+[**array_model**](FakeApi.md#array_model) | **POST** /fake/refs/arraymodel | 
+[**array_of_enums**](FakeApi.md#array_of_enums) | **POST** /fake/refs/array-of-enums | Array of Enums
+[**body_with_file_schema**](FakeApi.md#body_with_file_schema) | **PUT** /fake/body-with-file-schema | 
+[**body_with_query_params**](FakeApi.md#body_with_query_params) | **PUT** /fake/body-with-query-params | 
+[**boolean**](FakeApi.md#boolean) | **POST** /fake/refs/boolean | 
+[**case_sensitive_params**](FakeApi.md#case_sensitive_params) | **PUT** /fake/case-sensitive-params | 
+[**client_model**](FakeApi.md#client_model) | **PATCH** /fake | To test \&quot;client\&quot; model
+[**composed_one_of_different_types**](FakeApi.md#composed_one_of_different_types) | **POST** /fake/refs/composed_one_of_number_with_validations | 
+[**endpoint_parameters**](FakeApi.md#endpoint_parameters) | **POST** /fake | Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+[**enum_parameters**](FakeApi.md#enum_parameters) | **GET** /fake | To test enum parameters
+[**fake_health_get**](FakeApi.md#fake_health_get) | **GET** /fake/health | Health check endpoint
+[**group_parameters**](FakeApi.md#group_parameters) | **DELETE** /fake | Fake endpoint to test group parameters (optional)
+[**inline_additional_properties**](FakeApi.md#inline_additional_properties) | **POST** /fake/inline-additionalProperties | test inline additionalProperties
+[**json_form_data**](FakeApi.md#json_form_data) | **GET** /fake/jsonFormData | test json serialization of form data
+[**mammal**](FakeApi.md#mammal) | **POST** /fake/refs/mammal | 
+[**number_with_validations**](FakeApi.md#number_with_validations) | **POST** /fake/refs/number | 
+[**object_model_with_ref_props**](FakeApi.md#object_model_with_ref_props) | **POST** /fake/refs/object_model_with_ref_props | 
+[**parameter_collisions**](FakeApi.md#parameter_collisions) | **POST** /fake/parameterCollisions/{1}/{aB}/{Ab}/{self}/{A-B}/ | parameter collision case
+[**query_parameter_collection_format**](FakeApi.md#query_parameter_collection_format) | **PUT** /fake/test-query-paramters | 
+[**string**](FakeApi.md#string) | **POST** /fake/refs/string | 
+[**string_enum**](FakeApi.md#string_enum) | **POST** /fake/refs/enum | 
+[**upload_download_file**](FakeApi.md#upload_download_file) | **POST** /fake/uploadDownloadFile | uploads a file and downloads a file using application/octet-stream
+[**upload_file**](FakeApi.md#upload_file) | **POST** /fake/uploadFile | uploads a file using multipart/form-data
+[**upload_files**](FakeApi.md#upload_files) | **POST** /fake/uploadFiles | uploads files using multipart/form-data
+
+# **additional_properties_with_array_of_enums**
+> AdditionalPropertiesWithArrayOfEnums additional_properties_with_array_of_enums()
+
+Additional Properties with Array of Enums
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.additional_properties_with_array_of_enums import AdditionalPropertiesWithArrayOfEnums
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = AdditionalPropertiesWithArrayOfEnums(
+        key=[
+            EnumClass("-efg"),
+        ],
+    )
+    try:
+        # Additional Properties with Array of Enums
+        api_response = api_instance.additional_properties_with_array_of_enums(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->additional_properties_with_array_of_enums: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**AdditionalPropertiesWithArrayOfEnums**](AdditionalPropertiesWithArrayOfEnums.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Got object with additional properties with array of enums 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**AdditionalPropertiesWithArrayOfEnums**](AdditionalPropertiesWithArrayOfEnums.md) |  | 
+
+
+
+[**AdditionalPropertiesWithArrayOfEnums**](AdditionalPropertiesWithArrayOfEnums.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **array_model**
+> AnimalFarm array_model()
+
+
+
+Test serialization of ArrayModel
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.animal_farm import AnimalFarm
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = AnimalFarm([
+        Animal(),
+    ])
+    try:
+        api_response = api_instance.array_model(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->array_model: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**AnimalFarm**](AnimalFarm.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output model 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**AnimalFarm**](AnimalFarm.md) |  | 
+
+
+
+[**AnimalFarm**](AnimalFarm.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **array_of_enums**
+> ArrayOfEnums array_of_enums()
+
+Array of Enums
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.array_of_enums import ArrayOfEnums
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = ArrayOfEnums([
+        StringEnum("placed"),
+    ])
+    try:
+        # Array of Enums
+        api_response = api_instance.array_of_enums(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->array_of_enums: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ArrayOfEnums**](ArrayOfEnums.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Got named array of enums 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ArrayOfEnums**](ArrayOfEnums.md) |  | 
+
+
+
+[**ArrayOfEnums**](ArrayOfEnums.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **body_with_file_schema**
+> body_with_file_schema(file_schema_test_class)
+
+
+
+For this test, the body for this request much reference a schema named `File`.
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.file_schema_test_class import FileSchemaTestClass
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = FileSchemaTestClass(
+        file=File(
+            source_uri="source_uri_example",
+        ),
+        files=[
+            File(
+                source_uri="source_uri_example",
+            ),
+        ],
+    )
+    try:
+        api_response = api_instance.body_with_file_schema(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->body_with_file_schema: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**FileSchemaTestClass**](FileSchemaTestClass.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Success 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **body_with_query_params**
+> body_with_query_params(queryuser)
+
+
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.user import User
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'query': "query_example",
+    }
+    body = User(
+        id=1,
+        username="username_example",
+        first_name="first_name_example",
+        last_name="last_name_example",
+        email="email_example",
+        password="password_example",
+        phone="phone_example",
+        user_status=1,
+        object_with_no_declared_props=dict(),
+        object_with_no_declared_props_nullable=dict(),
+        any_type_prop=None,
+        any_type_prop_nullable=None,
+    )
+    try:
+        api_response = api_instance.body_with_query_params(
+            query_params=query_params,
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->body_with_query_params: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+query_params | RequestQueryParams | |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**User**](User.md) |  | 
+
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query | QuerySchema | | 
+
+
+#### QuerySchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Success 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **boolean**
+> bool boolean()
+
+
+
+Test serialization of outer boolean types
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = True
+    try:
+        api_response = api_instance.boolean(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->boolean: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output boolean 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  | 
+
+
+**bool**
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **case_sensitive_params**
+> case_sensitive_params(some_varsome_var2some_var3)
+
+
+
+Ensures that original naming is used in endpoint params, that way we on't have collisions
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'someVar': "someVar_example",
+        'SomeVar': "SomeVar_example",
+        'some_var': "some_var_example",
+    }
+    try:
+        api_response = api_instance.case_sensitive_params(
+            query_params=query_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->case_sensitive_params: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query_params | RequestQueryParams | |
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+someVar | SomeVarSchema | | 
+SomeVar | SomeVarSchema | | 
+some_var | SomeVarSchema | | 
+
+
+#### SomeVarSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### SomeVarSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### SomeVarSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Success 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **client_model**
+> Client client_model(client)
+
+To test \"client\" model
+
+To test \"client\" model
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.client import Client
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Client(
+        client="client_example",
+    )
+    try:
+        # To test \"client\" model
+        api_response = api_instance.client_model(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->client_model: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Client**](Client.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Client**](Client.md) |  | 
+
+
+
+[**Client**](Client.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **composed_one_of_different_types**
+> ComposedOneOfDifferentTypes composed_one_of_different_types()
+
+
+
+Test serialization of object with $refed properties
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.composed_one_of_different_types import ComposedOneOfDifferentTypes
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = ComposedOneOfDifferentTypes()
+    try:
+        api_response = api_instance.composed_one_of_different_types(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->composed_one_of_different_types: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ComposedOneOfDifferentTypes**](ComposedOneOfDifferentTypes.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output model 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ComposedOneOfDifferentTypes**](ComposedOneOfDifferentTypes.md) |  | 
+
+
+
+[**ComposedOneOfDifferentTypes**](ComposedOneOfDifferentTypes.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **endpoint_parameters**
+> endpoint_parameters()
+
+Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+
+Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+
+### Example
+
+* Basic Authentication (http_basic_test):
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure HTTP basic authorization: http_basic_test
+configuration = petstore_api.Configuration(
+    username = 'YOUR_USERNAME',
+    password = 'YOUR_PASSWORD'
+)
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = dict(
+        integer=10,
+        int32=20,
+        int64=1,
+        number=32.1,
+        _float=3.14,
+        double=67.8,
+        string="a",
+        pattern_without_delimiter="AUR,rZ#UM/?R,Fp^l6$ARjbhJk C",
+        byte='YQ==',
+        binary=open('/path/to/file', 'rb'),
+        date=isoparse('1970-01-01').date(),
+        date_time=isoparse('2020-02-02T20:20:20.22222Z'),
+        password="password_example",
+        callback="callback_example",
+    )
+    try:
+        # Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+        api_response = api_instance.endpoint_parameters(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->endpoint_parameters: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/x-www-form-urlencoded' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationXWwwFormUrlencoded
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**integer** | **int** | None | [optional] 
+**int32** | **int** | None | [optional] 
+**int64** | **int** | None | [optional] 
+**number** | **int, float** | None | 
+**float** | **int, float** | None | [optional] 
+**double** | **int, float** | None | 
+**string** | **str** | None | [optional] 
+**pattern_without_delimiter** | **str** | None | 
+**byte** | **str** | None | 
+**binary** | **file_type** | None | [optional] 
+**date** | **date** | None | [optional] 
+**dateTime** | **datetime** | None | [optional]  if omitted the server will use the default value of isoparse('2010-02-01T10:20:10.11111+01:00')
+**password** | **str** | None | [optional] 
+**callback** | **str** | None | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid username supplied 
+404 | ApiResponseFor404 | User not found 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+[http_basic_test](../README.md#http_basic_test)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **enum_parameters**
+> enum_parameters()
+
+To test enum parameters
+
+To test enum parameters
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    query_params = {
+        'enum_query_string_array': [
+        "$",
+    ],
+        'enum_query_string': "-efg",
+        'enum_query_integer': 1,
+        'enum_query_double': 1.1,
+    }
+    header_params = {
+        'enum_header_string_array': [
+        "$",
+    ],
+        'enum_header_string': "-efg",
+    }
+    body = dict(
+        enum_form_string_array=[
+            "$",
+        ],
+        enum_form_string="-efg",
+    )
+    try:
+        # To test enum parameters
+        api_response = api_instance.enum_parameters(
+            query_params=query_params,
+            header_params=header_params,
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->enum_parameters: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] | optional, default is unset |
+query_params | RequestQueryParams | |
+header_params | RequestHeaderParams | |
+content_type | str | optional, default is 'application/x-www-form-urlencoded' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationXWwwFormUrlencoded
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**enum_form_string_array** | **[str]** | Form parameter enum test (string array) | [optional] 
+**enum_form_string** | **str** | Form parameter enum test (string) | [optional]  if omitted the server will use the default value of "-efg"
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+enum_query_string_array | EnumQueryStringArraySchema | | optional
+enum_query_string | EnumQueryStringSchema | | optional
+enum_query_integer | EnumQueryIntegerSchema | | optional
+enum_query_double | EnumQueryDoubleSchema | | optional
+
+
+#### EnumQueryStringArraySchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### EnumQueryStringSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | defaults to "-efg",  must be one of ["_abc", "-efg", "(xyz)", ]
+
+#### EnumQueryIntegerSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  |  must be one of [1, -2, ]
+
+#### EnumQueryDoubleSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int, float** |  |  must be one of [1.1, -1.2, ]
+
+### header_params
+#### RequestHeaderParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+enum_header_string_array | EnumHeaderStringArraySchema | | optional
+enum_header_string | EnumHeaderStringSchema | | optional
+
+#### EnumHeaderStringArraySchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### EnumHeaderStringSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | defaults to "-efg",  must be one of ["_abc", "-efg", "(xyz)", ]
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid request 
+404 | ApiResponseFor404 | Not found 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **fake_health_get**
+> HealthCheckResult fake_health_get()
+
+Health check endpoint
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.health_check_result import HealthCheckResult
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example, this endpoint has no required or optional parameters
+    try:
+        # Health check endpoint
+        api_response = api_instance.fake_health_get()
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->fake_health_get: %s\n" % e)
+```
+### Parameters
+This endpoint does not need any parameter.
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | The instance started successfully 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**HealthCheckResult**](HealthCheckResult.md) |  | 
+
+
+
+[**HealthCheckResult**](HealthCheckResult.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **group_parameters**
+> group_parameters(required_string_grouprequired_boolean_grouprequired_int64_group)
+
+Fake endpoint to test group parameters (optional)
+
+Fake endpoint to test group parameters (optional)
+
+### Example
+
+* Bearer (JWT) Authentication (bearer_test):
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure Bearer authorization (JWT): bearer_test
+configuration = petstore_api.Configuration(
+    access_token = 'YOUR_BEARER_TOKEN'
+)
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'required_string_group': 1,
+        'required_int64_group': 1,
+    }
+    header_params = {
+        'required_boolean_group': True,
+    }
+    try:
+        # Fake endpoint to test group parameters (optional)
+        api_response = api_instance.group_parameters(
+            query_params=query_params,
+            header_params=header_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->group_parameters: %s\n" % e)
+
+    # example passing only optional values
+    query_params = {
+        'required_string_group': 1,
+        'required_int64_group': 1,
+        'string_group': 1,
+        'int64_group': 1,
+    }
+    header_params = {
+        'required_boolean_group': True,
+        'boolean_group': True,
+    }
+    try:
+        # Fake endpoint to test group parameters (optional)
+        api_response = api_instance.group_parameters(
+            query_params=query_params,
+            header_params=header_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->group_parameters: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query_params | RequestQueryParams | |
+header_params | RequestHeaderParams | |
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+required_string_group | RequiredStringGroupSchema | | 
+required_int64_group | RequiredInt64GroupSchema | | 
+string_group | StringGroupSchema | | optional
+int64_group | Int64GroupSchema | | optional
+
+
+#### RequiredStringGroupSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+#### RequiredInt64GroupSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+#### StringGroupSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+#### Int64GroupSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### header_params
+#### RequestHeaderParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+required_boolean_group | RequiredBooleanGroupSchema | | 
+boolean_group | BooleanGroupSchema | | optional
+
+#### RequiredBooleanGroupSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  | 
+
+#### BooleanGroupSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**bool** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Someting wrong 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+[bearer_test](../README.md#bearer_test)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **inline_additional_properties**
+> inline_additional_properties(request_body)
+
+test inline additionalProperties
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = dict(
+        "key": "key_example",
+    )
+    try:
+        # test inline additionalProperties
+        api_response = api_instance.inline_additional_properties(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->inline_additional_properties: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **str** | any string name can be used but the value must be the correct type | [optional]
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **json_form_data**
+> json_form_data()
+
+test json serialization of form data
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = dict(
+        param="param_example",
+        param2="param2_example",
+    )
+    try:
+        # test json serialization of form data
+        api_response = api_instance.json_form_data(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->json_form_data: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/x-www-form-urlencoded' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationXWwwFormUrlencoded
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**param** | **str** | field1 | 
+**param2** | **str** | field2 | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **mammal**
+> Mammal mammal(mammal)
+
+
+
+Test serialization of mammals
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.mammal import Mammal
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Mammal(
+        has_baleen=True,
+        has_teeth=True,
+        class_name="whale",
+    )
+    try:
+        api_response = api_instance.mammal(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->mammal: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Mammal**](Mammal.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output mammal 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Mammal**](Mammal.md) |  | 
+
+
+
+[**Mammal**](Mammal.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **number_with_validations**
+> NumberWithValidations number_with_validations()
+
+
+
+Test serialization of outer number types
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.number_with_validations import NumberWithValidations
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = NumberWithValidations(10)
+    try:
+        api_response = api_instance.number_with_validations(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->number_with_validations: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**NumberWithValidations**](NumberWithValidations.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output number 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**NumberWithValidations**](NumberWithValidations.md) |  | 
+
+
+
+[**NumberWithValidations**](NumberWithValidations.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **object_model_with_ref_props**
+> ObjectModelWithRefProps object_model_with_ref_props()
+
+
+
+Test serialization of object with $refed properties
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.object_model_with_ref_props import ObjectModelWithRefProps
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = ObjectModelWithRefProps(
+        my_number=NumberWithValidations(10),
+        my_string="my_string_example",
+        my_boolean=True,
+    )
+    try:
+        api_response = api_instance.object_model_with_ref_props(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->object_model_with_ref_props: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ObjectModelWithRefProps**](ObjectModelWithRefProps.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output model 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ObjectModelWithRefProps**](ObjectModelWithRefProps.md) |  | 
+
+
+
+[**ObjectModelWithRefProps**](ObjectModelWithRefProps.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **parameter_collisions**
+> bool, date, datetime, dict, float, int, list, str, none_type parameter_collisions(_3a_b5ab2_self3a_b6)
+
+parameter collision case
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        '1': "1_example",
+        'aB': "aB_example",
+        'Ab': "Ab_example",
+        'self': "self_example",
+        'A-B': "A-B_example",
+    }
+    query_params = {
+    }
+    cookie_params = {
+    }
+    header_params = {
+    }
+    try:
+        # parameter collision case
+        api_response = api_instance.parameter_collisions(
+            path_params=path_params,
+            query_params=query_params,
+            header_params=header_params,
+            cookie_params=cookie_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->parameter_collisions: %s\n" % e)
+
+    # example passing only optional values
+    path_params = {
+        '1': "1_example",
+        'aB': "aB_example",
+        'Ab': "Ab_example",
+        'self': "self_example",
+        'A-B': "A-B_example",
+    }
+    query_params = {
+        '1': "1_example",
+        'aB': "aB_example",
+        'Ab': "Ab_example",
+        'self': "self_example",
+        'A-B': "A-B_example",
+    }
+    cookie_params = {
+        '1': "1_example",
+        'aB': "aB_example",
+        'Ab': "Ab_example",
+        'self': "self_example",
+        'A-B': "A-B_example",
+    }
+    header_params = {
+        '1': "1_example",
+        'aB': "aB_example",
+        'self': "self_example",
+        'A-B': "A-B_example",
+    }
+    body = None
+    try:
+        # parameter collision case
+        api_response = api_instance.parameter_collisions(
+            path_params=path_params,
+            query_params=query_params,
+            header_params=header_params,
+            cookie_params=cookie_params,
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->parameter_collisions: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+query_params | RequestQueryParams | |
+header_params | RequestHeaderParams | |
+path_params | RequestPathParams | |
+cookie_params | RequestCookieParams | |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+typing.Union[dict, frozendict, str, date, datetime, int, float, bool, Decimal, None, list, tuple, bytes] | |
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+1 | Model1Schema | | optional
+aB | ABSchema | | optional
+Ab | AbSchema | | optional
+self | ModelSelfSchema | | optional
+A-B | ABSchema | | optional
+
+
+#### Model1Schema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### AbSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ModelSelfSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### header_params
+#### RequestHeaderParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+1 | Model1Schema | | optional
+aB | ABSchema | | optional
+self | ModelSelfSchema | | optional
+A-B | ABSchema | | optional
+
+#### Model1Schema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ModelSelfSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+1 | Model1Schema | | 
+aB | ABSchema | | 
+Ab | AbSchema | | 
+self | ModelSelfSchema | | 
+A-B | ABSchema | | 
+
+#### Model1Schema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### AbSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ModelSelfSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### cookie_params
+#### RequestCookieParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+1 | Model1Schema | | optional
+aB | ABSchema | | optional
+Ab | AbSchema | | optional
+self | ModelSelfSchema | | optional
+A-B | ABSchema | | optional
+
+#### Model1Schema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### AbSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ModelSelfSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### ABSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | success 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+typing.Union[dict, frozendict, str, date, datetime, int, float, bool, Decimal, None, list, tuple, bytes] | |
+
+
+**bool, date, datetime, dict, float, int, list, str, none_type**
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **query_parameter_collection_format**
+> query_parameter_collection_format(pipeioutilhttpurlcontextref_param)
+
+
+
+To test the collection format in query parameters
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.string_with_validation import StringWithValidation
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'pipe': [
+        "pipe_example",
+    ],
+        'ioutil': [
+        "ioutil_example",
+    ],
+        'http': [
+        "http_example",
+    ],
+        'url': [
+        "url_example",
+    ],
+        'context': [
+        "context_example",
+    ],
+        'refParam': StringWithValidation("refParam_example"),
+    }
+    try:
+        api_response = api_instance.query_parameter_collection_format(
+            query_params=query_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->query_parameter_collection_format: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query_params | RequestQueryParams | |
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+pipe | PipeSchema | | 
+ioutil | IoutilSchema | | 
+http | HttpSchema | | 
+url | UrlSchema | | 
+context | ContextSchema | | 
+refParam | RefParamSchema | | 
+
+
+#### PipeSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### IoutilSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### HttpSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### UrlSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### ContextSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+#### RefParamSchema
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**StringWithValidation**](StringWithValidation.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Success 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **string**
+> str string()
+
+
+
+Test serialization of outer string types
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = "body_example"
+    try:
+        api_response = api_instance.string(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->string: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output string 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+
+**str**
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **string_enum**
+> StringEnum string_enum()
+
+
+
+Test serialization of outer enum
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.string_enum import StringEnum
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = StringEnum("placed")
+    try:
+        api_response = api_instance.string_enum(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->string_enum: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, Unset] | optional, default is unset |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**StringEnum**](StringEnum.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Output enum 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**StringEnum**](StringEnum.md) |  | 
+
+
+
+[**StringEnum**](StringEnum.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **upload_download_file**
+> file_type upload_download_file(body)
+
+uploads a file and downloads a file using application/octet-stream
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = open('/path/to/file', 'rb')
+    try:
+        # uploads a file and downloads a file using application/octet-stream
+        api_response = api_instance.upload_download_file(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->upload_download_file: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationOctetStream] | required |
+content_type | str | optional, default is 'application/octet-stream' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/octet-stream', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationOctetStream
+
+file to upload
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**file_type** | file to upload | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationOctetStream, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationOctetStream
+
+file to download
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**file_type** | file to download | 
+
+
+**file_type**
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **upload_file**
+> ApiResponse upload_file()
+
+uploads a file using multipart/form-data
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.api_response import ApiResponse
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = dict(
+        additional_metadata="additional_metadata_example",
+        file=open('/path/to/file', 'rb'),
+    )
+    try:
+        # uploads a file using multipart/form-data
+        api_response = api_instance.upload_file(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->upload_file: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyMultipartFormData, Unset] | optional, default is unset |
+content_type | str | optional, default is 'multipart/form-data' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyMultipartFormData
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**additionalMetadata** | **str** | Additional data to pass to server | [optional] 
+**file** | **file_type** | file to upload | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ApiResponse**](ApiResponse.md) |  | 
+
+
+
+[**ApiResponse**](ApiResponse.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **upload_files**
+> ApiResponse upload_files()
+
+uploads files using multipart/form-data
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import fake_api
+from petstore_api.model.api_response import ApiResponse
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_api.FakeApi(api_client)
+
+    # example passing only optional values
+    body = dict(
+        files=[
+            open('/path/to/file', 'rb'),
+        ],
+    )
+    try:
+        # uploads files using multipart/form-data
+        api_response = api_instance.upload_files(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeApi->upload_files: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyMultipartFormData, Unset] | optional, default is unset |
+content_type | str | optional, default is 'multipart/form-data' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyMultipartFormData
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**files** | **[file_type]** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ApiResponse**](ApiResponse.md) |  | 
+
+
+
+[**ApiResponse**](ApiResponse.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/FakeClassnameTags123Api.md b/samples/openapi3/client/petstore/python-experimental/docs/FakeClassnameTags123Api.md
new file mode 100644
index 00000000000..6d5c732f70e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/FakeClassnameTags123Api.md
@@ -0,0 +1,105 @@
+# petstore_api.FakeClassnameTags123Api
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**classname**](FakeClassnameTags123Api.md#classname) | **PATCH** /fake_classname_test | To test class name in snake case
+
+# **classname**
+> Client classname(client)
+
+To test class name in snake case
+
+To test class name in snake case
+
+### Example
+
+* Api Key Authentication (api_key_query):
+```python
+import petstore_api
+from petstore_api.api import fake_classname_tags_123_api
+from petstore_api.model.client import Client
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure API key authorization: api_key_query
+configuration.api_key['api_key_query'] = 'YOUR_API_KEY'
+
+# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
+# configuration.api_key_prefix['api_key_query'] = 'Bearer'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = fake_classname_tags_123_api.FakeClassnameTags123Api(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Client(
+        client="client_example",
+    )
+    try:
+        # To test class name in snake case
+        api_response = api_instance.classname(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling FakeClassnameTags123Api->classname: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Client**](Client.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Client**](Client.md) |  | 
+
+
+
+[**Client**](Client.md)
+
+### Authorization
+
+[api_key_query](../README.md#api_key_query)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/File.md b/samples/openapi3/client/petstore/python-experimental/docs/File.md
new file mode 100644
index 00000000000..d541f9f0ab4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/File.md
@@ -0,0 +1,12 @@
+# File
+
+Must be named `File` for test.
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**sourceURI** | **str** | Test capitalization | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/FileSchemaTestClass.md b/samples/openapi3/client/petstore/python-experimental/docs/FileSchemaTestClass.md
new file mode 100644
index 00000000000..e7bdc36bfd5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/FileSchemaTestClass.md
@@ -0,0 +1,11 @@
+# FileSchemaTestClass
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**file** | [**File**](File.md) |  | [optional] 
+**files** | **[File]** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Foo.md b/samples/openapi3/client/petstore/python-experimental/docs/Foo.md
new file mode 100644
index 00000000000..e948b10caef
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Foo.md
@@ -0,0 +1,10 @@
+# Foo
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**bar** | **str** |  | [optional]  if omitted the server will use the default value of "bar"
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/FormatTest.md b/samples/openapi3/client/petstore/python-experimental/docs/FormatTest.md
new file mode 100644
index 00000000000..472216aa457
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/FormatTest.md
@@ -0,0 +1,30 @@
+# FormatTest
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**integer** | **int** |  | [optional] 
+**int32** | **int** |  | [optional] 
+**int32withValidations** | **int** |  | [optional] 
+**int64** | **int** |  | [optional] 
+**number** | **int, float** |  | 
+**float** | **int, float** | this is a reserved python keyword | [optional] 
+**float32** | **int, float** |  | [optional] 
+**double** | **int, float** |  | [optional] 
+**float64** | **int, float** |  | [optional] 
+**arrayWithUniqueItems** | **[int, float]** |  | [optional] 
+**string** | **str** |  | [optional] 
+**byte** | **str** |  | 
+**binary** | **file_type** |  | [optional] 
+**date** | **date** |  | 
+**dateTime** | **datetime** |  | [optional] 
+**uuid** | **str** |  | [optional] 
+**uuidNoExample** | **str** |  | [optional] 
+**password** | **str** |  | 
+**pattern_with_digits** | **str** | A string that is a 10 digit number. Can have leading zeros. | [optional] 
+**pattern_with_digits_and_delimiter** | **str** | A string starting with &#x27;image_&#x27; (case insensitive) and one to three digits following i.e. Image_01. | [optional] 
+**noneProp** | **none_type** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Fruit.md b/samples/openapi3/client/petstore/python-experimental/docs/Fruit.md
new file mode 100644
index 00000000000..42684ab7a15
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Fruit.md
@@ -0,0 +1,10 @@
+# Fruit
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**color** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/FruitReq.md b/samples/openapi3/client/petstore/python-experimental/docs/FruitReq.md
new file mode 100644
index 00000000000..eceb328ee61
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/FruitReq.md
@@ -0,0 +1,9 @@
+# FruitReq
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/GmFruit.md b/samples/openapi3/client/petstore/python-experimental/docs/GmFruit.md
new file mode 100644
index 00000000000..13879f26321
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/GmFruit.md
@@ -0,0 +1,10 @@
+# GmFruit
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**color** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/GrandparentAnimal.md b/samples/openapi3/client/petstore/python-experimental/docs/GrandparentAnimal.md
new file mode 100644
index 00000000000..ed51b572862
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/GrandparentAnimal.md
@@ -0,0 +1,10 @@
+# GrandparentAnimal
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**pet_type** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/HasOnlyReadOnly.md b/samples/openapi3/client/petstore/python-experimental/docs/HasOnlyReadOnly.md
new file mode 100644
index 00000000000..14ac98c0769
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/HasOnlyReadOnly.md
@@ -0,0 +1,11 @@
+# HasOnlyReadOnly
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**bar** | **str** |  | [optional] [readonly] 
+**foo** | **str** |  | [optional] [readonly] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/HealthCheckResult.md b/samples/openapi3/client/petstore/python-experimental/docs/HealthCheckResult.md
new file mode 100644
index 00000000000..8ce835f39a4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/HealthCheckResult.md
@@ -0,0 +1,12 @@
+# HealthCheckResult
+
+Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**NullableMessage** | **str, none_type** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/InlineResponseDefault.md b/samples/openapi3/client/petstore/python-experimental/docs/InlineResponseDefault.md
new file mode 100644
index 00000000000..d28a65a74d9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/InlineResponseDefault.md
@@ -0,0 +1,10 @@
+# InlineResponseDefault
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**string** | [**Foo**](Foo.md) |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnum.md b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnum.md
new file mode 100644
index 00000000000..32d66541446
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnum.md
@@ -0,0 +1,8 @@
+# IntegerEnum
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  |  must be one of [0, 1, 2, ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumBig.md b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumBig.md
new file mode 100644
index 00000000000..58d94b3102b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumBig.md
@@ -0,0 +1,8 @@
+# IntegerEnumBig
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  |  must be one of [10, 11, 12, ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumOneValue.md b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumOneValue.md
new file mode 100644
index 00000000000..6fea6c1d441
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumOneValue.md
@@ -0,0 +1,8 @@
+# IntegerEnumOneValue
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  |  must be one of [0, ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumWithDefaultValue.md b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumWithDefaultValue.md
new file mode 100644
index 00000000000..b95a839f9bf
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IntegerEnumWithDefaultValue.md
@@ -0,0 +1,8 @@
+# IntegerEnumWithDefaultValue
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | defaults to 0,  must be one of [0, 1, 2, ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IntegerMax10.md b/samples/openapi3/client/petstore/python-experimental/docs/IntegerMax10.md
new file mode 100644
index 00000000000..768902e0aca
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IntegerMax10.md
@@ -0,0 +1,8 @@
+# IntegerMax10
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IntegerMin15.md b/samples/openapi3/client/petstore/python-experimental/docs/IntegerMin15.md
new file mode 100644
index 00000000000..35043be2fad
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IntegerMin15.md
@@ -0,0 +1,8 @@
+# IntegerMin15
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IsoscelesTriangle.md b/samples/openapi3/client/petstore/python-experimental/docs/IsoscelesTriangle.md
new file mode 100644
index 00000000000..7891fd5aa74
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IsoscelesTriangle.md
@@ -0,0 +1,9 @@
+# IsoscelesTriangle
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/IsoscelesTriangleAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/IsoscelesTriangleAllOf.md
new file mode 100644
index 00000000000..12881c0177a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/IsoscelesTriangleAllOf.md
@@ -0,0 +1,10 @@
+# IsoscelesTriangleAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**triangleType** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Mammal.md b/samples/openapi3/client/petstore/python-experimental/docs/Mammal.md
new file mode 100644
index 00000000000..6ecc91576e7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Mammal.md
@@ -0,0 +1,9 @@
+# Mammal
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/MapTest.md b/samples/openapi3/client/petstore/python-experimental/docs/MapTest.md
new file mode 100644
index 00000000000..b842ca9985c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/MapTest.md
@@ -0,0 +1,13 @@
+# MapTest
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**map_map_of_string** | **{str: ({str: (str,)},)}** |  | [optional] 
+**map_of_enum_string** | **{str: (str,)}** |  | [optional] 
+**direct_map** | **{str: (bool,)}** |  | [optional] 
+**indirect_map** | [**StringBooleanMap**](StringBooleanMap.md) |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/MixedPropertiesAndAdditionalPropertiesClass.md b/samples/openapi3/client/petstore/python-experimental/docs/MixedPropertiesAndAdditionalPropertiesClass.md
new file mode 100644
index 00000000000..f8406a0af42
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/MixedPropertiesAndAdditionalPropertiesClass.md
@@ -0,0 +1,12 @@
+# MixedPropertiesAndAdditionalPropertiesClass
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**uuid** | **str** |  | [optional] 
+**dateTime** | **datetime** |  | [optional] 
+**map** | **{str: (Animal,)}** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Model200Response.md b/samples/openapi3/client/petstore/python-experimental/docs/Model200Response.md
new file mode 100644
index 00000000000..71af8e10447
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Model200Response.md
@@ -0,0 +1,13 @@
+# Model200Response
+
+model with an invalid class name for python, starts with a number
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **int** |  | [optional] 
+**class** | **str** | this is a reserved python keyword | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ModelReturn.md b/samples/openapi3/client/petstore/python-experimental/docs/ModelReturn.md
new file mode 100644
index 00000000000..35abb51e239
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ModelReturn.md
@@ -0,0 +1,12 @@
+# ModelReturn
+
+Model for testing reserved words
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**return** | **int** | this is a reserved python keyword | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Money.md b/samples/openapi3/client/petstore/python-experimental/docs/Money.md
new file mode 100644
index 00000000000..5deec5712ae
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Money.md
@@ -0,0 +1,11 @@
+# Money
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**amount** | **str** |  | 
+**currency** | [**Currency**](Currency.md) |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Name.md b/samples/openapi3/client/petstore/python-experimental/docs/Name.md
new file mode 100644
index 00000000000..446d314fbd1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Name.md
@@ -0,0 +1,14 @@
+# Name
+
+Model for testing model name same as property name
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **int** |  | 
+**snake_case** | **int** |  | [optional] [readonly] 
+**property** | **str** | this is a reserved python keyword | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/NoAdditionalProperties.md b/samples/openapi3/client/petstore/python-experimental/docs/NoAdditionalProperties.md
new file mode 100644
index 00000000000..e5bf9b9be8c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/NoAdditionalProperties.md
@@ -0,0 +1,10 @@
+# NoAdditionalProperties
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **int** |  | 
+**petId** | **int** |  | [optional] 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/NullableClass.md b/samples/openapi3/client/petstore/python-experimental/docs/NullableClass.md
new file mode 100644
index 00000000000..5f2a1280eb2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/NullableClass.md
@@ -0,0 +1,21 @@
+# NullableClass
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**integer_prop** | **int, none_type** |  | [optional] 
+**number_prop** | **int, float, none_type** |  | [optional] 
+**boolean_prop** | **bool, none_type** |  | [optional] 
+**string_prop** | **str, none_type** |  | [optional] 
+**date_prop** | **date, none_type** |  | [optional] 
+**datetime_prop** | **datetime, none_type** |  | [optional] 
+**array_nullable_prop** | **[{str: (bool, date, datetime, dict, float, int, list, str, none_type)}], none_type** |  | [optional] 
+**array_and_items_nullable_prop** | **[{str: (bool, date, datetime, dict, float, int, list, str, none_type)}, none_type], none_type** |  | [optional] 
+**array_items_nullable** | **[{str: (bool, date, datetime, dict, float, int, list, str, none_type)}, none_type]** |  | [optional] 
+**object_nullable_prop** | **{str: ({str: (bool, date, datetime, dict, float, int, list, str, none_type)},)}, none_type** |  | [optional] 
+**object_and_items_nullable_prop** | **{str: ({str: (bool, date, datetime, dict, float, int, list, str, none_type)}, none_type)}, none_type** |  | [optional] 
+**object_items_nullable** | **{str: ({str: (bool, date, datetime, dict, float, int, list, str, none_type)}, none_type)}** |  | [optional] 
+**any string name** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/NullableShape.md b/samples/openapi3/client/petstore/python-experimental/docs/NullableShape.md
new file mode 100644
index 00000000000..1419c735f3c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/NullableShape.md
@@ -0,0 +1,11 @@
+# NullableShape
+
+The value may be a shape or the 'null' value. The 'nullable' attribute was introduced in OAS schema >= 3.0 and has been deprecated in OAS schema >= 3.1. For a nullable composed schema to work, one of its chosen oneOf schemas must be type null
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/NullableString.md b/samples/openapi3/client/petstore/python-experimental/docs/NullableString.md
new file mode 100644
index 00000000000..c01cb806783
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/NullableString.md
@@ -0,0 +1,8 @@
+# NullableString
+
+Type | Description | Notes
+------------- | ------------- | -------------
+typing.Union[str, None, ] | | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Number.md b/samples/openapi3/client/petstore/python-experimental/docs/Number.md
new file mode 100644
index 00000000000..63e3c42fdbd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Number.md
@@ -0,0 +1,8 @@
+# Number
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**float** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/NumberOnly.md b/samples/openapi3/client/petstore/python-experimental/docs/NumberOnly.md
new file mode 100644
index 00000000000..699674314e0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/NumberOnly.md
@@ -0,0 +1,10 @@
+# NumberOnly
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**JustNumber** | **int, float** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/NumberWithValidations.md b/samples/openapi3/client/petstore/python-experimental/docs/NumberWithValidations.md
new file mode 100644
index 00000000000..9fe4c99f8d8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/NumberWithValidations.md
@@ -0,0 +1,8 @@
+# NumberWithValidations
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**float** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ObjectInterface.md b/samples/openapi3/client/petstore/python-experimental/docs/ObjectInterface.md
new file mode 100644
index 00000000000..1ce1b34d41d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ObjectInterface.md
@@ -0,0 +1,9 @@
+# ObjectInterface
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ObjectModelWithRefProps.md b/samples/openapi3/client/petstore/python-experimental/docs/ObjectModelWithRefProps.md
new file mode 100644
index 00000000000..637175bc2f4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ObjectModelWithRefProps.md
@@ -0,0 +1,14 @@
+# ObjectModelWithRefProps
+
+a model that includes properties which should stay primitive (String + Boolean) and one which is defined as a class, NumberWithValidations
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**myNumber** | [**NumberWithValidations**](NumberWithValidations.md) |  | [optional] 
+**myString** | **str** |  | [optional] 
+**myBoolean** | **bool** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithDecimalProperties.md b/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithDecimalProperties.md
new file mode 100644
index 00000000000..10bd9061c0d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithDecimalProperties.md
@@ -0,0 +1,12 @@
+# ObjectWithDecimalProperties
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**length** | **str** |  | [optional] 
+**width** | **str** |  | [optional] 
+**cost** | [**Money**](Money.md) |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithDifficultlyNamedProps.md b/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithDifficultlyNamedProps.md
new file mode 100644
index 00000000000..cb45c6b10ef
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithDifficultlyNamedProps.md
@@ -0,0 +1,14 @@
+# ObjectWithDifficultlyNamedProps
+
+model with properties that have invalid names for python
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**$special[property.name]** | **int** |  | [optional] 
+**123-list** | **str** |  | 
+**123Number** | **int** |  | [optional] [readonly] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithValidations.md b/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithValidations.md
new file mode 100644
index 00000000000..3950d2ab95e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ObjectWithValidations.md
@@ -0,0 +1,9 @@
+# ObjectWithValidations
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Order.md b/samples/openapi3/client/petstore/python-experimental/docs/Order.md
new file mode 100644
index 00000000000..374172ad32c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Order.md
@@ -0,0 +1,15 @@
+# Order
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **int** |  | [optional] 
+**petId** | **int** |  | [optional] 
+**quantity** | **int** |  | [optional] 
+**shipDate** | **datetime** |  | [optional] 
+**status** | **str** | Order Status | [optional] 
+**complete** | **bool** |  | [optional]  if omitted the server will use the default value of False
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ParentPet.md b/samples/openapi3/client/petstore/python-experimental/docs/ParentPet.md
new file mode 100644
index 00000000000..28a57b84fea
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ParentPet.md
@@ -0,0 +1,9 @@
+# ParentPet
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Pet.md b/samples/openapi3/client/petstore/python-experimental/docs/Pet.md
new file mode 100644
index 00000000000..8eec44141d5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Pet.md
@@ -0,0 +1,17 @@
+# Pet
+
+Pet object that needs to be added to the store
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **int** |  | [optional] 
+**category** | [**Category**](Category.md) |  | [optional] 
+**name** | **str** |  | 
+**photoUrls** | **[str]** |  | 
+**tags** | **[Tag]** |  | [optional] 
+**status** | **str** | pet status in the store | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/PetApi.md b/samples/openapi3/client/petstore/python-experimental/docs/PetApi.md
new file mode 100644
index 00000000000..9bcb8308070
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/PetApi.md
@@ -0,0 +1,1362 @@
+# petstore_api.PetApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**add_pet**](PetApi.md#add_pet) | **POST** /pet | Add a new pet to the store
+[**delete_pet**](PetApi.md#delete_pet) | **DELETE** /pet/{petId} | Deletes a pet
+[**find_pets_by_status**](PetApi.md#find_pets_by_status) | **GET** /pet/findByStatus | Finds Pets by status
+[**find_pets_by_tags**](PetApi.md#find_pets_by_tags) | **GET** /pet/findByTags | Finds Pets by tags
+[**get_pet_by_id**](PetApi.md#get_pet_by_id) | **GET** /pet/{petId} | Find pet by ID
+[**update_pet**](PetApi.md#update_pet) | **PUT** /pet | Update an existing pet
+[**update_pet_with_form**](PetApi.md#update_pet_with_form) | **POST** /pet/{petId} | Updates a pet in the store with form data
+[**upload_file_with_required_file**](PetApi.md#upload_file_with_required_file) | **POST** /fake/{petId}/uploadImageWithRequiredFile | uploads an image (required)
+[**upload_image**](PetApi.md#upload_image) | **POST** /pet/{petId}/uploadImage | uploads an image
+
+# **add_pet**
+> add_pet(pet)
+
+Add a new pet to the store
+
+Add a new pet to the store
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.pet import Pet
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure HTTP message signature: http_signature_test
+# The HTTP Signature Header mechanism that can be used by a client to
+# authenticate the sender of a message and ensure that particular headers
+# have not been modified in transit.
+#
+# You can specify the signing key-id, private key path, signing scheme,
+# signing algorithm, list of signed headers and signature max validity.
+# The 'key_id' parameter is an opaque string that the API server can use
+# to lookup the client and validate the signature.
+# The 'private_key_path' parameter should be the path to a file that
+# contains a DER or base-64 encoded private key.
+# The 'private_key_passphrase' parameter is optional. Set the passphrase
+# if the private key is encrypted.
+# The 'signed_headers' parameter is used to specify the list of
+# HTTP headers included when generating the signature for the message.
+# You can specify HTTP headers that you want to protect with a cryptographic
+# signature. Note that proxies may add, modify or remove HTTP headers
+# for legitimate reasons, so you should only add headers that you know
+# will not be modified. For example, if you want to protect the HTTP request
+# body, you can specify the Digest header. In that case, the client calculates
+# the digest of the HTTP request body and includes the digest in the message
+# signature.
+# The 'signature_max_validity' parameter is optional. It is configured as a
+# duration to express when the signature ceases to be valid. The client calculates
+# the expiration date every time it generates the cryptographic signature
+# of an HTTP request. The API server may have its own security policy
+# that controls the maximum validity of the signature. The client max validity
+# must be lower than the server max validity.
+# The time on the client and server must be synchronized, otherwise the
+# server may reject the client signature.
+#
+# The client must use a combination of private key, signing scheme,
+# signing algorithm and hash algorithm that matches the security policy of
+# the API server.
+#
+# See petstore_api.signing for a list of all supported parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2",
+    signing_info = petstore_api.signing.HttpSigningConfiguration(
+        key_id = 'my-key-id',
+        private_key_path = 'private_key.pem',
+        private_key_passphrase = 'YOUR_PASSPHRASE',
+        signing_scheme = petstore_api.signing.SCHEME_HS2019,
+        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
+        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
+        signed_headers = [
+                            petstore_api.signing.HEADER_REQUEST_TARGET,
+                            petstore_api.signing.HEADER_CREATED,
+                            petstore_api.signing.HEADER_EXPIRES,
+                            petstore_api.signing.HEADER_HOST,
+                            petstore_api.signing.HEADER_DATE,
+                            petstore_api.signing.HEADER_DIGEST,
+                            'Content-Type',
+                            'Content-Length',
+                            'User-Agent'
+                         ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Pet(
+        id=1,
+        category=Category(
+            id=1,
+            name="default-name",
+        ),
+        name="doggie",
+        photo_urls=[
+            "photo_urls_example",
+        ],
+        tags=[
+            Tag(
+                id=1,
+                name="name_example",
+            ),
+        ],
+        status="available",
+    )
+    try:
+        # Add a new pet to the store
+        api_response = api_instance.add_pet(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->add_pet: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, SchemaForRequestBodyApplicationXml] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+host_index | typing.Optional[int] | default is None | Allows one to select a different host
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Pet**](Pet.md) |  | 
+
+
+#### SchemaForRequestBodyApplicationXml
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Pet**](Pet.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | Ok 
+405 | ApiResponseFor405 | Invalid input 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor405
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test), [petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **delete_pet**
+> delete_pet(pet_id)
+
+Deletes a pet
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'petId': 1,
+    }
+    header_params = {
+    }
+    try:
+        # Deletes a pet
+        api_response = api_instance.delete_pet(
+            path_params=path_params,
+            header_params=header_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->delete_pet: %s\n" % e)
+
+    # example passing only optional values
+    path_params = {
+        'petId': 1,
+    }
+    header_params = {
+        'api_key': "api_key_example",
+    }
+    try:
+        # Deletes a pet
+        api_response = api_instance.delete_pet(
+            path_params=path_params,
+            header_params=header_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->delete_pet: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+header_params | RequestHeaderParams | |
+path_params | RequestPathParams | |
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### header_params
+#### RequestHeaderParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+api_key | ApiKeySchema | | optional
+
+#### ApiKeySchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+petId | PetIdSchema | | 
+
+#### PetIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid pet value 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **find_pets_by_status**
+> [Pet] find_pets_by_status(status)
+
+Finds Pets by status
+
+Multiple status values can be provided with comma separated strings
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.pet import Pet
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure HTTP message signature: http_signature_test
+# The HTTP Signature Header mechanism that can be used by a client to
+# authenticate the sender of a message and ensure that particular headers
+# have not been modified in transit.
+#
+# You can specify the signing key-id, private key path, signing scheme,
+# signing algorithm, list of signed headers and signature max validity.
+# The 'key_id' parameter is an opaque string that the API server can use
+# to lookup the client and validate the signature.
+# The 'private_key_path' parameter should be the path to a file that
+# contains a DER or base-64 encoded private key.
+# The 'private_key_passphrase' parameter is optional. Set the passphrase
+# if the private key is encrypted.
+# The 'signed_headers' parameter is used to specify the list of
+# HTTP headers included when generating the signature for the message.
+# You can specify HTTP headers that you want to protect with a cryptographic
+# signature. Note that proxies may add, modify or remove HTTP headers
+# for legitimate reasons, so you should only add headers that you know
+# will not be modified. For example, if you want to protect the HTTP request
+# body, you can specify the Digest header. In that case, the client calculates
+# the digest of the HTTP request body and includes the digest in the message
+# signature.
+# The 'signature_max_validity' parameter is optional. It is configured as a
+# duration to express when the signature ceases to be valid. The client calculates
+# the expiration date every time it generates the cryptographic signature
+# of an HTTP request. The API server may have its own security policy
+# that controls the maximum validity of the signature. The client max validity
+# must be lower than the server max validity.
+# The time on the client and server must be synchronized, otherwise the
+# server may reject the client signature.
+#
+# The client must use a combination of private key, signing scheme,
+# signing algorithm and hash algorithm that matches the security policy of
+# the API server.
+#
+# See petstore_api.signing for a list of all supported parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2",
+    signing_info = petstore_api.signing.HttpSigningConfiguration(
+        key_id = 'my-key-id',
+        private_key_path = 'private_key.pem',
+        private_key_passphrase = 'YOUR_PASSPHRASE',
+        signing_scheme = petstore_api.signing.SCHEME_HS2019,
+        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
+        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
+        signed_headers = [
+                            petstore_api.signing.HEADER_REQUEST_TARGET,
+                            petstore_api.signing.HEADER_CREATED,
+                            petstore_api.signing.HEADER_EXPIRES,
+                            petstore_api.signing.HEADER_HOST,
+                            petstore_api.signing.HEADER_DATE,
+                            petstore_api.signing.HEADER_DIGEST,
+                            'Content-Type',
+                            'Content-Length',
+                            'User-Agent'
+                         ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'status': [
+        "available",
+    ],
+    }
+    try:
+        # Finds Pets by status
+        api_response = api_instance.find_pets_by_status(
+            query_params=query_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->find_pets_by_status: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query_params | RequestQueryParams | |
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+status | StatusSchema | | 
+
+
+#### StatusSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid status value 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationXml
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[Pet]** |  | 
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[Pet]** |  | 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+[**[Pet]**](Pet.md)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test), [petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **find_pets_by_tags**
+> [Pet] find_pets_by_tags(tags)
+
+Finds Pets by tags
+
+Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.pet import Pet
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure HTTP message signature: http_signature_test
+# The HTTP Signature Header mechanism that can be used by a client to
+# authenticate the sender of a message and ensure that particular headers
+# have not been modified in transit.
+#
+# You can specify the signing key-id, private key path, signing scheme,
+# signing algorithm, list of signed headers and signature max validity.
+# The 'key_id' parameter is an opaque string that the API server can use
+# to lookup the client and validate the signature.
+# The 'private_key_path' parameter should be the path to a file that
+# contains a DER or base-64 encoded private key.
+# The 'private_key_passphrase' parameter is optional. Set the passphrase
+# if the private key is encrypted.
+# The 'signed_headers' parameter is used to specify the list of
+# HTTP headers included when generating the signature for the message.
+# You can specify HTTP headers that you want to protect with a cryptographic
+# signature. Note that proxies may add, modify or remove HTTP headers
+# for legitimate reasons, so you should only add headers that you know
+# will not be modified. For example, if you want to protect the HTTP request
+# body, you can specify the Digest header. In that case, the client calculates
+# the digest of the HTTP request body and includes the digest in the message
+# signature.
+# The 'signature_max_validity' parameter is optional. It is configured as a
+# duration to express when the signature ceases to be valid. The client calculates
+# the expiration date every time it generates the cryptographic signature
+# of an HTTP request. The API server may have its own security policy
+# that controls the maximum validity of the signature. The client max validity
+# must be lower than the server max validity.
+# The time on the client and server must be synchronized, otherwise the
+# server may reject the client signature.
+#
+# The client must use a combination of private key, signing scheme,
+# signing algorithm and hash algorithm that matches the security policy of
+# the API server.
+#
+# See petstore_api.signing for a list of all supported parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2",
+    signing_info = petstore_api.signing.HttpSigningConfiguration(
+        key_id = 'my-key-id',
+        private_key_path = 'private_key.pem',
+        private_key_passphrase = 'YOUR_PASSPHRASE',
+        signing_scheme = petstore_api.signing.SCHEME_HS2019,
+        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
+        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
+        signed_headers = [
+                            petstore_api.signing.HEADER_REQUEST_TARGET,
+                            petstore_api.signing.HEADER_CREATED,
+                            petstore_api.signing.HEADER_EXPIRES,
+                            petstore_api.signing.HEADER_HOST,
+                            petstore_api.signing.HEADER_DATE,
+                            petstore_api.signing.HEADER_DIGEST,
+                            'Content-Type',
+                            'Content-Length',
+                            'User-Agent'
+                         ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'tags': [
+        "tags_example",
+    ],
+    }
+    try:
+        # Finds Pets by tags
+        api_response = api_instance.find_pets_by_tags(
+            query_params=query_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->find_pets_by_tags: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query_params | RequestQueryParams | |
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+tags | TagsSchema | | 
+
+
+#### TagsSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[str]** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid tag value 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationXml
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[Pet]** |  | 
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[Pet]** |  | 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+[**[Pet]**](Pet.md)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test), [petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **get_pet_by_id**
+> Pet get_pet_by_id(pet_id)
+
+Find pet by ID
+
+Returns a single pet
+
+### Example
+
+* Api Key Authentication (api_key):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.pet import Pet
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure API key authorization: api_key
+configuration.api_key['api_key'] = 'YOUR_API_KEY'
+
+# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
+# configuration.api_key_prefix['api_key'] = 'Bearer'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'petId': 1,
+    }
+    try:
+        # Find pet by ID
+        api_response = api_instance.get_pet_by_id(
+            path_params=path_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->get_pet_by_id: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+path_params | RequestPathParams | |
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+petId | PetIdSchema | | 
+
+#### PetIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid ID supplied 
+404 | ApiResponseFor404 | Pet not found 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationXml
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Pet**](Pet.md) |  | 
+
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Pet**](Pet.md) |  | 
+
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+[**Pet**](Pet.md)
+
+### Authorization
+
+[api_key](../README.md#api_key)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **update_pet**
+> update_pet(pet)
+
+Update an existing pet
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.pet import Pet
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure HTTP message signature: http_signature_test
+# The HTTP Signature Header mechanism that can be used by a client to
+# authenticate the sender of a message and ensure that particular headers
+# have not been modified in transit.
+#
+# You can specify the signing key-id, private key path, signing scheme,
+# signing algorithm, list of signed headers and signature max validity.
+# The 'key_id' parameter is an opaque string that the API server can use
+# to lookup the client and validate the signature.
+# The 'private_key_path' parameter should be the path to a file that
+# contains a DER or base-64 encoded private key.
+# The 'private_key_passphrase' parameter is optional. Set the passphrase
+# if the private key is encrypted.
+# The 'signed_headers' parameter is used to specify the list of
+# HTTP headers included when generating the signature for the message.
+# You can specify HTTP headers that you want to protect with a cryptographic
+# signature. Note that proxies may add, modify or remove HTTP headers
+# for legitimate reasons, so you should only add headers that you know
+# will not be modified. For example, if you want to protect the HTTP request
+# body, you can specify the Digest header. In that case, the client calculates
+# the digest of the HTTP request body and includes the digest in the message
+# signature.
+# The 'signature_max_validity' parameter is optional. It is configured as a
+# duration to express when the signature ceases to be valid. The client calculates
+# the expiration date every time it generates the cryptographic signature
+# of an HTTP request. The API server may have its own security policy
+# that controls the maximum validity of the signature. The client max validity
+# must be lower than the server max validity.
+# The time on the client and server must be synchronized, otherwise the
+# server may reject the client signature.
+#
+# The client must use a combination of private key, signing scheme,
+# signing algorithm and hash algorithm that matches the security policy of
+# the API server.
+#
+# See petstore_api.signing for a list of all supported parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2",
+    signing_info = petstore_api.signing.HttpSigningConfiguration(
+        key_id = 'my-key-id',
+        private_key_path = 'private_key.pem',
+        private_key_passphrase = 'YOUR_PASSPHRASE',
+        signing_scheme = petstore_api.signing.SCHEME_HS2019,
+        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
+        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
+        signed_headers = [
+                            petstore_api.signing.HEADER_REQUEST_TARGET,
+                            petstore_api.signing.HEADER_CREATED,
+                            petstore_api.signing.HEADER_EXPIRES,
+                            petstore_api.signing.HEADER_HOST,
+                            petstore_api.signing.HEADER_DATE,
+                            petstore_api.signing.HEADER_DIGEST,
+                            'Content-Type',
+                            'Content-Length',
+                            'User-Agent'
+                         ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Pet(
+        id=1,
+        category=Category(
+            id=1,
+            name="default-name",
+        ),
+        name="doggie",
+        photo_urls=[
+            "photo_urls_example",
+        ],
+        tags=[
+            Tag(
+                id=1,
+                name="name_example",
+            ),
+        ],
+        status="available",
+    )
+    try:
+        # Update an existing pet
+        api_response = api_instance.update_pet(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->update_pet: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson, SchemaForRequestBodyApplicationXml] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+host_index | typing.Optional[int] | default is None | Allows one to select a different host
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Pet**](Pet.md) |  | 
+
+
+#### SchemaForRequestBodyApplicationXml
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Pet**](Pet.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid ID supplied 
+404 | ApiResponseFor404 | Pet not found 
+405 | ApiResponseFor405 | Validation exception 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor405
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+[http_signature_test](../README.md#http_signature_test), [petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **update_pet_with_form**
+> update_pet_with_form(pet_id)
+
+Updates a pet in the store with form data
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'petId': 1,
+    }
+    try:
+        # Updates a pet in the store with form data
+        api_response = api_instance.update_pet_with_form(
+            path_params=path_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->update_pet_with_form: %s\n" % e)
+
+    # example passing only optional values
+    path_params = {
+        'petId': 1,
+    }
+    body = dict(
+        name="name_example",
+        status="status_example",
+    )
+    try:
+        # Updates a pet in the store with form data
+        api_response = api_instance.update_pet_with_form(
+            path_params=path_params,
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->update_pet_with_form: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] | optional, default is unset |
+path_params | RequestPathParams | |
+content_type | str | optional, default is 'application/x-www-form-urlencoded' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationXWwwFormUrlencoded
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **str** | Updated name of the pet | [optional] 
+**status** | **str** | Updated status of the pet | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+petId | PetIdSchema | | 
+
+#### PetIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+405 | ApiResponseFor405 | Invalid input 
+
+#### ApiResponseFor405
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **upload_file_with_required_file**
+> ApiResponse upload_file_with_required_file(pet_id)
+
+uploads an image (required)
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.api_response import ApiResponse
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'petId': 1,
+    }
+    try:
+        # uploads an image (required)
+        api_response = api_instance.upload_file_with_required_file(
+            path_params=path_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->upload_file_with_required_file: %s\n" % e)
+
+    # example passing only optional values
+    path_params = {
+        'petId': 1,
+    }
+    body = dict(
+        additional_metadata="additional_metadata_example",
+        required_file=open('/path/to/file', 'rb'),
+    )
+    try:
+        # uploads an image (required)
+        api_response = api_instance.upload_file_with_required_file(
+            path_params=path_params,
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->upload_file_with_required_file: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyMultipartFormData, Unset] | optional, default is unset |
+path_params | RequestPathParams | |
+content_type | str | optional, default is 'multipart/form-data' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyMultipartFormData
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**additionalMetadata** | **str** | Additional data to pass to server | [optional] 
+**requiredFile** | **file_type** | file to upload | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+petId | PetIdSchema | | 
+
+#### PetIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ApiResponse**](ApiResponse.md) |  | 
+
+
+
+[**ApiResponse**](ApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **upload_image**
+> ApiResponse upload_image(pet_id)
+
+uploads an image
+
+### Example
+
+* OAuth Authentication (petstore_auth):
+```python
+import petstore_api
+from petstore_api.api import pet_api
+from petstore_api.model.api_response import ApiResponse
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure OAuth2 access token for authorization: petstore_auth
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = pet_api.PetApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'petId': 1,
+    }
+    try:
+        # uploads an image
+        api_response = api_instance.upload_image(
+            path_params=path_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->upload_image: %s\n" % e)
+
+    # example passing only optional values
+    path_params = {
+        'petId': 1,
+    }
+    body = dict(
+        additional_metadata="additional_metadata_example",
+        file=open('/path/to/file', 'rb'),
+    )
+    try:
+        # uploads an image
+        api_response = api_instance.upload_image(
+            path_params=path_params,
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling PetApi->upload_image: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyMultipartFormData, Unset] | optional, default is unset |
+path_params | RequestPathParams | |
+content_type | str | optional, default is 'multipart/form-data' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyMultipartFormData
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**additionalMetadata** | **str** | Additional data to pass to server | [optional] 
+**file** | **file_type** | file to upload | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+petId | PetIdSchema | | 
+
+#### PetIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**ApiResponse**](ApiResponse.md) |  | 
+
+
+
+[**ApiResponse**](ApiResponse.md)
+
+### Authorization
+
+[petstore_auth](../README.md#petstore_auth)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Pig.md b/samples/openapi3/client/petstore/python-experimental/docs/Pig.md
new file mode 100644
index 00000000000..97259b026f9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Pig.md
@@ -0,0 +1,9 @@
+# Pig
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Player.md b/samples/openapi3/client/petstore/python-experimental/docs/Player.md
new file mode 100644
index 00000000000..2daf47240c7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Player.md
@@ -0,0 +1,13 @@
+# Player
+
+a model that includes a self reference this forces properties and additionalProperties to be lazy loaded in python models because the Player class has not fully loaded when defining properties
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**name** | **str** |  | [optional] 
+**enemyPlayer** | [**Player**](Player.md) |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Quadrilateral.md b/samples/openapi3/client/petstore/python-experimental/docs/Quadrilateral.md
new file mode 100644
index 00000000000..e840c9b8fd0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Quadrilateral.md
@@ -0,0 +1,9 @@
+# Quadrilateral
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/QuadrilateralInterface.md b/samples/openapi3/client/petstore/python-experimental/docs/QuadrilateralInterface.md
new file mode 100644
index 00000000000..ee7c4db4ba4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/QuadrilateralInterface.md
@@ -0,0 +1,11 @@
+# QuadrilateralInterface
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**shapeType** | **str** |  | 
+**quadrilateralType** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ReadOnlyFirst.md b/samples/openapi3/client/petstore/python-experimental/docs/ReadOnlyFirst.md
new file mode 100644
index 00000000000..a6c2e4524b7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ReadOnlyFirst.md
@@ -0,0 +1,11 @@
+# ReadOnlyFirst
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**bar** | **str** |  | [optional] [readonly] 
+**baz** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ScaleneTriangle.md b/samples/openapi3/client/petstore/python-experimental/docs/ScaleneTriangle.md
new file mode 100644
index 00000000000..941e9e63117
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ScaleneTriangle.md
@@ -0,0 +1,9 @@
+# ScaleneTriangle
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ScaleneTriangleAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/ScaleneTriangleAllOf.md
new file mode 100644
index 00000000000..3ac4ed16125
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ScaleneTriangleAllOf.md
@@ -0,0 +1,10 @@
+# ScaleneTriangleAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**triangleType** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Shape.md b/samples/openapi3/client/petstore/python-experimental/docs/Shape.md
new file mode 100644
index 00000000000..798438fbd2b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Shape.md
@@ -0,0 +1,9 @@
+# Shape
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/ShapeOrNull.md b/samples/openapi3/client/petstore/python-experimental/docs/ShapeOrNull.md
new file mode 100644
index 00000000000..17fa7c50577
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/ShapeOrNull.md
@@ -0,0 +1,11 @@
+# ShapeOrNull
+
+The value may be a shape or the 'null' value. This is introduced in OAS schema >= 3.1.
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/SimpleQuadrilateral.md b/samples/openapi3/client/petstore/python-experimental/docs/SimpleQuadrilateral.md
new file mode 100644
index 00000000000..d9ce2f02b01
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/SimpleQuadrilateral.md
@@ -0,0 +1,9 @@
+# SimpleQuadrilateral
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/SimpleQuadrilateralAllOf.md b/samples/openapi3/client/petstore/python-experimental/docs/SimpleQuadrilateralAllOf.md
new file mode 100644
index 00000000000..e8bf2861915
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/SimpleQuadrilateralAllOf.md
@@ -0,0 +1,10 @@
+# SimpleQuadrilateralAllOf
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**quadrilateralType** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/SomeObject.md b/samples/openapi3/client/petstore/python-experimental/docs/SomeObject.md
new file mode 100644
index 00000000000..55a308e4f86
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/SomeObject.md
@@ -0,0 +1,9 @@
+# SomeObject
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/SpecialModelName.md b/samples/openapi3/client/petstore/python-experimental/docs/SpecialModelName.md
new file mode 100644
index 00000000000..8c02dca9ab3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/SpecialModelName.md
@@ -0,0 +1,12 @@
+# SpecialModelName
+
+model with an invalid class name for python
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**a** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/StoreApi.md b/samples/openapi3/client/petstore/python-experimental/docs/StoreApi.md
new file mode 100644
index 00000000000..80f9a368f5f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/StoreApi.md
@@ -0,0 +1,391 @@
+# petstore_api.StoreApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**delete_order**](StoreApi.md#delete_order) | **DELETE** /store/order/{order_id} | Delete purchase order by ID
+[**get_inventory**](StoreApi.md#get_inventory) | **GET** /store/inventory | Returns pet inventories by status
+[**get_order_by_id**](StoreApi.md#get_order_by_id) | **GET** /store/order/{order_id} | Find purchase order by ID
+[**place_order**](StoreApi.md#place_order) | **POST** /store/order | Place an order for a pet
+
+# **delete_order**
+> delete_order(order_id)
+
+Delete purchase order by ID
+
+For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import store_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = store_api.StoreApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'order_id': "order_id_example",
+    }
+    try:
+        # Delete purchase order by ID
+        api_response = api_instance.delete_order(
+            path_params=path_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling StoreApi->delete_order: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+path_params | RequestPathParams | |
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+order_id | OrderIdSchema | | 
+
+#### OrderIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid ID supplied 
+404 | ApiResponseFor404 | Order not found 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **get_inventory**
+> {str: (int,)} get_inventory()
+
+Returns pet inventories by status
+
+Returns a map of status codes to quantities
+
+### Example
+
+* Api Key Authentication (api_key):
+```python
+import petstore_api
+from petstore_api.api import store_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# The client must configure the authentication and authorization parameters
+# in accordance with the API server security policy.
+# Examples for each auth method are provided below, use the example that
+# satisfies your auth use case.
+
+# Configure API key authorization: api_key
+configuration.api_key['api_key'] = 'YOUR_API_KEY'
+
+# Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
+# configuration.api_key_prefix['api_key'] = 'Bearer'
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = store_api.StoreApi(api_client)
+
+    # example, this endpoint has no required or optional parameters
+    try:
+        # Returns pet inventories by status
+        api_response = api_instance.get_inventory()
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling StoreApi->get_inventory: %s\n" % e)
+```
+### Parameters
+This endpoint does not need any parameter.
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **int** | any string name can be used but the value must be the correct type | [optional]
+
+
+**{str: (int,)}**
+
+### Authorization
+
+[api_key](../README.md#api_key)
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **get_order_by_id**
+> Order get_order_by_id(order_id)
+
+Find purchase order by ID
+
+For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import store_api
+from petstore_api.model.order import Order
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = store_api.StoreApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'order_id': 1,
+    }
+    try:
+        # Find purchase order by ID
+        api_response = api_instance.get_order_by_id(
+            path_params=path_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling StoreApi->get_order_by_id: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+path_params | RequestPathParams | |
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+order_id | OrderIdSchema | | 
+
+#### OrderIdSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid ID supplied 
+404 | ApiResponseFor404 | Order not found 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationXml
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Order**](Order.md) |  | 
+
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Order**](Order.md) |  | 
+
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+[**Order**](Order.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **place_order**
+> Order place_order(order)
+
+Place an order for a pet
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import store_api
+from petstore_api.model.order import Order
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = store_api.StoreApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = Order(
+        id=1,
+        pet_id=1,
+        quantity=1,
+        ship_date=isoparse('2020-02-02T20:20:20.000222Z'),
+        status="placed",
+        complete=False,
+    )
+    try:
+        # Place an order for a pet
+        api_response = api_instance.place_order(
+            body=body,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling StoreApi->place_order: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Order**](Order.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid Order 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationXml
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Order**](Order.md) |  | 
+
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**Order**](Order.md) |  | 
+
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+[**Order**](Order.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/String.md b/samples/openapi3/client/petstore/python-experimental/docs/String.md
new file mode 100644
index 00000000000..ca058fd710b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/String.md
@@ -0,0 +1,8 @@
+# String
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/StringBooleanMap.md b/samples/openapi3/client/petstore/python-experimental/docs/StringBooleanMap.md
new file mode 100644
index 00000000000..89b85004e97
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/StringBooleanMap.md
@@ -0,0 +1,9 @@
+# StringBooleanMap
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/StringEnum.md b/samples/openapi3/client/petstore/python-experimental/docs/StringEnum.md
new file mode 100644
index 00000000000..bf610d10285
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/StringEnum.md
@@ -0,0 +1,10 @@
+# StringEnum
+
+Type | Description | Notes
+------------- | ------------- | -------------
+typing.Union[str, None, ] | |  must be one of ["placed", "approved", "delivered", "single quoted", '''multiple
+lines''', '''double quote 
+ with newline''', ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/StringEnumWithDefaultValue.md b/samples/openapi3/client/petstore/python-experimental/docs/StringEnumWithDefaultValue.md
new file mode 100644
index 00000000000..08a337a5264
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/StringEnumWithDefaultValue.md
@@ -0,0 +1,8 @@
+# StringEnumWithDefaultValue
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | defaults to "placed",  must be one of ["placed", "approved", "delivered", ]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/StringWithValidation.md b/samples/openapi3/client/petstore/python-experimental/docs/StringWithValidation.md
new file mode 100644
index 00000000000..870752b1df8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/StringWithValidation.md
@@ -0,0 +1,8 @@
+# StringWithValidation
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Tag.md b/samples/openapi3/client/petstore/python-experimental/docs/Tag.md
new file mode 100644
index 00000000000..42cf6ecbc85
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Tag.md
@@ -0,0 +1,11 @@
+# Tag
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **int** |  | [optional] 
+**name** | **str** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Triangle.md b/samples/openapi3/client/petstore/python-experimental/docs/Triangle.md
new file mode 100644
index 00000000000..0820ec390f0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Triangle.md
@@ -0,0 +1,9 @@
+# Triangle
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/TriangleInterface.md b/samples/openapi3/client/petstore/python-experimental/docs/TriangleInterface.md
new file mode 100644
index 00000000000..11c7c8e4541
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/TriangleInterface.md
@@ -0,0 +1,11 @@
+# TriangleInterface
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**shapeType** | **str** |  | 
+**triangleType** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/User.md b/samples/openapi3/client/petstore/python-experimental/docs/User.md
new file mode 100644
index 00000000000..cfff38a6269
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/User.md
@@ -0,0 +1,21 @@
+# User
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **int** |  | [optional] 
+**username** | **str** |  | [optional] 
+**firstName** | **str** |  | [optional] 
+**lastName** | **str** |  | [optional] 
+**email** | **str** |  | [optional] 
+**password** | **str** |  | [optional] 
+**phone** | **str** |  | [optional] 
+**userStatus** | **int** | User Status | [optional] 
+**objectWithNoDeclaredProps** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}** | test code generation for objects Value must be a map of strings to values. It cannot be the &#x27;null&#x27; value. | [optional] 
+**objectWithNoDeclaredPropsNullable** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}, none_type** | test code generation for nullable objects. Value must be a map of strings to values or the &#x27;null&#x27; value. | [optional] 
+**anyTypeProp** | **bool, date, datetime, dict, float, int, list, str, none_type** | test code generation for any type Here the &#x27;type&#x27; attribute is not specified, which means the value can be anything, including the null value, string, number, boolean, array or object. See https://github.com/OAI/OpenAPI-Specification/issues/1389 | [optional] 
+**anyTypePropNullable** | **bool, date, datetime, dict, float, int, list, str, none_type** | test code generation for any type Here the &#x27;type&#x27; attribute is not specified, which means the value can be anything, including the null value, string, number, boolean, array or object. The &#x27;nullable&#x27; attribute does not change the allowed values. | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/UserApi.md b/samples/openapi3/client/petstore/python-experimental/docs/UserApi.md
new file mode 100644
index 00000000000..0e77fad4125
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/UserApi.md
@@ -0,0 +1,784 @@
+# petstore_api.UserApi
+
+All URIs are relative to *http://petstore.swagger.io:80/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**create_user**](UserApi.md#create_user) | **POST** /user | Create user
+[**create_users_with_array_input**](UserApi.md#create_users_with_array_input) | **POST** /user/createWithArray | Creates list of users with given input array
+[**create_users_with_list_input**](UserApi.md#create_users_with_list_input) | **POST** /user/createWithList | Creates list of users with given input array
+[**delete_user**](UserApi.md#delete_user) | **DELETE** /user/{username} | Delete user
+[**get_user_by_name**](UserApi.md#get_user_by_name) | **GET** /user/{username} | Get user by user name
+[**login_user**](UserApi.md#login_user) | **GET** /user/login | Logs user into the system
+[**logout_user**](UserApi.md#logout_user) | **GET** /user/logout | Logs out current logged in user session
+[**update_user**](UserApi.md#update_user) | **PUT** /user/{username} | Updated user
+
+# **create_user**
+> create_user(user)
+
+Create user
+
+This can only be done by the logged in user.
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from petstore_api.model.user import User
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = User(
+        id=1,
+        username="username_example",
+        first_name="first_name_example",
+        last_name="last_name_example",
+        email="email_example",
+        password="password_example",
+        phone="phone_example",
+        user_status=1,
+        object_with_no_declared_props=dict(),
+        object_with_no_declared_props_nullable=dict(),
+        any_type_prop=None,
+        any_type_prop_nullable=None,
+    )
+    try:
+        # Create user
+        api_response = api_instance.create_user(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->create_user: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**User**](User.md) |  | 
+
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+default | ApiResponseForDefault | successful operation 
+
+#### ApiResponseForDefault
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **create_users_with_array_input**
+> create_users_with_array_input(user)
+
+Creates list of users with given input array
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from petstore_api.model.user import User
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = [
+        User(
+            id=1,
+            username="username_example",
+            first_name="first_name_example",
+            last_name="last_name_example",
+            email="email_example",
+            password="password_example",
+            phone="phone_example",
+            user_status=1,
+            object_with_no_declared_props=dict(),
+            object_with_no_declared_props_nullable=dict(),
+            any_type_prop=None,
+            any_type_prop_nullable=None,
+        ),
+    ]
+    try:
+        # Creates list of users with given input array
+        api_response = api_instance.create_users_with_array_input(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->create_users_with_array_input: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[User]** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+default | ApiResponseForDefault | successful operation 
+
+#### ApiResponseForDefault
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **create_users_with_list_input**
+> create_users_with_list_input(user)
+
+Creates list of users with given input array
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from petstore_api.model.user import User
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    body = [
+        User(
+            id=1,
+            username="username_example",
+            first_name="first_name_example",
+            last_name="last_name_example",
+            email="email_example",
+            password="password_example",
+            phone="phone_example",
+            user_status=1,
+            object_with_no_declared_props=dict(),
+            object_with_no_declared_props_nullable=dict(),
+            any_type_prop=None,
+            any_type_prop_nullable=None,
+        ),
+    ]
+    try:
+        # Creates list of users with given input array
+        api_response = api_instance.create_users_with_list_input(
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->create_users_with_list_input: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**[User]** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+default | ApiResponseForDefault | successful operation 
+
+#### ApiResponseForDefault
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **delete_user**
+> delete_user(username)
+
+Delete user
+
+This can only be done by the logged in user.
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'username': "username_example",
+    }
+    try:
+        # Delete user
+        api_response = api_instance.delete_user(
+            path_params=path_params,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->delete_user: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+path_params | RequestPathParams | |
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+username | UsernameSchema | | 
+
+#### UsernameSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid username supplied 
+404 | ApiResponseFor404 | User not found 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **get_user_by_name**
+> User get_user_by_name(username)
+
+Get user by user name
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from petstore_api.model.user import User
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'username': "username_example",
+    }
+    try:
+        # Get user by user name
+        api_response = api_instance.get_user_by_name(
+            path_params=path_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->get_user_by_name: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+path_params | RequestPathParams | |
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+username | UsernameSchema | | 
+
+#### UsernameSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid username supplied 
+404 | ApiResponseFor404 | User not found 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | Unset | headers were not defined |
+
+#### SchemaFor200ResponseBodyApplicationXml
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**User**](User.md) |  | 
+
+
+#### SchemaFor200ResponseBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**User**](User.md) |  | 
+
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+[**User**](User.md)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **login_user**
+> str login_user(usernamepassword)
+
+Logs user into the system
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    query_params = {
+        'username': "username_example",
+        'password': "password_example",
+    }
+    try:
+        # Logs user into the system
+        api_response = api_instance.login_user(
+            query_params=query_params,
+        )
+        pprint(api_response)
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->login_user: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+query_params | RequestQueryParams | |
+accept_content_types | typing.Tuple[str] | default is ('application/xml', 'application/json', ) | Tells the server the content type(s) that are accepted by the client
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### query_params
+#### RequestQueryParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+username | UsernameSchema | | 
+password | PasswordSchema | | 
+
+
+#### UsernameSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### PasswordSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+200 | ApiResponseFor200 | successful operation 
+400 | ApiResponseFor400 | Invalid username/password supplied 
+
+#### ApiResponseFor200
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | typing.Union[SchemaFor200ResponseBodyApplicationXml, SchemaFor200ResponseBodyApplicationJson, ] |  |
+headers | ResponseHeadersFor200 |  |
+
+#### SchemaFor200ResponseBodyApplicationXml
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+#### SchemaFor200ResponseBodyApplicationJson
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+#### ResponseHeadersFor200
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+X-Rate-Limit | XRateLimitSchema | | optional
+X-Expires-After | XExpiresAfterSchema | | optional
+
+#### XRateLimitSchema
+
+calls per hour allowed by the user
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**int** | calls per hour allowed by the user | 
+
+#### XExpiresAfterSchema
+
+date in UTC when token expires
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**datetime** | date in UTC when token expires | 
+
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+**str**
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **logout_user**
+> logout_user()
+
+Logs out current logged in user session
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example, this endpoint has no required or optional parameters
+    try:
+        # Logs out current logged in user session
+        api_response = api_instance.logout_user()
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->logout_user: %s\n" % e)
+```
+### Parameters
+This endpoint does not need any parameter.
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+default | ApiResponseForDefault | successful operation 
+
+#### ApiResponseForDefault
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
+# **update_user**
+> update_user(usernameuser)
+
+Updated user
+
+This can only be done by the logged in user.
+
+### Example
+
+```python
+import petstore_api
+from petstore_api.api import user_api
+from petstore_api.model.user import User
+from pprint import pprint
+# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
+# See configuration.py for a list of all supported configuration parameters.
+configuration = petstore_api.Configuration(
+    host = "http://petstore.swagger.io:80/v2"
+)
+
+# Enter a context with an instance of the API client
+with petstore_api.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = user_api.UserApi(api_client)
+
+    # example passing only required values which don't have defaults set
+    path_params = {
+        'username': "username_example",
+    }
+    body = User(
+        id=1,
+        username="username_example",
+        first_name="first_name_example",
+        last_name="last_name_example",
+        email="email_example",
+        password="password_example",
+        phone="phone_example",
+        user_status=1,
+        object_with_no_declared_props=dict(),
+        object_with_no_declared_props_nullable=dict(),
+        any_type_prop=None,
+        any_type_prop_nullable=None,
+    )
+    try:
+        # Updated user
+        api_response = api_instance.update_user(
+            path_params=path_params,
+            body=body,
+        )
+    except petstore_api.ApiException as e:
+        print("Exception when calling UserApi->update_user: %s\n" % e)
+```
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+body | typing.Union[SchemaForRequestBodyApplicationJson] | required |
+path_params | RequestPathParams | |
+content_type | str | optional, default is 'application/json' | Selects the schema and serialization of the request body
+stream | bool | default is False | if True then the response.content will be streamed and loaded from a file like object. When downloading a file, set this to True to force the code to deserialize the content to a FileSchema file
+timeout | typing.Optional[typing.Union[int, typing.Tuple]] | default is None | the timeout used by the rest client
+skip_deserialization | bool | default is False | when True, headers and body will be unset and an instance of api_client.ApiResponseWithoutDeserialization will be returned
+
+### body
+
+#### SchemaForRequestBodyApplicationJson
+Type | Description  | Notes
+------------- | ------------- | -------------
+[**User**](User.md) |  | 
+
+
+### path_params
+#### RequestPathParams
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+username | UsernameSchema | | 
+
+#### UsernameSchema
+
+Type | Description | Notes
+------------- | ------------- | -------------
+**str** |  | 
+
+### Return Types, Responses
+
+Code | Class | Description
+------------- | ------------- | -------------
+n/a | api_client.ApiResponseWithoutDeserialization | When skip_deserialization is True this response is returned
+400 | ApiResponseFor400 | Invalid user supplied 
+404 | ApiResponseFor404 | User not found 
+
+#### ApiResponseFor400
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+#### ApiResponseFor404
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+response | urllib3.HTTPResponse | Raw response |
+body | Unset | body was not defined |
+headers | Unset | headers were not defined |
+
+
+void (empty response body)
+
+### Authorization
+
+No authorization required
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Whale.md b/samples/openapi3/client/petstore/python-experimental/docs/Whale.md
new file mode 100644
index 00000000000..f0b2dbc51ef
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Whale.md
@@ -0,0 +1,12 @@
+# Whale
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**hasBaleen** | **bool** |  | [optional] 
+**hasTeeth** | **bool** |  | [optional] 
+**className** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/docs/Zebra.md b/samples/openapi3/client/petstore/python-experimental/docs/Zebra.md
new file mode 100644
index 00000000000..ae12668a3a1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/docs/Zebra.md
@@ -0,0 +1,11 @@
+# Zebra
+
+#### Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**type** | **str** |  | [optional] 
+**className** | **str** |  | 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
diff --git a/samples/openapi3/client/petstore/python-experimental/git_push.sh b/samples/openapi3/client/petstore/python-experimental/git_push.sh
new file mode 100644
index 00000000000..ced3be2b0c7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/git_push.sh
@@ -0,0 +1,58 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-pestore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=`git remote`
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:${GIT_TOKEN}@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'
+
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/__init__.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/__init__.py
new file mode 100644
index 00000000000..26b0467759d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/__init__.py
@@ -0,0 +1,31 @@
+# coding: utf-8
+
+# flake8: noqa
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+__version__ = "1.0.0"
+
+# import ApiClient
+from petstore_api.api_client import ApiClient
+
+# import Configuration
+from petstore_api.configuration import Configuration
+from petstore_api.signing import HttpSigningConfiguration
+
+# import exceptions
+from petstore_api.exceptions import OpenApiException
+from petstore_api.exceptions import ApiAttributeError
+from petstore_api.exceptions import ApiTypeError
+from petstore_api.exceptions import ApiValueError
+from petstore_api.exceptions import ApiKeyError
+from petstore_api.exceptions import ApiException
+
+__import__('sys').setrecursionlimit(1234)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/__init__.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/__init__.py
new file mode 100644
index 00000000000..840e9f0cd90
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/__init__.py
@@ -0,0 +1,3 @@
+# do not import all apis into this module because that uses a lot of memory and stack frames
+# if you need the ability to import all apis from one package, import them with
+# from petstore_api.apis import AnotherFakeApi
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api.py
new file mode 100644
index 00000000000..a6e0483cf68
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api.py
@@ -0,0 +1,25 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.another_fake_api_endpoints.call_123_test_special_tags import Call123TestSpecialTags
+
+
+class AnotherFakeApi(
+    Call123TestSpecialTags,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api_endpoints/call_123_test_special_tags.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api_endpoints/call_123_test_special_tags.py
new file mode 100644
index 00000000000..eef7420a019
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/another_fake_api_endpoints/call_123_test_special_tags.py
@@ -0,0 +1,162 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.client import Client
+
+# body param
+SchemaForRequestBodyApplicationJson = Client
+
+
+request_body_client = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/another-fake/dummy'
+_method = 'PATCH'
+SchemaFor200ResponseBodyApplicationJson = Client
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class Call123TestSpecialTags(api_client.Api):
+
+    def call_123_test_special_tags(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        To test special tags
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_client.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api.py
new file mode 100644
index 00000000000..28b822701b6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api.py
@@ -0,0 +1,25 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.default_api_endpoints.foo_get import FooGet
+
+
+class DefaultApi(
+    FooGet,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api_endpoints/foo_get.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api_endpoints/foo_get.py
new file mode 100644
index 00000000000..c1a9e4213e0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/default_api_endpoints/foo_get.py
@@ -0,0 +1,139 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.inline_response_default import InlineResponseDefault
+
+_path = '/foo'
+_method = 'GET'
+SchemaFor0ResponseBodyApplicationJson = InlineResponseDefault
+
+
+@dataclass
+class ApiResponseForDefault(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor0ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_default = api_client.OpenApiResponse(
+    response_cls=ApiResponseForDefault,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor0ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    'default': _response_for_default,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class FooGet(api_client.Api):
+
+    def foo_get(
+        self: api_client.Api,
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseForDefault,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                default_response = _status_code_to_response.get('default')
+                if default_response:
+                    api_response = default_response.deserialize(response, self.api_client.configuration)
+                else:
+                    api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api.py
new file mode 100644
index 00000000000..7a81465ef0f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api.py
@@ -0,0 +1,73 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.fake_api_endpoints.additional_properties_with_array_of_enums import AdditionalPropertiesWithArrayOfEnums
+from petstore_api.api.fake_api_endpoints.array_model import ArrayModel
+from petstore_api.api.fake_api_endpoints.array_of_enums import ArrayOfEnums
+from petstore_api.api.fake_api_endpoints.body_with_file_schema import BodyWithFileSchema
+from petstore_api.api.fake_api_endpoints.body_with_query_params import BodyWithQueryParams
+from petstore_api.api.fake_api_endpoints.boolean import Boolean
+from petstore_api.api.fake_api_endpoints.case_sensitive_params import CaseSensitiveParams
+from petstore_api.api.fake_api_endpoints.client_model import ClientModel
+from petstore_api.api.fake_api_endpoints.composed_one_of_different_types import ComposedOneOfDifferentTypes
+from petstore_api.api.fake_api_endpoints.endpoint_parameters import EndpointParameters
+from petstore_api.api.fake_api_endpoints.enum_parameters import EnumParameters
+from petstore_api.api.fake_api_endpoints.fake_health_get import FakeHealthGet
+from petstore_api.api.fake_api_endpoints.group_parameters import GroupParameters
+from petstore_api.api.fake_api_endpoints.inline_additional_properties import InlineAdditionalProperties
+from petstore_api.api.fake_api_endpoints.json_form_data import JsonFormData
+from petstore_api.api.fake_api_endpoints.mammal import Mammal
+from petstore_api.api.fake_api_endpoints.number_with_validations import NumberWithValidations
+from petstore_api.api.fake_api_endpoints.object_model_with_ref_props import ObjectModelWithRefProps
+from petstore_api.api.fake_api_endpoints.parameter_collisions import ParameterCollisions
+from petstore_api.api.fake_api_endpoints.query_parameter_collection_format import QueryParameterCollectionFormat
+from petstore_api.api.fake_api_endpoints.string import String
+from petstore_api.api.fake_api_endpoints.string_enum import StringEnum
+from petstore_api.api.fake_api_endpoints.upload_download_file import UploadDownloadFile
+from petstore_api.api.fake_api_endpoints.upload_file import UploadFile
+from petstore_api.api.fake_api_endpoints.upload_files import UploadFiles
+
+
+class FakeApi(
+    AdditionalPropertiesWithArrayOfEnums,
+    ArrayModel,
+    ArrayOfEnums,
+    BodyWithFileSchema,
+    BodyWithQueryParams,
+    Boolean,
+    CaseSensitiveParams,
+    ClientModel,
+    ComposedOneOfDifferentTypes,
+    EndpointParameters,
+    EnumParameters,
+    FakeHealthGet,
+    GroupParameters,
+    InlineAdditionalProperties,
+    JsonFormData,
+    Mammal,
+    NumberWithValidations,
+    ObjectModelWithRefProps,
+    ParameterCollisions,
+    QueryParameterCollectionFormat,
+    String,
+    StringEnum,
+    UploadDownloadFile,
+    UploadFile,
+    UploadFiles,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/additional_properties_with_array_of_enums.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/additional_properties_with_array_of_enums.py
new file mode 100644
index 00000000000..1958cd47e5f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/additional_properties_with_array_of_enums.py
@@ -0,0 +1,159 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.additional_properties_with_array_of_enums import AdditionalPropertiesWithArrayOfEnums
+
+# body param
+SchemaForRequestBodyApplicationJson = AdditionalPropertiesWithArrayOfEnums
+
+
+request_body_additional_properties_with_array_of_enums = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/additional-properties-with-array-of-enums'
+_method = 'GET'
+SchemaFor200ResponseBodyApplicationJson = AdditionalPropertiesWithArrayOfEnums
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class AdditionalPropertiesWithArrayOfEnums(api_client.Api):
+
+    def additional_properties_with_array_of_enums(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Additional Properties with Array of Enums
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_additional_properties_with_array_of_enums.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/array_model.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/array_model.py
new file mode 100644
index 00000000000..466bb6bdeac
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/array_model.py
@@ -0,0 +1,158 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.animal_farm import AnimalFarm
+
+# body param
+SchemaForRequestBodyApplicationJson = AnimalFarm
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/arraymodel'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = AnimalFarm
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class ArrayModel(api_client.Api):
+
+    def array_model(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/array_of_enums.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/array_of_enums.py
new file mode 100644
index 00000000000..30eb23e2260
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/array_of_enums.py
@@ -0,0 +1,159 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.array_of_enums import ArrayOfEnums
+
+# body param
+SchemaForRequestBodyApplicationJson = ArrayOfEnums
+
+
+request_body_array_of_enums = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/array-of-enums'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = ArrayOfEnums
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class ArrayOfEnums(api_client.Api):
+
+    def array_of_enums(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Array of Enums
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_array_of_enums.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/body_with_file_schema.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/body_with_file_schema.py
new file mode 100644
index 00000000000..7d10197e7b9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/body_with_file_schema.py
@@ -0,0 +1,147 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.file_schema_test_class import FileSchemaTestClass
+
+# body param
+SchemaForRequestBodyApplicationJson = FileSchemaTestClass
+
+
+request_body_file_schema_test_class = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/fake/body-with-file-schema'
+_method = 'PUT'
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+
+
+class BodyWithFileSchema(api_client.Api):
+
+    def body_with_file_schema(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_file_schema_test_class.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/body_with_query_params.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/body_with_query_params.py
new file mode 100644
index 00000000000..185f737fd61
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/body_with_query_params.py
@@ -0,0 +1,187 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.user import User
+
+# query params
+QuerySchema = StrSchema
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'query': QuerySchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_query = api_client.QueryParameter(
+    name="query",
+    style=api_client.ParameterStyle.FORM,
+    schema=QuerySchema,
+    required=True,
+    explode=True,
+)
+# body param
+SchemaForRequestBodyApplicationJson = User
+
+
+request_body_user = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/fake/body-with-query-params'
+_method = 'PUT'
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+
+
+class BodyWithQueryParams(api_client.Api):
+
+    def body_with_query_params(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        query_params: RequestQueryParams = frozendict(),
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_query,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_user.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/boolean.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/boolean.py
new file mode 100644
index 00000000000..27c385cf6d8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/boolean.py
@@ -0,0 +1,156 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# body param
+SchemaForRequestBodyApplicationJson = BoolSchema
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/boolean'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = BoolSchema
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class Boolean(api_client.Api):
+
+    def boolean(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/case_sensitive_params.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/case_sensitive_params.py
new file mode 100644
index 00000000000..8d33047b77b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/case_sensitive_params.py
@@ -0,0 +1,175 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# query params
+SomeVarSchema = StrSchema
+SomeVarSchema = StrSchema
+SomeVarSchema = StrSchema
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'someVar': SomeVarSchema,
+        'SomeVar': SomeVarSchema,
+        'some_var': SomeVarSchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_some_var = api_client.QueryParameter(
+    name="someVar",
+    style=api_client.ParameterStyle.FORM,
+    schema=SomeVarSchema,
+    required=True,
+    explode=True,
+)
+request_query_some_var2 = api_client.QueryParameter(
+    name="SomeVar",
+    style=api_client.ParameterStyle.FORM,
+    schema=SomeVarSchema,
+    required=True,
+    explode=True,
+)
+request_query_some_var3 = api_client.QueryParameter(
+    name="some_var",
+    style=api_client.ParameterStyle.FORM,
+    schema=SomeVarSchema,
+    required=True,
+    explode=True,
+)
+_path = '/fake/case-sensitive-params'
+_method = 'PUT'
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+
+
+class CaseSensitiveParams(api_client.Api):
+
+    def case_sensitive_params(
+        self: api_client.Api,
+        query_params: RequestQueryParams = frozendict(),
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_some_var,
+            request_query_some_var2,
+            request_query_some_var3,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/client_model.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/client_model.py
new file mode 100644
index 00000000000..32c09a60148
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/client_model.py
@@ -0,0 +1,162 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.client import Client
+
+# body param
+SchemaForRequestBodyApplicationJson = Client
+
+
+request_body_client = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/fake'
+_method = 'PATCH'
+SchemaFor200ResponseBodyApplicationJson = Client
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class ClientModel(api_client.Api):
+
+    def client_model(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        To test \&quot;client\&quot; model
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_client.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/composed_one_of_different_types.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/composed_one_of_different_types.py
new file mode 100644
index 00000000000..f18f635fbcb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/composed_one_of_different_types.py
@@ -0,0 +1,158 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.composed_one_of_different_types import ComposedOneOfDifferentTypes
+
+# body param
+SchemaForRequestBodyApplicationJson = ComposedOneOfDifferentTypes
+
+
+request_body_composed_one_of_different_types = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/composed_one_of_number_with_validations'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = ComposedOneOfDifferentTypes
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class ComposedOneOfDifferentTypes(api_client.Api):
+
+    def composed_one_of_different_types(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_composed_one_of_different_types.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/endpoint_parameters.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/endpoint_parameters.py
new file mode 100644
index 00000000000..5898d0608a2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/endpoint_parameters.py
@@ -0,0 +1,289 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# body param
+
+
+class SchemaForRequestBodyApplicationXWwwFormUrlencoded(
+    DictSchema
+):
+    _required_property_names = set((
+    ))
+    
+    
+    class integer(
+        _SchemaValidator(
+            inclusive_maximum=100,
+            inclusive_minimum=10,
+        ),
+        IntSchema
+    ):
+        pass
+    
+    
+    class int32(
+        _SchemaValidator(
+            inclusive_maximum=200,
+            inclusive_minimum=20,
+        ),
+        Int32Schema
+    ):
+        pass
+    int64 = Int64Schema
+    
+    
+    class number(
+        _SchemaValidator(
+            inclusive_maximum=543.2,
+            inclusive_minimum=32.1,
+        ),
+        NumberSchema
+    ):
+        pass
+    
+    
+    class _float(
+        _SchemaValidator(
+            inclusive_maximum=987.6,
+        ),
+        Float32Schema
+    ):
+        pass
+    locals()['float'] = _float
+    del locals()['_float']
+    
+    
+    class double(
+        _SchemaValidator(
+            inclusive_maximum=123.4,
+            inclusive_minimum=67.8,
+        ),
+        Float64Schema
+    ):
+        pass
+    
+    
+    class string(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'[a-z]',  # noqa: E501
+                'flags': (
+                    re.IGNORECASE
+                )
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+    
+    
+    class pattern_without_delimiter(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'^[A-Z].*',  # noqa: E501
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+    byte = StrSchema
+    binary = BinarySchema
+    date = DateSchema
+    dateTime = DateTimeSchema
+    
+    
+    class password(
+        _SchemaValidator(
+            max_length=64,
+            min_length=10,
+        ),
+        StrSchema
+    ):
+        pass
+    callback = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        integer: typing.Union[integer, Unset] = unset,
+        int32: typing.Union[int32, Unset] = unset,
+        int64: typing.Union[int64, Unset] = unset,
+        string: typing.Union[string, Unset] = unset,
+        binary: typing.Union[binary, Unset] = unset,
+        date: typing.Union[date, Unset] = unset,
+        dateTime: typing.Union[dateTime, Unset] = unset,
+        password: typing.Union[password, Unset] = unset,
+        callback: typing.Union[callback, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyApplicationXWwwFormUrlencoded':
+        return super().__new__(
+            cls,
+            *args,
+            integer=integer,
+            int32=int32,
+            int64=int64,
+            string=string,
+            binary=binary,
+            date=date,
+            dateTime=dateTime,
+            password=password,
+            callback=callback,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/x-www-form-urlencoded': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationXWwwFormUrlencoded),
+    },
+)
+_path = '/fake'
+_method = 'POST'
+_auth = [
+    'http_basic_test',
+]
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+
+
+class EndpointParameters(api_client.Api):
+
+    def endpoint_parameters(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] = unset,
+        content_type: str = 'application/x-www-form-urlencoded',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/enum_parameters.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/enum_parameters.py
new file mode 100644
index 00000000000..9a0375a83d9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/enum_parameters.py
@@ -0,0 +1,481 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# query params
+
+
+class EnumQueryStringArraySchema(
+    ListSchema
+):
+    
+    
+    class _items(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                ">": "GREATER_THAN",
+                "$": "DOLLAR",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def GREATER_THAN(cls):
+            return cls._enum_by_value[">"](">")
+        
+        @classmethod
+        @property
+        def DOLLAR(cls):
+            return cls._enum_by_value["$"]("$")
+
+
+class EnumQueryStringSchema(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            "_abc": "_ABC",
+            "-efg": "EFG",
+            "(xyz)": "XYZ",
+        }
+    ),
+    StrSchema
+):
+    
+    @classmethod
+    @property
+    def _ABC(cls):
+        return cls._enum_by_value["_abc"]("_abc")
+    
+    @classmethod
+    @property
+    def EFG(cls):
+        return cls._enum_by_value["-efg"]("-efg")
+    
+    @classmethod
+    @property
+    def XYZ(cls):
+        return cls._enum_by_value["(xyz)"]("(xyz)")
+
+
+class EnumQueryIntegerSchema(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            1: "POSITIVE_1",
+            -2: "NEGATIVE_2",
+        }
+    ),
+    Int32Schema
+):
+    
+    @classmethod
+    @property
+    def POSITIVE_1(cls):
+        return cls._enum_by_value[1](1)
+    
+    @classmethod
+    @property
+    def NEGATIVE_2(cls):
+        return cls._enum_by_value[-2](-2)
+
+
+class EnumQueryDoubleSchema(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            1.1: "POSITIVE_1_PT_1",
+            -1.2: "NEGATIVE_1_PT_2",
+        }
+    ),
+    Float64Schema
+):
+    
+    @classmethod
+    @property
+    def POSITIVE_1_PT_1(cls):
+        return cls._enum_by_value[1.1](1.1)
+    
+    @classmethod
+    @property
+    def NEGATIVE_1_PT_2(cls):
+        return cls._enum_by_value[-1.2](-1.2)
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+        'enum_query_string_array': EnumQueryStringArraySchema,
+        'enum_query_string': EnumQueryStringSchema,
+        'enum_query_integer': EnumQueryIntegerSchema,
+        'enum_query_double': EnumQueryDoubleSchema,
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_enum_query_string_array = api_client.QueryParameter(
+    name="enum_query_string_array",
+    style=api_client.ParameterStyle.FORM,
+    schema=EnumQueryStringArraySchema,
+    explode=True,
+)
+request_query_enum_query_string = api_client.QueryParameter(
+    name="enum_query_string",
+    style=api_client.ParameterStyle.FORM,
+    schema=EnumQueryStringSchema,
+    explode=True,
+)
+request_query_enum_query_integer = api_client.QueryParameter(
+    name="enum_query_integer",
+    style=api_client.ParameterStyle.FORM,
+    schema=EnumQueryIntegerSchema,
+    explode=True,
+)
+request_query_enum_query_double = api_client.QueryParameter(
+    name="enum_query_double",
+    style=api_client.ParameterStyle.FORM,
+    schema=EnumQueryDoubleSchema,
+    explode=True,
+)
+# header params
+
+
+class EnumHeaderStringArraySchema(
+    ListSchema
+):
+    
+    
+    class _items(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                ">": "GREATER_THAN",
+                "$": "DOLLAR",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def GREATER_THAN(cls):
+            return cls._enum_by_value[">"](">")
+        
+        @classmethod
+        @property
+        def DOLLAR(cls):
+            return cls._enum_by_value["$"]("$")
+
+
+class EnumHeaderStringSchema(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            "_abc": "_ABC",
+            "-efg": "EFG",
+            "(xyz)": "XYZ",
+        }
+    ),
+    StrSchema
+):
+    
+    @classmethod
+    @property
+    def _ABC(cls):
+        return cls._enum_by_value["_abc"]("_abc")
+    
+    @classmethod
+    @property
+    def EFG(cls):
+        return cls._enum_by_value["-efg"]("-efg")
+    
+    @classmethod
+    @property
+    def XYZ(cls):
+        return cls._enum_by_value["(xyz)"]("(xyz)")
+RequestRequiredHeaderParams = typing.TypedDict(
+    'RequestRequiredHeaderParams',
+    {
+    }
+)
+RequestOptionalHeaderParams = typing.TypedDict(
+    'RequestOptionalHeaderParams',
+    {
+        'enum_header_string_array': EnumHeaderStringArraySchema,
+        'enum_header_string': EnumHeaderStringSchema,
+    },
+    total=False
+)
+
+
+class RequestHeaderParams(RequestRequiredHeaderParams, RequestOptionalHeaderParams):
+    pass
+
+
+request_header_enum_header_string_array = api_client.HeaderParameter(
+    name="enum_header_string_array",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=EnumHeaderStringArraySchema,
+)
+request_header_enum_header_string = api_client.HeaderParameter(
+    name="enum_header_string",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=EnumHeaderStringSchema,
+)
+# body param
+
+
+class SchemaForRequestBodyApplicationXWwwFormUrlencoded(
+    DictSchema
+):
+    
+    
+    class enum_form_string_array(
+        ListSchema
+    ):
+        
+        
+        class _items(
+            _SchemaEnumMaker(
+                enum_value_to_name={
+                    ">": "GREATER_THAN",
+                    "$": "DOLLAR",
+                }
+            ),
+            StrSchema
+        ):
+            
+            @classmethod
+            @property
+            def GREATER_THAN(cls):
+                return cls._enum_by_value[">"](">")
+            
+            @classmethod
+            @property
+            def DOLLAR(cls):
+                return cls._enum_by_value["$"]("$")
+    
+    
+    class enum_form_string(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "_abc": "_ABC",
+                "-efg": "EFG",
+                "(xyz)": "XYZ",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def _ABC(cls):
+            return cls._enum_by_value["_abc"]("_abc")
+        
+        @classmethod
+        @property
+        def EFG(cls):
+            return cls._enum_by_value["-efg"]("-efg")
+        
+        @classmethod
+        @property
+        def XYZ(cls):
+            return cls._enum_by_value["(xyz)"]("(xyz)")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        enum_form_string_array: typing.Union[enum_form_string_array, Unset] = unset,
+        enum_form_string: typing.Union[enum_form_string, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyApplicationXWwwFormUrlencoded':
+        return super().__new__(
+            cls,
+            *args,
+            enum_form_string_array=enum_form_string_array,
+            enum_form_string=enum_form_string,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/x-www-form-urlencoded': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationXWwwFormUrlencoded),
+    },
+)
+_path = '/fake'
+_method = 'GET'
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+
+
+class EnumParameters(api_client.Api):
+
+    def enum_parameters(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] = unset,
+        query_params: RequestQueryParams = frozendict(),
+        header_params: RequestHeaderParams = frozendict(),
+        content_type: str = 'application/x-www-form-urlencoded',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        To test enum parameters
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+        self._verify_typed_dict_inputs(RequestHeaderParams, header_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_enum_query_string_array,
+            request_query_enum_query_string,
+            request_query_enum_query_integer,
+            request_query_enum_query_double,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        for parameter in (
+            request_header_enum_header_string_array,
+            request_header_enum_header_string,
+        ):
+            parameter_data = header_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _headers.extend(serialized_data)
+        # TODO add cookie handling
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/fake_health_get.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/fake_health_get.py
new file mode 100644
index 00000000000..321959bf07e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/fake_health_get.py
@@ -0,0 +1,136 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.health_check_result import HealthCheckResult
+
+_path = '/fake/health'
+_method = 'GET'
+SchemaFor200ResponseBodyApplicationJson = HealthCheckResult
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class FakeHealthGet(api_client.Api):
+
+    def fake_health_get(
+        self: api_client.Api,
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Health check endpoint
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/group_parameters.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/group_parameters.py
new file mode 100644
index 00000000000..77bce3d6270
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/group_parameters.py
@@ -0,0 +1,235 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# query params
+RequiredStringGroupSchema = IntSchema
+RequiredInt64GroupSchema = Int64Schema
+StringGroupSchema = IntSchema
+Int64GroupSchema = Int64Schema
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'required_string_group': RequiredStringGroupSchema,
+        'required_int64_group': RequiredInt64GroupSchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+        'string_group': StringGroupSchema,
+        'int64_group': Int64GroupSchema,
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_required_string_group = api_client.QueryParameter(
+    name="required_string_group",
+    style=api_client.ParameterStyle.FORM,
+    schema=RequiredStringGroupSchema,
+    required=True,
+    explode=True,
+)
+request_query_required_int64_group = api_client.QueryParameter(
+    name="required_int64_group",
+    style=api_client.ParameterStyle.FORM,
+    schema=RequiredInt64GroupSchema,
+    required=True,
+    explode=True,
+)
+request_query_string_group = api_client.QueryParameter(
+    name="string_group",
+    style=api_client.ParameterStyle.FORM,
+    schema=StringGroupSchema,
+    explode=True,
+)
+request_query_int64_group = api_client.QueryParameter(
+    name="int64_group",
+    style=api_client.ParameterStyle.FORM,
+    schema=Int64GroupSchema,
+    explode=True,
+)
+# header params
+RequiredBooleanGroupSchema = BoolSchema
+BooleanGroupSchema = BoolSchema
+RequestRequiredHeaderParams = typing.TypedDict(
+    'RequestRequiredHeaderParams',
+    {
+        'required_boolean_group': RequiredBooleanGroupSchema,
+    }
+)
+RequestOptionalHeaderParams = typing.TypedDict(
+    'RequestOptionalHeaderParams',
+    {
+        'boolean_group': BooleanGroupSchema,
+    },
+    total=False
+)
+
+
+class RequestHeaderParams(RequestRequiredHeaderParams, RequestOptionalHeaderParams):
+    pass
+
+
+request_header_required_boolean_group = api_client.HeaderParameter(
+    name="required_boolean_group",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=RequiredBooleanGroupSchema,
+    required=True,
+)
+request_header_boolean_group = api_client.HeaderParameter(
+    name="boolean_group",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=BooleanGroupSchema,
+)
+_path = '/fake'
+_method = 'DELETE'
+_auth = [
+    'bearer_test',
+]
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+}
+
+
+class GroupParameters(api_client.Api):
+
+    def group_parameters(
+        self: api_client.Api,
+        query_params: RequestQueryParams = frozendict(),
+        header_params: RequestHeaderParams = frozendict(),
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Fake endpoint to test group parameters (optional)
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+        self._verify_typed_dict_inputs(RequestHeaderParams, header_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_required_string_group,
+            request_query_required_int64_group,
+            request_query_string_group,
+            request_query_int64_group,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        for parameter in (
+            request_header_required_boolean_group,
+            request_header_boolean_group,
+        ):
+            parameter_data = header_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _headers.extend(serialized_data)
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/inline_additional_properties.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/inline_additional_properties.py
new file mode 100644
index 00000000000..3dcf988a1b7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/inline_additional_properties.py
@@ -0,0 +1,165 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# body param
+
+
+class SchemaForRequestBodyApplicationJson(
+    DictSchema
+):
+    _additional_properties = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyApplicationJson':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_request_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/fake/inline-additionalProperties'
+_method = 'POST'
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+
+
+class InlineAdditionalProperties(api_client.Api):
+
+    def inline_additional_properties(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        test inline additionalProperties
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_request_body.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/json_form_data.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/json_form_data.py
new file mode 100644
index 00000000000..917d5c7b7d7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/json_form_data.py
@@ -0,0 +1,165 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# body param
+
+
+class SchemaForRequestBodyApplicationXWwwFormUrlencoded(
+    DictSchema
+):
+    _required_property_names = set((
+    ))
+    param = StrSchema
+    param2 = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyApplicationXWwwFormUrlencoded':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/x-www-form-urlencoded': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationXWwwFormUrlencoded),
+    },
+)
+_path = '/fake/jsonFormData'
+_method = 'GET'
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+
+
+class JsonFormData(api_client.Api):
+
+    def json_form_data(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] = unset,
+        content_type: str = 'application/x-www-form-urlencoded',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        test json serialization of form data
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/mammal.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/mammal.py
new file mode 100644
index 00000000000..40880fd1b09
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/mammal.py
@@ -0,0 +1,161 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.mammal import Mammal
+
+# body param
+SchemaForRequestBodyApplicationJson = Mammal
+
+
+request_body_mammal = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/fake/refs/mammal'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = Mammal
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class Mammal(api_client.Api):
+
+    def mammal(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_mammal.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/number_with_validations.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/number_with_validations.py
new file mode 100644
index 00000000000..e2481118651
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/number_with_validations.py
@@ -0,0 +1,158 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.number_with_validations import NumberWithValidations
+
+# body param
+SchemaForRequestBodyApplicationJson = NumberWithValidations
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/number'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = NumberWithValidations
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class NumberWithValidations(api_client.Api):
+
+    def number_with_validations(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/object_model_with_ref_props.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/object_model_with_ref_props.py
new file mode 100644
index 00000000000..6e72d45b78d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/object_model_with_ref_props.py
@@ -0,0 +1,158 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.object_model_with_ref_props import ObjectModelWithRefProps
+
+# body param
+SchemaForRequestBodyApplicationJson = ObjectModelWithRefProps
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/object_model_with_ref_props'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = ObjectModelWithRefProps
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class ObjectModelWithRefProps(api_client.Api):
+
+    def object_model_with_ref_props(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/parameter_collisions.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/parameter_collisions.py
new file mode 100644
index 00000000000..4ec604dd98c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/parameter_collisions.py
@@ -0,0 +1,426 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# query params
+Model1Schema = StrSchema
+ABSchema = StrSchema
+AbSchema = StrSchema
+ModelSelfSchema = StrSchema
+ABSchema = StrSchema
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+        '1': Model1Schema,
+        'aB': ABSchema,
+        'Ab': AbSchema,
+        'self': ModelSelfSchema,
+        'A-B': ABSchema,
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query__1 = api_client.QueryParameter(
+    name="1",
+    style=api_client.ParameterStyle.FORM,
+    schema=Model1Schema,
+    explode=True,
+)
+request_query_a_b = api_client.QueryParameter(
+    name="aB",
+    style=api_client.ParameterStyle.FORM,
+    schema=ABSchema,
+    explode=True,
+)
+request_query_ab = api_client.QueryParameter(
+    name="Ab",
+    style=api_client.ParameterStyle.FORM,
+    schema=AbSchema,
+    explode=True,
+)
+request_query__self = api_client.QueryParameter(
+    name="self",
+    style=api_client.ParameterStyle.FORM,
+    schema=ModelSelfSchema,
+    explode=True,
+)
+request_query_a_b2 = api_client.QueryParameter(
+    name="A-B",
+    style=api_client.ParameterStyle.FORM,
+    schema=ABSchema,
+    explode=True,
+)
+# header params
+Model1Schema = StrSchema
+ABSchema = StrSchema
+ModelSelfSchema = StrSchema
+ABSchema = StrSchema
+RequestRequiredHeaderParams = typing.TypedDict(
+    'RequestRequiredHeaderParams',
+    {
+    }
+)
+RequestOptionalHeaderParams = typing.TypedDict(
+    'RequestOptionalHeaderParams',
+    {
+        '1': Model1Schema,
+        'aB': ABSchema,
+        'self': ModelSelfSchema,
+        'A-B': ABSchema,
+    },
+    total=False
+)
+
+
+class RequestHeaderParams(RequestRequiredHeaderParams, RequestOptionalHeaderParams):
+    pass
+
+
+request_header__2 = api_client.HeaderParameter(
+    name="1",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=Model1Schema,
+)
+request_header_a_b3 = api_client.HeaderParameter(
+    name="aB",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ABSchema,
+)
+request_header__self2 = api_client.HeaderParameter(
+    name="self",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ModelSelfSchema,
+)
+request_header_a_b4 = api_client.HeaderParameter(
+    name="A-B",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ABSchema,
+)
+# path params
+Model1Schema = StrSchema
+ABSchema = StrSchema
+AbSchema = StrSchema
+ModelSelfSchema = StrSchema
+ABSchema = StrSchema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        '1': Model1Schema,
+        'aB': ABSchema,
+        'Ab': AbSchema,
+        'self': ModelSelfSchema,
+        'A-B': ABSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path__3 = api_client.PathParameter(
+    name="1",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=Model1Schema,
+    required=True,
+)
+request_path_a_b5 = api_client.PathParameter(
+    name="aB",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ABSchema,
+    required=True,
+)
+request_path_ab2 = api_client.PathParameter(
+    name="Ab",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=AbSchema,
+    required=True,
+)
+request_path__self3 = api_client.PathParameter(
+    name="self",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ModelSelfSchema,
+    required=True,
+)
+request_path_a_b6 = api_client.PathParameter(
+    name="A-B",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ABSchema,
+    required=True,
+)
+# cookie params
+Model1Schema = StrSchema
+ABSchema = StrSchema
+AbSchema = StrSchema
+ModelSelfSchema = StrSchema
+ABSchema = StrSchema
+RequestRequiredCookieParams = typing.TypedDict(
+    'RequestRequiredCookieParams',
+    {
+    }
+)
+RequestOptionalCookieParams = typing.TypedDict(
+    'RequestOptionalCookieParams',
+    {
+        '1': Model1Schema,
+        'aB': ABSchema,
+        'Ab': AbSchema,
+        'self': ModelSelfSchema,
+        'A-B': ABSchema,
+    },
+    total=False
+)
+
+
+class RequestCookieParams(RequestRequiredCookieParams, RequestOptionalCookieParams):
+    pass
+
+
+request_cookie__4 = api_client.CookieParameter(
+    name="1",
+    style=api_client.ParameterStyle.FORM,
+    schema=Model1Schema,
+    explode=True,
+)
+request_cookie_a_b7 = api_client.CookieParameter(
+    name="aB",
+    style=api_client.ParameterStyle.FORM,
+    schema=ABSchema,
+    explode=True,
+)
+request_cookie_ab3 = api_client.CookieParameter(
+    name="Ab",
+    style=api_client.ParameterStyle.FORM,
+    schema=AbSchema,
+    explode=True,
+)
+request_cookie__self4 = api_client.CookieParameter(
+    name="self",
+    style=api_client.ParameterStyle.FORM,
+    schema=ModelSelfSchema,
+    explode=True,
+)
+request_cookie_a_b8 = api_client.CookieParameter(
+    name="A-B",
+    style=api_client.ParameterStyle.FORM,
+    schema=ABSchema,
+    explode=True,
+)
+# body param
+SchemaForRequestBodyApplicationJson = AnyTypeSchema
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/parameterCollisions/{1}/{aB}/{Ab}/{self}/{A-B}/'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = AnyTypeSchema
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class ParameterCollisions(api_client.Api):
+
+    def parameter_collisions(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        query_params: RequestQueryParams = frozendict(),
+        header_params: RequestHeaderParams = frozendict(),
+        path_params: RequestPathParams = frozendict(),
+        cookie_params: RequestCookieParams = frozendict(),
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        parameter collision case
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+        self._verify_typed_dict_inputs(RequestHeaderParams, header_params)
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+        self._verify_typed_dict_inputs(RequestCookieParams, cookie_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path__3,
+            request_path_a_b5,
+            request_path_ab2,
+            request_path__self3,
+            request_path_a_b6,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _query_params = []
+        for parameter in (
+            request_query__1,
+            request_query_a_b,
+            request_query_ab,
+            request_query__self,
+            request_query_a_b2,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        for parameter in (
+            request_header__2,
+            request_header_a_b3,
+            request_header__self2,
+            request_header_a_b4,
+        ):
+            parameter_data = header_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _headers.extend(serialized_data)
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/query_parameter_collection_format.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/query_parameter_collection_format.py
new file mode 100644
index 00000000000..8fd0b87cf6c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/query_parameter_collection_format.py
@@ -0,0 +1,229 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.string_with_validation import StringWithValidation
+
+# query params
+
+
+class PipeSchema(
+    ListSchema
+):
+    _items = StrSchema
+
+
+class IoutilSchema(
+    ListSchema
+):
+    _items = StrSchema
+
+
+class HttpSchema(
+    ListSchema
+):
+    _items = StrSchema
+
+
+class UrlSchema(
+    ListSchema
+):
+    _items = StrSchema
+
+
+class ContextSchema(
+    ListSchema
+):
+    _items = StrSchema
+RefParamSchema = StringWithValidation
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'pipe': PipeSchema,
+        'ioutil': IoutilSchema,
+        'http': HttpSchema,
+        'url': UrlSchema,
+        'context': ContextSchema,
+        'refParam': RefParamSchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_pipe = api_client.QueryParameter(
+    name="pipe",
+    style=api_client.ParameterStyle.FORM,
+    schema=PipeSchema,
+    required=True,
+    explode=True,
+)
+request_query_ioutil = api_client.QueryParameter(
+    name="ioutil",
+    style=api_client.ParameterStyle.FORM,
+    schema=IoutilSchema,
+    required=True,
+)
+request_query_http = api_client.QueryParameter(
+    name="http",
+    style=api_client.ParameterStyle.SPACE_DELIMITED,
+    schema=HttpSchema,
+    required=True,
+)
+request_query_url = api_client.QueryParameter(
+    name="url",
+    style=api_client.ParameterStyle.FORM,
+    schema=UrlSchema,
+    required=True,
+)
+request_query_context = api_client.QueryParameter(
+    name="context",
+    style=api_client.ParameterStyle.FORM,
+    schema=ContextSchema,
+    required=True,
+    explode=True,
+)
+request_query_ref_param = api_client.QueryParameter(
+    name="refParam",
+    style=api_client.ParameterStyle.FORM,
+    schema=RefParamSchema,
+    required=True,
+    explode=True,
+)
+_path = '/fake/test-query-paramters'
+_method = 'PUT'
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+
+
+class QueryParameterCollectionFormat(api_client.Api):
+
+    def query_parameter_collection_format(
+        self: api_client.Api,
+        query_params: RequestQueryParams = frozendict(),
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_pipe,
+            request_query_ioutil,
+            request_query_http,
+            request_query_url,
+            request_query_context,
+            request_query_ref_param,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/string.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/string.py
new file mode 100644
index 00000000000..f1dda7d9754
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/string.py
@@ -0,0 +1,156 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# body param
+SchemaForRequestBodyApplicationJson = StrSchema
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/string'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = StrSchema
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class String(api_client.Api):
+
+    def string(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/string_enum.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/string_enum.py
new file mode 100644
index 00000000000..21d92e829df
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/string_enum.py
@@ -0,0 +1,158 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.string_enum import StringEnum
+
+# body param
+SchemaForRequestBodyApplicationJson = StringEnum
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+)
+_path = '/fake/refs/enum'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = StringEnum
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class StringEnum(api_client.Api):
+
+    def string_enum(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, Unset] = unset,
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_download_file.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_download_file.py
new file mode 100644
index 00000000000..73f707e268b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_download_file.py
@@ -0,0 +1,160 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# body param
+SchemaForRequestBodyApplicationOctetStream = BinarySchema
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/octet-stream': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationOctetStream),
+    },
+    required=True,
+)
+_path = '/fake/uploadDownloadFile'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationOctetStream = BinarySchema
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationOctetStream,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/octet-stream': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationOctetStream),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/octet-stream',
+)
+
+
+class UploadDownloadFile(api_client.Api):
+
+    def upload_download_file(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationOctetStream],
+        content_type: str = 'application/octet-stream',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        uploads a file and downloads a file using application/octet-stream
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_body.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_file.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_file.py
new file mode 100644
index 00000000000..f39892210cb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_file.py
@@ -0,0 +1,183 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.api_response import ApiResponse
+
+# body param
+
+
+class SchemaForRequestBodyMultipartFormData(
+    DictSchema
+):
+    _required_property_names = set((
+    ))
+    additionalMetadata = StrSchema
+    file = BinarySchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        additionalMetadata: typing.Union[additionalMetadata, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyMultipartFormData':
+        return super().__new__(
+            cls,
+            *args,
+            additionalMetadata=additionalMetadata,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'multipart/form-data': api_client.MediaType(
+            schema=SchemaForRequestBodyMultipartFormData),
+    },
+)
+_path = '/fake/uploadFile'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = ApiResponse
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class UploadFile(api_client.Api):
+
+    def upload_file(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyMultipartFormData, Unset] = unset,
+        content_type: str = 'multipart/form-data',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        uploads a file using multipart/form-data
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_files.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_files.py
new file mode 100644
index 00000000000..6be2c17a026
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_api_endpoints/upload_files.py
@@ -0,0 +1,185 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.api_response import ApiResponse
+
+# body param
+
+
+class SchemaForRequestBodyMultipartFormData(
+    DictSchema
+):
+    
+    
+    class files(
+        ListSchema
+    ):
+        _items = BinarySchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        files: typing.Union[files, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyMultipartFormData':
+        return super().__new__(
+            cls,
+            *args,
+            files=files,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'multipart/form-data': api_client.MediaType(
+            schema=SchemaForRequestBodyMultipartFormData),
+    },
+)
+_path = '/fake/uploadFiles'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationJson = ApiResponse
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class UploadFiles(api_client.Api):
+
+    def upload_files(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyMultipartFormData, Unset] = unset,
+        content_type: str = 'multipart/form-data',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        uploads files using multipart/form-data
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api.py
new file mode 100644
index 00000000000..cda926e1d0a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api.py
@@ -0,0 +1,25 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.fake_classname_tags_123_api_endpoints.classname import Classname
+
+
+class FakeClassnameTags123Api(
+    Classname,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api_endpoints/classname.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api_endpoints/classname.py
new file mode 100644
index 00000000000..1ccf89e848c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/fake_classname_tags_123_api_endpoints/classname.py
@@ -0,0 +1,166 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.client import Client
+
+# body param
+SchemaForRequestBodyApplicationJson = Client
+
+
+request_body_client = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/fake_classname_test'
+_method = 'PATCH'
+_auth = [
+    'api_key_query',
+]
+SchemaFor200ResponseBodyApplicationJson = Client
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class Classname(api_client.Api):
+
+    def classname(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        To test class name in snake case
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_client.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api.py
new file mode 100644
index 00000000000..83efafb3ec3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api.py
@@ -0,0 +1,41 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.pet_api_endpoints.add_pet import AddPet
+from petstore_api.api.pet_api_endpoints.delete_pet import DeletePet
+from petstore_api.api.pet_api_endpoints.find_pets_by_status import FindPetsByStatus
+from petstore_api.api.pet_api_endpoints.find_pets_by_tags import FindPetsByTags
+from petstore_api.api.pet_api_endpoints.get_pet_by_id import GetPetById
+from petstore_api.api.pet_api_endpoints.update_pet import UpdatePet
+from petstore_api.api.pet_api_endpoints.update_pet_with_form import UpdatePetWithForm
+from petstore_api.api.pet_api_endpoints.upload_file_with_required_file import UploadFileWithRequiredFile
+from petstore_api.api.pet_api_endpoints.upload_image import UploadImage
+
+
+class PetApi(
+    AddPet,
+    DeletePet,
+    FindPetsByStatus,
+    FindPetsByTags,
+    GetPetById,
+    UpdatePet,
+    UpdatePetWithForm,
+    UploadFileWithRequiredFile,
+    UploadImage,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/add_pet.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/add_pet.py
new file mode 100644
index 00000000000..80280363358
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/add_pet.py
@@ -0,0 +1,183 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.pet import Pet
+
+# body param
+SchemaForRequestBodyApplicationJson = Pet
+SchemaForRequestBodyApplicationXml = Pet
+
+
+request_body_pet = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+        'application/xml': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationXml),
+    },
+    required=True,
+)
+_path = '/pet'
+_method = 'POST'
+_auth = [
+    'http_signature_test',
+    'petstore_auth',
+]
+_servers = (
+    {
+        'url': "http://petstore.swagger.io/v2",
+        'description': "No description provided",
+    },
+    {
+        'url': "http://path-server-test.petstore.local/v2",
+        'description': "No description provided",
+    },
+)
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+)
+
+
+@dataclass
+class ApiResponseFor405(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_405 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor405,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '405': _response_for_405,
+}
+
+
+class AddPet(api_client.Api):
+
+    def add_pet(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, SchemaForRequestBodyApplicationXml],
+        content_type: str = 'application/json',
+        host_index: typing.Optional[int] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Add a new pet to the store
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_pet.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        host = self.get_host('add_pet', _servers, host_index)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            host=host,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/delete_pet.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/delete_pet.py
new file mode 100644
index 00000000000..afb30b58048
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/delete_pet.py
@@ -0,0 +1,197 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# header params
+ApiKeySchema = StrSchema
+RequestRequiredHeaderParams = typing.TypedDict(
+    'RequestRequiredHeaderParams',
+    {
+    }
+)
+RequestOptionalHeaderParams = typing.TypedDict(
+    'RequestOptionalHeaderParams',
+    {
+        'api_key': ApiKeySchema,
+    },
+    total=False
+)
+
+
+class RequestHeaderParams(RequestRequiredHeaderParams, RequestOptionalHeaderParams):
+    pass
+
+
+request_header_api_key = api_client.HeaderParameter(
+    name="api_key",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=ApiKeySchema,
+)
+# path params
+PetIdSchema = Int64Schema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'petId': PetIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_pet_id = api_client.PathParameter(
+    name="petId",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=PetIdSchema,
+    required=True,
+)
+_path = '/pet/{petId}'
+_method = 'DELETE'
+_auth = [
+    'petstore_auth',
+]
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+}
+
+
+class DeletePet(api_client.Api):
+
+    def delete_pet(
+        self: api_client.Api,
+        header_params: RequestHeaderParams = frozendict(),
+        path_params: RequestPathParams = frozendict(),
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Deletes a pet
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestHeaderParams, header_params)
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_pet_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        for parameter in (
+            request_header_api_key,
+        ):
+            parameter_data = header_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _headers.extend(serialized_data)
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/find_pets_by_status.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/find_pets_by_status.py
new file mode 100644
index 00000000000..ac4b7f3ad8c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/find_pets_by_status.py
@@ -0,0 +1,247 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.pet import Pet
+
+# query params
+
+
+class StatusSchema(
+    ListSchema
+):
+    
+    
+    class _items(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "available": "AVAILABLE",
+                "pending": "PENDING",
+                "sold": "SOLD",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def AVAILABLE(cls):
+            return cls._enum_by_value["available"]("available")
+        
+        @classmethod
+        @property
+        def PENDING(cls):
+            return cls._enum_by_value["pending"]("pending")
+        
+        @classmethod
+        @property
+        def SOLD(cls):
+            return cls._enum_by_value["sold"]("sold")
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'status': StatusSchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_status = api_client.QueryParameter(
+    name="status",
+    style=api_client.ParameterStyle.FORM,
+    schema=StatusSchema,
+    required=True,
+)
+_path = '/pet/findByStatus'
+_method = 'GET'
+_auth = [
+    'http_signature_test',
+    'petstore_auth',
+]
+
+
+class SchemaFor200ResponseBodyApplicationXml(
+    ListSchema
+):
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['Pet']:
+        return Pet
+
+
+class SchemaFor200ResponseBodyApplicationJson(
+    ListSchema
+):
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['Pet']:
+        return Pet
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class FindPetsByStatus(api_client.Api):
+
+    def find_pets_by_status(
+        self: api_client.Api,
+        query_params: RequestQueryParams = frozendict(),
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Finds Pets by status
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_status,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/find_pets_by_tags.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/find_pets_by_tags.py
new file mode 100644
index 00000000000..5496b92cd55
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/find_pets_by_tags.py
@@ -0,0 +1,221 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.pet import Pet
+
+# query params
+
+
+class TagsSchema(
+    ListSchema
+):
+    _items = StrSchema
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'tags': TagsSchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_tags = api_client.QueryParameter(
+    name="tags",
+    style=api_client.ParameterStyle.FORM,
+    schema=TagsSchema,
+    required=True,
+)
+_path = '/pet/findByTags'
+_method = 'GET'
+_auth = [
+    'http_signature_test',
+    'petstore_auth',
+]
+
+
+class SchemaFor200ResponseBodyApplicationXml(
+    ListSchema
+):
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['Pet']:
+        return Pet
+
+
+class SchemaFor200ResponseBodyApplicationJson(
+    ListSchema
+):
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['Pet']:
+        return Pet
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class FindPetsByTags(api_client.Api):
+
+    def find_pets_by_tags(
+        self: api_client.Api,
+        query_params: RequestQueryParams = frozendict(),
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Finds Pets by tags
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_tags,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/get_pet_by_id.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/get_pet_by_id.py
new file mode 100644
index 00000000000..549fd2aa6fc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/get_pet_by_id.py
@@ -0,0 +1,210 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.pet import Pet
+
+# path params
+PetIdSchema = Int64Schema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'petId': PetIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_pet_id = api_client.PathParameter(
+    name="petId",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=PetIdSchema,
+    required=True,
+)
+_path = '/pet/{petId}'
+_method = 'GET'
+_auth = [
+    'api_key',
+]
+SchemaFor200ResponseBodyApplicationXml = Pet
+SchemaFor200ResponseBodyApplicationJson = Pet
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class GetPetById(api_client.Api):
+
+    def get_pet_by_id(
+        self: api_client.Api,
+        path_params: RequestPathParams = frozendict(),
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Find pet by ID
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_pet_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/update_pet.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/update_pet.py
new file mode 100644
index 00000000000..fa1b5a1bb96
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/update_pet.py
@@ -0,0 +1,195 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.pet import Pet
+
+# body param
+SchemaForRequestBodyApplicationJson = Pet
+SchemaForRequestBodyApplicationXml = Pet
+
+
+request_body_pet = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+        'application/xml': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationXml),
+    },
+    required=True,
+)
+_path = '/pet'
+_method = 'PUT'
+_auth = [
+    'http_signature_test',
+    'petstore_auth',
+]
+_servers = (
+    {
+        'url': "http://petstore.swagger.io/v2",
+        'description': "No description provided",
+    },
+    {
+        'url': "http://path-server-test.petstore.local/v2",
+        'description': "No description provided",
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+
+
+@dataclass
+class ApiResponseFor405(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_405 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor405,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+    '404': _response_for_404,
+    '405': _response_for_405,
+}
+
+
+class UpdatePet(api_client.Api):
+
+    def update_pet(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson, SchemaForRequestBodyApplicationXml],
+        content_type: str = 'application/json',
+        host_index: typing.Optional[int] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Update an existing pet
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_pet.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        host = self.get_host('update_pet', _servers, host_index)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            host=host,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/update_pet_with_form.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/update_pet_with_form.py
new file mode 100644
index 00000000000..798b70c896a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/update_pet_with_form.py
@@ -0,0 +1,209 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# path params
+PetIdSchema = Int64Schema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'petId': PetIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_pet_id = api_client.PathParameter(
+    name="petId",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=PetIdSchema,
+    required=True,
+)
+# body param
+
+
+class SchemaForRequestBodyApplicationXWwwFormUrlencoded(
+    DictSchema
+):
+    name = StrSchema
+    status = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        name: typing.Union[name, Unset] = unset,
+        status: typing.Union[status, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyApplicationXWwwFormUrlencoded':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            status=status,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'application/x-www-form-urlencoded': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationXWwwFormUrlencoded),
+    },
+)
+_path = '/pet/{petId}'
+_method = 'POST'
+_auth = [
+    'petstore_auth',
+]
+
+
+@dataclass
+class ApiResponseFor405(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_405 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor405,
+)
+_status_code_to_response = {
+    '405': _response_for_405,
+}
+
+
+class UpdatePetWithForm(api_client.Api):
+
+    def update_pet_with_form(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationXWwwFormUrlencoded, Unset] = unset,
+        path_params: RequestPathParams = frozendict(),
+        content_type: str = 'application/x-www-form-urlencoded',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Updates a pet in the store with form data
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_pet_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_file.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_file.py
new file mode 100644
index 00000000000..faa353d8d30
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_file.py
@@ -0,0 +1,216 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+from decimal import Decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    BoolSchema,
+    FileSchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    FileBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.api_response import ApiResponse
+
+# path params
+PetIdSchema = Int64Schema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'petId': PetIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_pet_id = api_client.PathParameter(
+    name="petId",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=PetIdSchema,
+    required=True,
+)
+# body param
+
+
+class SchemaForRequestBodyMultipartFormData(
+    DictSchema
+):
+    additionalMetadata = StrSchema
+    file = FileSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        additionalMetadata: typing.Union[additionalMetadata, Unset] = unset,
+        file: typing.Union[file, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ):
+        return super().__new__(
+            cls,
+            *args,
+            additionalMetadata=additionalMetadata,
+            file=file,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'multipart/form-data': api_client.MediaType(
+            schema=SchemaForRequestBodyMultipartFormData),
+    },
+)
+_path = '/pet/{petId}/uploadImage'
+_method = 'POST'
+_auth = [
+    'petstore_auth',
+]
+SchemaFor200ResponseBodyApplicationJson = ApiResponse
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class UploadFile(api_client.Api):
+
+    def upload_file(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyMultipartFormData, Unset] = unset,
+        path_params: RequestPathParams = frozendict(),
+        content_type: str = 'multipart/form-data',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        uploads an image
+        Parameters use leading underscores to prevent collisions with user defined
+        parameters from the source openapi spec
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_pet_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+        )
+
+        response_for_status = _status_code_to_response.get(str(response.status))
+        if response_for_status:
+            api_response = response_for_status.deserialize(response, self.api_client.configuration)
+        else:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_file_with_required_file.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_file_with_required_file.py
new file mode 100644
index 00000000000..c137418e02d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_file_with_required_file.py
@@ -0,0 +1,226 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.api_response import ApiResponse
+
+# path params
+PetIdSchema = Int64Schema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'petId': PetIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_pet_id = api_client.PathParameter(
+    name="petId",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=PetIdSchema,
+    required=True,
+)
+# body param
+
+
+class SchemaForRequestBodyMultipartFormData(
+    DictSchema
+):
+    _required_property_names = set((
+    ))
+    additionalMetadata = StrSchema
+    requiredFile = BinarySchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        additionalMetadata: typing.Union[additionalMetadata, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyMultipartFormData':
+        return super().__new__(
+            cls,
+            *args,
+            additionalMetadata=additionalMetadata,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'multipart/form-data': api_client.MediaType(
+            schema=SchemaForRequestBodyMultipartFormData),
+    },
+)
+_path = '/fake/{petId}/uploadImageWithRequiredFile'
+_method = 'POST'
+_auth = [
+    'petstore_auth',
+]
+SchemaFor200ResponseBodyApplicationJson = ApiResponse
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class UploadFileWithRequiredFile(api_client.Api):
+
+    def upload_file_with_required_file(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyMultipartFormData, Unset] = unset,
+        path_params: RequestPathParams = frozendict(),
+        content_type: str = 'multipart/form-data',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        uploads an image (required)
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_pet_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_image.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_image.py
new file mode 100644
index 00000000000..10c595a21ab
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/pet_api_endpoints/upload_image.py
@@ -0,0 +1,224 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.api_response import ApiResponse
+
+# path params
+PetIdSchema = Int64Schema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'petId': PetIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_pet_id = api_client.PathParameter(
+    name="petId",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=PetIdSchema,
+    required=True,
+)
+# body param
+
+
+class SchemaForRequestBodyMultipartFormData(
+    DictSchema
+):
+    additionalMetadata = StrSchema
+    file = BinarySchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        additionalMetadata: typing.Union[additionalMetadata, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaForRequestBodyMultipartFormData':
+        return super().__new__(
+            cls,
+            *args,
+            additionalMetadata=additionalMetadata,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+request_body_body = api_client.RequestBody(
+    content={
+        'multipart/form-data': api_client.MediaType(
+            schema=SchemaForRequestBodyMultipartFormData),
+    },
+)
+_path = '/pet/{petId}/uploadImage'
+_method = 'POST'
+_auth = [
+    'petstore_auth',
+]
+SchemaFor200ResponseBodyApplicationJson = ApiResponse
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class UploadImage(api_client.Api):
+
+    def upload_image(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyMultipartFormData, Unset] = unset,
+        path_params: RequestPathParams = frozendict(),
+        content_type: str = 'multipart/form-data',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        uploads an image
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_pet_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        _fields = None
+        _body = None
+        if body is not unset:
+            serialized_data = request_body_body.serialize(body, content_type)
+            _headers.add('Content-Type', content_type)
+            if 'fields' in serialized_data:
+                _fields = serialized_data['fields']
+            elif 'body' in serialized_data:
+                _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api.py
new file mode 100644
index 00000000000..3685a172804
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api.py
@@ -0,0 +1,31 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.store_api_endpoints.delete_order import DeleteOrder
+from petstore_api.api.store_api_endpoints.get_inventory import GetInventory
+from petstore_api.api.store_api_endpoints.get_order_by_id import GetOrderById
+from petstore_api.api.store_api_endpoints.place_order import PlaceOrder
+
+
+class StoreApi(
+    DeleteOrder,
+    GetInventory,
+    GetOrderById,
+    PlaceOrder,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/delete_order.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/delete_order.py
new file mode 100644
index 00000000000..1c4269d277b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/delete_order.py
@@ -0,0 +1,167 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# path params
+OrderIdSchema = StrSchema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'order_id': OrderIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_order_id = api_client.PathParameter(
+    name="order_id",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=OrderIdSchema,
+    required=True,
+)
+_path = '/store/order/{order_id}'
+_method = 'DELETE'
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+
+
+class DeleteOrder(api_client.Api):
+
+    def delete_order(
+        self: api_client.Api,
+        path_params: RequestPathParams = frozendict(),
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Delete purchase order by ID
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_order_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/get_inventory.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/get_inventory.py
new file mode 100644
index 00000000000..9daf61b0c08
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/get_inventory.py
@@ -0,0 +1,157 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+_path = '/store/inventory'
+_method = 'GET'
+_auth = [
+    'api_key',
+]
+
+
+class SchemaFor200ResponseBodyApplicationJson(
+    DictSchema
+):
+    _additional_properties = Int32Schema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SchemaFor200ResponseBodyApplicationJson':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+}
+_all_accept_content_types = (
+    'application/json',
+)
+
+
+class GetInventory(api_client.Api):
+
+    def get_inventory(
+        self: api_client.Api,
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Returns pet inventories by status
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            auth_settings=_auth,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/get_order_by_id.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/get_order_by_id.py
new file mode 100644
index 00000000000..99f9ecbb28f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/get_order_by_id.py
@@ -0,0 +1,215 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.order import Order
+
+# path params
+
+
+class OrderIdSchema(
+    _SchemaValidator(
+        inclusive_maximum=5,
+        inclusive_minimum=1,
+    ),
+    Int64Schema
+):
+    pass
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'order_id': OrderIdSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_order_id = api_client.PathParameter(
+    name="order_id",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=OrderIdSchema,
+    required=True,
+)
+_path = '/store/order/{order_id}'
+_method = 'GET'
+SchemaFor200ResponseBodyApplicationXml = Order
+SchemaFor200ResponseBodyApplicationJson = Order
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class GetOrderById(api_client.Api):
+
+    def get_order_by_id(
+        self: api_client.Api,
+        path_params: RequestPathParams = frozendict(),
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Find purchase order by ID
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_order_id,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/place_order.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/place_order.py
new file mode 100644
index 00000000000..ba961a9921e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/store_api_endpoints/place_order.py
@@ -0,0 +1,180 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.order import Order
+
+# body param
+SchemaForRequestBodyApplicationJson = Order
+
+
+request_body_order = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/store/order'
+_method = 'POST'
+SchemaFor200ResponseBodyApplicationXml = Order
+SchemaFor200ResponseBodyApplicationJson = Order
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class PlaceOrder(api_client.Api):
+
+    def place_order(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Place an order for a pet
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_order.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api.py
new file mode 100644
index 00000000000..1975100b9e6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api.py
@@ -0,0 +1,39 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from petstore_api.api_client import ApiClient
+from petstore_api.api.user_api_endpoints.create_user import CreateUser
+from petstore_api.api.user_api_endpoints.create_users_with_array_input import CreateUsersWithArrayInput
+from petstore_api.api.user_api_endpoints.create_users_with_list_input import CreateUsersWithListInput
+from petstore_api.api.user_api_endpoints.delete_user import DeleteUser
+from petstore_api.api.user_api_endpoints.get_user_by_name import GetUserByName
+from petstore_api.api.user_api_endpoints.login_user import LoginUser
+from petstore_api.api.user_api_endpoints.logout_user import LogoutUser
+from petstore_api.api.user_api_endpoints.update_user import UpdateUser
+
+
+class UserApi(
+    CreateUser,
+    CreateUsersWithArrayInput,
+    CreateUsersWithListInput,
+    DeleteUser,
+    GetUserByName,
+    LoginUser,
+    LogoutUser,
+    UpdateUser,
+    ApiClient,
+):
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_user.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_user.py
new file mode 100644
index 00000000000..7cc7494687d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_user.py
@@ -0,0 +1,152 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.user import User
+
+# body param
+SchemaForRequestBodyApplicationJson = User
+
+
+request_body_user = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/user'
+_method = 'POST'
+
+
+@dataclass
+class ApiResponseForDefault(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_default = api_client.OpenApiResponse(
+    response_cls=ApiResponseForDefault,
+)
+_status_code_to_response = {
+    'default': _response_for_default,
+}
+
+
+class CreateUser(api_client.Api):
+
+    def create_user(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseForDefault,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Create user
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_user.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                default_response = _status_code_to_response.get('default')
+                if default_response:
+                    api_response = default_response.deserialize(response, self.api_client.configuration)
+                else:
+                    api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_users_with_array_input.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_users_with_array_input.py
new file mode 100644
index 00000000000..d3ae4f85df7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_users_with_array_input.py
@@ -0,0 +1,161 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.user import User
+
+# body param
+
+
+class SchemaForRequestBodyApplicationJson(
+    ListSchema
+):
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['User']:
+        return User
+
+
+request_body_user = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/user/createWithArray'
+_method = 'POST'
+
+
+@dataclass
+class ApiResponseForDefault(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_default = api_client.OpenApiResponse(
+    response_cls=ApiResponseForDefault,
+)
+_status_code_to_response = {
+    'default': _response_for_default,
+}
+
+
+class CreateUsersWithArrayInput(api_client.Api):
+
+    def create_users_with_array_input(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseForDefault,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Creates list of users with given input array
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_user.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                default_response = _status_code_to_response.get('default')
+                if default_response:
+                    api_response = default_response.deserialize(response, self.api_client.configuration)
+                else:
+                    api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_users_with_list_input.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_users_with_list_input.py
new file mode 100644
index 00000000000..81553c66598
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/create_users_with_list_input.py
@@ -0,0 +1,161 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.user import User
+
+# body param
+
+
+class SchemaForRequestBodyApplicationJson(
+    ListSchema
+):
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['User']:
+        return User
+
+
+request_body_user = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/user/createWithList'
+_method = 'POST'
+
+
+@dataclass
+class ApiResponseForDefault(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_default = api_client.OpenApiResponse(
+    response_cls=ApiResponseForDefault,
+)
+_status_code_to_response = {
+    'default': _response_for_default,
+}
+
+
+class CreateUsersWithListInput(api_client.Api):
+
+    def create_users_with_list_input(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseForDefault,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Creates list of users with given input array
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_user.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                default_response = _status_code_to_response.get('default')
+                if default_response:
+                    api_response = default_response.deserialize(response, self.api_client.configuration)
+                else:
+                    api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/delete_user.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/delete_user.py
new file mode 100644
index 00000000000..f337efa3480
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/delete_user.py
@@ -0,0 +1,167 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# path params
+UsernameSchema = StrSchema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'username': UsernameSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_username = api_client.PathParameter(
+    name="username",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=UsernameSchema,
+    required=True,
+)
+_path = '/user/{username}'
+_method = 'DELETE'
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+
+
+class DeleteUser(api_client.Api):
+
+    def delete_user(
+        self: api_client.Api,
+        path_params: RequestPathParams = frozendict(),
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Delete user
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_username,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/get_user_by_name.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/get_user_by_name.py
new file mode 100644
index 00000000000..fa01a390119
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/get_user_by_name.py
@@ -0,0 +1,206 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.user import User
+
+# path params
+UsernameSchema = StrSchema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'username': UsernameSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_username = api_client.PathParameter(
+    name="username",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=UsernameSchema,
+    required=True,
+)
+_path = '/user/{username}'
+_method = 'GET'
+SchemaFor200ResponseBodyApplicationXml = User
+SchemaFor200ResponseBodyApplicationJson = User
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: Unset = unset
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class GetUserByName(api_client.Api):
+
+    def get_user_by_name(
+        self: api_client.Api,
+        path_params: RequestPathParams = frozendict(),
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Get user by user name
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_username,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/login_user.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/login_user.py
new file mode 100644
index 00000000000..47447322ff0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/login_user.py
@@ -0,0 +1,225 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+# query params
+UsernameSchema = StrSchema
+PasswordSchema = StrSchema
+RequestRequiredQueryParams = typing.TypedDict(
+    'RequestRequiredQueryParams',
+    {
+        'username': UsernameSchema,
+        'password': PasswordSchema,
+    }
+)
+RequestOptionalQueryParams = typing.TypedDict(
+    'RequestOptionalQueryParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams):
+    pass
+
+
+request_query_username = api_client.QueryParameter(
+    name="username",
+    style=api_client.ParameterStyle.FORM,
+    schema=UsernameSchema,
+    required=True,
+    explode=True,
+)
+request_query_password = api_client.QueryParameter(
+    name="password",
+    style=api_client.ParameterStyle.FORM,
+    schema=PasswordSchema,
+    required=True,
+    explode=True,
+)
+_path = '/user/login'
+_method = 'GET'
+XRateLimitSchema = Int32Schema
+x_rate_limit_parameter = api_client.HeaderParameter(
+    name="X-Rate-Limit",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=XRateLimitSchema,
+)
+XExpiresAfterSchema = DateTimeSchema
+x_expires_after_parameter = api_client.HeaderParameter(
+    name="X-Expires-After",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=XExpiresAfterSchema,
+)
+SchemaFor200ResponseBodyApplicationXml = StrSchema
+SchemaFor200ResponseBodyApplicationJson = StrSchema
+ResponseHeadersFor200 = typing.TypedDict(
+    'ResponseHeadersFor200',
+    {
+        'X-Rate-Limit': XRateLimitSchema,
+        'X-Expires-After': XExpiresAfterSchema,
+    }
+)
+
+
+@dataclass
+class ApiResponseFor200(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[
+        SchemaFor200ResponseBodyApplicationXml,
+        SchemaFor200ResponseBodyApplicationJson,
+    ]
+    headers: ResponseHeadersFor200
+
+
+_response_for_200 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor200,
+    content={
+        'application/xml': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationXml),
+        'application/json': api_client.MediaType(
+            schema=SchemaFor200ResponseBodyApplicationJson),
+    },
+    headers=[
+        x_rate_limit_parameter,
+        x_expires_after_parameter,
+    ]
+)
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+_status_code_to_response = {
+    '200': _response_for_200,
+    '400': _response_for_400,
+}
+_all_accept_content_types = (
+    'application/xml',
+    'application/json',
+)
+
+
+class LoginUser(api_client.Api):
+
+    def login_user(
+        self: api_client.Api,
+        query_params: RequestQueryParams = frozendict(),
+        accept_content_types: typing.Tuple[str] = _all_accept_content_types,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseFor200,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Logs user into the system
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestQueryParams, query_params)
+
+        _query_params = []
+        for parameter in (
+            request_query_username,
+            request_query_password,
+        ):
+            parameter_data = query_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _query_params.extend(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+        if accept_content_types:
+            for accept_content_type in accept_content_types:
+                _headers.add('Accept', accept_content_type)
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            query_params=tuple(_query_params),
+            headers=_headers,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/logout_user.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/logout_user.py
new file mode 100644
index 00000000000..99bcba58663
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/logout_user.py
@@ -0,0 +1,120 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+_path = '/user/logout'
+_method = 'GET'
+
+
+@dataclass
+class ApiResponseForDefault(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_default = api_client.OpenApiResponse(
+    response_cls=ApiResponseForDefault,
+)
+_status_code_to_response = {
+    'default': _response_for_default,
+}
+
+
+class LogoutUser(api_client.Api):
+
+    def logout_user(
+        self: api_client.Api,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        ApiResponseForDefault,
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Logs out current logged in user session
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        # TODO add cookie handling
+
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                default_response = _status_code_to_response.get('default')
+                if default_response:
+                    api_response = default_response.deserialize(response, self.api_client.configuration)
+                else:
+                    api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/update_user.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/update_user.py
new file mode 100644
index 00000000000..472d3354b84
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api/user_api_endpoints/update_user.py
@@ -0,0 +1,199 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api import api_client, exceptions
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+from petstore_api.model.user import User
+
+# path params
+UsernameSchema = StrSchema
+RequestRequiredPathParams = typing.TypedDict(
+    'RequestRequiredPathParams',
+    {
+        'username': UsernameSchema,
+    }
+)
+RequestOptionalPathParams = typing.TypedDict(
+    'RequestOptionalPathParams',
+    {
+    },
+    total=False
+)
+
+
+class RequestPathParams(RequestRequiredPathParams, RequestOptionalPathParams):
+    pass
+
+
+request_path_username = api_client.PathParameter(
+    name="username",
+    style=api_client.ParameterStyle.SIMPLE,
+    schema=UsernameSchema,
+    required=True,
+)
+# body param
+SchemaForRequestBodyApplicationJson = User
+
+
+request_body_user = api_client.RequestBody(
+    content={
+        'application/json': api_client.MediaType(
+            schema=SchemaForRequestBodyApplicationJson),
+    },
+    required=True,
+)
+_path = '/user/{username}'
+_method = 'PUT'
+
+
+@dataclass
+class ApiResponseFor400(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_400 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor400,
+)
+
+
+@dataclass
+class ApiResponseFor404(api_client.ApiResponse):
+    response: urllib3.HTTPResponse
+    body: Unset = unset
+    headers: Unset = unset
+
+
+_response_for_404 = api_client.OpenApiResponse(
+    response_cls=ApiResponseFor404,
+)
+_status_code_to_response = {
+    '400': _response_for_400,
+    '404': _response_for_404,
+}
+
+
+class UpdateUser(api_client.Api):
+
+    def update_user(
+        self: api_client.Api,
+        body: typing.Union[SchemaForRequestBodyApplicationJson],
+        path_params: RequestPathParams = frozendict(),
+        content_type: str = 'application/json',
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        skip_deserialization: bool = False,
+    ) -> typing.Union[
+        api_client.ApiResponseWithoutDeserialization
+    ]:
+        """
+        Updated user
+        :param skip_deserialization: If true then api_response.response will be set but
+            api_response.body and api_response.headers will not be deserialized into schema
+            class instances
+        """
+        self._verify_typed_dict_inputs(RequestPathParams, path_params)
+
+        _path_params = {}
+        for parameter in (
+            request_path_username,
+        ):
+            parameter_data = path_params.get(parameter.name, unset)
+            if parameter_data is unset:
+                continue
+            serialized_data = parameter.serialize(parameter_data)
+            _path_params.update(serialized_data)
+
+        _headers = HTTPHeaderDict()
+        # TODO add cookie handling
+
+        if body is unset:
+            raise exceptions.ApiValueError(
+                'The required body parameter has an invalid value of: unset. Set a valid value instead')
+        _fields = None
+        _body = None
+        serialized_data = request_body_user.serialize(body, content_type)
+        _headers.add('Content-Type', content_type)
+        if 'fields' in serialized_data:
+            _fields = serialized_data['fields']
+        elif 'body' in serialized_data:
+            _body = serialized_data['body']
+        response = self.api_client.call_api(
+            resource_path=_path,
+            method=_method,
+            path_params=_path_params,
+            headers=_headers,
+            fields=_fields,
+            body=_body,
+            stream=stream,
+            timeout=timeout,
+        )
+
+        if skip_deserialization:
+            api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+        else:
+            response_for_status = _status_code_to_response.get(str(response.status))
+            if response_for_status:
+                api_response = response_for_status.deserialize(response, self.api_client.configuration)
+            else:
+                api_response = api_client.ApiResponseWithoutDeserialization(response=response)
+
+        if not 200 <= response.status <= 299:
+            raise exceptions.ApiException(api_response=api_response)
+
+        return api_response
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/api_client.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/api_client.py
new file mode 100644
index 00000000000..adad78a8e84
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/api_client.py
@@ -0,0 +1,1378 @@
+# coding: utf-8
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from dataclasses import dataclass
+from decimal import Decimal
+import enum
+import json
+import os
+import io
+import atexit
+from multiprocessing.pool import ThreadPool
+import re
+import tempfile
+import typing
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+from urllib.parse import quote
+from urllib3.fields import RequestField as RequestFieldBase
+
+
+from petstore_api import rest
+from petstore_api.configuration import Configuration
+from petstore_api.exceptions import ApiTypeError, ApiValueError
+from petstore_api.schemas import (
+    NoneClass,
+    BoolClass,
+    Schema,
+    FileIO,
+    BinarySchema,
+    InstantiationMetadata,
+    date,
+    datetime,
+    none_type,
+    frozendict,
+    Unset,
+    unset,
+)
+
+
+class RequestField(RequestFieldBase):
+    def __eq__(self, other):
+        if not isinstance(other, RequestField):
+            return False
+        return self.__dict__ == other.__dict__
+
+
+class JSONEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, (str, int, float)):
+            # instances based on primitive classes
+            return obj
+        elif isinstance(obj, Decimal):
+            if obj.as_tuple().exponent >= 0:
+                return int(obj)
+            return float(obj)
+        elif isinstance(obj, NoneClass):
+            return None
+        elif isinstance(obj, BoolClass):
+            return bool(obj)
+        elif isinstance(obj, (dict, frozendict)):
+            return {key: self.default(val) for key, val in obj.items()}
+        elif isinstance(obj, (list, tuple)):
+            return [self.default(item) for item in obj]
+        raise ApiValueError('Unable to prepare type {} for serialization'.format(obj.__class__.__name__))
+
+
+class ParameterInType(enum.Enum):
+    QUERY = 'query'
+    HEADER = 'header'
+    PATH = 'path'
+    COOKIE = 'cookie'
+
+
+class ParameterStyle(enum.Enum):
+    MATRIX = 'matrix'
+    LABEL = 'label'
+    FORM = 'form'
+    SIMPLE = 'simple'
+    SPACE_DELIMITED = 'spaceDelimited'
+    PIPE_DELIMITED = 'pipeDelimited'
+    DEEP_OBJECT = 'deepObject'
+
+
+class ParameterSerializerBase:
+    @staticmethod
+    def __serialize_number(
+        in_data: typing.Union[int, float], name: str, prefix=''
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        return tuple([(name, prefix + str(in_data))])
+
+    @staticmethod
+    def __serialize_str(
+        in_data: str, name: str, prefix=''
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        return tuple([(name, prefix + quote(in_data))])
+
+    @staticmethod
+    def __serialize_bool(in_data: bool, name: str, prefix='') -> typing.Tuple[typing.Tuple[str, str]]:
+        if in_data:
+            return tuple([(name, prefix + 'true')])
+        return tuple([(name, prefix + 'false')])
+
+    @staticmethod
+    def __urlencode(in_data: typing.Any) -> str:
+        return quote(str(in_data))
+
+    def __serialize_list(
+        self,
+        in_data: typing.List[typing.Any],
+        style: ParameterStyle,
+        name: str,
+        explode: bool,
+        empty_val: typing.Union[typing.Tuple[str, str], typing.Tuple] = tuple(),
+        prefix: str = '',
+        separator: str = ',',
+    ) -> typing.Tuple[typing.Union[typing.Tuple[str, str], typing.Tuple], ...]:
+        if not in_data:
+            return empty_val
+        if explode and style in {
+            ParameterStyle.FORM,
+            ParameterStyle.MATRIX,
+            ParameterStyle.SPACE_DELIMITED,
+            ParameterStyle.PIPE_DELIMITED
+        }:
+            if style is ParameterStyle.FORM:
+                return tuple((name, prefix + self.__urlencode(val)) for val in in_data)
+            else:
+                joined_vals = prefix + separator.join(name + '=' + self.__urlencode(val) for val in in_data)
+        else:
+            joined_vals = prefix + separator.join(map(self.__urlencode, in_data))
+        return tuple([(name, joined_vals)])
+
+    def __form_item_representation(self, in_data: typing.Any) -> typing.Optional[str]:
+        if isinstance(in_data, none_type):
+            return None
+        elif isinstance(in_data, list):
+            if not in_data:
+                return None
+            raise ApiValueError('Unable to generate a form representation of {}'.format(in_data))
+        elif isinstance(in_data, dict):
+            if not in_data:
+                return None
+            raise ApiValueError('Unable to generate a form representation of {}'.format(in_data))
+        elif isinstance(in_data, (bool, bytes)):
+            raise ApiValueError('Unable to generate a form representation of {}'.format(in_data))
+        # str, float, int
+        return self.__urlencode(in_data)
+
+    def __serialize_dict(
+        self,
+        in_data: typing.Dict[str, typing.Any],
+        style: ParameterStyle,
+        name: str,
+        explode: bool,
+        empty_val: typing.Union[typing.Tuple[str, str], typing.Tuple] = tuple(),
+        prefix: str = '',
+        separator: str = ',',
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        if not in_data:
+            return empty_val
+        if all(val is None for val in in_data.values()):
+            return empty_val
+
+        form_items = {}
+        if style is ParameterStyle.FORM:
+            for key, val in in_data.items():
+                new_val = self.__form_item_representation(val)
+                if new_val is None:
+                    continue
+                form_items[key] = new_val
+
+        if explode:
+            if style is ParameterStyle.FORM:
+                return tuple((key, prefix + val) for key, val in form_items.items())
+            elif style in {
+                ParameterStyle.SIMPLE,
+                ParameterStyle.LABEL,
+                ParameterStyle.MATRIX,
+                ParameterStyle.SPACE_DELIMITED,
+                ParameterStyle.PIPE_DELIMITED
+            }:
+                joined_vals = prefix + separator.join(key + '=' + self.__urlencode(val) for key, val in in_data.items())
+            else:
+                raise ApiValueError(f'Invalid style {style} for dict serialization with explode=True')
+        elif style is ParameterStyle.FORM:
+            joined_vals = prefix + separator.join(key + separator + val for key, val in form_items.items())
+        else:
+            joined_vals = prefix + separator.join(
+                key + separator + self.__urlencode(val) for key, val in in_data.items())
+        return tuple([(name, joined_vals)])
+
+    def _serialize_x(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+        style: ParameterStyle,
+        name: str,
+        explode: bool,
+        empty_val: typing.Union[typing.Tuple[str, str], typing.Tuple] = (),
+        prefix: str = '',
+        separator: str = ',',
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        if isinstance(in_data, none_type):
+            return empty_val
+        elif isinstance(in_data, bool):
+            # must be before int check
+            return self.__serialize_bool(in_data, name=name, prefix=prefix)
+        elif isinstance(in_data, (int, float)):
+            return self.__serialize_number(in_data, name=name, prefix=prefix)
+        elif isinstance(in_data, str):
+            return self.__serialize_str(in_data, name=name, prefix=prefix)
+        elif isinstance(in_data, list):
+            return self.__serialize_list(
+                in_data,
+                style=style,
+                name=name,
+                explode=explode,
+                empty_val=empty_val,
+                prefix=prefix,
+                separator=separator
+            )
+        elif isinstance(in_data, dict):
+            return self.__serialize_dict(
+                in_data,
+                style=style,
+                name=name,
+                explode=explode,
+                empty_val=empty_val,
+                prefix=prefix,
+                separator=separator
+            )
+
+
+class StyleFormSerializer(ParameterSerializerBase):
+
+    def _serialize_form(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+        name: str,
+        explode: bool,
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        return self._serialize_x(in_data, style=ParameterStyle.FORM, name=name, explode=explode)
+
+
+class StyleSimpleSerializer(ParameterSerializerBase):
+
+    def _serialize_simple_tuple(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+        name: str,
+        explode: bool,
+        in_type: ParameterInType,
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        if in_type is ParameterInType.HEADER:
+            empty_val = ()
+        else:
+            empty_val = ((name, ''),)
+        return self._serialize_x(in_data, style=ParameterStyle.SIMPLE, name=name, explode=explode, empty_val=empty_val)
+
+
+@dataclass
+class ParameterBase:
+    name: str
+    in_type: ParameterInType
+    required: bool
+    style: typing.Optional[ParameterStyle]
+    explode: typing.Optional[bool]
+    allow_reserved: typing.Optional[bool]
+    schema: typing.Optional[typing.Type[Schema]]
+    content: typing.Optional[typing.Dict[str, typing.Type[Schema]]]
+
+    __style_to_in_type = {
+        ParameterStyle.MATRIX: {ParameterInType.PATH},
+        ParameterStyle.LABEL: {ParameterInType.PATH},
+        ParameterStyle.FORM: {ParameterInType.QUERY, ParameterInType.COOKIE},
+        ParameterStyle.SIMPLE: {ParameterInType.PATH, ParameterInType.HEADER},
+        ParameterStyle.SPACE_DELIMITED: {ParameterInType.QUERY},
+        ParameterStyle.PIPE_DELIMITED: {ParameterInType.QUERY},
+        ParameterStyle.DEEP_OBJECT: {ParameterInType.QUERY},
+    }
+    __in_type_to_default_style = {
+        ParameterInType.QUERY: ParameterStyle.FORM,
+        ParameterInType.PATH: ParameterStyle.SIMPLE,
+        ParameterInType.HEADER: ParameterStyle.SIMPLE,
+        ParameterInType.COOKIE: ParameterStyle.FORM,
+    }
+    __disallowed_header_names = {'Accept', 'Content-Type', 'Authorization'}
+    _json_encoder = JSONEncoder()
+    _json_content_type = 'application/json'
+
+    @classmethod
+    def __verify_style_to_in_type(cls, style: typing.Optional[ParameterStyle], in_type: ParameterInType):
+        if style is None:
+            return
+        in_type_set = cls.__style_to_in_type[style]
+        if in_type not in in_type_set:
+            raise ValueError(
+                'Invalid style and in_type combination. For style={} only in_type={} are allowed'.format(
+                    style, in_type_set
+                )
+            )
+
+    def __init__(
+        self,
+        name: str,
+        in_type: ParameterInType,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        if schema is None and content is None:
+            raise ValueError('Value missing; Pass in either schema or content')
+        if schema and content:
+            raise ValueError('Too many values provided. Both schema and content were provided. Only one may be input')
+        if name in self.__disallowed_header_names and in_type is ParameterInType.HEADER:
+            raise ValueError('Invalid name, name may not be one of {}'.format(self.__disallowed_header_names))
+        self.__verify_style_to_in_type(style, in_type)
+        if content is None and style is None:
+            style = self.__in_type_to_default_style[in_type]
+        if content is not None and in_type in self.__in_type_to_default_style and len(content) != 1:
+            raise ValueError('Invalid content length, content length must equal 1')
+        self.in_type = in_type
+        self.name = name
+        self.required = required
+        self.style = style
+        self.explode = explode
+        self.allow_reserved = allow_reserved
+        self.schema = schema
+        self.content = content
+
+    @staticmethod
+    def _remove_empty_and_cast(
+        in_data: typing.Tuple[typing.Tuple[str, str]],
+    ) -> typing.Dict[str, str]:
+        data = tuple(t for t in in_data if t)
+        if not data:
+            return dict()
+        return dict(data)
+
+    def _serialize_json(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        return tuple([(self.name, json.dumps(in_data))])
+
+
+class PathParameter(ParameterBase, StyleSimpleSerializer):
+
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.PATH,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    def __serialize_label(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Dict[str, str]:
+        empty_val = ((self.name, ''),)
+        prefix = '.'
+        separator = '.'
+        return self._remove_empty_and_cast(
+            self._serialize_x(
+                in_data,
+                style=ParameterStyle.LABEL,
+                name=self.name,
+                explode=self.explode,
+                empty_val=empty_val,
+                prefix=prefix,
+                separator=separator
+            )
+        )
+
+    def __serialize_matrix(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Dict[str, str]:
+        separator = ','
+        if in_data == '':
+            prefix = ';' + self.name
+        elif isinstance(in_data, (dict, list)) and self.explode:
+            prefix = ';'
+            separator = ';'
+        else:
+            prefix = ';' + self.name + '='
+        empty_val = ((self.name, ''),)
+        return self._remove_empty_and_cast(
+            self._serialize_x(
+                in_data,
+                style=ParameterStyle.MATRIX,
+                name=self.name,
+                explode=self.explode,
+                prefix=prefix,
+                empty_val=empty_val,
+                separator=separator
+            )
+        )
+
+    def _serialize_simple(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+    ) -> typing.Dict[str, str]:
+        tuple_data = self._serialize_simple_tuple(in_data, self.name, self.explode, self.in_type)
+        return self._remove_empty_and_cast(tuple_data)
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> typing.Dict[str, str]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            simple -> path
+                path:
+                    returns path_params: dict
+            label -> path
+                returns path_params
+            matrix -> path
+                returns path_params
+            """
+            if self.style:
+                if self.style is ParameterStyle.SIMPLE:
+                    return self._serialize_simple(cast_in_data)
+                elif self.style is ParameterStyle.LABEL:
+                    return self.__serialize_label(cast_in_data)
+                elif self.style is ParameterStyle.MATRIX:
+                    return self.__serialize_matrix(cast_in_data)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                tuple_data = self._serialize_json(cast_in_data)
+                return self._remove_empty_and_cast(tuple_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class QueryParameter(ParameterBase, StyleFormSerializer):
+
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.QUERY,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    def __serialize_space_delimited(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        separator = '%20'
+        empty_val = ()
+        return self._serialize_x(
+            in_data,
+            style=ParameterStyle.SPACE_DELIMITED,
+            name=self.name,
+            explode=self.explode,
+            separator=separator,
+            empty_val=empty_val
+        )
+
+    def __serialize_pipe_delimited(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list]
+    ) -> typing.Tuple[typing.Tuple[str, str], ...]:
+        separator = '|'
+        empty_val = ()
+        return self._serialize_x(
+            in_data,
+            style=ParameterStyle.PIPE_DELIMITED,
+            name=self.name,
+            explode=self.explode,
+            separator=separator,
+            empty_val=empty_val
+        )
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            form -> query
+                query:
+                    - GET/HEAD/DELETE: could use fields
+                    - PUT/POST: must use urlencode to send parameters
+                    returns fields: tuple
+            spaceDelimited -> query
+                returns fields
+            pipeDelimited -> query
+                returns fields
+            deepObject -> query, https://github.com/OAI/OpenAPI-Specification/issues/1706
+                returns fields
+            """
+            if self.style:
+                # TODO update query ones to omit setting values when [] {} or None is input
+                if self.style is ParameterStyle.FORM:
+                    return self._serialize_form(cast_in_data, explode=self.explode, name=self.name)
+                elif self.style is ParameterStyle.SPACE_DELIMITED:
+                    return self.__serialize_space_delimited(cast_in_data)
+                elif self.style is ParameterStyle.PIPE_DELIMITED:
+                    return self.__serialize_pipe_delimited(cast_in_data)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                return self._serialize_json(cast_in_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class CookieParameter(ParameterBase, StyleFormSerializer):
+
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.COOKIE,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> typing.Tuple[typing.Tuple[str, str]]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            form -> cookie
+                returns fields: tuple
+            """
+            if self.style:
+                return self._serialize_form(cast_in_data, explode=self.explode, name=self.name)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                return self._serialize_json(cast_in_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class HeaderParameter(ParameterBase, StyleSimpleSerializer):
+    def __init__(
+        self,
+        name: str,
+        required: bool = False,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: typing.Optional[bool] = None,
+        schema: typing.Optional[typing.Type[Schema]] = None,
+        content: typing.Optional[typing.Dict[str, typing.Type[Schema]]] = None
+    ):
+        super().__init__(
+            name,
+            in_type=ParameterInType.HEADER,
+            required=required,
+            style=style,
+            explode=explode,
+            allow_reserved=allow_reserved,
+            schema=schema,
+            content=content
+        )
+
+    @staticmethod
+    def __to_headers(in_data: typing.Tuple[typing.Tuple[str, str], ...]) -> HTTPHeaderDict[str, str]:
+        data = tuple(t for t in in_data if t)
+        headers = HTTPHeaderDict()
+        if not data:
+            return headers
+        headers.extend(data)
+        return headers
+
+    def _serialize_simple(
+        self,
+        in_data: typing.Union[None, int, float, str, bool, dict, list],
+    ) -> HTTPHeaderDict[str, str]:
+        tuple_data = self._serialize_simple_tuple(in_data, self.name, self.explode, self.in_type)
+        return self.__to_headers(tuple_data)
+
+    def serialize(
+        self,
+        in_data: typing.Union[
+            Schema, Decimal, int, float, str, date, datetime, None, bool, list, tuple, dict, frozendict]
+    ) -> HTTPHeaderDict[str, str]:
+        if self.schema:
+            cast_in_data = self.schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            """
+            simple -> header
+                headers: PoolManager needs a mapping, tuple is close
+                    returns headers: dict
+            """
+            if self.style:
+                return self._serialize_simple(cast_in_data)
+        # self.content will be length one
+        for content_type, schema in self.content.items():
+            cast_in_data = schema(in_data)
+            cast_in_data = self._json_encoder.default(cast_in_data)
+            if content_type == self._json_content_type:
+                tuple_data = self._serialize_json(cast_in_data)
+                return self.__to_headers(tuple_data)
+            raise NotImplementedError('Serialization of {} has not yet been implemented'.format(content_type))
+
+
+class Encoding:
+    def __init__(
+        self,
+        content_type: str,
+        headers: typing.Optional[typing.Dict[str, HeaderParameter]] = None,
+        style: typing.Optional[ParameterStyle] = None,
+        explode: bool = False,
+        allow_reserved: bool = False,
+    ):
+        self.content_type = content_type
+        self.headers = headers
+        self.style = style
+        self.explode = explode
+        self.allow_reserved = allow_reserved
+
+
+class MediaType:
+    """
+    Used to store request and response body schema information
+    encoding:
+        A map between a property name and its encoding information.
+        The key, being the property name, MUST exist in the schema as a property.
+        The encoding object SHALL only apply to requestBody objects when the media type is
+        multipart or application/x-www-form-urlencoded.
+    """
+
+    def __init__(
+        self,
+        schema: typing.Type[Schema],
+        encoding: typing.Optional[typing.Dict[str, Encoding]] = None,
+    ):
+        self.schema = schema
+        self.encoding = encoding
+
+
+@dataclass
+class ApiResponse:
+    response: urllib3.HTTPResponse
+    body: typing.Union[Unset, typing.Type[Schema]]
+    headers: typing.Union[Unset, typing.List[HeaderParameter]]
+
+    def __init__(
+        self,
+        response: urllib3.HTTPResponse,
+        body: typing.Union[Unset, typing.Type[Schema]],
+        headers: typing.Union[Unset, typing.List[HeaderParameter]]
+    ):
+        """
+        pycharm needs this to prevent 'Unexpected argument' warnings
+        """
+        self.response = response
+        self.body = body
+        self.headers = headers
+
+
+@dataclass
+class ApiResponseWithoutDeserialization(ApiResponse):
+    response: urllib3.HTTPResponse
+    body: typing.Union[Unset, typing.Type[Schema]] = unset
+    headers: typing.Union[Unset, typing.List[HeaderParameter]] = unset
+
+
+class OpenApiResponse:
+    def __init__(
+        self,
+        response_cls: typing.Type[ApiResponse] = ApiResponse,
+        content: typing.Optional[typing.Dict[str, MediaType]] = None,
+        headers: typing.Optional[typing.List[HeaderParameter]] = None,
+    ):
+        self.headers = headers
+        if content is not None and len(content) == 0:
+            raise ValueError('Invalid value for content, the content dict must have >= 1 entry')
+        self.content = content
+        self.response_cls = response_cls
+
+    @staticmethod
+    def __deserialize_json(response: urllib3.HTTPResponse) -> typing.Any:
+        decoded_data = response.data.decode("utf-8")
+        return json.loads(decoded_data)
+
+    @staticmethod
+    def __file_name_from_content_disposition(content_disposition: typing.Optional[str]) -> typing.Optional[str]:
+        if content_disposition is None:
+            return None
+        match = re.search('filename="(.+?)"', content_disposition)
+        if not match:
+            return None
+        return match.group(1)
+
+    def __deserialize_application_octet_stream(
+        self, response: urllib3.HTTPResponse
+    ) -> typing.Union[bytes, io.BufferedReader]:
+        """
+        urllib3 use cases:
+        1. when preload_content=True (stream=False) then supports_chunked_reads is False and bytes are returned
+        2. when preload_content=False (stream=True) then supports_chunked_reads is True and
+            a file will be written and returned
+        """
+        if response.supports_chunked_reads():
+            file_name = self.__file_name_from_content_disposition(response.headers.get('content-disposition'))
+
+            if file_name is None:
+                _fd, path = tempfile.mkstemp()
+            else:
+                path = os.path.join(tempfile.gettempdir(), file_name)
+            # TODO get file_name from the filename at the end of the url if it exists
+            with open(path, 'wb') as new_file:
+                chunk_size = 1024
+                while True:
+                    data = response.read(chunk_size)
+                    if not data:
+                        break
+                    new_file.write(data)
+            # release_conn is needed for streaming connections only
+            response.release_conn()
+            new_file = open(path, 'rb')
+            return new_file
+        else:
+            return response.data
+
+    def deserialize(self, response: urllib3.HTTPResponse, configuration: Configuration) -> ApiResponse:
+        content_type = response.getheader('content-type')
+        deserialized_body = unset
+        streamed = response.supports_chunked_reads()
+        if self.content is not None:
+            if content_type == 'application/json':
+                body_data = self.__deserialize_json(response)
+            elif content_type == 'application/octet-stream':
+                body_data = self.__deserialize_application_octet_stream(response)
+            else:
+                raise NotImplementedError('Deserialization of {} has not yet been implemented'.format(content_type))
+            body_schema = self.content[content_type].schema
+            _instantiation_metadata = InstantiationMetadata(from_server=True, configuration=configuration)
+            deserialized_body = body_schema._from_openapi_data(
+                body_data, _instantiation_metadata=_instantiation_metadata)
+        elif streamed:
+            response.release_conn()
+
+        deserialized_headers = unset
+        if self.headers is not None:
+            deserialized_headers = unset
+
+        return self.response_cls(
+            response=response,
+            headers=deserialized_headers,
+            body=deserialized_body
+        )
+
+
+class ApiClient:
+    """Generic API client for OpenAPI client library builds.
+
+    OpenAPI generic API client. This client handles the client-
+    server communication, and is invariant across implementations. Specifics of
+    the methods and models for each application are generated from the OpenAPI
+    templates.
+
+    NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+    Do not edit the class manually.
+
+    :param configuration: .Configuration object for this client
+    :param header_name: a header to pass when making calls to the API.
+    :param header_value: a header value to pass when making calls to
+        the API.
+    :param cookie: a cookie to include in the header when making calls
+        to the API
+    :param pool_threads: The number of threads to use for async requests
+        to the API. More threads means more concurrent API requests.
+    """
+
+    _pool = None
+    __json_encoder = JSONEncoder()
+
+    def __init__(
+        self,
+        configuration: typing.Optional[Configuration] = None,
+        header_name: typing.Optional[str] = None,
+        header_value: typing.Optional[str] = None,
+        cookie: typing.Optional[str] = None,
+        pool_threads: int = 1
+    ):
+        if configuration is None:
+            configuration = Configuration()
+        self.configuration = configuration
+        self.pool_threads = pool_threads
+
+        self.rest_client = rest.RESTClientObject(configuration)
+        self.default_headers = {}
+        if header_name is not None:
+            self.default_headers[header_name] = header_value
+        self.cookie = cookie
+        # Set default User-Agent.
+        self.user_agent = 'OpenAPI-Generator/1.0.0/python'
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.close()
+
+    def close(self):
+        if self._pool:
+            self._pool.close()
+            self._pool.join()
+            self._pool = None
+            if hasattr(atexit, 'unregister'):
+                atexit.unregister(self.close)
+
+    @property
+    def pool(self):
+        """Create thread pool on first request
+         avoids instantiating unused threadpool for blocking clients.
+        """
+        if self._pool is None:
+            atexit.register(self.close)
+            self._pool = ThreadPool(self.pool_threads)
+        return self._pool
+
+    @property
+    def user_agent(self):
+        """User agent for this API client"""
+        return self.default_headers['User-Agent']
+
+    @user_agent.setter
+    def user_agent(self, value):
+        self.default_headers['User-Agent'] = value
+
+    def set_default_header(self, header_name, header_value):
+        self.default_headers[header_name] = header_value
+
+    def __call_api(
+        self,
+        resource_path: str,
+        method: str,
+        path_params: typing.Optional[typing.Dict[str, typing.Any]] = None,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        auth_settings: typing.Optional[typing.List[str]] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        host: typing.Optional[str] = None,
+    ) -> urllib3.HTTPResponse:
+
+        # header parameters
+        headers = headers or {}
+        headers.update(self.default_headers)
+        if self.cookie:
+            headers['Cookie'] = self.cookie
+
+        # path parameters
+        if path_params:
+            for k, v in path_params.items():
+                # specified safe chars, encode everything
+                resource_path = resource_path.replace(
+                    '{%s}' % k,
+                    quote(str(v), safe=self.configuration.safe_chars_for_path_param)
+                )
+
+        # auth setting
+        self.update_params_for_auth(headers, query_params,
+                                    auth_settings, resource_path, method, body)
+
+        # request url
+        if host is None:
+            url = self.configuration.host + resource_path
+        else:
+            # use server/host defined in path or operation instead
+            url = host + resource_path
+
+        # perform request and return response
+        response = self.request(
+            method,
+            url,
+            query_params=query_params,
+            headers=headers,
+            fields=fields,
+            body=body,
+            stream=stream,
+            timeout=timeout,
+        )
+        return response
+
+    def call_api(
+        self,
+        resource_path: str,
+        method: str,
+        path_params: typing.Optional[typing.Dict[str, typing.Any]] = None,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        auth_settings: typing.Optional[typing.List[str]] = None,
+        async_req: typing.Optional[bool] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+        host: typing.Optional[str] = None,
+    ) -> urllib3.HTTPResponse:
+        """Makes the HTTP request (synchronous) and returns deserialized data.
+
+        To make an async_req request, set the async_req parameter.
+
+        :param resource_path: Path to method endpoint.
+        :param method: Method to call.
+        :param path_params: Path parameters in the url.
+        :param query_params: Query parameters in the url.
+        :param headers: Header parameters to be
+            placed in the request header.
+        :param body: Request body.
+        :param fields: Request post form parameters,
+            for `application/x-www-form-urlencoded`, `multipart/form-data`.
+        :param auth_settings: Auth Settings names for the request.
+        :param async_req: execute request asynchronously
+        :type async_req: bool, optional TODO remove, unused
+        :param stream: if True, the urllib3.HTTPResponse object will
+                                 be returned without reading/decoding response
+                                 data. Also when True, if the openapi spec describes a file download,
+                                 the data will be written to a local filesystme file and the BinarySchema
+                                 instance will also inherit from FileSchema and FileIO
+                                 Default is False.
+        :type stream: bool, optional
+        :param timeout: timeout setting for this request. If one
+                                 number provided, it will be total request
+                                 timeout. It can also be a pair (tuple) of
+                                 (connection, read) timeouts.
+        :param host: api endpoint host
+        :return:
+            If async_req parameter is True,
+            the request will be called asynchronously.
+            The method will return the request thread.
+            If parameter async_req is False or missing,
+            then the method will return the response directly.
+        """
+
+        if not async_req:
+            return self.__call_api(
+                resource_path,
+                method,
+                path_params,
+                query_params,
+                headers,
+                body,
+                fields,
+                auth_settings,
+                stream,
+                timeout,
+                host,
+            )
+
+        return self.pool.apply_async(
+            self.__call_api,
+            (
+                resource_path,
+                method,
+                path_params,
+                query_params,
+                headers,
+                body,
+                json,
+                fields,
+                auth_settings,
+                stream,
+                timeout,
+                host,
+            )
+        )
+
+    def request(
+        self,
+        method: str,
+        url: str,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+    ) -> urllib3.HTTPResponse:
+        """Makes the HTTP request using RESTClient."""
+        if method == "GET":
+            return self.rest_client.GET(url,
+                                        query_params=query_params,
+                                        stream=stream,
+                                        timeout=timeout,
+                                        headers=headers)
+        elif method == "HEAD":
+            return self.rest_client.HEAD(url,
+                                         query_params=query_params,
+                                         stream=stream,
+                                         timeout=timeout,
+                                         headers=headers)
+        elif method == "OPTIONS":
+            return self.rest_client.OPTIONS(url,
+                                            query_params=query_params,
+                                            headers=headers,
+                                            fields=fields,
+                                            stream=stream,
+                                            timeout=timeout,
+                                            body=body)
+        elif method == "POST":
+            return self.rest_client.POST(url,
+                                         query_params=query_params,
+                                         headers=headers,
+                                         fields=fields,
+                                         stream=stream,
+                                         timeout=timeout,
+                                         body=body)
+        elif method == "PUT":
+            return self.rest_client.PUT(url,
+                                        query_params=query_params,
+                                        headers=headers,
+                                        fields=fields,
+                                        stream=stream,
+                                        timeout=timeout,
+                                        body=body)
+        elif method == "PATCH":
+            return self.rest_client.PATCH(url,
+                                          query_params=query_params,
+                                          headers=headers,
+                                          fields=fields,
+                                          stream=stream,
+                                          timeout=timeout,
+                                          body=body)
+        elif method == "DELETE":
+            return self.rest_client.DELETE(url,
+                                           query_params=query_params,
+                                           headers=headers,
+                                           stream=stream,
+                                           timeout=timeout,
+                                           body=body)
+        else:
+            raise ApiValueError(
+                "http method must be `GET`, `HEAD`, `OPTIONS`,"
+                " `POST`, `PATCH`, `PUT` or `DELETE`."
+            )
+
+    def update_params_for_auth(self, headers, querys, auth_settings,
+                               resource_path, method, body):
+        """Updates header and query params based on authentication setting.
+
+        :param headers: Header parameters dict to be updated.
+        :param querys: Query parameters tuple list to be updated.
+        :param auth_settings: Authentication setting identifiers list.
+        :param resource_path: A string representation of the HTTP request resource path.
+        :param method: A string representation of the HTTP request method.
+        :param body: A object representing the body of the HTTP request.
+            The object type is the return value of _encoder.default().
+        """
+        if not auth_settings:
+            return
+
+        for auth in auth_settings:
+            auth_setting = self.configuration.auth_settings().get(auth)
+            if auth_setting:
+                if auth_setting['in'] == 'cookie':
+                    headers.add('Cookie', auth_setting['value'])
+                elif auth_setting['in'] == 'header':
+                    if auth_setting['type'] != 'http-signature':
+                        headers.add(auth_setting['key'], auth_setting['value'])
+                    else:
+                        # The HTTP signature scheme requires multiple HTTP headers
+                        # that are calculated dynamically.
+                        signing_info = self.configuration.signing_info
+                        auth_headers = signing_info.get_http_signature_headers(
+                                            resource_path, method, headers, body, querys)
+                        for key, value in auth_headers.items():
+                            headers.add(key, value)
+                elif auth_setting['in'] == 'query':
+                    querys.append((auth_setting['key'], auth_setting['value']))
+                else:
+                    raise ApiValueError(
+                        'Authentication token must be in `query` or `header`'
+                    )
+
+
+class Api:
+    """NOTE: This class is auto generated by OpenAPI Generator
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    def __init__(self, api_client: typing.Optional[ApiClient] = None):
+        if api_client is None:
+            api_client = ApiClient()
+        self.api_client = api_client
+
+    @staticmethod
+    def _verify_typed_dict_inputs(cls: typing.Type[typing.TypedDict], data: typing.Dict[str, typing.Any]):
+        """
+        Ensures that:
+        - required keys are present
+        - additional properties are not input
+        - value stored under required keys do not have the value unset
+        Note: detailed value checking is done in schema classes
+        """
+        missing_required_keys = []
+        required_keys_with_unset_values = []
+        for required_key in cls.__required_keys__:
+            if required_key not in data:
+                missing_required_keys.append(required_key)
+                continue
+            value = data[required_key]
+            if value is unset:
+                required_keys_with_unset_values.append(required_key)
+        if missing_required_keys:
+            raise ApiTypeError(
+                '{} missing {} required arguments: {}'.format(
+                    cls.__name__, len(missing_required_keys), missing_required_keys
+                 )
+             )
+        if required_keys_with_unset_values:
+            raise ApiValueError(
+                '{} contains invalid unset values for {} required keys: {}'.format(
+                    cls.__name__, len(required_keys_with_unset_values), required_keys_with_unset_values
+                )
+            )
+
+        disallowed_additional_keys = []
+        for key in data:
+            if key in cls.__required_keys__ or key in cls.__optional_keys__:
+                continue
+            disallowed_additional_keys.append(key)
+        if disallowed_additional_keys:
+            raise ApiTypeError(
+                '{} got {} unexpected keyword arguments: {}'.format(
+                    cls.__name__, len(disallowed_additional_keys), disallowed_additional_keys
+                )
+            )
+
+    def get_host(
+        self,
+        operation_id: str,
+        servers: typing.Tuple[typing.Dict[str, str], ...] = tuple(),
+        host_index: typing.Optional[int] = None
+    ) -> typing.Optional[str]:
+        configuration = self.api_client.configuration
+        try:
+            if host_index is None:
+                index = configuration.server_operation_index.get(
+                    operation_id, configuration.server_index
+                )
+            else:
+                index = host_index
+            server_variables = configuration.server_operation_variables.get(
+                operation_id, configuration.server_variables
+            )
+            host = configuration.get_host_from_settings(
+                index, variables=server_variables, servers=servers
+            )
+        except IndexError:
+            if servers:
+                raise ApiValueError(
+                    "Invalid host index. Must be 0 <= index < %s" %
+                    len(servers)
+                )
+            host = None
+        return host
+
+
+class SerializedRequestBody(typing.TypedDict, total=False):
+    body: typing.Union[str, bytes]
+    fields: typing.Tuple[typing.Union[RequestField, tuple[str, str]], ...]
+
+
+class RequestBody(StyleFormSerializer):
+    """
+    A request body parameter
+    content: content_type to MediaType Schema info
+    """
+    __json_encoder = JSONEncoder()
+
+    def __init__(
+        self,
+        content: typing.Dict[str, MediaType],
+        required: bool = False,
+    ):
+        self.required = required
+        if len(content) == 0:
+            raise ValueError('Invalid value for content, the content dict must have >= 1 entry')
+        self.content = content
+
+    def __serialize_json(
+        self,
+        in_data: typing.Any
+    ) -> typing.Dict[str, bytes]:
+        in_data = self.__json_encoder.default(in_data)
+        json_str = json.dumps(in_data, separators=(",", ":"), ensure_ascii=False).encode(
+            "utf-8"
+        )
+        return dict(body=json_str)
+
+    @staticmethod
+    def __serialize_text_plain(in_data: typing.Any) -> typing.Dict[str, str]:
+        if isinstance(in_data, frozendict):
+            raise ValueError('Unable to serialize type frozendict to text/plain')
+        elif isinstance(in_data, tuple):
+            raise ValueError('Unable to serialize type tuple to text/plain')
+        elif isinstance(in_data, NoneClass):
+            raise ValueError('Unable to serialize type NoneClass to text/plain')
+        elif isinstance(in_data, BoolClass):
+            raise ValueError('Unable to serialize type BoolClass to text/plain')
+        return dict(body=str(in_data))
+
+    def __multipart_json_item(self, key: str, value: Schema) -> RequestField:
+        json_value = self.__json_encoder.default(value)
+        return RequestField(name=key, data=json.dumps(json_value), headers={'Content-Type': 'application/json'})
+
+    def __multipart_form_item(self, key: str, value: Schema) -> RequestField:
+        if isinstance(value, str):
+            return RequestField(name=key, data=str(value), headers={'Content-Type': 'text/plain'})
+        elif isinstance(value, bytes):
+            return RequestField(name=key, data=value, headers={'Content-Type': 'application/octet-stream'})
+        elif isinstance(value, FileIO):
+            request_field = RequestField(
+                name=key,
+                data=value.read(),
+                filename=os.path.basename(value.name),
+                headers={'Content-Type': 'application/octet-stream'}
+            )
+            value.close()
+            return request_field
+        else:
+            return self.__multipart_json_item(key=key, value=value)
+
+    def __serialize_multipart_form_data(
+        self, in_data: Schema
+    ) -> typing.Dict[str, typing.Tuple[RequestField, ...]]:
+        if not isinstance(in_data, frozendict):
+            raise ValueError(f'Unable to serialize {in_data} to multipart/form-data because it is not a dict of data')
+        """
+        In a multipart/form-data request body, each schema property, or each element of a schema array property,
+        takes a section in the payload with an internal header as defined by RFC7578. The serialization strategy
+        for each property of a multipart/form-data request body can be specified in an associated Encoding Object.
+
+        When passing in multipart types, boundaries MAY be used to separate sections of the content being
+        transferred – thus, the following default Content-Types are defined for multipart:
+
+        If the (object) property is a primitive, or an array of primitive values, the default Content-Type is text/plain
+        If the property is complex, or an array of complex values, the default Content-Type is application/json
+            Question: how is the array of primitives encoded?
+        If the property is a type: string with a contentEncoding, the default Content-Type is application/octet-stream
+        """
+        fields = []
+        for key, value in in_data.items():
+            if isinstance(value, tuple):
+                if value:
+                    # values use explode = True, so the code makes a RequestField for each item with name=key
+                    for item in value:
+                        request_field = self.__multipart_form_item(key=key, value=item)
+                        fields.append(request_field)
+                else:
+                    # send an empty array as json because exploding will not send it
+                    request_field = self.__multipart_json_item(key=key, value=value)
+                    fields.append(request_field)
+            else:
+                request_field = self.__multipart_form_item(key=key, value=value)
+                fields.append(request_field)
+
+        return dict(fields=tuple(fields))
+
+    def __serialize_application_octet_stream(self, in_data: BinarySchema) -> typing.Dict[str, bytes]:
+        if isinstance(in_data, bytes):
+            return dict(body=in_data)
+        # FileIO type
+        result = dict(body=in_data.read())
+        in_data.close()
+        return result
+
+    def __serialize_application_x_www_form_data(
+        self, in_data: typing.Any
+    ) -> typing.Dict[str, tuple[tuple[str, str], ...]]:
+        if not isinstance(in_data, frozendict):
+            raise ValueError(
+                f'Unable to serialize {in_data} to application/x-www-form-urlencoded because it is not a dict of data')
+        cast_in_data = self.__json_encoder.default(in_data)
+        fields = self._serialize_form(cast_in_data, explode=True, name='')
+        if not fields:
+            return {}
+        return {'fields': fields}
+
+    def serialize(
+        self, in_data: typing.Any, content_type: str
+    ) -> SerializedRequestBody:
+        """
+        If a str is returned then the result will be assigned to data when making the request
+        If a tuple is returned then the result will be used as fields input in encode_multipart_formdata
+        Return a tuple of
+
+        The key of the return dict is
+        - body for application/json
+        - encode_multipart and fields for multipart/form-data
+        """
+        media_type = self.content[content_type]
+        if isinstance(in_data, media_type.schema):
+            cast_in_data = in_data
+        elif isinstance(in_data, (dict, frozendict)) and in_data:
+            cast_in_data = media_type.schema(**in_data)
+        else:
+            cast_in_data = media_type.schema(in_data)
+        # TODO check for and use encoding if it exists
+        # and content_type is multipart or application/x-www-form-urlencoded
+        if content_type == 'application/json':
+            return self.__serialize_json(cast_in_data)
+        elif content_type == 'text/plain':
+            return self.__serialize_text_plain(cast_in_data)
+        elif content_type == 'multipart/form-data':
+            return self.__serialize_multipart_form_data(cast_in_data)
+        elif content_type == 'application/x-www-form-urlencoded':
+            return self.__serialize_application_x_www_form_data(cast_in_data)
+        elif content_type == 'application/octet-stream':
+            return self.__serialize_application_octet_stream(cast_in_data)
+        raise NotImplementedError('Serialization has not yet been implemented for {}'.format(content_type))
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/apis/__init__.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/apis/__init__.py
new file mode 100644
index 00000000000..5a98862bba0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/apis/__init__.py
@@ -0,0 +1,24 @@
+# coding: utf-8
+
+# flake8: noqa
+
+# Import all APIs into this package.
+# If you have many APIs here with many many models used in each API this may
+# raise a `RecursionError`.
+# In order to avoid this, import only the API that you directly need like:
+#
+#   from .api.another_fake_api import AnotherFakeApi
+#
+# or import this package, but before doing it, use:
+#
+#   import sys
+#   sys.setrecursionlimit(n)
+
+# Import APIs into API package:
+from petstore_api.api.another_fake_api import AnotherFakeApi
+from petstore_api.api.default_api import DefaultApi
+from petstore_api.api.fake_api import FakeApi
+from petstore_api.api.fake_classname_tags_123_api import FakeClassnameTags123Api
+from petstore_api.api.pet_api import PetApi
+from petstore_api.api.store_api import StoreApi
+from petstore_api.api.user_api import UserApi
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/configuration.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/configuration.py
new file mode 100644
index 00000000000..f7c2a3ff91e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/configuration.py
@@ -0,0 +1,610 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import copy
+import logging
+import multiprocessing
+import sys
+import urllib3
+
+from http import client as http_client
+from petstore_api.exceptions import ApiValueError
+
+
+JSON_SCHEMA_VALIDATION_KEYWORDS = {
+    'multipleOf', 'maximum', 'exclusiveMaximum',
+    'minimum', 'exclusiveMinimum', 'maxLength',
+    'minLength', 'pattern', 'maxItems', 'minItems',
+    'uniqueItems', 'maxProperties', 'minProperties',
+}
+
+class Configuration(object):
+    """NOTE: This class is auto generated by OpenAPI Generator
+
+    Ref: https://openapi-generator.tech
+    Do not edit the class manually.
+
+    :param host: Base url
+    :param api_key: Dict to store API key(s).
+      Each entry in the dict specifies an API key.
+      The dict key is the name of the security scheme in the OAS specification.
+      The dict value is the API key secret.
+    :param api_key_prefix: Dict to store API prefix (e.g. Bearer)
+      The dict key is the name of the security scheme in the OAS specification.
+      The dict value is an API key prefix when generating the auth data.
+    :param username: Username for HTTP basic authentication
+    :param password: Password for HTTP basic authentication
+    :param discard_unknown_keys: Boolean value indicating whether to discard
+      unknown properties. A server may send a response that includes additional
+      properties that are not known by the client in the following scenarios:
+      1. The OpenAPI document is incomplete, i.e. it does not match the server
+         implementation.
+      2. The client was generated using an older version of the OpenAPI document
+         and the server has been upgraded since then.
+      If a schema in the OpenAPI document defines the additionalProperties attribute,
+      then all undeclared properties received by the server are injected into the
+      additional properties map. In that case, there are undeclared properties, and
+      nothing to discard.
+    :param disabled_client_side_validations (string): Comma-separated list of
+      JSON schema validation keywords to disable JSON schema structural validation
+      rules. The following keywords may be specified: multipleOf, maximum,
+      exclusiveMaximum, minimum, exclusiveMinimum, maxLength, minLength, pattern,
+      maxItems, minItems.
+      By default, the validation is performed for data generated locally by the client
+      and data received from the server, independent of any validation performed by
+      the server side. If the input data does not satisfy the JSON schema validation
+      rules specified in the OpenAPI document, an exception is raised.
+      If disabled_client_side_validations is set, structural validation is
+      disabled. This can be useful to troubleshoot data validation problem, such as
+      when the OpenAPI document validation rules do not match the actual API data
+      received by the server.
+    :param signing_info: Configuration parameters for the HTTP signature security scheme.
+        Must be an instance of petstore_api.signing.HttpSigningConfiguration
+    :param server_index: Index to servers configuration.
+    :param server_variables: Mapping with string values to replace variables in
+      templated server configuration. The validation of enums is performed for
+      variables with defined enum values before.
+    :param server_operation_index: Mapping from operation ID to an index to server
+      configuration.
+    :param server_operation_variables: Mapping from operation ID to a mapping with
+      string values to replace variables in templated server configuration.
+      The validation of enums is performed for variables with defined enum values before.
+
+    :Example:
+
+    API Key Authentication Example.
+    Given the following security scheme in the OpenAPI specification:
+      components:
+        securitySchemes:
+          cookieAuth:         # name for the security scheme
+            type: apiKey
+            in: cookie
+            name: JSESSIONID  # cookie name
+
+    You can programmatically set the cookie:
+
+conf = petstore_api.Configuration(
+    api_key={'cookieAuth': 'abc123'}
+    api_key_prefix={'cookieAuth': 'JSESSIONID'}
+)
+
+    The following cookie will be added to the HTTP request:
+       Cookie: JSESSIONID abc123
+
+    HTTP Basic Authentication Example.
+    Given the following security scheme in the OpenAPI specification:
+      components:
+        securitySchemes:
+          http_basic_auth:
+            type: http
+            scheme: basic
+
+    Configure API client with HTTP basic authentication:
+
+conf = petstore_api.Configuration(
+    username='the-user',
+    password='the-password',
+)
+
+
+    HTTP Signature Authentication Example.
+    Given the following security scheme in the OpenAPI specification:
+      components:
+        securitySchemes:
+          http_basic_auth:
+            type: http
+            scheme: signature
+
+    Configure API client with HTTP signature authentication. Use the 'hs2019' signature scheme,
+    sign the HTTP requests with the RSA-SSA-PSS signature algorithm, and set the expiration time
+    of the signature to 5 minutes after the signature has been created.
+    Note you can use the constants defined in the petstore_api.signing module, and you can
+    also specify arbitrary HTTP headers to be included in the HTTP signature, except for the
+    'Authorization' header, which is used to carry the signature.
+
+    One may be tempted to sign all headers by default, but in practice it rarely works.
+    This is beccause explicit proxies, transparent proxies, TLS termination endpoints or
+    load balancers may add/modify/remove headers. Include the HTTP headers that you know
+    are not going to be modified in transit.
+
+conf = petstore_api.Configuration(
+    signing_info = petstore_api.signing.HttpSigningConfiguration(
+        key_id =                 'my-key-id',
+        private_key_path =       'rsa.pem',
+        signing_scheme =         petstore_api.signing.SCHEME_HS2019,
+        signing_algorithm =      petstore_api.signing.ALGORITHM_RSASSA_PSS,
+        signed_headers =         [petstore_api.signing.HEADER_REQUEST_TARGET,
+                                    petstore_api.signing.HEADER_CREATED,
+                                    petstore_api.signing.HEADER_EXPIRES,
+                                    petstore_api.signing.HEADER_HOST,
+                                    petstore_api.signing.HEADER_DATE,
+                                    petstore_api.signing.HEADER_DIGEST,
+                                    'Content-Type',
+                                    'User-Agent'
+                                    ],
+        signature_max_validity = datetime.timedelta(minutes=5)
+    )
+)
+    """
+
+    _default = None
+
+    def __init__(self, host=None,
+                 api_key=None, api_key_prefix=None,
+                 username=None, password=None,
+                 discard_unknown_keys=False,
+                 disabled_client_side_validations="",
+                 signing_info=None,
+                 server_index=None, server_variables=None,
+                 server_operation_index=None, server_operation_variables=None,
+                 ):
+        """Constructor
+        """
+        self._base_path = "http://petstore.swagger.io:80/v2" if host is None else host
+        """Default Base url
+        """
+        self.server_index = 0 if server_index is None and host is None else server_index
+        self.server_operation_index = server_operation_index or {}
+        """Default server index
+        """
+        self.server_variables = server_variables or {}
+        self.server_operation_variables = server_operation_variables or {}
+        """Default server variables
+        """
+        self.temp_folder_path = None
+        """Temp file folder for downloading files
+        """
+        # Authentication Settings
+        self.api_key = {}
+        if api_key:
+            self.api_key = api_key
+        """dict to store API key(s)
+        """
+        self.api_key_prefix = {}
+        if api_key_prefix:
+            self.api_key_prefix = api_key_prefix
+        """dict to store API prefix (e.g. Bearer)
+        """
+        self.refresh_api_key_hook = None
+        """function hook to refresh API key if expired
+        """
+        self.username = username
+        """Username for HTTP basic authentication
+        """
+        self.password = password
+        """Password for HTTP basic authentication
+        """
+        self.discard_unknown_keys = discard_unknown_keys
+        self.disabled_client_side_validations = disabled_client_side_validations
+        if signing_info is not None:
+            signing_info.host = host
+        self.signing_info = signing_info
+        """The HTTP signing configuration
+        """
+        self.access_token = None
+        """access token for OAuth/Bearer
+        """
+        self.logger = {}
+        """Logging Settings
+        """
+        self.logger["package_logger"] = logging.getLogger("petstore_api")
+        self.logger["urllib3_logger"] = logging.getLogger("urllib3")
+        self.logger_format = '%(asctime)s %(levelname)s %(message)s'
+        """Log format
+        """
+        self.logger_stream_handler = None
+        """Log stream handler
+        """
+        self.logger_file_handler = None
+        """Log file handler
+        """
+        self.logger_file = None
+        """Debug file location
+        """
+        self.debug = False
+        """Debug switch
+        """
+
+        self.verify_ssl = True
+        """SSL/TLS verification
+           Set this to false to skip verifying SSL certificate when calling API
+           from https server.
+        """
+        self.ssl_ca_cert = None
+        """Set this to customize the certificate file to verify the peer.
+        """
+        self.cert_file = None
+        """client certificate file
+        """
+        self.key_file = None
+        """client key file
+        """
+        self.assert_hostname = None
+        """Set this to True/False to enable/disable SSL hostname verification.
+        """
+
+        self.connection_pool_maxsize = multiprocessing.cpu_count() * 5
+        """urllib3 connection pool's maximum number of connections saved
+           per pool. urllib3 uses 1 connection as default value, but this is
+           not the best value when you are making a lot of possibly parallel
+           requests to the same host, which is often the case here.
+           cpu_count * 5 is used as default value to increase performance.
+        """
+
+        self.proxy = None
+        """Proxy URL
+        """
+        self.proxy_headers = None
+        """Proxy headers
+        """
+        self.safe_chars_for_path_param = ''
+        """Safe chars for path_param
+        """
+        self.retries = None
+        """Adding retries to override urllib3 default value 3
+        """
+        # Enable client side validation
+        self.client_side_validation = True
+
+        # Options to pass down to the underlying urllib3 socket
+        self.socket_options = None
+
+    def __deepcopy__(self, memo):
+        cls = self.__class__
+        result = cls.__new__(cls)
+        memo[id(self)] = result
+        for k, v in self.__dict__.items():
+            if k not in ('logger', 'logger_file_handler'):
+                setattr(result, k, copy.deepcopy(v, memo))
+        # shallow copy of loggers
+        result.logger = copy.copy(self.logger)
+        # use setters to configure loggers
+        result.logger_file = self.logger_file
+        result.debug = self.debug
+        return result
+
+    def __setattr__(self, name, value):
+        object.__setattr__(self, name, value)
+        if name == 'disabled_client_side_validations':
+            s = set(filter(None, value.split(',')))
+            for v in s:
+                if v not in JSON_SCHEMA_VALIDATION_KEYWORDS:
+                    raise ApiValueError(
+                        "Invalid keyword: '{0}''".format(v))
+            self._disabled_client_side_validations = s
+        if name == "signing_info" and value is not None:
+            # Ensure the host paramater from signing info is the same as
+            # Configuration.host.
+            value.host = self.host
+
+    @classmethod
+    def set_default(cls, default):
+        """Set default instance of configuration.
+
+        It stores default configuration, which can be
+        returned by get_default_copy method.
+
+        :param default: object of Configuration
+        """
+        cls._default = copy.deepcopy(default)
+
+    @classmethod
+    def get_default_copy(cls):
+        """Return new instance of configuration.
+
+        This method returns newly created, based on default constructor,
+        object of Configuration class or returns a copy of default
+        configuration passed by the set_default method.
+
+        :return: The configuration object.
+        """
+        if cls._default is not None:
+            return copy.deepcopy(cls._default)
+        return Configuration()
+
+    @property
+    def logger_file(self):
+        """The logger file.
+
+        If the logger_file is None, then add stream handler and remove file
+        handler. Otherwise, add file handler and remove stream handler.
+
+        :param value: The logger_file path.
+        :type: str
+        """
+        return self.__logger_file
+
+    @logger_file.setter
+    def logger_file(self, value):
+        """The logger file.
+
+        If the logger_file is None, then add stream handler and remove file
+        handler. Otherwise, add file handler and remove stream handler.
+
+        :param value: The logger_file path.
+        :type: str
+        """
+        self.__logger_file = value
+        if self.__logger_file:
+            # If set logging file,
+            # then add file handler and remove stream handler.
+            self.logger_file_handler = logging.FileHandler(self.__logger_file)
+            self.logger_file_handler.setFormatter(self.logger_formatter)
+            for _, logger in self.logger.items():
+                logger.addHandler(self.logger_file_handler)
+
+    @property
+    def debug(self):
+        """Debug status
+
+        :param value: The debug status, True or False.
+        :type: bool
+        """
+        return self.__debug
+
+    @debug.setter
+    def debug(self, value):
+        """Debug status
+
+        :param value: The debug status, True or False.
+        :type: bool
+        """
+        self.__debug = value
+        if self.__debug:
+            # if debug status is True, turn on debug logging
+            for _, logger in self.logger.items():
+                logger.setLevel(logging.DEBUG)
+            # turn on http_client debug
+            http_client.HTTPConnection.debuglevel = 1
+        else:
+            # if debug status is False, turn off debug logging,
+            # setting log level to default `logging.WARNING`
+            for _, logger in self.logger.items():
+                logger.setLevel(logging.WARNING)
+            # turn off http_client debug
+            http_client.HTTPConnection.debuglevel = 0
+
+    @property
+    def logger_format(self):
+        """The logger format.
+
+        The logger_formatter will be updated when sets logger_format.
+
+        :param value: The format string.
+        :type: str
+        """
+        return self.__logger_format
+
+    @logger_format.setter
+    def logger_format(self, value):
+        """The logger format.
+
+        The logger_formatter will be updated when sets logger_format.
+
+        :param value: The format string.
+        :type: str
+        """
+        self.__logger_format = value
+        self.logger_formatter = logging.Formatter(self.__logger_format)
+
+    def get_api_key_with_prefix(self, identifier, alias=None):
+        """Gets API key (with prefix if set).
+
+        :param identifier: The identifier of apiKey.
+        :param alias: The alternative identifier of apiKey.
+        :return: The token for api key authentication.
+        """
+        if self.refresh_api_key_hook is not None:
+            self.refresh_api_key_hook(self)
+        key = self.api_key.get(identifier, self.api_key.get(alias) if alias is not None else None)
+        if key:
+            prefix = self.api_key_prefix.get(identifier)
+            if prefix:
+                return "%s %s" % (prefix, key)
+            else:
+                return key
+
+    def get_basic_auth_token(self):
+        """Gets HTTP basic authentication header (string).
+
+        :return: The token for basic HTTP authentication.
+        """
+        username = ""
+        if self.username is not None:
+            username = self.username
+        password = ""
+        if self.password is not None:
+            password = self.password
+        return urllib3.util.make_headers(
+            basic_auth=username + ':' + password
+        ).get('authorization')
+
+    def auth_settings(self):
+        """Gets Auth Settings dict for api client.
+
+        :return: The Auth Settings information dict.
+        """
+        auth = {}
+        if 'api_key' in self.api_key:
+            auth['api_key'] = {
+                'type': 'api_key',
+                'in': 'header',
+                'key': 'api_key',
+                'value': self.get_api_key_with_prefix(
+                    'api_key',
+                ),
+            }
+        if 'api_key_query' in self.api_key:
+            auth['api_key_query'] = {
+                'type': 'api_key',
+                'in': 'query',
+                'key': 'api_key_query',
+                'value': self.get_api_key_with_prefix(
+                    'api_key_query',
+                ),
+            }
+        if self.access_token is not None:
+            auth['bearer_test'] = {
+                'type': 'bearer',
+                'in': 'header',
+                'format': 'JWT',
+                'key': 'Authorization',
+                'value': 'Bearer ' + self.access_token
+            }
+        if self.username is not None and self.password is not None:
+            auth['http_basic_test'] = {
+                'type': 'basic',
+                'in': 'header',
+                'key': 'Authorization',
+                'value': self.get_basic_auth_token()
+            }
+        if self.signing_info is not None:
+            auth['http_signature_test'] = {
+                'type': 'http-signature',
+                'in': 'header',
+                'key': 'Authorization',
+                'value': None  # Signature headers are calculated for every HTTP request
+            }
+        if self.access_token is not None:
+            auth['petstore_auth'] = {
+                'type': 'oauth2',
+                'in': 'header',
+                'key': 'Authorization',
+                'value': 'Bearer ' + self.access_token
+            }
+        return auth
+
+    def to_debug_report(self):
+        """Gets the essential information for debugging.
+
+        :return: The report for debugging.
+        """
+        return "Python SDK Debug Report:\n"\
+               "OS: {env}\n"\
+               "Python Version: {pyversion}\n"\
+               "Version of the API: 1.0.0\n"\
+               "SDK Package Version: 1.0.0".\
+               format(env=sys.platform, pyversion=sys.version)
+
+    def get_host_settings(self):
+        """Gets an array of host settings
+
+        :return: An array of host settings
+        """
+        return [
+            {
+                'url': "http://{server}.swagger.io:{port}/v2",
+                'description': "petstore server",
+                'variables': {
+                    'server': {
+                        'description': "No description provided",
+                        'default_value': "petstore",
+                        'enum_values': [
+                            "petstore",
+                            "qa-petstore",
+                            "dev-petstore"
+                        ]
+                        },
+                    'port': {
+                        'description': "No description provided",
+                        'default_value': "80",
+                        'enum_values': [
+                            "80",
+                            "8080"
+                        ]
+                        }
+                    }
+            },
+            {
+                'url': "https://localhost:8080/{version}",
+                'description': "The local server",
+                'variables': {
+                    'version': {
+                        'description': "No description provided",
+                        'default_value': "v2",
+                        'enum_values': [
+                            "v1",
+                            "v2"
+                        ]
+                        }
+                    }
+            }
+        ]
+
+    def get_host_from_settings(self, index, variables=None, servers=None):
+        """Gets host URL based on the index and variables
+        :param index: array index of the host settings
+        :param variables: hash of variable and the corresponding value
+        :param servers: an array of host settings or None
+        :return: URL based on host settings
+        """
+        if index is None:
+            return self._base_path
+
+        variables = {} if variables is None else variables
+        servers = self.get_host_settings() if servers is None else servers
+
+        try:
+            server = servers[index]
+        except IndexError:
+            raise ValueError(
+                "Invalid index {0} when selecting the host settings. "
+                "Must be less than {1}".format(index, len(servers)))
+
+        url = server['url']
+
+        # go through variables and replace placeholders
+        for variable_name, variable in server.get('variables', {}).items():
+            used_value = variables.get(
+                variable_name, variable['default_value'])
+
+            if 'enum_values' in variable \
+                    and used_value not in variable['enum_values']:
+                raise ValueError(
+                    "The variable `{0}` in the host URL has invalid value "
+                    "{1}. Must be {2}.".format(
+                        variable_name, variables[variable_name],
+                        variable['enum_values']))
+
+            url = url.replace("{" + variable_name + "}", used_value)
+
+        return url
+
+    @property
+    def host(self):
+        """Return generated host."""
+        return self.get_host_from_settings(self.server_index, variables=self.server_variables)
+
+    @host.setter
+    def host(self, value):
+        """Fix base path."""
+        self._base_path = value
+        self.server_index = None
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/exceptions.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/exceptions.py
new file mode 100644
index 00000000000..ed422fd2d0e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/exceptions.py
@@ -0,0 +1,136 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+class OpenApiException(Exception):
+    """The base exception class for all OpenAPIExceptions"""
+
+
+class ApiTypeError(OpenApiException, TypeError):
+    def __init__(self, msg, path_to_item=None, valid_classes=None,
+                 key_type=None):
+        """ Raises an exception for TypeErrors
+
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (list): a list of keys an indices to get to the
+                                 current_item
+                                 None if unset
+            valid_classes (tuple): the primitive classes that current item
+                                   should be an instance of
+                                   None if unset
+            key_type (bool): False if our value is a value in a dict
+                             True if it is a key in a dict
+                             False if our item is an item in a list
+                             None if unset
+        """
+        self.path_to_item = path_to_item
+        self.valid_classes = valid_classes
+        self.key_type = key_type
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiTypeError, self).__init__(full_msg)
+
+
+class ApiValueError(OpenApiException, ValueError):
+    def __init__(self, msg, path_to_item=None):
+        """
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (list) the path to the exception in the
+                received_data dict. None if unset
+        """
+
+        self.path_to_item = path_to_item
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiValueError, self).__init__(full_msg)
+
+
+class ApiAttributeError(OpenApiException, AttributeError):
+    def __init__(self, msg, path_to_item=None):
+        """
+        Raised when an attribute reference or assignment fails.
+
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (None/list) the path to the exception in the
+                received_data dict
+        """
+        self.path_to_item = path_to_item
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiAttributeError, self).__init__(full_msg)
+
+
+class ApiKeyError(OpenApiException, KeyError):
+    def __init__(self, msg, path_to_item=None):
+        """
+        Args:
+            msg (str): the exception message
+
+        Keyword Args:
+            path_to_item (None/list) the path to the exception in the
+                received_data dict
+        """
+        self.path_to_item = path_to_item
+        full_msg = msg
+        if path_to_item:
+            full_msg = "{0} at {1}".format(msg, render_path(path_to_item))
+        super(ApiKeyError, self).__init__(full_msg)
+
+
+class ApiException(OpenApiException):
+
+    def __init__(self, status=None, reason=None, api_response: 'petstore_api.api_client.ApiResponse' = None):
+        if api_response:
+            self.status = api_response.response.status
+            self.reason = api_response.response.reason
+            self.body = api_response.response.data
+            self.headers = api_response.response.getheaders()
+        else:
+            self.status = status
+            self.reason = reason
+            self.body = None
+            self.headers = None
+
+    def __str__(self):
+        """Custom error messages for exception"""
+        error_message = "({0})\n"\
+                        "Reason: {1}\n".format(self.status, self.reason)
+        if self.headers:
+            error_message += "HTTP response headers: {0}\n".format(
+                self.headers)
+
+        if self.body:
+            error_message += "HTTP response body: {0}\n".format(self.body)
+
+        return error_message
+
+
+def render_path(path_to_item):
+    """Returns a string representation of a path"""
+    result = ""
+    for pth in path_to_item:
+        if isinstance(pth, int):
+            result += "[{0}]".format(pth)
+        else:
+            result += "['{0}']".format(pth)
+    return result
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/__init__.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/__init__.py
new file mode 100644
index 00000000000..027452f37a8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/__init__.py
@@ -0,0 +1,5 @@
+# we can not import model classes here because that would create a circular
+# reference which would not work in python2
+# do not import all models into this module because that uses a lot of memory and stack frames
+# if you need the ability to import all models from one package, import them with
+# from petstore_api.models import ModelA, ModelB
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/additional_properties_class.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/additional_properties_class.py
new file mode 100644
index 00000000000..8301d14cf86
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/additional_properties_class.py
@@ -0,0 +1,200 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class AdditionalPropertiesClass(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class map_property(
+        DictSchema
+    ):
+        _additional_properties = StrSchema
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'map_property':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    
+    
+    class map_of_map_property(
+        DictSchema
+    ):
+        
+        
+        class _additional_properties(
+            DictSchema
+        ):
+            _additional_properties = StrSchema
+        
+        
+            def __new__(
+                cls,
+                *args: typing.Union[dict, frozendict, ],
+                _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+                **kwargs: typing.Type[Schema],
+            ) -> '_additional_properties':
+                return super().__new__(
+                    cls,
+                    *args,
+                    _instantiation_metadata=_instantiation_metadata,
+                    **kwargs,
+                )
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'map_of_map_property':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    anytype_1 = AnyTypeSchema
+    map_with_undeclared_properties_anytype_1 = DictSchema
+    map_with_undeclared_properties_anytype_2 = DictSchema
+    map_with_undeclared_properties_anytype_3 = DictSchema
+    
+    
+    class empty_map(
+        DictSchema
+    ):
+        _additional_properties = None
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'empty_map':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class map_with_undeclared_properties_string(
+        DictSchema
+    ):
+        _additional_properties = StrSchema
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'map_with_undeclared_properties_string':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        map_property: typing.Union[map_property, Unset] = unset,
+        map_of_map_property: typing.Union[map_of_map_property, Unset] = unset,
+        anytype_1: typing.Union[anytype_1, Unset] = unset,
+        map_with_undeclared_properties_anytype_1: typing.Union[map_with_undeclared_properties_anytype_1, Unset] = unset,
+        map_with_undeclared_properties_anytype_2: typing.Union[map_with_undeclared_properties_anytype_2, Unset] = unset,
+        map_with_undeclared_properties_anytype_3: typing.Union[map_with_undeclared_properties_anytype_3, Unset] = unset,
+        empty_map: typing.Union[empty_map, Unset] = unset,
+        map_with_undeclared_properties_string: typing.Union[map_with_undeclared_properties_string, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'AdditionalPropertiesClass':
+        return super().__new__(
+            cls,
+            *args,
+            map_property=map_property,
+            map_of_map_property=map_of_map_property,
+            anytype_1=anytype_1,
+            map_with_undeclared_properties_anytype_1=map_with_undeclared_properties_anytype_1,
+            map_with_undeclared_properties_anytype_2=map_with_undeclared_properties_anytype_2,
+            map_with_undeclared_properties_anytype_3=map_with_undeclared_properties_anytype_3,
+            empty_map=empty_map,
+            map_with_undeclared_properties_string=map_with_undeclared_properties_string,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/additional_properties_with_array_of_enums.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/additional_properties_with_array_of_enums.py
new file mode 100644
index 00000000000..90d612a857a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/additional_properties_with_array_of_enums.py
@@ -0,0 +1,95 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class AdditionalPropertiesWithArrayOfEnums(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class _additional_properties(
+        ListSchema
+    ):
+    
+        @classmethod
+        @property
+        def _items(cls) -> typing.Type['EnumClass']:
+            return EnumClass
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'AdditionalPropertiesWithArrayOfEnums':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.enum_class import EnumClass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/address.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/address.py
new file mode 100644
index 00000000000..95e55511dca
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/address.py
@@ -0,0 +1,84 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Address(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _additional_properties = IntSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Address':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/animal.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/animal.py
new file mode 100644
index 00000000000..f0dc6441d3e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/animal.py
@@ -0,0 +1,105 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Animal(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'className',
+    ))
+    className = StrSchema
+    color = StrSchema
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'className': {
+                'Cat': Cat,
+                'Dog': Dog,
+            }
+        }
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        className: className,
+        color: typing.Union[color, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Animal':
+        return super().__new__(
+            cls,
+            *args,
+            className=className,
+            color=color,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.cat import Cat
+from petstore_api.model.dog import Dog
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/animal_farm.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/animal_farm.py
new file mode 100644
index 00000000000..2bb3d0259c8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/animal_farm.py
@@ -0,0 +1,76 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class AnimalFarm(
+    ListSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['Animal']:
+        return Animal
+
+from petstore_api.model.animal import Animal
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/api_response.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/api_response.py
new file mode 100644
index 00000000000..41f336ea8bc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/api_response.py
@@ -0,0 +1,92 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ApiResponse(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    code = Int32Schema
+    type = StrSchema
+    message = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        code: typing.Union[code, Unset] = unset,
+        type: typing.Union[type, Unset] = unset,
+        message: typing.Union[message, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ApiResponse':
+        return super().__new__(
+            cls,
+            *args,
+            code=code,
+            type=type,
+            message=message,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/apple.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/apple.py
new file mode 100644
index 00000000000..05b8485a74d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/apple.py
@@ -0,0 +1,115 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Apple(
+    _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+    DictBase,
+    NoneBase,
+    Schema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'cultivar',
+    ))
+    
+    
+    class cultivar(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'^[a-zA-Z\s]*$',  # noqa: E501
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+    
+    
+    class origin(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'^[A-Z\s]*$',  # noqa: E501
+                'flags': (
+                    re.IGNORECASE
+                )
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, None, ],
+        origin: typing.Union[origin, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Apple':
+        return super().__new__(
+            cls,
+            *args,
+            origin=origin,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/apple_req.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/apple_req.py
new file mode 100644
index 00000000000..df315c8bf1c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/apple_req.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class AppleReq(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'cultivar',
+    ))
+    cultivar = StrSchema
+    mealy = BoolSchema
+    _additional_properties = None
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        cultivar: cultivar,
+        mealy: typing.Union[mealy, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'AppleReq':
+        return super().__new__(
+            cls,
+            *args,
+            cultivar=cultivar,
+            mealy=mealy,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_holding_any_type.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_holding_any_type.py
new file mode 100644
index 00000000000..51e9aeeb603
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_holding_any_type.py
@@ -0,0 +1,70 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ArrayHoldingAnyType(
+    ListSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _items = AnyTypeSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_array_of_number_only.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_array_of_number_only.py
new file mode 100644
index 00000000000..06912cc2194
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_array_of_number_only.py
@@ -0,0 +1,96 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ArrayOfArrayOfNumberOnly(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class ArrayArrayNumber(
+        ListSchema
+    ):
+        
+        
+        class _items(
+            ListSchema
+        ):
+            _items = NumberSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        ArrayArrayNumber: typing.Union[ArrayArrayNumber, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ArrayOfArrayOfNumberOnly':
+        return super().__new__(
+            cls,
+            *args,
+            ArrayArrayNumber=ArrayArrayNumber,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_enums.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_enums.py
new file mode 100644
index 00000000000..19af3dc1e9f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_enums.py
@@ -0,0 +1,76 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ArrayOfEnums(
+    ListSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _items(cls) -> typing.Type['StringEnum']:
+        return StringEnum
+
+from petstore_api.model.string_enum import StringEnum
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_number_only.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_number_only.py
new file mode 100644
index 00000000000..c2d568e4b80
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_of_number_only.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ArrayOfNumberOnly(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class ArrayNumber(
+        ListSchema
+    ):
+        _items = NumberSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        ArrayNumber: typing.Union[ArrayNumber, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ArrayOfNumberOnly':
+        return super().__new__(
+            cls,
+            *args,
+            ArrayNumber=ArrayNumber,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_test.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_test.py
new file mode 100644
index 00000000000..00d72319a69
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_test.py
@@ -0,0 +1,123 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ArrayTest(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class array_of_string(
+        ListSchema
+    ):
+        _items = StrSchema
+    
+    
+    class array_array_of_integer(
+        ListSchema
+    ):
+        
+        
+        class _items(
+            ListSchema
+        ):
+            _items = Int64Schema
+    
+    
+    class array_array_of_model(
+        ListSchema
+    ):
+        
+        
+        class _items(
+            ListSchema
+        ):
+        
+            @classmethod
+            @property
+            def _items(cls) -> typing.Type['ReadOnlyFirst']:
+                return ReadOnlyFirst
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        array_of_string: typing.Union[array_of_string, Unset] = unset,
+        array_array_of_integer: typing.Union[array_array_of_integer, Unset] = unset,
+        array_array_of_model: typing.Union[array_array_of_model, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ArrayTest':
+        return super().__new__(
+            cls,
+            *args,
+            array_of_string=array_of_string,
+            array_array_of_integer=array_array_of_integer,
+            array_array_of_model=array_array_of_model,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.read_only_first import ReadOnlyFirst
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_with_validations_in_items.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_with_validations_in_items.py
new file mode 100644
index 00000000000..07b32f95f67
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/array_with_validations_in_items.py
@@ -0,0 +1,81 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ArrayWithValidationsInItems(
+    _SchemaValidator(
+        max_items=2,
+    ),
+    ListSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class _items(
+        _SchemaValidator(
+            inclusive_maximum=7,
+        ),
+        Int64Schema
+    ):
+        pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/banana.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/banana.py
new file mode 100644
index 00000000000..4cb4561abe2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/banana.py
@@ -0,0 +1,89 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Banana(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'lengthCm',
+    ))
+    lengthCm = NumberSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        lengthCm: lengthCm,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Banana':
+        return super().__new__(
+            cls,
+            *args,
+            lengthCm=lengthCm,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/banana_req.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/banana_req.py
new file mode 100644
index 00000000000..b7012234a08
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/banana_req.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class BananaReq(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'lengthCm',
+    ))
+    lengthCm = NumberSchema
+    sweet = BoolSchema
+    _additional_properties = None
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        lengthCm: lengthCm,
+        sweet: typing.Union[sweet, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'BananaReq':
+        return super().__new__(
+            cls,
+            *args,
+            lengthCm=lengthCm,
+            sweet=sweet,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/bar.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/bar.py
new file mode 100644
index 00000000000..61b13533570
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/bar.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+Bar = StrSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/basque_pig.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/basque_pig.py
new file mode 100644
index 00000000000..f1e74bf1e46
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/basque_pig.py
@@ -0,0 +1,103 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class BasquePig(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'className',
+    ))
+    
+    
+    class className(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "BasquePig": "BASQUEPIG",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def BASQUEPIG(cls):
+            return cls._enum_by_value["BasquePig"]("BasquePig")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        className: className,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'BasquePig':
+        return super().__new__(
+            cls,
+            *args,
+            className=className,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/boolean.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/boolean.py
new file mode 100644
index 00000000000..3f35ab6a653
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/boolean.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+Boolean = BoolSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/boolean_enum.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/boolean_enum.py
new file mode 100644
index 00000000000..cf75f7c9445
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/boolean_enum.py
@@ -0,0 +1,79 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class BooleanEnum(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            True: "TRUE",
+        }
+    ),
+    BoolSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def TRUE(cls):
+        return cls._enum_by_value[True](True)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/capitalization.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/capitalization.py
new file mode 100644
index 00000000000..e5987dc9559
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/capitalization.py
@@ -0,0 +1,101 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Capitalization(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    smallCamel = StrSchema
+    CapitalCamel = StrSchema
+    small_Snake = StrSchema
+    Capital_Snake = StrSchema
+    SCA_ETH_Flow_Points = StrSchema
+    ATT_NAME = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        smallCamel: typing.Union[smallCamel, Unset] = unset,
+        CapitalCamel: typing.Union[CapitalCamel, Unset] = unset,
+        small_Snake: typing.Union[small_Snake, Unset] = unset,
+        Capital_Snake: typing.Union[Capital_Snake, Unset] = unset,
+        SCA_ETH_Flow_Points: typing.Union[SCA_ETH_Flow_Points, Unset] = unset,
+        ATT_NAME: typing.Union[ATT_NAME, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Capitalization':
+        return super().__new__(
+            cls,
+            *args,
+            smallCamel=smallCamel,
+            CapitalCamel=CapitalCamel,
+            small_Snake=small_Snake,
+            Capital_Snake=Capital_Snake,
+            SCA_ETH_Flow_Points=SCA_ETH_Flow_Points,
+            ATT_NAME=ATT_NAME,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/cat.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/cat.py
new file mode 100644
index 00000000000..e0f0b0f2053
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/cat.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Cat(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                Animal,
+                CatAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Cat':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.animal import Animal
+from petstore_api.model.cat_all_of import CatAllOf
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/cat_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/cat_all_of.py
new file mode 100644
index 00000000000..82c20ec0769
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/cat_all_of.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class CatAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    declawed = BoolSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        declawed: typing.Union[declawed, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'CatAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            declawed=declawed,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/category.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/category.py
new file mode 100644
index 00000000000..9f92d2b3a38
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/category.py
@@ -0,0 +1,92 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Category(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'name',
+    ))
+    id = Int64Schema
+    name = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        name: name,
+        id: typing.Union[id, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Category':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            id=id,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/child_cat.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/child_cat.py
new file mode 100644
index 00000000000..114bd2832d2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/child_cat.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ChildCat(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                ParentPet,
+                ChildCatAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ChildCat':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.child_cat_all_of import ChildCatAllOf
+from petstore_api.model.parent_pet import ParentPet
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/child_cat_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/child_cat_all_of.py
new file mode 100644
index 00000000000..791f3793cb5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/child_cat_all_of.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ChildCatAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    name = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        name: typing.Union[name, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ChildCatAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/class_model.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/class_model.py
new file mode 100644
index 00000000000..37c5b23285b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/class_model.py
@@ -0,0 +1,87 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ClassModel(
+    AnyTypeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Model for testing model with "_class" property
+    """
+    _class = StrSchema
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _class: typing.Union[_class, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ClassModel':
+        return super().__new__(
+            cls,
+            *args,
+            _class=_class,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/client.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/client.py
new file mode 100644
index 00000000000..bc4ff7ffab3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/client.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Client(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    client = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        client: typing.Union[client, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Client':
+        return super().__new__(
+            cls,
+            *args,
+            client=client,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/complex_quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/complex_quadrilateral.py
new file mode 100644
index 00000000000..422ae90d3b8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/complex_quadrilateral.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComplexQuadrilateral(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                QuadrilateralInterface,
+                ComplexQuadrilateralAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ComplexQuadrilateral':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.complex_quadrilateral_all_of import ComplexQuadrilateralAllOf
+from petstore_api.model.quadrilateral_interface import QuadrilateralInterface
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/complex_quadrilateral_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/complex_quadrilateral_all_of.py
new file mode 100644
index 00000000000..d24b43d5ed6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/complex_quadrilateral_all_of.py
@@ -0,0 +1,100 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComplexQuadrilateralAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class quadrilateralType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "ComplexQuadrilateral": "COMPLEXQUADRILATERAL",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def COMPLEXQUADRILATERAL(cls):
+            return cls._enum_by_value["ComplexQuadrilateral"]("ComplexQuadrilateral")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        quadrilateralType: typing.Union[quadrilateralType, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ComplexQuadrilateralAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            quadrilateralType=quadrilateralType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_any_of_different_types_no_validations.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_any_of_different_types_no_validations.py
new file mode 100644
index 00000000000..97f75c86dda
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_any_of_different_types_no_validations.py
@@ -0,0 +1,138 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedAnyOfDifferentTypesNoValidations(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        anyOf_0 = DictSchema
+        anyOf_1 = DateSchema
+        anyOf_2 = DateTimeSchema
+        anyOf_3 = BinarySchema
+        anyOf_4 = StrSchema
+        anyOf_5 = StrSchema
+        anyOf_6 = DictSchema
+        anyOf_7 = BoolSchema
+        anyOf_8 = NoneSchema
+        
+        
+        class anyOf_9(
+            ListSchema
+        ):
+            _items = AnyTypeSchema
+        anyOf_10 = NumberSchema
+        anyOf_11 = Float32Schema
+        anyOf_12 = Float64Schema
+        anyOf_13 = IntSchema
+        anyOf_14 = Int32Schema
+        anyOf_15 = Int64Schema
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+                anyOf_0,
+                anyOf_1,
+                anyOf_2,
+                anyOf_3,
+                anyOf_4,
+                anyOf_5,
+                anyOf_6,
+                anyOf_7,
+                anyOf_8,
+                anyOf_9,
+                anyOf_10,
+                anyOf_11,
+                anyOf_12,
+                anyOf_13,
+                anyOf_14,
+                anyOf_15,
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ComposedAnyOfDifferentTypesNoValidations':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_array.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_array.py
new file mode 100644
index 00000000000..8b20d7f0941
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_array.py
@@ -0,0 +1,70 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedArray(
+    ListSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _items = AnyTypeSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_bool.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_bool.py
new file mode 100644
index 00000000000..5aa09239e14
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_bool.py
@@ -0,0 +1,102 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedBool(
+    ComposedBase,
+    BoolSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        allOf_0 = AnyTypeSchema
+        return {
+            'allOf': [
+                allOf_0,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[bool, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'ComposedBool':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_none.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_none.py
new file mode 100644
index 00000000000..534e1ce01ca
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_none.py
@@ -0,0 +1,102 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedNone(
+    ComposedBase,
+    NoneSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        allOf_0 = AnyTypeSchema
+        return {
+            'allOf': [
+                allOf_0,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[None, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'ComposedNone':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_number.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_number.py
new file mode 100644
index 00000000000..c4e879ae995
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_number.py
@@ -0,0 +1,102 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedNumber(
+    ComposedBase,
+    NumberSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        allOf_0 = AnyTypeSchema
+        return {
+            'allOf': [
+                allOf_0,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[float, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'ComposedNumber':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_object.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_object.py
new file mode 100644
index 00000000000..f7ba1546f97
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_object.py
@@ -0,0 +1,104 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedObject(
+    ComposedBase,
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        allOf_0 = AnyTypeSchema
+        return {
+            'allOf': [
+                allOf_0,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ComposedObject':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_one_of_different_types.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_one_of_different_types.py
new file mode 100644
index 00000000000..0adf69e676e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_one_of_different_types.py
@@ -0,0 +1,159 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedOneOfDifferentTypes(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    this is a model that allows payloads of type object or number
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        oneOf_2 = NoneSchema
+        oneOf_3 = DateSchema
+        
+        
+        class oneOf_4(
+            _SchemaValidator(
+                max_properties=4,
+                min_properties=4,
+            ),
+            DictSchema
+        ):
+        
+        
+            def __new__(
+                cls,
+                *args: typing.Union[dict, frozendict, ],
+                _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+                **kwargs: typing.Type[Schema],
+            ) -> 'oneOf_4':
+                return super().__new__(
+                    cls,
+                    *args,
+                    _instantiation_metadata=_instantiation_metadata,
+                    **kwargs,
+                )
+        
+        
+        class oneOf_5(
+            _SchemaValidator(
+                max_items=4,
+                min_items=4,
+            ),
+            ListSchema
+        ):
+            _items = AnyTypeSchema
+        
+        
+        class oneOf_6(
+            _SchemaValidator(
+                regex=[{
+                    'pattern': r'^2020.*',  # noqa: E501
+                }],
+            ),
+            DateTimeSchema
+        ):
+            pass
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                NumberWithValidations,
+                Animal,
+                oneOf_2,
+                oneOf_3,
+                oneOf_4,
+                oneOf_5,
+                oneOf_6,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ComposedOneOfDifferentTypes':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.animal import Animal
+from petstore_api.model.number_with_validations import NumberWithValidations
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_string.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_string.py
new file mode 100644
index 00000000000..6efeb9a7872
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/composed_string.py
@@ -0,0 +1,102 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ComposedString(
+    ComposedBase,
+    StrSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        allOf_0 = AnyTypeSchema
+        return {
+            'allOf': [
+                allOf_0,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[str, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'ComposedString':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/currency.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/currency.py
new file mode 100644
index 00000000000..1fd715f3f14
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/currency.py
@@ -0,0 +1,85 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Currency(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            "eur": "EUR",
+            "usd": "USD",
+        }
+    ),
+    StrSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def EUR(cls):
+        return cls._enum_by_value["eur"]("eur")
+    
+    @classmethod
+    @property
+    def USD(cls):
+        return cls._enum_by_value["usd"]("usd")
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/danish_pig.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/danish_pig.py
new file mode 100644
index 00000000000..af29f5c9e7a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/danish_pig.py
@@ -0,0 +1,103 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class DanishPig(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'className',
+    ))
+    
+    
+    class className(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "DanishPig": "DANISHPIG",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def DANISHPIG(cls):
+            return cls._enum_by_value["DanishPig"]("DanishPig")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        className: className,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'DanishPig':
+        return super().__new__(
+            cls,
+            *args,
+            className=className,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_time_test.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_time_test.py
new file mode 100644
index 00000000000..8b05311d14d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_time_test.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+DateTimeTest = DateTimeSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_time_with_validations.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_time_with_validations.py
new file mode 100644
index 00000000000..c4365f56e89
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_time_with_validations.py
@@ -0,0 +1,75 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class DateTimeWithValidations(
+    _SchemaValidator(
+        regex=[{
+            'pattern': r'^2020.*',  # noqa: E501
+        }],
+    ),
+    DateTimeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_with_validations.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_with_validations.py
new file mode 100644
index 00000000000..364759f48e2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/date_with_validations.py
@@ -0,0 +1,75 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class DateWithValidations(
+    _SchemaValidator(
+        regex=[{
+            'pattern': r'^2020.*',  # noqa: E501
+        }],
+    ),
+    DateSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/decimal_payload.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/decimal_payload.py
new file mode 100644
index 00000000000..99f1f2e4735
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/decimal_payload.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+DecimalPayload = DecimalSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/dog.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/dog.py
new file mode 100644
index 00000000000..de0f9c174f3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/dog.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Dog(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                Animal,
+                DogAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Dog':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.animal import Animal
+from petstore_api.model.dog_all_of import DogAllOf
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/dog_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/dog_all_of.py
new file mode 100644
index 00000000000..b527aedf20b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/dog_all_of.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class DogAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    breed = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        breed: typing.Union[breed, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'DogAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            breed=breed,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/drawing.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/drawing.py
new file mode 100644
index 00000000000..d61f6b07be1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/drawing.py
@@ -0,0 +1,126 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Drawing(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def mainShape(cls) -> typing.Type['Shape']:
+        return Shape
+
+    @classmethod
+    @property
+    def shapeOrNull(cls) -> typing.Type['ShapeOrNull']:
+        return ShapeOrNull
+
+    @classmethod
+    @property
+    def nullableShape(cls) -> typing.Type['NullableShape']:
+        return NullableShape
+    
+    
+    class shapes(
+        ListSchema
+    ):
+    
+        @classmethod
+        @property
+        def _items(cls) -> typing.Type['Shape']:
+            return Shape
+
+    @classmethod
+    @property
+    def _additional_properties(cls) -> typing.Type['Fruit']:
+        return Fruit
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        mainShape: typing.Union['Shape', Unset] = unset,
+        shapeOrNull: typing.Union['ShapeOrNull', Unset] = unset,
+        nullableShape: typing.Union['NullableShape', Unset] = unset,
+        shapes: typing.Union[shapes, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Drawing':
+        return super().__new__(
+            cls,
+            *args,
+            mainShape=mainShape,
+            shapeOrNull=shapeOrNull,
+            nullableShape=nullableShape,
+            shapes=shapes,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.fruit import Fruit
+from petstore_api.model.nullable_shape import NullableShape
+from petstore_api.model.shape import Shape
+from petstore_api.model.shape_or_null import ShapeOrNull
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_arrays.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_arrays.py
new file mode 100644
index 00000000000..a3fb56284bd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_arrays.py
@@ -0,0 +1,134 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class EnumArrays(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class just_symbol(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                ">=": "GREATER_THAN_EQUALS",
+                "$": "DOLLAR",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def GREATER_THAN_EQUALS(cls):
+            return cls._enum_by_value[">="](">=")
+        
+        @classmethod
+        @property
+        def DOLLAR(cls):
+            return cls._enum_by_value["$"]("$")
+    
+    
+    class array_enum(
+        ListSchema
+    ):
+        
+        
+        class _items(
+            _SchemaEnumMaker(
+                enum_value_to_name={
+                    "fish": "FISH",
+                    "crab": "CRAB",
+                }
+            ),
+            StrSchema
+        ):
+            
+            @classmethod
+            @property
+            def FISH(cls):
+                return cls._enum_by_value["fish"]("fish")
+            
+            @classmethod
+            @property
+            def CRAB(cls):
+                return cls._enum_by_value["crab"]("crab")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        just_symbol: typing.Union[just_symbol, Unset] = unset,
+        array_enum: typing.Union[array_enum, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'EnumArrays':
+        return super().__new__(
+            cls,
+            *args,
+            just_symbol=just_symbol,
+            array_enum=array_enum,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_class.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_class.py
new file mode 100644
index 00000000000..45a9a512fc0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_class.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class EnumClass(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            "_abc": "_ABC",
+            "-efg": "EFG",
+            "(xyz)": "XYZ",
+        }
+    ),
+    StrSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def _ABC(cls):
+        return cls._enum_by_value["_abc"]("_abc")
+    
+    @classmethod
+    @property
+    def EFG(cls):
+        return cls._enum_by_value["-efg"]("-efg")
+    
+    @classmethod
+    @property
+    def XYZ(cls):
+        return cls._enum_by_value["(xyz)"]("(xyz)")
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_test.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_test.py
new file mode 100644
index 00000000000..7204328fc89
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/enum_test.py
@@ -0,0 +1,231 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class EnumTest(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'enum_string_required',
+    ))
+    
+    
+    class enum_string(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "UPPER": "UPPER",
+                "lower": "LOWER",
+                "": "EMPTY",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def UPPER(cls):
+            return cls._enum_by_value["UPPER"]("UPPER")
+        
+        @classmethod
+        @property
+        def LOWER(cls):
+            return cls._enum_by_value["lower"]("lower")
+        
+        @classmethod
+        @property
+        def EMPTY(cls):
+            return cls._enum_by_value[""]("")
+    
+    
+    class enum_string_required(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "UPPER": "UPPER",
+                "lower": "LOWER",
+                "": "EMPTY",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def UPPER(cls):
+            return cls._enum_by_value["UPPER"]("UPPER")
+        
+        @classmethod
+        @property
+        def LOWER(cls):
+            return cls._enum_by_value["lower"]("lower")
+        
+        @classmethod
+        @property
+        def EMPTY(cls):
+            return cls._enum_by_value[""]("")
+    
+    
+    class enum_integer(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                1: "POSITIVE_1",
+                -1: "NEGATIVE_1",
+            }
+        ),
+        Int32Schema
+    ):
+        
+        @classmethod
+        @property
+        def POSITIVE_1(cls):
+            return cls._enum_by_value[1](1)
+        
+        @classmethod
+        @property
+        def NEGATIVE_1(cls):
+            return cls._enum_by_value[-1](-1)
+    
+    
+    class enum_number(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                1.1: "POSITIVE_1_PT_1",
+                -1.2: "NEGATIVE_1_PT_2",
+            }
+        ),
+        Float64Schema
+    ):
+        
+        @classmethod
+        @property
+        def POSITIVE_1_PT_1(cls):
+            return cls._enum_by_value[1.1](1.1)
+        
+        @classmethod
+        @property
+        def NEGATIVE_1_PT_2(cls):
+            return cls._enum_by_value[-1.2](-1.2)
+
+    @classmethod
+    @property
+    def stringEnum(cls) -> typing.Type['StringEnum']:
+        return StringEnum
+
+    @classmethod
+    @property
+    def IntegerEnum(cls) -> typing.Type['IntegerEnum']:
+        return IntegerEnum
+
+    @classmethod
+    @property
+    def StringEnumWithDefaultValue(cls) -> typing.Type['StringEnumWithDefaultValue']:
+        return StringEnumWithDefaultValue
+
+    @classmethod
+    @property
+    def IntegerEnumWithDefaultValue(cls) -> typing.Type['IntegerEnumWithDefaultValue']:
+        return IntegerEnumWithDefaultValue
+
+    @classmethod
+    @property
+    def IntegerEnumOneValue(cls) -> typing.Type['IntegerEnumOneValue']:
+        return IntegerEnumOneValue
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        enum_string_required: enum_string_required,
+        enum_string: typing.Union[enum_string, Unset] = unset,
+        enum_integer: typing.Union[enum_integer, Unset] = unset,
+        enum_number: typing.Union[enum_number, Unset] = unset,
+        stringEnum: typing.Union['StringEnum', Unset] = unset,
+        IntegerEnum: typing.Union['IntegerEnum', Unset] = unset,
+        StringEnumWithDefaultValue: typing.Union['StringEnumWithDefaultValue', Unset] = unset,
+        IntegerEnumWithDefaultValue: typing.Union['IntegerEnumWithDefaultValue', Unset] = unset,
+        IntegerEnumOneValue: typing.Union['IntegerEnumOneValue', Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'EnumTest':
+        return super().__new__(
+            cls,
+            *args,
+            enum_string_required=enum_string_required,
+            enum_string=enum_string,
+            enum_integer=enum_integer,
+            enum_number=enum_number,
+            stringEnum=stringEnum,
+            IntegerEnum=IntegerEnum,
+            StringEnumWithDefaultValue=StringEnumWithDefaultValue,
+            IntegerEnumWithDefaultValue=IntegerEnumWithDefaultValue,
+            IntegerEnumOneValue=IntegerEnumOneValue,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.integer_enum import IntegerEnum
+from petstore_api.model.integer_enum_one_value import IntegerEnumOneValue
+from petstore_api.model.integer_enum_with_default_value import IntegerEnumWithDefaultValue
+from petstore_api.model.string_enum import StringEnum
+from petstore_api.model.string_enum_with_default_value import StringEnumWithDefaultValue
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/equilateral_triangle.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/equilateral_triangle.py
new file mode 100644
index 00000000000..9c433255529
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/equilateral_triangle.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class EquilateralTriangle(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                TriangleInterface,
+                EquilateralTriangleAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'EquilateralTriangle':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.equilateral_triangle_all_of import EquilateralTriangleAllOf
+from petstore_api.model.triangle_interface import TriangleInterface
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/equilateral_triangle_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/equilateral_triangle_all_of.py
new file mode 100644
index 00000000000..1e23482bd9c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/equilateral_triangle_all_of.py
@@ -0,0 +1,100 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class EquilateralTriangleAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class triangleType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "EquilateralTriangle": "EQUILATERALTRIANGLE",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def EQUILATERALTRIANGLE(cls):
+            return cls._enum_by_value["EquilateralTriangle"]("EquilateralTriangle")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        triangleType: typing.Union[triangleType, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'EquilateralTriangleAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            triangleType=triangleType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/file.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/file.py
new file mode 100644
index 00000000000..3bb58da7067
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/file.py
@@ -0,0 +1,88 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class File(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Must be named `File` for test.
+    """
+    sourceURI = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        sourceURI: typing.Union[sourceURI, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'File':
+        return super().__new__(
+            cls,
+            *args,
+            sourceURI=sourceURI,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/file_schema_test_class.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/file_schema_test_class.py
new file mode 100644
index 00000000000..f55669e6993
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/file_schema_test_class.py
@@ -0,0 +1,104 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class FileSchemaTestClass(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def file(cls) -> typing.Type['File']:
+        return File
+    
+    
+    class files(
+        ListSchema
+    ):
+    
+        @classmethod
+        @property
+        def _items(cls) -> typing.Type['File']:
+            return File
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        file: typing.Union['File', Unset] = unset,
+        files: typing.Union[files, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'FileSchemaTestClass':
+        return super().__new__(
+            cls,
+            *args,
+            file=file,
+            files=files,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.file import File
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/foo.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/foo.py
new file mode 100644
index 00000000000..47357f61588
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/foo.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Foo(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    bar = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        bar: typing.Union[bar, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Foo':
+        return super().__new__(
+            cls,
+            *args,
+            bar=bar,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/format_test.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/format_test.py
new file mode 100644
index 00000000000..4560f080ddd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/format_test.py
@@ -0,0 +1,252 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class FormatTest(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'number',
+        'byte',
+        'date',
+        'password',
+    ))
+    
+    
+    class integer(
+        _SchemaValidator(
+            inclusive_maximum=100,
+            inclusive_minimum=10,
+            multiple_of=[2],
+        ),
+        IntSchema
+    ):
+        pass
+    int32 = Int32Schema
+    
+    
+    class int32withValidations(
+        _SchemaValidator(
+            inclusive_maximum=200,
+            inclusive_minimum=20,
+        ),
+        Int32Schema
+    ):
+        pass
+    int64 = Int64Schema
+    
+    
+    class number(
+        _SchemaValidator(
+            inclusive_maximum=543.2,
+            inclusive_minimum=32.1,
+            multiple_of=[32.5],
+        ),
+        NumberSchema
+    ):
+        pass
+    
+    
+    class _float(
+        _SchemaValidator(
+            inclusive_maximum=987.6,
+            inclusive_minimum=54.3,
+        ),
+        Float32Schema
+    ):
+        pass
+    locals()['float'] = _float
+    del locals()['_float']
+    float32 = Float32Schema
+    
+    
+    class double(
+        _SchemaValidator(
+            inclusive_maximum=123.4,
+            inclusive_minimum=67.8,
+        ),
+        Float64Schema
+    ):
+        pass
+    float64 = Float64Schema
+    
+    
+    class arrayWithUniqueItems(
+        _SchemaValidator(
+            unique_items=True,
+        ),
+        ListSchema
+    ):
+        _items = NumberSchema
+    
+    
+    class string(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'[a-z]',  # noqa: E501
+                'flags': (
+                    re.IGNORECASE
+                )
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+    byte = StrSchema
+    binary = BinarySchema
+    date = DateSchema
+    dateTime = DateTimeSchema
+    uuid = StrSchema
+    uuidNoExample = StrSchema
+    
+    
+    class password(
+        _SchemaValidator(
+            max_length=64,
+            min_length=10,
+        ),
+        StrSchema
+    ):
+        pass
+    
+    
+    class pattern_with_digits(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'^\d{10}$',  # noqa: E501
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+    
+    
+    class pattern_with_digits_and_delimiter(
+        _SchemaValidator(
+            regex=[{
+                'pattern': r'^image_\d{1,3}$',  # noqa: E501
+                'flags': (
+                    re.IGNORECASE
+                )
+            }],
+        ),
+        StrSchema
+    ):
+        pass
+    noneProp = NoneSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        number: number,
+        byte: byte,
+        date: date,
+        password: password,
+        integer: typing.Union[integer, Unset] = unset,
+        int32: typing.Union[int32, Unset] = unset,
+        int32withValidations: typing.Union[int32withValidations, Unset] = unset,
+        int64: typing.Union[int64, Unset] = unset,
+        float32: typing.Union[float32, Unset] = unset,
+        double: typing.Union[double, Unset] = unset,
+        float64: typing.Union[float64, Unset] = unset,
+        arrayWithUniqueItems: typing.Union[arrayWithUniqueItems, Unset] = unset,
+        string: typing.Union[string, Unset] = unset,
+        binary: typing.Union[binary, Unset] = unset,
+        dateTime: typing.Union[dateTime, Unset] = unset,
+        uuid: typing.Union[uuid, Unset] = unset,
+        uuidNoExample: typing.Union[uuidNoExample, Unset] = unset,
+        pattern_with_digits: typing.Union[pattern_with_digits, Unset] = unset,
+        pattern_with_digits_and_delimiter: typing.Union[pattern_with_digits_and_delimiter, Unset] = unset,
+        noneProp: typing.Union[noneProp, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'FormatTest':
+        return super().__new__(
+            cls,
+            *args,
+            number=number,
+            byte=byte,
+            date=date,
+            password=password,
+            integer=integer,
+            int32=int32,
+            int32withValidations=int32withValidations,
+            int64=int64,
+            float32=float32,
+            double=double,
+            float64=float64,
+            arrayWithUniqueItems=arrayWithUniqueItems,
+            string=string,
+            binary=binary,
+            dateTime=dateTime,
+            uuid=uuid,
+            uuidNoExample=uuidNoExample,
+            pattern_with_digits=pattern_with_digits,
+            pattern_with_digits_and_delimiter=pattern_with_digits_and_delimiter,
+            noneProp=noneProp,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/fruit.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/fruit.py
new file mode 100644
index 00000000000..3fba42202fe
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/fruit.py
@@ -0,0 +1,109 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Fruit(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    color = StrSchema
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                Apple,
+                Banana,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        color: typing.Union[color, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Fruit':
+        return super().__new__(
+            cls,
+            *args,
+            color=color,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.apple import Apple
+from petstore_api.model.banana import Banana
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/fruit_req.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/fruit_req.py
new file mode 100644
index 00000000000..74414d77add
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/fruit_req.py
@@ -0,0 +1,108 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class FruitReq(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        oneOf_0 = NoneSchema
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                oneOf_0,
+                AppleReq,
+                BananaReq,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'FruitReq':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.apple_req import AppleReq
+from petstore_api.model.banana_req import BananaReq
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/gm_fruit.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/gm_fruit.py
new file mode 100644
index 00000000000..59d81989169
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/gm_fruit.py
@@ -0,0 +1,109 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class GmFruit(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    color = StrSchema
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+                Apple,
+                Banana,
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        color: typing.Union[color, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'GmFruit':
+        return super().__new__(
+            cls,
+            *args,
+            color=color,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.apple import Apple
+from petstore_api.model.banana import Banana
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/grandparent_animal.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/grandparent_animal.py
new file mode 100644
index 00000000000..47e282a63e8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/grandparent_animal.py
@@ -0,0 +1,102 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class GrandparentAnimal(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'pet_type',
+    ))
+    pet_type = StrSchema
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'pet_type': {
+                'ChildCat': ChildCat,
+                'ParentPet': ParentPet,
+            }
+        }
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        pet_type: pet_type,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'GrandparentAnimal':
+        return super().__new__(
+            cls,
+            *args,
+            pet_type=pet_type,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.child_cat import ChildCat
+from petstore_api.model.parent_pet import ParentPet
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/has_only_read_only.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/has_only_read_only.py
new file mode 100644
index 00000000000..a0a1f019d81
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/has_only_read_only.py
@@ -0,0 +1,89 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class HasOnlyReadOnly(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    bar = StrSchema
+    foo = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        bar: typing.Union[bar, Unset] = unset,
+        foo: typing.Union[foo, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'HasOnlyReadOnly':
+        return super().__new__(
+            cls,
+            *args,
+            bar=bar,
+            foo=foo,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/health_check_result.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/health_check_result.py
new file mode 100644
index 00000000000..3ea543b0004
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/health_check_result.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class HealthCheckResult(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.
+    """
+    
+    
+    class NullableMessage(
+        _SchemaTypeChecker(typing.Union[none_type, str, ]),
+        StrBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[str, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'NullableMessage':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        NullableMessage: typing.Union[NullableMessage, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'HealthCheckResult':
+        return super().__new__(
+            cls,
+            *args,
+            NullableMessage=NullableMessage,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/inline_response_default.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/inline_response_default.py
new file mode 100644
index 00000000000..146af3287ee
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/inline_response_default.py
@@ -0,0 +1,92 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class InlineResponseDefault(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def string(cls) -> typing.Type['Foo']:
+        return Foo
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        string: typing.Union['Foo', Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'InlineResponseDefault':
+        return super().__new__(
+            cls,
+            *args,
+            string=string,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.foo import Foo
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum.py
new file mode 100644
index 00000000000..6227389dfb1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IntegerEnum(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            0: "POSITIVE_0",
+            1: "POSITIVE_1",
+            2: "POSITIVE_2",
+        }
+    ),
+    IntSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def POSITIVE_0(cls):
+        return cls._enum_by_value[0](0)
+    
+    @classmethod
+    @property
+    def POSITIVE_1(cls):
+        return cls._enum_by_value[1](1)
+    
+    @classmethod
+    @property
+    def POSITIVE_2(cls):
+        return cls._enum_by_value[2](2)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_big.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_big.py
new file mode 100644
index 00000000000..d9132eb2997
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_big.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IntegerEnumBig(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            10: "POSITIVE_10",
+            11: "POSITIVE_11",
+            12: "POSITIVE_12",
+        }
+    ),
+    IntSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def POSITIVE_10(cls):
+        return cls._enum_by_value[10](10)
+    
+    @classmethod
+    @property
+    def POSITIVE_11(cls):
+        return cls._enum_by_value[11](11)
+    
+    @classmethod
+    @property
+    def POSITIVE_12(cls):
+        return cls._enum_by_value[12](12)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_one_value.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_one_value.py
new file mode 100644
index 00000000000..bf6c9452502
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_one_value.py
@@ -0,0 +1,79 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IntegerEnumOneValue(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            0: "POSITIVE_0",
+        }
+    ),
+    IntSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def POSITIVE_0(cls):
+        return cls._enum_by_value[0](0)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_with_default_value.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_with_default_value.py
new file mode 100644
index 00000000000..48870526b65
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_enum_with_default_value.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IntegerEnumWithDefaultValue(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            0: "POSITIVE_0",
+            1: "POSITIVE_1",
+            2: "POSITIVE_2",
+        }
+    ),
+    IntSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def POSITIVE_0(cls):
+        return cls._enum_by_value[0](0)
+    
+    @classmethod
+    @property
+    def POSITIVE_1(cls):
+        return cls._enum_by_value[1](1)
+    
+    @classmethod
+    @property
+    def POSITIVE_2(cls):
+        return cls._enum_by_value[2](2)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_max10.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_max10.py
new file mode 100644
index 00000000000..087d6c07427
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_max10.py
@@ -0,0 +1,73 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IntegerMax10(
+    _SchemaValidator(
+        inclusive_maximum=10,
+    ),
+    Int64Schema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_min15.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_min15.py
new file mode 100644
index 00000000000..ef06e4d9e73
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/integer_min15.py
@@ -0,0 +1,73 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IntegerMin15(
+    _SchemaValidator(
+        inclusive_minimum=15,
+    ),
+    Int64Schema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/isosceles_triangle.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/isosceles_triangle.py
new file mode 100644
index 00000000000..fa8036ac0c7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/isosceles_triangle.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IsoscelesTriangle(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                TriangleInterface,
+                IsoscelesTriangleAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'IsoscelesTriangle':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.isosceles_triangle_all_of import IsoscelesTriangleAllOf
+from petstore_api.model.triangle_interface import TriangleInterface
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/isosceles_triangle_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/isosceles_triangle_all_of.py
new file mode 100644
index 00000000000..98351c3eb9d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/isosceles_triangle_all_of.py
@@ -0,0 +1,100 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class IsoscelesTriangleAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class triangleType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "IsoscelesTriangle": "ISOSCELESTRIANGLE",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def ISOSCELESTRIANGLE(cls):
+            return cls._enum_by_value["IsoscelesTriangle"]("IsoscelesTriangle")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        triangleType: typing.Union[triangleType, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'IsoscelesTriangleAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            triangleType=triangleType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/mammal.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/mammal.py
new file mode 100644
index 00000000000..c46a3dde4ad
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/mammal.py
@@ -0,0 +1,119 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Mammal(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'className': {
+                'Pig': Pig,
+                'whale': Whale,
+                'zebra': Zebra,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                Whale,
+                Zebra,
+                Pig,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Mammal':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.pig import Pig
+from petstore_api.model.whale import Whale
+from petstore_api.model.zebra import Zebra
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/map_test.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/map_test.py
new file mode 100644
index 00000000000..c8e7a591f8c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/map_test.py
@@ -0,0 +1,197 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class MapTest(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class map_map_of_string(
+        DictSchema
+    ):
+        
+        
+        class _additional_properties(
+            DictSchema
+        ):
+            _additional_properties = StrSchema
+        
+        
+            def __new__(
+                cls,
+                *args: typing.Union[dict, frozendict, ],
+                _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+                **kwargs: typing.Type[Schema],
+            ) -> '_additional_properties':
+                return super().__new__(
+                    cls,
+                    *args,
+                    _instantiation_metadata=_instantiation_metadata,
+                    **kwargs,
+                )
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'map_map_of_string':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    
+    
+    class map_of_enum_string(
+        DictSchema
+    ):
+        
+        
+        class _additional_properties(
+            _SchemaEnumMaker(
+                enum_value_to_name={
+                    "UPPER": "UPPER",
+                    "lower": "LOWER",
+                }
+            ),
+            StrSchema
+        ):
+            
+            @classmethod
+            @property
+            def UPPER(cls):
+                return cls._enum_by_value["UPPER"]("UPPER")
+            
+            @classmethod
+            @property
+            def LOWER(cls):
+                return cls._enum_by_value["lower"]("lower")
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'map_of_enum_string':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    
+    
+    class direct_map(
+        DictSchema
+    ):
+        _additional_properties = BoolSchema
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'direct_map':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+
+    @classmethod
+    @property
+    def indirect_map(cls) -> typing.Type['StringBooleanMap']:
+        return StringBooleanMap
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        map_map_of_string: typing.Union[map_map_of_string, Unset] = unset,
+        map_of_enum_string: typing.Union[map_of_enum_string, Unset] = unset,
+        direct_map: typing.Union[direct_map, Unset] = unset,
+        indirect_map: typing.Union['StringBooleanMap', Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'MapTest':
+        return super().__new__(
+            cls,
+            *args,
+            map_map_of_string=map_map_of_string,
+            map_of_enum_string=map_of_enum_string,
+            direct_map=direct_map,
+            indirect_map=indirect_map,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.string_boolean_map import StringBooleanMap
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/mixed_properties_and_additional_properties_class.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/mixed_properties_and_additional_properties_class.py
new file mode 100644
index 00000000000..6f95ff0eaaf
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/mixed_properties_and_additional_properties_class.py
@@ -0,0 +1,117 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class MixedPropertiesAndAdditionalPropertiesClass(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    uuid = StrSchema
+    dateTime = DateTimeSchema
+    
+    
+    class map(
+        DictSchema
+    ):
+    
+        @classmethod
+        @property
+        def _additional_properties(cls) -> typing.Type['Animal']:
+            return Animal
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'map':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        uuid: typing.Union[uuid, Unset] = unset,
+        dateTime: typing.Union[dateTime, Unset] = unset,
+        map: typing.Union[map, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'MixedPropertiesAndAdditionalPropertiesClass':
+        return super().__new__(
+            cls,
+            *args,
+            uuid=uuid,
+            dateTime=dateTime,
+            map=map,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.animal import Animal
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/model200_response.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/model200_response.py
new file mode 100644
index 00000000000..cf5dd3ae557
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/model200_response.py
@@ -0,0 +1,90 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Model200Response(
+    AnyTypeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    model with an invalid class name for python, starts with a number
+    """
+    name = Int32Schema
+    _class = StrSchema
+    locals()['class'] = _class
+    del locals()['_class']
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        name: typing.Union[name, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Model200Response':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/model_return.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/model_return.py
new file mode 100644
index 00000000000..5a9f2f5bb08
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/model_return.py
@@ -0,0 +1,87 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ModelReturn(
+    AnyTypeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Model for testing reserved words
+    """
+    _return = Int32Schema
+    locals()['return'] = _return
+    del locals()['_return']
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ModelReturn':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/money.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/money.py
new file mode 100644
index 00000000000..603573e9f99
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/money.py
@@ -0,0 +1,99 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Money(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'amount',
+        'currency',
+    ))
+    amount = DecimalSchema
+
+    @classmethod
+    @property
+    def currency(cls) -> typing.Type['Currency']:
+        return Currency
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        amount: amount,
+        currency: currency,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Money':
+        return super().__new__(
+            cls,
+            *args,
+            amount=amount,
+            currency=currency,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.currency import Currency
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/name.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/name.py
new file mode 100644
index 00000000000..08f1eacf23b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/name.py
@@ -0,0 +1,96 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Name(
+    AnyTypeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Model for testing model name same as property name
+    """
+    _required_property_names = set((
+        'name',
+    ))
+    name = Int32Schema
+    snake_case = Int32Schema
+    _property = StrSchema
+    locals()['property'] = _property
+    del locals()['_property']
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        name: name,
+        snake_case: typing.Union[snake_case, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Name':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            snake_case=snake_case,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/no_additional_properties.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/no_additional_properties.py
new file mode 100644
index 00000000000..4e7724357e8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/no_additional_properties.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class NoAdditionalProperties(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'id',
+    ))
+    id = Int64Schema
+    petId = Int64Schema
+    _additional_properties = None
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        id: id,
+        petId: typing.Union[petId, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'NoAdditionalProperties':
+        return super().__new__(
+            cls,
+            *args,
+            id=id,
+            petId=petId,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_class.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_class.py
new file mode 100644
index 00000000000..d3a24743246
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_class.py
@@ -0,0 +1,410 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class NullableClass(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class integer_prop(
+        _SchemaTypeChecker(typing.Union[none_type, decimal.Decimal, ]),
+        IntBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[int, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'integer_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class number_prop(
+        _SchemaTypeChecker(typing.Union[none_type, decimal.Decimal, ]),
+        NumberBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[float, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'number_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class boolean_prop(
+        _SchemaTypeChecker(typing.Union[none_type, bool, ]),
+        BoolBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[bool, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'boolean_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class string_prop(
+        _SchemaTypeChecker(typing.Union[none_type, str, ]),
+        StrBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[str, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'string_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class date_prop(
+        _SchemaTypeChecker(typing.Union[none_type, str, ]),
+        DateBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'date_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class datetime_prop(
+        _SchemaTypeChecker(typing.Union[none_type, str, ]),
+        DateTimeBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'datetime_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class array_nullable_prop(
+        _SchemaTypeChecker(typing.Union[tuple, none_type, ]),
+        ListBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[list, tuple, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'array_nullable_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class array_and_items_nullable_prop(
+        _SchemaTypeChecker(typing.Union[tuple, none_type, ]),
+        ListBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[list, tuple, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        ) -> 'array_and_items_nullable_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+            )
+    
+    
+    class array_items_nullable(
+        ListSchema
+    ):
+        
+        
+        class _items(
+            _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+            DictBase,
+            NoneBase,
+            Schema
+        ):
+        
+            def __new__(
+                cls,
+                *args: typing.Union[dict, frozendict, None, ],
+                _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+                **kwargs: typing.Type[Schema],
+            ) -> '_items':
+                return super().__new__(
+                    cls,
+                    *args,
+                    _instantiation_metadata=_instantiation_metadata,
+                    **kwargs,
+                )
+    
+    
+    class object_nullable_prop(
+        _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+        DictBase,
+        NoneBase,
+        Schema
+    ):
+        _additional_properties = DictSchema
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'object_nullable_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    
+    
+    class object_and_items_nullable_prop(
+        _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+        DictBase,
+        NoneBase,
+        Schema
+    ):
+        
+        
+        class _additional_properties(
+            _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+            DictBase,
+            NoneBase,
+            Schema
+        ):
+        
+            def __new__(
+                cls,
+                *args: typing.Union[dict, frozendict, None, ],
+                _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+                **kwargs: typing.Type[Schema],
+            ) -> '_additional_properties':
+                return super().__new__(
+                    cls,
+                    *args,
+                    _instantiation_metadata=_instantiation_metadata,
+                    **kwargs,
+                )
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'object_and_items_nullable_prop':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    
+    
+    class object_items_nullable(
+        DictSchema
+    ):
+        
+        
+        class _additional_properties(
+            _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+            DictBase,
+            NoneBase,
+            Schema
+        ):
+        
+            def __new__(
+                cls,
+                *args: typing.Union[dict, frozendict, None, ],
+                _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+                **kwargs: typing.Type[Schema],
+            ) -> '_additional_properties':
+                return super().__new__(
+                    cls,
+                    *args,
+                    _instantiation_metadata=_instantiation_metadata,
+                    **kwargs,
+                )
+    
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'object_items_nullable':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    
+    
+    class _additional_properties(
+        _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+        DictBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> '_additional_properties':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        integer_prop: typing.Union[integer_prop, Unset] = unset,
+        number_prop: typing.Union[number_prop, Unset] = unset,
+        boolean_prop: typing.Union[boolean_prop, Unset] = unset,
+        string_prop: typing.Union[string_prop, Unset] = unset,
+        date_prop: typing.Union[date_prop, Unset] = unset,
+        datetime_prop: typing.Union[datetime_prop, Unset] = unset,
+        array_nullable_prop: typing.Union[array_nullable_prop, Unset] = unset,
+        array_and_items_nullable_prop: typing.Union[array_and_items_nullable_prop, Unset] = unset,
+        array_items_nullable: typing.Union[array_items_nullable, Unset] = unset,
+        object_nullable_prop: typing.Union[object_nullable_prop, Unset] = unset,
+        object_and_items_nullable_prop: typing.Union[object_and_items_nullable_prop, Unset] = unset,
+        object_items_nullable: typing.Union[object_items_nullable, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'NullableClass':
+        return super().__new__(
+            cls,
+            *args,
+            integer_prop=integer_prop,
+            number_prop=number_prop,
+            boolean_prop=boolean_prop,
+            string_prop=string_prop,
+            date_prop=date_prop,
+            datetime_prop=datetime_prop,
+            array_nullable_prop=array_nullable_prop,
+            array_and_items_nullable_prop=array_and_items_nullable_prop,
+            array_items_nullable=array_items_nullable,
+            object_nullable_prop=object_nullable_prop,
+            object_and_items_nullable_prop=object_and_items_nullable_prop,
+            object_items_nullable=object_items_nullable,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_shape.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_shape.py
new file mode 100644
index 00000000000..2a0c429f54e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_shape.py
@@ -0,0 +1,120 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class NullableShape(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    The value may be a shape or the 'null' value. The 'nullable' attribute was introduced in OAS schema >= 3.0 and has been deprecated in OAS schema >= 3.1. For a nullable composed schema to work, one of its chosen oneOf schemas must be type null
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'shapeType': {
+                'Quadrilateral': Quadrilateral,
+                'Triangle': Triangle,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        oneOf_2 = NoneSchema
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                Triangle,
+                Quadrilateral,
+                oneOf_2,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'NullableShape':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.quadrilateral import Quadrilateral
+from petstore_api.model.triangle import Triangle
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_string.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_string.py
new file mode 100644
index 00000000000..567a7fac160
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/nullable_string.py
@@ -0,0 +1,83 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class NullableString(
+    _SchemaTypeChecker(typing.Union[none_type, str, ]),
+    StrBase,
+    NoneBase,
+    Schema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    def __new__(
+        cls,
+        *args: typing.Union[str, None, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'NullableString':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number.py
new file mode 100644
index 00000000000..19c1626f487
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+Number = NumberSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number_only.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number_only.py
new file mode 100644
index 00000000000..52533d39e49
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number_only.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class NumberOnly(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    JustNumber = NumberSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        JustNumber: typing.Union[JustNumber, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'NumberOnly':
+        return super().__new__(
+            cls,
+            *args,
+            JustNumber=JustNumber,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number_with_validations.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number_with_validations.py
new file mode 100644
index 00000000000..c8108d4a107
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/number_with_validations.py
@@ -0,0 +1,74 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class NumberWithValidations(
+    _SchemaValidator(
+        inclusive_maximum=20,
+        inclusive_minimum=10,
+    ),
+    NumberSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_interface.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_interface.py
new file mode 100644
index 00000000000..af87968d14a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_interface.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+ObjectInterface = DictSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_model_with_ref_props.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_model_with_ref_props.py
new file mode 100644
index 00000000000..14aeee17ba6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_model_with_ref_props.py
@@ -0,0 +1,100 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ObjectModelWithRefProps(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    a model that includes properties which should stay primitive (String + Boolean) and one which is defined as a class, NumberWithValidations
+    """
+
+    @classmethod
+    @property
+    def myNumber(cls) -> typing.Type['NumberWithValidations']:
+        return NumberWithValidations
+    myString = StrSchema
+    myBoolean = BoolSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        myNumber: typing.Union['NumberWithValidations', Unset] = unset,
+        myString: typing.Union[myString, Unset] = unset,
+        myBoolean: typing.Union[myBoolean, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ObjectModelWithRefProps':
+        return super().__new__(
+            cls,
+            *args,
+            myNumber=myNumber,
+            myString=myString,
+            myBoolean=myBoolean,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.number_with_validations import NumberWithValidations
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_decimal_properties.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_decimal_properties.py
new file mode 100644
index 00000000000..074cc52aaa4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_decimal_properties.py
@@ -0,0 +1,98 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ObjectWithDecimalProperties(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    length = DecimalSchema
+    width = DecimalSchema
+
+    @classmethod
+    @property
+    def cost(cls) -> typing.Type['Money']:
+        return Money
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        length: typing.Union[length, Unset] = unset,
+        width: typing.Union[width, Unset] = unset,
+        cost: typing.Union['Money', Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ObjectWithDecimalProperties':
+        return super().__new__(
+            cls,
+            *args,
+            length=length,
+            width=width,
+            cost=cost,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.money import Money
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_difficultly_named_props.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_difficultly_named_props.py
new file mode 100644
index 00000000000..2429a2205a2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_difficultly_named_props.py
@@ -0,0 +1,97 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ObjectWithDifficultlyNamedProps(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    model with properties that have invalid names for python
+    """
+    _required_property_names = set((
+        '123-list',
+    ))
+    special_property_name = Int64Schema
+    locals()['$special[property.name]'] = special_property_name
+    del locals()['special_property_name']
+    _123_list = StrSchema
+    locals()['123-list'] = _123_list
+    del locals()['_123_list']
+    _123_number = IntSchema
+    locals()['123Number'] = _123_number
+    del locals()['_123_number']
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ObjectWithDifficultlyNamedProps':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_validations.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_validations.py
new file mode 100644
index 00000000000..b0b588d04a1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/object_with_validations.py
@@ -0,0 +1,86 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ObjectWithValidations(
+    _SchemaValidator(
+        min_properties=2,
+    ),
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ObjectWithValidations':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/order.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/order.py
new file mode 100644
index 00000000000..294687560d5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/order.py
@@ -0,0 +1,127 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Order(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    id = Int64Schema
+    petId = Int64Schema
+    quantity = Int32Schema
+    shipDate = DateTimeSchema
+    
+    
+    class status(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "placed": "PLACED",
+                "approved": "APPROVED",
+                "delivered": "DELIVERED",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def PLACED(cls):
+            return cls._enum_by_value["placed"]("placed")
+        
+        @classmethod
+        @property
+        def APPROVED(cls):
+            return cls._enum_by_value["approved"]("approved")
+        
+        @classmethod
+        @property
+        def DELIVERED(cls):
+            return cls._enum_by_value["delivered"]("delivered")
+    complete = BoolSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        id: typing.Union[id, Unset] = unset,
+        petId: typing.Union[petId, Unset] = unset,
+        quantity: typing.Union[quantity, Unset] = unset,
+        shipDate: typing.Union[shipDate, Unset] = unset,
+        status: typing.Union[status, Unset] = unset,
+        complete: typing.Union[complete, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Order':
+        return super().__new__(
+            cls,
+            *args,
+            id=id,
+            petId=petId,
+            quantity=quantity,
+            shipDate=shipDate,
+            status=status,
+            complete=complete,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/parent_pet.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/parent_pet.py
new file mode 100644
index 00000000000..2775c77d79c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/parent_pet.py
@@ -0,0 +1,115 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ParentPet(
+    ComposedBase,
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'pet_type': {
+                'ChildCat': ChildCat,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                GrandparentAnimal,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ParentPet':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.child_cat import ChildCat
+from petstore_api.model.grandparent_animal import GrandparentAnimal
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/pet.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/pet.py
new file mode 100644
index 00000000000..038a4c6f701
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/pet.py
@@ -0,0 +1,154 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Pet(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Pet object that needs to be added to the store
+    """
+    _required_property_names = set((
+        'name',
+        'photoUrls',
+    ))
+    id = Int64Schema
+
+    @classmethod
+    @property
+    def category(cls) -> typing.Type['Category']:
+        return Category
+    name = StrSchema
+    
+    
+    class photoUrls(
+        ListSchema
+    ):
+        _items = StrSchema
+    
+    
+    class tags(
+        ListSchema
+    ):
+    
+        @classmethod
+        @property
+        def _items(cls) -> typing.Type['Tag']:
+            return Tag
+    
+    
+    class status(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "available": "AVAILABLE",
+                "pending": "PENDING",
+                "sold": "SOLD",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def AVAILABLE(cls):
+            return cls._enum_by_value["available"]("available")
+        
+        @classmethod
+        @property
+        def PENDING(cls):
+            return cls._enum_by_value["pending"]("pending")
+        
+        @classmethod
+        @property
+        def SOLD(cls):
+            return cls._enum_by_value["sold"]("sold")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        name: name,
+        photoUrls: photoUrls,
+        id: typing.Union[id, Unset] = unset,
+        category: typing.Union['Category', Unset] = unset,
+        tags: typing.Union[tags, Unset] = unset,
+        status: typing.Union[status, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Pet':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            photoUrls=photoUrls,
+            id=id,
+            category=category,
+            tags=tags,
+            status=status,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.category import Category
+from petstore_api.model.tag import Tag
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/pig.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/pig.py
new file mode 100644
index 00000000000..438831aac74
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/pig.py
@@ -0,0 +1,116 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Pig(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'className': {
+                'BasquePig': BasquePig,
+                'DanishPig': DanishPig,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                BasquePig,
+                DanishPig,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Pig':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.basque_pig import BasquePig
+from petstore_api.model.danish_pig import DanishPig
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/player.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/player.py
new file mode 100644
index 00000000000..e85504879ae
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/player.py
@@ -0,0 +1,95 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Player(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    a model that includes a self reference this forces properties and additionalProperties to be lazy loaded in python models because the Player class has not fully loaded when defining properties
+    """
+    name = StrSchema
+
+    @classmethod
+    @property
+    def enemyPlayer(cls) -> typing.Type['Player']:
+        return Player
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        name: typing.Union[name, Unset] = unset,
+        enemyPlayer: typing.Union['Player', Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Player':
+        return super().__new__(
+            cls,
+            *args,
+            name=name,
+            enemyPlayer=enemyPlayer,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/quadrilateral.py
new file mode 100644
index 00000000000..7ce3ae227f9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/quadrilateral.py
@@ -0,0 +1,116 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Quadrilateral(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'quadrilateralType': {
+                'ComplexQuadrilateral': ComplexQuadrilateral,
+                'SimpleQuadrilateral': SimpleQuadrilateral,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                SimpleQuadrilateral,
+                ComplexQuadrilateral,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Quadrilateral':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.complex_quadrilateral import ComplexQuadrilateral
+from petstore_api.model.simple_quadrilateral import SimpleQuadrilateral
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/quadrilateral_interface.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/quadrilateral_interface.py
new file mode 100644
index 00000000000..ff7e85735b4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/quadrilateral_interface.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class QuadrilateralInterface(
+    AnyTypeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'shapeType',
+        'quadrilateralType',
+    ))
+    
+    
+    class shapeType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "Quadrilateral": "QUADRILATERAL",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def QUADRILATERAL(cls):
+            return cls._enum_by_value["Quadrilateral"]("Quadrilateral")
+    quadrilateralType = StrSchema
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        shapeType: shapeType,
+        quadrilateralType: quadrilateralType,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'QuadrilateralInterface':
+        return super().__new__(
+            cls,
+            *args,
+            shapeType=shapeType,
+            quadrilateralType=quadrilateralType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/read_only_first.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/read_only_first.py
new file mode 100644
index 00000000000..c3b568a7336
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/read_only_first.py
@@ -0,0 +1,89 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ReadOnlyFirst(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    bar = StrSchema
+    baz = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        bar: typing.Union[bar, Unset] = unset,
+        baz: typing.Union[baz, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ReadOnlyFirst':
+        return super().__new__(
+            cls,
+            *args,
+            bar=bar,
+            baz=baz,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/scalene_triangle.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/scalene_triangle.py
new file mode 100644
index 00000000000..721c27153e5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/scalene_triangle.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ScaleneTriangle(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                TriangleInterface,
+                ScaleneTriangleAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ScaleneTriangle':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.scalene_triangle_all_of import ScaleneTriangleAllOf
+from petstore_api.model.triangle_interface import TriangleInterface
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/scalene_triangle_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/scalene_triangle_all_of.py
new file mode 100644
index 00000000000..59552599264
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/scalene_triangle_all_of.py
@@ -0,0 +1,100 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ScaleneTriangleAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class triangleType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "ScaleneTriangle": "SCALENETRIANGLE",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def SCALENETRIANGLE(cls):
+            return cls._enum_by_value["ScaleneTriangle"]("ScaleneTriangle")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        triangleType: typing.Union[triangleType, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ScaleneTriangleAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            triangleType=triangleType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/shape.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/shape.py
new file mode 100644
index 00000000000..f61207d5b57
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/shape.py
@@ -0,0 +1,116 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Shape(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'shapeType': {
+                'Quadrilateral': Quadrilateral,
+                'Triangle': Triangle,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                Triangle,
+                Quadrilateral,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Shape':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.quadrilateral import Quadrilateral
+from petstore_api.model.triangle import Triangle
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/shape_or_null.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/shape_or_null.py
new file mode 100644
index 00000000000..f78ed803a59
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/shape_or_null.py
@@ -0,0 +1,120 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class ShapeOrNull(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    The value may be a shape or the 'null' value. This is introduced in OAS schema >= 3.1.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'shapeType': {
+                'Quadrilateral': Quadrilateral,
+                'Triangle': Triangle,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        oneOf_0 = NoneSchema
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                oneOf_0,
+                Triangle,
+                Quadrilateral,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'ShapeOrNull':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.quadrilateral import Quadrilateral
+from petstore_api.model.triangle import Triangle
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/simple_quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/simple_quadrilateral.py
new file mode 100644
index 00000000000..f6bf08a97e5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/simple_quadrilateral.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class SimpleQuadrilateral(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                QuadrilateralInterface,
+                SimpleQuadrilateralAllOf,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SimpleQuadrilateral':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.quadrilateral_interface import QuadrilateralInterface
+from petstore_api.model.simple_quadrilateral_all_of import SimpleQuadrilateralAllOf
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/simple_quadrilateral_all_of.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/simple_quadrilateral_all_of.py
new file mode 100644
index 00000000000..8e4bea9b30e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/simple_quadrilateral_all_of.py
@@ -0,0 +1,100 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class SimpleQuadrilateralAllOf(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    
+    class quadrilateralType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "SimpleQuadrilateral": "SIMPLEQUADRILATERAL",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def SIMPLEQUADRILATERAL(cls):
+            return cls._enum_by_value["SimpleQuadrilateral"]("SimpleQuadrilateral")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        quadrilateralType: typing.Union[quadrilateralType, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SimpleQuadrilateralAllOf':
+        return super().__new__(
+            cls,
+            *args,
+            quadrilateralType=quadrilateralType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/some_object.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/some_object.py
new file mode 100644
index 00000000000..3efa9b66074
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/some_object.py
@@ -0,0 +1,104 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class SomeObject(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+                ObjectInterface,
+            ],
+            'oneOf': [
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SomeObject':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.object_interface import ObjectInterface
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/special_model_name.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/special_model_name.py
new file mode 100644
index 00000000000..9a67034b34c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/special_model_name.py
@@ -0,0 +1,88 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class SpecialModelName(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    model with an invalid class name for python
+    """
+    a = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        a: typing.Union[a, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'SpecialModelName':
+        return super().__new__(
+            cls,
+            *args,
+            a=a,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string.py
new file mode 100644
index 00000000000..f2f4e22231e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string.py
@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+String = StrSchema
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_boolean_map.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_boolean_map.py
new file mode 100644
index 00000000000..a42d77f660d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_boolean_map.py
@@ -0,0 +1,84 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class StringBooleanMap(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _additional_properties = BoolSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'StringBooleanMap':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_enum.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_enum.py
new file mode 100644
index 00000000000..395d83d0f1e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_enum.py
@@ -0,0 +1,135 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class StringEnum(
+    _SchemaTypeChecker(typing.Union[none_type, str, ]),
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            None: "NONE",
+            "placed": "PLACED",
+            "approved": "APPROVED",
+            "delivered": "DELIVERED",
+            "single quoted": "SINGLE_QUOTED",
+            '''multiple
+lines''': "MULTIPLE_LINES",
+            '''double quote 
+ with newline''': "DOUBLE_QUOTE_WITH_NEWLINE",
+        }
+    ),
+    StrBase,
+    NoneBase,
+    Schema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def NONE(cls):
+        return cls._enum_by_value[None](None)
+    
+    @classmethod
+    @property
+    def PLACED(cls):
+        return cls._enum_by_value["placed"]("placed")
+    
+    @classmethod
+    @property
+    def APPROVED(cls):
+        return cls._enum_by_value["approved"]("approved")
+    
+    @classmethod
+    @property
+    def DELIVERED(cls):
+        return cls._enum_by_value["delivered"]("delivered")
+    
+    @classmethod
+    @property
+    def SINGLE_QUOTED(cls):
+        return cls._enum_by_value["single quoted"]("single quoted")
+    
+    @classmethod
+    @property
+    def MULTIPLE_LINES(cls):
+        return cls._enum_by_value['''multiple
+lines''']('''multiple
+lines''')
+    
+    @classmethod
+    @property
+    def DOUBLE_QUOTE_WITH_NEWLINE(cls):
+        return cls._enum_by_value['''double quote 
+ with newline''']('''double quote 
+ with newline''')
+
+    def __new__(
+        cls,
+        *args: typing.Union[str, None, ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+    ) -> 'StringEnum':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_enum_with_default_value.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_enum_with_default_value.py
new file mode 100644
index 00000000000..c51fbf77013
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_enum_with_default_value.py
@@ -0,0 +1,91 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class StringEnumWithDefaultValue(
+    _SchemaEnumMaker(
+        enum_value_to_name={
+            "placed": "PLACED",
+            "approved": "APPROVED",
+            "delivered": "DELIVERED",
+        }
+    ),
+    StrSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    
+    @classmethod
+    @property
+    def PLACED(cls):
+        return cls._enum_by_value["placed"]("placed")
+    
+    @classmethod
+    @property
+    def APPROVED(cls):
+        return cls._enum_by_value["approved"]("approved")
+    
+    @classmethod
+    @property
+    def DELIVERED(cls):
+        return cls._enum_by_value["delivered"]("delivered")
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_with_validation.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_with_validation.py
new file mode 100644
index 00000000000..9eae261142d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/string_with_validation.py
@@ -0,0 +1,73 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class StringWithValidation(
+    _SchemaValidator(
+        min_length=7,
+    ),
+    StrSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    pass
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/tag.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/tag.py
new file mode 100644
index 00000000000..1b38c173ce0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/tag.py
@@ -0,0 +1,89 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Tag(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    id = Int64Schema
+    name = StrSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        id: typing.Union[id, Unset] = unset,
+        name: typing.Union[name, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Tag':
+        return super().__new__(
+            cls,
+            *args,
+            id=id,
+            name=name,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/triangle.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/triangle.py
new file mode 100644
index 00000000000..c312855b6bb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/triangle.py
@@ -0,0 +1,119 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Triangle(
+    ComposedSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+
+    @classmethod
+    @property
+    def _discriminator(cls):
+        return {
+            'triangleType': {
+                'EquilateralTriangle': EquilateralTriangle,
+                'IsoscelesTriangle': IsoscelesTriangle,
+                'ScaleneTriangle': ScaleneTriangle,
+            }
+        }
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [
+            ],
+            'oneOf': [
+                EquilateralTriangle,
+                IsoscelesTriangle,
+                ScaleneTriangle,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Triangle':
+        return super().__new__(
+            cls,
+            *args,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
+
+from petstore_api.model.equilateral_triangle import EquilateralTriangle
+from petstore_api.model.isosceles_triangle import IsoscelesTriangle
+from petstore_api.model.scalene_triangle import ScaleneTriangle
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/triangle_interface.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/triangle_interface.py
new file mode 100644
index 00000000000..a36fd79ef3f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/triangle_interface.py
@@ -0,0 +1,106 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class TriangleInterface(
+    AnyTypeSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'shapeType',
+        'triangleType',
+    ))
+    
+    
+    class shapeType(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "Triangle": "TRIANGLE",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def TRIANGLE(cls):
+            return cls._enum_by_value["Triangle"]("Triangle")
+    triangleType = StrSchema
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, str, date, datetime, int, float, decimal.Decimal, None, list, tuple, bytes],
+        shapeType: shapeType,
+        triangleType: triangleType,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'TriangleInterface':
+        return super().__new__(
+            cls,
+            *args,
+            shapeType=shapeType,
+            triangleType=triangleType,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/user.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/user.py
new file mode 100644
index 00000000000..cf29c50f64f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/user.py
@@ -0,0 +1,139 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class User(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    id = Int64Schema
+    username = StrSchema
+    firstName = StrSchema
+    lastName = StrSchema
+    email = StrSchema
+    password = StrSchema
+    phone = StrSchema
+    userStatus = Int32Schema
+    objectWithNoDeclaredProps = DictSchema
+    
+    
+    class objectWithNoDeclaredPropsNullable(
+        _SchemaTypeChecker(typing.Union[frozendict, none_type, ]),
+        DictBase,
+        NoneBase,
+        Schema
+    ):
+    
+        def __new__(
+            cls,
+            *args: typing.Union[dict, frozendict, None, ],
+            _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+            **kwargs: typing.Type[Schema],
+        ) -> 'objectWithNoDeclaredPropsNullable':
+            return super().__new__(
+                cls,
+                *args,
+                _instantiation_metadata=_instantiation_metadata,
+                **kwargs,
+            )
+    anyTypeProp = AnyTypeSchema
+    anyTypePropNullable = AnyTypeSchema
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        id: typing.Union[id, Unset] = unset,
+        username: typing.Union[username, Unset] = unset,
+        firstName: typing.Union[firstName, Unset] = unset,
+        lastName: typing.Union[lastName, Unset] = unset,
+        email: typing.Union[email, Unset] = unset,
+        password: typing.Union[password, Unset] = unset,
+        phone: typing.Union[phone, Unset] = unset,
+        userStatus: typing.Union[userStatus, Unset] = unset,
+        objectWithNoDeclaredProps: typing.Union[objectWithNoDeclaredProps, Unset] = unset,
+        objectWithNoDeclaredPropsNullable: typing.Union[objectWithNoDeclaredPropsNullable, Unset] = unset,
+        anyTypeProp: typing.Union[anyTypeProp, Unset] = unset,
+        anyTypePropNullable: typing.Union[anyTypePropNullable, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'User':
+        return super().__new__(
+            cls,
+            *args,
+            id=id,
+            username=username,
+            firstName=firstName,
+            lastName=lastName,
+            email=email,
+            password=password,
+            phone=phone,
+            userStatus=userStatus,
+            objectWithNoDeclaredProps=objectWithNoDeclaredProps,
+            objectWithNoDeclaredPropsNullable=objectWithNoDeclaredPropsNullable,
+            anyTypeProp=anyTypeProp,
+            anyTypePropNullable=anyTypePropNullable,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/whale.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/whale.py
new file mode 100644
index 00000000000..8d6de64ab2c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/whale.py
@@ -0,0 +1,109 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Whale(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'className',
+    ))
+    hasBaleen = BoolSchema
+    hasTeeth = BoolSchema
+    
+    
+    class className(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "whale": "WHALE",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def WHALE(cls):
+            return cls._enum_by_value["whale"]("whale")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        className: className,
+        hasBaleen: typing.Union[hasBaleen, Unset] = unset,
+        hasTeeth: typing.Union[hasTeeth, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Whale':
+        return super().__new__(
+            cls,
+            *args,
+            className=className,
+            hasBaleen=hasBaleen,
+            hasTeeth=hasTeeth,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/model/zebra.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/zebra.py
new file mode 100644
index 00000000000..15bbe41e9b4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/model/zebra.py
@@ -0,0 +1,132 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import re  # noqa: F401
+import sys  # noqa: F401
+import typing  # noqa: F401
+
+from frozendict import frozendict  # noqa: F401
+
+import decimal  # noqa: F401
+from datetime import date, datetime  # noqa: F401
+from frozendict import frozendict  # noqa: F401
+
+from petstore_api.schemas import (  # noqa: F401
+    AnyTypeSchema,
+    ComposedSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    IntSchema,
+    Int32Schema,
+    Int64Schema,
+    Float32Schema,
+    Float64Schema,
+    NumberSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    BoolSchema,
+    BinarySchema,
+    NoneSchema,
+    none_type,
+    InstantiationMetadata,
+    Unset,
+    unset,
+    ComposedBase,
+    ListBase,
+    DictBase,
+    NoneBase,
+    StrBase,
+    IntBase,
+    NumberBase,
+    DateBase,
+    DateTimeBase,
+    BoolBase,
+    BinaryBase,
+    Schema,
+    _SchemaValidator,
+    _SchemaTypeChecker,
+    _SchemaEnumMaker
+)
+
+
+class Zebra(
+    DictSchema
+):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+    """
+    _required_property_names = set((
+        'className',
+    ))
+    
+    
+    class type(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "plains": "PLAINS",
+                "mountain": "MOUNTAIN",
+                "grevys": "GREVYS",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def PLAINS(cls):
+            return cls._enum_by_value["plains"]("plains")
+        
+        @classmethod
+        @property
+        def MOUNTAIN(cls):
+            return cls._enum_by_value["mountain"]("mountain")
+        
+        @classmethod
+        @property
+        def GREVYS(cls):
+            return cls._enum_by_value["grevys"]("grevys")
+    
+    
+    class className(
+        _SchemaEnumMaker(
+            enum_value_to_name={
+                "zebra": "ZEBRA",
+            }
+        ),
+        StrSchema
+    ):
+        
+        @classmethod
+        @property
+        def ZEBRA(cls):
+            return cls._enum_by_value["zebra"]("zebra")
+
+
+    def __new__(
+        cls,
+        *args: typing.Union[dict, frozendict, ],
+        className: className,
+        type: typing.Union[type, Unset] = unset,
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Type[Schema],
+    ) -> 'Zebra':
+        return super().__new__(
+            cls,
+            *args,
+            className=className,
+            type=type,
+            _instantiation_metadata=_instantiation_metadata,
+            **kwargs,
+        )
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/models/__init__.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/models/__init__.py
new file mode 100644
index 00000000000..07e026d2c2f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/models/__init__.py
@@ -0,0 +1,130 @@
+# coding: utf-8
+
+# flake8: noqa
+
+# import all models into this package
+# if you have many models here with many references from one model to another this may
+# raise a RecursionError
+# to avoid this, import only the models that you directly need like:
+# from from petstore_api.model.pet import Pet
+# or import this package, but before doing it, use:
+# import sys
+# sys.setrecursionlimit(n)
+
+from petstore_api.model.additional_properties_class import AdditionalPropertiesClass
+from petstore_api.model.additional_properties_with_array_of_enums import AdditionalPropertiesWithArrayOfEnums
+from petstore_api.model.address import Address
+from petstore_api.model.animal import Animal
+from petstore_api.model.animal_farm import AnimalFarm
+from petstore_api.model.api_response import ApiResponse
+from petstore_api.model.apple import Apple
+from petstore_api.model.apple_req import AppleReq
+from petstore_api.model.array_holding_any_type import ArrayHoldingAnyType
+from petstore_api.model.array_of_array_of_number_only import ArrayOfArrayOfNumberOnly
+from petstore_api.model.array_of_enums import ArrayOfEnums
+from petstore_api.model.array_of_number_only import ArrayOfNumberOnly
+from petstore_api.model.array_test import ArrayTest
+from petstore_api.model.array_with_validations_in_items import ArrayWithValidationsInItems
+from petstore_api.model.banana import Banana
+from petstore_api.model.banana_req import BananaReq
+from petstore_api.model.bar import Bar
+from petstore_api.model.basque_pig import BasquePig
+from petstore_api.model.boolean import Boolean
+from petstore_api.model.boolean_enum import BooleanEnum
+from petstore_api.model.capitalization import Capitalization
+from petstore_api.model.cat import Cat
+from petstore_api.model.cat_all_of import CatAllOf
+from petstore_api.model.category import Category
+from petstore_api.model.child_cat import ChildCat
+from petstore_api.model.child_cat_all_of import ChildCatAllOf
+from petstore_api.model.class_model import ClassModel
+from petstore_api.model.client import Client
+from petstore_api.model.complex_quadrilateral import ComplexQuadrilateral
+from petstore_api.model.complex_quadrilateral_all_of import ComplexQuadrilateralAllOf
+from petstore_api.model.composed_any_of_different_types_no_validations import ComposedAnyOfDifferentTypesNoValidations
+from petstore_api.model.composed_array import ComposedArray
+from petstore_api.model.composed_bool import ComposedBool
+from petstore_api.model.composed_none import ComposedNone
+from petstore_api.model.composed_number import ComposedNumber
+from petstore_api.model.composed_object import ComposedObject
+from petstore_api.model.composed_one_of_different_types import ComposedOneOfDifferentTypes
+from petstore_api.model.composed_string import ComposedString
+from petstore_api.model.currency import Currency
+from petstore_api.model.danish_pig import DanishPig
+from petstore_api.model.date_time_test import DateTimeTest
+from petstore_api.model.date_time_with_validations import DateTimeWithValidations
+from petstore_api.model.date_with_validations import DateWithValidations
+from petstore_api.model.decimal_payload import DecimalPayload
+from petstore_api.model.dog import Dog
+from petstore_api.model.dog_all_of import DogAllOf
+from petstore_api.model.drawing import Drawing
+from petstore_api.model.enum_arrays import EnumArrays
+from petstore_api.model.enum_class import EnumClass
+from petstore_api.model.enum_test import EnumTest
+from petstore_api.model.equilateral_triangle import EquilateralTriangle
+from petstore_api.model.equilateral_triangle_all_of import EquilateralTriangleAllOf
+from petstore_api.model.file import File
+from petstore_api.model.file_schema_test_class import FileSchemaTestClass
+from petstore_api.model.foo import Foo
+from petstore_api.model.format_test import FormatTest
+from petstore_api.model.fruit import Fruit
+from petstore_api.model.fruit_req import FruitReq
+from petstore_api.model.gm_fruit import GmFruit
+from petstore_api.model.grandparent_animal import GrandparentAnimal
+from petstore_api.model.has_only_read_only import HasOnlyReadOnly
+from petstore_api.model.health_check_result import HealthCheckResult
+from petstore_api.model.inline_response_default import InlineResponseDefault
+from petstore_api.model.integer_enum import IntegerEnum
+from petstore_api.model.integer_enum_big import IntegerEnumBig
+from petstore_api.model.integer_enum_one_value import IntegerEnumOneValue
+from petstore_api.model.integer_enum_with_default_value import IntegerEnumWithDefaultValue
+from petstore_api.model.integer_max10 import IntegerMax10
+from petstore_api.model.integer_min15 import IntegerMin15
+from petstore_api.model.isosceles_triangle import IsoscelesTriangle
+from petstore_api.model.isosceles_triangle_all_of import IsoscelesTriangleAllOf
+from petstore_api.model.mammal import Mammal
+from petstore_api.model.map_test import MapTest
+from petstore_api.model.mixed_properties_and_additional_properties_class import MixedPropertiesAndAdditionalPropertiesClass
+from petstore_api.model.model200_response import Model200Response
+from petstore_api.model.model_return import ModelReturn
+from petstore_api.model.money import Money
+from petstore_api.model.name import Name
+from petstore_api.model.no_additional_properties import NoAdditionalProperties
+from petstore_api.model.nullable_class import NullableClass
+from petstore_api.model.nullable_shape import NullableShape
+from petstore_api.model.nullable_string import NullableString
+from petstore_api.model.number import Number
+from petstore_api.model.number_only import NumberOnly
+from petstore_api.model.number_with_validations import NumberWithValidations
+from petstore_api.model.object_interface import ObjectInterface
+from petstore_api.model.object_model_with_ref_props import ObjectModelWithRefProps
+from petstore_api.model.object_with_decimal_properties import ObjectWithDecimalProperties
+from petstore_api.model.object_with_difficultly_named_props import ObjectWithDifficultlyNamedProps
+from petstore_api.model.object_with_validations import ObjectWithValidations
+from petstore_api.model.order import Order
+from petstore_api.model.parent_pet import ParentPet
+from petstore_api.model.pet import Pet
+from petstore_api.model.pig import Pig
+from petstore_api.model.player import Player
+from petstore_api.model.quadrilateral import Quadrilateral
+from petstore_api.model.quadrilateral_interface import QuadrilateralInterface
+from petstore_api.model.read_only_first import ReadOnlyFirst
+from petstore_api.model.scalene_triangle import ScaleneTriangle
+from petstore_api.model.scalene_triangle_all_of import ScaleneTriangleAllOf
+from petstore_api.model.shape import Shape
+from petstore_api.model.shape_or_null import ShapeOrNull
+from petstore_api.model.simple_quadrilateral import SimpleQuadrilateral
+from petstore_api.model.simple_quadrilateral_all_of import SimpleQuadrilateralAllOf
+from petstore_api.model.some_object import SomeObject
+from petstore_api.model.special_model_name import SpecialModelName
+from petstore_api.model.string import String
+from petstore_api.model.string_boolean_map import StringBooleanMap
+from petstore_api.model.string_enum import StringEnum
+from petstore_api.model.string_enum_with_default_value import StringEnumWithDefaultValue
+from petstore_api.model.string_with_validation import StringWithValidation
+from petstore_api.model.tag import Tag
+from petstore_api.model.triangle import Triangle
+from petstore_api.model.triangle_interface import TriangleInterface
+from petstore_api.model.user import User
+from petstore_api.model.whale import Whale
+from petstore_api.model.zebra import Zebra
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py
new file mode 100644
index 00000000000..7724b98a71c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py
@@ -0,0 +1,258 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import logging
+import ssl
+from urllib.parse import urlencode
+import typing
+
+import certifi
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+from petstore_api.exceptions import ApiException, ApiValueError
+
+
+logger = logging.getLogger(__name__)
+
+
+class RESTClientObject(object):
+
+    def __init__(self, configuration, pools_size=4, maxsize=None):
+        # urllib3.PoolManager will pass all kw parameters to connectionpool
+        # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/poolmanager.py#L75  # noqa: E501
+        # https://github.com/shazow/urllib3/blob/f9409436f83aeb79fbaf090181cd81b784f1b8ce/urllib3/connectionpool.py#L680  # noqa: E501
+        # maxsize is the number of requests to host that are allowed in parallel  # noqa: E501
+        # Custom SSL certificates and client certificates: http://urllib3.readthedocs.io/en/latest/advanced-usage.html  # noqa: E501
+
+        # cert_reqs
+        if configuration.verify_ssl:
+            cert_reqs = ssl.CERT_REQUIRED
+        else:
+            cert_reqs = ssl.CERT_NONE
+
+        # ca_certs
+        if configuration.ssl_ca_cert:
+            ca_certs = configuration.ssl_ca_cert
+        else:
+            # if not set certificate file, use Mozilla's root certificates.
+            ca_certs = certifi.where()
+
+        addition_pool_args = {}
+        if configuration.assert_hostname is not None:
+            addition_pool_args['assert_hostname'] = configuration.assert_hostname  # noqa: E501
+
+        if configuration.retries is not None:
+            addition_pool_args['retries'] = configuration.retries
+
+        if configuration.socket_options is not None:
+            addition_pool_args['socket_options'] = configuration.socket_options
+
+        if maxsize is None:
+            if configuration.connection_pool_maxsize is not None:
+                maxsize = configuration.connection_pool_maxsize
+            else:
+                maxsize = 4
+
+        # https pool manager
+        if configuration.proxy:
+            self.pool_manager = urllib3.ProxyManager(
+                num_pools=pools_size,
+                maxsize=maxsize,
+                cert_reqs=cert_reqs,
+                ca_certs=ca_certs,
+                cert_file=configuration.cert_file,
+                key_file=configuration.key_file,
+                proxy_url=configuration.proxy,
+                proxy_headers=configuration.proxy_headers,
+                **addition_pool_args
+            )
+        else:
+            self.pool_manager = urllib3.PoolManager(
+                num_pools=pools_size,
+                maxsize=maxsize,
+                cert_reqs=cert_reqs,
+                ca_certs=ca_certs,
+                cert_file=configuration.cert_file,
+                key_file=configuration.key_file,
+                **addition_pool_args
+            )
+
+    def request(
+        self,
+        method: str,
+        url: str,
+        query_params: typing.Optional[typing.Tuple[typing.Tuple[str, str], ...]] = None,
+        headers: typing.Optional[HTTPHeaderDict] = None,
+        fields: typing.Optional[typing.Tuple[typing.Tuple[str, typing.Any], ...]] = None,
+        body: typing.Optional[typing.Union[str, bytes]] = None,
+        stream: bool = False,
+        timeout: typing.Optional[typing.Union[int, typing.Tuple]] = None,
+    ) -> urllib3.HTTPResponse:
+        """Perform requests.
+
+        :param method: http request method
+        :param url: http request url
+        :param query_params: query parameters in the url
+        :param headers: http request headers
+        :param body: request body, for other types
+        :param fields: request parameters for
+                                `application/x-www-form-urlencoded`
+                                or `multipart/form-data`
+        :param stream: if True, the urllib3.HTTPResponse object will
+                                be returned without reading/decoding response
+                                data. Default is False.
+        :param timeout: timeout setting for this request. If one
+                                number provided, it will be total request
+                                timeout. It can also be a pair (tuple) of
+                                (connection, read) timeouts.
+        """
+        method = method.upper()
+        assert method in ['GET', 'HEAD', 'DELETE', 'POST', 'PUT',
+                          'PATCH', 'OPTIONS']
+
+        if fields and body:
+            raise ApiValueError(
+                "body parameter cannot be used with fields parameter."
+            )
+
+        fields = fields or {}
+        headers = headers or {}
+
+        if timeout:
+            if isinstance(timeout, (int, float)):  # noqa: E501,F821
+                timeout = urllib3.Timeout(total=timeout)
+            elif (isinstance(timeout, tuple) and
+                  len(timeout) == 2):
+                timeout = urllib3.Timeout(connect=timeout[0], read=timeout[1])
+
+        if 'Content-Type' not in headers:
+            headers['Content-Type'] = 'application/json'
+
+        try:
+            # For `POST`, `PUT`, `PATCH`, `OPTIONS`, `DELETE`
+            if method in ['POST', 'PUT', 'PATCH', 'OPTIONS', 'DELETE']:
+                if query_params:
+                    url += '?' + urlencode(query_params)
+                if headers['Content-Type'] == 'application/x-www-form-urlencoded':  # noqa: E501
+                    r = self.pool_manager.request(
+                        method, url,
+                        fields=fields,
+                        encode_multipart=False,
+                        preload_content=not stream,
+                        timeout=timeout,
+                        headers=headers)
+                elif headers['Content-Type'] == 'multipart/form-data':
+                    # must del headers['Content-Type'], or the correct
+                    # Content-Type which generated by urllib3 will be
+                    # overwritten.
+                    del headers['Content-Type']
+                    r = self.pool_manager.request(
+                        method, url,
+                        fields=fields,
+                        encode_multipart=True,
+                        preload_content=not stream,
+                        timeout=timeout,
+                        headers=headers)
+                # Pass a `string` parameter directly in the body to support
+                # other content types than Json when `body` argument is
+                # provided in serialized form
+                elif isinstance(body, str) or isinstance(body, bytes):
+                    request_body = body
+                    r = self.pool_manager.request(
+                        method, url,
+                        body=request_body,
+                        preload_content=not stream,
+                        timeout=timeout,
+                        headers=headers)
+                else:
+                    # Cannot generate the request from given parameters
+                    msg = """Cannot prepare a request message for provided
+                             arguments. Please check that your arguments match
+                             declared content type."""
+                    raise ApiException(status=0, reason=msg)
+            # For `GET`, `HEAD`
+            else:
+                r = self.pool_manager.request(method, url,
+                                              fields=query_params,
+                                              preload_content=not stream,
+                                              timeout=timeout,
+                                              headers=headers)
+        except urllib3.exceptions.SSLError as e:
+            msg = "{0}\n{1}".format(type(e).__name__, str(e))
+            raise ApiException(status=0, reason=msg)
+
+        if not stream:
+            # log response body
+            logger.debug("response body: %s", r.data)
+
+        return r
+
+    def GET(self, url, headers=None, query_params=None, stream=False,
+            timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("GET", url,
+                            headers=headers,
+                            stream=stream,
+                            timeout=timeout,
+                            query_params=query_params, fields=fields)
+
+    def HEAD(self, url, headers=None, query_params=None, stream=False,
+             timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("HEAD", url,
+                            headers=headers,
+                            stream=stream,
+                            timeout=timeout,
+                            query_params=query_params, fields=fields)
+
+    def OPTIONS(self, url, headers=None, query_params=None,
+                body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("OPTIONS", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def DELETE(self, url, headers=None, query_params=None, body=None,
+               stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("DELETE", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def POST(self, url, headers=None, query_params=None,
+             body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("POST", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def PUT(self, url, headers=None, query_params=None,
+            body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("PUT", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
+
+    def PATCH(self, url, headers=None, query_params=None,
+              body=None, stream=False, timeout=None, fields=None) -> urllib3.HTTPResponse:
+        return self.request("PATCH", url,
+                            headers=headers,
+                            query_params=query_params,
+                            stream=stream,
+                            timeout=timeout,
+                            body=body, fields=fields)
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/schemas.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/schemas.py
new file mode 100644
index 00000000000..b896e4ebe4f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/schemas.py
@@ -0,0 +1,2045 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from collections import defaultdict
+from datetime import date, datetime, timedelta  # noqa: F401
+from dataclasses import dataclass
+import functools
+import decimal
+import io
+import os
+import re
+import tempfile
+import typing
+
+from dateutil.parser.isoparser import isoparser, _takes_ascii
+from frozendict import frozendict
+
+from petstore_api.exceptions import (
+    ApiTypeError,
+    ApiValueError,
+)
+from petstore_api.configuration import (
+    Configuration,
+)
+
+
+class Unset(object):
+    """
+    An instance of this class is set as the default value for object type(dict) properties that are optional
+    When a property has an unset value, that property will not be assigned in the dict
+    """
+    pass
+
+unset = Unset()
+
+none_type = type(None)
+file_type = io.IOBase
+
+
+class FileIO(io.FileIO):
+    """
+    A class for storing files
+    Note: this class is not immutable
+    """
+
+    def __new__(cls, arg: typing.Union[io.FileIO, io.BufferedReader]):
+        if isinstance(arg, (io.FileIO, io.BufferedReader)):
+            arg.close()
+            inst = super(FileIO, cls).__new__(cls, arg.name)
+            super(FileIO, inst).__init__(arg.name)
+            return inst
+        raise ApiValueError('FileIO must be passed arg which contains the open file')
+
+
+def update(d: dict, u: dict):
+    """
+    Adds u to d
+    Where each dict is defaultdict(set)
+    """
+    for k, v in u.items():
+        d[k] = d[k].union(v)
+    return d
+
+
+class InstantiationMetadata:
+    """
+    A class to store metadata that is needed when instantiating OpenApi Schema subclasses
+    """
+    def __init__(
+        self,
+        path_to_item: typing.Tuple[typing.Union[str, int], ...] = tuple(['args[0]']),
+        from_server: bool = False,
+        configuration: typing.Optional[Configuration] = None,
+        base_classes: typing.FrozenSet[typing.Type] = frozenset(),
+        path_to_schemas: typing.Optional[typing.Dict[str, typing.Set[typing.Type]]] = None,
+    ):
+        """
+        Args:
+            path_to_item: the path to the current data being instantiated.
+                For {'a': [1]} if the code is handling, 1, then the path is ('args[0]', 'a', 0)
+            from_server: whether or not this data came form the server
+                True when receiving server data
+                False when instantiating model with client side data not form the server
+            configuration: the Configuration instance to use
+                This is needed because in Configuration:
+                - one can disable validation checking
+            base_classes: when deserializing data that matches multiple schemas, this is used to store
+                the schemas that have been traversed. This is used to stop processing when a cycle is seen.
+            path_to_schemas: a dict that goes from path to a list of classes at each path location
+        """
+        self.path_to_item = path_to_item
+        self.from_server = from_server
+        self.configuration = configuration
+        self.base_classes = base_classes
+        if path_to_schemas is None:
+            path_to_schemas = defaultdict(set)
+        self.path_to_schemas = path_to_schemas
+
+    def __repr__(self):
+        return str(self.__dict__)
+
+    def __eq__(self, other):
+        if not isinstance(other, InstantiationMetadata):
+            return False
+        return self.__dict__ == other.__dict__
+
+
+class ValidatorBase:
+    @staticmethod
+    def __is_json_validation_enabled(schema_keyword, configuration=None):
+        """Returns true if JSON schema validation is enabled for the specified
+        validation keyword. This can be used to skip JSON schema structural validation
+        as requested in the configuration.
+
+        Args:
+            schema_keyword (string): the name of a JSON schema validation keyword.
+            configuration (Configuration): the configuration class.
+        """
+
+        return (configuration is None or
+            not hasattr(configuration, '_disabled_client_side_validations') or
+            schema_keyword not in configuration._disabled_client_side_validations)
+
+    @staticmethod
+    def __raise_validation_error_message(value, constraint_msg, constraint_value, path_to_item, additional_txt=""):
+        raise ApiValueError(
+            "Invalid value `{value}`, {constraint_msg} `{constraint_value}`{additional_txt} at {path_to_item}".format(
+                value=value,
+                constraint_msg=constraint_msg,
+                constraint_value=constraint_value,
+                additional_txt=additional_txt,
+                path_to_item=path_to_item,
+            )
+        )
+
+    @classmethod
+    def __check_str_validations(cls,
+            validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if (cls.__is_json_validation_enabled('maxLength', _instantiation_metadata.configuration) and
+                'max_length' in validations and
+                len(input_values) > validations['max_length']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="length must be less than or equal to",
+                constraint_value=validations['max_length'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minLength', _instantiation_metadata.configuration) and
+                'min_length' in validations and
+                len(input_values) < validations['min_length']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="length must be greater than or equal to",
+                constraint_value=validations['min_length'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        checked_value = input_values
+        if (cls.__is_json_validation_enabled('pattern', _instantiation_metadata.configuration) and
+                'regex' in validations):
+            for regex_dict in validations['regex']:
+                flags = regex_dict.get('flags', 0)
+                if not re.search(regex_dict['pattern'], checked_value, flags=flags):
+                    if flags != 0:
+                        # Don't print the regex flags if the flags are not
+                        # specified in the OAS document.
+                        cls.__raise_validation_error_message(
+                            value=input_values,
+                            constraint_msg="must match regular expression",
+                            constraint_value=regex_dict['pattern'],
+                            path_to_item=_instantiation_metadata.path_to_item,
+                            additional_txt=" with flags=`{}`".format(flags)
+                        )
+                    cls.__raise_validation_error_message(
+                        value=input_values,
+                        constraint_msg="must match regular expression",
+                        constraint_value=regex_dict['pattern'],
+                        path_to_item=_instantiation_metadata.path_to_item
+                    )
+
+    @classmethod
+    def __check_tuple_validations(
+            cls, validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if (cls.__is_json_validation_enabled('maxItems', _instantiation_metadata.configuration) and
+                'max_items' in validations and
+                len(input_values) > validations['max_items']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of items must be less than or equal to",
+                constraint_value=validations['max_items'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minItems', _instantiation_metadata.configuration) and
+                'min_items' in validations and
+                len(input_values) < validations['min_items']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of items must be greater than or equal to",
+                constraint_value=validations['min_items'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('uniqueItems', _instantiation_metadata.configuration) and
+                'unique_items' in validations and validations['unique_items'] and input_values):
+            unique_items = []
+            # print(validations)
+            for item in input_values:
+                if item not in unique_items:
+                    unique_items.append(item)
+            if len(input_values) > len(unique_items):
+                cls.__raise_validation_error_message(
+                    value=input_values,
+                    constraint_msg="duplicate items were found, and the tuple must not contain duplicates because",
+                    constraint_value='unique_items==True',
+                    path_to_item=_instantiation_metadata.path_to_item
+                )
+
+    @classmethod
+    def __check_dict_validations(
+            cls, validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if (cls.__is_json_validation_enabled('maxProperties', _instantiation_metadata.configuration) and
+                'max_properties' in validations and
+                len(input_values) > validations['max_properties']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of properties must be less than or equal to",
+                constraint_value=validations['max_properties'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minProperties', _instantiation_metadata.configuration) and
+                'min_properties' in validations and
+                len(input_values) < validations['min_properties']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="number of properties must be greater than or equal to",
+                constraint_value=validations['min_properties'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+    @classmethod
+    def __check_numeric_validations(
+            cls, validations, input_values,
+            _instantiation_metadata: InstantiationMetadata):
+
+        if cls.__is_json_validation_enabled('multipleOf',
+                                      _instantiation_metadata.configuration) and 'multiple_of' in validations:
+            multiple_of_values = validations['multiple_of']
+            for multiple_of_value in multiple_of_values:
+                if (isinstance(input_values, decimal.Decimal) and
+                        not (float(input_values) / multiple_of_value).is_integer()
+                ):
+                    # Note 'multipleOf' will be as good as the floating point arithmetic.
+                    cls.__raise_validation_error_message(
+                        value=input_values,
+                        constraint_msg="value must be a multiple of",
+                        constraint_value=multiple_of_value,
+                        path_to_item=_instantiation_metadata.path_to_item
+                    )
+
+        checking_max_or_min_values = {'exclusive_maximum', 'inclusive_maximum', 'exclusive_minimum',
+                                      'inclusive_minimum'}.isdisjoint(validations) is False
+        if not checking_max_or_min_values:
+            return
+        max_val = input_values
+        min_val = input_values
+
+        if (cls.__is_json_validation_enabled('exclusiveMaximum', _instantiation_metadata.configuration) and
+                'exclusive_maximum' in validations and
+                max_val >= validations['exclusive_maximum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value less than",
+                constraint_value=validations['exclusive_maximum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('maximum', _instantiation_metadata.configuration) and
+                'inclusive_maximum' in validations and
+                max_val > validations['inclusive_maximum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value less than or equal to",
+                constraint_value=validations['inclusive_maximum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('exclusiveMinimum', _instantiation_metadata.configuration) and
+                'exclusive_minimum' in validations and
+                min_val <= validations['exclusive_minimum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value greater than",
+                constraint_value=validations['exclusive_maximum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+        if (cls.__is_json_validation_enabled('minimum', _instantiation_metadata.configuration) and
+                'inclusive_minimum' in validations and
+                min_val < validations['inclusive_minimum']):
+            cls.__raise_validation_error_message(
+                value=input_values,
+                constraint_msg="must be a value greater than or equal to",
+                constraint_value=validations['inclusive_minimum'],
+                path_to_item=_instantiation_metadata.path_to_item
+            )
+
+    @classmethod
+    def _check_validations_for_types(
+            cls,
+            validations,
+            input_values,
+            _instantiation_metadata: InstantiationMetadata
+    ):
+        if isinstance(input_values, str):
+            cls.__check_str_validations(validations, input_values, _instantiation_metadata)
+        elif isinstance(input_values, tuple):
+            cls.__check_tuple_validations(validations, input_values, _instantiation_metadata)
+        elif isinstance(input_values, frozendict):
+            cls.__check_dict_validations(validations, input_values, _instantiation_metadata)
+        elif isinstance(input_values, decimal.Decimal):
+            cls.__check_numeric_validations(validations, input_values, _instantiation_metadata)
+        try:
+            return super()._validate_validations_pass(input_values, _instantiation_metadata)
+        except AttributeError:
+            return True
+
+
+class Validator(typing.Protocol):
+    def _validate_validations_pass(
+        cls,
+        input_values,
+        _instantiation_metadata: InstantiationMetadata
+    ):
+        pass
+
+
+def _SchemaValidator(**validations: typing.Union[str, bool, None, int, float, list[dict[str, typing.Union[str, int, float]]]]) -> Validator:
+    class SchemaValidator(ValidatorBase):
+        @classmethod
+        def _validate_validations_pass(
+                cls,
+                input_values,
+                _instantiation_metadata: InstantiationMetadata
+        ):
+            cls._check_validations_for_types(validations, input_values, _instantiation_metadata)
+            try:
+                return super()._validate_validations_pass(input_values, _instantiation_metadata)
+            except AttributeError:
+                return True
+
+    return SchemaValidator
+
+
+class TypeChecker(typing.Protocol):
+    @classmethod
+    def _validate_type(
+        cls, arg_simple_class: type
+    ) -> typing.Tuple[type]:
+        pass
+
+
+def _SchemaTypeChecker(union_type_cls: typing.Union[typing.Any]) -> TypeChecker:
+    if typing.get_origin(union_type_cls) is typing.Union:
+        union_classes = typing.get_args(union_type_cls)
+    else:
+        # note: when a union of a single class is passed in, the union disappears
+        union_classes = tuple([union_type_cls])
+    """
+    I want the type hint... union_type_cls
+    and to use it as a base class but when I do, I get
+    TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases
+    """
+    class SchemaTypeChecker:
+        @classmethod
+        def _validate_type(cls, arg_simple_class: type):
+            if arg_simple_class not in union_classes:
+                return union_classes
+            try:
+                return super()._validate_type(arg_simple_class)
+            except AttributeError:
+                return tuple()
+
+    return SchemaTypeChecker
+
+
+class EnumMakerBase:
+    @classmethod
+    @property
+    def _enum_by_value(
+        cls
+    ) -> type:
+        enum_classes = {}
+        if not hasattr(cls, "_enum_value_to_name"):
+            return enum_classes
+        for enum_value, enum_name in cls._enum_value_to_name.items():
+            base_class = type(enum_value)
+            if base_class is none_type:
+                enum_classes[enum_value] = get_new_class(
+                      "Dynamic" + cls.__name__, (cls, NoneClass))
+                log_cache_usage(get_new_class)
+            elif base_class is bool:
+                enum_classes[enum_value] = get_new_class(
+                      "Dynamic" + cls.__name__, (cls, BoolClass))
+                log_cache_usage(get_new_class)
+            else:
+                enum_classes[enum_value] = get_new_class(
+                    "Dynamic" + cls.__name__, (cls, Singleton, base_class))
+                log_cache_usage(get_new_class)
+        return enum_classes
+
+
+class EnumMakerInterface(typing.Protocol):
+    @classmethod
+    @property
+    def _enum_value_to_name(
+        cls
+    ) -> typing.Dict[typing.Union[str, decimal.Decimal, bool, none_type], str]:
+        pass
+
+    @classmethod
+    @property
+    def _enum_by_value(
+        cls
+    ) -> type:
+        pass
+
+
+def _SchemaEnumMaker(enum_value_to_name: typing.Dict[typing.Union[str, decimal.Decimal, bool, none_type], str]) -> EnumMakerInterface:
+    class SchemaEnumMaker(EnumMakerBase):
+        @classmethod
+        @property
+        def _enum_value_to_name(
+                cls
+        ) -> typing.Dict[typing.Union[str, decimal.Decimal, bool, none_type], str]:
+            pass
+            try:
+                super_enum_value_to_name = super()._enum_value_to_name
+            except AttributeError:
+                return enum_value_to_name
+            intersection = dict(enum_value_to_name.items() & super_enum_value_to_name.items())
+            return intersection
+
+    return SchemaEnumMaker
+
+
+class Singleton:
+    """
+    Enums and singletons are the same
+    The same instance is returned for a given key of (cls, arg)
+    """
+    # TODO use bidict to store this so boolean enums can move through it in reverse to get their own arg value?
+    _instances = {}
+
+    def __new__(cls, *args, **kwargs):
+        if not args:
+            raise ValueError('arg must be passed')
+        arg = args[0]
+        key = (cls, arg)
+        if key not in cls._instances:
+            if arg in {None, True, False}:
+                inst = super().__new__(cls)
+                # inst._value = arg
+                cls._instances[key] = inst
+            else:
+                cls._instances[key] = super().__new__(cls, arg)
+        return cls._instances[key]
+
+    def __repr__(self):
+        return '({}, {})'.format(self.__class__.__name__, self)
+
+
+class NoneClass(Singleton):
+    @classmethod
+    @property
+    def NONE(cls):
+        return cls(None)
+
+    def is_none(self) -> bool:
+        return True
+
+    def __bool__(self) -> bool:
+        return False
+
+
+class BoolClass(Singleton):
+    @classmethod
+    @property
+    def TRUE(cls):
+        return cls(True)
+
+    @classmethod
+    @property
+    def FALSE(cls):
+        return cls(False)
+
+    @functools.cache
+    def __bool__(self) -> bool:
+        for key, instance in self._instances.items():
+            if self is instance:
+                return key[1]
+        raise ValueError('Unable to find the boolean value of this instance')
+
+    def is_true(self):
+        return bool(self)
+
+    def is_false(self):
+        return bool(self)
+
+
+class BoolBase:
+    pass
+
+
+class NoneBase:
+    pass
+
+
+class StrBase:
+    @property
+    def as_str(self) -> str:
+        return self
+
+    @property
+    def as_date(self) -> date:
+        raise Exception('not implemented')
+
+    @property
+    def as_datetime(self) -> datetime:
+        raise Exception('not implemented')
+
+    @property
+    def as_decimal(self) -> decimal.Decimal:
+        raise Exception('not implemented')
+
+
+class CustomIsoparser(isoparser):
+
+    @_takes_ascii
+    def parse_isodatetime(self, dt_str):
+        components, pos = self._parse_isodate(dt_str)
+        if len(dt_str) > pos:
+            if self._sep is None or dt_str[pos:pos + 1] == self._sep:
+                components += self._parse_isotime(dt_str[pos + 1:])
+            else:
+                raise ValueError('String contains unknown ISO components')
+
+        if len(components) > 3 and components[3] == 24:
+            components[3] = 0
+            return datetime(*components) + timedelta(days=1)
+
+        if len(components) <= 3:
+            raise ValueError('Value is not a datetime')
+
+        return datetime(*components)
+
+    @_takes_ascii
+    def parse_isodate(self, datestr):
+        components, pos = self._parse_isodate(datestr)
+
+        if len(datestr) > pos:
+            raise ValueError('String contains invalid time components')
+
+        if len(components) > 3:
+            raise ValueError('String contains invalid time components')
+
+        return date(*components)
+
+
+DEFAULT_ISOPARSER = CustomIsoparser()
+
+
+class DateBase(StrBase):
+    @property
+    @functools.cache
+    def as_date(self) -> date:
+        return DEFAULT_ISOPARSER.parse_isodate(self)
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[str], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, str):
+            try:
+                DEFAULT_ISOPARSER.parse_isodate(arg)
+                return True
+            except ValueError:
+                raise ApiValueError(
+                    "Value does not conform to the required ISO-8601 date format. "
+                    "Invalid value '{}' for type date at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DateBase _validate
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class DateTimeBase:
+    @property
+    @functools.cache
+    def as_datetime(self) -> datetime:
+        return DEFAULT_ISOPARSER.parse_isodatetime(self)
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[str], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, str):
+            try:
+                DEFAULT_ISOPARSER.parse_isodatetime(arg)
+                return True
+            except ValueError:
+                raise ApiValueError(
+                    "Value does not conform to the required ISO-8601 datetime format. "
+                    "Invalid value '{}' for type datetime at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DateTimeBase _validate
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class DecimalBase(StrBase):
+    """
+    A class for storing decimals that are sent over the wire as strings
+    These schemas must remain based on StrBase rather than NumberBase
+    because picking base classes must be deterministic
+    """
+
+    @property
+    @functools.cache
+    def as_decimal(self) -> decimal.Decimal:
+        return decimal.Decimal(self)
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[str], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, str):
+            try:
+                decimal.Decimal(arg)
+                return True
+            except decimal.InvalidOperation:
+                raise ApiValueError(
+                    "Value cannot be converted to a decimal. "
+                    "Invalid value '{}' for type decimal at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DecimalBase _validate
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class NumberBase:
+    @property
+    def as_int(self) -> int:
+        try:
+            return self._as_int
+        except AttributeError:
+            """
+            Note: for some numbers like 9.0 they could be represented as an
+            integer but our code chooses to store them as
+            >>> Decimal('9.0').as_tuple()
+            DecimalTuple(sign=0, digits=(9, 0), exponent=-1)
+            so we can tell that the value came from a float and convert it back to a float
+            during later serialization
+            """
+            if self.as_tuple().exponent < 0:
+                # this could be represented as an integer but should be represented as a float
+                # because that's what it was serialized from
+                raise ApiValueError(f'{self} is not an integer')
+            self._as_int = int(self)
+            return self._as_int
+
+    @property
+    def as_float(self) -> float:
+        try:
+            return self._as_float
+        except AttributeError:
+            if self.as_tuple().exponent >= 0:
+                raise ApiValueError(f'{self} is not an float')
+            self._as_float = float(self)
+            return self._as_float
+
+
+class ListBase:
+    @classmethod
+    def _validate_items(cls, list_items, _instantiation_metadata: InstantiationMetadata):
+        """
+        Ensures that:
+        - values passed in for items are valid
+        Exceptions will be raised if:
+        - invalid arguments were passed in
+
+        Args:
+            list_items: the input list of items
+
+        Raises:
+            ApiTypeError - for missing required arguments, or for invalid properties
+        """
+
+        # if we have definitions for an items schema, use it
+        # otherwise accept anything
+        item_cls = getattr(cls, '_items', AnyTypeSchema)
+        path_to_schemas = defaultdict(set)
+        for i, value in enumerate(list_items):
+            if isinstance(value, item_cls):
+                continue
+            item_instantiation_metadata = InstantiationMetadata(
+                from_server=_instantiation_metadata.from_server,
+                configuration=_instantiation_metadata.configuration,
+                path_to_item=_instantiation_metadata.path_to_item+(i,)
+            )
+            other_path_to_schemas = item_cls._validate(
+                value, _instantiation_metadata=item_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+        return path_to_schemas
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        ListBase _validate
+        We return dynamic classes of different bases depending upon the inputs
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Returns:
+            new_cls (type): the new class
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        arg = args[0]
+        _path_to_schemas = super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+        if not isinstance(arg, tuple):
+            return _path_to_schemas
+        if cls in _instantiation_metadata.base_classes:
+            # we have already moved through this class so stop here
+            return _path_to_schemas
+        _instantiation_metadata.base_classes |= frozenset({cls})
+        other_path_to_schemas = cls._validate_items(arg, _instantiation_metadata=_instantiation_metadata)
+        update(_path_to_schemas, other_path_to_schemas)
+        return _path_to_schemas
+
+    @classmethod
+    def _get_items(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        '''
+        ListBase _get_items
+        '''
+        _instantiation_metadata = InstantiationMetadata() if _instantiation_metadata is None else _instantiation_metadata
+
+        list_items = args[0]
+        cast_items = []
+        # if we have definitions for an items schema, use it
+        # otherwise accept anything
+
+        cls_item_cls = getattr(cls, '_items', AnyTypeSchema)
+        for i, value in enumerate(list_items):
+            item_path_to_item = _instantiation_metadata.path_to_item+(i,)
+            if item_path_to_item in _instantiation_metadata.path_to_schemas:
+                item_cls = _instantiation_metadata.path_to_schemas[item_path_to_item]
+            else:
+                item_cls = cls_item_cls
+
+            if isinstance(value, item_cls):
+                cast_items.append(value)
+                continue
+            item_instantiation_metadata = InstantiationMetadata(
+                configuration=_instantiation_metadata.configuration,
+                from_server=_instantiation_metadata.from_server,
+                path_to_item=item_path_to_item,
+                path_to_schemas=_instantiation_metadata.path_to_schemas,
+            )
+
+            if _instantiation_metadata.from_server:
+                new_value = item_cls._from_openapi_data(value, _instantiation_metadata=item_instantiation_metadata)
+            else:
+                new_value = item_cls(value, _instantiation_metadata=item_instantiation_metadata)
+            cast_items.append(new_value)
+
+        return cast_items
+
+
+class Discriminable:
+    @classmethod
+    def _ensure_discriminator_value_present(cls, disc_property_name: str, _instantiation_metadata: InstantiationMetadata, *args):
+        if not args or args and disc_property_name not in args[0]:
+            # The input data does not contain the discriminator property
+            raise ApiValueError(
+                "Cannot deserialize input data due to missing discriminator. "
+                "The discriminator property '{}' is missing at path: {}".format(disc_property_name, _instantiation_metadata.path_to_item)
+            )
+
+    @classmethod
+    def _get_discriminated_class(cls, disc_property_name: str, disc_payload_value: str):
+        """
+        Used in schemas with discriminators
+        """
+        if not hasattr(cls, '_discriminator'):
+            return None
+        disc = cls._discriminator
+        if disc_property_name not in disc:
+            return None
+        discriminated_cls = disc[disc_property_name].get(disc_payload_value)
+        if discriminated_cls is not None:
+            return discriminated_cls
+        elif not hasattr(cls, '_composed_schemas'):
+            return None
+        # TODO stop traveling if a cycle is hit
+        for allof_cls in cls._composed_schemas['allOf']:
+            discriminated_cls = allof_cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=disc_payload_value)
+            if discriminated_cls is not None:
+                return discriminated_cls
+        for oneof_cls in cls._composed_schemas['oneOf']:
+            discriminated_cls = oneof_cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=disc_payload_value)
+            if discriminated_cls is not None:
+                return discriminated_cls
+        for anyof_cls in cls._composed_schemas['anyOf']:
+            discriminated_cls = anyof_cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=disc_payload_value)
+            if discriminated_cls is not None:
+                return discriminated_cls
+        return None
+
+
+class DictBase(Discriminable):
+    # subclass properties
+    _required_property_names = set()
+
+    @classmethod
+    def _validate_arg_presence(cls, arg):
+        """
+        Ensures that:
+        - all required arguments are passed in
+        - the input variable names are valid
+            - present in properties or
+            - accepted because additionalProperties exists
+        Exceptions will be raised if:
+        - invalid arguments were passed in
+            - a var_name is invalid if additionProperties == None and var_name not in _properties
+        - required properties were not passed in
+
+        Args:
+            arg: the input dict
+
+        Raises:
+            ApiTypeError - for missing required arguments, or for invalid properties
+        """
+        seen_required_properties = set()
+        invalid_arguments = []
+        for property_name in arg:
+            if property_name in cls._required_property_names:
+                seen_required_properties.add(property_name)
+            elif property_name in cls._property_names:
+                continue
+            elif cls._additional_properties:
+                continue
+            else:
+                invalid_arguments.append(property_name)
+        missing_required_arguments = list(cls._required_property_names - seen_required_properties)
+        if missing_required_arguments:
+            missing_required_arguments.sort()
+            raise ApiTypeError(
+                "{} is missing {} required argument{}: {}".format(
+                    cls.__name__,
+                    len(missing_required_arguments),
+                    "s" if len(missing_required_arguments) > 1 else "",
+                    missing_required_arguments
+                )
+            )
+        if invalid_arguments:
+            invalid_arguments.sort()
+            raise ApiTypeError(
+                "{} was passed {} invalid argument{}: {}".format(
+                    cls.__name__,
+                    len(invalid_arguments),
+                    "s" if len(invalid_arguments) > 1 else "",
+                    invalid_arguments
+                )
+            )
+
+    @classmethod
+    def _validate_args(cls, arg, _instantiation_metadata: InstantiationMetadata):
+        """
+        Ensures that:
+        - values passed in for properties are valid
+        Exceptions will be raised if:
+        - invalid arguments were passed in
+
+        Args:
+            arg: the input dict
+
+        Raises:
+            ApiTypeError - for missing required arguments, or for invalid properties
+        """
+        path_to_schemas = defaultdict(set)
+        for property_name, value in arg.items():
+            if property_name in cls._required_property_names or property_name in cls._property_names:
+                schema = getattr(cls, property_name)
+            elif cls._additional_properties:
+                schema = cls._additional_properties
+            else:
+                raise ApiTypeError('Unable to find schema for value={} in class={} at path_to_item={}'.format(
+                    value, cls, _instantiation_metadata.path_to_item+(property_name,)
+                ))
+            if isinstance(value, schema):
+                continue
+            arg_instantiation_metadata = InstantiationMetadata(
+                from_server=_instantiation_metadata.from_server,
+                configuration=_instantiation_metadata.configuration,
+                path_to_item=_instantiation_metadata.path_to_item+(property_name,)
+            )
+            other_path_to_schemas = schema._validate(value, _instantiation_metadata=arg_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+            _instantiation_metadata.path_to_schemas.update(arg_instantiation_metadata.path_to_schemas)
+        return path_to_schemas
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DictBase _validate
+        We return dynamic classes of different bases depending upon the inputs
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Returns:
+            new_cls (type): the new class
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        if args and isinstance(args[0], cls):
+            # an instance of the correct type was passed in
+            return {}
+        arg = args[0]
+        _path_to_schemas = super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+        if not isinstance(arg, frozendict):
+            return _path_to_schemas
+        cls._validate_arg_presence(args[0])
+        other_path_to_schemas = cls._validate_args(args[0], _instantiation_metadata=_instantiation_metadata)
+        update(_path_to_schemas, other_path_to_schemas)
+        try:
+            _discriminator = cls._discriminator
+        except AttributeError:
+            return _path_to_schemas
+        # discriminator exists
+        disc_prop_name = list(_discriminator.keys())[0]
+        cls._ensure_discriminator_value_present(disc_prop_name, _instantiation_metadata, *args)
+        discriminated_cls = cls._get_discriminated_class(
+            disc_property_name=disc_prop_name, disc_payload_value=arg[disc_prop_name])
+        if discriminated_cls is None:
+            raise ApiValueError(
+                "Invalid discriminator value was passed in to {}.{} Only the values {} are allowed at {}".format(
+                    cls.__name__,
+                    disc_prop_name,
+                    list(_discriminator[disc_prop_name].keys()),
+                    _instantiation_metadata.path_to_item + (disc_prop_name,)
+                )
+            )
+        if discriminated_cls in _instantiation_metadata.base_classes:
+            # we have already moved through this class so stop here
+            return _path_to_schemas
+        _instantiation_metadata.base_classes |= frozenset({cls})
+        other_path_to_schemas = discriminated_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+        update(_path_to_schemas, other_path_to_schemas)
+        return _path_to_schemas
+
+    @classmethod
+    @property
+    def _additional_properties(cls):
+        return AnyTypeSchema
+
+    @classmethod
+    @property
+    @functools.cache
+    def _property_names(cls):
+        property_names = set()
+        for var_name, var_value in cls.__dict__.items():
+            # referenced models are classmethods
+            is_classmethod = type(var_value) is classmethod
+            if is_classmethod:
+                property_names.add(var_name)
+                continue
+            is_class = type(var_value) is type
+            if not is_class:
+                continue
+            if not issubclass(var_value, Schema):
+                continue
+            if var_name == '_additional_properties':
+                continue
+            property_names.add(var_name)
+        property_names = list(property_names)
+        property_names.sort()
+        return tuple(property_names)
+
+    @classmethod
+    def _get_properties(cls, arg: typing.Dict[str, typing.Any], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        DictBase _get_properties, this is how properties are set
+        These values already passed validation
+        """
+        dict_items = {}
+        # if we have definitions for property schemas convert values using it
+        # otherwise accept anything
+
+        _instantiation_metadata = InstantiationMetadata() if _instantiation_metadata is None else _instantiation_metadata
+
+        for property_name_js, value in arg.items():
+            property_cls = getattr(cls, property_name_js, cls._additional_properties)
+            property_path_to_item = _instantiation_metadata.path_to_item+(property_name_js,)
+            stored_property_cls = _instantiation_metadata.path_to_schemas.get(property_path_to_item)
+            if stored_property_cls:
+                property_cls = stored_property_cls
+
+            if isinstance(value, property_cls):
+                dict_items[property_name_js] = value
+                continue
+
+            prop_instantiation_metadata = InstantiationMetadata(
+                configuration=_instantiation_metadata.configuration,
+                from_server=_instantiation_metadata.from_server,
+                path_to_item=property_path_to_item,
+                path_to_schemas=_instantiation_metadata.path_to_schemas,
+            )
+            if _instantiation_metadata.from_server:
+                new_value = property_cls._from_openapi_data(value, _instantiation_metadata=prop_instantiation_metadata)
+            else:
+                new_value = property_cls(value, _instantiation_metadata=prop_instantiation_metadata)
+            dict_items[property_name_js] = new_value
+        return dict_items
+
+    def __setattr__(self, name, value):
+        if not isinstance(self, FileIO):
+            raise AttributeError('property setting not supported on immutable instances')
+
+    def __getattr__(self, name):
+        if isinstance(self, frozendict):
+            # if an attribute does not exist
+            try:
+                return self[name]
+            except KeyError as ex:
+                raise AttributeError(str(ex))
+        # print(('non-frozendict __getattr__', name))
+        return super().__getattr__(self, name)
+
+    def __getattribute__(self, name):
+        # print(('__getattribute__', name))
+        # if an attribute does exist (for example as a class property but not as an instance method)
+        try:
+            return self[name]
+        except (KeyError, TypeError):
+            return super().__getattribute__(name)
+
+
+inheritable_primitive_types_set = {decimal.Decimal, str, tuple, frozendict, FileIO, bytes}
+
+
+class Schema:
+    """
+    the base class of all swagger/openapi schemas/models
+
+    ensures that:
+    - payload passes required validations
+    - payload is of allowed types
+    - payload value is an allowed enum value
+    """
+
+    @staticmethod
+    def __get_simple_class(input_value):
+        """Returns an input_value's simple class that we will use for type checking
+
+        Args:
+            input_value (class/class_instance): the item for which we will return
+                                                the simple class
+        """
+        if isinstance(input_value, tuple):
+            return tuple
+        elif isinstance(input_value, frozendict):
+            return frozendict
+        elif isinstance(input_value, none_type):
+            return none_type
+        elif isinstance(input_value, bytes):
+            return bytes
+        elif isinstance(input_value, (io.FileIO, io.BufferedReader)):
+            return FileIO
+        elif isinstance(input_value, bool):
+            # this must be higher than the int check because
+            # isinstance(True, int) == True
+            return bool
+        elif isinstance(input_value, int):
+            return int
+        elif isinstance(input_value, float):
+            return float
+        elif isinstance(input_value, datetime):
+            # this must be higher than the date check because
+            # isinstance(datetime_instance, date) == True
+            return datetime
+        elif isinstance(input_value, date):
+            return date
+        elif isinstance(input_value, str):
+            return str
+        return type(input_value)
+
+    @staticmethod
+    def __get_valid_classes_phrase(input_classes):
+        """Returns a string phrase describing what types are allowed"""
+        all_classes = list(input_classes)
+        all_classes = sorted(all_classes, key=lambda cls: cls.__name__)
+        all_class_names = [cls.__name__ for cls in all_classes]
+        if len(all_class_names) == 1:
+            return "is {0}".format(all_class_names[0])
+        return "is one of [{0}]".format(", ".join(all_class_names))
+
+    @classmethod
+    def __type_error_message(
+        cls, var_value=None, var_name=None, valid_classes=None, key_type=None
+    ):
+        """
+        Keyword Args:
+            var_value (any): the variable which has the type_error
+            var_name (str): the name of the variable which has the typ error
+            valid_classes (tuple): the accepted classes for current_item's
+                                      value
+            key_type (bool): False if our value is a value in a dict
+                             True if it is a key in a dict
+                             False if our item is an item in a tuple
+        """
+        key_or_value = "value"
+        if key_type:
+            key_or_value = "key"
+        valid_classes_phrase = cls.__get_valid_classes_phrase(valid_classes)
+        msg = "Invalid type. Required {1} type {2} and " "passed type was {3}".format(
+            var_name,
+            key_or_value,
+            valid_classes_phrase,
+            type(var_value).__name__,
+        )
+        return msg
+
+    @classmethod
+    def __get_type_error(cls, var_value, path_to_item, valid_classes, key_type=False):
+        error_msg = cls.__type_error_message(
+            var_name=path_to_item[-1],
+            var_value=var_value,
+            valid_classes=valid_classes,
+            key_type=key_type,
+        )
+        return ApiTypeError(
+            error_msg,
+            path_to_item=path_to_item,
+            valid_classes=valid_classes,
+            key_type=key_type,
+        )
+
+    @classmethod
+    def _class_by_base_class(cls, base_cls: type) -> type:
+        cls_name = "Dynamic"+cls.__name__
+        if base_cls is bool:
+            new_cls = get_new_class(cls_name, (cls, BoolBase, BoolClass))
+        elif base_cls is str:
+            new_cls = get_new_class(cls_name, (cls, StrBase, str))
+        elif base_cls is decimal.Decimal:
+            new_cls = get_new_class(cls_name, (cls, NumberBase, decimal.Decimal))
+        elif base_cls is tuple:
+            new_cls =  get_new_class(cls_name, (cls, ListBase, tuple))
+        elif base_cls is frozendict:
+            new_cls = get_new_class(cls_name, (cls, DictBase, frozendict))
+        elif base_cls is none_type:
+            new_cls = get_new_class(cls_name, (cls, NoneBase, NoneClass))
+        log_cache_usage(get_new_class)
+        return new_cls
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        Schema _validate
+        Runs all schema validation logic and
+        returns a dynamic class of different bases depending upon the input
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Use cases:
+        1. inheritable type: string/decimal.Decimal/frozendict/tuple
+        2. enum value cases: 'hi', 1 -> no base_class set because the enum includes the base class
+        3. uninheritable type: True/False/None -> no base_class because the base class is not inheritable
+            _enum_by_value will handle this use case
+
+        Required Steps:
+        1. verify type of input is valid vs the allowed _types
+        2. check validations that are applicable for this type of input
+        3. if enums exist, check that the value exists in the enum
+
+        Returns:
+            path_to_schemas: a map of path to schemas
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        arg = args[0]
+
+        base_class = cls.__get_simple_class(arg)
+        failed_type_check_classes = cls._validate_type(base_class)
+        if failed_type_check_classes:
+            raise cls.__get_type_error(
+                arg,
+                _instantiation_metadata.path_to_item,
+                failed_type_check_classes,
+                key_type=False,
+            )
+        if hasattr(cls, '_validate_validations_pass'):
+            cls._validate_validations_pass(arg, _instantiation_metadata)
+        path_to_schemas = defaultdict(set)
+        path_to_schemas[_instantiation_metadata.path_to_item].add(cls)
+
+        if hasattr(cls, "_enum_by_value"):
+            cls._validate_enum_value(arg)
+            return path_to_schemas
+
+        if base_class is none_type or base_class is bool:
+            return path_to_schemas
+
+        path_to_schemas[_instantiation_metadata.path_to_item].add(base_class)
+        return path_to_schemas
+
+    @classmethod
+    def _validate_enum_value(cls, arg):
+        try:
+            cls._enum_by_value[arg]
+        except KeyError:
+            raise ApiValueError("Invalid value {} passed in to {}, {}".format(arg, cls, cls._enum_value_to_name))
+
+    @classmethod
+    def __get_new_cls(cls, arg, _instantiation_metadata: InstantiationMetadata):
+        """
+        PATH 1 - make a new dynamic class and return an instance of that class
+        We are making an instance of cls, but instead of making cls
+        make a new class, new_cls
+        which includes dynamic bases including cls
+        return an instance of that new class
+        """
+        if (
+        _instantiation_metadata.path_to_schemas and
+        _instantiation_metadata.path_to_item in _instantiation_metadata.path_to_schemas):
+            chosen_new_cls = _instantiation_metadata.path_to_schemas[_instantiation_metadata.path_to_item]
+            # print('leaving __get_new_cls early for cls {} because path_to_schemas exists'.format(cls))
+            # print(_instantiation_metadata.path_to_item)
+            # print(chosen_new_cls)
+            return chosen_new_cls
+        """
+        Dict property + List Item Assignment Use cases:
+        1. value is NOT an instance of the required schema class
+            the value is validated by _validate
+            _validate returns a key value pair
+            where the key is the path to the item, and the value will be the required manufactured class
+            made out of the matching schemas
+        2. value is an instance of the the correct schema type
+            the value is NOT validated by _validate, _validate only checks that the instance is of the correct schema type
+            for this value, _validate does NOT return an entry for it in _path_to_schemas
+            and in list/dict _get_items,_get_properties the value will be directly assigned
+            because value is of the correct type, and validation was run earlier when the instance was created
+        """
+        _path_to_schemas = cls._validate(arg, _instantiation_metadata=_instantiation_metadata)
+        from pprint import pprint
+        pprint(dict(_path_to_schemas))
+        # loop through it make a new class for each entry
+        for path, schema_classes in _path_to_schemas.items():
+            enum_schema = any(
+                hasattr(this_cls, '_enum_by_value') for this_cls in schema_classes)
+            inheritable_primitive_type = schema_classes.intersection(inheritable_primitive_types_set)
+            chosen_schema_classes = schema_classes
+            suffix = tuple()
+            if inheritable_primitive_type:
+                chosen_schema_classes = schema_classes - inheritable_primitive_types_set
+                if not enum_schema:
+                    # include the inheritable_primitive_type
+                    suffix = tuple(inheritable_primitive_type)
+
+            if len(chosen_schema_classes) == 1 and not suffix:
+                mfg_cls = tuple(chosen_schema_classes)[0]
+            else:
+                x_schema = schema_descendents & chosen_schema_classes
+                if x_schema:
+                    x_schema = x_schema.pop()
+                    if any(c is not x_schema and issubclass(c, x_schema) for c in chosen_schema_classes):
+                        # needed to not have a mro error in get_new_class
+                        chosen_schema_classes.remove(x_schema)
+                used_classes = tuple(sorted(chosen_schema_classes, key=lambda a_cls: a_cls.__name__)) + suffix
+                mfg_cls = get_new_class(class_name='DynamicSchema', bases=used_classes)
+
+            if inheritable_primitive_type and not enum_schema:
+                _instantiation_metadata.path_to_schemas[path] = mfg_cls
+                continue
+
+            # Use case: value is None, True, False, or an enum value
+            # print('choosing enum class for path {} in arg {}'.format(path, arg))
+            value = arg
+            for key in path[1:]:
+                value = value[key]
+            if hasattr(mfg_cls, '_enum_by_value'):
+                mfg_cls = mfg_cls._enum_by_value[value]
+            elif value in {True, False}:
+                mfg_cls = mfg_cls._class_by_base_class(bool)
+            elif value is None:
+                mfg_cls = mfg_cls._class_by_base_class(none_type)
+            else:
+                raise ApiValueError('Unhandled case value={} bases={}'.format(value, mfg_cls.__bases__))
+            _instantiation_metadata.path_to_schemas[path] = mfg_cls
+
+        return _instantiation_metadata.path_to_schemas[_instantiation_metadata.path_to_item]
+
+    @classmethod
+    def __get_new_instance_without_conversion(cls, arg, _instantiation_metadata):
+        # PATH 2 - we have a Dynamic class and we are making an instance of it
+        if issubclass(cls, tuple):
+            items = cls._get_items(arg, _instantiation_metadata=_instantiation_metadata)
+            return super(Schema, cls).__new__(cls, items)
+        elif issubclass(cls, frozendict):
+            properties = cls._get_properties(arg, _instantiation_metadata=_instantiation_metadata)
+            return super(Schema, cls).__new__(cls, properties)
+        """
+        str = openapi str, date, and datetime
+        decimal.Decimal = openapi int and float
+        FileIO = openapi binary type and the user inputs a file
+        bytes = openapi binary type and the user inputs bytes
+        """
+        return super(Schema, cls).__new__(cls, arg)
+
+    @classmethod
+    def _from_openapi_data(
+        cls,
+        arg: typing.Union[
+            str,
+            date,
+            datetime,
+            int,
+            float,
+            decimal.Decimal,
+            bool,
+            None,
+            'Schema',
+            dict,
+            frozendict,
+            tuple,
+            list,
+            io.FileIO,
+            io.BufferedReader,
+            bytes
+        ],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata]
+    ):
+        arg = cast_to_allowed_types(arg, from_server=True)
+        _instantiation_metadata = InstantiationMetadata(from_server=True) if _instantiation_metadata is None else _instantiation_metadata
+        if not _instantiation_metadata.from_server:
+            raise ApiValueError(
+                'from_server must be True in this code path, if you need it to be False, use cls()'
+            )
+        new_cls = cls.__get_new_cls(arg, _instantiation_metadata)
+        new_inst = new_cls.__get_new_instance_without_conversion(arg, _instantiation_metadata)
+        return new_inst
+
+    @staticmethod
+    def __get_input_dict(*args, **kwargs) -> frozendict:
+        input_dict = {}
+        if args and isinstance(args[0], (dict, frozendict)):
+            input_dict.update(args[0])
+        if kwargs:
+            input_dict.update(kwargs)
+        return frozendict(input_dict)
+
+    @staticmethod
+    def __remove_unsets(kwargs):
+        return {key: val for key, val in kwargs.items() if val is not unset}
+
+    def __new__(cls, *args: typing.Union[dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema'], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None, **kwargs: typing.Union[dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema', Unset]):
+        """
+        Schema __new__
+
+        Args:
+            args (int/float/decimal.Decimal/str/list/tuple/dict/frozendict/bool/None): the value
+            kwargs (str, int/float/decimal.Decimal/str/list/tuple/dict/frozendict/bool/None): dict values
+            _instantiation_metadata: contains the needed from_server, configuration, path_to_item
+        """
+        kwargs = cls.__remove_unsets(kwargs)
+        if not args and not kwargs:
+            raise TypeError(
+                'No input given. args or kwargs must be given.'
+            )
+        if not kwargs and args and not isinstance(args[0], dict):
+            arg = args[0]
+        else:
+            arg = cls.__get_input_dict(*args, **kwargs)
+        _instantiation_metadata = InstantiationMetadata() if _instantiation_metadata is None else _instantiation_metadata
+        if _instantiation_metadata.from_server:
+            raise ApiValueError(
+                'from_server must be False in this code path, if you need it to be True, use cls._from_openapi_data()'
+            )
+        arg = cast_to_allowed_types(arg, from_server=_instantiation_metadata.from_server)
+        new_cls = cls.__get_new_cls(arg, _instantiation_metadata)
+        return new_cls.__get_new_instance_without_conversion(arg, _instantiation_metadata)
+
+    def __init__(
+        self,
+        *args: typing.Union[
+            dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema'],
+        _instantiation_metadata: typing.Optional[InstantiationMetadata] = None,
+        **kwargs: typing.Union[
+            dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, 'Schema', Unset
+        ]
+    ):
+        """
+        this is needed to fix 'Unexpected argument' warning in pycharm
+        this code does nothing because all Schema instances are immutable
+        this means that all input data is passed into and used in new, and after the new instance is made
+        no new attributes are assigned and init is not used
+        """
+        pass
+
+
+def cast_to_allowed_types(arg: typing.Union[str, date, datetime, decimal.Decimal, int, float, None, dict, frozendict, list, tuple, bytes, Schema], from_server=False) -> typing.Union[str, bytes, decimal.Decimal, None, frozendict, tuple, Schema]:
+    """
+    from_server=False date, datetime -> str
+    int, float -> Decimal
+    StrSchema will convert that to bytes and remember the encoding when we pass in str input
+    """
+    if isinstance(arg, (date, datetime)):
+        if not from_server:
+            return arg.isoformat()
+        # ApiTypeError will be thrown later by _validate_type
+        return arg
+    elif isinstance(arg, bool):
+        """
+        this check must come before isinstance(arg, (int, float))
+        because isinstance(True, int) is True
+        """
+        return arg
+    elif isinstance(arg, decimal.Decimal):
+        return arg
+    elif isinstance(arg, int):
+        return decimal.Decimal(arg)
+    elif isinstance(arg, float):
+        decimal_from_float = decimal.Decimal(arg)
+        if decimal_from_float.as_integer_ratio()[1] == 1:
+            # 9.0 -> Decimal('9.0')
+            # 3.4028234663852886e+38 -> Decimal('340282346638528859811704183484516925440.0')
+            return decimal.Decimal(str(decimal_from_float)+'.0')
+        return decimal_from_float
+    elif isinstance(arg, str):
+        return arg
+    elif isinstance(arg, bytes):
+        return arg
+    elif isinstance(arg, (io.FileIO, io.BufferedReader)):
+        if arg.closed:
+            raise ApiValueError('Invalid file state; file is closed and must be open')
+        return arg
+    elif type(arg) is list or type(arg) is tuple:
+        return tuple([cast_to_allowed_types(item) for item in arg])
+    elif type(arg) is dict or type(arg) is frozendict:
+        return frozendict({key: cast_to_allowed_types(val) for key, val in arg.items() if val is not unset})
+    elif arg is None:
+        return arg
+    elif isinstance(arg, Schema):
+        return arg
+    raise ValueError('Invalid type passed in got input={} type={}'.format(arg, type(arg)))
+
+
+class ComposedBase(Discriminable):
+
+    @classmethod
+    def __get_allof_classes(cls, *args, _instantiation_metadata: InstantiationMetadata):
+        path_to_schemas = defaultdict(set)
+        for allof_cls in cls._composed_schemas['allOf']:
+            if allof_cls in _instantiation_metadata.base_classes:
+                continue
+            other_path_to_schemas = allof_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+        return path_to_schemas
+
+    @classmethod
+    def __get_oneof_class(
+        cls,
+        *args,
+        discriminated_cls,
+        _instantiation_metadata: InstantiationMetadata,
+        path_to_schemas: typing.Dict[typing.Tuple, typing.Set[typing.Type[Schema]]]
+    ):
+        oneof_classes = []
+        chosen_oneof_cls = None
+        original_base_classes = _instantiation_metadata.base_classes
+        new_base_classes = _instantiation_metadata.base_classes
+        path_to_schemas = defaultdict(set)
+        for oneof_cls in cls._composed_schemas['oneOf']:
+            if oneof_cls in path_to_schemas[_instantiation_metadata.path_to_item]:
+                oneof_classes.append(oneof_cls)
+                continue
+            if isinstance(args[0], oneof_cls):
+                # passed in instance is the correct type
+                chosen_oneof_cls = oneof_cls
+                oneof_classes.append(oneof_cls)
+                continue
+            _instantiation_metadata.base_classes = original_base_classes
+            try:
+                path_to_schemas = oneof_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+                new_base_classes = _instantiation_metadata.base_classes
+            except (ApiValueError, ApiTypeError) as ex:
+                if discriminated_cls is not None and oneof_cls is discriminated_cls:
+                    raise ex
+                continue
+            chosen_oneof_cls = oneof_cls
+            oneof_classes.append(oneof_cls)
+        if not oneof_classes:
+            raise ApiValueError(
+                "Invalid inputs given to generate an instance of {}. None "
+                "of the oneOf schemas matched the input data.".format(cls)
+            )
+        elif len(oneof_classes) > 1:
+            raise ApiValueError(
+                "Invalid inputs given to generate an instance of {}. Multiple "
+                "oneOf schemas {} matched the inputs, but a max of one is allowed.".format(cls, oneof_classes)
+            )
+        _instantiation_metadata.base_classes = new_base_classes
+        return path_to_schemas
+
+    @classmethod
+    def __get_anyof_classes(
+        cls,
+        *args,
+        discriminated_cls,
+        _instantiation_metadata: InstantiationMetadata
+    ):
+        anyof_classes = []
+        chosen_anyof_cls = None
+        original_base_classes = _instantiation_metadata.base_classes
+        path_to_schemas = defaultdict(set)
+        for anyof_cls in cls._composed_schemas['anyOf']:
+            if anyof_cls in _instantiation_metadata.base_classes:
+                continue
+            if isinstance(args[0], anyof_cls):
+                # passed in instance is the correct type
+                chosen_anyof_cls = anyof_cls
+                anyof_classes.append(anyof_cls)
+                continue
+
+            _instantiation_metadata.base_classes = original_base_classes
+            try:
+                other_path_to_schemas = anyof_cls._validate(*args, _instantiation_metadata=_instantiation_metadata)
+            except (ApiValueError, ApiTypeError) as ex:
+                if discriminated_cls is not None and anyof_cls is discriminated_cls:
+                    raise ex
+                continue
+            original_base_classes = _instantiation_metadata.base_classes
+            chosen_anyof_cls = anyof_cls
+            anyof_classes.append(anyof_cls)
+            update(path_to_schemas, other_path_to_schemas)
+        if not anyof_classes:
+            raise ApiValueError(
+                "Invalid inputs given to generate an instance of {}. None "
+                "of the anyOf schemas matched the input data.".format(cls)
+            )
+        return path_to_schemas
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        ComposedBase _validate
+        We return dynamic classes of different bases depending upon the inputs
+        This makes it so:
+        - the returned instance is always a subclass of our defining schema
+            - this allows us to check type based on whether an instance is a subclass of a schema
+        - the returned instance is a serializable type (except for None, True, and False) which are enums
+
+        Returns:
+            new_cls (type): the new class
+
+        Raises:
+            ApiValueError: when a string can't be converted into a date or datetime and it must be one of those classes
+            ApiTypeError: when the input type is not in the list of allowed spec types
+        """
+        if args and isinstance(args[0], Schema) and _instantiation_metadata.from_server is False:
+            if isinstance(args[0], cls):
+                # an instance of the correct type was passed in
+                return {}
+            raise ApiTypeError(
+                'Incorrect type passed in, required type was {} and passed type was {} at {}'.format(
+                    cls,
+                    type(args[0]),
+                    _instantiation_metadata.path_to_item
+                )
+            )
+
+        # validation checking on types, validations, and enums
+        path_to_schemas = super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+        _instantiation_metadata.base_classes |= frozenset({cls})
+
+        # process composed schema
+        _discriminator = getattr(cls, '_discriminator', None)
+        discriminated_cls = None
+        if _discriminator and args and isinstance(args[0], frozendict):
+            disc_property_name = list(_discriminator.keys())[0]
+            cls._ensure_discriminator_value_present(disc_property_name, _instantiation_metadata, *args)
+            # get discriminated_cls by looking at the dict in the current class
+            discriminated_cls = cls._get_discriminated_class(
+                disc_property_name=disc_property_name, disc_payload_value=args[0][disc_property_name])
+            if discriminated_cls is None:
+                raise ApiValueError(
+                    "Invalid discriminator value '{}' was passed in to {}.{} Only the values {} are allowed at {}".format(
+                        args[0][disc_property_name],
+                        cls.__name__,
+                        disc_property_name,
+                        list(_discriminator[disc_property_name].keys()),
+                        _instantiation_metadata.path_to_item + (disc_property_name,)
+                    )
+                )
+
+        if cls._composed_schemas['allOf']:
+            other_path_to_schemas = cls.__get_allof_classes(*args, _instantiation_metadata=_instantiation_metadata)
+            update(path_to_schemas, other_path_to_schemas)
+        if cls._composed_schemas['oneOf']:
+            other_path_to_schemas = cls.__get_oneof_class(
+                *args,
+                discriminated_cls=discriminated_cls,
+                _instantiation_metadata=_instantiation_metadata,
+                path_to_schemas=path_to_schemas
+            )
+            update(path_to_schemas, other_path_to_schemas)
+        if cls._composed_schemas['anyOf']:
+            other_path_to_schemas = cls.__get_anyof_classes(
+                *args,
+                discriminated_cls=discriminated_cls,
+                _instantiation_metadata=_instantiation_metadata
+            )
+            update(path_to_schemas, other_path_to_schemas)
+
+        if discriminated_cls is not None:
+            # TODO use an exception from this package here
+            assert discriminated_cls in path_to_schemas[_instantiation_metadata.path_to_item]
+        return path_to_schemas
+
+
+# DictBase, ListBase, NumberBase, StrBase, BoolBase, NoneBase
+class ComposedSchema(
+    _SchemaTypeChecker(typing.Union[none_type, str, decimal.Decimal, bool, tuple, frozendict]),
+    ComposedBase,
+    DictBase,
+    ListBase,
+    NumberBase,
+    StrBase,
+    BoolBase,
+    NoneBase,
+    Schema
+):
+
+    # subclass properties
+    _composed_schemas = {}
+
+    @classmethod
+    def _from_openapi_data(cls, *args: typing.Any, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None, **kwargs):
+        if not args:
+            if not kwargs:
+                raise ApiTypeError('{} is missing required input data in args or kwargs'.format(cls.__name__))
+            args = (kwargs, )
+        return super()._from_openapi_data(args[0], _instantiation_metadata=_instantiation_metadata)
+
+
+class ListSchema(
+    _SchemaTypeChecker(typing.Union[tuple]),
+    ListBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.List[typing.Any], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[list, tuple], **kwargs: InstantiationMetadata):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class NoneSchema(
+    _SchemaTypeChecker(typing.Union[none_type]),
+    NoneBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: None, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: None, **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class NumberSchema(
+    _SchemaTypeChecker(typing.Union[decimal.Decimal]),
+    NumberBase,
+    Schema
+):
+    """
+    This is used for type: number with no format
+    Both integers AND floats are accepted
+    """
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[int, float, decimal.Decimal], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[decimal.Decimal, int, float], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class IntBase(NumberBase):
+    @property
+    def as_int(self) -> int:
+        try:
+            return self._as_int
+        except AttributeError:
+            self._as_int = int(self)
+            return self._as_int
+
+    @classmethod
+    def _validate_format(cls, arg: typing.Optional[decimal.Decimal], _instantiation_metadata: InstantiationMetadata):
+        if isinstance(arg, decimal.Decimal):
+            exponent = arg.as_tuple().exponent
+            if exponent != 0:
+                raise ApiValueError(
+                    "Invalid value '{}' for type integer at {}".format(arg, _instantiation_metadata.path_to_item)
+                )
+
+    @classmethod
+    def _validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        """
+        IntBase _validate
+        TODO what about types = (int, number) -> IntBase, NumberBase? We could drop int and keep number only
+        """
+        cls._validate_format(args[0], _instantiation_metadata=_instantiation_metadata)
+        return super()._validate(*args, _instantiation_metadata=_instantiation_metadata)
+
+
+class IntSchema(IntBase, NumberSchema):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: int, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[decimal.Decimal, int], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class Int32Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-2147483648),
+        inclusive_maximum=decimal.Decimal(2147483647)
+    ),
+    IntSchema
+):
+    pass
+
+class Int64Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-9223372036854775808),
+        inclusive_maximum=decimal.Decimal(9223372036854775807)
+    ),
+    IntSchema
+):
+    pass
+
+
+class Float32Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-3.4028234663852886e+38),
+        inclusive_maximum=decimal.Decimal(3.4028234663852886e+38)
+    ),
+    NumberSchema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[float, decimal.Decimal], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        # todo check format
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+
+class Float64Schema(
+    _SchemaValidator(
+        inclusive_minimum=decimal.Decimal(-1.7976931348623157E+308),
+        inclusive_maximum=decimal.Decimal(1.7976931348623157E+308)
+    ),
+    NumberSchema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[float, decimal.Decimal], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        # todo check format
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+
+class StrSchema(
+    _SchemaTypeChecker(typing.Union[str]),
+    StrBase,
+    Schema
+):
+    """
+    date + datetime string types must inherit from this class
+    That is because one can validate a str payload as both:
+    - type: string (format unset)
+    - type: string, format: date
+    """
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Union[str], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None) -> 'StrSchema':
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: typing.Union[str, date, datetime], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class DateSchema(DateBase, StrSchema):
+
+    def __new__(cls, arg: typing.Union[str, datetime], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class DateTimeSchema(DateTimeBase, StrSchema):
+
+    def __new__(cls, arg: typing.Union[str, datetime], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class DecimalSchema(DecimalBase, StrSchema):
+
+    def __new__(cls, arg: typing.Union[str], **kwargs: typing.Union[InstantiationMetadata]):
+        """
+        Note: Decimals may not be passed in because cast_to_allowed_types is only invoked once for payloads
+        which can be simple (str) or complex (dicts or lists with nested values)
+        Because casting is only done once and recursively casts all values prior to validation then for a potential
+        client side Decimal input if Decimal was accepted as an input in DecimalSchema then one would not know
+        if one was using it for a StrSchema (where it should be cast to str) or one is using it for NumberSchema
+        where it should stay as Decimal.
+        """
+        return super().__new__(cls, arg, **kwargs)
+
+
+class BytesSchema(
+    _SchemaTypeChecker(typing.Union[bytes]),
+    Schema,
+):
+    """
+    this class will subclass bytes and is immutable
+    """
+    def __new__(cls, arg: typing.Union[bytes], **kwargs: typing.Union[InstantiationMetadata]):
+        return super(Schema, cls).__new__(cls, arg)
+
+
+class FileSchema(
+    _SchemaTypeChecker(typing.Union[FileIO]),
+    Schema,
+):
+    """
+    This class is NOT immutable
+    Dynamic classes are built using it for example when AnyType allows in binary data
+    Al other schema classes ARE immutable
+    If one wanted to make this immutable one could make this a DictSchema with required properties:
+    - data = BytesSchema (which would be an immutable bytes based schema)
+    - file_name = StrSchema
+    and cast_to_allowed_types would convert bytes and file instances into dicts containing data + file_name
+    The downside would be that data would be stored in memory which one may not want to do for very large files
+
+    The developer is responsible for closing this file and deleting it
+
+    This class was kept as mutable:
+    - to allow file reading and writing to disk
+    - to be able to preserve file name info
+    """
+
+    def __new__(cls, arg: typing.Union[io.FileIO, io.BufferedReader], **kwargs: typing.Union[InstantiationMetadata]):
+        return super(Schema, cls).__new__(cls, arg)
+
+
+class BinaryBase:
+    pass
+
+
+class BinarySchema(
+    _SchemaTypeChecker(typing.Union[bytes, FileIO]),
+    ComposedBase,
+    BinaryBase,
+    Schema,
+):
+
+    @classmethod
+    @property
+    def _composed_schemas(cls):
+        # we need this here to make our import statements work
+        # we must store _composed_schemas in here so the code is only run
+        # when we invoke this method. If we kept this at the class
+        # level we would get an error because the class level
+        # code would be run when this module is imported, and these composed
+        # classes don't exist yet because their module has not finished
+        # loading
+        return {
+            'allOf': [],
+            'oneOf': [
+                BytesSchema,
+                FileSchema,
+            ],
+            'anyOf': [
+            ],
+        }
+
+    def __new__(cls, arg: typing.Union[io.FileIO, io.BufferedReader, bytes], **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg)
+
+
+class BoolSchema(
+    _SchemaTypeChecker(typing.Union[bool]),
+    BoolBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: bool, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, arg: bool, **kwargs: typing.Union[InstantiationMetadata]):
+        return super().__new__(cls, arg, **kwargs)
+
+
+class AnyTypeSchema(
+    _SchemaTypeChecker(
+        typing.Union[frozendict, tuple, decimal.Decimal, str, bool, none_type, bytes, FileIO]
+    ),
+    DictBase,
+    ListBase,
+    NumberBase,
+    StrBase,
+    BoolBase,
+    NoneBase,
+    Schema
+):
+    pass
+
+
+class DictSchema(
+    _SchemaTypeChecker(typing.Union[frozendict]),
+    DictBase,
+    Schema
+):
+
+    @classmethod
+    def _from_openapi_data(cls, arg: typing.Dict[str, typing.Any], _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+        return super()._from_openapi_data(arg, _instantiation_metadata=_instantiation_metadata)
+
+    def __new__(cls, *args: typing.Union[dict, frozendict], **kwargs: typing.Union[dict, frozendict, list, tuple, decimal.Decimal, float, int, str, date, datetime, bool, None, bytes, Schema, Unset, InstantiationMetadata]):
+        return super().__new__(cls, *args, **kwargs)
+
+
+schema_descendents = set([NoneSchema, DictSchema, ListSchema, NumberSchema, StrSchema, BoolSchema])
+
+
+def deserialize_file(response_data, configuration, content_disposition=None):
+    """Deserializes body to file
+
+    Saves response body into a file in a temporary folder,
+    using the filename from the `Content-Disposition` header if provided.
+
+    Args:
+        param response_data (str):  the file data to write
+        configuration (Configuration): the instance to use to convert files
+
+    Keyword Args:
+        content_disposition (str):  the value of the Content-Disposition
+            header
+
+    Returns:
+        (file_type): the deserialized file which is open
+            The user is responsible for closing and reading the file
+    """
+    fd, path = tempfile.mkstemp(dir=configuration.temp_folder_path)
+    os.close(fd)
+    os.remove(path)
+
+    if content_disposition:
+        filename = re.search(r'filename=[\'"]?([^\'"\s]+)[\'"]?',
+                             content_disposition).group(1)
+        path = os.path.join(os.path.dirname(path), filename)
+
+    with open(path, "wb") as f:
+        if isinstance(response_data, str):
+            # change str to bytes so we can write it
+            response_data = response_data.encode('utf-8')
+        f.write(response_data)
+
+    f = open(path, "rb")
+    return f
+
+
+@functools.cache
+def get_new_class(
+    class_name: str,
+    bases: typing.Tuple[typing.Type[typing.Union[Schema, typing.Any]], ...]
+) -> typing.Type[Schema]:
+    """
+    Returns a new class that is made with the subclass bases
+    """
+    return type(class_name, bases, {})
+
+
+LOG_CACHE_USAGE = False
+
+
+def log_cache_usage(cache_fn):
+    if LOG_CACHE_USAGE:
+        print(cache_fn.__name__, cache_fn.cache_info())
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/signing.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/signing.py
new file mode 100644
index 00000000000..22b3bf2bf1d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/signing.py
@@ -0,0 +1,416 @@
+# coding: utf-8
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from base64 import b64encode
+from Crypto.IO import PEM, PKCS8
+from Crypto.Hash import SHA256, SHA512
+from Crypto.PublicKey import RSA, ECC
+from Crypto.Signature import PKCS1_v1_5, pss, DSS
+from email.utils import formatdate
+import json
+import os
+import re
+from time import time
+from urllib.parse import urlencode, urlparse
+
+# The constants below define a subset of HTTP headers that can be included in the
+# HTTP signature scheme. Additional headers may be included in the signature.
+
+# The '(request-target)' header is a calculated field that includes the HTTP verb,
+# the URL path and the URL query.
+HEADER_REQUEST_TARGET = '(request-target)'
+# The time when the HTTP signature was generated.
+HEADER_CREATED = '(created)'
+# The time when the HTTP signature expires. The API server should reject HTTP requests
+# that have expired.
+HEADER_EXPIRES = '(expires)'
+# The 'Host' header.
+HEADER_HOST = 'Host'
+# The 'Date' header.
+HEADER_DATE = 'Date'
+# When the 'Digest' header is included in the HTTP signature, the client automatically
+# computes the digest of the HTTP request body, per RFC 3230.
+HEADER_DIGEST = 'Digest'
+# The 'Authorization' header is automatically generated by the client. It includes
+# the list of signed headers and a base64-encoded signature.
+HEADER_AUTHORIZATION = 'Authorization'
+
+# The constants below define the cryptographic schemes for the HTTP signature scheme.
+SCHEME_HS2019 = 'hs2019'
+SCHEME_RSA_SHA256 = 'rsa-sha256'
+SCHEME_RSA_SHA512 = 'rsa-sha512'
+
+# The constants below define the signature algorithms that can be used for the HTTP
+# signature scheme.
+ALGORITHM_RSASSA_PSS = 'RSASSA-PSS'
+ALGORITHM_RSASSA_PKCS1v15 = 'RSASSA-PKCS1-v1_5'
+
+ALGORITHM_ECDSA_MODE_FIPS_186_3 = 'fips-186-3'
+ALGORITHM_ECDSA_MODE_DETERMINISTIC_RFC6979 = 'deterministic-rfc6979'
+ALGORITHM_ECDSA_KEY_SIGNING_ALGORITHMS = {
+    ALGORITHM_ECDSA_MODE_FIPS_186_3,
+    ALGORITHM_ECDSA_MODE_DETERMINISTIC_RFC6979
+}
+
+# The cryptographic hash algorithm for the message signature.
+HASH_SHA256 = 'sha256'
+HASH_SHA512 = 'sha512'
+
+
+class HttpSigningConfiguration(object):
+    """The configuration parameters for the HTTP signature security scheme.
+    The HTTP signature security scheme is used to sign HTTP requests with a private key
+    which is in possession of the API client.
+    An 'Authorization' header is calculated by creating a hash of select headers,
+    and optionally the body of the HTTP request, then signing the hash value using
+    a private key. The 'Authorization' header is added to outbound HTTP requests.
+
+    NOTE: This class is auto generated by OpenAPI Generator
+
+    Ref: https://openapi-generator.tech
+    Do not edit the class manually.
+
+    :param key_id: A string value specifying the identifier of the cryptographic key,
+        when signing HTTP requests.
+    :param signing_scheme: A string value specifying the signature scheme, when
+        signing HTTP requests.
+        Supported value are hs2019, rsa-sha256, rsa-sha512.
+        Avoid using rsa-sha256, rsa-sha512 as they are deprecated. These values are
+        available for server-side applications that only support the older
+        HTTP signature algorithms.
+    :param private_key_path: A string value specifying the path of the file containing
+        a private key. The private key is used to sign HTTP requests.
+    :param private_key_passphrase: A string value specifying the passphrase to decrypt
+        the private key.
+    :param signed_headers: A list of strings. Each value is the name of a HTTP header
+        that must be included in the HTTP signature calculation.
+        The two special signature headers '(request-target)' and '(created)' SHOULD be
+        included in SignedHeaders.
+        The '(created)' header expresses when the signature was created.
+        The '(request-target)' header is a concatenation of the lowercased :method, an
+        ASCII space, and the :path pseudo-headers.
+        When signed_headers is not specified, the client defaults to a single value,
+        '(created)', in the list of HTTP headers.
+        When SignedHeaders contains the 'Digest' value, the client performs the
+        following operations:
+        1. Calculate a digest of request body, as specified in RFC3230, section 4.3.2.
+        2. Set the 'Digest' header in the request body.
+        3. Include the 'Digest' header and value in the HTTP signature.
+    :param signing_algorithm: A string value specifying the signature algorithm, when
+        signing HTTP requests.
+        Supported values are:
+        1. For RSA keys: RSASSA-PSS, RSASSA-PKCS1-v1_5.
+        2. For ECDSA keys: fips-186-3, deterministic-rfc6979.
+        If None, the signing algorithm is inferred from the private key.
+        The default signing algorithm for RSA keys is RSASSA-PSS.
+        The default signing algorithm for ECDSA keys is fips-186-3.
+    :param hash_algorithm: The hash algorithm for the signature. Supported values are
+        sha256 and sha512.
+        If the signing_scheme is rsa-sha256, the hash algorithm must be set
+        to None or sha256.
+        If the signing_scheme is rsa-sha512, the hash algorithm must be set
+        to None or sha512.
+    :param signature_max_validity: The signature max validity, expressed as
+        a datetime.timedelta value. It must be a positive value.
+    """
+    def __init__(self, key_id, signing_scheme, private_key_path,
+                 private_key_passphrase=None,
+                 signed_headers=None,
+                 signing_algorithm=None,
+                 hash_algorithm=None,
+                 signature_max_validity=None):
+        self.key_id = key_id
+        if signing_scheme not in {SCHEME_HS2019, SCHEME_RSA_SHA256, SCHEME_RSA_SHA512}:
+            raise Exception("Unsupported security scheme: {0}".format(signing_scheme))
+        self.signing_scheme = signing_scheme
+        if not os.path.exists(private_key_path):
+            raise Exception("Private key file does not exist")
+        self.private_key_path = private_key_path
+        self.private_key_passphrase = private_key_passphrase
+        self.signing_algorithm = signing_algorithm
+        self.hash_algorithm = hash_algorithm
+        if signing_scheme == SCHEME_RSA_SHA256:
+            if self.hash_algorithm is None:
+                self.hash_algorithm = HASH_SHA256
+            elif self.hash_algorithm != HASH_SHA256:
+                raise Exception("Hash algorithm must be sha256 when security scheme is %s" %
+                                SCHEME_RSA_SHA256)
+        elif signing_scheme == SCHEME_RSA_SHA512:
+            if self.hash_algorithm is None:
+                self.hash_algorithm = HASH_SHA512
+            elif self.hash_algorithm != HASH_SHA512:
+                raise Exception("Hash algorithm must be sha512 when security scheme is %s" %
+                                SCHEME_RSA_SHA512)
+        elif signing_scheme == SCHEME_HS2019:
+            if self.hash_algorithm is None:
+                self.hash_algorithm = HASH_SHA256
+            elif self.hash_algorithm not in {HASH_SHA256, HASH_SHA512}:
+                raise Exception("Invalid hash algorithm")
+        if signature_max_validity is not None and signature_max_validity.total_seconds() < 0:
+            raise Exception("The signature max validity must be a positive value")
+        self.signature_max_validity = signature_max_validity
+        # If the user has not provided any signed_headers, the default must be set to '(created)',
+        # as specified in the 'HTTP signature' standard.
+        if signed_headers is None or len(signed_headers) == 0:
+            signed_headers = [HEADER_CREATED]
+        if self.signature_max_validity is None and HEADER_EXPIRES in signed_headers:
+            raise Exception(
+                "Signature max validity must be set when "
+                "'(expires)' signature parameter is specified")
+        if len(signed_headers) != len(set(signed_headers)):
+            raise Exception("Cannot have duplicates in the signed_headers parameter")
+        if HEADER_AUTHORIZATION in signed_headers:
+            raise Exception("'Authorization' header cannot be included in signed headers")
+        self.signed_headers = signed_headers
+        self.private_key = None
+        """The private key used to sign HTTP requests.
+           Initialized when the PEM-encoded private key is loaded from a file.
+        """
+        self.host = None
+        """The host name, optionally followed by a colon and TCP port number.
+        """
+        self._load_private_key()
+
+    def get_http_signature_headers(self, resource_path, method, headers, body, query_params):
+        """Create a cryptographic message signature for the HTTP request and add the signed headers.
+
+        :param resource_path : A string representation of the HTTP request resource path.
+        :param method: A string representation of the HTTP request method, e.g. GET, POST.
+        :param headers: A dict containing the HTTP request headers.
+        :param body: The object representing the HTTP request body.
+        :param query_params: A string representing the HTTP request query parameters.
+        :return: A dict of HTTP headers that must be added to the outbound HTTP request.
+        """
+        if method is None:
+            raise Exception("HTTP method must be set")
+        if resource_path is None:
+            raise Exception("Resource path must be set")
+
+        signed_headers_list, request_headers_dict = self._get_signed_header_info(
+            resource_path, method, headers, body, query_params)
+
+        header_items = [
+            "{0}: {1}".format(key.lower(), value) for key, value in signed_headers_list]
+        string_to_sign = "\n".join(header_items)
+
+        digest, digest_prefix = self._get_message_digest(string_to_sign.encode())
+        b64_signed_msg = self._sign_digest(digest)
+
+        request_headers_dict[HEADER_AUTHORIZATION] = self._get_authorization_header(
+            signed_headers_list, b64_signed_msg)
+
+        return request_headers_dict
+
+    def get_public_key(self):
+        """Returns the public key object associated with the private key.
+        """
+        pubkey = None
+        if isinstance(self.private_key, RSA.RsaKey):
+            pubkey = self.private_key.publickey()
+        elif isinstance(self.private_key, ECC.EccKey):
+            pubkey = self.private_key.public_key()
+        return pubkey
+
+    def _load_private_key(self):
+        """Load the private key used to sign HTTP requests.
+            The private key is used to sign HTTP requests as defined in
+            https://datatracker.ietf.org/doc/draft-cavage-http-signatures/.
+        """
+        if self.private_key is not None:
+            return
+        with open(self.private_key_path, 'r') as f:
+            pem_data = f.read()
+            # Verify PEM Pre-Encapsulation Boundary
+            r = re.compile(r"\s*-----BEGIN (.*)-----\s+")
+            m = r.match(pem_data)
+            if not m:
+                raise ValueError("Not a valid PEM pre boundary")
+            pem_header = m.group(1)
+            if pem_header == 'RSA PRIVATE KEY':
+                self.private_key = RSA.importKey(pem_data, self.private_key_passphrase)
+            elif pem_header == 'EC PRIVATE KEY':
+                self.private_key = ECC.import_key(pem_data, self.private_key_passphrase)
+            elif pem_header in {'PRIVATE KEY', 'ENCRYPTED PRIVATE KEY'}:
+                # Key is in PKCS8 format, which is capable of holding many different
+                # types of private keys, not just EC keys.
+                (key_binary, pem_header, is_encrypted) = \
+                    PEM.decode(pem_data, self.private_key_passphrase)
+                (oid, privkey, params) = \
+                    PKCS8.unwrap(key_binary, passphrase=self.private_key_passphrase)
+                if oid == '1.2.840.10045.2.1':
+                    self.private_key = ECC.import_key(pem_data, self.private_key_passphrase)
+                else:
+                    raise Exception("Unsupported key: {0}. OID: {1}".format(pem_header, oid))
+            else:
+                raise Exception("Unsupported key: {0}".format(pem_header))
+            # Validate the specified signature algorithm is compatible with the private key.
+            if self.signing_algorithm is not None:
+                supported_algs = None
+                if isinstance(self.private_key, RSA.RsaKey):
+                    supported_algs = {ALGORITHM_RSASSA_PSS, ALGORITHM_RSASSA_PKCS1v15}
+                elif isinstance(self.private_key, ECC.EccKey):
+                    supported_algs = ALGORITHM_ECDSA_KEY_SIGNING_ALGORITHMS
+                if supported_algs is not None and self.signing_algorithm not in supported_algs:
+                    raise Exception(
+                        "Signing algorithm {0} is not compatible with private key".format(
+                            self.signing_algorithm))
+
+    def _get_signed_header_info(self, resource_path, method, headers, body, query_params):
+        """Build the HTTP headers (name, value) that need to be included in
+        the HTTP signature scheme.
+
+        :param resource_path : A string representation of the HTTP request resource path.
+        :param method: A string representation of the HTTP request method, e.g. GET, POST.
+        :param headers: A dict containing the HTTP request headers.
+        :param body: The object (e.g. a dict) representing the HTTP request body.
+        :param query_params: A string representing the HTTP request query parameters.
+        :return: A tuple containing two dict objects:
+            The first dict contains the HTTP headers that are used to calculate
+            the HTTP signature.
+            The second dict contains the HTTP headers that must be added to
+            the outbound HTTP request.
+        """
+
+        if body is None:
+            body = ''
+        else:
+            body = json.dumps(body)
+
+        # Build the '(request-target)' HTTP signature parameter.
+        target_host = urlparse(self.host).netloc
+        target_path = urlparse(self.host).path
+        request_target = method.lower() + " " + target_path + resource_path
+        if query_params:
+            request_target += "?" + urlencode(query_params)
+
+        # Get UNIX time, e.g. seconds since epoch, not including leap seconds.
+        now = time()
+        # Format date per RFC 7231 section-7.1.1.2. An example is:
+        # Date: Wed, 21 Oct 2015 07:28:00 GMT
+        cdate = formatdate(timeval=now, localtime=False, usegmt=True)
+        # The '(created)' value MUST be a Unix timestamp integer value.
+        # Subsecond precision is not supported.
+        created = int(now)
+        if self.signature_max_validity is not None:
+            expires = now + self.signature_max_validity.total_seconds()
+
+        signed_headers_list = []
+        request_headers_dict = {}
+        for hdr_key in self.signed_headers:
+            hdr_key = hdr_key.lower()
+            if hdr_key == HEADER_REQUEST_TARGET:
+                value = request_target
+            elif hdr_key == HEADER_CREATED:
+                value = '{0}'.format(created)
+            elif hdr_key == HEADER_EXPIRES:
+                value = '{0}'.format(expires)
+            elif hdr_key == HEADER_DATE.lower():
+                value = cdate
+                request_headers_dict[HEADER_DATE] = '{0}'.format(cdate)
+            elif hdr_key == HEADER_DIGEST.lower():
+                request_body = body.encode()
+                body_digest, digest_prefix = self._get_message_digest(request_body)
+                b64_body_digest = b64encode(body_digest.digest())
+                value = digest_prefix + b64_body_digest.decode('ascii')
+                request_headers_dict[HEADER_DIGEST] = '{0}{1}'.format(
+                    digest_prefix, b64_body_digest.decode('ascii'))
+            elif hdr_key == HEADER_HOST.lower():
+                value = target_host
+                request_headers_dict[HEADER_HOST] = '{0}'.format(target_host)
+            else:
+                value = next((v for k, v in headers.items() if k.lower() == hdr_key), None)
+                if value is None:
+                    raise Exception(
+                        "Cannot sign HTTP request. "
+                        "Request does not contain the '{0}' header".format(hdr_key))
+            signed_headers_list.append((hdr_key, value))
+
+        return signed_headers_list, request_headers_dict
+
+    def _get_message_digest(self, data):
+        """Calculates and returns a cryptographic digest of a specified HTTP request.
+
+        :param data: The string representation of the date to be hashed with a cryptographic hash.
+        :return: A tuple of (digest, prefix).
+            The digest is a hashing object that contains the cryptographic digest of
+            the HTTP request.
+            The prefix is a string that identifies the cryptographc hash. It is used
+            to generate the 'Digest' header as specified in RFC 3230.
+        """
+        if self.hash_algorithm == HASH_SHA512:
+            digest = SHA512.new()
+            prefix = 'SHA-512='
+        elif self.hash_algorithm == HASH_SHA256:
+            digest = SHA256.new()
+            prefix = 'SHA-256='
+        else:
+            raise Exception("Unsupported hash algorithm: {0}".format(self.hash_algorithm))
+        digest.update(data)
+        return digest, prefix
+
+    def _sign_digest(self, digest):
+        """Signs a message digest with a private key specified in the signing_info.
+
+        :param digest: A hashing object that contains the cryptographic digest of the HTTP request.
+        :return: A base-64 string representing the cryptographic signature of the input digest.
+        """
+        sig_alg = self.signing_algorithm
+        if isinstance(self.private_key, RSA.RsaKey):
+            if sig_alg is None or sig_alg == ALGORITHM_RSASSA_PSS:
+                # RSASSA-PSS in Section 8.1 of RFC8017.
+                signature = pss.new(self.private_key).sign(digest)
+            elif sig_alg == ALGORITHM_RSASSA_PKCS1v15:
+                # RSASSA-PKCS1-v1_5 in Section 8.2 of RFC8017.
+                signature = PKCS1_v1_5.new(self.private_key).sign(digest)
+            else:
+                raise Exception("Unsupported signature algorithm: {0}".format(sig_alg))
+        elif isinstance(self.private_key, ECC.EccKey):
+            if sig_alg is None:
+                sig_alg = ALGORITHM_ECDSA_MODE_FIPS_186_3
+            if sig_alg in ALGORITHM_ECDSA_KEY_SIGNING_ALGORITHMS:
+                # draft-ietf-httpbis-message-signatures-00 does not specify the ECDSA encoding.
+                # Issue: https://github.com/w3c-ccg/http-signatures/issues/107
+                signature = DSS.new(key=self.private_key, mode=sig_alg,
+                                    encoding='der').sign(digest)
+            else:
+                raise Exception("Unsupported signature algorithm: {0}".format(sig_alg))
+        else:
+            raise Exception("Unsupported private key: {0}".format(type(self.private_key)))
+        return b64encode(signature)
+
+    def _get_authorization_header(self, signed_headers, signed_msg):
+        """Calculates and returns the value of the 'Authorization' header when signing HTTP requests.
+
+        :param signed_headers : A list of tuples. Each value is the name of a HTTP header that
+            must be included in the HTTP signature calculation.
+        :param signed_msg: A base-64 encoded string representation of the signature.
+        :return: The string value of the 'Authorization' header, representing the signature
+            of the HTTP request.
+        """
+        created_ts = None
+        expires_ts = None
+        for k, v in signed_headers:
+            if k == HEADER_CREATED:
+                created_ts = v
+            elif k == HEADER_EXPIRES:
+                expires_ts = v
+        lower_keys = [k.lower() for k, v in signed_headers]
+        headers_value = " ".join(lower_keys)
+
+        auth_str = "Signature keyId=\"{0}\",algorithm=\"{1}\",".format(
+                                                self.key_id, self.signing_scheme)
+        if created_ts is not None:
+            auth_str = auth_str + "created={0},".format(created_ts)
+        if expires_ts is not None:
+            auth_str = auth_str + "expires={0},".format(expires_ts)
+        auth_str = auth_str + "headers=\"{0}\",signature=\"{1}\"".format(
+                                                headers_value, signed_msg.decode('ascii'))
+
+        return auth_str
diff --git a/samples/openapi3/client/petstore/python-experimental/pom.xml b/samples/openapi3/client/petstore/python-experimental/pom.xml
new file mode 100644
index 00000000000..7e737c36111
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/pom.xml
@@ -0,0 +1,46 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>PythonExperimentalOAS3PetstoreTests</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>Python Experimental OpenAPI3 Petstore Client</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.2.1</version>
+                <executions>
+                    <execution>
+                        <id>test</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>make</executable>
+                            <arguments>
+                                <argument>test</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/python-experimental/requirements.txt b/samples/openapi3/client/petstore/python-experimental/requirements.txt
new file mode 100644
index 00000000000..c9227e58a1b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/requirements.txt
@@ -0,0 +1,5 @@
+certifi >= 14.05.14
+frozendict >= 2.0.3
+python_dateutil >= 2.5.3
+setuptools >= 21.0.0
+urllib3 >= 1.15.1
diff --git a/samples/openapi3/client/petstore/python-experimental/setup.cfg b/samples/openapi3/client/petstore/python-experimental/setup.cfg
new file mode 100644
index 00000000000..11433ee875a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/setup.cfg
@@ -0,0 +1,2 @@
+[flake8]
+max-line-length=99
diff --git a/samples/openapi3/client/petstore/python-experimental/setup.py b/samples/openapi3/client/petstore/python-experimental/setup.py
new file mode 100644
index 00000000000..c0194e51636
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/setup.py
@@ -0,0 +1,48 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from setuptools import setup, find_packages  # noqa: H301
+
+NAME = "petstore-api"
+VERSION = "1.0.0"
+# To install the library, run the following
+#
+# python setup.py install
+#
+# prerequisite: setuptools
+# http://pypi.python.org/pypi/setuptools
+
+REQUIRES = [
+  "urllib3 >= 1.15",
+  "certifi",
+  "python-dateutil",
+  "frozendict >= 2.0.3",
+  "pem>=19.3.0",
+  "pycryptodome>=3.9.0",
+]
+
+setup(
+    name=NAME,
+    version=VERSION,
+    description="OpenAPI Petstore",
+    author="OpenAPI Generator community",
+    author_email="team@openapitools.org",
+    url="",
+    keywords=["OpenAPI", "OpenAPI-Generator", "OpenAPI Petstore"],
+    python_requires=">=3.9",
+    install_requires=REQUIRES,
+    packages=find_packages(exclude=["test", "tests"]),
+    include_package_data=True,
+    license="Apache-2.0",
+    long_description="""\
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\  # noqa: E501
+    """
+)
diff --git a/samples/openapi3/client/petstore/python-experimental/test-requirements.txt b/samples/openapi3/client/petstore/python-experimental/test-requirements.txt
new file mode 100644
index 00000000000..36d9b4fa7a8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test-requirements.txt
@@ -0,0 +1,4 @@
+pytest~=4.6.7 # needed for python 3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 3.4
+pycryptodome>=3.9.0
diff --git a/samples/openapi3/client/petstore/python-experimental/test/__init__.py b/samples/openapi3/client/petstore/python-experimental/test/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_additional_properties_class.py b/samples/openapi3/client/petstore/python-experimental/test/test_additional_properties_class.py
new file mode 100644
index 00000000000..3e0f6a96aaa
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_additional_properties_class.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.additional_properties_class import AdditionalPropertiesClass
+
+
+class TestAdditionalPropertiesClass(unittest.TestCase):
+    """AdditionalPropertiesClass unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_AdditionalPropertiesClass(self):
+        """Test AdditionalPropertiesClass"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = AdditionalPropertiesClass()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_additional_properties_with_array_of_enums.py b/samples/openapi3/client/petstore/python-experimental/test/test_additional_properties_with_array_of_enums.py
new file mode 100644
index 00000000000..4e67ade9dde
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_additional_properties_with_array_of_enums.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.additional_properties_with_array_of_enums import AdditionalPropertiesWithArrayOfEnums
+
+
+class TestAdditionalPropertiesWithArrayOfEnums(unittest.TestCase):
+    """AdditionalPropertiesWithArrayOfEnums unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_AdditionalPropertiesWithArrayOfEnums(self):
+        """Test AdditionalPropertiesWithArrayOfEnums"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = AdditionalPropertiesWithArrayOfEnums()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_address.py b/samples/openapi3/client/petstore/python-experimental/test/test_address.py
new file mode 100644
index 00000000000..2890381c264
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_address.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.address import Address
+
+
+class TestAddress(unittest.TestCase):
+    """Address unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Address(self):
+        """Test Address"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Address()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_animal.py b/samples/openapi3/client/petstore/python-experimental/test/test_animal.py
new file mode 100644
index 00000000000..7e244b29bae
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_animal.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.animal import Animal
+
+
+class TestAnimal(unittest.TestCase):
+    """Animal unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Animal(self):
+        """Test Animal"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Animal()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_animal_farm.py b/samples/openapi3/client/petstore/python-experimental/test/test_animal_farm.py
new file mode 100644
index 00000000000..f3d8ff2fa8f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_animal_farm.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.animal_farm import AnimalFarm
+
+
+class TestAnimalFarm(unittest.TestCase):
+    """AnimalFarm unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_AnimalFarm(self):
+        """Test AnimalFarm"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = AnimalFarm()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_another_fake_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_another_fake_api.py
new file mode 100644
index 00000000000..a2e3736712a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_another_fake_api.py
@@ -0,0 +1,36 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.another_fake_api import AnotherFakeApi  # noqa: E501
+
+
+class TestAnotherFakeApi(unittest.TestCase):
+    """AnotherFakeApi unit test stubs"""
+
+    def setUp(self):
+        self.api = AnotherFakeApi()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_call_123_test_special_tags(self):
+        """Test case for call_123_test_special_tags
+
+        To test special tags  # noqa: E501
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_api_response.py b/samples/openapi3/client/petstore/python-experimental/test/test_api_response.py
new file mode 100644
index 00000000000..c75371329f0
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_api_response.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.api_response import ApiResponse
+
+
+class TestApiResponse(unittest.TestCase):
+    """ApiResponse unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ApiResponse(self):
+        """Test ApiResponse"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ApiResponse()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_apple.py b/samples/openapi3/client/petstore/python-experimental/test/test_apple.py
new file mode 100644
index 00000000000..32f95fa8345
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_apple.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.apple import Apple
+
+
+class TestApple(unittest.TestCase):
+    """Apple unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Apple(self):
+        """Test Apple"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Apple()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_apple_req.py b/samples/openapi3/client/petstore/python-experimental/test/test_apple_req.py
new file mode 100644
index 00000000000..767c88cd8a6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_apple_req.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.apple_req import AppleReq
+
+
+class TestAppleReq(unittest.TestCase):
+    """AppleReq unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_AppleReq(self):
+        """Test AppleReq"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = AppleReq()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_array_holding_any_type.py b/samples/openapi3/client/petstore/python-experimental/test/test_array_holding_any_type.py
new file mode 100644
index 00000000000..bcd5c9c3ec5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_array_holding_any_type.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.array_holding_any_type import ArrayHoldingAnyType
+
+
+class TestArrayHoldingAnyType(unittest.TestCase):
+    """ArrayHoldingAnyType unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ArrayHoldingAnyType(self):
+        """Test ArrayHoldingAnyType"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ArrayHoldingAnyType()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_array_of_array_of_number_only.py b/samples/openapi3/client/petstore/python-experimental/test/test_array_of_array_of_number_only.py
new file mode 100644
index 00000000000..2ac8010f06d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_array_of_array_of_number_only.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.array_of_array_of_number_only import ArrayOfArrayOfNumberOnly
+
+
+class TestArrayOfArrayOfNumberOnly(unittest.TestCase):
+    """ArrayOfArrayOfNumberOnly unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ArrayOfArrayOfNumberOnly(self):
+        """Test ArrayOfArrayOfNumberOnly"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ArrayOfArrayOfNumberOnly()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_array_of_enums.py b/samples/openapi3/client/petstore/python-experimental/test/test_array_of_enums.py
new file mode 100644
index 00000000000..43e974c180d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_array_of_enums.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.array_of_enums import ArrayOfEnums
+
+
+class TestArrayOfEnums(unittest.TestCase):
+    """ArrayOfEnums unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ArrayOfEnums(self):
+        """Test ArrayOfEnums"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ArrayOfEnums()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_array_of_number_only.py b/samples/openapi3/client/petstore/python-experimental/test/test_array_of_number_only.py
new file mode 100644
index 00000000000..b0098336e21
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_array_of_number_only.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.array_of_number_only import ArrayOfNumberOnly
+
+
+class TestArrayOfNumberOnly(unittest.TestCase):
+    """ArrayOfNumberOnly unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ArrayOfNumberOnly(self):
+        """Test ArrayOfNumberOnly"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ArrayOfNumberOnly()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_array_test.py b/samples/openapi3/client/petstore/python-experimental/test/test_array_test.py
new file mode 100644
index 00000000000..4efdf344f38
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_array_test.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.array_test import ArrayTest
+
+
+class TestArrayTest(unittest.TestCase):
+    """ArrayTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ArrayTest(self):
+        """Test ArrayTest"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ArrayTest()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_array_with_validations_in_items.py b/samples/openapi3/client/petstore/python-experimental/test/test_array_with_validations_in_items.py
new file mode 100644
index 00000000000..ae9f92a9414
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_array_with_validations_in_items.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.array_with_validations_in_items import ArrayWithValidationsInItems
+
+
+class TestArrayWithValidationsInItems(unittest.TestCase):
+    """ArrayWithValidationsInItems unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ArrayWithValidationsInItems(self):
+        """Test ArrayWithValidationsInItems"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ArrayWithValidationsInItems()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_banana.py b/samples/openapi3/client/petstore/python-experimental/test/test_banana.py
new file mode 100644
index 00000000000..693c03a89f4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_banana.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.banana import Banana
+
+
+class TestBanana(unittest.TestCase):
+    """Banana unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Banana(self):
+        """Test Banana"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Banana()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_banana_req.py b/samples/openapi3/client/petstore/python-experimental/test/test_banana_req.py
new file mode 100644
index 00000000000..683083c66cf
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_banana_req.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.banana_req import BananaReq
+
+
+class TestBananaReq(unittest.TestCase):
+    """BananaReq unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_BananaReq(self):
+        """Test BananaReq"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = BananaReq()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_bar.py b/samples/openapi3/client/petstore/python-experimental/test/test_bar.py
new file mode 100644
index 00000000000..6c041955bb5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_bar.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.bar import Bar
+
+
+class TestBar(unittest.TestCase):
+    """Bar unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Bar(self):
+        """Test Bar"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Bar()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_basque_pig.py b/samples/openapi3/client/petstore/python-experimental/test/test_basque_pig.py
new file mode 100644
index 00000000000..21c243e7d97
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_basque_pig.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.basque_pig import BasquePig
+
+
+class TestBasquePig(unittest.TestCase):
+    """BasquePig unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_BasquePig(self):
+        """Test BasquePig"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = BasquePig()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_boolean.py b/samples/openapi3/client/petstore/python-experimental/test/test_boolean.py
new file mode 100644
index 00000000000..2ae22b6a2bd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_boolean.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.boolean import Boolean
+
+
+class TestBoolean(unittest.TestCase):
+    """Boolean unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Boolean(self):
+        """Test Boolean"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Boolean()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_boolean_enum.py b/samples/openapi3/client/petstore/python-experimental/test/test_boolean_enum.py
new file mode 100644
index 00000000000..ea61d7186ae
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_boolean_enum.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.boolean_enum import BooleanEnum
+
+
+class TestBooleanEnum(unittest.TestCase):
+    """BooleanEnum unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_BooleanEnum(self):
+        """Test BooleanEnum"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = BooleanEnum()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_capitalization.py b/samples/openapi3/client/petstore/python-experimental/test/test_capitalization.py
new file mode 100644
index 00000000000..1b60714649f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_capitalization.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.capitalization import Capitalization
+
+
+class TestCapitalization(unittest.TestCase):
+    """Capitalization unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Capitalization(self):
+        """Test Capitalization"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Capitalization()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_cat.py b/samples/openapi3/client/petstore/python-experimental/test/test_cat.py
new file mode 100644
index 00000000000..571f3b9adca
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_cat.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.cat import Cat
+
+
+class TestCat(unittest.TestCase):
+    """Cat unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Cat(self):
+        """Test Cat"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Cat()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_cat_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_cat_all_of.py
new file mode 100644
index 00000000000..fc203c2dbaa
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_cat_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.cat_all_of import CatAllOf
+
+
+class TestCatAllOf(unittest.TestCase):
+    """CatAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_CatAllOf(self):
+        """Test CatAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = CatAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_category.py b/samples/openapi3/client/petstore/python-experimental/test/test_category.py
new file mode 100644
index 00000000000..a37846446aa
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_category.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.category import Category
+
+
+class TestCategory(unittest.TestCase):
+    """Category unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Category(self):
+        """Test Category"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Category()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_child_cat.py b/samples/openapi3/client/petstore/python-experimental/test/test_child_cat.py
new file mode 100644
index 00000000000..3537d0effcb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_child_cat.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.child_cat import ChildCat
+
+
+class TestChildCat(unittest.TestCase):
+    """ChildCat unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ChildCat(self):
+        """Test ChildCat"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ChildCat()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_child_cat_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_child_cat_all_of.py
new file mode 100644
index 00000000000..98839fa6748
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_child_cat_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.child_cat_all_of import ChildCatAllOf
+
+
+class TestChildCatAllOf(unittest.TestCase):
+    """ChildCatAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ChildCatAllOf(self):
+        """Test ChildCatAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ChildCatAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_class_model.py b/samples/openapi3/client/petstore/python-experimental/test/test_class_model.py
new file mode 100644
index 00000000000..fdbf0e7ff7c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_class_model.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.class_model import ClassModel
+
+
+class TestClassModel(unittest.TestCase):
+    """ClassModel unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ClassModel(self):
+        """Test ClassModel"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ClassModel()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_client.py b/samples/openapi3/client/petstore/python-experimental/test/test_client.py
new file mode 100644
index 00000000000..0222983fc21
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_client.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.client import Client
+
+
+class TestClient(unittest.TestCase):
+    """Client unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Client(self):
+        """Test Client"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Client()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_complex_quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/test/test_complex_quadrilateral.py
new file mode 100644
index 00000000000..e31da4be744
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_complex_quadrilateral.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.complex_quadrilateral import ComplexQuadrilateral
+
+
+class TestComplexQuadrilateral(unittest.TestCase):
+    """ComplexQuadrilateral unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComplexQuadrilateral(self):
+        """Test ComplexQuadrilateral"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComplexQuadrilateral()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_complex_quadrilateral_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_complex_quadrilateral_all_of.py
new file mode 100644
index 00000000000..d6d7fa4cba4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_complex_quadrilateral_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.complex_quadrilateral_all_of import ComplexQuadrilateralAllOf
+
+
+class TestComplexQuadrilateralAllOf(unittest.TestCase):
+    """ComplexQuadrilateralAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComplexQuadrilateralAllOf(self):
+        """Test ComplexQuadrilateralAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComplexQuadrilateralAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_any_of_different_types_no_validations.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_any_of_different_types_no_validations.py
new file mode 100644
index 00000000000..96691e8f9e8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_any_of_different_types_no_validations.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_any_of_different_types_no_validations import ComposedAnyOfDifferentTypesNoValidations
+
+
+class TestComposedAnyOfDifferentTypesNoValidations(unittest.TestCase):
+    """ComposedAnyOfDifferentTypesNoValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedAnyOfDifferentTypesNoValidations(self):
+        """Test ComposedAnyOfDifferentTypesNoValidations"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedAnyOfDifferentTypesNoValidations()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_array.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_array.py
new file mode 100644
index 00000000000..a83aa868cdc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_array.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_array import ComposedArray
+
+
+class TestComposedArray(unittest.TestCase):
+    """ComposedArray unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedArray(self):
+        """Test ComposedArray"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedArray()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_bool.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_bool.py
new file mode 100644
index 00000000000..8ccaed5ee13
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_bool.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_bool import ComposedBool
+
+
+class TestComposedBool(unittest.TestCase):
+    """ComposedBool unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedBool(self):
+        """Test ComposedBool"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedBool()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_none.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_none.py
new file mode 100644
index 00000000000..0669698ed2b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_none.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_none import ComposedNone
+
+
+class TestComposedNone(unittest.TestCase):
+    """ComposedNone unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedNone(self):
+        """Test ComposedNone"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedNone()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_number.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_number.py
new file mode 100644
index 00000000000..162b7bcaf8d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_number.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_number import ComposedNumber
+
+
+class TestComposedNumber(unittest.TestCase):
+    """ComposedNumber unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedNumber(self):
+        """Test ComposedNumber"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedNumber()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_object.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_object.py
new file mode 100644
index 00000000000..a2d8b85a34f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_object.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_object import ComposedObject
+
+
+class TestComposedObject(unittest.TestCase):
+    """ComposedObject unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedObject(self):
+        """Test ComposedObject"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedObject()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_one_of_different_types.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_one_of_different_types.py
new file mode 100644
index 00000000000..c33fd21e5e4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_one_of_different_types.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_one_of_different_types import ComposedOneOfDifferentTypes
+
+
+class TestComposedOneOfDifferentTypes(unittest.TestCase):
+    """ComposedOneOfDifferentTypes unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedOneOfDifferentTypes(self):
+        """Test ComposedOneOfDifferentTypes"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedOneOfDifferentTypes()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_composed_string.py b/samples/openapi3/client/petstore/python-experimental/test/test_composed_string.py
new file mode 100644
index 00000000000..902d75278d4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_composed_string.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_string import ComposedString
+
+
+class TestComposedString(unittest.TestCase):
+    """ComposedString unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedString(self):
+        """Test ComposedString"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ComposedString()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_currency.py b/samples/openapi3/client/petstore/python-experimental/test/test_currency.py
new file mode 100644
index 00000000000..06f8236b892
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_currency.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.currency import Currency
+
+
+class TestCurrency(unittest.TestCase):
+    """Currency unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Currency(self):
+        """Test Currency"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Currency()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_danish_pig.py b/samples/openapi3/client/petstore/python-experimental/test/test_danish_pig.py
new file mode 100644
index 00000000000..e1c66fdf6d2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_danish_pig.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.danish_pig import DanishPig
+
+
+class TestDanishPig(unittest.TestCase):
+    """DanishPig unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_DanishPig(self):
+        """Test DanishPig"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = DanishPig()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_date_time_test.py b/samples/openapi3/client/petstore/python-experimental/test/test_date_time_test.py
new file mode 100644
index 00000000000..597abd5ba8c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_date_time_test.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.date_time_test import DateTimeTest
+
+
+class TestDateTimeTest(unittest.TestCase):
+    """DateTimeTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_DateTimeTest(self):
+        """Test DateTimeTest"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = DateTimeTest()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_date_time_with_validations.py b/samples/openapi3/client/petstore/python-experimental/test/test_date_time_with_validations.py
new file mode 100644
index 00000000000..7f8c4c3bb46
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_date_time_with_validations.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.date_time_with_validations import DateTimeWithValidations
+
+
+class TestDateTimeWithValidations(unittest.TestCase):
+    """DateTimeWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_DateTimeWithValidations(self):
+        """Test DateTimeWithValidations"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = DateTimeWithValidations()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_date_with_validations.py b/samples/openapi3/client/petstore/python-experimental/test/test_date_with_validations.py
new file mode 100644
index 00000000000..2656d3b91fc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_date_with_validations.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.date_with_validations import DateWithValidations
+
+
+class TestDateWithValidations(unittest.TestCase):
+    """DateWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_DateWithValidations(self):
+        """Test DateWithValidations"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = DateWithValidations()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_decimal_payload.py b/samples/openapi3/client/petstore/python-experimental/test/test_decimal_payload.py
new file mode 100644
index 00000000000..b50d4fbc8a6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_decimal_payload.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.decimal_payload import DecimalPayload
+
+
+class TestDecimalPayload(unittest.TestCase):
+    """DecimalPayload unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_DecimalPayload(self):
+        """Test DecimalPayload"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = DecimalPayload()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_default_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_default_api.py
new file mode 100644
index 00000000000..2af6b820e00
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_default_api.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.default_api import DefaultApi  # noqa: E501
+
+
+class TestDefaultApi(unittest.TestCase):
+    """DefaultApi unit test stubs"""
+
+    def setUp(self):
+        self.api = DefaultApi()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_foo_get(self):
+        """Test case for foo_get
+
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_dog.py b/samples/openapi3/client/petstore/python-experimental/test/test_dog.py
new file mode 100644
index 00000000000..4adcdd278cf
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_dog.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.dog import Dog
+
+
+class TestDog(unittest.TestCase):
+    """Dog unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Dog(self):
+        """Test Dog"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Dog()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_dog_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_dog_all_of.py
new file mode 100644
index 00000000000..3a11693e9b1
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_dog_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.dog_all_of import DogAllOf
+
+
+class TestDogAllOf(unittest.TestCase):
+    """DogAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_DogAllOf(self):
+        """Test DogAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = DogAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_drawing.py b/samples/openapi3/client/petstore/python-experimental/test/test_drawing.py
new file mode 100644
index 00000000000..d08e8a6fbed
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_drawing.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.drawing import Drawing
+
+
+class TestDrawing(unittest.TestCase):
+    """Drawing unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Drawing(self):
+        """Test Drawing"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Drawing()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_enum_arrays.py b/samples/openapi3/client/petstore/python-experimental/test/test_enum_arrays.py
new file mode 100644
index 00000000000..55b12169e27
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_enum_arrays.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.enum_arrays import EnumArrays
+
+
+class TestEnumArrays(unittest.TestCase):
+    """EnumArrays unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_EnumArrays(self):
+        """Test EnumArrays"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = EnumArrays()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_enum_class.py b/samples/openapi3/client/petstore/python-experimental/test/test_enum_class.py
new file mode 100644
index 00000000000..18688309ecd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_enum_class.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.enum_class import EnumClass
+
+
+class TestEnumClass(unittest.TestCase):
+    """EnumClass unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_EnumClass(self):
+        """Test EnumClass"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = EnumClass()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_enum_test.py b/samples/openapi3/client/petstore/python-experimental/test/test_enum_test.py
new file mode 100644
index 00000000000..9952acb6820
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_enum_test.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.enum_test import EnumTest
+
+
+class TestEnumTest(unittest.TestCase):
+    """EnumTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_EnumTest(self):
+        """Test EnumTest"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = EnumTest()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_equilateral_triangle.py b/samples/openapi3/client/petstore/python-experimental/test/test_equilateral_triangle.py
new file mode 100644
index 00000000000..62308d48c8a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_equilateral_triangle.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.equilateral_triangle import EquilateralTriangle
+
+
+class TestEquilateralTriangle(unittest.TestCase):
+    """EquilateralTriangle unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_EquilateralTriangle(self):
+        """Test EquilateralTriangle"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = EquilateralTriangle()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_equilateral_triangle_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_equilateral_triangle_all_of.py
new file mode 100644
index 00000000000..8ff85083ffd
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_equilateral_triangle_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.equilateral_triangle_all_of import EquilateralTriangleAllOf
+
+
+class TestEquilateralTriangleAllOf(unittest.TestCase):
+    """EquilateralTriangleAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_EquilateralTriangleAllOf(self):
+        """Test EquilateralTriangleAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = EquilateralTriangleAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_fake_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_fake_api.py
new file mode 100644
index 00000000000..abe26cc6c4d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_fake_api.py
@@ -0,0 +1,192 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.fake_api import FakeApi  # noqa: E501
+
+
+class TestFakeApi(unittest.TestCase):
+    """FakeApi unit test stubs"""
+
+    def setUp(self):
+        self.api = FakeApi()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_additional_properties_with_array_of_enums(self):
+        """Test case for additional_properties_with_array_of_enums
+
+        Additional Properties with Array of Enums  # noqa: E501
+        """
+        pass
+
+    def test_array_model(self):
+        """Test case for array_model
+
+        """
+        pass
+
+    def test_array_of_enums(self):
+        """Test case for array_of_enums
+
+        Array of Enums  # noqa: E501
+        """
+        pass
+
+    def test_body_with_file_schema(self):
+        """Test case for body_with_file_schema
+
+        """
+        pass
+
+    def test_body_with_query_params(self):
+        """Test case for body_with_query_params
+
+        """
+        pass
+
+    def test_boolean(self):
+        """Test case for boolean
+
+        """
+        pass
+
+    def test_case_sensitive_params(self):
+        """Test case for case_sensitive_params
+
+        """
+        pass
+
+    def test_client_model(self):
+        """Test case for client_model
+
+        To test \"client\" model  # noqa: E501
+        """
+        pass
+
+    def test_composed_one_of_different_types(self):
+        """Test case for composed_one_of_different_types
+
+        """
+        pass
+
+    def test_endpoint_parameters(self):
+        """Test case for endpoint_parameters
+
+        Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트   # noqa: E501
+        """
+        pass
+
+    def test_enum_parameters(self):
+        """Test case for enum_parameters
+
+        To test enum parameters  # noqa: E501
+        """
+        pass
+
+    def test_fake_health_get(self):
+        """Test case for fake_health_get
+
+        Health check endpoint  # noqa: E501
+        """
+        pass
+
+    def test_group_parameters(self):
+        """Test case for group_parameters
+
+        Fake endpoint to test group parameters (optional)  # noqa: E501
+        """
+        pass
+
+    def test_inline_additional_properties(self):
+        """Test case for inline_additional_properties
+
+        test inline additionalProperties  # noqa: E501
+        """
+        pass
+
+    def test_json_form_data(self):
+        """Test case for json_form_data
+
+        test json serialization of form data  # noqa: E501
+        """
+        pass
+
+    def test_mammal(self):
+        """Test case for mammal
+
+        """
+        pass
+
+    def test_number_with_validations(self):
+        """Test case for number_with_validations
+
+        """
+        pass
+
+    def test_object_model_with_ref_props(self):
+        """Test case for object_model_with_ref_props
+
+        """
+        pass
+
+    def test_parameter_collisions(self):
+        """Test case for parameter_collisions
+
+        parameter collision case  # noqa: E501
+        """
+        pass
+
+    def test_query_parameter_collection_format(self):
+        """Test case for query_parameter_collection_format
+
+        """
+        pass
+
+    def test_string(self):
+        """Test case for string
+
+        """
+        pass
+
+    def test_string_enum(self):
+        """Test case for string_enum
+
+        """
+        pass
+
+    def test_upload_download_file(self):
+        """Test case for upload_download_file
+
+        uploads a file and downloads a file using application/octet-stream  # noqa: E501
+        """
+        pass
+
+    def test_upload_file(self):
+        """Test case for upload_file
+
+        uploads a file using multipart/form-data  # noqa: E501
+        """
+        pass
+
+    def test_upload_files(self):
+        """Test case for upload_files
+
+        uploads files using multipart/form-data  # noqa: E501
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_fake_classname_tags_123_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_fake_classname_tags_123_api.py
new file mode 100644
index 00000000000..63c46155bd6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_fake_classname_tags_123_api.py
@@ -0,0 +1,36 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.fake_classname_tags_123_api import FakeClassnameTags123Api  # noqa: E501
+
+
+class TestFakeClassnameTags123Api(unittest.TestCase):
+    """FakeClassnameTags123Api unit test stubs"""
+
+    def setUp(self):
+        self.api = FakeClassnameTags123Api()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_classname(self):
+        """Test case for classname
+
+        To test class name in snake case  # noqa: E501
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_file.py b/samples/openapi3/client/petstore/python-experimental/test/test_file.py
new file mode 100644
index 00000000000..240760a67d3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_file.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.file import File
+
+
+class TestFile(unittest.TestCase):
+    """File unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_File(self):
+        """Test File"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = File()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_file_schema_test_class.py b/samples/openapi3/client/petstore/python-experimental/test/test_file_schema_test_class.py
new file mode 100644
index 00000000000..fc4828d0edb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_file_schema_test_class.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.file_schema_test_class import FileSchemaTestClass
+
+
+class TestFileSchemaTestClass(unittest.TestCase):
+    """FileSchemaTestClass unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_FileSchemaTestClass(self):
+        """Test FileSchemaTestClass"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = FileSchemaTestClass()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_foo.py b/samples/openapi3/client/petstore/python-experimental/test/test_foo.py
new file mode 100644
index 00000000000..4ee6344ea27
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_foo.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.foo import Foo
+
+
+class TestFoo(unittest.TestCase):
+    """Foo unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Foo(self):
+        """Test Foo"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Foo()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_format_test.py b/samples/openapi3/client/petstore/python-experimental/test/test_format_test.py
new file mode 100644
index 00000000000..46d4794bbe6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_format_test.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.format_test import FormatTest
+
+
+class TestFormatTest(unittest.TestCase):
+    """FormatTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_FormatTest(self):
+        """Test FormatTest"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = FormatTest()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_fruit.py b/samples/openapi3/client/petstore/python-experimental/test/test_fruit.py
new file mode 100644
index 00000000000..490ce5cf952
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_fruit.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.fruit import Fruit
+
+
+class TestFruit(unittest.TestCase):
+    """Fruit unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Fruit(self):
+        """Test Fruit"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Fruit()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_fruit_req.py b/samples/openapi3/client/petstore/python-experimental/test/test_fruit_req.py
new file mode 100644
index 00000000000..ceae8a93424
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_fruit_req.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.fruit_req import FruitReq
+
+
+class TestFruitReq(unittest.TestCase):
+    """FruitReq unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_FruitReq(self):
+        """Test FruitReq"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = FruitReq()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_gm_fruit.py b/samples/openapi3/client/petstore/python-experimental/test/test_gm_fruit.py
new file mode 100644
index 00000000000..c924c45e559
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_gm_fruit.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.gm_fruit import GmFruit
+
+
+class TestGmFruit(unittest.TestCase):
+    """GmFruit unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_GmFruit(self):
+        """Test GmFruit"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = GmFruit()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_grandparent_animal.py b/samples/openapi3/client/petstore/python-experimental/test/test_grandparent_animal.py
new file mode 100644
index 00000000000..34edef40063
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_grandparent_animal.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.grandparent_animal import GrandparentAnimal
+
+
+class TestGrandparentAnimal(unittest.TestCase):
+    """GrandparentAnimal unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_GrandparentAnimal(self):
+        """Test GrandparentAnimal"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = GrandparentAnimal()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_has_only_read_only.py b/samples/openapi3/client/petstore/python-experimental/test/test_has_only_read_only.py
new file mode 100644
index 00000000000..8ed163b7621
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_has_only_read_only.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.has_only_read_only import HasOnlyReadOnly
+
+
+class TestHasOnlyReadOnly(unittest.TestCase):
+    """HasOnlyReadOnly unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_HasOnlyReadOnly(self):
+        """Test HasOnlyReadOnly"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = HasOnlyReadOnly()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_health_check_result.py b/samples/openapi3/client/petstore/python-experimental/test/test_health_check_result.py
new file mode 100644
index 00000000000..2bf06af9a63
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_health_check_result.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.health_check_result import HealthCheckResult
+
+
+class TestHealthCheckResult(unittest.TestCase):
+    """HealthCheckResult unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_HealthCheckResult(self):
+        """Test HealthCheckResult"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = HealthCheckResult()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_inline_response_default.py b/samples/openapi3/client/petstore/python-experimental/test/test_inline_response_default.py
new file mode 100644
index 00000000000..19408e88f66
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_inline_response_default.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.inline_response_default import InlineResponseDefault
+
+
+class TestInlineResponseDefault(unittest.TestCase):
+    """InlineResponseDefault unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_InlineResponseDefault(self):
+        """Test InlineResponseDefault"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = InlineResponseDefault()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum.py b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum.py
new file mode 100644
index 00000000000..abd3db17c9c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_enum import IntegerEnum
+
+
+class TestIntegerEnum(unittest.TestCase):
+    """IntegerEnum unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IntegerEnum(self):
+        """Test IntegerEnum"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IntegerEnum()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_big.py b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_big.py
new file mode 100644
index 00000000000..d905b1d6404
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_big.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_enum_big import IntegerEnumBig
+
+
+class TestIntegerEnumBig(unittest.TestCase):
+    """IntegerEnumBig unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IntegerEnumBig(self):
+        """Test IntegerEnumBig"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IntegerEnumBig()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_one_value.py b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_one_value.py
new file mode 100644
index 00000000000..f3dee3f395b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_one_value.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_enum_one_value import IntegerEnumOneValue
+
+
+class TestIntegerEnumOneValue(unittest.TestCase):
+    """IntegerEnumOneValue unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IntegerEnumOneValue(self):
+        """Test IntegerEnumOneValue"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IntegerEnumOneValue()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_with_default_value.py b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_with_default_value.py
new file mode 100644
index 00000000000..48ffddb7b02
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_integer_enum_with_default_value.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_enum_with_default_value import IntegerEnumWithDefaultValue
+
+
+class TestIntegerEnumWithDefaultValue(unittest.TestCase):
+    """IntegerEnumWithDefaultValue unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IntegerEnumWithDefaultValue(self):
+        """Test IntegerEnumWithDefaultValue"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IntegerEnumWithDefaultValue()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_integer_max10.py b/samples/openapi3/client/petstore/python-experimental/test/test_integer_max10.py
new file mode 100644
index 00000000000..fd4a0d07930
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_integer_max10.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_max10 import IntegerMax10
+
+
+class TestIntegerMax10(unittest.TestCase):
+    """IntegerMax10 unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IntegerMax10(self):
+        """Test IntegerMax10"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IntegerMax10()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_integer_min15.py b/samples/openapi3/client/petstore/python-experimental/test/test_integer_min15.py
new file mode 100644
index 00000000000..05898df5126
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_integer_min15.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_min15 import IntegerMin15
+
+
+class TestIntegerMin15(unittest.TestCase):
+    """IntegerMin15 unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IntegerMin15(self):
+        """Test IntegerMin15"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IntegerMin15()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_isosceles_triangle.py b/samples/openapi3/client/petstore/python-experimental/test/test_isosceles_triangle.py
new file mode 100644
index 00000000000..c17549e2b1b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_isosceles_triangle.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.isosceles_triangle import IsoscelesTriangle
+
+
+class TestIsoscelesTriangle(unittest.TestCase):
+    """IsoscelesTriangle unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IsoscelesTriangle(self):
+        """Test IsoscelesTriangle"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IsoscelesTriangle()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_isosceles_triangle_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_isosceles_triangle_all_of.py
new file mode 100644
index 00000000000..a9a8903953b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_isosceles_triangle_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.isosceles_triangle_all_of import IsoscelesTriangleAllOf
+
+
+class TestIsoscelesTriangleAllOf(unittest.TestCase):
+    """IsoscelesTriangleAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_IsoscelesTriangleAllOf(self):
+        """Test IsoscelesTriangleAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = IsoscelesTriangleAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_mammal.py b/samples/openapi3/client/petstore/python-experimental/test/test_mammal.py
new file mode 100644
index 00000000000..df83e514618
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_mammal.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.mammal import Mammal
+
+
+class TestMammal(unittest.TestCase):
+    """Mammal unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Mammal(self):
+        """Test Mammal"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Mammal()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_map_test.py b/samples/openapi3/client/petstore/python-experimental/test/test_map_test.py
new file mode 100644
index 00000000000..21305dee99b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_map_test.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.map_test import MapTest
+
+
+class TestMapTest(unittest.TestCase):
+    """MapTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_MapTest(self):
+        """Test MapTest"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = MapTest()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_mixed_properties_and_additional_properties_class.py b/samples/openapi3/client/petstore/python-experimental/test/test_mixed_properties_and_additional_properties_class.py
new file mode 100644
index 00000000000..9f54921c695
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_mixed_properties_and_additional_properties_class.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.mixed_properties_and_additional_properties_class import MixedPropertiesAndAdditionalPropertiesClass
+
+
+class TestMixedPropertiesAndAdditionalPropertiesClass(unittest.TestCase):
+    """MixedPropertiesAndAdditionalPropertiesClass unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_MixedPropertiesAndAdditionalPropertiesClass(self):
+        """Test MixedPropertiesAndAdditionalPropertiesClass"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = MixedPropertiesAndAdditionalPropertiesClass()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_model200_response.py b/samples/openapi3/client/petstore/python-experimental/test/test_model200_response.py
new file mode 100644
index 00000000000..48f8ea5e01c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_model200_response.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.model200_response import Model200Response
+
+
+class TestModel200Response(unittest.TestCase):
+    """Model200Response unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Model200Response(self):
+        """Test Model200Response"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Model200Response()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_model_return.py b/samples/openapi3/client/petstore/python-experimental/test/test_model_return.py
new file mode 100644
index 00000000000..79b04d0931d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_model_return.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.model_return import ModelReturn
+
+
+class TestModelReturn(unittest.TestCase):
+    """ModelReturn unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ModelReturn(self):
+        """Test ModelReturn"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ModelReturn()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_money.py b/samples/openapi3/client/petstore/python-experimental/test/test_money.py
new file mode 100644
index 00000000000..2eb90df6644
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_money.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.money import Money
+
+
+class TestMoney(unittest.TestCase):
+    """Money unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Money(self):
+        """Test Money"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Money()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_name.py b/samples/openapi3/client/petstore/python-experimental/test/test_name.py
new file mode 100644
index 00000000000..ec115ac670e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_name.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.name import Name
+
+
+class TestName(unittest.TestCase):
+    """Name unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Name(self):
+        """Test Name"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Name()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_no_additional_properties.py b/samples/openapi3/client/petstore/python-experimental/test/test_no_additional_properties.py
new file mode 100644
index 00000000000..59ccb034d64
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_no_additional_properties.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.no_additional_properties import NoAdditionalProperties
+
+
+class TestNoAdditionalProperties(unittest.TestCase):
+    """NoAdditionalProperties unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_NoAdditionalProperties(self):
+        """Test NoAdditionalProperties"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = NoAdditionalProperties()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_nullable_class.py b/samples/openapi3/client/petstore/python-experimental/test/test_nullable_class.py
new file mode 100644
index 00000000000..5b4cfeb945b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_nullable_class.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.nullable_class import NullableClass
+
+
+class TestNullableClass(unittest.TestCase):
+    """NullableClass unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_NullableClass(self):
+        """Test NullableClass"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = NullableClass()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_nullable_shape.py b/samples/openapi3/client/petstore/python-experimental/test/test_nullable_shape.py
new file mode 100644
index 00000000000..697c8d66329
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_nullable_shape.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.nullable_shape import NullableShape
+
+
+class TestNullableShape(unittest.TestCase):
+    """NullableShape unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_NullableShape(self):
+        """Test NullableShape"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = NullableShape()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_nullable_string.py b/samples/openapi3/client/petstore/python-experimental/test/test_nullable_string.py
new file mode 100644
index 00000000000..38fcd7262bb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_nullable_string.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.nullable_string import NullableString
+
+
+class TestNullableString(unittest.TestCase):
+    """NullableString unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_NullableString(self):
+        """Test NullableString"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = NullableString()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_number.py b/samples/openapi3/client/petstore/python-experimental/test/test_number.py
new file mode 100644
index 00000000000..6f7f55b9402
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_number.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.number import Number
+
+
+class TestNumber(unittest.TestCase):
+    """Number unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Number(self):
+        """Test Number"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Number()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_number_only.py b/samples/openapi3/client/petstore/python-experimental/test/test_number_only.py
new file mode 100644
index 00000000000..69073964b8e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_number_only.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.number_only import NumberOnly
+
+
+class TestNumberOnly(unittest.TestCase):
+    """NumberOnly unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_NumberOnly(self):
+        """Test NumberOnly"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = NumberOnly()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_number_with_validations.py b/samples/openapi3/client/petstore/python-experimental/test/test_number_with_validations.py
new file mode 100644
index 00000000000..b7dbd3ba66d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_number_with_validations.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.number_with_validations import NumberWithValidations
+
+
+class TestNumberWithValidations(unittest.TestCase):
+    """NumberWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_NumberWithValidations(self):
+        """Test NumberWithValidations"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = NumberWithValidations()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_object_interface.py b/samples/openapi3/client/petstore/python-experimental/test/test_object_interface.py
new file mode 100644
index 00000000000..45cd46414d5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_object_interface.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.object_interface import ObjectInterface
+
+
+class TestObjectInterface(unittest.TestCase):
+    """ObjectInterface unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectInterface(self):
+        """Test ObjectInterface"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ObjectInterface()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_object_model_with_ref_props.py b/samples/openapi3/client/petstore/python-experimental/test/test_object_model_with_ref_props.py
new file mode 100644
index 00000000000..0a1045ece2a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_object_model_with_ref_props.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.object_model_with_ref_props import ObjectModelWithRefProps
+
+
+class TestObjectModelWithRefProps(unittest.TestCase):
+    """ObjectModelWithRefProps unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectModelWithRefProps(self):
+        """Test ObjectModelWithRefProps"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ObjectModelWithRefProps()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_object_with_decimal_properties.py b/samples/openapi3/client/petstore/python-experimental/test/test_object_with_decimal_properties.py
new file mode 100644
index 00000000000..f8c4ff1a6c9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_object_with_decimal_properties.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.object_with_decimal_properties import ObjectWithDecimalProperties
+
+
+class TestObjectWithDecimalProperties(unittest.TestCase):
+    """ObjectWithDecimalProperties unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectWithDecimalProperties(self):
+        """Test ObjectWithDecimalProperties"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ObjectWithDecimalProperties()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_object_with_difficultly_named_props.py b/samples/openapi3/client/petstore/python-experimental/test/test_object_with_difficultly_named_props.py
new file mode 100644
index 00000000000..c5959830948
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_object_with_difficultly_named_props.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.object_with_difficultly_named_props import ObjectWithDifficultlyNamedProps
+
+
+class TestObjectWithDifficultlyNamedProps(unittest.TestCase):
+    """ObjectWithDifficultlyNamedProps unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectWithDifficultlyNamedProps(self):
+        """Test ObjectWithDifficultlyNamedProps"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ObjectWithDifficultlyNamedProps()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_object_with_validations.py b/samples/openapi3/client/petstore/python-experimental/test/test_object_with_validations.py
new file mode 100644
index 00000000000..128755642ee
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_object_with_validations.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.object_with_validations import ObjectWithValidations
+
+
+class TestObjectWithValidations(unittest.TestCase):
+    """ObjectWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectWithValidations(self):
+        """Test ObjectWithValidations"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ObjectWithValidations()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_order.py b/samples/openapi3/client/petstore/python-experimental/test/test_order.py
new file mode 100644
index 00000000000..bfed83072ae
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_order.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.order import Order
+
+
+class TestOrder(unittest.TestCase):
+    """Order unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Order(self):
+        """Test Order"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Order()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_parent_pet.py b/samples/openapi3/client/petstore/python-experimental/test/test_parent_pet.py
new file mode 100644
index 00000000000..0c9d1876520
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_parent_pet.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.parent_pet import ParentPet
+
+
+class TestParentPet(unittest.TestCase):
+    """ParentPet unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ParentPet(self):
+        """Test ParentPet"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ParentPet()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_pet.py b/samples/openapi3/client/petstore/python-experimental/test/test_pet.py
new file mode 100644
index 00000000000..133ae47f409
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_pet.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.pet import Pet
+
+
+class TestPet(unittest.TestCase):
+    """Pet unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Pet(self):
+        """Test Pet"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Pet()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_pet_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_pet_api.py
new file mode 100644
index 00000000000..494be2ebd84
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_pet_api.py
@@ -0,0 +1,92 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.pet_api import PetApi  # noqa: E501
+
+
+class TestPetApi(unittest.TestCase):
+    """PetApi unit test stubs"""
+
+    def setUp(self):
+        self.api = PetApi()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_add_pet(self):
+        """Test case for add_pet
+
+        Add a new pet to the store  # noqa: E501
+        """
+        pass
+
+    def test_delete_pet(self):
+        """Test case for delete_pet
+
+        Deletes a pet  # noqa: E501
+        """
+        pass
+
+    def test_find_pets_by_status(self):
+        """Test case for find_pets_by_status
+
+        Finds Pets by status  # noqa: E501
+        """
+        pass
+
+    def test_find_pets_by_tags(self):
+        """Test case for find_pets_by_tags
+
+        Finds Pets by tags  # noqa: E501
+        """
+        pass
+
+    def test_get_pet_by_id(self):
+        """Test case for get_pet_by_id
+
+        Find pet by ID  # noqa: E501
+        """
+        pass
+
+    def test_update_pet(self):
+        """Test case for update_pet
+
+        Update an existing pet  # noqa: E501
+        """
+        pass
+
+    def test_update_pet_with_form(self):
+        """Test case for update_pet_with_form
+
+        Updates a pet in the store with form data  # noqa: E501
+        """
+        pass
+
+    def test_upload_file_with_required_file(self):
+        """Test case for upload_file_with_required_file
+
+        uploads an image (required)  # noqa: E501
+        """
+        pass
+
+    def test_upload_image(self):
+        """Test case for upload_image
+
+        uploads an image  # noqa: E501
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_pig.py b/samples/openapi3/client/petstore/python-experimental/test/test_pig.py
new file mode 100644
index 00000000000..547a45679b6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_pig.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.pig import Pig
+
+
+class TestPig(unittest.TestCase):
+    """Pig unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Pig(self):
+        """Test Pig"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Pig()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_player.py b/samples/openapi3/client/petstore/python-experimental/test/test_player.py
new file mode 100644
index 00000000000..b3d3d685d65
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_player.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.player import Player
+
+
+class TestPlayer(unittest.TestCase):
+    """Player unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Player(self):
+        """Test Player"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Player()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/test/test_quadrilateral.py
new file mode 100644
index 00000000000..f21755a58ee
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_quadrilateral.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.quadrilateral import Quadrilateral
+
+
+class TestQuadrilateral(unittest.TestCase):
+    """Quadrilateral unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Quadrilateral(self):
+        """Test Quadrilateral"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Quadrilateral()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_quadrilateral_interface.py b/samples/openapi3/client/petstore/python-experimental/test/test_quadrilateral_interface.py
new file mode 100644
index 00000000000..e1d318d0311
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_quadrilateral_interface.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.quadrilateral_interface import QuadrilateralInterface
+
+
+class TestQuadrilateralInterface(unittest.TestCase):
+    """QuadrilateralInterface unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_QuadrilateralInterface(self):
+        """Test QuadrilateralInterface"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = QuadrilateralInterface()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_read_only_first.py b/samples/openapi3/client/petstore/python-experimental/test/test_read_only_first.py
new file mode 100644
index 00000000000..ce3245015e5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_read_only_first.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.read_only_first import ReadOnlyFirst
+
+
+class TestReadOnlyFirst(unittest.TestCase):
+    """ReadOnlyFirst unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ReadOnlyFirst(self):
+        """Test ReadOnlyFirst"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ReadOnlyFirst()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_scalene_triangle.py b/samples/openapi3/client/petstore/python-experimental/test/test_scalene_triangle.py
new file mode 100644
index 00000000000..8e20abb6457
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_scalene_triangle.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.scalene_triangle import ScaleneTriangle
+
+
+class TestScaleneTriangle(unittest.TestCase):
+    """ScaleneTriangle unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ScaleneTriangle(self):
+        """Test ScaleneTriangle"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ScaleneTriangle()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_scalene_triangle_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_scalene_triangle_all_of.py
new file mode 100644
index 00000000000..8907e705a98
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_scalene_triangle_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.scalene_triangle_all_of import ScaleneTriangleAllOf
+
+
+class TestScaleneTriangleAllOf(unittest.TestCase):
+    """ScaleneTriangleAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ScaleneTriangleAllOf(self):
+        """Test ScaleneTriangleAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ScaleneTriangleAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_shape.py b/samples/openapi3/client/petstore/python-experimental/test/test_shape.py
new file mode 100644
index 00000000000..ac59550d539
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_shape.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.shape import Shape
+
+
+class TestShape(unittest.TestCase):
+    """Shape unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Shape(self):
+        """Test Shape"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Shape()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_shape_or_null.py b/samples/openapi3/client/petstore/python-experimental/test/test_shape_or_null.py
new file mode 100644
index 00000000000..e014a9f0b15
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_shape_or_null.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.shape_or_null import ShapeOrNull
+
+
+class TestShapeOrNull(unittest.TestCase):
+    """ShapeOrNull unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ShapeOrNull(self):
+        """Test ShapeOrNull"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ShapeOrNull()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_simple_quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/test/test_simple_quadrilateral.py
new file mode 100644
index 00000000000..a06f65e3f18
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_simple_quadrilateral.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.simple_quadrilateral import SimpleQuadrilateral
+
+
+class TestSimpleQuadrilateral(unittest.TestCase):
+    """SimpleQuadrilateral unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_SimpleQuadrilateral(self):
+        """Test SimpleQuadrilateral"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = SimpleQuadrilateral()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_simple_quadrilateral_all_of.py b/samples/openapi3/client/petstore/python-experimental/test/test_simple_quadrilateral_all_of.py
new file mode 100644
index 00000000000..af618a80517
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_simple_quadrilateral_all_of.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.simple_quadrilateral_all_of import SimpleQuadrilateralAllOf
+
+
+class TestSimpleQuadrilateralAllOf(unittest.TestCase):
+    """SimpleQuadrilateralAllOf unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_SimpleQuadrilateralAllOf(self):
+        """Test SimpleQuadrilateralAllOf"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = SimpleQuadrilateralAllOf()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_some_object.py b/samples/openapi3/client/petstore/python-experimental/test/test_some_object.py
new file mode 100644
index 00000000000..f1fe6af1581
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_some_object.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.some_object import SomeObject
+
+
+class TestSomeObject(unittest.TestCase):
+    """SomeObject unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_SomeObject(self):
+        """Test SomeObject"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = SomeObject()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_special_model_name.py b/samples/openapi3/client/petstore/python-experimental/test/test_special_model_name.py
new file mode 100644
index 00000000000..bfc1af2691c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_special_model_name.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.special_model_name import SpecialModelName
+
+
+class TestSpecialModelName(unittest.TestCase):
+    """SpecialModelName unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_SpecialModelName(self):
+        """Test SpecialModelName"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = SpecialModelName()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_store_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_store_api.py
new file mode 100644
index 00000000000..14918e6e47d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_store_api.py
@@ -0,0 +1,57 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.store_api import StoreApi  # noqa: E501
+
+
+class TestStoreApi(unittest.TestCase):
+    """StoreApi unit test stubs"""
+
+    def setUp(self):
+        self.api = StoreApi()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_delete_order(self):
+        """Test case for delete_order
+
+        Delete purchase order by ID  # noqa: E501
+        """
+        pass
+
+    def test_get_inventory(self):
+        """Test case for get_inventory
+
+        Returns pet inventories by status  # noqa: E501
+        """
+        pass
+
+    def test_get_order_by_id(self):
+        """Test case for get_order_by_id
+
+        Find purchase order by ID  # noqa: E501
+        """
+        pass
+
+    def test_place_order(self):
+        """Test case for place_order
+
+        Place an order for a pet  # noqa: E501
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_string.py b/samples/openapi3/client/petstore/python-experimental/test/test_string.py
new file mode 100644
index 00000000000..d3b7bff446e
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_string.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.string import String
+
+
+class TestString(unittest.TestCase):
+    """String unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_String(self):
+        """Test String"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = String()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_string_boolean_map.py b/samples/openapi3/client/petstore/python-experimental/test/test_string_boolean_map.py
new file mode 100644
index 00000000000..d211c69d25d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_string_boolean_map.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.string_boolean_map import StringBooleanMap
+
+
+class TestStringBooleanMap(unittest.TestCase):
+    """StringBooleanMap unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_StringBooleanMap(self):
+        """Test StringBooleanMap"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = StringBooleanMap()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_string_enum.py b/samples/openapi3/client/petstore/python-experimental/test/test_string_enum.py
new file mode 100644
index 00000000000..9e464a1404d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_string_enum.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.string_enum import StringEnum
+
+
+class TestStringEnum(unittest.TestCase):
+    """StringEnum unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_StringEnum(self):
+        """Test StringEnum"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = StringEnum()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_string_enum_with_default_value.py b/samples/openapi3/client/petstore/python-experimental/test/test_string_enum_with_default_value.py
new file mode 100644
index 00000000000..06aba4d7044
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_string_enum_with_default_value.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.string_enum_with_default_value import StringEnumWithDefaultValue
+
+
+class TestStringEnumWithDefaultValue(unittest.TestCase):
+    """StringEnumWithDefaultValue unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_StringEnumWithDefaultValue(self):
+        """Test StringEnumWithDefaultValue"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = StringEnumWithDefaultValue()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_string_with_validation.py b/samples/openapi3/client/petstore/python-experimental/test/test_string_with_validation.py
new file mode 100644
index 00000000000..df7fef9ecd2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_string_with_validation.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.string_with_validation import StringWithValidation
+
+
+class TestStringWithValidation(unittest.TestCase):
+    """StringWithValidation unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_StringWithValidation(self):
+        """Test StringWithValidation"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = StringWithValidation()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_tag.py b/samples/openapi3/client/petstore/python-experimental/test/test_tag.py
new file mode 100644
index 00000000000..3638a780a82
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_tag.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.tag import Tag
+
+
+class TestTag(unittest.TestCase):
+    """Tag unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Tag(self):
+        """Test Tag"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Tag()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_triangle.py b/samples/openapi3/client/petstore/python-experimental/test/test_triangle.py
new file mode 100644
index 00000000000..5c51dc41ae8
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_triangle.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.triangle import Triangle
+
+
+class TestTriangle(unittest.TestCase):
+    """Triangle unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Triangle(self):
+        """Test Triangle"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Triangle()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_triangle_interface.py b/samples/openapi3/client/petstore/python-experimental/test/test_triangle_interface.py
new file mode 100644
index 00000000000..fa7414066b2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_triangle_interface.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.triangle_interface import TriangleInterface
+
+
+class TestTriangleInterface(unittest.TestCase):
+    """TriangleInterface unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_TriangleInterface(self):
+        """Test TriangleInterface"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = TriangleInterface()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_user.py b/samples/openapi3/client/petstore/python-experimental/test/test_user.py
new file mode 100644
index 00000000000..24ef5a00970
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_user.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.user import User
+
+
+class TestUser(unittest.TestCase):
+    """User unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_User(self):
+        """Test User"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = User()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_user_api.py b/samples/openapi3/client/petstore/python-experimental/test/test_user_api.py
new file mode 100644
index 00000000000..3fa565f40fe
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_user_api.py
@@ -0,0 +1,85 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.api.user_api import UserApi  # noqa: E501
+
+
+class TestUserApi(unittest.TestCase):
+    """UserApi unit test stubs"""
+
+    def setUp(self):
+        self.api = UserApi()  # noqa: E501
+
+    def tearDown(self):
+        pass
+
+    def test_create_user(self):
+        """Test case for create_user
+
+        Create user  # noqa: E501
+        """
+        pass
+
+    def test_create_users_with_array_input(self):
+        """Test case for create_users_with_array_input
+
+        Creates list of users with given input array  # noqa: E501
+        """
+        pass
+
+    def test_create_users_with_list_input(self):
+        """Test case for create_users_with_list_input
+
+        Creates list of users with given input array  # noqa: E501
+        """
+        pass
+
+    def test_delete_user(self):
+        """Test case for delete_user
+
+        Delete user  # noqa: E501
+        """
+        pass
+
+    def test_get_user_by_name(self):
+        """Test case for get_user_by_name
+
+        Get user by user name  # noqa: E501
+        """
+        pass
+
+    def test_login_user(self):
+        """Test case for login_user
+
+        Logs user into the system  # noqa: E501
+        """
+        pass
+
+    def test_logout_user(self):
+        """Test case for logout_user
+
+        Logs out current logged in user session  # noqa: E501
+        """
+        pass
+
+    def test_update_user(self):
+        """Test case for update_user
+
+        Updated user  # noqa: E501
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_whale.py b/samples/openapi3/client/petstore/python-experimental/test/test_whale.py
new file mode 100644
index 00000000000..e19eb56a55c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_whale.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.whale import Whale
+
+
+class TestWhale(unittest.TestCase):
+    """Whale unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Whale(self):
+        """Test Whale"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Whale()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test/test_zebra.py b/samples/openapi3/client/petstore/python-experimental/test/test_zebra.py
new file mode 100644
index 00000000000..003ad25d878
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test/test_zebra.py
@@ -0,0 +1,35 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+
+import petstore_api
+from petstore_api.model.zebra import Zebra
+
+
+class TestZebra(unittest.TestCase):
+    """Zebra unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Zebra(self):
+        """Test Zebra"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = Zebra()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/test_python.sh b/samples/openapi3/client/petstore/python-experimental/test_python.sh
new file mode 100755
index 00000000000..9728a9b5316
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/test_python.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+REQUIREMENTS_FILE=dev-requirements.txt
+REQUIREMENTS_OUT=dev-requirements.txt.log
+SETUP_OUT=*.egg-info
+VENV=venv
+DEACTIVE=false
+
+export LC_ALL=en_US.UTF-8
+export LANG=en_US.UTF-8
+
+### set virtualenv
+if [ -z "$VENVV" ]; then
+		python3 -m venv $VENV
+		source $VENV/bin/activate
+    DEACTIVE=true
+fi
+
+### install dependencies
+pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
+### locally install the package, needed for pycharm problem checking
+pip install -e .
+
+### run tests
+tox || exit 1
+
+### static analysis of code
+#flake8 --show-source petstore_api/
+
+### deactivate virtualenv
+#if [ $DEACTIVE == true ]; then
+#    deactivate
+#fi
diff --git a/samples/openapi3/client/petstore/python-experimental/testfiles/1px_pic1.png b/samples/openapi3/client/petstore/python-experimental/testfiles/1px_pic1.png
new file mode 100644
index 00000000000..7d3a386a210
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diff --git a/samples/openapi3/client/petstore/python-experimental/testfiles/1px_pic2.png b/samples/openapi3/client/petstore/python-experimental/testfiles/1px_pic2.png
new file mode 100644
index 00000000000..7d3a386a210
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diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/__init__.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_animal.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_animal.py
new file mode 100644
index 00000000000..e3443becb14
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_animal.py
@@ -0,0 +1,97 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.cat import Cat
+from petstore_api.model.cat_all_of import CatAllOf
+from petstore_api.model.dog import Dog
+from petstore_api.model.dog_all_of import DogAllOf
+from petstore_api.model.animal import Animal
+from petstore_api.schemas import StrSchema, BoolSchema, frozendict
+
+
+class TestAnimal(unittest.TestCase):
+    """Animal unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testAnimal(self):
+        """Test Animal"""
+
+        regex_err = (
+            r"Invalid discriminator value was passed in to Animal.className "
+            r"Only the values \['Cat', 'Dog'\] are allowed at \('args\[0\]', 'className'\)"
+        )
+        with self.assertRaisesRegex(petstore_api.ApiValueError, regex_err):
+            Animal(className='Fox', color='red')
+
+        animal = Animal(className='Cat', color='black')
+        assert isinstance(animal, Animal)
+        assert isinstance(animal, frozendict)
+        assert isinstance(animal, Cat)
+        assert isinstance(animal, CatAllOf)
+        assert set(animal.keys()) == {'className', 'color'}
+        assert animal.className == 'Cat'
+        assert animal.color == 'black'
+        assert animal.__class__.color is StrSchema
+        assert animal.__class__.className is StrSchema
+
+        # pass in optional param
+        animal = Animal(className='Cat', color='black', declawed=True)
+        assert isinstance(animal, Animal)
+        assert isinstance(animal, frozendict)
+        assert isinstance(animal, Cat)
+        assert isinstance(animal, CatAllOf)
+        assert set(animal.keys()) == {'className', 'color', 'declawed'}
+        assert animal.className == 'Cat'
+        assert animal.color == 'black'
+        assert bool(animal.declawed) is True
+        assert animal.__class__.color is StrSchema
+        assert animal.__class__.className is StrSchema
+        assert animal.__class__.declawed is BoolSchema
+
+        # make a Dog
+        animal = Animal(className='Dog', color='black')
+        assert isinstance(animal, Animal)
+        assert isinstance(animal, frozendict)
+        assert isinstance(animal, Dog)
+        assert isinstance(animal, DogAllOf)
+        assert set(animal.keys()) == {'className', 'color'}
+        assert animal.className == 'Dog'
+        assert animal.color == 'black'
+        assert animal.__class__.color is StrSchema
+        assert animal.__class__.className is StrSchema
+
+        # pass in optional param
+        animal = Animal(className='Dog', color='black', breed='Labrador')
+        assert isinstance(animal, Animal)
+        assert isinstance(animal, frozendict)
+        assert isinstance(animal, Dog)
+        assert isinstance(animal, DogAllOf)
+        assert set(animal.keys()) == {'className', 'color', 'breed'}
+        assert animal.className == 'Dog'
+        assert animal.color == 'black'
+        assert animal.breed == 'Labrador'
+        assert animal.__class__.color is StrSchema
+        assert animal.__class__.className is StrSchema
+        assert animal.__class__.breed is StrSchema
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_any_type_schema.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_any_type_schema.py
new file mode 100644
index 00000000000..059c5eaac60
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_any_type_schema.py
@@ -0,0 +1,299 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import unittest
+from decimal import Decimal
+
+import petstore_api
+from petstore_api.schemas import (
+    AnyTypeSchema,
+    DictSchema,
+    ListSchema,
+    StrSchema,
+    NumberSchema,
+    IntSchema,
+    BoolSchema,
+    NoneSchema,
+    DateSchema,
+    DateTimeSchema,
+    DecimalSchema,
+    ComposedSchema,
+    frozendict,
+    NoneClass,
+    BoolClass
+)
+
+
+class TestAnyTypeSchema(unittest.TestCase):
+
+    def testDictSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        DictSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model(a=1, b='hi')
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, DictSchema)
+        assert isinstance(m, frozendict)
+        assert m == frozendict(a=Decimal(1), b='hi')
+
+    def testListSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        ListSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model([1, 'hi'])
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, ListSchema)
+        assert isinstance(m, tuple)
+        assert m == tuple([Decimal(1), 'hi'])
+
+    def testStrSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        StrSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model('hi')
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, StrSchema)
+        assert isinstance(m, str)
+        assert m == 'hi'
+
+    def testNumberSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        NumberSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model(1)
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, NumberSchema)
+        assert isinstance(m, Decimal)
+        assert m == Decimal(1)
+
+        m = Model(3.14)
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, NumberSchema)
+        assert isinstance(m, Decimal)
+        assert m == Decimal(3.14)
+
+    def testIntSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        IntSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model(1)
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, IntSchema)
+        assert isinstance(m, Decimal)
+        assert m == Decimal(1)
+
+        with self.assertRaises(petstore_api.exceptions.ApiValueError):
+            # can't pass in float into Int
+            m = Model(3.14)
+
+    def testBoolSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        BoolSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model(True)
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, BoolSchema)
+        assert isinstance(m, BoolClass)
+        self.assertTrue(m)
+
+        m = Model(False)
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, BoolSchema)
+        assert isinstance(m, BoolClass)
+        self.assertFalse(m)
+
+    def testNoneSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        NoneSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model(None)
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, NoneSchema)
+        assert isinstance(m, NoneClass)
+        self.assertTrue(m.is_none())
+
+    def testDateSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        DateSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model('1970-01-01')
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, DateSchema)
+        assert isinstance(m, str)
+        assert m == '1970-01-01'
+
+    def testDateTimeSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        DateTimeSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model('2020-01-01T00:00:00')
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, DateTimeSchema)
+        assert isinstance(m, str)
+        assert m == '2020-01-01T00:00:00'
+
+    def testDecimalSchema(self):
+        class Model(ComposedSchema):
+
+            @classmethod
+            @property
+            def _composed_schemas(cls):
+                return {
+                    'allOf': [
+                        AnyTypeSchema,
+                        DecimalSchema,
+                    ],
+                    'oneOf': [
+                    ],
+                    'anyOf': [
+                    ],
+                }
+
+        m = Model('12.34')
+        assert isinstance(m, Model)
+        assert isinstance(m, AnyTypeSchema)
+        assert isinstance(m, DecimalSchema)
+        assert isinstance(m, str)
+        assert m == '12.34'
+        assert m.as_decimal == Decimal('12.34')
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_array_holding_any_type.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_array_holding_any_type.py
new file mode 100644
index 00000000000..6addb31d8fc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_array_holding_any_type.py
@@ -0,0 +1,64 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+from datetime import date, datetime, timezone
+
+import petstore_api
+from petstore_api.model.array_holding_any_type import ArrayHoldingAnyType
+from petstore_api.schemas import NoneClass, BoolClass
+
+
+class TestArrayHoldingAnyType(unittest.TestCase):
+    """ArrayHoldingAnyType unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testArrayHoldingAnyType(self):
+        """Test ArrayHoldingAnyType"""
+
+        enum_values = [True, False]
+        for enum_value in enum_values:
+            inst = ArrayHoldingAnyType([enum_value])
+            assert isinstance(inst, ArrayHoldingAnyType)
+            assert isinstance(inst, tuple)
+            assert isinstance(inst[0], BoolClass)
+            assert bool(inst[0]) is enum_value
+
+        inst = ArrayHoldingAnyType([None])
+        assert isinstance(inst, ArrayHoldingAnyType)
+        assert isinstance(inst, tuple)
+        assert isinstance(inst[0], NoneClass)
+
+        input_to_stored_value = [
+            (0, 0),
+            (3.14, 3.14),
+            (date(1970, 1, 1), '1970-01-01'),
+            (datetime(1970, 1, 1, 0, 0, 0), '1970-01-01T00:00:00'),
+            (datetime(1970, 1, 1, 0, 0, 0, tzinfo=timezone.utc), '1970-01-01T00:00:00+00:00'),
+            ([], ()),
+            ({}, {}),
+            ('hi', 'hi'),
+        ]
+        for input, stored_value in input_to_stored_value:
+            inst = ArrayHoldingAnyType([input])
+            assert isinstance(inst, ArrayHoldingAnyType)
+            assert isinstance(inst, tuple)
+            assert inst[0] == stored_value
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_array_with_validations_in_items.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_array_with_validations_in_items.py
new file mode 100644
index 00000000000..1d3eccb68ed
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_array_with_validations_in_items.py
@@ -0,0 +1,52 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.array_with_validations_in_items import ArrayWithValidationsInItems
+
+
+class TestArrayWithValidationsInItems(unittest.TestCase):
+    """ArrayWithValidationsInItems unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testArrayWithValidationsInItems(self):
+        """Test ArrayWithValidationsInItems"""
+
+        valid_values = [-1, 5, 7]
+        for valid_value in valid_values:
+            inst = ArrayWithValidationsInItems([valid_value])
+            assert isinstance(inst, ArrayWithValidationsInItems)
+            assert inst == (valid_value,)
+
+        with self.assertRaisesRegex(
+            petstore_api.exceptions.ApiValueError,
+            r"Invalid value `8`, must be a value less than or equal to `7` at \('args\[0\]', 0\)"
+        ):
+            ArrayWithValidationsInItems([8])
+
+        with self.assertRaisesRegex(
+            petstore_api.exceptions.ApiValueError,
+            r"Invalid value `\(Decimal\('1'\), Decimal\('2'\), Decimal\('3'\)\)`, number of items must be less than or equal to `2` at \('args\[0\]',\)"
+        ):
+            ArrayWithValidationsInItems([1, 2, 3])
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_boolean_enum.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_boolean_enum.py
new file mode 100644
index 00000000000..b2080043ce2
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_boolean_enum.py
@@ -0,0 +1,39 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.boolean_enum import BooleanEnum
+
+
+class TestBooleanEnum(unittest.TestCase):
+    """BooleanEnum unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_BooleanEnum(self):
+        """Test BooleanEnum"""
+        # FIXME: construct object with mandatory attributes with example values
+        model = BooleanEnum(True)
+        model is BooleanEnum.TRUE
+        with self.assertRaises(petstore_api.ApiValueError):
+            BooleanEnum(False)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_combine_object_schemas.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_combine_object_schemas.py
new file mode 100644
index 00000000000..cdbd7b1747c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_combine_object_schemas.py
@@ -0,0 +1,152 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.schemas import AnyTypeSchema, DictSchema, IntSchema, StrSchema, Float32Schema, DateSchema
+from petstore_api.model.danish_pig import DanishPig
+from petstore_api.model.basque_pig import BasquePig
+from petstore_api.model.no_additional_properties import NoAdditionalProperties
+from petstore_api.model.address import Address
+from petstore_api.model.apple_req import AppleReq
+from petstore_api.model.banana_req import BananaReq
+from petstore_api.model.player import Player
+
+class TestCombineObjectSchemas(unittest.TestCase):
+    pass
+#     def test_invalid_combo_additional_properties_missing(self):
+#         regex_err = (
+#             r"Cannot combine additionalProperties schemas from.+?DanishPig.+?and.+?NoAdditionalProperties.+?"
+#             r"in.+?Combo.+?because additionalProperties does not exist in both schemas"
+#         )
+#         with self.assertRaisesRegex(petstore_api.ApiTypeError, regex_err):
+#             class Combo(DanishPig, NoAdditionalProperties):
+#                 pass
+#
+#     def test_invalid_combo_both_no_addprops(self):
+#         regex_err = (
+#             r"Cannot combine schemas from.+?AppleReq.+?and.+?BananaReq.+?"
+#             r"in.+?Combo.+?because cultivar is missing from.+?BananaReq.+?"
+#         )
+#         with self.assertRaisesRegex(petstore_api.ApiTypeError, regex_err):
+#             class Combo(AppleReq, BananaReq):
+#                 pass
+#
+#     def test_valid_no_addprops(self):
+#         class FirstSchema(DictSchema):
+#
+#
+#             class a(IntSchema):
+#                 _validations = {
+#                     'inclusive_maximum': 20,
+#                 }
+#
+#             b = Float32Schema
+#
+#             _additional_properties = None
+#
+#         class SecondSchema(DictSchema):
+#
+#
+#             class a(IntSchema):
+#                 _validations = {
+#                     'inclusive_minimum': 10,
+#                 }
+#
+#             b = Float32Schema
+#
+#             _additional_properties = None
+#
+#         class Combo(FirstSchema, SecondSchema):
+#             pass
+#
+#         assert Combo._additional_properties is None
+#         self.assertEqual(Combo._property_names, ('a', 'b'))
+#         assert Combo.a._validations == {
+#             'inclusive_maximum': 20,
+#             'inclusive_minimum': 10,
+#         }
+#         assert Combo.b is Float32Schema
+#
+#
+#     def test_valid_combo_additional_properties_anytype_prim(self):
+#         class TwoPropsAndIntegerAddProp(DictSchema):
+#             a = StrSchema
+#             b = Float32Schema
+#             _additional_properties = IntSchema
+#
+#         class OnePropAndAnyTypeAddProps(DictSchema):
+#             c = IntSchema
+#             _additional_properties = AnyTypeSchema
+#
+#         class Combo(TwoPropsAndIntegerAddProp, OnePropAndAnyTypeAddProps):
+#             pass
+#
+#         assert Combo._additional_properties is TwoPropsAndIntegerAddProp._additional_properties
+#         self.assertEqual(Combo._property_names, ('a', 'b', 'c'))
+#         assert Combo.a is TwoPropsAndIntegerAddProp.a
+#         assert Combo.b is TwoPropsAndIntegerAddProp.b
+#         assert Combo.c is OnePropAndAnyTypeAddProps.c
+#
+#     def test_invalid_type_disagreement(self):
+#         class StrSchemaA(DictSchema):
+#             a = StrSchema
+#             _additional_properties = AnyTypeSchema
+#
+#         class FloatSchemaA(DictSchema):
+#             a = Float32Schema
+#             _additional_properties = AnyTypeSchema
+#
+#         regex_err = (
+#             r"Cannot combine schemas.+?StrSchema.+?and.+?Float32Schema.+?"
+#             r"in.+?a.+?because their types do not intersect"
+#         )
+#         with self.assertRaisesRegex(petstore_api.ApiTypeError, regex_err):
+#             class Combo(StrSchemaA, FloatSchemaA):
+#                 pass
+#
+#     def test_valid_combo_including_self_reference(self):
+#
+#         class EnemyPlayerAndA(DictSchema):
+#             a = DateSchema
+#
+#             class enemyPlayer(DictSchema):
+#                 heightCm = IntSchema
+#                 _additional_properties = AnyTypeSchema
+#
+#             _additional_properties = AnyTypeSchema
+#
+#         class Combo(Player, EnemyPlayerAndA):
+#             # we have a self reference where Player.enemyPlayer = Player
+#             pass
+#
+#         """
+#         For Combo
+#         name is from Player
+#         enemyPlayer is from Player + EnemyPlayerAndA
+#         a is from EnemyPlayerAndA
+#         """
+#         self.assertEqual(Combo._property_names, ('a', 'enemyPlayer', 'name'))
+#         self.assertEqual(Combo.enemyPlayer.__bases__, (EnemyPlayerAndA.enemyPlayer, Player))
+#         """
+#         For Combo.enemyPlayer
+#         heightCm is from EnemyPlayerAndA.enemyPlayer
+#         name is from Player.enemyPlayer
+#         enemyPlayer is from Player.enemyPlayer
+#         """
+#         self.assertEqual(Combo.enemyPlayer._property_names, ('enemyPlayer', 'heightCm', 'name'))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_combine_schemas.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_combine_schemas.py
new file mode 100644
index 00000000000..c6d353f66c9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_combine_schemas.py
@@ -0,0 +1,104 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.date_with_validations import DateWithValidations
+from petstore_api.model.date_time_with_validations import DateTimeWithValidations
+from petstore_api.model.string_with_validation import StringWithValidation
+from petstore_api.model.integer_enum_one_value import IntegerEnumOneValue
+from petstore_api.model.integer_enum import IntegerEnum
+from petstore_api.model.integer_enum_big import IntegerEnumBig
+from petstore_api.model.integer_max10 import IntegerMax10
+from petstore_api.model.integer_min15 import IntegerMin15
+from petstore_api.model.nullable_string import NullableString
+from petstore_api.schemas import AnyTypeSchema, Schema, NoneSchema, StrSchema, none_type, Singleton
+
+
+class TestCombineNonObjectSchemas(unittest.TestCase):
+
+    def test_valid_enum_plus_prim(self):
+        class EnumPlusPrim(IntegerMax10, IntegerEnumOneValue):
+            pass
+
+        assert EnumPlusPrim._enum_value_to_name == {0: "POSITIVE_0"}
+
+        # order of base classes does not matter
+        class EnumPlusPrim(IntegerEnumOneValue, IntegerMax10):
+            pass
+
+        assert EnumPlusPrim._enum_value_to_name == {0: "POSITIVE_0"}
+
+        # _enum_value_to_name only contains one key
+        assert set(EnumPlusPrim._enum_value_to_name) == {0}
+        # the value is the expected enum class
+        enum_value_cls = EnumPlusPrim._enum_by_value[0]
+        assert issubclass(enum_value_cls, EnumPlusPrim)
+        assert issubclass(enum_value_cls, Singleton)
+        assert issubclass(enum_value_cls, int)
+        # the enum stored in that class is expected
+        enum_value = enum_value_cls.POSITIVE_0
+        assert isinstance(enum_value, EnumPlusPrim)
+        assert isinstance(enum_value, Singleton)
+        assert isinstance(enum_value, int)
+        # we can access this enum from our class
+        assert EnumPlusPrim.POSITIVE_0 == enum_value
+
+        # invalid value throws an exception
+        with self.assertRaises(petstore_api.ApiValueError):
+            EnumPlusPrim(9)
+
+        # valid value succeeds
+        val = EnumPlusPrim(0)
+        assert val == 0
+        assert isinstance(val, EnumPlusPrim)
+        assert isinstance(val, Singleton)
+        assert isinstance(val, int)
+
+    def test_valid_enum_plus_enum(self):
+        class IntegerOneEnum(IntegerEnum, IntegerEnumOneValue):
+            pass
+
+        assert IntegerOneEnum._enum_value_to_name == {0: "POSITIVE_0"}
+
+        # order of base classes does not matter
+        class IntegerOneEnum(IntegerEnumOneValue, IntegerEnum):
+            pass
+
+        assert IntegerOneEnum._enum_value_to_name == {0: "POSITIVE_0"}
+
+        # _enum_by_value only contains one key
+        assert set(IntegerOneEnum._enum_by_value) == {0}
+        # the value is the expected enum class
+        enum_value_cls = IntegerOneEnum._enum_by_value[0]
+        assert issubclass(enum_value_cls, IntegerOneEnum)
+        assert issubclass(enum_value_cls, Singleton)
+        assert issubclass(enum_value_cls, int)
+        # the enum stored in that class is expected
+        enum_value = enum_value_cls.POSITIVE_0
+        assert isinstance(enum_value, IntegerOneEnum)
+        assert isinstance(enum_value, Singleton)
+        assert isinstance(enum_value, int)
+        # we can access this enum from our class
+        assert IntegerOneEnum.POSITIVE_0 == enum_value
+
+        # accessing invalid enum throws an exception
+        invalid_enums = ['POSITIVE_1', 'POSITIVE_2']
+        for invalid_enum in invalid_enums:
+            with self.assertRaises(KeyError):
+                getattr(IntegerOneEnum, invalid_enum)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_bool.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_bool.py
new file mode 100644
index 00000000000..7f0b29ee909
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_bool.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_bool import ComposedBool
+
+
+class TestComposedBool(unittest.TestCase):
+    """ComposedBool unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedBool(self):
+        """Test ComposedBool"""
+        valid_values = [True, False]
+        all_values = [None, True, False, 2, 3.14, '', {}, []]
+        for value in all_values:
+            if value not in valid_values:
+                with self.assertRaises(petstore_api.ApiTypeError):
+                    model = ComposedBool(value)
+                continue
+            model = ComposedBool(value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_none.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_none.py
new file mode 100644
index 00000000000..a37eb26b104
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_none.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_none import ComposedNone
+
+
+class TestComposedNone(unittest.TestCase):
+    """ComposedNone unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedNone(self):
+        """Test ComposedNone"""
+        valid_values = [None]
+        all_values = [None, True, False, 2, 3.14, '', {}, []]
+        for value in all_values:
+            if value not in valid_values:
+                with self.assertRaises(petstore_api.ApiTypeError):
+                    model = ComposedNone(value)
+                continue
+            model = ComposedNone(value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_number.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_number.py
new file mode 100644
index 00000000000..1cd982e3f33
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_number.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_number import ComposedNumber
+
+
+class TestComposedNumber(unittest.TestCase):
+    """ComposedNumber unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedNumber(self):
+        """Test ComposedNumber"""
+        valid_values = [2, 3.14]
+        all_values = [None, True, False, 2, 3.14, '', {}, []]
+        for value in all_values:
+            if value not in valid_values:
+                with self.assertRaises(petstore_api.ApiTypeError):
+                    model = ComposedNumber(value)
+                continue
+            model = ComposedNumber(value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_object.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_object.py
new file mode 100644
index 00000000000..7c79c574d9b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_object.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_object import ComposedObject
+
+
+class TestComposedObject(unittest.TestCase):
+    """ComposedObject unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedObject(self):
+        """Test ComposedObject"""
+        valid_values = [{}]
+        all_values = [None, True, False, 2, 3.14, '', {}, []]
+        for value in all_values:
+            if value not in valid_values:
+                with self.assertRaises(petstore_api.ApiTypeError):
+                    model = ComposedObject(value)
+                continue
+            model = ComposedObject(value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_one_of_different_types.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_one_of_different_types.py
new file mode 100644
index 00000000000..f08dd500b1d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_one_of_different_types.py
@@ -0,0 +1,107 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+from datetime import date, datetime, timezone
+from dateutil.tz import tzutc
+
+import petstore_api
+from petstore_api.schemas import DateSchema, DateTimeSchema, Singleton, NoneClass, frozendict
+from petstore_api.model.animal import Animal
+from petstore_api.model.cat import Cat
+from petstore_api.model.composed_one_of_different_types import ComposedOneOfDifferentTypes
+from petstore_api.model.number_with_validations import NumberWithValidations
+
+class TestComposedOneOfDifferentTypes(unittest.TestCase):
+    """ComposedOneOfDifferentTypes unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedOneOfDifferentTypes(self):
+        """Test ComposedOneOfDifferentTypes"""
+        # we can make an instance that stores float data
+        inst = ComposedOneOfDifferentTypes(10.0)
+        assert isinstance(inst, NumberWithValidations)
+
+        # we can make an instance that stores object (dict) data
+        inst = ComposedOneOfDifferentTypes(className="Cat", color="black")
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert isinstance(inst, Animal)
+        assert isinstance(inst, Cat)
+        assert isinstance(inst, frozendict)
+
+        # object that holds 4 properties and is not an Animal
+        inst = ComposedOneOfDifferentTypes(a="a", b="b", c="c", d="d")
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert not isinstance(inst, Animal)
+        assert isinstance(inst, frozendict)
+
+        # None
+        inst = ComposedOneOfDifferentTypes(None)
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert isinstance(inst, Singleton)
+        assert isinstance(inst, NoneClass)
+        assert inst.is_none() is True
+
+        # date
+        inst = ComposedOneOfDifferentTypes._from_openapi_data('2019-01-10')
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert isinstance(inst, DateSchema)
+        assert isinstance(inst, str)
+        assert inst.as_date.year == 2019
+        assert inst.as_date.month == 1
+        assert inst.as_date.day == 10
+
+        # date
+        inst = ComposedOneOfDifferentTypes(date(2019, 1, 10))
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert isinstance(inst, DateSchema)
+        assert isinstance(inst, str)
+        assert inst.as_date.year == 2019
+        assert inst.as_date.month == 1
+        assert inst.as_date.day == 10
+
+        # date-time
+        inst = ComposedOneOfDifferentTypes._from_openapi_data('2020-01-02T03:04:05Z')
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert isinstance(inst, DateTimeSchema)
+        assert isinstance(inst, str)
+        assert inst.as_datetime.year == 2020
+        assert inst.as_datetime.month == 1
+        assert inst.as_datetime.day == 2
+        assert inst.as_datetime.hour == 3
+        assert inst.as_datetime.minute == 4
+        assert inst.as_datetime.second == 5
+        utc_tz = tzutc()
+        assert inst.as_datetime.tzinfo == utc_tz
+
+        # date-time
+        inst = ComposedOneOfDifferentTypes(datetime(2020, 1, 2, 3, 4, 5, tzinfo=timezone.utc))
+        assert isinstance(inst, ComposedOneOfDifferentTypes)
+        assert isinstance(inst, DateTimeSchema)
+        assert isinstance(inst, str)
+        assert inst.as_datetime.year == 2020
+        assert inst.as_datetime.month == 1
+        assert inst.as_datetime.day == 2
+        assert inst.as_datetime.hour == 3
+        assert inst.as_datetime.minute == 4
+        assert inst.as_datetime.second == 5
+        assert inst.as_datetime.tzinfo == utc_tz
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_string.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_string.py
new file mode 100644
index 00000000000..aeb5ea3a972
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_composed_string.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.composed_string import ComposedString
+
+
+class TestComposedString(unittest.TestCase):
+    """ComposedString unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ComposedString(self):
+        """Test ComposedString"""
+        valid_values = ['']
+        all_values = [None, True, False, 2, 3.14, '', {}, []]
+        for value in all_values:
+            if value not in valid_values:
+                with self.assertRaises(petstore_api.ApiTypeError):
+                    model = ComposedString(value)
+                continue
+            model = ComposedString(value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_configuration.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_configuration.py
new file mode 100644
index 00000000000..9218e4fc255
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_configuration.py
@@ -0,0 +1,69 @@
+# coding: utf-8
+
+# flake8: noqa
+
+"""
+Run the tests.
+$ pip install nose (optional)
+$ cd OpenAPIetstore-python
+$ nosetests -v
+"""
+
+import unittest
+
+from unittest.mock import patch
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+import petstore_api
+from petstore_api.api_client import ApiClient
+from petstore_api.api import pet_api
+
+
+class ConfigurationTests(unittest.TestCase):
+
+    def test_configuration(self):
+        config = petstore_api.Configuration()
+        config.host = 'http://localhost/'
+
+        config.disabled_client_side_validations = ("multipleOf,maximum,exclusiveMaximum,minimum,exclusiveMinimum,"
+            "maxLength,minLength,pattern,maxItems,minItems")
+        with self.assertRaisesRegex(ValueError, "Invalid keyword: 'foo'"):
+            config.disabled_client_side_validations = 'foo'
+        config.disabled_client_side_validations = ""
+
+    def test_servers(self):
+        config = petstore_api.Configuration(server_index=1, server_variables={'version': 'v1'})
+        client = pet_api.ApiClient(configuration=config)
+        api = pet_api.PetApi(client)
+
+        with patch.object(ApiClient, 'request') as mock_request:
+            mock_request.return_value = urllib3.HTTPResponse(status=200)
+            api.add_pet({'name': 'pet', 'photoUrls': []})
+            mock_request.assert_called_with(
+                'POST',
+                'http://path-server-test.petstore.local/v2/pet',
+                query_params=None,
+                headers=HTTPHeaderDict({
+                    'Content-Type': 'application/json',
+                    'User-Agent': 'OpenAPI-Generator/1.0.0/python'
+                }),
+                fields=None,
+                body=b'{"name":"pet","photoUrls":[]}',
+                stream=False,
+                timeout=None,
+            )
+
+        with patch.object(ApiClient, 'request') as mock_request:
+            mock_request.return_value = urllib3.HTTPResponse(status=200)
+            api.delete_pet(path_params=dict(petId=123456789))
+            mock_request.assert_called_with(
+                'DELETE',
+                'https://localhost:8080/v1/pet/123456789',
+                query_params=None,
+                headers={'User-Agent': 'OpenAPI-Generator/1.0.0/python'},
+                fields=None,
+                body=None,
+                stream=False,
+                timeout=None,
+            )
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_date_time_with_validations.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_date_time_with_validations.py
new file mode 100644
index 00000000000..3d26e42bc1d
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_date_time_with_validations.py
@@ -0,0 +1,87 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import unittest
+
+import petstore_api
+from petstore_api.model.date_time_with_validations import DateTimeWithValidations
+from datetime import date, datetime, timezone
+
+
+class TestDateTimeWithValidations(unittest.TestCase):
+    """DateTimeWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testDateTimeWithValidations(self):
+        """Test DateTimeWithValidations"""
+
+        # works with datetime input
+        valid_values = [datetime(2020, 1, 1), '2020-01-01T00:00:00']
+        expected_datetime = '2020-01-01T00:00:00'
+        for valid_value in valid_values:
+            inst = DateTimeWithValidations(valid_value)
+            assert inst == expected_datetime
+
+        # when passing data in with _from_openapi_data one must use str
+        with self.assertRaisesRegex(
+            petstore_api.ApiTypeError,
+            r"Invalid type. Required value type is str and passed type was datetime at \['args\[0\]'\]"
+        ):
+            DateTimeWithValidations._from_openapi_data(datetime(2020, 1, 1))
+
+        # when passing data _from_openapi_data we can use str
+        input_value_to_datetime = {
+            "2020-01-01T00:00:00": datetime(2020, 1, 1, tzinfo=None),
+            "2020-01-01T00:00:00Z": datetime(2020, 1, 1, tzinfo=timezone.utc),
+            "2020-01-01T00:00:00+00:00": datetime(2020, 1, 1, tzinfo=timezone.utc)
+        }
+        for input_value, expected_datetime in input_value_to_datetime.items():
+            inst = DateTimeWithValidations._from_openapi_data(input_value)
+            assert inst.as_datetime == expected_datetime
+
+        # value error is raised if an invalid string is passed in
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Value does not conform to the required ISO-8601 datetime format. Invalid value 'abcd' for type datetime at \('args\[0\]',\)"
+        ):
+            DateTimeWithValidations._from_openapi_data("abcd")
+
+        # value error is raised if a date is passed in
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Value does not conform to the required ISO-8601 datetime format. Invalid value '2020-01-01' for type datetime at \('args\[0\]',\)"
+        ):
+            DateTimeWithValidations(date(2020, 1, 1))
+
+        # pattern checking with string input
+        error_regex = r"Invalid value `2019-01-01T00:00:00Z`, must match regular expression `.+?` at \('args\[0\]',\)"
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            error_regex
+        ):
+            DateTimeWithValidations._from_openapi_data("2019-01-01T00:00:00Z")
+        # pattern checking with date input
+        error_regex = r"Invalid value `2019-01-01T00:00:00`, must match regular expression `.+?` at \('args\[0\]',\)"
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            error_regex
+        ):
+            DateTimeWithValidations(datetime(2019, 1, 1))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_date_with_validations.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_date_with_validations.py
new file mode 100644
index 00000000000..fff79f16cfc
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_date_with_validations.py
@@ -0,0 +1,90 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import unittest
+
+import petstore_api
+from petstore_api.model.date_with_validations import DateWithValidations
+from datetime import date, datetime
+
+
+class TestDateWithValidations(unittest.TestCase):
+    """DateWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testDateWithValidations(self):
+        """Test DateWithValidations"""
+
+        # client side date inputs
+        valid_values = [date(2020, 1, 1), '2020-01-01']
+        expected_date = '2020-01-01'
+        for valid_value in valid_values:
+            inst = DateWithValidations(valid_value)
+            assert inst == expected_date
+
+        # when passing data in with _from_openapi_data one must use str
+        with self.assertRaisesRegex(
+            petstore_api.ApiTypeError,
+            r"Invalid type. Required value type is str and passed type was date at \['args\[0\]'\]"
+        ):
+            DateWithValidations._from_openapi_data(date(2020, 1, 1))
+
+        # when passing data in from the server we can use str
+        valid_values = ["2020-01-01", "2020-01", "2020"]
+        expected_date = date(2020, 1, 1)
+        for valid_value in valid_values:
+            inst = DateWithValidations._from_openapi_data(valid_value)
+            assert inst.as_date == expected_date
+
+        # value error is raised if an invalid string is passed in
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Value does not conform to the required ISO-8601 date format. Invalid value '2020-01-01T00:00:00Z' for type date at \('args\[0\]',\)"
+        ):
+            DateWithValidations._from_openapi_data("2020-01-01T00:00:00Z")
+
+        # value error is raised if a datetime is passed in
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Value does not conform to the required ISO-8601 date format. Invalid value '2020-01-01T00:00:00' for type date at \('args\[0\]',\)"
+        ):
+            DateWithValidations(datetime(2020, 1, 1))
+
+        # value error is raised if an invalid string is passed in
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Value does not conform to the required ISO-8601 date format. Invalid value 'abcd' for type date at \('args\[0\]',\)"
+        ):
+            DateWithValidations._from_openapi_data("abcd")
+
+        # pattern checking for str input
+        error_regex = r"Invalid value `2019-01-01`, must match regular expression `.+?` at \('args\[0\]',\)"
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            error_regex
+        ):
+            DateWithValidations._from_openapi_data("2019-01-01")
+        # pattern checking for date input
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            error_regex
+        ):
+            DateWithValidations(date(2019, 1, 1))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_decimal_payload.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_decimal_payload.py
new file mode 100644
index 00000000000..25122fc35f4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_decimal_payload.py
@@ -0,0 +1,46 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import decimal
+import unittest
+
+import petstore_api
+from petstore_api.schemas import DecimalSchema
+from petstore_api.model.decimal_payload import DecimalPayload
+
+
+class TestDecimalPayload(unittest.TestCase):
+    """DecimalPayload unit test stubs"""
+
+    def test_DecimalPayload(self):
+        """Test DecimalPayload"""
+
+        m = DecimalPayload('12')
+        assert isinstance(m, DecimalPayload)
+        assert isinstance(m, DecimalSchema)
+        assert isinstance(m, str)
+        assert m == '12'
+        assert m.as_decimal == decimal.Decimal('12')
+
+        m = DecimalPayload('12.34')
+        assert isinstance(m, DecimalPayload)
+        assert isinstance(m, DecimalSchema)
+        assert isinstance(m, str)
+        assert m == '12.34'
+        assert m.as_decimal == decimal.Decimal('12.34')
+
+        # passing in a Decimal does not work
+        with self.assertRaises(petstore_api.ApiTypeError):
+            DecimalPayload(decimal.Decimal('12.34'))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_deserialization.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_deserialization.py
new file mode 100644
index 00000000000..f3a389d67e7
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_deserialization.py
@@ -0,0 +1,458 @@
+# coding: utf-8
+
+# flake8: noqa
+
+"""
+Run the tests.
+$ pip install nose (optional)
+$ cd OpenAPIPetstore-python
+$ nosetests -v
+"""
+from collections import namedtuple
+from decimal import Decimal
+import json
+import typing
+import unittest
+
+import urllib3
+
+import petstore_api
+from petstore_api import api_client
+from petstore_api.schemas import NoneClass
+
+
+MockResponse = namedtuple('MockResponse', 'data')
+
+
+class DeserializationTests(unittest.TestCase):
+    json_content_type = 'application/json'
+    json_content_type_headers = {'content-type': json_content_type}
+    configuration = petstore_api.Configuration()
+
+    @classmethod
+    def __response(cls, data: typing.Any) -> urllib3.HTTPResponse:
+        return urllib3.HTTPResponse(
+            json.dumps(data).encode('utf-8'),
+            headers=cls.json_content_type_headers
+        )
+
+    def test_deserialize_shape(self):
+        """
+
+        deserialize Shape to an instance of:
+        - EquilateralTriangle
+        - IsoscelesTriangle
+        - IsoscelesTriangle
+        - ScaleneTriangle
+        - ComplexQuadrilateral
+        - SimpleQuadrilateral
+        by traveling through 2 discriminators
+        """
+        from petstore_api.model import shape, equilateral_triangle
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=shape.Shape),
+            },
+        )
+        data = {
+            'shapeType': 'Triangle',
+            'triangleType': 'EquilateralTriangle',
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, equilateral_triangle.EquilateralTriangle))
+        self.assertEqual(body.shapeType, 'Triangle')
+        self.assertEqual(body.triangleType, 'EquilateralTriangle')
+
+        # invalid quadrilateralType, second discriminator value
+        data = {
+            'shapeType': 'Quadrilateral',
+            'quadrilateralType': 'Triangle',
+        }
+        response = self.__response(data)
+
+        err_msg = (
+            r"Invalid discriminator value was passed in to Quadrilateral.quadrilateralType Only the values "
+            r"\['ComplexQuadrilateral', 'SimpleQuadrilateral'\] are allowed at \('args\[0\]', 'quadrilateralType'\)"
+        )
+        with self.assertRaisesRegex(petstore_api.ApiValueError, err_msg):
+            _response_for_200.deserialize(response, self.configuration)
+
+    def test_deserialize_animal(self):
+        """
+        deserialize Animal to a Dog instance
+        Animal uses a discriminator which has a map built of child classes
+        that inherrit from Animal
+        This is the swagger (v2) way of doing something like oneOf composition
+        """
+        from petstore_api.model import animal, dog
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=animal.Animal),
+            },
+        )
+        data = {
+            'className': 'Dog',
+            'color': 'white',
+            'breed': 'Jack Russel Terrier'
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, dog.Dog))
+        self.assertEqual(body.className, 'Dog')
+        self.assertEqual(body.color, 'white')
+        self.assertEqual(body.breed, 'Jack Russel Terrier')
+
+    def test_regex_constraint(self):
+        """
+        Test regex pattern validation.
+        """
+        from petstore_api.model import apple
+
+        # Test with valid regex pattern.
+        inst = apple.Apple(
+            cultivar="Akane"
+        )
+        assert isinstance(inst, apple.Apple)
+
+        inst = apple.Apple(
+            cultivar="Golden Delicious",
+            origin="cHiLe"
+        )
+        assert isinstance(inst, apple.Apple)
+
+        # Test with invalid regex pattern.
+        err_regex = r"Invalid value `.+?`, must match regular expression `.+?` at \('args\[0\]', 'cultivar'\)"
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            err_regex
+        ):
+            inst = apple.Apple(
+                cultivar="!@#%@$#Akane"
+            )
+
+        err_regex = r"Invalid value `.+?`, must match regular expression `.+?` at \('args\[0\]', 'origin'\)"
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            err_regex
+        ):
+            inst = apple.Apple(
+                cultivar="Golden Delicious",
+                origin="!@#%@$#Chile"
+            )
+
+    def test_deserialize_mammal(self):
+        """
+        deserialize mammal
+        mammal is a oneOf composed schema model with discriminator
+        """
+
+        # whale test
+        from petstore_api.model import mammal, zebra, whale
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=mammal.Mammal),
+            },
+        )
+        has_baleen = True
+        has_teeth = False
+        class_name = 'whale'
+        data = {
+            'hasBaleen': has_baleen,
+            'hasTeeth': has_teeth,
+            'className': class_name
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, whale.Whale))
+        self.assertEqual(bool(body.hasBaleen), has_baleen)
+        self.assertEqual(bool(body.hasTeeth), has_teeth)
+        self.assertEqual(body.className, class_name)
+
+        # zebra test
+        zebra_type = 'plains'
+        class_name = 'zebra'
+        data = {
+            'type': zebra_type,
+            'className': class_name
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, zebra.Zebra))
+        self.assertEqual(body.type, zebra_type)
+        self.assertEqual(body.className, class_name)
+
+    def test_deserialize_float_value(self):
+        """
+        Deserialize floating point values.
+        """
+        from petstore_api.model import banana
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=banana.Banana),
+            },
+        )
+        data = {
+          'lengthCm': 3.1415
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, banana.Banana))
+        self.assertTrue(isinstance(body.lengthCm, Decimal))
+        self.assertEqual(body.lengthCm, 3.1415)
+
+        """
+        Float value is serialized without decimal point
+        The client receive it as an integer, which work because Banana.lengthCm is type number without format
+        Which accepts int AND float
+        """
+        data = {
+          'lengthCm': 3
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, banana.Banana))
+        self.assertTrue(isinstance(body.lengthCm, Decimal))
+        self.assertEqual(body.lengthCm, 3)
+
+    def test_deserialize_fruit_null_value(self):
+        """
+        deserialize fruit with null value.
+        fruitReq is a oneOf composed schema model with discriminator, including 'null' type.
+        """
+        from petstore_api.model import fruit_req
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=fruit_req.FruitReq),
+            },
+        )
+        data = None
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        self.assertTrue(isinstance(deserialized.body, fruit_req.FruitReq))
+        self.assertTrue(isinstance(deserialized.body, NoneClass))
+
+    def test_deserialize_with_additional_properties(self):
+        """
+        Deserialize data with schemas that have the additionalProperties keyword.
+        Test conditions when additional properties are allowed, not allowed, have
+        specific types...
+        """
+
+        # Dog is allOf with two child schemas.
+        # The OAS document for Dog does not specify the 'additionalProperties' keyword,
+        # which means that by default, the Dog schema must allow undeclared properties.
+        # The additionalProperties keyword is used to control the handling of extra stuff,
+        # that is, properties whose names are not listed in the properties keyword.
+        # By default any additional properties are allowed.
+        from petstore_api.model import dog, mammal, zebra, banana_req
+        data = {
+            'className': 'Dog',
+            'color': 'brown',
+            'breed': 'golden retriever',
+            # Below are additional, undeclared properties.
+            'group': 'Terrier Group',
+            'size': 'medium',
+        }
+        response = self.__response(data)
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=dog.Dog),
+            },
+        )
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, dog.Dog))
+        self.assertEqual(body.className, 'Dog')
+        self.assertEqual(body.color, 'brown')
+        self.assertEqual(body.breed, 'golden retriever')
+        self.assertEqual(body.group, 'Terrier Group')
+        self.assertEqual(body.size, 'medium')
+
+        # The 'zebra' schema allows additional properties by explicitly setting
+        # additionalProperties: true.
+        # This is equivalent to 'additionalProperties' not being present.
+        data = {
+            'className': 'zebra',
+            'type': 'plains',
+            # Below are additional, undeclared properties
+            'group': 'abc',
+            'size': 3,
+            'p1': True,
+            'p2': ['a', 'b', 123],
+        }
+        response = self.__response(data)
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=mammal.Mammal),
+            },
+        )
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        body = deserialized.body
+        self.assertTrue(isinstance(body, zebra.Zebra))
+        self.assertEqual(body.className, 'zebra')
+        self.assertEqual(body.type, 'plains')
+        self.assertEqual(bool(body.p1), True)
+
+        # The 'bananaReq' schema disallows additional properties by explicitly setting
+        # additionalProperties: false
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=banana_req.BananaReq),
+            },
+        )
+        with self.assertRaisesRegex(
+            petstore_api.exceptions.ApiTypeError,
+            r"BananaReq was passed 1 invalid argument: \['unknown-group'\]"
+        ):
+            data = {
+                'lengthCm': 21.2,
+                'sweet': False,
+                # Below are additional, undeclared properties. They are not allowed,
+                # an exception must be raised.
+                'unknown-group': 'abc',
+            }
+            response = self.__response(data)
+            _response_for_200.deserialize(response, self.configuration)
+
+    def test_deserialize_with_additional_properties_and_reference(self):
+        """
+        Deserialize data with schemas that has the additionalProperties keyword
+        and the schema is specified as a reference ($ref).
+        """
+        from petstore_api.model import drawing
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=drawing.Drawing),
+            },
+        )
+        data = {
+            'mainShape': {
+                'shapeType': 'Triangle',
+                'triangleType': 'EquilateralTriangle',
+            },
+            'shapes': [
+                {
+                    'shapeType': 'Triangle',
+                    'triangleType': 'IsoscelesTriangle',
+                },
+                {
+                    'shapeType': 'Quadrilateral',
+                    'quadrilateralType': 'ComplexQuadrilateral',
+                },
+            ],
+            'an_additional_prop': {
+                'lengthCm': 4,
+                'color': 'yellow'
+            }
+        }
+        response = self.__response(data)
+        _response_for_200.deserialize(response, self.configuration)
+
+    def test_deserialize_NumberWithValidations(self):
+        from petstore_api.model.number_with_validations import NumberWithValidations
+        from petstore_api.api.fake_api_endpoints.number_with_validations import _response_for_200
+
+        # make sure that an exception is thrown on an invalid type value
+        with self.assertRaises(petstore_api.ApiTypeError):
+            response = self.__response('test str')
+            _response_for_200.deserialize(response, self.configuration)
+
+        # make sure that an exception is thrown on an invalid value
+        with self.assertRaises(petstore_api.ApiValueError):
+            response = self.__response(21.0)
+            _response_for_200.deserialize(response, self.configuration)
+
+        # valid value works
+        number_val = 11.0
+        response = self.__response(number_val)
+        response = _response_for_200.deserialize(response, self.configuration)
+        self.assertTrue(isinstance(response.body, NumberWithValidations))
+        self.assertEqual(response.body, number_val)
+
+    def test_array_of_enums(self):
+        from petstore_api.model.array_of_enums import ArrayOfEnums
+        from petstore_api.api.fake_api_endpoints.array_of_enums import _response_for_200
+        from petstore_api.model import string_enum
+        data = ["placed", None]
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        assert isinstance(deserialized.body, ArrayOfEnums)
+        expected_results = ArrayOfEnums([string_enum.StringEnum(v) for v in data])
+        assert expected_results == deserialized.body
+
+    def test_multiple_of_deserialization(self):
+        data = {
+            'byte': '3',
+            'date': '1970-01-01',
+            'password': "abcdefghijkl",
+            'integer': 30,
+            'number': 65.0,
+            'float': 62.4,
+        }
+        from petstore_api.model import format_test
+        _response_for_200 = api_client.OpenApiResponse(
+            content={
+                self.json_content_type: api_client.MediaType(schema=format_test.FormatTest),
+            },
+        )
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, self.configuration)
+        self.assertTrue(isinstance(deserialized.body, format_test.FormatTest))
+
+        with self.assertRaisesRegex(
+            petstore_api.exceptions.ApiValueError,
+            r"Invalid value `31`, value must be a multiple of `2` at \('args\[0\]', 'integer'\)"
+        ):
+            data = {
+                'byte': '3',
+                'date': '1970-01-01',
+                'password': "abcdefghijkl",
+                'integer': 31,  # Value is supposed to be multiple of '2'. An error must be raised
+                'number': 65.0,
+                'float': 62.4,
+            }
+            response = self.__response(data)
+            _response_for_200.deserialize(response, self.configuration)
+
+        # Disable JSON schema validation. No error should be raised during deserialization.
+        configuration = petstore_api.Configuration()
+        configuration.disabled_client_side_validations = "multipleOf"
+
+        data = {
+            'byte': '3',
+            'date': '1970-01-01',
+            'password': "abcdefghijkl",
+            'integer': 31, # Value is supposed to be multiple of '2'
+            'number': 65.0,
+            'float': 62.4,
+        }
+        response = self.__response(data)
+        deserialized = _response_for_200.deserialize(response, configuration)
+        self.assertTrue(isinstance(deserialized.body, format_test.FormatTest))
+
+        # Disable JSON schema validation but for a different keyword.
+        # An error should be raised during deserialization.
+        configuration = petstore_api.Configuration()
+        configuration.disabled_client_side_validations = "maxItems"
+
+        with self.assertRaisesRegex(
+            petstore_api.exceptions.ApiValueError,
+            r"Invalid value `31`, value must be a multiple of `2` at \('args\[0\]', 'integer'\)"
+        ):
+            data = {
+                'byte': '3',
+                'date': '1970-01-01',
+                'password': "abcdefghijkl",
+                'integer': 31, # Value is supposed to be multiple of '2'
+                'number': 65.0,
+                'float': 62.4,
+            }
+            response = self.__response(data)
+            _response_for_200.deserialize(response, configuration)
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_discard_unknown_properties.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_discard_unknown_properties.py
new file mode 100644
index 00000000000..97d850d56b6
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_discard_unknown_properties.py
@@ -0,0 +1,157 @@
+# # coding: utf-8
+#
+# # flake8: noqa
+#
+# """
+# Run the tests.
+# $ docker pull swaggerapi/petstore
+# $ docker run -d -e SWAGGER_HOST=http://petstore.swagger.io -e SWAGGER_BASE_PATH=/v2 -p 80:8080 swaggerapi/petstore
+# $ pip install nose (optional)
+# $ cd petstore_api-python
+# $ nosetests -v
+# """
+# from collections import namedtuple
+# import json
+# import re
+# import unittest
+#
+# import petstore_api
+# from petstore_api.model import cat, dog, isosceles_triangle, banana_req
+# from petstore_api import Configuration, signing
+#
+# from petstore_api.schemas import (
+#     file_type,
+#     model_to_dict,
+# )
+#
+# MockResponse = namedtuple('MockResponse', 'data')
+#
+# class DiscardUnknownPropertiesTests(unittest.TestCase):
+#
+#     def test_deserialize_banana_req_do_not_discard_unknown_properties(self):
+#         """
+#         deserialize bananaReq with unknown properties.
+#         Strict validation is enabled.
+#         Simple (non-composed) schema scenario.
+#         """
+#         config = Configuration(discard_unknown_keys=False)
+#         api_client = petstore_api.ApiClient(config)
+#         data = {
+#             'lengthCm': 21.3,
+#             'sweet': False,
+#             # Below is an unknown property not explicitly declared in the OpenAPI document.
+#             # It should not be in the payload because additional properties (undeclared) are
+#             # not allowed in the bananaReq schema (additionalProperties: false).
+#             'unknown_property': 'a-value'
+#         }
+#         response = MockResponse(data=json.dumps(data))
+#
+#         # Deserializing with strict validation raises an exception because the 'unknown_property'
+#         # is undeclared.
+#         with self.assertRaises(petstore_api.exceptions.ApiAttributeError) as cm:
+#             deserialized = api_client.deserialize(response, ((banana_req.BananaReq),), True)
+#         self.assertTrue(re.match("BananaReq has no attribute 'unknown_property' at.*", str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#
+#     def test_deserialize_isosceles_triangle_do_not_discard_unknown_properties(self):
+#         """
+#         deserialize IsoscelesTriangle with unknown properties.
+#         Strict validation is enabled.
+#         Composed schema scenario.
+#         """
+#         config = Configuration(discard_unknown_keys=False)
+#         api_client = petstore_api.ApiClient(config)
+#         data = {
+#             'shape_type': 'Triangle',
+#             'triangle_type': 'EquilateralTriangle',
+#             # Below is an unknown property not explicitly declared in the OpenAPI document.
+#             # It should not be in the payload because additional properties (undeclared) are
+#             # not allowed in the schema (additionalProperties: false).
+#             'unknown_property': 'a-value'
+#         }
+#         response = MockResponse(data=json.dumps(data))
+#
+#         # Deserializing with strict validation raises an exception because the 'unknown_property'
+#         # is undeclared.
+#         with self.assertRaises(petstore_api.ApiValueError) as cm:
+#             deserialized = api_client.deserialize(response, ((isosceles_triangle.IsoscelesTriangle),), True)
+#         self.assertTrue(re.match('.*Not all inputs were used.*unknown_property.*', str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#
+#     def test_deserialize_banana_req_discard_unknown_properties(self):
+#         """
+#         Deserialize bananaReq with unknown properties.
+#         Discard unknown properties.
+#         """
+#         config = Configuration(discard_unknown_keys=True)
+#         api_client = petstore_api.ApiClient(config)
+#         data = {
+#             'lengthCm': 21.3,
+#             'sweet': False,
+#             # Below are additional (undeclared) properties not specified in the bananaReq schema.
+#             'unknown_property': 'a-value',
+#             'more-unknown': [
+#                 'a'
+#             ]
+#         }
+#         # The 'unknown_property' is undeclared, which would normally raise an exception, but
+#         # when discard_unknown_keys is set to True, the unknown properties are discarded.
+#         response = MockResponse(data=json.dumps(data))
+#         deserialized = api_client.deserialize(response, ((banana_req.BananaReq),), True)
+#         self.assertTrue(isinstance(deserialized, banana_req.BananaReq))
+#         # Check the 'unknown_property' and 'more-unknown' properties are not present in the
+#         # output.
+#         self.assertIn("length_cm", deserialized.to_dict().keys())
+#         self.assertNotIn("unknown_property", deserialized.to_dict().keys())
+#         self.assertNotIn("more-unknown", deserialized.to_dict().keys())
+#
+#     def test_deserialize_cat_do_not_discard_unknown_properties(self):
+#         """
+#         Deserialize Cat with unknown properties.
+#         Strict validation is enabled.
+#         """
+#         config = Configuration(discard_unknown_keys=False)
+#         api_client = petstore_api.ApiClient(config)
+#         data = {
+#             "class_name": "Cat",
+#             "color": "black",
+#             "declawed": True,
+#             "dynamic-property": 12345,
+#         }
+#         response = MockResponse(data=json.dumps(data))
+#
+#         # Deserializing with strict validation does not raise an exception because the even though
+#         # the 'dynamic-property' is undeclared, the 'Cat' schema defines the additionalProperties
+#         # attribute.
+#         deserialized = api_client.deserialize(response, ((cat.Cat),), True)
+#         self.assertTrue(isinstance(deserialized, cat.Cat))
+#         self.assertIn('color', deserialized.to_dict())
+#         self.assertEqual(deserialized['color'], 'black')
+#
+#     def test_deserialize_cat_discard_unknown_properties(self):
+#         """
+#         Deserialize Cat with unknown properties.
+#         Request to discard unknown properties, but Cat is composed schema
+#         with one inner schema that has 'additionalProperties' set to true.
+#         """
+#         config = Configuration(discard_unknown_keys=True)
+#         api_client = petstore_api.ApiClient(config)
+#         data = {
+#             "class_name": "Cat",
+#             "color": "black",
+#             "declawed": True,
+#             # Below are additional (undeclared) properties.
+#             "my_additional_property": 123,
+#         }
+#         # The 'my_additional_property' is undeclared, but 'Cat' has a 'Address' type through
+#         # the allOf: [ $ref: '#/components/schemas/Address' ].
+#         response = MockResponse(data=json.dumps(data))
+#         deserialized = api_client.deserialize(response, ((cat.Cat),), True)
+#         self.assertTrue(isinstance(deserialized, cat.Cat))
+#         # Check the 'unknown_property' and 'more-unknown' properties are not present in the
+#         # output.
+#         self.assertIn("declawed", deserialized.to_dict().keys())
+#         self.assertIn("my_additional_property", deserialized.to_dict().keys())
+#
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_drawing.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_drawing.py
new file mode 100644
index 00000000000..3be8388499c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_drawing.py
@@ -0,0 +1,166 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.schemas import NoneClass
+from petstore_api.model import shape
+from petstore_api.model import shape_or_null
+from petstore_api.model.drawing import Drawing
+
+
+class TestDrawing(unittest.TestCase):
+    """Drawing unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_create_instances(self):
+        """
+        Validate instance can be created
+        """
+
+        inst = shape.Shape(
+            shapeType="Triangle",
+            triangleType="IsoscelesTriangle"
+        )
+        from petstore_api.model.isosceles_triangle import IsoscelesTriangle
+        assert isinstance(inst, IsoscelesTriangle)
+
+    def test_deserialize_oneof_reference(self):
+        """
+        Validate the scenario when the type of a OAS property is 'oneOf', and the 'oneOf'
+        schema is specified as a reference ($ref), not an inline 'oneOf' schema.
+        """
+        isosceles_triangle = shape.Shape(
+            shapeType="Triangle",
+            triangleType="IsoscelesTriangle"
+        )
+        from petstore_api.model.isosceles_triangle import IsoscelesTriangle
+        assert isinstance(isosceles_triangle, IsoscelesTriangle)
+        from petstore_api.model.equilateral_triangle import EquilateralTriangle
+
+        inst = Drawing(
+            mainShape=isosceles_triangle,
+            shapes=[
+                shape.Shape(
+                    shapeType="Triangle",
+                    triangleType="EquilateralTriangle"
+                ),
+                shape.Shape(
+                    shapeType="Triangle",
+                    triangleType="IsoscelesTriangle"
+                ),
+                shape.Shape(
+                    shapeType="Triangle",
+                    triangleType="EquilateralTriangle"
+                ),
+                shape.Shape(
+                    shapeType="Quadrilateral",
+                    quadrilateralType="ComplexQuadrilateral"
+                )
+            ],
+        )
+        assert isinstance(inst, Drawing)
+        assert isinstance(inst.mainShape, IsoscelesTriangle)
+        self.assertEqual(len(inst.shapes), 4)
+        from petstore_api.model.complex_quadrilateral import ComplexQuadrilateral
+        assert isinstance(inst.shapes[0], EquilateralTriangle)
+        assert isinstance(inst.shapes[1], IsoscelesTriangle)
+        assert isinstance(inst.shapes[2], EquilateralTriangle)
+        assert isinstance(inst.shapes[3], ComplexQuadrilateral)
+
+        # Validate we cannot assign the None value to mainShape because the 'null' type
+        # is not one of the allowed types in the 'Shape' schema.
+        err_msg = (r"Invalid inputs given to generate an instance of .+?Shape.+? "
+                   r"None of the oneOf schemas matched the input data.")
+        with self.assertRaisesRegex(
+                petstore_api.ApiValueError,
+                err_msg
+        ):
+            inst = Drawing(
+                # 'mainShape' has type 'Shape', which is a oneOf [triangle, quadrilateral]
+                # So the None value should not be allowed and an exception should be raised.
+                mainShape=None,
+            )
+
+        """
+        we can't pass in an incorrect type for shapes
+        'shapes' items has type 'Shape', which is a oneOf [Triangle, Quadrilateral]
+        composed schema. We are not able to assign Triangle tor Quadrilateral
+        to a shapes item because those instances do not include Shape validation
+        Shape could require additional validations that Triangle + Quadrilateral do not include
+        """
+        from petstore_api.model.triangle import Triangle
+        err_msg = (r"Incorrect type passed in, required type was <class 'petstore_api.model.shape.Shape'> "
+                   r"and passed type was <class 'petstore_api.schemas.DynamicSchema'> at "
+                   r"\('args\[0\]', 'shapes', 0\)")
+        with self.assertRaisesRegex(
+                petstore_api.ApiTypeError,
+                err_msg
+        ):
+            inst = Drawing(
+                mainShape=isosceles_triangle,
+                shapes=[
+                    Triangle(
+                        shapeType="Triangle",
+                        triangleType="EquilateralTriangle"
+                    )
+                ]
+            )
+
+    def test_deserialize_oneof_reference_with_null_type(self):
+        """
+        Validate the scenario when the type of a OAS property is 'oneOf', and the 'oneOf'
+        schema is specified as a reference ($ref), not an inline 'oneOf' schema.
+        Further, the 'oneOf' schema has a 'null' type child schema (as introduced in
+        OpenAPI 3.1).
+        """
+
+        # Validate we can assign the None value to shape_or_null, because the 'null' type
+        # is one of the allowed types in the 'ShapeOrNull' schema.
+        inst = Drawing(
+            # 'shapeOrNull' has type 'ShapeOrNull', which is a oneOf [null, triangle, quadrilateral]
+            shapeOrNull=None,
+        )
+        assert isinstance(inst, Drawing)
+        self.assertFalse('mainShape' in inst)
+        self.assertTrue('shapeOrNull' in inst)
+        self.assertTrue(isinstance(inst.shapeOrNull, NoneClass))
+
+    def test_deserialize_oneof_reference_with_nullable_type(self):
+        """
+        Validate the scenario when the type of a OAS property is 'oneOf', and the 'oneOf'
+        schema is specified as a reference ($ref), not an inline 'oneOf' schema.
+        Further, the 'oneOf' schema has the 'nullable' attribute (as introduced in
+        OpenAPI 3.0 and deprecated in 3.1).
+        """
+
+        # Validate we can assign the None value to nullableShape, because the NullableShape
+        # has the 'nullable: true' attribute.
+        inst = Drawing(
+            # 'nullableShape' has type 'NullableShape', which is a oneOf [triangle, quadrilateral]
+            # and the 'nullable: true' attribute.
+            nullableShape=None,
+        )
+        assert isinstance(inst, Drawing)
+        self.assertFalse('mainShape' in inst)
+        self.assertTrue('nullableShape' in inst)
+        self.assertTrue(isinstance(inst.nullableShape, NoneClass))
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_extra_pool_config_options.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_extra_pool_config_options.py
new file mode 100644
index 00000000000..5bf6b989ebe
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_extra_pool_config_options.py
@@ -0,0 +1,61 @@
+import unittest
+from unittest.mock import patch
+
+import petstore_api
+
+
+class StubPoolManager(object):
+    actual_kwargs = None
+
+    def __init__(self, num_pools=10, headers=None, **kwargs):
+        # Matches the contract of urllib3.PoolManager
+        self.actual_kwargs = kwargs
+
+
+class StubProxyManager:
+    actual_kwargs = None
+
+    def __init__(
+        self,
+        proxy_url,
+        num_pools=10,
+        headers=None,
+        proxy_headers=None,
+        **kwargs
+    ):
+        # Matches the contract of urllib3.ProxyManager
+        self.actual_kwargs = kwargs
+
+
+class TestExtraOptionsForPools(unittest.TestCase):
+
+    def test_socket_options_get_passed_to_pool_manager(self):
+
+        socket_options = ["extra", "socket", "options"]
+
+        config = petstore_api.Configuration(host="HOST")
+        config.socket_options = socket_options
+
+        with patch("petstore_api.rest.urllib3.PoolManager", StubPoolManager):
+            api_client = petstore_api.ApiClient(config)
+
+        # urllib3.PoolManager promises to pass socket_options in kwargs
+        # to the underlying socket. So asserting that our manager
+        # gets it is a good start
+        assert api_client.rest_client.pool_manager.actual_kwargs["socket_options"] == socket_options
+
+    def test_socket_options_get_passed_to_proxy_manager(self):
+
+        socket_options = ["extra", "socket", "options"]
+
+        config = petstore_api.Configuration(host="HOST")
+        config.socket_options = socket_options
+        config.proxy = True
+
+        with patch("petstore_api.rest.urllib3.ProxyManager", StubProxyManager):
+            api_client = petstore_api.ApiClient(config)
+
+        # urllib3.ProxyManager promises to pass socket_options in kwargs
+        # to the underlying socket. So asserting that our manager
+        # gets it is a good start
+        assert api_client.rest_client.pool_manager.actual_kwargs["socket_options"] == socket_options
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fake_api.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fake_api.py
new file mode 100644
index 00000000000..c053cee62fb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fake_api.py
@@ -0,0 +1,575 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import io
+import sys
+import unittest
+import json
+import typing
+from unittest.mock import patch
+
+import urllib3
+from urllib3._collections import HTTPHeaderDict
+
+import petstore_api
+from petstore_api import api_client, schemas
+from petstore_api.api.fake_api import FakeApi  # noqa: E501
+from petstore_api.rest import RESTClientObject
+
+
+class TestFakeApi(unittest.TestCase):
+    """FakeApi unit test stubs"""
+    json_content_type = 'application/json'
+    configuration = petstore_api.Configuration()
+    api = FakeApi(api_client=api_client.ApiClient(configuration=configuration))
+
+    @staticmethod
+    def headers_for_content_type(content_type: str) -> dict[str, str]:
+        return {'content-type': content_type}
+
+    @classmethod
+    def __response(
+        cls,
+        body: typing.Union[str, bytes],
+        status: int = 200,
+        content_type: str = json_content_type,
+        headers: typing.Optional[dict[str, str]] = None,
+        preload_content: bool = True
+    ) -> urllib3.HTTPResponse:
+        if headers is None:
+            headers = {}
+        headers.update(cls.headers_for_content_type(content_type))
+        return urllib3.HTTPResponse(
+            body,
+            headers=headers,
+            status=status,
+            preload_content=preload_content
+        )
+
+    @staticmethod
+    def __json_bytes(in_data: typing.Any) -> bytes:
+        return json.dumps(in_data, separators=(",", ":"), ensure_ascii=False).encode('utf-8')
+
+    @staticmethod
+    def __assert_request_called_with(
+        mock_request,
+        url: str,
+        body: typing.Optional[bytes] = None,
+        content_type: str = 'application/json',
+        fields: typing.Optional[tuple[api_client.RequestField, ...]] = None,
+        accept_content_type: str = 'application/json',
+        stream: bool = False,
+    ):
+        mock_request.assert_called_with(
+            'POST',
+            url,
+            headers=HTTPHeaderDict(
+                {
+                    'Accept': accept_content_type,
+                    'Content-Type': content_type,
+                    'User-Agent': 'OpenAPI-Generator/1.0.0/python'
+                }
+            ),
+            body=body,
+            query_params=None,
+            fields=fields,
+            stream=stream,
+            timeout=None,
+        )
+
+    def test_array_model(self):
+        from petstore_api.model import animal_farm, animal
+
+        # serialization + deserialization works
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            json_data = [{"className": "Cat", "color": "black"}]
+            mock_request.return_value = self.__response(
+                self.__json_bytes(json_data)
+            )
+
+            cat = animal.Animal(className="Cat", color="black")
+            body = animal_farm.AnimalFarm([cat])
+            api_response = self.api.array_model(body=body)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/refs/arraymodel',
+                body=self.__json_bytes(json_data)
+            )
+
+            assert isinstance(api_response.body, animal_farm.AnimalFarm)
+            assert api_response.body == body
+
+    def test_recursionlimit(self):
+        """Test case for recursionlimit
+
+        """
+        assert sys.getrecursionlimit() == 1234
+
+    def test_array_of_enums(self):
+        from petstore_api.model import array_of_enums, string_enum
+
+        # serialization + deserialization works
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            value = [string_enum.StringEnum("placed")]
+            body = array_of_enums.ArrayOfEnums(value)
+            value_simple = ["placed"]
+            mock_request.return_value = self.__response(
+                self.__json_bytes(value_simple)
+            )
+
+            api_response = self.api.array_of_enums(body=body)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/refs/array-of-enums',
+                body=self.__json_bytes(value_simple)
+            )
+
+            assert isinstance(api_response.body, array_of_enums.ArrayOfEnums)
+            assert api_response.body == body
+
+    def test_number_with_validations(self):
+        from petstore_api.model import number_with_validations
+
+        # serialization + deserialization works
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            value = 10.0
+            body = number_with_validations.NumberWithValidations(value)
+            mock_request.return_value = self.__response(
+                self.__json_bytes(value)
+            )
+
+            api_response = self.api.number_with_validations(body=body)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/refs/number',
+                body=self.__json_bytes(value)
+            )
+
+            assert isinstance(api_response.body, number_with_validations.NumberWithValidations)
+            assert api_response.body == value
+
+    def test_composed_one_of_different_types(self):
+        from petstore_api.model import composed_one_of_different_types
+
+        # serialization + deserialization works
+        number = composed_one_of_different_types.ComposedOneOfDifferentTypes(10.0)
+        cat = composed_one_of_different_types.ComposedOneOfDifferentTypes(
+            className="Cat", color="black"
+        )
+        none_instance = composed_one_of_different_types.ComposedOneOfDifferentTypes(None)
+        date_instance = composed_one_of_different_types.ComposedOneOfDifferentTypes('1970-01-01')
+        cast_to_simple_value = [
+            (number, 10.0),
+            (cat, {"className": "Cat", "color": "black"}),
+            (none_instance, None),
+            (date_instance, '1970-01-01'),
+        ]
+        for (body, value_simple) in cast_to_simple_value:
+            with patch.object(RESTClientObject, 'request') as mock_request:
+                mock_request.return_value = self.__response(
+                    self.__json_bytes(value_simple)
+                )
+
+                api_response = self.api.composed_one_of_different_types(body=body)
+                self.__assert_request_called_with(
+                    mock_request,
+                    'http://petstore.swagger.io:80/v2/fake/refs/composed_one_of_number_with_validations',
+                    body=self.__json_bytes(value_simple)
+                )
+
+                assert isinstance(api_response.body, composed_one_of_different_types.ComposedOneOfDifferentTypes)
+                assert api_response.body == body
+
+        # inputting the uncast values into the endpoint also works
+        for (body, value_simple) in cast_to_simple_value:
+            with patch.object(RESTClientObject, 'request') as mock_request:
+                mock_request.return_value = self.__response(
+                    self.__json_bytes(value_simple)
+                )
+
+                api_response = self.api.composed_one_of_different_types(body=value_simple)
+                self.__assert_request_called_with(
+                    mock_request,
+                    'http://petstore.swagger.io:80/v2/fake/refs/composed_one_of_number_with_validations',
+                    body=self.__json_bytes(value_simple)
+                )
+
+                assert isinstance(api_response.body, composed_one_of_different_types.ComposedOneOfDifferentTypes)
+                assert api_response.body == body
+
+    def test_string(self):
+        # serialization + deserialization works
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            body = "blah"
+            value_simple = body
+            mock_request.return_value = self.__response(
+                self.__json_bytes(value_simple)
+            )
+
+            api_response = self.api.string(body=body)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/refs/string',
+                body=self.__json_bytes(value_simple)
+            )
+
+            assert isinstance(api_response.body, str)
+            assert api_response.body == value_simple
+
+    def test_string_enum(self):
+        from petstore_api.model import string_enum
+        # serialization + deserialization works
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            value = "placed"
+            body = string_enum.StringEnum(value)
+            mock_request.return_value = self.__response(
+                self.__json_bytes(value)
+            )
+
+            api_response = self.api.string_enum(body=body)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/refs/enum',
+                body=self.__json_bytes(value)
+            )
+
+            assert isinstance(api_response.body, string_enum.StringEnum)
+            assert api_response.body == value
+
+    def test_mammal(self):
+        # serialization + deserialization works
+        from petstore_api.model.mammal import Mammal
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            body = Mammal(className="BasquePig")
+            value_simple = dict(className='BasquePig')
+            mock_request.return_value = self.__response(
+                self.__json_bytes(value_simple)
+            )
+
+            api_response = self.api.mammal(body=body)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/refs/mammal',
+                body=self.__json_bytes(value_simple)
+            )
+
+            assert isinstance(api_response.body, Mammal)
+            assert api_response.body == value_simple
+
+    def test_missing_or_unset_required_body(self):
+        # missing required body
+        with self.assertRaises(TypeError):
+            self.api.mammal()
+        # required body may not be unset
+        with self.assertRaises(petstore_api.ApiValueError):
+            self.api.mammal(body=schemas.unset)
+
+    def test_missing_or_unset_required_query_parameter(self):
+        from petstore_api.model.user import User
+        user = User({})
+        # missing required query param
+        with self.assertRaises(petstore_api.ApiTypeError):
+            self.api.body_with_query_params(body=user)
+        # required query param may not be unset
+        with self.assertRaises(petstore_api.ApiValueError):
+            self.api.body_with_query_params(body=schemas.unset, query_params=dict(query=schemas.unset))
+
+    def test_upload_download_file_tx_bytes_and_file(self):
+        """Test case for upload_download_file
+        uploads a file and downloads a file using application/octet-stream  # noqa: E501
+        """
+        import os
+        test_file_dir = os.path.realpath(
+            os.path.join(os.path.dirname(__file__), "..", "testfiles"))
+        file_name = '1px_pic1.png'
+        file_path1 = os.path.join(test_file_dir, file_name)
+
+        with open(file_path1, "rb") as some_file:
+            file_bytes = some_file.read()
+        file1 = open(file_path1, "rb")
+        mock_response = self.__response(
+            file_bytes,
+            content_type='application/octet-stream'
+        )
+        try:
+            with patch.object(RESTClientObject, 'request') as mock_request:
+                mock_request.return_value = mock_response
+                api_response = self.api.upload_download_file(body=file1)
+                self.__assert_request_called_with(
+                    mock_request,
+                    'http://petstore.swagger.io:80/v2/fake/uploadDownloadFile',
+                    body=file_bytes,
+                    content_type='application/octet-stream',
+                    accept_content_type='application/octet-stream'
+                )
+                self.assertTrue(isinstance(api_response.body, schemas.BinarySchema))
+                self.assertTrue(isinstance(api_response.body, schemas.BytesSchema))
+                self.assertTrue(isinstance(api_response.body, bytes))
+                self.assertEqual(api_response.body, file_bytes)
+        except petstore_api.ApiException as e:
+            self.fail("upload_file() raised {0} unexpectedly".format(type(e)))
+        finally:
+            file1.close()
+
+        # sending just bytes works also
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            mock_request.return_value = mock_response
+            api_response = self.api.upload_download_file(body=file_bytes)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/uploadDownloadFile',
+                body=file_bytes,
+                content_type='application/octet-stream',
+                accept_content_type='application/octet-stream'
+            )
+            self.assertEqual(api_response.body, file_bytes)
+
+    def test_upload_download_file_rx_file(self):
+        import os
+        test_file_dir = os.path.realpath(
+            os.path.join(os.path.dirname(__file__), "..", "testfiles"))
+        file_name = '1px_pic1.png'
+        file_path1 = os.path.join(test_file_dir, file_name)
+
+        with open(file_path1, "rb") as some_file:
+            file_bytes = some_file.read()
+
+        # passing in file1 as the response body simulates a streamed response
+        file1 = open(file_path1, "rb")
+
+        class StreamableBody:
+            """
+            This class simulates http.client.HTTPResponse for a streamable response
+            """
+            def __init__(self, file: io.BufferedReader):
+                self.fp = file
+
+            def read(self, *args, **kwargs):
+                return self.fp.read(*args, **kwargs)
+
+            def close(self):
+                self.fp.close()
+
+        streamable_body = StreamableBody(file1)
+
+        mock_response = self.__response(
+            streamable_body,
+            content_type='application/octet-stream',
+            preload_content=False
+        )
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            mock_request.return_value = mock_response
+            api_response = self.api.upload_download_file(body=file_bytes, stream=True)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/uploadDownloadFile',
+                body=file_bytes,
+                content_type='application/octet-stream',
+                accept_content_type='application/octet-stream',
+                stream=True
+            )
+        self.assertTrue(file1.closed)
+        self.assertTrue(isinstance(api_response.body, schemas.BinarySchema))
+        self.assertTrue(isinstance(api_response.body, schemas.FileSchema))
+        self.assertTrue(isinstance(api_response.body, schemas.FileIO))
+        self.assertEqual(api_response.body.read(), file_bytes)
+        api_response.body.close()
+        os.unlink(api_response.body.name)
+
+        file1 = open(file_path1, "rb")
+        streamable_body = StreamableBody(file1)
+        saved_file_name = "fileName.abc"
+
+        """
+        when streaming is used and the response contains the content disposition header with a filename
+        that filename is used when saving the file locally
+        """
+        mock_response = self.__response(
+            streamable_body,
+            content_type='application/octet-stream',
+            headers={'content-disposition': f'attachment; filename="{saved_file_name}"'},
+            preload_content=False
+        )
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            mock_request.return_value = mock_response
+            api_response = self.api.upload_download_file(body=file_bytes, stream=True)
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/uploadDownloadFile',
+                body=file_bytes,
+                content_type='application/octet-stream',
+                accept_content_type='application/octet-stream',
+                stream=True
+            )
+        self.assertTrue(file1.closed)
+        self.assertTrue(isinstance(api_response.body, schemas.BinarySchema))
+        self.assertTrue(isinstance(api_response.body, schemas.FileSchema))
+        self.assertTrue(isinstance(api_response.body, schemas.FileIO))
+        self.assertTrue(api_response.body.name.endswith(saved_file_name))
+        self.assertEqual(api_response.body.read(), file_bytes)
+        api_response.body.close()
+        os.unlink(api_response.body.name)
+
+    def test_upload_file(self):
+        """Test case for upload_file
+        uploads a file using multipart/form-data  # noqa: E501
+        """
+        import os
+        test_file_dir = os.path.realpath(
+            os.path.join(os.path.dirname(__file__), "..", "testfiles"))
+        file_name = '1px_pic1.png'
+        file_path1 = os.path.join(test_file_dir, file_name)
+
+        with open(file_path1, "rb") as some_file:
+            file_bytes = some_file.read()
+        file1 = open(file_path1, "rb")
+        response_json = {
+            'code': 200,
+            'type': 'blah',
+            'message': 'file upload succeeded'
+        }
+        try:
+            with patch.object(RESTClientObject, 'request') as mock_request:
+                mock_request.return_value = self.__response(
+                    self.__json_bytes(response_json)
+                )
+                api_response = self.api.upload_file(body={'file': file1})
+                self.__assert_request_called_with(
+                    mock_request,
+                    'http://petstore.swagger.io:80/v2/fake/uploadFile',
+                    fields=(
+                        api_client.RequestField(
+                            name='file',
+                            data=file_bytes,
+                            filename=file_name,
+                            headers={'Content-Type': 'application/octet-stream'}
+                        ),
+                    ),
+                    content_type='multipart/form-data'
+                )
+                self.assertEqual(api_response.body, response_json)
+        except petstore_api.ApiException as e:
+            self.fail("upload_file() raised {0} unexpectedly".format(type(e)))
+        finally:
+            file1.close()
+
+        # sending just bytes works also
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            mock_request.return_value = self.__response(
+                self.__json_bytes(response_json)
+            )
+            api_response = self.api.upload_file(body={'file': file_bytes})
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/uploadFile',
+                fields=(
+                    api_client.RequestField(
+                        name='file',
+                        data=file_bytes,
+                        headers={'Content-Type': 'application/octet-stream'}
+                    ),
+                ),
+                content_type='multipart/form-data'
+            )
+            self.assertEqual(api_response.body, response_json)
+
+        # passing in an array of files to when file only allows one
+        # raises an exceptions
+        try:
+            file = open(file_path1, "rb")
+            with self.assertRaises(petstore_api.ApiTypeError):
+                self.api.upload_file(body={'file': [file]})
+        finally:
+            file.close()
+
+        # passing in a closed file raises an exception
+        with self.assertRaises(ValueError):
+            file = open(file_path1, "rb")
+            file.close()
+            self.api.upload_file(body={'file': file})
+
+    def test_upload_files(self):
+        """Test case for upload_files
+        uploads files using multipart/form-data  # noqa: E501
+        """
+        import os
+        test_file_dir = os.path.realpath(
+            os.path.join(os.path.dirname(__file__), "..", "testfiles"))
+        file_name = '1px_pic1.png'
+        file_path1 = os.path.join(test_file_dir, file_name)
+
+        with open(file_path1, "rb") as some_file:
+            file_bytes = some_file.read()
+        file1 = open(file_path1, "rb")
+        response_json = {
+            'code': 200,
+            'type': 'blah',
+            'message': 'file upload succeeded'
+        }
+        try:
+            with patch.object(RESTClientObject, 'request') as mock_request:
+                mock_request.return_value = self.__response(
+                    self.__json_bytes(response_json)
+                )
+                api_response = self.api.upload_files(body={'files': [file1, file1]})
+                self.__assert_request_called_with(
+                    mock_request,
+                    'http://petstore.swagger.io:80/v2/fake/uploadFiles',
+                    fields=(
+                        api_client.RequestField(
+                            name='files',
+                            data=file_bytes,
+                            filename=file_name,
+                            headers={'Content-Type': 'application/octet-stream'}
+                        ),
+                        api_client.RequestField(
+                            name='files',
+                            data=file_bytes,
+                            filename=file_name,
+                            headers={'Content-Type': 'application/octet-stream'}
+                        ),
+                    ),
+                    content_type='multipart/form-data'
+                )
+                self.assertEqual(api_response.body, response_json)
+        except petstore_api.ApiException as e:
+            self.fail("upload_file() raised {0} unexpectedly".format(type(e)))
+        finally:
+            file1.close()
+
+        # sending just bytes works also
+        with patch.object(RESTClientObject, 'request') as mock_request:
+            mock_request.return_value = self.__response(
+                self.__json_bytes(response_json)
+            )
+            api_response = self.api.upload_files(body={'files': [file_bytes, file_bytes]})
+            self.__assert_request_called_with(
+                mock_request,
+                'http://petstore.swagger.io:80/v2/fake/uploadFiles',
+                fields=(
+                    api_client.RequestField(
+                        name='files',
+                        data=file_bytes,
+                        headers={'Content-Type': 'application/octet-stream'}
+                    ),
+                    api_client.RequestField(
+                        name='files',
+                        data=file_bytes,
+                        headers={'Content-Type': 'application/octet-stream'}
+                    ),
+                ),
+                content_type='multipart/form-data'
+            )
+            self.assertEqual(api_response.body, response_json)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_format_test.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_format_test.py
new file mode 100644
index 00000000000..91578395317
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_format_test.py
@@ -0,0 +1,134 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+from decimal import Decimal
+import datetime
+import unittest
+
+import petstore_api
+from petstore_api.model.format_test import FormatTest
+from petstore_api.schemas import BinarySchema, BytesSchema, frozendict, Singleton
+
+
+class TestFormatTest(unittest.TestCase):
+    """FormatTest unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_FormatTest(self):
+        """Test FormatTest"""
+
+        required_args = dict(
+            number=32.5,
+            byte='a',
+            date='2021-01-01',
+            password='abcdefghij'
+        )
+        # int32
+        # under min
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(int32=-2147483649, **required_args)
+        # over max
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(int32=2147483648, **required_args)
+        # valid values in range work
+        valid_values = [-2147483648, 2147483647]
+        for valid_value in valid_values:
+            model = FormatTest(int32=valid_value, **required_args)
+            assert model.int32 == valid_value
+
+        # int64
+        # under min
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(int64=-9223372036854775809, **required_args)
+        # over max
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(int64=9223372036854775808, **required_args)
+        # valid values in range work
+        valid_values = [-9223372036854775808, 9223372036854775807]
+        for valid_value in valid_values:
+            model = FormatTest(int64=valid_value, **required_args)
+            assert model.int64 == valid_value
+
+        # float32
+        # under min
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(float32=-3.402823466385289e+38, **required_args)
+        # over max
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(float32=3.402823466385289e+38, **required_args)
+        # valid values in range work
+        valid_values = [-3.4028234663852886e+38, 3.4028234663852886e+38]
+        for valid_value in valid_values:
+            model = FormatTest(float32=valid_value, **required_args)
+            assert model.float32 == valid_value
+
+        # float64
+        # under min, Decimal is used because flat can only store 64bit numbers and the max and min
+        # take up more space than 64bit
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(float64=Decimal('-1.7976931348623157082e+308'), **required_args)
+        # over max
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(float64=Decimal('1.7976931348623157082e+308'), **required_args)
+        valid_values = [-1.7976931348623157E+308, 1.7976931348623157E+308]
+        for valid_value in valid_values:
+            model = FormatTest(float64=valid_value, **required_args)
+            assert model.float64 == valid_value
+
+        # unique_items with duplicates throws exception
+        with self.assertRaises(petstore_api.ApiValueError):
+            model = FormatTest(arrayWithUniqueItems=[0, 1, 1], **required_args)
+        # no duplicates works
+        values = [0, 1, 2]
+        model = FormatTest(arrayWithUniqueItems=values, **required_args)
+        assert model.arrayWithUniqueItems == tuple(values)
+
+        # __bool__ value of noneProp is False
+        model = FormatTest(noneProp=None, **required_args)
+        assert isinstance(model.noneProp, Singleton)
+        self.assertFalse(model.noneProp)
+        self.assertTrue(model.noneProp.is_none())
+
+        # binary check
+        model = FormatTest(binary=b'123', **required_args)
+        assert isinstance(model.binary, BinarySchema)
+        assert isinstance(model.binary, BytesSchema)
+        assert isinstance(model.binary, bytes)
+        assert model == frozendict(
+            binary=b'123',
+            number=Decimal(32.5),
+            byte='a',
+            date='2021-01-01',
+            password='abcdefghij'
+        )
+
+    def test_multiple_of(self):
+        with self.assertRaisesRegex(
+            petstore_api.exceptions.ApiValueError,
+            r"Invalid value `31`, value must be a multiple of `2` at \('args\[0\]', 'integer'\)"
+        ):
+            inst = FormatTest(
+                byte='3',
+                date=datetime.date(2000, 1, 1),
+                password="abcdefghijkl",
+                integer=31,  # Value is supposed to be multiple of '2'. An error must be raised
+                number=65.0,
+                float=62.4
+            )
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fruit.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fruit.py
new file mode 100644
index 00000000000..7d31b94a825
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fruit.py
@@ -0,0 +1,170 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from datetime import date
+import unittest
+
+import petstore_api
+from petstore_api.model import apple
+from petstore_api.model import banana
+from petstore_api.model.fruit import Fruit
+from petstore_api.schemas import Singleton
+
+
+class TestFruit(unittest.TestCase):
+    """Fruit unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testFruit(self):
+        """Test Fruit"""
+
+        # make an instance of Fruit, a composed schema oneOf model
+        # banana test
+        length_cm = 20.3
+        color = 'yellow'
+        fruit = Fruit(lengthCm=length_cm, color=color)
+        # check its properties
+        self.assertEqual(fruit.lengthCm, length_cm)
+        self.assertEqual(fruit['lengthCm'], length_cm)
+        self.assertEqual(fruit.get('lengthCm'), length_cm)
+        self.assertEqual(getattr(fruit, 'lengthCm'), length_cm)
+        self.assertEqual(fruit.color, color)
+        self.assertEqual(fruit['color'], color)
+        self.assertEqual(getattr(fruit, 'color'), color)
+        # check the dict representation
+        self.assertEqual(
+            fruit,
+            {
+                'lengthCm': length_cm,
+                'color': color
+            }
+        )
+        # setting values after instance creation is not allowed
+        with self.assertRaises(TypeError):
+            fruit['color'] = 'some value'
+
+        # Assert that we can call the builtin hasattr() function.
+        # hasattr should return False for non-existent attribute.
+        # Internally hasattr catches the AttributeError exception.
+        self.assertFalse(hasattr(fruit, 'invalid_variable'))
+
+        # Assert that we can call the builtin hasattr() function.
+        # hasattr should return True for existent attribute.
+        self.assertTrue(hasattr(fruit, 'color'))
+
+        # getting a value that doesn't exist raises an exception
+        # with a key
+        with self.assertRaises(KeyError):
+            fruit['cultivar']
+        # with getattr
+        # Per Python doc, if the named attribute does not exist,
+        # default is returned if provided.
+        self.assertEqual(getattr(fruit, 'cultivar', 'some value'), 'some value')
+        self.assertEqual(fruit.get('cultivar'), None)
+        self.assertEqual(fruit.get('cultivar', 'some value'), 'some value')
+
+        # Per Python doc, if the named attribute does not exist,
+        # default is returned if provided, otherwise AttributeError is raised.
+        with self.assertRaises(AttributeError):
+            getattr(fruit, 'cultivar')
+
+        # make sure that the ModelComposed class properties are correct
+        # model._composed_schemas stores the anyOf/allOf/oneOf info
+        self.assertEqual(
+            fruit._composed_schemas,
+            {
+                'anyOf': [],
+                'allOf': [],
+                'oneOf': [
+                    apple.Apple,
+                    banana.Banana,
+                ],
+            }
+        )
+
+        """
+        including extra parameters does not raise an exception
+        because objects support additional properties by default
+        """
+        kwargs = dict(
+            color=color,
+            lengthCm=length_cm,
+            additional_string='some value',
+            additional_date='2021-01-02',
+        )
+
+        fruit = Fruit._from_openapi_data(**kwargs)
+        self.assertEqual(
+            fruit,
+            kwargs
+        )
+
+        fruit = Fruit(**kwargs)
+        self.assertEqual(
+            fruit,
+            kwargs
+        )
+
+        # including input parameters for two oneOf instances raise an exception
+        with self.assertRaises(petstore_api.ApiValueError):
+            Fruit(
+                lengthCm=length_cm,
+                cultivar='granny smith'
+            )
+
+        # make an instance of Fruit, a composed schema oneOf model
+        # apple test
+        color = 'red'
+        cultivar = 'golden delicious'
+        fruit = Fruit(color=color, cultivar=cultivar)
+        # check its properties
+        self.assertEqual(fruit.color, color)
+        self.assertEqual(fruit['color'], color)
+        self.assertEqual(getattr(fruit, 'color'), color)
+        self.assertEqual(fruit.cultivar, cultivar)
+        self.assertEqual(fruit['cultivar'], cultivar)
+        self.assertEqual(getattr(fruit, 'cultivar'), cultivar)
+        # check the dict representation
+        self.assertEqual(
+            fruit,
+            {
+                'color': color,
+                'cultivar': cultivar
+            }
+        )
+
+    def testFruitNullValue(self):
+        # Since 'apple' is nullable, validate we can create an apple with the 'null' value.
+        fruit = apple.Apple(None)
+        assert isinstance(fruit, Singleton)
+        assert isinstance(fruit, apple.Apple)
+        assert fruit.is_none() is True
+
+        # 'banana' is not nullable.
+        # TODO cast this into ApiTypeError?
+        with self.assertRaises(TypeError):
+            banana.Banana(None)
+
+        # Since 'fruit' has oneOf 'apple', 'banana' and 'apple' is nullable,
+        # validate we can create a fruit with the 'null' value.
+        fruit = Fruit(None)
+        assert isinstance(fruit, Singleton)
+        assert isinstance(fruit, apple.Apple)
+        assert isinstance(fruit, Fruit)
+        assert fruit.is_none() is True
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fruit_req.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fruit_req.py
new file mode 100644
index 00000000000..e777e603e1a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_fruit_req.py
@@ -0,0 +1,122 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model import apple_req
+from petstore_api.model import banana_req
+from petstore_api.model.fruit_req import FruitReq
+from petstore_api.schemas import NoneSchema, Singleton
+
+
+class TestFruitReq(unittest.TestCase):
+    """FruitReq unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testFruitReq(self):
+        """Test FruitReq"""
+
+        # make an instance of Fruit, a composed schema oneOf model
+        # banana test
+        length_cm = 20.3
+        fruit = FruitReq(lengthCm=length_cm)
+        # check its properties
+        self.assertEqual(fruit.lengthCm, length_cm)
+        self.assertEqual(fruit['lengthCm'], length_cm)
+        self.assertEqual(getattr(fruit, 'lengthCm'), length_cm)
+        # check the dict representation
+        self.assertEqual(
+            fruit,
+            {
+                'lengthCm': length_cm,
+            }
+        )
+        # setting values after instance creation is not allowed
+        with self.assertRaises(TypeError):
+            fruit['lengthCm'] = 'some value'
+
+        # setting values after instance creation is not allowed
+        with self.assertRaises(AttributeError):
+            setattr(fruit, 'lengthCm', 'some value')
+
+        # getting a value that doesn't exist raises an exception
+        # with a key
+        with self.assertRaises(KeyError):
+            invalid_variable = fruit['cultivar']
+
+        # with getattr
+        self.assertEqual(getattr(fruit, 'cultivar', 'some value'), 'some value')
+
+        with self.assertRaises(AttributeError):
+            getattr(fruit, 'cultivar')
+
+        # make sure that the ModelComposed class properties are correct
+        # model._composed_schemas stores the anyOf/allOf/oneOf info
+        self.assertEqual(
+            fruit._composed_schemas,
+            {
+                'anyOf': [],
+                'allOf': [],
+                'oneOf': [
+                    NoneSchema,
+                    apple_req.AppleReq,
+                    banana_req.BananaReq,
+                ],
+            }
+        )
+
+        # including extra parameters raises an exception
+        with self.assertRaises(petstore_api.ApiValueError):
+            fruit = FruitReq(
+                length_cm=length_cm,
+                unknown_property='some value'
+            )
+
+        # including input parameters for two oneOf instances raise an exception
+        with self.assertRaises(petstore_api.ApiValueError):
+            fruit = FruitReq(
+                length_cm=length_cm,
+                cultivar='granny smith'
+            )
+
+        # make an instance of Fruit, a composed schema oneOf model
+        # apple test
+        cultivar = 'golden delicious'
+        fruit = FruitReq(cultivar=cultivar)
+        # check its properties
+        self.assertEqual(fruit.cultivar, cultivar)
+        self.assertEqual(fruit['cultivar'], cultivar)
+        self.assertEqual(getattr(fruit, 'cultivar'), cultivar)
+        # check the dict representation
+        self.assertEqual(
+            fruit,
+            {
+                'cultivar': cultivar
+            }
+        )
+
+        # we can pass in None
+        fruit = FruitReq(None)
+        assert isinstance(fruit, Singleton)
+        assert isinstance(fruit, FruitReq)
+        assert isinstance(fruit, NoneSchema)
+        assert fruit.is_none() is True
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_gm_fruit.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_gm_fruit.py
new file mode 100644
index 00000000000..6d27f7c9dab
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_gm_fruit.py
@@ -0,0 +1,135 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model import apple
+from petstore_api.model import banana
+from petstore_api.model.gm_fruit import GmFruit
+from petstore_api.schemas import frozendict
+
+class TestGmFruit(unittest.TestCase):
+    """GmFruit unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testGmFruit(self):
+        """Test GmFruit"""
+
+        # make an instance of GmFruit, a composed schema anyOf model
+        # banana test
+        length_cm = 20.3
+        color = 'yellow'
+        cultivar = 'banaple'
+        fruit = GmFruit(lengthCm=length_cm, color=color, cultivar=cultivar)
+        assert isinstance(fruit, GmFruit)
+        assert isinstance(fruit, banana.Banana)
+        assert isinstance(fruit, apple.Apple)
+        assert isinstance(fruit, frozendict)
+        # check its properties
+        self.assertEqual(fruit.lengthCm, length_cm)
+        self.assertEqual(fruit['lengthCm'], length_cm)
+        self.assertEqual(getattr(fruit, 'lengthCm'), length_cm)
+        self.assertEqual(fruit.color, color)
+        self.assertEqual(fruit['color'], color)
+        self.assertEqual(getattr(fruit, 'color'), color)
+        # check the dict representation
+        self.assertEqual(
+            fruit,
+            {
+                'lengthCm': length_cm,
+                'color': color,
+                'cultivar': cultivar
+            }
+        )
+
+        with self.assertRaises(KeyError):
+            invalid_variable = fruit['origin']
+        # with getattr
+        self.assertTrue(getattr(fruit, 'origin', 'some value'), 'some value')
+
+        # make sure that the ModelComposed class properties are correct
+        # model._composed_schemas stores the anyOf/allOf/oneOf info
+        self.assertEqual(
+            fruit._composed_schemas,
+            {
+                'anyOf': [
+                    apple.Apple,
+                    banana.Banana,
+                ],
+                'allOf': [],
+                'oneOf': [],
+            }
+        )
+
+        # including extra parameters works
+        fruit = GmFruit(
+            color=color,
+            length_cm=length_cm,
+            cultivar=cultivar,
+            unknown_property='some value'
+        )
+
+        # including input parameters for both anyOf instances works
+        color = 'orange'
+        color_stored = b'orange'
+        fruit = GmFruit(
+            color=color,
+            cultivar=cultivar,
+            length_cm=length_cm
+        )
+        self.assertEqual(fruit.color, color)
+        self.assertEqual(fruit['color'], color)
+        self.assertEqual(getattr(fruit, 'color'), color)
+        self.assertEqual(fruit.cultivar, cultivar)
+        self.assertEqual(fruit['cultivar'], cultivar)
+        self.assertEqual(getattr(fruit, 'cultivar'), cultivar)
+        self.assertEqual(fruit.length_cm, length_cm)
+        self.assertEqual(fruit['length_cm'], length_cm)
+        self.assertEqual(getattr(fruit, 'length_cm'), length_cm)
+
+        # make an instance of GmFruit, a composed schema anyOf model
+        # apple test
+        color = 'red'
+        cultivar = 'golden delicious'
+        origin = 'California'
+        fruit = GmFruit(color=color, cultivar=cultivar, origin=origin)
+        # check its properties
+        self.assertEqual(fruit.color, color)
+        self.assertEqual(fruit['color'], color)
+        self.assertEqual(getattr(fruit, 'color'), color)
+        self.assertEqual(fruit.cultivar, cultivar)
+        self.assertEqual(fruit['cultivar'], cultivar)
+        self.assertEqual(getattr(fruit, 'cultivar'), cultivar)
+
+        self.assertEqual(fruit.origin, origin)
+        self.assertEqual(fruit['origin'], origin)
+        self.assertEqual(getattr(fruit, 'origin'), origin)
+
+        # check the dict representation
+        self.assertEqual(
+            fruit,
+            {
+                'color': color,
+                'cultivar': cultivar,
+                'origin': origin,
+            }
+        )
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_http_signature.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_http_signature.py
new file mode 100644
index 00000000000..9783829e30b
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_http_signature.py
@@ -0,0 +1,518 @@
+# # coding: utf-8
+#
+# # flake8: noqa
+#
+# """
+# Run the tests.
+# $ docker pull swaggerapi/petstore
+# $ docker run -d -e SWAGGER_HOST=http://petstore.swagger.io -e SWAGGER_BASE_PATH=/v2 -p 80:8080 swaggerapi/petstore
+# $ pip install nose (optional)
+# $ cd petstore_api-python
+# $ nosetests -v
+# """
+#
+# from collections import namedtuple
+# from datetime import datetime, timedelta
+# import base64
+# import json
+# import os
+# import re
+# import shutil
+# import unittest
+# from urllib.parse import urlencode, urlparse
+#
+# from Crypto.Hash import SHA256, SHA512
+# from Crypto.PublicKey import ECC, RSA
+# from Crypto.Signature import pkcs1_15, pss, DSS
+#
+# import petstore_api
+# from petstore_api.model import category, tag, pet
+# from petstore_api.api.pet_api import PetApi
+# from petstore_api import Configuration, signing
+# from petstore_api.rest import (
+#     RESTClientObject,
+#     RESTResponse
+# )
+#
+# from petstore_api.exceptions import (
+#     ApiException,
+#     ApiValueError,
+#     ApiTypeError,
+# )
+#
+# from .util import id_gen
+#
+# import urllib3
+#
+# from unittest.mock import patch
+#
+# HOST = 'http://localhost/v2'
+#
+# # This test RSA private key below is published in Appendix C 'Test Values' of
+# # https://www.ietf.org/id/draft-cavage-http-signatures-12.txt
+# RSA_TEST_PRIVATE_KEY = """-----BEGIN RSA PRIVATE KEY-----
+# MIICXgIBAAKBgQDCFENGw33yGihy92pDjZQhl0C36rPJj+CvfSC8+q28hxA161QF
+# NUd13wuCTUcq0Qd2qsBe/2hFyc2DCJJg0h1L78+6Z4UMR7EOcpfdUE9Hf3m/hs+F
+# UR45uBJeDK1HSFHD8bHKD6kv8FPGfJTotc+2xjJwoYi+1hqp1fIekaxsyQIDAQAB
+# AoGBAJR8ZkCUvx5kzv+utdl7T5MnordT1TvoXXJGXK7ZZ+UuvMNUCdN2QPc4sBiA
+# QWvLw1cSKt5DsKZ8UETpYPy8pPYnnDEz2dDYiaew9+xEpubyeW2oH4Zx71wqBtOK
+# kqwrXa/pzdpiucRRjk6vE6YY7EBBs/g7uanVpGibOVAEsqH1AkEA7DkjVH28WDUg
+# f1nqvfn2Kj6CT7nIcE3jGJsZZ7zlZmBmHFDONMLUrXR/Zm3pR5m0tCmBqa5RK95u
+# 412jt1dPIwJBANJT3v8pnkth48bQo/fKel6uEYyboRtA5/uHuHkZ6FQF7OUkGogc
+# mSJluOdc5t6hI1VsLn0QZEjQZMEOWr+wKSMCQQCC4kXJEsHAve77oP6HtG/IiEn7
+# kpyUXRNvFsDE0czpJJBvL/aRFUJxuRK91jhjC68sA7NsKMGg5OXb5I5Jj36xAkEA
+# gIT7aFOYBFwGgQAQkWNKLvySgKbAZRTeLBacpHMuQdl1DfdntvAyqpAZ0lY0RKmW
+# G6aFKaqQfOXKCyWoUiVknQJAXrlgySFci/2ueKlIE1QqIiLSZ8V8OlpFLRnb1pzI
+# 7U1yQXnTAEFYM560yJlzUpOb1V4cScGd365tiSMvxLOvTA==
+# -----END RSA PRIVATE KEY-----"""
+#
+#
+# class TimeoutWithEqual(urllib3.Timeout):
+#     def __init__(self, *arg, **kwargs):
+#         super(TimeoutWithEqual, self).__init__(*arg, **kwargs)
+#
+#     def __eq__(self, other):
+#         return self._read == other._read and self._connect == other._connect and self.total == other.total
+#
+# class MockPoolManager(object):
+#     def __init__(self, tc):
+#         self._tc = tc
+#         self._reqs = []
+#
+#     def expect_request(self, *args, **kwargs):
+#         self._reqs.append((args, kwargs))
+#
+#     def set_signing_config(self, signing_cfg):
+#         self.signing_cfg = signing_cfg
+#         self._tc.assertIsNotNone(self.signing_cfg)
+#         self.pubkey = self.signing_cfg.get_public_key()
+#         self._tc.assertIsNotNone(self.pubkey)
+#
+#     def request(self, *actual_request_target, **actual_request_headers_and_body):
+#         self._tc.assertTrue(len(self._reqs) > 0)
+#         expected_results = self._reqs.pop(0)
+#         self._tc.maxDiff = None
+#         expected_request_target = expected_results[0] # The expected HTTP method and URL path.
+#         expected_request_headers_and_body = expected_results[1] # dict that contains the expected body, headers
+#         self._tc.assertEqual(expected_request_target, actual_request_target)
+#         # actual_request_headers_and_body is a dict that contains the actual body, headers
+#         for k, expected in expected_request_headers_and_body.items():
+#             self._tc.assertIn(k, actual_request_headers_and_body)
+#             if k == 'body':
+#                 actual_body = actual_request_headers_and_body[k]
+#                 self._tc.assertEqual(expected, actual_body)
+#             elif k == 'headers':
+#                 actual_headers = actual_request_headers_and_body[k]
+#                 for expected_header_name, expected_header_value in expected.items():
+#                     # Validate the generated request contains the expected header.
+#                     self._tc.assertIn(expected_header_name, actual_headers)
+#                     actual_header_value = actual_headers[expected_header_name]
+#                     # Compare the actual value of the header against the expected value.
+#                     pattern = re.compile(expected_header_value)
+#                     m = pattern.match(actual_header_value)
+#                     self._tc.assertTrue(m, msg="Expected:\n{0}\nActual:\n{1}".format(
+#                                 expected_header_value,actual_header_value))
+#                     if expected_header_name == 'Authorization':
+#                         self._validate_authorization_header(
+#                             expected_request_target, actual_headers, actual_header_value)
+#             elif k == 'timeout':
+#                 self._tc.assertEqual(expected, actual_request_headers_and_body[k])
+#         return urllib3.HTTPResponse(status=200, body=b'test')
+#
+#     def _validate_authorization_header(self, request_target, actual_headers, authorization_header):
+#         """Validate the signature.
+#         """
+#         # Extract (created)
+#         r1 = re.compile(r'created=([0-9]+)')
+#         m1 = r1.search(authorization_header)
+#         self._tc.assertIsNotNone(m1)
+#         created = m1.group(1)
+#
+#         # Extract list of signed headers
+#         r1 = re.compile(r'headers="([^"]+)"')
+#         m1 = r1.search(authorization_header)
+#         self._tc.assertIsNotNone(m1)
+#         headers = m1.group(1).split(' ')
+#         signed_headers_list = []
+#         for h in headers:
+#             if h == '(created)':
+#                 signed_headers_list.append((h, created))
+#             elif h == '(request-target)':
+#                 url = request_target[1]
+#                 target_path = urlparse(url).path
+#                 signed_headers_list.append((h, "{0} {1}".format(request_target[0].lower(), target_path)))
+#             else:
+#                 value = next((v for k, v in actual_headers.items() if k.lower() == h), None)
+#                 self._tc.assertIsNotNone(value)
+#                 signed_headers_list.append((h, value))
+#         header_items = [
+#             "{0}: {1}".format(key.lower(), value) for key, value in signed_headers_list]
+#         string_to_sign = "\n".join(header_items)
+#         digest = None
+#         if self.signing_cfg.hash_algorithm == signing.HASH_SHA512:
+#             digest = SHA512.new()
+#         elif self.signing_cfg.hash_algorithm == signing.HASH_SHA256:
+#             digest = SHA256.new()
+#         else:
+#             self._tc.fail("Unsupported hash algorithm: {0}".format(self.signing_cfg.hash_algorithm))
+#         digest.update(string_to_sign.encode())
+#         b64_body_digest = base64.b64encode(digest.digest()).decode()
+#
+#         # Extract the signature
+#         r2 = re.compile(r'signature="([^"]+)"')
+#         m2 = r2.search(authorization_header)
+#         self._tc.assertIsNotNone(m2)
+#         b64_signature = m2.group(1)
+#         signature = base64.b64decode(b64_signature)
+#         # Build the message
+#         signing_alg = self.signing_cfg.signing_algorithm
+#         if signing_alg is None:
+#             # Determine default
+#             if isinstance(self.pubkey, RSA.RsaKey):
+#                 signing_alg = signing.ALGORITHM_RSASSA_PSS
+#             elif isinstance(self.pubkey, ECC.EccKey):
+#                 signing_alg = signing.ALGORITHM_ECDSA_MODE_FIPS_186_3
+#             else:
+#                 self._tc.fail("Unsupported key: {0}".format(type(self.pubkey)))
+#
+#         if signing_alg == signing.ALGORITHM_RSASSA_PKCS1v15:
+#             pkcs1_15.new(self.pubkey).verify(digest, signature)
+#         elif signing_alg == signing.ALGORITHM_RSASSA_PSS:
+#             pss.new(self.pubkey).verify(digest, signature)
+#         elif signing_alg == signing.ALGORITHM_ECDSA_MODE_FIPS_186_3:
+#             verifier = DSS.new(key=self.pubkey, mode=signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
+#                                 encoding='der')
+#             verifier.verify(digest, signature)
+#         elif signing_alg == signing.ALGORITHM_ECDSA_MODE_DETERMINISTIC_RFC6979:
+#             verifier = DSS.new(key=self.pubkey, mode=signing.ALGORITHM_ECDSA_MODE_DETERMINISTIC_RFC6979,
+#                                 encoding='der')
+#             verifier.verify(digest, signature)
+#         else:
+#             self._tc.fail("Unsupported signing algorithm: {0}".format(signing_alg))
+#
+# class PetApiTests(unittest.TestCase):
+#
+#     @classmethod
+#     def setUpClass(cls):
+#         cls.setUpModels()
+#         cls.setUpFiles()
+#
+#     @classmethod
+#     def tearDownClass(cls):
+#         file_paths = [
+#             cls.rsa_key_path,
+#             cls.rsa4096_key_path,
+#             cls.ec_p521_key_path,
+#         ]
+#         for file_path in file_paths:
+#             os.unlink(file_path)
+#
+#     @classmethod
+#     def setUpModels(cls):
+#         cls.category = category.Category()
+#         cls.category.id = id_gen()
+#         cls.category.name = "dog"
+#         cls.tag = tag.Tag()
+#         cls.tag.id = id_gen()
+#         cls.tag.name = "python-pet-tag"
+#         cls.pet = pet.Pet(
+#             name="hello kity",
+#             photo_urls=["http://foo.bar.com/1", "http://foo.bar.com/2"]
+#         )
+#         cls.pet.id = id_gen()
+#         cls.pet.status = "sold"
+#         cls.pet.category = cls.category
+#         cls.pet.tags = [cls.tag]
+#
+#     @classmethod
+#     def setUpFiles(cls):
+#         cls.test_file_dir = os.path.join(
+#             os.path.dirname(__file__), "..", "testfiles")
+#         cls.test_file_dir = os.path.realpath(cls.test_file_dir)
+#         if not os.path.exists(cls.test_file_dir):
+#             os.mkdir(cls.test_file_dir)
+#
+#         cls.private_key_passphrase = 'test-passphrase'
+#         cls.rsa_key_path = os.path.join(cls.test_file_dir, 'rsa.pem')
+#         cls.rsa4096_key_path = os.path.join(cls.test_file_dir, 'rsa4096.pem')
+#         cls.ec_p521_key_path = os.path.join(cls.test_file_dir, 'ecP521.pem')
+#
+#         if not os.path.exists(cls.rsa_key_path):
+#             with open(cls.rsa_key_path, 'w') as f:
+#                 f.write(RSA_TEST_PRIVATE_KEY)
+#
+#         if not os.path.exists(cls.rsa4096_key_path):
+#             key = RSA.generate(4096)
+#             private_key = key.export_key(
+#                 passphrase=cls.private_key_passphrase,
+#                 protection='PEM'
+#             )
+#             with open(cls.rsa4096_key_path, "wb") as f:
+#                 f.write(private_key)
+#
+#         if not os.path.exists(cls.ec_p521_key_path):
+#             key = ECC.generate(curve='P-521')
+#             private_key = key.export_key(
+#                 format='PEM',
+#                 passphrase=cls.private_key_passphrase,
+#                 use_pkcs8=True,
+#                 protection='PBKDF2WithHMAC-SHA1AndAES128-CBC'
+#             )
+#             with open(cls.ec_p521_key_path, "wt") as f:
+#                 f.write(private_key)
+#
+#     def test_valid_http_signature(self):
+#         privkey_path = self.rsa_key_path
+#         signing_cfg = signing.HttpSigningConfiguration(
+#             key_id="my-key-id",
+#             signing_scheme=signing.SCHEME_HS2019,
+#             private_key_path=privkey_path,
+#             private_key_passphrase=self.private_key_passphrase,
+#             signing_algorithm=signing.ALGORITHM_RSASSA_PKCS1v15,
+#             signed_headers=[
+#                 signing.HEADER_REQUEST_TARGET,
+#                 signing.HEADER_CREATED,
+#                 signing.HEADER_HOST,
+#                 signing.HEADER_DATE,
+#                 signing.HEADER_DIGEST,
+#                 'Content-Type'
+#             ]
+#         )
+#         config = Configuration(host=HOST, signing_info=signing_cfg)
+#         # Set the OAuth2 acces_token to None. Here we are interested in testing
+#         # the HTTP signature scheme.
+#         config.access_token = None
+#
+#         api_client = petstore_api.ApiClient(config)
+#         pet_api = PetApi(api_client)
+#
+#         mock_pool = MockPoolManager(self)
+#         api_client.rest_client.pool_manager = mock_pool
+#
+#         mock_pool.set_signing_config(signing_cfg)
+#         mock_pool.expect_request('POST', HOST + '/pet',
+#                                  body=json.dumps(api_client.sanitize_for_serialization(self.pet)),
+#                                  headers={'Content-Type': r'application/json',
+#                                           'Authorization': r'Signature keyId="my-key-id",algorithm="hs2019",created=[0-9]+,'
+#                                                 r'headers="\(request-target\) \(created\) host date digest content-type",'
+#                                                 r'signature="[a-zA-Z0-9+/=]+"',
+#                                           'User-Agent': r'OpenAPI-Generator/1.0.0/python'},
+#                                  preload_content=True, timeout=None)
+#
+#         pet_api.add_pet(self.pet)
+#
+#     def test_valid_http_signature_with_defaults(self):
+#         privkey_path = self.rsa4096_key_path
+#         signing_cfg = signing.HttpSigningConfiguration(
+#             key_id="my-key-id",
+#             signing_scheme=signing.SCHEME_HS2019,
+#             private_key_path=privkey_path,
+#             private_key_passphrase=self.private_key_passphrase,
+#         )
+#         config = Configuration(host=HOST, signing_info=signing_cfg)
+#         # Set the OAuth2 acces_token to None. Here we are interested in testing
+#         # the HTTP signature scheme.
+#         config.access_token = None
+#
+#         api_client = petstore_api.ApiClient(config)
+#         pet_api = PetApi(api_client)
+#
+#         mock_pool = MockPoolManager(self)
+#         api_client.rest_client.pool_manager = mock_pool
+#
+#         mock_pool.set_signing_config(signing_cfg)
+#         mock_pool.expect_request('POST', HOST + '/pet',
+#                                  body=json.dumps(api_client.sanitize_for_serialization(self.pet)),
+#                                  headers={'Content-Type': r'application/json',
+#                                           'Authorization': r'Signature keyId="my-key-id",algorithm="hs2019",created=[0-9]+,'
+#                                                 r'headers="\(created\)",'
+#                                                 r'signature="[a-zA-Z0-9+/=]+"',
+#                                           'User-Agent': r'OpenAPI-Generator/1.0.0/python'},
+#                                  preload_content=True, timeout=None)
+#
+#         pet_api.add_pet(self.pet)
+#
+#     def test_valid_http_signature_rsassa_pkcs1v15(self):
+#         privkey_path = self.rsa4096_key_path
+#         signing_cfg = signing.HttpSigningConfiguration(
+#             key_id="my-key-id",
+#             signing_scheme=signing.SCHEME_HS2019,
+#             private_key_path=privkey_path,
+#             private_key_passphrase=self.private_key_passphrase,
+#             signing_algorithm=signing.ALGORITHM_RSASSA_PKCS1v15,
+#             signed_headers=[
+#                 signing.HEADER_REQUEST_TARGET,
+#                 signing.HEADER_CREATED,
+#             ]
+#         )
+#         config = Configuration(host=HOST, signing_info=signing_cfg)
+#         # Set the OAuth2 acces_token to None. Here we are interested in testing
+#         # the HTTP signature scheme.
+#         config.access_token = None
+#
+#         api_client = petstore_api.ApiClient(config)
+#         pet_api = PetApi(api_client)
+#
+#         mock_pool = MockPoolManager(self)
+#         api_client.rest_client.pool_manager = mock_pool
+#
+#         mock_pool.set_signing_config(signing_cfg)
+#         mock_pool.expect_request('POST', HOST + '/pet',
+#                                  body=json.dumps(api_client.sanitize_for_serialization(self.pet)),
+#                                  headers={'Content-Type': r'application/json',
+#                                           'Authorization': r'Signature keyId="my-key-id",algorithm="hs2019",created=[0-9]+,'
+#                                                 r'headers="\(request-target\) \(created\)",'
+#                                                 r'signature="[a-zA-Z0-9+/=]+"',
+#                                           'User-Agent': r'OpenAPI-Generator/1.0.0/python'},
+#                                  preload_content=True, timeout=None)
+#
+#         pet_api.add_pet(self.pet)
+#
+#     def test_valid_http_signature_rsassa_pss(self):
+#         privkey_path = self.rsa4096_key_path
+#         signing_cfg = signing.HttpSigningConfiguration(
+#             key_id="my-key-id",
+#             signing_scheme=signing.SCHEME_HS2019,
+#             private_key_path=privkey_path,
+#             private_key_passphrase=self.private_key_passphrase,
+#             signing_algorithm=signing.ALGORITHM_RSASSA_PSS,
+#             signed_headers=[
+#                 signing.HEADER_REQUEST_TARGET,
+#                 signing.HEADER_CREATED,
+#             ]
+#         )
+#         config = Configuration(host=HOST, signing_info=signing_cfg)
+#         # Set the OAuth2 acces_token to None. Here we are interested in testing
+#         # the HTTP signature scheme.
+#         config.access_token = None
+#
+#         api_client = petstore_api.ApiClient(config)
+#         pet_api = PetApi(api_client)
+#
+#         mock_pool = MockPoolManager(self)
+#         api_client.rest_client.pool_manager = mock_pool
+#
+#         mock_pool.set_signing_config(signing_cfg)
+#         mock_pool.expect_request('POST', HOST + '/pet',
+#                                  body=json.dumps(api_client.sanitize_for_serialization(self.pet)),
+#                                  headers={'Content-Type': r'application/json',
+#                                           'Authorization': r'Signature keyId="my-key-id",algorithm="hs2019",created=[0-9]+,'
+#                                                 r'headers="\(request-target\) \(created\)",'
+#                                                 r'signature="[a-zA-Z0-9+/=]+"',
+#                                           'User-Agent': r'OpenAPI-Generator/1.0.0/python'},
+#                                  preload_content=True, timeout=None)
+#
+#         pet_api.add_pet(self.pet)
+#
+#     def test_valid_http_signature_ec_p521(self):
+#         privkey_path = self.ec_p521_key_path
+#         signing_cfg = signing.HttpSigningConfiguration(
+#             key_id="my-key-id",
+#             signing_scheme=signing.SCHEME_HS2019,
+#             private_key_path=privkey_path,
+#             private_key_passphrase=self.private_key_passphrase,
+#             hash_algorithm=signing.HASH_SHA512,
+#             signed_headers=[
+#                 signing.HEADER_REQUEST_TARGET,
+#                 signing.HEADER_CREATED,
+#             ]
+#         )
+#         config = Configuration(host=HOST, signing_info=signing_cfg)
+#         # Set the OAuth2 acces_token to None. Here we are interested in testing
+#         # the HTTP signature scheme.
+#         config.access_token = None
+#
+#         api_client = petstore_api.ApiClient(config)
+#         pet_api = PetApi(api_client)
+#
+#         mock_pool = MockPoolManager(self)
+#         api_client.rest_client.pool_manager = mock_pool
+#
+#         mock_pool.set_signing_config(signing_cfg)
+#         mock_pool.expect_request('POST', HOST + '/pet',
+#                                  body=json.dumps(api_client.sanitize_for_serialization(self.pet)),
+#                                  headers={'Content-Type': r'application/json',
+#                                           'Authorization': r'Signature keyId="my-key-id",algorithm="hs2019",created=[0-9]+,'
+#                                                 r'headers="\(request-target\) \(created\)",'
+#                                                 r'signature="[a-zA-Z0-9+/=]+"',
+#                                           'User-Agent': r'OpenAPI-Generator/1.0.0/python'},
+#                                  preload_content=True, timeout=None)
+#
+#         pet_api.add_pet(self.pet)
+#
+#     def test_invalid_configuration(self):
+#         # Signing scheme must be valid.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 signing_scheme='foo',
+#                 private_key_path=self.ec_p521_key_path
+#             )
+#         self.assertTrue(re.match('Unsupported security scheme', str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#         # Signing scheme must be specified.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 private_key_path=self.ec_p521_key_path,
+#                 signing_scheme=None
+#             )
+#         self.assertTrue(re.match('Unsupported security scheme', str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#         # Private key passphrase is missing but key is encrypted.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 signing_scheme=signing.SCHEME_HS2019,
+#                 private_key_path=self.ec_p521_key_path,
+#             )
+#         self.assertTrue(re.match('Not a valid clear PKCS#8 structure', str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#         # File containing private key must exist.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 signing_scheme=signing.SCHEME_HS2019,
+#                 private_key_path='foobar',
+#             )
+#         self.assertTrue(re.match('Private key file does not exist', str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#         # The max validity must be a positive value.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 signing_scheme=signing.SCHEME_HS2019,
+#                 private_key_path=self.ec_p521_key_path,
+#                 signature_max_validity=timedelta(hours=-1)
+#             )
+#         self.assertTrue(re.match('The signature max validity must be a positive value',
+#                                 str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#         # Cannot include the 'Authorization' header.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 signing_scheme=signing.SCHEME_HS2019,
+#                 private_key_path=self.ec_p521_key_path,
+#                 signed_headers=['Authorization']
+#             )
+#         self.assertTrue(re.match("'Authorization' header cannot be included", str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
+#         # Cannot specify duplicate headers.
+#         with self.assertRaises(Exception) as cm:
+#             signing_cfg = signing.HttpSigningConfiguration(
+#                 key_id="my-key-id",
+#                 signing_scheme=signing.SCHEME_HS2019,
+#                 private_key_path=self.ec_p521_key_path,
+#                 signed_headers=['Host', 'Date', 'Host']
+#             )
+#         self.assertTrue(re.match('Cannot have duplicates in the signed_headers parameter',
+#                                 str(cm.exception)),
+#             'Exception message: {0}'.format(str(cm.exception)))
+#
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_integer_enum_one_value.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_integer_enum_one_value.py
new file mode 100644
index 00000000000..a5d92cd0833
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_integer_enum_one_value.py
@@ -0,0 +1,55 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.integer_enum_one_value import IntegerEnumOneValue
+
+
+class TestIntegerEnumOneValue(unittest.TestCase):
+    """IntegerEnumOneValue unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testIntegerEnumOneValue(self):
+        """Test IntegerEnumOneValue"""
+
+        with self.assertRaises(TypeError):
+            """
+            a value must be passed in
+            We cannot auto assign values because that would break composition if
+            received payloads included this with no inputs and we the 0 value to the data to the incoming payload
+            One is not allowed to mutate incoming payloads because then:
+            - order of composed schema ingestion matters
+            - one can have default value collisions
+            - the added data will make expected schemas not match payloads
+            """
+            model = IntegerEnumOneValue()
+
+        model = IntegerEnumOneValue(0)
+        assert model == 0, "We can also pass in the value as a positional arg"
+
+        # one cannot pass the value with the value keyword
+        with self.assertRaises(TypeError):
+            model = IntegerEnumOneValue(value=0)
+
+        # one can pass in the enum value
+        model = IntegerEnumOneValue(IntegerEnumOneValue.POSITIVE_0)
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_json_encoder.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_json_encoder.py
new file mode 100644
index 00000000000..45cce4c0f02
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_json_encoder.py
@@ -0,0 +1,50 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from datetime import date
+import unittest
+
+import petstore_api
+from petstore_api import schemas
+from petstore_api import api_client
+
+
+class TestJSONEncoder(unittest.TestCase):
+    """Fruit unit test stubs"""
+    serializer = api_client.JSONEncoder()
+
+    def test_receive_encode_str_types(self):
+        schema_to_value = {
+            schemas.StrSchema: 'hi',
+            schemas.DateSchema: '2021-05-09',
+            schemas.DateTimeSchema: '2020-01-01T00:00:00'
+        }
+        for schema, value in schema_to_value.items():
+            inst = schema._from_openapi_data(value)
+            assert value == self.serializer.default(inst)
+
+    def test_receive_encode_numeric_types(self):
+        value_to_schema = {
+            1: schemas.IntSchema,
+            1.0: schemas.Float32Schema,
+            3.14: schemas.Float32Schema,
+            4: schemas.NumberSchema,
+            4.0: schemas.NumberSchema,
+            7.14: schemas.NumberSchema,
+        }
+        for value, schema in value_to_schema.items():
+            inst = schema._from_openapi_data(value)
+            pre_serialize_value = self.serializer.default(inst)
+            assert value == pre_serialize_value and type(value) == type(pre_serialize_value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_mammal.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_mammal.py
new file mode 100644
index 00000000000..9101280fc66
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_mammal.py
@@ -0,0 +1,55 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.mammal import Mammal
+
+
+class TestMammal(unittest.TestCase):
+    """Mammal unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testMammal(self):
+        """Test Mammal"""
+
+        # tests that we can make a BasquePig by traveling through discriminator in Pig
+        m = Mammal(className="BasquePig")
+        from petstore_api.model import pig
+        from petstore_api.model import basque_pig
+        assert isinstance(m, Mammal)
+        assert isinstance(m, basque_pig.BasquePig)
+        assert isinstance(m, pig.Pig)
+
+        # can make a Whale
+        m = Mammal(className="whale")
+        from petstore_api.model import whale
+        assert isinstance(m, whale.Whale)
+
+        # can use the enum value
+        m = Mammal(className=whale.Whale.className.WHALE)
+        assert isinstance(m, whale.Whale)
+
+        from petstore_api.model import zebra
+        m = Mammal(className='zebra')
+        assert isinstance(m, zebra.Zebra)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_money.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_money.py
new file mode 100644
index 00000000000..a4bd764cc87
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_money.py
@@ -0,0 +1,34 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+import decimal
+import unittest
+
+from petstore_api.model.money import Money
+
+
+class TestMoney(unittest.TestCase):
+    """Money unit test stubs"""
+
+    def test_Money(self):
+        """Test Money"""
+        price = Money(
+            currency='usd',
+            amount='10.99'
+        )
+        self.assertEqual(price.amount.as_decimal, decimal.Decimal('10.99'))
+        self.assertEqual(
+            price,
+            dict(currency='usd', amount='10.99')
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_no_additional_properties.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_no_additional_properties.py
new file mode 100644
index 00000000000..7aff4811327
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_no_additional_properties.py
@@ -0,0 +1,64 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.no_additional_properties import NoAdditionalProperties
+
+
+class TestNoAdditionalProperties(unittest.TestCase):
+    """NoAdditionalProperties unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testNoAdditionalProperties(self):
+        """Test NoAdditionalProperties"""
+
+        # works with only required
+        inst = NoAdditionalProperties(id=1)
+
+        # works with required + optional
+        inst = NoAdditionalProperties(id=1, petId=2)
+
+        # needs required
+        # TODO cast this to ApiTypeError?
+        with self.assertRaisesRegex(
+            TypeError,
+            r"missing 1 required keyword-only argument: 'id'"
+        ):
+            NoAdditionalProperties(petId=2)
+
+        # may not be passed additional properties
+        # TODO cast this to ApiTypeError?
+        with self.assertRaisesRegex(
+            TypeError,
+            r"got an unexpected keyword argument 'invalidArg'"
+        ):
+            NoAdditionalProperties(id=2, invalidArg=2)
+
+        # plural example
+        # TODO cast this to ApiTypeError?
+        with self.assertRaisesRegex(
+            TypeError,
+            r"got an unexpected keyword argument 'firstInvalidArg'"
+        ):
+            NoAdditionalProperties(id=2, firstInvalidArg=1, secondInvalidArg=1)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_nullable_string.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_nullable_string.py
new file mode 100644
index 00000000000..2a704a70846
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_nullable_string.py
@@ -0,0 +1,54 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.nullable_string import NullableString
+from petstore_api.schemas import Schema, Singleton
+
+
+class TestNullableString(unittest.TestCase):
+    """NullableString unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testNullableString(self):
+        """Test NullableString"""
+        inst = NullableString(None)
+        assert isinstance(inst, Singleton)
+        assert isinstance(inst, NullableString)
+        assert isinstance(inst, Schema)
+        assert inst.is_none() is True
+
+        inst = NullableString('approved')
+        assert isinstance(inst, NullableString)
+        assert isinstance(inst, Schema)
+        assert isinstance(inst, str)
+        assert inst == 'approved'
+
+        invalid_values = [1]
+        for invalid_value in invalid_values:
+            with self.assertRaisesRegex(
+                petstore_api.ApiTypeError,
+                r"Invalid type. Required value type is one of \[NoneType, str\] and passed type was Decimal at \['args\[0\]'\]"
+            ):
+                NullableString(invalid_value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_number_with_validations.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_number_with_validations.py
new file mode 100644
index 00000000000..5cf1dfaa9c5
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_number_with_validations.py
@@ -0,0 +1,46 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.number_with_validations import NumberWithValidations
+
+
+class TestNumberWithValidations(unittest.TestCase):
+    """NumberWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testNumberWithValidations(self):
+        """Test NumberWithValidations"""
+        valid_values = [10.0, 15.0, 20.0]
+        for valid_value in valid_values:
+            model = NumberWithValidations(valid_value)
+            assert model == valid_value
+
+        value_error_msg_pairs = (
+            (9.0, r"Invalid value `9.0`, must be a value greater than or equal to `10` at \('args\[0\]',\)"),
+            (21.0, r"Invalid value `21.0`, must be a value less than or equal to `20` at \('args\[0\]',\)"),
+        )
+        for invalid_value, error_msg in value_error_msg_pairs:
+            with self.assertRaisesRegex(petstore_api.ApiValueError, error_msg):
+                NumberWithValidations(invalid_value)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_model_with_ref_props.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_model_with_ref_props.py
new file mode 100644
index 00000000000..64a6a4c898f
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_model_with_ref_props.py
@@ -0,0 +1,49 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+from datetime import date, datetime
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.schemas import BoolClass, frozendict
+from petstore_api.model.object_model_with_ref_props import ObjectModelWithRefProps
+from petstore_api.model.number_with_validations import NumberWithValidations
+
+
+class TestObjectModelWithRefProps(unittest.TestCase):
+    """ObjectModelWithRefProps unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testObjectModelWithRefProps(self):
+        """Test ObjectModelWithRefProps"""
+        self.assertEqual(ObjectModelWithRefProps.myNumber, NumberWithValidations)
+
+        inst = ObjectModelWithRefProps(myNumber=15.0, myString="a", myBoolean=True)
+        assert isinstance(inst, ObjectModelWithRefProps)
+        assert isinstance(inst, frozendict)
+        assert set(inst.keys()) == {"myNumber", "myString", "myBoolean"}
+        assert inst.myNumber == 15.0
+        assert isinstance(inst.myNumber, NumberWithValidations)
+        assert inst.myString == 'a'
+        assert isinstance(inst.myString, ObjectModelWithRefProps.myString)
+        assert bool(inst.myBoolean) is True
+        assert isinstance(inst.myBoolean, ObjectModelWithRefProps.myBoolean)
+        assert isinstance(inst.myBoolean, BoolClass)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_with_difficultly_named_props.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_with_difficultly_named_props.py
new file mode 100644
index 00000000000..386304ecc67
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_with_difficultly_named_props.py
@@ -0,0 +1,37 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.object_with_difficultly_named_props import ObjectWithDifficultlyNamedProps
+
+
+class TestObjectWithDifficultlyNamedProps(unittest.TestCase):
+    """ObjectWithDifficultlyNamedProps unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectWithDifficultlyNamedProps(self):
+        """Test ObjectWithDifficultlyNamedProps"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = ObjectWithDifficultlyNamedProps()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_with_validations.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_with_validations.py
new file mode 100644
index 00000000000..3a443dfa39a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_object_with_validations.py
@@ -0,0 +1,52 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.object_with_validations import ObjectWithValidations
+
+
+class TestObjectWithValidations(unittest.TestCase):
+    """ObjectWithValidations unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_ObjectWithValidations(self):
+        """Test ObjectWithValidations"""
+
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Invalid value `frozendict.frozendict\({}\)`, number of properties must be greater than or equal to `2` at \('args\[0\]',\)"
+        ):
+            ObjectWithValidations({})
+
+
+        with self.assertRaisesRegex(
+            petstore_api.ApiValueError,
+            r"Invalid value `frozendict.frozendict\({'a': 'a'}\)`, number of properties must be greater than or equal to `2` at \('args\[0\]',\)"
+        ):
+            # number of properties less than 2 fails
+            model = ObjectWithValidations(a='a')
+
+        # 2 or more properties succeeds
+        model = ObjectWithValidations(a='a', b='b')
+        model = ObjectWithValidations(a='a', b='b', c='c')
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_parameters.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_parameters.py
new file mode 100644
index 00000000000..49940bab902
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_parameters.py
@@ -0,0 +1,954 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+import unittest
+import collections
+
+from petstore_api import api_client
+from petstore_api import schemas
+
+ParamTestCase = collections.namedtuple('ParamTestCase', 'payload expected_serialization explode', defaults=[False])
+
+
+class TestParameter(unittest.TestCase):
+    in_type_to_parameter_cls = {
+        api_client.ParameterInType.PATH: api_client.PathParameter,
+        api_client.ParameterInType.QUERY: api_client.QueryParameter,
+        api_client.ParameterInType.COOKIE: api_client.CookieParameter,
+        api_client.ParameterInType.HEADER: api_client.HeaderParameter,
+    }
+
+    def test_throws_exception_when_schema_and_content_omitted(self):
+        with self.assertRaises(ValueError):
+            api_client.QueryParameter(
+                name=''
+            )
+
+    def test_throws_exception_when_schema_and_content_input(self):
+        with self.assertRaises(ValueError):
+            schema = schemas.StrSchema
+            api_client.QueryParameter(
+                name='',
+                schema=schema,
+                content={'application/json': schema}
+            )
+
+    def test_succeeds_when_schema_or_content_input(self):
+        schema = schemas.StrSchema
+        api_client.QueryParameter(
+            name='',
+            schema=schema,
+        )
+        api_client.QueryParameter(
+            name='',
+            content={'application/json': schema}
+        )
+
+    def test_succeeds_and_fails_for_style_and_in_type_combos(self):
+        style_to_in_type = {
+            api_client.ParameterStyle.MATRIX: {api_client.ParameterInType.PATH},
+            api_client.ParameterStyle.LABEL: {api_client.ParameterInType.PATH},
+            api_client.ParameterStyle.FORM: {api_client.ParameterInType.QUERY, api_client.ParameterInType.COOKIE},
+            api_client.ParameterStyle.SIMPLE: {api_client.ParameterInType.PATH, api_client.ParameterInType.HEADER},
+            api_client.ParameterStyle.SPACE_DELIMITED: {api_client.ParameterInType.QUERY},
+            api_client.ParameterStyle.PIPE_DELIMITED: {api_client.ParameterInType.QUERY},
+            api_client.ParameterStyle.DEEP_OBJECT: {api_client.ParameterInType.QUERY},
+        }
+        schema = schemas.StrSchema
+        for style in style_to_in_type:
+            valid_in_types = style_to_in_type[style]
+            for valid_in_type in valid_in_types:
+                parameter_cls = self.in_type_to_parameter_cls[valid_in_type]
+                parameter_cls(
+                    name='',
+                    style=style,
+                    schema=schema,
+                )
+            invalid_in_types = {in_t for in_t in api_client.ParameterInType if in_t not in valid_in_types}
+            for invalid_in_type in invalid_in_types:
+                parameter_cls = self.in_type_to_parameter_cls[invalid_in_type]
+                with self.assertRaises(ValueError):
+                    parameter_cls(
+                        name='',
+                        style=style,
+                        schema=schema,
+                    )
+
+    def test_throws_exception_when_invalid_name_input(self):
+        disallowed_names = {'Accept', 'Content-Type', 'Authorization'}
+        for disallowed_name in disallowed_names:
+            with self.assertRaises(ValueError):
+                api_client.HeaderParameter(
+                    name=disallowed_name,
+                    schema=schemas.StrSchema,
+                )
+
+    def test_query_style_form_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                ()
+            ),
+            ParamTestCase(
+                1,
+                (('color', '1'),)
+            ),
+            ParamTestCase(
+                3.14,
+                (('color', '3.14'),)
+            ),
+            ParamTestCase(
+                'blue',
+                (('color', 'blue'),)
+            ),
+            ParamTestCase(
+                'hello world',
+                (('color', 'hello%20world'),)
+            ),
+            ParamTestCase(
+                '',
+                (('color', ''),)
+            ),
+            ParamTestCase(
+                True,
+                (('color', 'true'),)
+            ),
+            ParamTestCase(
+                False,
+                (('color', 'false'),)
+            ),
+            ParamTestCase(
+                [],
+                ()
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'blue,black,brown'),)
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (
+                    ('color', 'blue'),
+                    ('color', 'black'),
+                    ('color', 'brown'),
+                ),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                ()
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R,100,G,200,B,150'),)
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (
+                    ('R', '100'),
+                    ('G', '200'),
+                    ('B', '150'),
+                ),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.QueryParameter(
+                name=name,
+                style=api_client.ParameterStyle.FORM,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_cookie_style_form_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                ()
+            ),
+            ParamTestCase(
+                1,
+                (('color', '1'),)
+            ),
+            ParamTestCase(
+                3.14,
+                (('color', '3.14'),)
+            ),
+            ParamTestCase(
+                'blue',
+                (('color', 'blue'),)
+            ),
+            ParamTestCase(
+                'hello world',
+                (('color', 'hello%20world'),)
+            ),
+            ParamTestCase(
+                '',
+                (('color', ''),)
+            ),
+            ParamTestCase(
+                True,
+                (('color', 'true'),)
+            ),
+            ParamTestCase(
+                False,
+                (('color', 'false'),)
+            ),
+            ParamTestCase(
+                [],
+                ()
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'blue,black,brown'),)
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (
+                    ('color', 'blue'),
+                    ('color', 'black'),
+                    ('color', 'brown'),
+                ),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                ()
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R,100,G,200,B,150'),)
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (
+                    ('R', '100'),
+                    ('G', '200'),
+                    ('B', '150'),
+                ),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.CookieParameter(
+                name=name,
+                style=api_client.ParameterStyle.FORM,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_style_simple_in_path_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                dict(color='')
+            ),
+            ParamTestCase(
+                1,
+                dict(color='1')
+            ),
+            ParamTestCase(
+                3.14,
+                dict(color='3.14')
+            ),
+            ParamTestCase(
+                'blue',
+                dict(color='blue')
+            ),
+            ParamTestCase(
+                'hello world',
+                dict(color='hello%20world')
+            ),
+            ParamTestCase(
+                '',
+                dict(color='')
+            ),
+            ParamTestCase(
+                True,
+                dict(color='true')
+            ),
+            ParamTestCase(
+                False,
+                dict(color='false')
+            ),
+            ParamTestCase(
+                [],
+                dict(color='')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='blue,black,brown')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='blue,black,brown'),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                dict(color='')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='R,100,G,200,B,150')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='R=100,G=200,B=150'),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.PathParameter(
+                name=name,
+                style=api_client.ParameterStyle.SIMPLE,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_style_simple_in_header_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                {}
+            ),
+            ParamTestCase(
+                1,
+                dict(color='1')
+            ),
+            ParamTestCase(
+                3.14,
+                dict(color='3.14')
+            ),
+            ParamTestCase(
+                'blue',
+                dict(color='blue')
+            ),
+            ParamTestCase(
+                'hello world',
+                dict(color='hello%20world')
+            ),
+            ParamTestCase(
+                '',
+                dict(color='')
+            ),
+            ParamTestCase(
+                True,
+                dict(color='true')
+            ),
+            ParamTestCase(
+                False,
+                dict(color='false')
+            ),
+            ParamTestCase(
+                [],
+                {}
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='blue,black,brown')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='blue,black,brown'),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                {}
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='R,100,G,200,B,150')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='R=100,G=200,B=150'),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            print(test_case.payload)
+            parameter = api_client.HeaderParameter(
+                name=name,
+                style=api_client.ParameterStyle.SIMPLE,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_style_label_in_path_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                dict(color='')
+            ),
+            ParamTestCase(
+                1,
+                dict(color='.1')
+            ),
+            ParamTestCase(
+                3.14,
+                dict(color='.3.14')
+            ),
+            ParamTestCase(
+                'blue',
+                dict(color='.blue')
+            ),
+            ParamTestCase(
+                'hello world',
+                dict(color='.hello%20world')
+            ),
+            ParamTestCase(
+                '',
+                dict(color='.')
+            ),
+            ParamTestCase(
+                True,
+                dict(color='.true')
+            ),
+            ParamTestCase(
+                False,
+                dict(color='.false')
+            ),
+            ParamTestCase(
+                [],
+                dict(color='')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='.blue.black.brown')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='.blue.black.brown'),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                dict(color='')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='.R.100.G.200.B.150')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='.R=100.G=200.B=150'),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.PathParameter(
+                name=name,
+                style=api_client.ParameterStyle.LABEL,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_style_matrix_in_path_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                dict(color='')
+            ),
+            ParamTestCase(
+                1,
+                dict(color=';color=1')
+            ),
+            ParamTestCase(
+                3.14,
+                dict(color=';color=3.14')
+            ),
+            ParamTestCase(
+                'blue',
+                dict(color=';color=blue')
+            ),
+            ParamTestCase(
+                'hello world',
+                dict(color=';color=hello%20world')
+            ),
+            ParamTestCase(
+                '',
+                dict(color=';color')
+            ),
+            ParamTestCase(
+                True,
+                dict(color=';color=true')
+            ),
+            ParamTestCase(
+                False,
+                dict(color=';color=false')
+            ),
+            ParamTestCase(
+                [],
+                dict(color='')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color=';color=blue,black,brown')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color=';color=blue;color=black;color=brown'),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                dict(color='')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color=';color=R,100,G,200,B,150')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color=';R=100;G=200;B=150'),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.PathParameter(
+                name=name,
+                style=api_client.ParameterStyle.MATRIX,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_style_space_delimited_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                ()
+            ),
+            ParamTestCase(
+                1,
+                (('color', '1'),)
+            ),
+            ParamTestCase(
+                3.14,
+                (('color', '3.14'),)
+            ),
+            ParamTestCase(
+                'blue',
+                (('color', 'blue'),)
+            ),
+            ParamTestCase(
+                'hello world',
+                (('color', 'hello%20world'),)
+            ),
+            ParamTestCase(
+                '',
+                (('color', ''),)
+            ),
+            ParamTestCase(
+                True,
+                (('color', 'true'),)
+            ),
+            ParamTestCase(
+                False,
+                (('color', 'false'),)
+            ),
+            ParamTestCase(
+                [],
+                ()
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'blue%20black%20brown'),)
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'color=blue%20color=black%20color=brown'),),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                ()
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R%20100%20G%20200%20B%20150'),)
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R=100%20G=200%20B=150'),),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.QueryParameter(
+                name=name,
+                style=api_client.ParameterStyle.SPACE_DELIMITED,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_style_pipe_delimited_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                ()
+            ),
+            ParamTestCase(
+                1,
+                (('color', '1'),)
+            ),
+            ParamTestCase(
+                3.14,
+                (('color', '3.14'),)
+            ),
+            ParamTestCase(
+                'blue',
+                (('color', 'blue'),)
+            ),
+            ParamTestCase(
+                'hello world',
+                (('color', 'hello%20world'),)
+            ),
+            ParamTestCase(
+                '',
+                (('color', ''),)
+            ),
+            ParamTestCase(
+                True,
+                (('color', 'true'),)
+            ),
+            ParamTestCase(
+                False,
+                (('color', 'false'),)
+            ),
+            ParamTestCase(
+                [],
+                ()
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'blue|black|brown'),)
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'color=blue|color=black|color=brown'),),
+                explode=True
+            ),
+            ParamTestCase(
+                {},
+                ()
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R|100|G|200|B|150'),)
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R=100|G=200|B=150'),),
+                explode=True
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.QueryParameter(
+                name=name,
+                style=api_client.ParameterStyle.PIPE_DELIMITED,
+                schema=schemas.AnyTypeSchema,
+                explode=test_case.explode,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_path_params_no_style(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                dict(color='')
+            ),
+            ParamTestCase(
+                1,
+                dict(color='1')
+            ),
+            ParamTestCase(
+                3.14,
+                dict(color='3.14')
+            ),
+            ParamTestCase(
+                'blue',
+                dict(color='blue')
+            ),
+            ParamTestCase(
+                'hello world',
+                dict(color='hello%20world')
+            ),
+            ParamTestCase(
+                '',
+                dict(color='')
+            ),
+            ParamTestCase(
+                True,
+                dict(color='true')
+            ),
+            ParamTestCase(
+                False,
+                dict(color='false')
+            ),
+            ParamTestCase(
+                [],
+                dict(color='')
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='blue,black,brown')
+            ),
+            ParamTestCase(
+                {},
+                dict(color='')
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='R,100,G,200,B,150')
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.PathParameter(
+                name=name,
+                schema=schemas.AnyTypeSchema,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_header_params_no_style(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                {}
+            ),
+            ParamTestCase(
+                1,
+                dict(color='1')
+            ),
+            ParamTestCase(
+                3.14,
+                dict(color='3.14')
+            ),
+            ParamTestCase(
+                'blue',
+                dict(color='blue')
+            ),
+            ParamTestCase(
+                'hello world',
+                dict(color='hello%20world')
+            ),
+            ParamTestCase(
+                '',
+                dict(color='')
+            ),
+            ParamTestCase(
+                True,
+                dict(color='true')
+            ),
+            ParamTestCase(
+                False,
+                dict(color='false')
+            ),
+            ParamTestCase(
+                [],
+                {}
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                dict(color='blue,black,brown')
+            ),
+            ParamTestCase(
+                {},
+                {}
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                dict(color='R,100,G,200,B,150')
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.HeaderParameter(
+                name=name,
+                schema=schemas.AnyTypeSchema,
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_query_or_cookie_params_no_style(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                ()
+            ),
+            ParamTestCase(
+                1,
+                (('color', '1'),)
+            ),
+            ParamTestCase(
+                3.14,
+                (('color', '3.14'),)
+            ),
+            ParamTestCase(
+                'blue',
+                (('color', 'blue'),)
+            ),
+            ParamTestCase(
+                'hello world',
+                (('color', 'hello%20world'),)
+            ),
+            ParamTestCase(
+                '',
+                (('color', ''),)
+            ),
+            ParamTestCase(
+                True,
+                (('color', 'true'),)
+            ),
+            ParamTestCase(
+                False,
+                (('color', 'false'),)
+            ),
+            ParamTestCase(
+                [],
+                ()
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                (('color', 'blue,black,brown'),)
+            ),
+            ParamTestCase(
+                {},
+                ()
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                (('color', 'R,100,G,200,B,150'),)
+            ),
+        )
+        for in_type in {api_client.ParameterInType.QUERY, api_client.ParameterInType.COOKIE}:
+            for test_case in test_cases:
+                parameter_cls = self.in_type_to_parameter_cls[in_type]
+                parameter = parameter_cls(
+                    name=name,
+                    schema=schemas.AnyTypeSchema,
+                )
+                serialization = parameter.serialize(test_case.payload)
+                self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_checks_content_lengths(self):
+        with self.assertRaises(ValueError):
+            api_client.QueryParameter(
+                name='', content={}
+            )
+        with self.assertRaises(ValueError):
+            api_client.QueryParameter(
+                name='',
+                content={'application/json': schemas.AnyTypeSchema, 'text/plain': schemas.AnyTypeSchema}
+            )
+        # valid length works
+        api_client.QueryParameter(
+            name='',
+            content={'application/json': schemas.AnyTypeSchema}
+        )
+
+    def test_content_json_serialization(self):
+        name = 'color'
+        test_cases = (
+            ParamTestCase(
+                None,
+                {'color': 'null'}
+            ),
+            ParamTestCase(
+                1,
+                {'color': '1'}
+            ),
+            ParamTestCase(
+                3.14,
+                {'color': '3.14'}
+            ),
+            ParamTestCase(
+                'blue',
+                {'color': '"blue"'}
+            ),
+            ParamTestCase(
+                'hello world',
+                {'color': '"hello world"'}
+            ),
+            ParamTestCase(
+                '',
+                {'color': '""'}
+            ),
+            ParamTestCase(
+                True,
+                {'color': 'true'}
+            ),
+            ParamTestCase(
+                False,
+                {'color': 'false'}
+            ),
+            ParamTestCase(
+                [],
+                {'color': '[]'}
+            ),
+            ParamTestCase(
+                ['blue', 'black', 'brown'],
+                {'color': '["blue", "black", "brown"]'}
+            ),
+            ParamTestCase(
+                {},
+                {'color': '{}'}
+            ),
+            ParamTestCase(
+                dict(R=100, G=200, B=150),
+                {'color': '{"R": 100, "G": 200, "B": 150}'}
+            ),
+        )
+        for test_case in test_cases:
+            parameter = api_client.HeaderParameter(
+                name=name,
+                content={'application/json': schemas.AnyTypeSchema}
+            )
+            serialization = parameter.serialize(test_case.payload)
+            self.assertEqual(serialization, test_case.expected_serialization)
+
+    def test_throws_error_for_unimplemented_serialization(self):
+        with self.assertRaises(NotImplementedError):
+            parameter = api_client.HeaderParameter(
+                name='color',
+                content={'text/plain': schemas.AnyTypeSchema}
+            )
+            parameter.serialize(None)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_parent_pet.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_parent_pet.py
new file mode 100644
index 00000000000..171310075ab
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_parent_pet.py
@@ -0,0 +1,42 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.grandparent_animal import GrandparentAnimal
+from petstore_api.model.parent_pet import ParentPet
+
+
+class TestParentPet(unittest.TestCase):
+    """ParentPet unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testParentPet(self):
+        """Test ParentPet"""
+
+        # test that we can make a ParentPet from a ParentPet
+        # which requires that we travel back through ParentPet's allOf descendant
+        # GrandparentAnimal, and we use the descendant's discriminator to make ParentPet
+        model = ParentPet(pet_type="ParentPet")
+        assert isinstance(model, ParentPet)
+        assert isinstance(model, GrandparentAnimal)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_quadrilateral.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_quadrilateral.py
new file mode 100644
index 00000000000..dff97bc716a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_quadrilateral.py
@@ -0,0 +1,40 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model import complex_quadrilateral
+from petstore_api.model import simple_quadrilateral
+from petstore_api.model.quadrilateral import Quadrilateral
+
+
+class TestQuadrilateral(unittest.TestCase):
+    """Quadrilateral unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testQuadrilateral(self):
+        """Test Quadrilateral"""
+        instance = Quadrilateral(shapeType="Quadrilateral", quadrilateralType="ComplexQuadrilateral")
+        assert isinstance(instance, complex_quadrilateral.ComplexQuadrilateral)
+        instance = Quadrilateral(shapeType="Quadrilateral", quadrilateralType="SimpleQuadrilateral")
+        assert isinstance(instance, simple_quadrilateral.SimpleQuadrilateral)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_request_body.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_request_body.py
new file mode 100644
index 00000000000..88e9b67f691
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_request_body.py
@@ -0,0 +1,147 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+import collections
+import json
+import unittest
+
+from petstore_api import api_client, exceptions, schemas
+
+ParamTestCase = collections.namedtuple('ParamTestCase', 'payload expected_serialization')
+
+
+class TestParameter(unittest.TestCase):
+
+    def test_throws_exception_when_content_is_invalid_size(self):
+        with self.assertRaises(ValueError):
+            api_client.RequestBody(
+                content={}
+            )
+
+    def test_content_json_serialization(self):
+        payloads = [
+            None,
+            1,
+            3.14,
+            'blue',
+            'hello world',
+            '',
+            True,
+            False,
+            [],
+            ['blue', 'black', 'brown'],
+            {},
+            dict(R=100, G=200, B=150),
+        ]
+        for payload in payloads:
+            request_body = api_client.RequestBody(
+                content={'application/json': api_client.MediaType(schema=schemas.AnyTypeSchema)}
+            )
+            serialization = request_body.serialize(payload, 'application/json')
+            self.assertEqual(
+                serialization,
+                dict(body=json.dumps(payload, separators=(",", ":"), ensure_ascii=False).encode('utf-8'))
+            )
+
+    def test_content_multipart_form_data_serialization(self):
+        payload = dict(
+            some_null=None,
+            some_bool=True,
+            some_str='a',
+            some_int=1,
+            some_float=3.14,
+            some_list=[],
+            some_dict={},
+            some_bytes=b'abc'
+        )
+        request_body = api_client.RequestBody(
+            content={'multipart/form-data': api_client.MediaType(schema=schemas.AnyTypeSchema)}
+        )
+        serialization = request_body.serialize(payload, 'multipart/form-data')
+        self.assertEqual(
+            serialization,
+            dict(
+                fields=(
+                    api_client.RequestField(
+                        name='some_null', data='null', headers={'Content-Type': 'application/json'}),
+                    api_client.RequestField(
+                        name='some_bool', data='true', headers={'Content-Type': 'application/json'}),
+                    api_client.RequestField(
+                        name='some_str', data='a', headers={'Content-Type': 'text/plain'}),
+                    api_client.RequestField(
+                        name='some_int', data='1', headers={'Content-Type': 'application/json'}),
+                    api_client.RequestField(
+                        name='some_float', data='3.14', headers={'Content-Type': 'application/json'}),
+                    api_client.RequestField(
+                        name='some_list', data='[]', headers={'Content-Type': 'application/json'}),
+                    api_client.RequestField(
+                        name='some_dict', data='{}', headers={'Content-Type': 'application/json'}),
+                    api_client.RequestField(
+                        name='some_bytes', data=b'abc', headers={'Content-Type': 'application/octet-stream'})
+                )
+            )
+        )
+
+    def test_throws_error_for_nonexistant_content_type(self):
+        request_body = api_client.RequestBody(
+            content={'application/json': api_client.MediaType(schema=schemas.AnyTypeSchema)}
+        )
+        with self.assertRaises(KeyError):
+            request_body.serialize(None, 'abc/def')
+
+    def test_throws_error_for_not_implemented_content_type(self):
+        request_body = api_client.RequestBody(
+            content={
+                'application/json': api_client.MediaType(schema=schemas.AnyTypeSchema),
+                'text/css': api_client.MediaType(schema=schemas.AnyTypeSchema)
+            }
+        )
+        with self.assertRaises(NotImplementedError):
+            request_body.serialize(None, 'text/css')
+
+    def test_application_x_www_form_urlencoded_serialization(self):
+        payload = dict(
+            some_null=None,
+            some_str='a',
+            some_int=1,
+            some_float=3.14,
+            some_list=[],
+            some_dict={},
+        )
+        content_type = 'application/x-www-form-urlencoded'
+        request_body = api_client.RequestBody(
+            content={content_type: api_client.MediaType(schema=schemas.AnyTypeSchema)}
+        )
+        serialization = request_body.serialize(payload, content_type)
+        self.assertEqual(
+            serialization,
+            {'fields': (('some_str', 'a'), ('some_int', '1'), ('some_float', '3.14'))}
+        )
+
+        serialization = request_body.serialize({}, content_type)
+        self.assertEqual(
+            serialization,
+            {}
+        )
+
+        invalid_payloads = [
+            dict(some_bool=True),
+            dict(some_bytes=b'abc'),
+            dict(some_list_with_data=[0]),
+            dict(some_dict_with_data={'a': 'b'}),
+        ]
+        for invalid_payload in invalid_payloads:
+            with self.assertRaises(exceptions.ApiValueError):
+                request_body.serialize(invalid_payload, content_type)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_shape.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_shape.py
new file mode 100644
index 00000000000..ce8906fdd13
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_shape.py
@@ -0,0 +1,117 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.schemas import Singleton, frozendict
+from petstore_api.model.shape import Shape
+from petstore_api.model import quadrilateral
+from petstore_api.model import complex_quadrilateral
+from petstore_api.model import simple_quadrilateral
+from petstore_api.model import triangle
+from petstore_api.model import triangle_interface
+from petstore_api.model import equilateral_triangle
+from petstore_api.model import isosceles_triangle
+from petstore_api.model import scalene_triangle
+
+
+class TestShape(unittest.TestCase):
+    """Shape unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_recursionlimit(self):
+        """Test case for recursionlimit
+
+        """
+        assert sys.getrecursionlimit() == 1234
+
+    def testShape(self):
+        """Test Shape"""
+
+        tri = Shape(
+            shapeType="Triangle",
+            triangleType="EquilateralTriangle"
+        )
+        assert isinstance(tri, equilateral_triangle.EquilateralTriangle)
+        assert isinstance(tri, triangle.Triangle)
+        assert isinstance(tri, triangle_interface.TriangleInterface)
+        assert isinstance(tri, Shape)
+        assert isinstance(tri, frozendict)
+        assert isinstance(tri.shapeType, str)
+        assert isinstance(tri.shapeType, Singleton)
+
+        tri = Shape(
+            shapeType="Triangle",
+            triangleType="IsoscelesTriangle"
+        )
+        assert isinstance(tri, isosceles_triangle.IsoscelesTriangle)
+
+        tri = Shape(
+            shapeType="Triangle",
+            triangleType="ScaleneTriangle"
+        )
+        assert isinstance(tri, scalene_triangle.ScaleneTriangle)
+
+        quad = Shape(
+            shapeType="Quadrilateral",
+            quadrilateralType="ComplexQuadrilateral"
+        )
+        assert isinstance(quad, complex_quadrilateral.ComplexQuadrilateral)
+
+        quad = Shape(
+            shapeType="Quadrilateral",
+            quadrilateralType="SimpleQuadrilateral"
+        )
+        assert isinstance(quad, simple_quadrilateral.SimpleQuadrilateral)
+
+        # data missing
+        with self.assertRaisesRegex(
+                petstore_api.exceptions.ApiValueError,
+                r"Cannot deserialize input data due to missing discriminator. The discriminator "
+                r"property 'shapeType' is missing at path: \('args\[0\]',\)"
+        ):
+            Shape({})
+
+        # invalid shape_type (first discriminator). 'Circle' does not exist in the model.
+        err_msg = (
+            r"Invalid discriminator value was passed in to Shape.shapeType Only the values "
+            r"\['Quadrilateral', 'Triangle'\] are allowed at \('args\[0\]', 'shapeType'\)"
+        )
+        with self.assertRaisesRegex(
+                petstore_api.ApiValueError,
+                err_msg
+        ):
+            Shape(shapeType="Circle")
+
+        # invalid quadrilateral_type (second discriminator)
+        err_msg = (
+            r"Invalid discriminator value was passed in to Quadrilateral.quadrilateralType Only the values "
+            r"\['ComplexQuadrilateral', 'SimpleQuadrilateral'\] are allowed at \('args\[0\]', 'quadrilateralType'\)"
+        )
+        with self.assertRaisesRegex(
+                petstore_api.ApiValueError,
+                err_msg
+        ):
+            Shape(
+                shapeType="Quadrilateral",
+                quadrilateralType="Triangle"
+            )
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_string_enum.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_string_enum.py
new file mode 100644
index 00000000000..efba299d9f3
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_string_enum.py
@@ -0,0 +1,56 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.string_enum import StringEnum
+from petstore_api.schemas import Singleton, NoneClass
+
+
+class TestStringEnum(unittest.TestCase):
+    """StringEnum unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testStringEnum(self):
+        """Test StringEnum"""
+        inst = StringEnum(None)
+        assert isinstance(inst, StringEnum)
+        assert isinstance(inst, NoneClass)
+
+        inst = StringEnum('approved')
+        assert isinstance(inst, StringEnum)
+        assert isinstance(inst, Singleton)
+        assert isinstance(inst, str)
+        assert inst == 'approved'
+
+        with self.assertRaises(petstore_api.ApiValueError):
+            StringEnum('garbage')
+
+        # make sure that we can access its allowed_values
+        assert isinstance(StringEnum.NONE, NoneClass)
+        assert StringEnum.PLACED == 'placed'
+        assert StringEnum.APPROVED == 'approved'
+        assert StringEnum.DELIVERED == 'delivered'
+        assert StringEnum.DOUBLE_QUOTE_WITH_NEWLINE == "double quote \n with newline"
+        assert StringEnum.MULTIPLE_LINES == "multiple\nlines"
+        assert StringEnum.SINGLE_QUOTED == "single quoted"
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_triangle.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_triangle.py
new file mode 100644
index 00000000000..286b5b0f9eb
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_triangle.py
@@ -0,0 +1,38 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import unittest
+
+from petstore_api.model.equilateral_triangle import EquilateralTriangle
+from petstore_api.model.isosceles_triangle import IsoscelesTriangle
+from petstore_api.model.scalene_triangle import ScaleneTriangle
+from petstore_api.model.triangle import Triangle
+from petstore_api.model.triangle_interface import TriangleInterface
+from petstore_api.schemas import frozendict
+
+
+class TestTriangle(unittest.TestCase):
+    """Triangle unit test stubs"""
+
+    def testTriangle(self):
+        """Test Triangle"""
+        tri_classes = [EquilateralTriangle, IsoscelesTriangle, ScaleneTriangle]
+        for tri_class in tri_classes:
+            tri = Triangle(shapeType="Triangle", triangleType=tri_class.__name__)
+            assert isinstance(tri, tri_class)
+            assert isinstance(tri, Triangle)
+            assert isinstance(tri, TriangleInterface)
+            assert isinstance(tri, frozendict)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_validate.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_validate.py
new file mode 100644
index 00000000000..32a7f60d1ca
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_validate.py
@@ -0,0 +1,330 @@
+# coding: utf-8
+
+from collections import defaultdict
+from decimal import Decimal
+import sys
+import typing
+from unittest.mock import patch
+import unittest
+
+import petstore_api
+from petstore_api.model.string_with_validation import StringWithValidation
+from petstore_api.model.string_enum import StringEnum
+from petstore_api.model.number_with_validations import NumberWithValidations
+from petstore_api.model.array_holding_any_type import ArrayHoldingAnyType
+from petstore_api.model.array_with_validations_in_items import ArrayWithValidationsInItems
+from petstore_api.model.foo import Foo
+from petstore_api.model.animal import Animal
+from petstore_api.model.dog import Dog
+from petstore_api.model.dog_all_of import DogAllOf
+from petstore_api.model.boolean_enum import BooleanEnum
+from petstore_api.model.pig import Pig
+from petstore_api.model.danish_pig import DanishPig
+from petstore_api.model.gm_fruit import GmFruit
+from petstore_api.model.apple import Apple
+from petstore_api.model.banana import Banana
+
+from petstore_api.schemas import (
+    AnyTypeSchema,
+    StrSchema,
+    NumberSchema,
+    Schema,
+    InstantiationMetadata,
+    Int64Schema,
+    StrBase,
+    NumberBase,
+    DictBase,
+    ListBase,
+    frozendict,
+)
+
+class TestValidateResults(unittest.TestCase):
+
+    def test_str_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = StringWithValidation._validate('abcdefg', _instantiation_metadata=im)
+        assert path_to_schemas == {('args[0]',): set([StringWithValidation, str])}
+
+    def test_number_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = NumberWithValidations._validate(Decimal(11), _instantiation_metadata=im)
+        assert path_to_schemas == {('args[0]',): set([NumberWithValidations, Decimal])}
+
+    def test_str_enum_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = StringEnum._validate('placed', _instantiation_metadata=im)
+        assert path_to_schemas == {('args[0]',): set([StringEnum])}
+
+    def test_nullable_enum_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = StringEnum._validate(None, _instantiation_metadata=im)
+        assert path_to_schemas == {('args[0]',): set([StringEnum])}
+
+    def test_empty_list_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = ArrayHoldingAnyType._validate((), _instantiation_metadata=im)
+        assert path_to_schemas == {('args[0]',): set([ArrayHoldingAnyType, tuple])}
+
+    def test_list_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = ArrayHoldingAnyType._validate((Decimal(1), 'a'), _instantiation_metadata=im)
+        assert path_to_schemas == {
+            ('args[0]',): set([ArrayHoldingAnyType, tuple]),
+            ('args[0]', 0): set([AnyTypeSchema, Decimal]),
+            ('args[0]', 1): set([AnyTypeSchema, str])
+        }
+
+    def test_empty_dict_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = Foo._validate(frozendict({}), _instantiation_metadata=im)
+        assert path_to_schemas == {('args[0]',): set([Foo, frozendict])}
+
+    def test_dict_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = Foo._validate(frozendict({'bar': 'a', 'additional': Decimal(0)}), _instantiation_metadata=im)
+        assert path_to_schemas == {
+            ('args[0]',): set([Foo, frozendict]),
+            ('args[0]', 'bar'): set([StrSchema, str]),
+            ('args[0]', 'additional'): set([AnyTypeSchema, Decimal])
+        }
+
+    def test_discriminated_dict_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = Animal._validate(frozendict(className='Dog', color='black'), _instantiation_metadata=im)
+        assert path_to_schemas == {
+            ('args[0]',): set([Animal, Dog, DogAllOf, frozendict]),
+            ('args[0]', 'className'): set([StrSchema, AnyTypeSchema, str]),
+            ('args[0]', 'color'): set([StrSchema, AnyTypeSchema, str]),
+        }
+
+    def test_bool_enum_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = BooleanEnum._validate(True, _instantiation_metadata=im)
+        assert path_to_schemas == {
+            ('args[0]',): set([BooleanEnum])
+        }
+
+    def test_oneof_composition_pig_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = Pig._validate(frozendict(className='DanishPig'), _instantiation_metadata=im)
+        assert path_to_schemas == {
+            ('args[0]',): set([Pig, DanishPig, frozendict]),
+            ('args[0]', 'className'): set([DanishPig.className, AnyTypeSchema, str]),
+        }
+
+    def test_anyof_composition_gm_fruit_validate(self):
+        im = InstantiationMetadata()
+        path_to_schemas = GmFruit._validate(frozendict(cultivar='GoldenDelicious', lengthCm=Decimal(10)), _instantiation_metadata=im)
+        assert path_to_schemas == {
+            ('args[0]',): set([GmFruit, Apple, Banana, frozendict]),
+            ('args[0]', 'cultivar'): set([Apple.cultivar, AnyTypeSchema, str]),
+            ('args[0]', 'lengthCm'): set([AnyTypeSchema, NumberSchema, Decimal]),
+        }
+
+class TestValidateCalls(unittest.TestCase):
+    def test_empty_list_validate(self):
+        return_value = {('args[0]',): set([ArrayHoldingAnyType, tuple])}
+        with patch.object(Schema, '_validate', return_value=return_value) as mock_validate:
+           instance = ArrayHoldingAnyType([])
+           assert mock_validate.call_count == 1
+
+        with patch.object(Schema, '_validate', return_value=return_value) as mock_validate:
+           ArrayHoldingAnyType._from_openapi_data([])
+           assert mock_validate.call_count == 1
+
+    def test_empty_dict_validate(self):
+        return_value = {('args[0]',): set([Foo, frozendict])}
+        with patch.object(Schema, '_validate', return_value=return_value) as mock_validate:
+           instance = Foo({})
+           assert mock_validate.call_count == 1
+
+        with patch.object(Schema, '_validate', return_value=return_value) as mock_validate:
+           Foo._from_openapi_data({})
+           assert mock_validate.call_count == 1
+
+    def test_list_validate_direct_instantiation(self):
+        expected_call_by_index = {
+            0: [
+                ArrayWithValidationsInItems,
+                ((Decimal('7'),),),
+                InstantiationMetadata(path_to_item=('args[0]',))
+            ],
+            1: [
+                ArrayWithValidationsInItems._items,
+                (Decimal('7'),),
+                InstantiationMetadata(path_to_item=('args[0]', 0))
+            ]
+        }
+        call_index = 0
+        result_by_call_index = {
+            0: defaultdict(set, [( ('args[0]',), set([ArrayWithValidationsInItems, tuple]))] ),
+            1: defaultdict(set, [( ('args[0]', 0), set([ArrayWithValidationsInItems._items, Decimal]) )] ),
+        }
+
+        @classmethod
+        def new_validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+            nonlocal call_index
+            assert [cls, args, _instantiation_metadata] == expected_call_by_index[call_index]
+            result = result_by_call_index.get(call_index)
+            call_index += 1
+            if result is None:
+                raise petstore_api.ApiValueError('boom')
+            return result
+
+        with patch.object(Schema, '_validate', new=new_validate):
+            ArrayWithValidationsInItems([7])
+
+    def test_list_validate_direct_instantiation_cast_item(self):
+        # validation is skipped if items are of the correct type
+        expected_call_by_index = {
+            0: [
+                ArrayWithValidationsInItems,
+                ((Decimal('7'),),),
+                InstantiationMetadata(path_to_item=('args[0]',))
+            ],
+        }
+        call_index = 0
+        result_by_call_index = {
+            0: defaultdict(set, [( ('args[0]',), set([ArrayWithValidationsInItems, tuple]))] ),
+        }
+
+        @classmethod
+        def new_validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+            nonlocal call_index
+            assert [cls, args, _instantiation_metadata] == expected_call_by_index[call_index]
+            result = result_by_call_index.get(call_index)
+            call_index += 1
+            if result is None:
+                raise petstore_api.ApiValueError('boom')
+            return result
+
+        item = ArrayWithValidationsInItems._items(7)
+        with patch.object(Schema, '_validate', new=new_validate):
+            ArrayWithValidationsInItems([item])
+
+    def test_list_validate_from_openai_data_instantiation(self):
+        expected_call_by_index = {
+            0: [
+                ArrayWithValidationsInItems,
+                ((Decimal('7'),),),
+                InstantiationMetadata(path_to_item=('args[0]',), from_server=True)
+            ],
+            1: [
+                ArrayWithValidationsInItems._items,
+                (Decimal('7'),),
+                InstantiationMetadata(path_to_item=('args[0]', 0), from_server=True)
+            ]
+        }
+        call_index = 0
+        result_by_call_index = {
+            0: defaultdict(set, [( ('args[0]',), set([ArrayWithValidationsInItems, tuple]))] ),
+            1: defaultdict(set, [( ('args[0]', 0), set([ArrayWithValidationsInItems._items, Decimal]) )] ),
+        }
+
+        @classmethod
+        def new_validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+            nonlocal call_index
+            assert [cls, args, _instantiation_metadata] == expected_call_by_index[call_index]
+            result = result_by_call_index.get(call_index)
+            call_index += 1
+            if result is None:
+                raise petstore_api.ApiValueError('boom')
+            return result
+
+        with patch.object(Schema, '_validate', new=new_validate):
+            ArrayWithValidationsInItems._from_openapi_data([7])
+
+    def test_dict_validate_direct_instantiation(self):
+        expected_call_by_index = {
+            0: [
+                Foo,
+                (frozendict({'bar': 'a'}),),
+                InstantiationMetadata(path_to_item=('args[0]',))
+            ],
+            1: [
+                StrSchema,
+                ('a',),
+                InstantiationMetadata(path_to_item=('args[0]', 'bar'))
+            ]
+        }
+        call_index = 0
+        result_by_call_index = {
+            0: defaultdict(set, [( ('args[0]',), set([Foo, frozendict]))] ),
+            1: defaultdict(set, [( ('args[0]', 'bar'), set([StrSchema, str]) )] ),
+        }
+
+        @classmethod
+        def new_validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+            nonlocal call_index
+            assert [cls, args, _instantiation_metadata] == expected_call_by_index[call_index]
+            result = result_by_call_index.get(call_index)
+            call_index += 1
+            if result is None:
+                raise petstore_api.ApiValueError('boom')
+            return result
+
+        with patch.object(Schema, '_validate', new=new_validate):
+            Foo(bar='a')
+
+    def test_dict_validate_direct_instantiation_cast_item(self):
+        expected_call_by_index = {
+            0: [
+                Foo,
+                (frozendict({'bar': 'a'}),),
+                InstantiationMetadata(path_to_item=('args[0]',))
+            ],
+        }
+        call_index = 0
+        result_by_call_index = {
+            0: defaultdict(set, [( ('args[0]',), set([Foo, frozendict]))] ),
+        }
+
+        @classmethod
+        def new_validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+            nonlocal call_index
+            assert [cls, args, _instantiation_metadata] == expected_call_by_index[call_index]
+            result = result_by_call_index.get(call_index)
+            call_index += 1
+            if result is None:
+                raise petstore_api.ApiValueError('boom')
+            return result
+
+        bar = StrSchema('a')
+        with patch.object(Schema, '_validate', new=new_validate):
+            Foo(bar=bar)
+
+    def test_dict_validate_from_openapi_data_instantiation(self):
+        expected_call_by_index = {
+            0: [
+                Foo,
+                (frozendict({'bar': 'a'}),),
+                InstantiationMetadata(path_to_item=('args[0]',), from_server=True)
+            ],
+            1: [
+                StrSchema,
+                ('a',),
+                InstantiationMetadata(path_to_item=('args[0]', 'bar'), from_server=True)
+            ]
+        }
+        call_index = 0
+        result_by_call_index = {
+            0: defaultdict(set, [( ('args[0]',), set([Foo, frozendict]))] ),
+            1: defaultdict(set, [( ('args[0]', 'bar'), set([StrSchema, str]) )] ),
+        }
+
+        @classmethod
+        def new_validate(cls, *args, _instantiation_metadata: typing.Optional[InstantiationMetadata] = None):
+            nonlocal call_index
+            assert [cls, args, _instantiation_metadata] == expected_call_by_index[call_index]
+            result = result_by_call_index.get(call_index)
+            call_index += 1
+            if result is None:
+                raise petstore_api.ApiValueError('boom')
+            return result
+
+        with patch.object(Schema, '_validate', new=new_validate):
+            Foo._from_openapi_data({'bar': 'a'})
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/test_whale.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_whale.py
new file mode 100644
index 00000000000..88bd8ed12d4
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/test_whale.py
@@ -0,0 +1,49 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.schemas import BoolClass
+from petstore_api.model.whale import Whale
+
+
+class TestWhale(unittest.TestCase):
+    """Whale unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_Whale(self):
+        # test that the hasBaleen __bool__ method is working, True input
+        whale = Whale(
+            className='whale',
+            hasBaleen=True
+        )
+        assert isinstance(whale.hasBaleen, BoolClass)
+        self.assertTrue(whale.hasBaleen)
+
+        # test that the hasBaleen __bool__ method is working, False input
+        whale = Whale(
+            className='whale',
+            hasBaleen=False
+        )
+        assert isinstance(whale.hasBaleen, BoolClass)
+        self.assertFalse(whale.hasBaleen)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python-experimental/tests_manual/util.py b/samples/openapi3/client/petstore/python-experimental/tests_manual/util.py
new file mode 100644
index 00000000000..113d7dcc547
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tests_manual/util.py
@@ -0,0 +1,8 @@
+# flake8: noqa
+
+import random
+
+
+def id_gen(bits=32):
+    """ Returns a n-bit randomly generated int """
+    return int(random.getrandbits(bits))
diff --git a/samples/openapi3/client/petstore/python-experimental/tox.ini b/samples/openapi3/client/petstore/python-experimental/tox.ini
new file mode 100644
index 00000000000..ef7cec358ca
--- /dev/null
+++ b/samples/openapi3/client/petstore/python-experimental/tox.ini
@@ -0,0 +1,9 @@
+[tox]
+envlist = py39
+
+[testenv]
+deps=-r{toxinidir}/requirements.txt
+     -r{toxinidir}/test-requirements.txt
+
+commands=
+   pytest --cov=petstore_api
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/another_fake_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/another_fake_api.py
index 43e5339dcc9..bbebcdf743f 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/another_fake_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/another_fake_api.py
@@ -114,7 +114,8 @@ class AnotherFakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class AnotherFakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/default_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/default_api.py
index d3be5ae092a..c626466b75d 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/default_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/default_api.py
@@ -107,7 +107,8 @@ class DefaultApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -126,7 +127,7 @@ class DefaultApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_api.py
index a08aee25453..91d684ae47f 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_api.py
@@ -107,7 +107,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -126,7 +127,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -246,7 +247,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -271,7 +273,7 @@ class FakeApi(object):
         if 'query_1' in local_var_params and local_var_params['query_1'] is not None:  # noqa: E501
             query_params.append(('query_1', local_var_params['query_1']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'header_1' in local_var_params:
             header_params['header_1'] = local_var_params['header_1']  # noqa: E501
 
@@ -387,7 +389,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -406,7 +409,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -526,7 +529,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -545,7 +549,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -665,7 +669,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -684,7 +689,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -804,7 +809,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -823,7 +829,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -943,7 +949,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -966,7 +973,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1086,7 +1093,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1105,7 +1113,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1219,7 +1227,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1242,7 +1251,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1359,7 +1368,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1388,7 +1398,7 @@ class FakeApi(object):
         if 'query' in local_var_params and local_var_params['query'] is not None:  # noqa: E501
             query_params.append(('query', local_var_params['query']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1502,7 +1512,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1525,7 +1536,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1710,7 +1721,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1773,7 +1785,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1948,7 +1960,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1976,7 +1989,7 @@ class FakeApi(object):
         if 'enum_query_double' in local_var_params and local_var_params['enum_query_double'] is not None:  # noqa: E501
             query_params.append(('enum_query_double', local_var_params['enum_query_double']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'enum_header_string_array' in local_var_params:
             header_params['enum_header_string_array'] = local_var_params['enum_header_string_array']  # noqa: E501
             collection_formats['enum_header_string_array'] = 'csv'  # noqa: E501
@@ -2123,7 +2136,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2162,7 +2176,7 @@ class FakeApi(object):
         if 'int64_group' in local_var_params and local_var_params['int64_group'] is not None:  # noqa: E501
             query_params.append(('int64_group', local_var_params['int64_group']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'required_boolean_group' in local_var_params:
             header_params['required_boolean_group'] = local_var_params['required_boolean_group']  # noqa: E501
         if 'boolean_group' in local_var_params:
@@ -2270,7 +2284,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2293,7 +2308,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -2410,7 +2425,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2437,7 +2453,7 @@ class FakeApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -2583,7 +2599,8 @@ class FakeApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -2645,7 +2662,7 @@ class FakeApi(object):
         if 'allow_empty' in local_var_params and local_var_params['allow_empty'] is not None:  # noqa: E501
             query_params.append(('allowEmpty', local_var_params['allow_empty']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py
index 1dd90624e71..05c1c8a0e4f 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/fake_classname_tags_123_api.py
@@ -114,7 +114,8 @@ class FakeClassnameTags123Api(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class FakeClassnameTags123Api(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/pet_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/pet_api.py
index 5f4bcb8888b..2fda30914a7 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/pet_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/pet_api.py
@@ -125,7 +125,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -148,7 +149,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -266,7 +267,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -291,7 +293,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
         if 'api_key' in local_var_params:
             header_params['api_key'] = local_var_params['api_key']  # noqa: E501
 
@@ -399,7 +401,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -425,7 +428,7 @@ class PetApi(object):
             query_params.append(('status', local_var_params['status']))  # noqa: E501
             collection_formats['status'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -538,7 +541,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -564,7 +568,7 @@ class PetApi(object):
             query_params.append(('tags', local_var_params['tags']))  # noqa: E501
             collection_formats['tags'] = 'csv'  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -677,7 +681,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -702,7 +707,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -827,7 +832,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -850,7 +856,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -973,7 +979,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -998,7 +1005,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1122,7 +1129,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1147,7 +1155,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1277,7 +1285,8 @@ class PetApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1306,7 +1315,7 @@ class PetApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/store_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/store_api.py
index 48c85b36d7b..5b8296dfbeb 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/store_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/store_api.py
@@ -114,7 +114,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -139,7 +140,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -240,7 +241,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -259,7 +261,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -371,7 +373,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -400,7 +403,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -512,7 +515,8 @@ class StoreApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -535,7 +539,7 @@ class StoreApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/user_api.py b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/user_api.py
index 89fd46adef9..d634bad956b 100755
--- a/samples/openapi3/client/petstore/python-legacy/petstore_api/api/user_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/petstore_api/api/user_api.py
@@ -114,7 +114,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -137,7 +138,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -249,7 +250,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -272,7 +274,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -384,7 +386,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -407,7 +410,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -521,7 +524,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -546,7 +550,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -650,7 +654,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -675,7 +680,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -792,7 +797,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -823,7 +829,7 @@ class UserApi(object):
         if 'password' in local_var_params and local_var_params['password'] is not None:  # noqa: E501
             query_params.append(('password', local_var_params['password']))  # noqa: E501
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -929,7 +935,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -948,7 +955,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
@@ -1059,7 +1066,8 @@ class UserApi(object):
                 '_preload_content',
                 '_request_timeout',
                 '_request_auth',
-                '_content_type'
+                '_content_type',
+                '_headers'
             ]
         )
 
@@ -1088,7 +1096,7 @@ class UserApi(object):
 
         query_params = []
 
-        header_params = {}
+        header_params = dict(local_var_params.get('_headers', {}))
 
         form_params = []
         local_var_files = {}
diff --git a/samples/openapi3/client/petstore/python-legacy/setup.py b/samples/openapi3/client/petstore/python-legacy/setup.py
index 217134e7947..58abfa11b8d 100755
--- a/samples/openapi3/client/petstore/python-legacy/setup.py
+++ b/samples/openapi3/client/petstore/python-legacy/setup.py
@@ -35,6 +35,7 @@ setup(
     packages=find_packages(exclude=["test", "tests"]),
     include_package_data=True,
     license="Apache-2.0",
+    long_description_content_type='text/markdown',
     long_description="""\
     This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \&quot; \\  # noqa: E501
     """
diff --git a/samples/openapi3/client/petstore/python-legacy/test/test_fake_api.py b/samples/openapi3/client/petstore/python-legacy/test/test_fake_api.py
index 0f4028bc96b..a485b1f91c9 100644
--- a/samples/openapi3/client/petstore/python-legacy/test/test_fake_api.py
+++ b/samples/openapi3/client/petstore/python-legacy/test/test_fake_api.py
@@ -13,10 +13,13 @@
 from __future__ import absolute_import
 
 import unittest
+try:
+    from unittest.mock import patch
+except ImportError:
+    from mock import patch
 
 import petstore_api
 from petstore_api.api.fake_api import FakeApi  # noqa: E501
-from petstore_api.rest import ApiException
 
 
 class TestFakeApi(unittest.TestCase):
@@ -126,6 +129,18 @@ class TestFakeApi(unittest.TestCase):
         """
         pass
 
+    def test_headers_parameter(self):
+        """Test case for the _headers are passed by the user
+
+        To test any optional parameter  # noqa: E501
+        """
+        api = petstore_api.api.PetApi()
+        with patch("petstore_api.api_client.ApiClient.call_api") as mock_method:
+            value_headers = {"Header1": "value1"}
+            api.find_pets_by_status(["Cat"], _headers=value_headers)
+            args, _ = mock_method.call_args
+            self.assertEqual(args, ('/pet/findByStatus', 'GET', {}, [('status', ['Cat'])], {'Accept': 'application/json', 'Header1': 'value1'})
+)
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/samples/openapi3/client/petstore/python-legacy/test_python2.sh b/samples/openapi3/client/petstore/python-legacy/test_python2.sh
index dbf254b0961..722b3ee5e23 100755
--- a/samples/openapi3/client/petstore/python-legacy/test_python2.sh
+++ b/samples/openapi3/client/petstore/python-legacy/test_python2.sh
@@ -20,6 +20,7 @@ fi
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
 
 ### run tests
+tox -l
 tox -e py27 || exit 1
 
 ### static analysis of code
diff --git a/samples/openapi3/client/petstore/python/.openapi-generator/FILES b/samples/openapi3/client/petstore/python/.openapi-generator/FILES
index 4b9b1323443..68c32cfe706 100644
--- a/samples/openapi3/client/petstore/python/.openapi-generator/FILES
+++ b/samples/openapi3/client/petstore/python/.openapi-generator/FILES
@@ -45,6 +45,7 @@ docs/FakePostInlineAdditionalPropertiesPayloadArrayData.md
 docs/File.md
 docs/FileSchemaTestClass.md
 docs/Foo.md
+docs/FooObject.md
 docs/FormatTest.md
 docs/Fruit.md
 docs/FruitReq.md
@@ -158,6 +159,7 @@ petstore_api/model/fake_post_inline_additional_properties_payload_array_data.py
 petstore_api/model/file.py
 petstore_api/model/file_schema_test_class.py
 petstore_api/model/foo.py
+petstore_api/model/foo_object.py
 petstore_api/model/format_test.py
 petstore_api/model/fruit.py
 petstore_api/model/fruit_req.py
diff --git a/samples/openapi3/client/petstore/python/README.md b/samples/openapi3/client/petstore/python/README.md
index f8ceed3eb8e..4eaa47c54ee 100644
--- a/samples/openapi3/client/petstore/python/README.md
+++ b/samples/openapi3/client/petstore/python/README.md
@@ -9,7 +9,7 @@ This Python package is automatically generated by the [OpenAPI Generator](https:
 
 ## Requirements.
 
-Python >= 3.6
+Python >=3.6
 
 ## Installation & Usage
 ### pip install
@@ -174,6 +174,7 @@ Class | Method | HTTP request | Description
  - [File](docs/File.md)
  - [FileSchemaTestClass](docs/FileSchemaTestClass.md)
  - [Foo](docs/Foo.md)
+ - [FooObject](docs/FooObject.md)
  - [FormatTest](docs/FormatTest.md)
  - [Fruit](docs/Fruit.md)
  - [FruitReq](docs/FruitReq.md)
diff --git a/samples/openapi3/client/petstore/python/docs/FooObject.md b/samples/openapi3/client/petstore/python/docs/FooObject.md
new file mode 100644
index 00000000000..55a7fc671ef
--- /dev/null
+++ b/samples/openapi3/client/petstore/python/docs/FooObject.md
@@ -0,0 +1,13 @@
+# FooObject
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**prop1** | **[{str: (bool, date, datetime, dict, float, int, list, str, none_type)}]** |  | [optional] 
+**prop2** | **{str: (bool, date, datetime, dict, float, int, list, str, none_type)}** |  | [optional] 
+**any string name** | **bool, date, datetime, dict, float, int, list, str, none_type** | any string name can be used but the value must be the correct type | [optional]
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/another_fake_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/another_fake_api.py
index 52d1fc410d3..503decf303f 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/another_fake_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/another_fake_api.py
@@ -119,6 +119,10 @@ class AnotherFakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -150,6 +154,9 @@ class AnotherFakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/default_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/default_api.py
index 26a35b8e65f..8ba49f05e76 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/default_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/default_api.py
@@ -107,6 +107,10 @@ class DefaultApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -138,6 +142,9 @@ class DefaultApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/fake_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/fake_api.py
index dd2db14c8ad..9ebd02954cf 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/fake_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/fake_api.py
@@ -1720,6 +1720,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1751,6 +1755,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1787,6 +1794,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1818,6 +1829,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1853,6 +1867,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1884,6 +1902,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1920,6 +1941,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -1951,6 +1976,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -1987,6 +2015,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2018,6 +2050,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2055,6 +2090,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2086,6 +2125,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2123,6 +2165,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2154,6 +2200,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2188,6 +2237,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2219,6 +2272,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2257,6 +2313,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2288,6 +2348,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2326,6 +2389,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2357,6 +2424,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2393,6 +2463,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2424,6 +2498,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2459,6 +2536,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2490,6 +2571,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2525,6 +2609,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2556,6 +2644,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2592,6 +2683,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2623,6 +2718,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2659,6 +2757,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2690,6 +2792,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2728,6 +2833,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2759,6 +2868,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2800,6 +2912,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2831,6 +2947,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2873,6 +2992,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2904,6 +3027,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -2960,6 +3086,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -2991,6 +3121,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3042,6 +3175,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3073,6 +3210,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3118,6 +3258,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3149,6 +3293,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3192,6 +3339,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3223,6 +3374,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3264,6 +3418,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3295,6 +3453,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3345,6 +3506,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3376,6 +3541,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3421,6 +3589,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3452,6 +3624,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3489,6 +3664,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3520,6 +3699,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3560,6 +3742,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3591,6 +3777,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -3628,6 +3817,10 @@ class FakeApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -3659,6 +3852,9 @@ class FakeApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py
index 0284c348b36..a6c187b0251 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/fake_classname_tags_123_api.py
@@ -121,6 +121,10 @@ class FakeClassnameTags123Api(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -152,6 +156,9 @@ class FakeClassnameTags123Api(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/pet_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/pet_api.py
index d555b6995ad..2f87475abf7 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/pet_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/pet_api.py
@@ -472,6 +472,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -503,6 +507,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -543,6 +550,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -574,6 +585,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -614,6 +628,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -645,6 +663,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -685,6 +706,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -716,6 +741,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -756,6 +784,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -787,6 +819,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -826,6 +861,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -857,6 +896,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -898,6 +940,10 @@ class PetApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -929,6 +975,9 @@ class PetApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/store_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/store_api.py
index c1cb69094fe..f5f1d16cbee 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/store_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/store_api.py
@@ -267,6 +267,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -298,6 +302,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -335,6 +342,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -366,6 +377,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -404,6 +418,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -435,6 +453,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -474,6 +495,10 @@ class StoreApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -505,6 +530,9 @@ class StoreApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api/user_api.py b/samples/openapi3/client/petstore/python/petstore_api/api/user_api.py
index da2217633ff..81bcdeb6d86 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api/user_api.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api/user_api.py
@@ -460,6 +460,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -491,6 +495,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -530,6 +537,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -561,6 +572,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -600,6 +614,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -631,6 +649,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -671,6 +692,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -702,6 +727,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -741,6 +769,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -772,6 +804,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -813,6 +848,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -844,6 +883,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -882,6 +924,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -913,6 +959,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
@@ -953,6 +1002,10 @@ class UserApi(object):
             _check_return_type (bool): specifies if type checking
                 should be done one the data received from the server.
                 Default is True.
+            _spec_property_naming (bool): True if the variable names in the input data
+                are serialized names, as specified in the OpenAPI document.
+                False if the variable names in the input data
+                are pythonic names, e.g. snake case (default)
             _content_type (str/None): force body content-type.
                 Default is None and content-type will be predicted by allowed
                 content-types and body.
@@ -984,6 +1037,9 @@ class UserApi(object):
         kwargs['_check_return_type'] = kwargs.get(
             '_check_return_type', True
         )
+        kwargs['_spec_property_naming'] = kwargs.get(
+            '_spec_property_naming', False
+        )
         kwargs['_content_type'] = kwargs.get(
             '_content_type')
         kwargs['_host_index'] = kwargs.get('_host_index')
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api_client.py b/samples/openapi3/client/petstore/python/petstore_api/api_client.py
index 86cddf1a7b2..f29efaa1ce1 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api_client.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api_client.py
@@ -680,7 +680,8 @@ class Endpoint(object):
             '_return_http_data_only',
             '_check_input_type',
             '_check_return_type',
-            '_content_type'
+            '_content_type',
+            '_spec_property_naming'
         ])
         self.params_map['nullable'].extend(['_request_timeout'])
         self.validations = root_map['validations']
@@ -694,6 +695,7 @@ class Endpoint(object):
             '_return_http_data_only': (bool,),
             '_check_input_type': (bool,),
             '_check_return_type': (bool,),
+            '_spec_property_naming': (bool,),
             '_content_type': (none_type, str)
         }
         self.openapi_types.update(extra_types)
@@ -730,7 +732,7 @@ class Endpoint(object):
                 value,
                 self.openapi_types[key],
                 [key],
-                False,
+                kwargs['_spec_property_naming'],
                 kwargs['_check_input_type'],
                 configuration=self.api_client.configuration
             )
@@ -758,11 +760,11 @@ class Endpoint(object):
                 base_name = self.attribute_map[param_name]
                 if (param_location == 'form' and
                         self.openapi_types[param_name] == (file_type,)):
-                    params['file'][param_name] = [param_value]
+                    params['file'][base_name] = [param_value]
                 elif (param_location == 'form' and
                         self.openapi_types[param_name] == ([file_type],)):
                     # param_value is already a list
-                    params['file'][param_name] = param_value
+                    params['file'][base_name] = param_value
                 elif param_location in {'form', 'query'}:
                     param_value_full = (base_name, param_value)
                     params[param_location].append(param_value_full)
diff --git a/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py b/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py
new file mode 100644
index 00000000000..5c2113edd1c
--- /dev/null
+++ b/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py
@@ -0,0 +1,259 @@
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import re  # noqa: F401
+import sys  # noqa: F401
+
+from petstore_api.model_utils import (  # noqa: F401
+    ApiTypeError,
+    ModelComposed,
+    ModelNormal,
+    ModelSimple,
+    cached_property,
+    change_keys_js_to_python,
+    convert_js_args_to_python_args,
+    date,
+    datetime,
+    file_type,
+    none_type,
+    validate_get_composed_info,
+    OpenApiModel
+)
+from petstore_api.exceptions import ApiAttributeError
+
+
+
+class FooObject(ModelNormal):
+    """NOTE: This class is auto generated by OpenAPI Generator.
+    Ref: https://openapi-generator.tech
+
+    Do not edit the class manually.
+
+    Attributes:
+      allowed_values (dict): The key is the tuple path to the attribute
+          and the for var_name this is (var_name,). The value is a dict
+          with a capitalized key describing the allowed value and an allowed
+          value. These dicts store the allowed enum values.
+      attribute_map (dict): The key is attribute name
+          and the value is json key in definition.
+      discriminator_value_class_map (dict): A dict to go from the discriminator
+          variable value to the discriminator class name.
+      validations (dict): The key is the tuple path to the attribute
+          and the for var_name this is (var_name,). The value is a dict
+          that stores validations for max_length, min_length, max_items,
+          min_items, exclusive_maximum, inclusive_maximum, exclusive_minimum,
+          inclusive_minimum, and regex.
+      additional_properties_type (tuple): A tuple of classes accepted
+          as additional properties values.
+    """
+
+    allowed_values = {
+    }
+
+    validations = {
+    }
+
+    @cached_property
+    def additional_properties_type():
+        """
+        This must be a method because a model may have properties that are
+        of type self, this must run after the class is loaded
+        """
+        return (bool, date, datetime, dict, float, int, list, str, none_type,)  # noqa: E501
+
+    _nullable = False
+
+    @cached_property
+    def openapi_types():
+        """
+        This must be a method because a model may have properties that are
+        of type self, this must run after the class is loaded
+
+        Returns
+            openapi_types (dict): The key is attribute name
+                and the value is attribute type.
+        """
+        return {
+            'prop1': ([{str: (bool, date, datetime, dict, float, int, list, str, none_type)}],),  # noqa: E501
+            'prop2': ({str: (bool, date, datetime, dict, float, int, list, str, none_type)},),  # noqa: E501
+        }
+
+    @cached_property
+    def discriminator():
+        return None
+
+
+    attribute_map = {
+        'prop1': 'prop1',  # noqa: E501
+        'prop2': 'prop2',  # noqa: E501
+    }
+
+    read_only_vars = {
+    }
+
+    _composed_schemas = {}
+
+    @classmethod
+    @convert_js_args_to_python_args
+    def _from_openapi_data(cls, *args, **kwargs):  # noqa: E501
+        """FooObject - a model defined in OpenAPI
+
+        Keyword Args:
+            _check_type (bool): if True, values for parameters in openapi_types
+                                will be type checked and a TypeError will be
+                                raised if the wrong type is input.
+                                Defaults to True
+            _path_to_item (tuple/list): This is a list of keys or values to
+                                drill down to the model in received_data
+                                when deserializing a response
+            _spec_property_naming (bool): True if the variable names in the input data
+                                are serialized names, as specified in the OpenAPI document.
+                                False if the variable names in the input data
+                                are pythonic names, e.g. snake case (default)
+            _configuration (Configuration): the instance to use when
+                                deserializing a file_type parameter.
+                                If passed, type conversion is attempted
+                                If omitted no type conversion is done.
+            _visited_composed_classes (tuple): This stores a tuple of
+                                classes that we have traveled through so that
+                                if we see that class again we will not use its
+                                discriminator again.
+                                When traveling through a discriminator, the
+                                composed schema that is
+                                is traveled through is added to this set.
+                                For example if Animal has a discriminator
+                                petType and we pass in "Dog", and the class Dog
+                                allOf includes Animal, we move through Animal
+                                once using the discriminator, and pick Dog.
+                                Then in Dog, we will make an instance of the
+                                Animal class but this time we won't travel
+                                through its discriminator because we passed in
+                                _visited_composed_classes = (Animal,)
+            prop1 ([{str: (bool, date, datetime, dict, float, int, list, str, none_type)}]): [optional]  # noqa: E501
+            prop2 ({str: (bool, date, datetime, dict, float, int, list, str, none_type)}): [optional]  # noqa: E501
+        """
+
+        _check_type = kwargs.pop('_check_type', True)
+        _spec_property_naming = kwargs.pop('_spec_property_naming', False)
+        _path_to_item = kwargs.pop('_path_to_item', ())
+        _configuration = kwargs.pop('_configuration', None)
+        _visited_composed_classes = kwargs.pop('_visited_composed_classes', ())
+
+        self = super(OpenApiModel, cls).__new__(cls)
+
+        if args:
+            raise ApiTypeError(
+                "Invalid positional arguments=%s passed to %s. Remove those invalid positional arguments." % (
+                    args,
+                    self.__class__.__name__,
+                ),
+                path_to_item=_path_to_item,
+                valid_classes=(self.__class__,),
+            )
+
+        self._data_store = {}
+        self._check_type = _check_type
+        self._spec_property_naming = _spec_property_naming
+        self._path_to_item = _path_to_item
+        self._configuration = _configuration
+        self._visited_composed_classes = _visited_composed_classes + (self.__class__,)
+
+        for var_name, var_value in kwargs.items():
+            if var_name not in self.attribute_map and \
+                        self._configuration is not None and \
+                        self._configuration.discard_unknown_keys and \
+                        self.additional_properties_type is None:
+                # discard variable.
+                continue
+            setattr(self, var_name, var_value)
+        return self
+
+    required_properties = set([
+        '_data_store',
+        '_check_type',
+        '_spec_property_naming',
+        '_path_to_item',
+        '_configuration',
+        '_visited_composed_classes',
+    ])
+
+    @convert_js_args_to_python_args
+    def __init__(self, *args, **kwargs):  # noqa: E501
+        """FooObject - a model defined in OpenAPI
+
+        Keyword Args:
+            _check_type (bool): if True, values for parameters in openapi_types
+                                will be type checked and a TypeError will be
+                                raised if the wrong type is input.
+                                Defaults to True
+            _path_to_item (tuple/list): This is a list of keys or values to
+                                drill down to the model in received_data
+                                when deserializing a response
+            _spec_property_naming (bool): True if the variable names in the input data
+                                are serialized names, as specified in the OpenAPI document.
+                                False if the variable names in the input data
+                                are pythonic names, e.g. snake case (default)
+            _configuration (Configuration): the instance to use when
+                                deserializing a file_type parameter.
+                                If passed, type conversion is attempted
+                                If omitted no type conversion is done.
+            _visited_composed_classes (tuple): This stores a tuple of
+                                classes that we have traveled through so that
+                                if we see that class again we will not use its
+                                discriminator again.
+                                When traveling through a discriminator, the
+                                composed schema that is
+                                is traveled through is added to this set.
+                                For example if Animal has a discriminator
+                                petType and we pass in "Dog", and the class Dog
+                                allOf includes Animal, we move through Animal
+                                once using the discriminator, and pick Dog.
+                                Then in Dog, we will make an instance of the
+                                Animal class but this time we won't travel
+                                through its discriminator because we passed in
+                                _visited_composed_classes = (Animal,)
+            prop1 ([{str: (bool, date, datetime, dict, float, int, list, str, none_type)}]): [optional]  # noqa: E501
+            prop2 ({str: (bool, date, datetime, dict, float, int, list, str, none_type)}): [optional]  # noqa: E501
+        """
+
+        _check_type = kwargs.pop('_check_type', True)
+        _spec_property_naming = kwargs.pop('_spec_property_naming', False)
+        _path_to_item = kwargs.pop('_path_to_item', ())
+        _configuration = kwargs.pop('_configuration', None)
+        _visited_composed_classes = kwargs.pop('_visited_composed_classes', ())
+
+        if args:
+            raise ApiTypeError(
+                "Invalid positional arguments=%s passed to %s. Remove those invalid positional arguments." % (
+                    args,
+                    self.__class__.__name__,
+                ),
+                path_to_item=_path_to_item,
+                valid_classes=(self.__class__,),
+            )
+
+        self._data_store = {}
+        self._check_type = _check_type
+        self._spec_property_naming = _spec_property_naming
+        self._path_to_item = _path_to_item
+        self._configuration = _configuration
+        self._visited_composed_classes = _visited_composed_classes + (self.__class__,)
+
+        for var_name, var_value in kwargs.items():
+            if var_name not in self.attribute_map and \
+                        self._configuration is not None and \
+                        self._configuration.discard_unknown_keys and \
+                        self.additional_properties_type is None:
+                # discard variable.
+                continue
+            setattr(self, var_name, var_value)
+            if var_name in self.read_only_vars:
+                raise ApiAttributeError(f"`{var_name}` is a read-only attribute. Use `from_openapi_data` to instantiate "
+                                     f"class with read only attributes.")
diff --git a/samples/openapi3/client/petstore/python/petstore_api/model_utils.py b/samples/openapi3/client/petstore/python/petstore_api/model_utils.py
index c723626fc49..6414688b772 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/model_utils.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/model_utils.py
@@ -1657,6 +1657,7 @@ def model_to_dict(model_instance, serialize=True):
             attribute_map
     """
     result = {}
+    extract_item = lambda item: (item[0], model_to_dict(item[1], serialize=serialize)) if hasattr(item[1], '_data_store') else item
 
     model_instances = [model_instance]
     if model_instance._composed_schemas:
@@ -1686,14 +1687,17 @@ def model_to_dict(model_instance, serialize=True):
                            res.append(v)
                        elif isinstance(v, ModelSimple):
                            res.append(v.value)
+                       elif isinstance(v, dict):
+                           res.append(dict(map(
+                               extract_item,
+                               v.items()
+                           )))
                        else:
                            res.append(model_to_dict(v, serialize=serialize))
                    result[attr] = res
             elif isinstance(value, dict):
                 result[attr] = dict(map(
-                    lambda item: (item[0],
-                                  model_to_dict(item[1], serialize=serialize))
-                    if hasattr(item[1], '_data_store') else item,
+                    extract_item,
                     value.items()
                 ))
             elif isinstance(value, ModelSimple):
diff --git a/samples/openapi3/client/petstore/python/petstore_api/models/__init__.py b/samples/openapi3/client/petstore/python/petstore_api/models/__init__.py
index 5e9f7f3bfaa..170e786575f 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/models/__init__.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/models/__init__.py
@@ -48,6 +48,7 @@ from petstore_api.model.fake_post_inline_additional_properties_payload_array_dat
 from petstore_api.model.file import File
 from petstore_api.model.file_schema_test_class import FileSchemaTestClass
 from petstore_api.model.foo import Foo
+from petstore_api.model.foo_object import FooObject
 from petstore_api.model.format_test import FormatTest
 from petstore_api.model.fruit import Fruit
 from petstore_api.model.fruit_req import FruitReq
diff --git a/samples/openapi3/client/petstore/python/test/test_foo_object.py b/samples/openapi3/client/petstore/python/test/test_foo_object.py
new file mode 100644
index 00000000000..9e04e6ddf7a
--- /dev/null
+++ b/samples/openapi3/client/petstore/python/test/test_foo_object.py
@@ -0,0 +1,35 @@
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by: https://openapi-generator.tech
+"""
+
+
+import sys
+import unittest
+
+import petstore_api
+from petstore_api.model.foo_object import FooObject
+
+
+class TestFooObject(unittest.TestCase):
+    """FooObject unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def testFooObject(self):
+        """Test FooObject"""
+        # FIXME: construct object with mandatory attributes with example values
+        # model = FooObject()  # noqa: E501
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python/tests_manual/test_api_validation.py b/samples/openapi3/client/petstore/python/tests_manual/test_api_validation.py
index 696b05e548b..c04427530e1 100644
--- a/samples/openapi3/client/petstore/python/tests_manual/test_api_validation.py
+++ b/samples/openapi3/client/petstore/python/tests_manual/test_api_validation.py
@@ -163,3 +163,14 @@ class ApiClientTests(unittest.TestCase):
             }
             response = MockResponse(data=json.dumps(data))
             deserialized = api_client.deserialize(response, (format_test.FormatTest,), True)
+
+    def test_sanitize_for_serialization(self):
+        data = {
+            "prop1": [{"key1": "val1"}],
+            "prop2": {"key2": "val2"}
+        }
+        from petstore_api.model.foo_object import FooObject
+        # the property named prop1 of this model is a list of dict
+        foo_object = FooObject(prop1=data["prop1"], prop2=data["prop2"])
+        result = self.api_client.sanitize_for_serialization(foo_object)
+        self.assertEqual(data, result)
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/pom.xml b/samples/openapi3/client/petstore/spring-cloud-async/pom.xml
index 950b9bbe353..d236e452710 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/pom.xml
+++ b/samples/openapi3/client/petstore/spring-cloud-async/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -33,10 +33,11 @@
     </dependencyManagement>
 
     <dependencies>
+        <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java
index 72f18a32505..99e382d22bf 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Parameters;
@@ -29,7 +30,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Pet", description = "the Pet API")
 public interface PetApi {
@@ -41,6 +44,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -68,6 +72,7 @@ public interface PetApi {
      * @return Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -96,6 +101,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -126,6 +132,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -156,6 +163,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -186,6 +194,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -216,6 +225,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -246,6 +256,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java
index cd943ad8770..ce28c335838 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/StoreApi.java
@@ -29,7 +29,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Store", description = "the Store API")
 public interface StoreApi {
@@ -43,6 +45,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -66,6 +69,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -95,6 +99,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -121,6 +126,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java
index d6bd9b72b1e..043fd45a392 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/api/UserApi.java
@@ -30,7 +30,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "User", description = "the User API")
 public interface UserApi {
@@ -43,6 +45,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -65,6 +68,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -87,6 +91,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -111,6 +116,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -136,6 +142,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -163,6 +170,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -187,6 +195,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -212,6 +221,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java
index cb69c674a1e..03e4a4ce0b5 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Category.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
-@Schema(name = "Category",description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Category", description = "A category for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java
index 0ef610e38f0..ea4f1e40264 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
-@Schema(name = "ApiResponse",description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java
index 528598b79ea..e624a0d7c1f 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,13 +15,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
-@Schema(name = "Order",description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java
index 7c2986fea84..ddff66759ba 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Pet.java
@@ -17,13 +17,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
-@Schema(name = "Pet",description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java
index 27166f687a2..5c3ac82ba6e 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/Tag.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
-@Schema(name = "Tag",description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java
index ba24f681c1d..328569672eb 100644
--- a/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/client/petstore/spring-cloud-async/src/main/java/org/openapitools/model/User.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
-@Schema(name = "User",description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-date-time/pom.xml b/samples/openapi3/client/petstore/spring-cloud-date-time/pom.xml
index 9f8de9c14cd..cd2a2017c6c 100644
--- a/samples/openapi3/client/petstore/spring-cloud-date-time/pom.xml
+++ b/samples/openapi3/client/petstore/spring-cloud-date-time/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -33,10 +33,11 @@
     </dependencyManagement>
 
     <dependencies>
+        <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java b/samples/openapi3/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java
index bd799ae55a4..fe29d68a572 100644
--- a/samples/openapi3/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-date-time/src/main/java/org/openapitools/api/DefaultApi.java
@@ -5,6 +5,7 @@
  */
 package org.openapitools.api;
 
+import org.springframework.format.annotation.DateTimeFormat;
 import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import io.swagger.v3.oas.annotations.Operation;
@@ -28,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Default", description = "the Default API")
 public interface DefaultApi {
@@ -43,8 +46,7 @@ public interface DefaultApi {
      * @return OK (status code 200)
      */
     @Operation(
-        summary = "",
-        tags = {  },
+        operationId = "get",
         responses = {
             @ApiResponse(responseCode = "200", description = "OK")
         }
@@ -54,10 +56,10 @@ public interface DefaultApi {
         value = "/thingy/{date}"
     )
     ResponseEntity<Void> get(
-        @Parameter(name = "date", description = "A date path parameter", required = true, schema = @Schema(description = "")) @PathVariable("date") @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @NotNull @Parameter(name = "dateTime", description = "A date-time query parameter", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "dateTime", required = true) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
-        @Parameter(name = "X-Order-Date", description = "A date header parameter", required = true, schema = @Schema(description = "")) @RequestHeader(value = "X-Order-Date", required = true) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate xOrderDate,
-        @Parameter(name = "loginDate", description = "A date cookie parameter", schema = @Schema(description = "")) @CookieValue("loginDate") @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate loginDate
+        @Parameter(name = "date", description = "A date path parameter", required = true, schema = @Schema(description = "")) @PathVariable("date") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @NotNull @Parameter(name = "dateTime", description = "A date-time query parameter", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "dateTime", required = true) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "X-Order-Date", description = "A date header parameter", required = true, schema = @Schema(description = "")) @RequestHeader(value = "X-Order-Date", required = true) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate xOrderDate,
+        @Parameter(name = "loginDate", description = "A date cookie parameter", schema = @Schema(description = "")) @CookieValue("loginDate") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate loginDate
     );
 
 
@@ -70,8 +72,7 @@ public interface DefaultApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
-        summary = "",
-        tags = {  },
+        operationId = "updatePetWithForm",
         responses = {
             @ApiResponse(responseCode = "405", description = "Invalid input")
         }
@@ -82,8 +83,8 @@ public interface DefaultApi {
         consumes = "application/x-www-form-urlencoded"
     )
     ResponseEntity<Void> updatePetWithForm(
-        @Parameter(name = "date", description = "A date path parameter", required = true, schema = @Schema(description = "")) @PathVariable("date") @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "visitDate", description = "Updated last vist timestamp", schema = @Schema(description = "")) @RequestParam(value="visitDate", required=false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime visitDate
+        @Parameter(name = "date", description = "A date path parameter", required = true, schema = @Schema(description = "")) @PathVariable("date") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "visitDate", description = "Updated last vist timestamp", schema = @Schema(description = "")) @RequestParam(value="visitDate", required=false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime visitDate
     );
 
 }
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/.openapi-generator/FILES b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/.openapi-generator/FILES
index 5248511085f..682ec1ebc9a 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/.openapi-generator/FILES
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/.openapi-generator/FILES
@@ -31,6 +31,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -38,6 +39,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/pom.xml b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/pom.xml
index 6cf023f501f..899cb60d2d7 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/pom.xml
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -33,10 +33,11 @@
     </dependencyManagement>
 
     <dependencies>
+        <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 19999726fe7..c37a73915a4 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -27,7 +27,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "AnotherFake", description = "the AnotherFake API")
 public interface AnotherFakeApi {
@@ -40,6 +42,7 @@ public interface AnotherFakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "call123testSpecialTags",
         summary = "To test special tags",
         tags = { "$another-fake?" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeApi.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeApi.java
index 1dd2e1db8bb..1bc20732af7 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,11 +7,13 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -35,7 +37,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Fake", description = "the Fake API")
 public interface FakeApi {
@@ -48,6 +52,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createXmlItem",
         summary = "creates an XmlItem",
         tags = { "fake" },
         responses = {
@@ -72,7 +77,7 @@ public interface FakeApi {
      * @return Output boolean (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterBooleanSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output boolean", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Boolean.class)))
@@ -96,7 +101,7 @@ public interface FakeApi {
      * @return Output composite (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterCompositeSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output composite", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  OuterComposite.class)))
@@ -120,7 +125,7 @@ public interface FakeApi {
      * @return Output number (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterNumberSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output number", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  BigDecimal.class)))
@@ -144,7 +149,7 @@ public interface FakeApi {
      * @return Output string (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterStringSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output string", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class)))
@@ -168,7 +173,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithFileSchema",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -192,7 +197,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithQueryParams",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -217,6 +222,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClientModel",
         summary = "To test \"client\" model",
         tags = { "fake" },
         responses = {
@@ -256,6 +262,7 @@ public interface FakeApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "testEndpointParameters",
         summary = "Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트",
         tags = { "fake" },
         responses = {
@@ -282,8 +289,8 @@ public interface FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @RequestParam(value="float", required=false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @RequestParam(value="string", required=false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestParam("binary") MultipartFile binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @RequestParam(value="date", required=false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @RequestParam(value="dateTime", required=false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @RequestParam(value="date", required=false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @RequestParam(value="dateTime", required=false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @RequestParam(value="password", required=false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @RequestParam(value="callback", required=false) String paramCallback
     );
@@ -305,6 +312,7 @@ public interface FakeApi {
      *         or Not found (status code 404)
      */
     @Operation(
+        operationId = "testEnumParameters",
         summary = "To test enum parameters",
         tags = { "fake" },
         responses = {
@@ -342,6 +350,7 @@ public interface FakeApi {
      * @return Someting wrong (status code 400)
      */
     @Operation(
+        operationId = "testGroupParameters",
         summary = "Fake endpoint to test group parameters (optional)",
         tags = { "fake" },
         responses = {
@@ -369,6 +378,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testInlineAdditionalProperties",
         summary = "test inline additionalProperties",
         tags = { "fake" },
         responses = {
@@ -393,6 +403,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testJsonFormData",
         summary = "test json serialization of form data",
         tags = { "fake" },
         responses = {
@@ -422,7 +433,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testQueryParameterCollectionFormat",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java
index cc503e6ae21..fd9a8e3e74e 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/FakeClassnameTags123Api.java
@@ -27,7 +27,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "FakeClassnameTags123", description = "the FakeClassnameTags123 API")
 public interface FakeClassnameTags123Api {
@@ -40,6 +42,7 @@ public interface FakeClassnameTags123Api {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClassname",
         summary = "To test class name in snake case",
         tags = { "fake_classname_tags 123#$%^" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/PetApi.java
index d720b78ba1a..b1e7a64a7a9 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -29,7 +30,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Pet", description = "the Pet API")
 public interface PetApi {
@@ -42,6 +45,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -71,6 +75,7 @@ public interface PetApi {
      *         or Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -100,6 +105,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -130,6 +136,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -160,6 +167,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -191,6 +199,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -222,6 +231,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -252,6 +262,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
@@ -283,6 +294,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFileWithRequiredFile",
         summary = "uploads an image (required)",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/StoreApi.java
index 88848f55a78..d30b583bf68 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Store", description = "the Store API")
 public interface StoreApi {
@@ -42,6 +44,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -65,6 +68,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -94,6 +98,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -120,6 +125,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/UserApi.java
index f07ada0583b..310149ab5ea 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "User", description = "the User API")
 public interface UserApi {
@@ -42,6 +44,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -64,6 +67,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -86,6 +90,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -110,6 +115,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -135,6 +141,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -162,6 +169,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -186,6 +194,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -211,6 +220,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 0c57ae7dd14..88ea058c0c5 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index b5285ec2f29..0d4d67f1a9e 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index f8ca38c286d..219d797ee64 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index dfd28ccb996..b2245551ad3 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
-  @Schema(name = "mapString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_string", required = false)
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
-  @Schema(name = "mapNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_number", required = false)
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
-  @Schema(name = "mapInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "map_integer", required = false)
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
-  @Schema(name = "mapBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "map_boolean", required = false)
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
-  @Schema(name = "mapArrayInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_integer", required = false)
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
-  @Schema(name = "mapArrayAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_anytype", required = false)
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
-  @Schema(name = "mapMapString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_string", required = false)
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
-  @Schema(name = "mapMapAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_anytype", required = false)
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
-  @Schema(name = "anytype1", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_1", required = false)
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
-  @Schema(name = "anytype2", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_2", required = false)
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
-  @Schema(name = "anytype3", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_3", required = false)
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5fea577ab44..ea102c40ed2 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index e6eee612a24..7a3a5d839f8 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index d7116bd7572..22e47f1bc1c 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index d2022be266f..91f47a9e83e 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Animal.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Animal.java
index 6f096d5069e..ef0fc61b5b6 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Animal.java
@@ -14,19 +14,21 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
-  @Schema(name = "className", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "className", required = true)
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
-  @Schema(name = "color", defaultValue = "")
-
-
+  
+  @Schema(name = "color", required = false)
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index ebe36ad761a..ad560c9d834 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
-  @Schema(name = "arrayArrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayArrayNumber", required = false)
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 8158dd44ab8..4409856d5a3 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
-  @Schema(name = "arrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayNumber", required = false)
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayTest.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayTest.java
index 420010561bc..fd25397b6b6 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
-  @Schema(name = "arrayOfString", defaultValue = "")
-
-
+  
+  @Schema(name = "array_of_string", required = false)
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
-  @Schema(name = "arrayArrayOfInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_integer", required = false)
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
-  @Schema(name = "arrayArrayOfModel", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_model", required = false)
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCat.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCat.java
index 7f4a080ad8d..275a075f527 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCat.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -72,9 +75,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -83,7 +85,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCatAllOf.java
index d0a47ab5127..3640a6301af 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +104,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Capitalization.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Capitalization.java
index 92d9a7245f1..80d6c5b2851 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
-  @Schema(name = "smallCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "smallCamel", required = false)
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
-  @Schema(name = "capitalCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "CapitalCamel", required = false)
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
-  @Schema(name = "smallSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "small_Snake", required = false)
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
-  @Schema(name = "capitalSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "Capital_Snake", required = false)
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
-  @Schema(name = "scAETHFlowPoints", defaultValue = "")
-
-
+  
+  @Schema(name = "SCA_ETH_Flow_Points", required = false)
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
-  @Schema(name = "ATT_NAME", defaultValue = "Name of the pet ")
-
-
+  
+  @Schema(name = "ATT_NAME", description = "Name of the pet ", required = false)
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Cat.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Cat.java
index 2e496fb4acc..0b3c8b8759b 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/CatAllOf.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/CatAllOf.java
index b732a62b1bc..19ffd6fffea 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Category.java
index 038fc8df3af..66dd429525d 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ClassModel.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ClassModel.java
index fa2a736f4fb..13a83893e61 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@Schema(name = "ClassModel",description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ClassModel", description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "_class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Client.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Client.java
index e11bd4ff1b1..9fbd7e3b433 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Client.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
-  @Schema(name = "client", defaultValue = "")
-
-
+  
+  @Schema(name = "client", required = false)
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Dog.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Dog.java
index ed5dc71a4ba..36f36600daf 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/DogAllOf.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/DogAllOf.java
index 2c99bc376c3..cc0bafc92e3 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumArrays.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumArrays.java
index e1b2df0716a..c3e82d4c028 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
-  @Schema(name = "justSymbol", defaultValue = "")
-
-
+  
+  @Schema(name = "just_symbol", required = false)
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
-  @Schema(name = "arrayEnum", defaultValue = "")
-
-
+  
+  @Schema(name = "array_enum", required = false)
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumClass.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumClass.java
index e3d30c1ad45..4e6027d16c4 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumClass.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumTest.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumTest.java
index 938af53e2b8..19ea0acc7a7 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
-  @Schema(name = "enumString", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_string", required = false)
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
-  @Schema(name = "enumStringRequired", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "enum_string_required", required = true)
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
-  @Schema(name = "enumInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_integer", required = false)
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
-  @Schema(name = "enumNumber", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_number", required = false)
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
-  @Schema(name = "outerEnum", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "outerEnum", required = false)
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/File.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..a2ee29fbfd6
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@Schema(name = "File", description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @Schema(name = "sourceURI", description = "Test capitalization", required = false)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 0d1e9ca8495..77868e77410 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import java.net.URI;
 import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,24 +40,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
-  @Schema(name = "file", defaultValue = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  @Valid 
+  @Schema(name = "file", required = false)
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
-  @Schema(name = "files", defaultValue = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  @Valid 
+  @Schema(name = "files", required = false)
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FormatTest.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FormatTest.java
index 6546370cd32..0c14e2c93c1 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -17,12 +19,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
-  @Schema(name = "integer", defaultValue = "")
-
-@Min(10) @Max(100) 
+  @Min(10) @Max(100) 
+  @Schema(name = "integer", required = false)
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
-  @Schema(name = "int32", defaultValue = "")
-
-@Min(20) @Max(200) 
+  @Min(20) @Max(200) 
+  @Schema(name = "int32", required = false)
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
-  @Schema(name = "int64", defaultValue = "")
-
-
+  
+  @Schema(name = "int64", required = false)
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
-  @Schema(name = "number", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
+  @Schema(name = "number", required = true)
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
-  @Schema(name = "_float", defaultValue = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
+  @DecimalMin("54.3") @DecimalMax("987.6") 
+  @Schema(name = "float", required = false)
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
-  @Schema(name = "_double", defaultValue = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
+  @DecimalMin("67.8") @DecimalMax("123.4") 
+  @Schema(name = "double", required = false)
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
-  @Schema(name = "string", defaultValue = "")
-
-@Pattern(regexp = "/[a-z]/i") 
+  @Pattern(regexp = "/[a-z]/i") 
+  @Schema(name = "string", required = false)
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
-  @Schema(name = "_byte", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "byte", required = true)
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
-  @Schema(name = "binary", defaultValue = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  @Valid 
+  @Schema(name = "binary", required = false)
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
-  @Schema(name = "date", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "date", required = true)
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", required = true, defaultValue = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
+  @NotNull @Size(min = 10, max = 64) 
+  @Schema(name = "password", required = true)
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
-  @Schema(name = "bigDecimal", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "BigDecimal", required = false)
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index dfb615a529f..ec728db1f14 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
-  @Schema(name = "foo", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "foo", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MapTest.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MapTest.java
index 3ff73062758..2da2a81ac82 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
-  @Schema(name = "mapMapOfString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_of_string", required = false)
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
-  @Schema(name = "mapOfEnumString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_of_enum_string", required = false)
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
-  @Schema(name = "directMap", defaultValue = "")
-
-
+  
+  @Schema(name = "direct_map", required = false)
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
-  @Schema(name = "indirectMap", defaultValue = "")
-
-
+  
+  @Schema(name = "indirect_map", required = false)
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 03a7be43cc4..9681c13f29d 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
-  @Schema(name = "map", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map", required = false)
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Model200Response.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Model200Response.java
index 77bf91649b0..48528166d1c 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@Schema(name = "200_response",description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "200_response", description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelApiResponse.java
index 2443600df22..4312ff4cc72 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelFile.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..de11d272cc3
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@Schema(name = "File",description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @Schema(name = "sourceURI", defaultValue = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelList.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..11078e7094e
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @Schema(name = "123-list", required = false)
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelReturn.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelReturn.java
index 0301a47e9f3..37c94a6aa80 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@Schema(name = "Return",description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Return", description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
-  @Schema(name = "_return", defaultValue = "")
-
-
+  
+  @Schema(name = "return", required = false)
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Name.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Name.java
index 62a16f80ee0..2876e64e991 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Name.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@Schema(name = "Name",description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Name", description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
-  @Schema(name = "snakeCase", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "snake_case", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
-  @Schema(name = "property", defaultValue = "")
-
-
+  
+  @Schema(name = "property", required = false)
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
-  @Schema(name = "_123number", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "123Number", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/NumberOnly.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/NumberOnly.java
index 521fad80d5a..05c9f0a7785 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
-  @Schema(name = "justNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "JustNumber", required = false)
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Order.java
index 05071bdfe2b..90b0d295718 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterComposite.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterComposite.java
index a721a3dde6a..14ff8ff8a9f 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
-  @Schema(name = "myNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "my_number", required = false)
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
-  @Schema(name = "myString", defaultValue = "")
-
-
+  
+  @Schema(name = "my_string", required = false)
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
-  @Schema(name = "myBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "my_boolean", required = false)
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterEnum.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterEnum.java
index ba0cca8a5e8..7fdf6f47de3 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/OuterEnum.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Pet.java
index 988eb317134..51d583a02e5 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Pet.java
@@ -20,12 +20,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -92,9 +95,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -112,10 +114,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -133,10 +133,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -159,10 +157,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -189,10 +185,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -210,9 +204,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -221,7 +214,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -248,7 +240,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 1c51770a8e6..1d95448aeef 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
-  @Schema(name = "baz", defaultValue = "")
-
-
+  
+  @Schema(name = "baz", required = false)
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/SpecialModelName.java
index 75f4be4e9f8..3dcdd9ee3f5 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
-  @Schema(name = "$specialPropertyName", defaultValue = "")
-
-
+  
+  @Schema(name = "$special[property.name]", required = false)
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Tag.java
index 8722df999bf..6b24df20471 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 19e9bf310f7..66695c3e847 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderExample.java
index c9a3762bc74..fdc9a096075 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", example = "what", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", example = "what", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", example = "1.234", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
-  @Schema(name = "floatItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "float_item", example = "1.234", required = true)
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", example = "-2", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", example = "-2", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", example = "true", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", example = "true", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", example = "[0, 1, 2, 3]", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", example = "[0, 1, 2, 3]", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/User.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/User.java
index 83152a15553..9aae48b0ceb 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/XmlItem.java b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/XmlItem.java
index 59a183db0f6..b886d9d3f61 100644
--- a/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/openapi3/client/petstore/spring-cloud-oas3-fakeapi/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
-  @Schema(name = "attributeString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_string", example = "string", required = false)
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
-  @Schema(name = "attributeNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "attribute_number", example = "1.234", required = false)
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
-  @Schema(name = "attributeInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_integer", example = "-2", required = false)
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
-  @Schema(name = "attributeBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_boolean", example = "true", required = false)
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
-  @Schema(name = "wrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "wrapped_array", required = false)
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
-  @Schema(name = "nameString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "name_string", example = "string", required = false)
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
-  @Schema(name = "nameNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "name_number", example = "1.234", required = false)
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
-  @Schema(name = "nameInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "name_integer", example = "-2", required = false)
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
-  @Schema(name = "nameBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "name_boolean", example = "true", required = false)
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
-  @Schema(name = "nameArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_array", required = false)
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
-  @Schema(name = "nameWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_wrapped_array", required = false)
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
-  @Schema(name = "prefixString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_string", example = "string", required = false)
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
-  @Schema(name = "prefixNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_number", example = "1.234", required = false)
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
-  @Schema(name = "prefixInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_integer", example = "-2", required = false)
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
-  @Schema(name = "prefixBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_boolean", example = "true", required = false)
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
-  @Schema(name = "prefixArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_array", required = false)
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
-  @Schema(name = "prefixWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_wrapped_array", required = false)
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
-  @Schema(name = "namespaceString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_string", example = "string", required = false)
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
-  @Schema(name = "namespaceNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "namespace_number", example = "1.234", required = false)
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
-  @Schema(name = "namespaceInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_integer", example = "-2", required = false)
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
-  @Schema(name = "namespaceBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_boolean", example = "true", required = false)
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
-  @Schema(name = "namespaceArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_array", required = false)
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
-  @Schema(name = "namespaceWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_wrapped_array", required = false)
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
-  @Schema(name = "prefixNsString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_string", example = "string", required = false)
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
-  @Schema(name = "prefixNsNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_ns_number", example = "1.234", required = false)
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
-  @Schema(name = "prefixNsInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_integer", example = "-2", required = false)
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
-  @Schema(name = "prefixNsBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_boolean", example = "true", required = false)
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
-  @Schema(name = "prefixNsArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_array", required = false)
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
-  @Schema(name = "prefixNsWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_wrapped_array", required = false)
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/pom.xml b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/pom.xml
index 648e8d7f995..933cfb2a5ff 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/pom.xml
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -33,10 +33,11 @@
     </dependencyManagement>
 
     <dependencies>
+        <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
index 41d32bcb8e5..512f73c2c59 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
@@ -6,7 +6,10 @@
 package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
+import org.springdoc.api.annotations.ParameterObject;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Parameters;
@@ -28,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Pet", description = "the Pet API")
 public interface PetApi {
@@ -40,6 +45,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -67,6 +73,7 @@ public interface PetApi {
      * @return Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -95,6 +102,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -112,7 +120,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @Parameter(name = "status", description = "Status values that need to be considered for filter", required = true, schema = @Schema(description = "", allowableValues = { "available", "pending", "sold" })) @Valid @RequestParam(value = "status", required = true) List<String> status,
-        final org.springframework.data.domain.Pageable pageable
+        @ParameterObject final Pageable pageable
     );
 
 
@@ -126,6 +134,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -143,7 +152,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @Parameter(name = "tags", description = "Tags to filter by", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        final org.springframework.data.domain.Pageable pageable
+        @ParameterObject final Pageable pageable
     );
 
 
@@ -157,6 +166,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -187,6 +197,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -217,6 +228,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -247,6 +259,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
index 975a2451fcc..ce3c67ac8f7 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Store", description = "the Store API")
 public interface StoreApi {
@@ -42,6 +44,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -65,6 +68,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -94,6 +98,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -120,6 +125,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
index 0c01703e1f5..72dba3efc87 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "User", description = "the User API")
 public interface UserApi {
@@ -42,6 +44,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -64,6 +67,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -86,6 +90,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -110,6 +115,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -135,6 +141,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -162,6 +169,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -186,6 +194,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -207,6 +216,7 @@ public interface UserApi {
      * @return endpoint configuration response (status code 200)
      */
     @Operation(
+        operationId = "logoutUserOptions",
         summary = "logoutUserOptions",
         tags = { "user" },
         responses = {
@@ -232,6 +242,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java
index cb69c674a1e..03e4a4ce0b5 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Category.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
-@Schema(name = "Category",description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Category", description = "A category for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
index 0ef610e38f0..ea4f1e40264 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
-@Schema(name = "ApiResponse",description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java
index 528598b79ea..e624a0d7c1f 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,13 +15,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
-@Schema(name = "Order",description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java
index 7c2986fea84..ddff66759ba 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Pet.java
@@ -17,13 +17,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
-@Schema(name = "Pet",description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java
index 27166f687a2..5c3ac82ba6e 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/Tag.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
-@Schema(name = "Tag",description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java
index ba24f681c1d..328569672eb 100644
--- a/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/client/petstore/spring-cloud-spring-pageable/src/main/java/org/openapitools/model/User.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
-@Schema(name = "User",description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud/pom.xml b/samples/openapi3/client/petstore/spring-cloud/pom.xml
index 6cf023f501f..899cb60d2d7 100644
--- a/samples/openapi3/client/petstore/spring-cloud/pom.xml
+++ b/samples/openapi3/client/petstore/spring-cloud/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -33,10 +33,11 @@
     </dependencyManagement>
 
     <dependencies>
+        <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java
index 348133a5cbd..f49cc0a5fcc 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Parameters;
@@ -28,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Pet", description = "the Pet API")
 public interface PetApi {
@@ -41,6 +44,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -70,6 +74,7 @@ public interface PetApi {
      * @return Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -98,6 +103,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -128,6 +134,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -158,6 +165,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -189,6 +197,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -221,6 +230,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -251,6 +261,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java
index c20ade100d7..58ce12ee8f9 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "Store", description = "the Store API")
 public interface StoreApi {
@@ -42,6 +44,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -65,6 +68,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -94,6 +98,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -120,6 +125,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java
index 35639141083..ffac4f85f78 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "User", description = "the User API")
 public interface UserApi {
@@ -42,6 +44,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -68,6 +71,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -94,6 +98,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -122,6 +127,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -150,6 +156,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -177,6 +184,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -201,6 +209,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -229,6 +238,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java
index 463de0ed39a..823adb2ae4d 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Category.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
-@Schema(name = "Category",description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Category", description = "A category for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-@Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
+  @Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java
index 0ef610e38f0..ea4f1e40264 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
-@Schema(name = "ApiResponse",description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java
index 528598b79ea..e624a0d7c1f 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,13 +15,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
-@Schema(name = "Order",description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java
index 7c2986fea84..ddff66759ba 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Pet.java
@@ -17,13 +17,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
-@Schema(name = "Pet",description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java
index 27166f687a2..5c3ac82ba6e 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/Tag.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
-@Schema(name = "Tag",description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java
index ba24f681c1d..328569672eb 100644
--- a/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/client/petstore/spring-cloud/src/main/java/org/openapitools/model/User.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
-@Schema(name = "User",description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/client/petstore/spring-stubs/.openapi-generator-ignore b/samples/openapi3/client/petstore/spring-stubs/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/openapi3/client/petstore/spring-stubs/.openapi-generator/FILES b/samples/openapi3/client/petstore/spring-stubs/.openapi-generator/FILES
new file mode 100644
index 00000000000..87837793235
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/.openapi-generator/FILES
@@ -0,0 +1,12 @@
+README.md
+pom.xml
+src/main/java/org/openapitools/api/ApiUtil.java
+src/main/java/org/openapitools/api/PetApi.java
+src/main/java/org/openapitools/api/StoreApi.java
+src/main/java/org/openapitools/api/UserApi.java
+src/main/java/org/openapitools/model/Category.java
+src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/Order.java
+src/main/java/org/openapitools/model/Pet.java
+src/main/java/org/openapitools/model/Tag.java
+src/main/java/org/openapitools/model/User.java
diff --git a/samples/openapi3/client/petstore/spring-stubs/.openapi-generator/VERSION b/samples/openapi3/client/petstore/spring-stubs/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/spring-stubs/README.md b/samples/openapi3/client/petstore/spring-stubs/README.md
new file mode 100644
index 00000000000..d43a1de307d
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/README.md
@@ -0,0 +1,27 @@
+
+# OpenAPI generated API stub
+
+Spring Framework stub
+
+
+## Overview
+This code was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
+By using the [OpenAPI-Spec](https://openapis.org), you can easily generate an API stub.
+This is an example of building API stub interfaces in Java using the Spring framework.
+
+The stubs generated can be used in your existing Spring-MVC or Spring-Boot application to create controller endpoints
+by adding ```@Controller``` classes that implement the interface. Eg:
+```java
+@Controller
+public class PetController implements PetApi {
+// implement all PetApi methods
+}
+```
+
+You can also use the interface to create [Spring-Cloud Feign clients](http://projects.spring.io/spring-cloud/spring-cloud.html#spring-cloud-feign-inheritance).Eg:
+```java
+@FeignClient(name="pet", url="http://petstore.swagger.io/v2")
+public interface PetClient extends PetApi {
+
+}
+```
diff --git a/samples/openapi3/client/petstore/spring-stubs/pom.xml b/samples/openapi3/client/petstore/spring-stubs/pom.xml
new file mode 100644
index 00000000000..b2890ab9d51
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/pom.xml
@@ -0,0 +1,66 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools.openapi3</groupId>
+    <artifactId>spring-stubs</artifactId>
+    <packaging>jar</packaging>
+    <name>spring-stubs</name>
+    <version>1.0.0</version>
+    <properties>
+        <java.version>1.8</java.version>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <springdoc.version>1.6.4</springdoc.version>
+    </properties>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.6.2</version>
+    </parent>
+    <build>
+        <sourceDirectory>src/main/java</sourceDirectory>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-commons</artifactId>
+        </dependency>
+          <!--SpringDoc dependencies -->
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
+        </dependency>
+        <!-- @Nullable annotation -->
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <version>3.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.dataformat</groupId>
+            <artifactId>jackson-dataformat-yaml</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.openapitools</groupId>
+            <artifactId>jackson-databind-nullable</artifactId>
+            <version>0.2.2</version>
+        </dependency>
+        <!-- Bean Validation API support -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/ApiUtil.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/ApiUtil.java
new file mode 100644
index 00000000000..1245b1dd0cc
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/ApiUtil.java
@@ -0,0 +1,19 @@
+package org.openapitools.api;
+
+import org.springframework.web.context.request.NativeWebRequest;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public class ApiUtil {
+    public static void setExampleResponse(NativeWebRequest req, String contentType, String example) {
+        try {
+            HttpServletResponse res = req.getNativeResponse(HttpServletResponse.class);
+            res.setCharacterEncoding("UTF-8");
+            res.addHeader("Content-Type", contentType);
+            res.getWriter().print(example);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java
new file mode 100644
index 00000000000..cbcfd453b59
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/PetApi.java
@@ -0,0 +1,359 @@
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+package org.openapitools.api;
+
+import org.openapitools.model.ModelApiResponse;
+import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Validated
+@Tag(name = "pet", description = "the pet API")
+public interface PetApi {
+
+    default Optional<NativeWebRequest> getRequest() {
+        return Optional.empty();
+    }
+
+    /**
+     * POST /pet : Add a new pet to the store
+     *
+     * @param body Pet object that needs to be added to the store (required)
+     * @return Invalid input (status code 405)
+     */
+    @Operation(
+        operationId = "addPet",
+        summary = "Add a new pet to the store",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "405", description = "Invalid input")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/pet",
+        consumes = "application/json"
+    )
+    default ResponseEntity<Void> addPet(
+        @Parameter(name = "body", description = "Pet object that needs to be added to the store", required = true, schema = @Schema(description = "")) @Valid @RequestBody Pet body
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * DELETE /pet/{petId} : Deletes a pet
+     *
+     * @param petId Pet id to delete (required)
+     * @param apiKey  (optional)
+     * @return Invalid pet value (status code 400)
+     */
+    @Operation(
+        operationId = "deletePet",
+        summary = "Deletes a pet",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid pet value")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.DELETE,
+        value = "/pet/{petId}"
+    )
+    default ResponseEntity<Void> deletePet(
+        @Parameter(name = "petId", description = "Pet id to delete", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId,
+        @Parameter(name = "api_key", description = "", schema = @Schema(description = "")) @RequestHeader(value = "api_key", required = false) String apiKey
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /pet/findByStatus : Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     *
+     * @param status Status values that need to be considered for filter (required)
+     * @return successful operation (status code 200)
+     *         or Invalid status value (status code 400)
+     */
+    @Operation(
+        operationId = "findPetsByStatus",
+        summary = "Finds Pets by status",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid status value")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/pet/findByStatus",
+        produces = "application/json"
+    )
+    default ResponseEntity<List<Pet>> findPetsByStatus(
+        @NotNull @Parameter(name = "status", description = "Status values that need to be considered for filter", required = true, schema = @Schema(description = "", allowableValues = { "available", "pending", "sold" })) @Valid @RequestParam(value = "status", required = true) List<String> status
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /pet/findByTags : Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     *
+     * @param tags Tags to filter by (required)
+     * @return successful operation (status code 200)
+     *         or Invalid tag value (status code 400)
+     * @deprecated
+     */
+    @Operation(
+        operationId = "findPetsByTags",
+        summary = "Finds Pets by tags",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid tag value")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/pet/findByTags",
+        produces = "application/json"
+    )
+    default ResponseEntity<List<Pet>> findPetsByTags(
+        @NotNull @Parameter(name = "tags", description = "Tags to filter by", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "tags", required = true) List<String> tags
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /pet/{petId} : Find pet by ID
+     * Returns a single pet
+     *
+     * @param petId ID of pet to return (required)
+     * @return successful operation (status code 200)
+     *         or Invalid ID supplied (status code 400)
+     *         or Pet not found (status code 404)
+     */
+    @Operation(
+        operationId = "getPetById",
+        summary = "Find pet by ID",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Pet not found")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/pet/{petId}",
+        produces = "application/json"
+    )
+    default ResponseEntity<Pet> getPetById(
+        @Parameter(name = "petId", description = "ID of pet to return", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * PUT /pet : Update an existing pet
+     *
+     * @param body Pet object that needs to be added to the store (required)
+     * @return Invalid ID supplied (status code 400)
+     *         or Pet not found (status code 404)
+     *         or Validation exception (status code 405)
+     */
+    @Operation(
+        operationId = "updatePet",
+        summary = "Update an existing pet",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Pet not found"),
+            @ApiResponse(responseCode = "405", description = "Validation exception")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.PUT,
+        value = "/pet",
+        consumes = "application/json"
+    )
+    default ResponseEntity<Void> updatePet(
+        @Parameter(name = "body", description = "Pet object that needs to be added to the store", required = true, schema = @Schema(description = "")) @Valid @RequestBody Pet body
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /pet/{petId} : Updates a pet in the store with form data
+     *
+     * @param petId ID of pet that needs to be updated (required)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
+     * @return Invalid input (status code 405)
+     */
+    @Operation(
+        operationId = "updatePetWithForm",
+        summary = "Updates a pet in the store with form data",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "405", description = "Invalid input")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/pet/{petId}",
+        consumes = "application/x-www-form-urlencoded"
+    )
+    default ResponseEntity<Void> updatePetWithForm(
+        @Parameter(name = "petId", description = "ID of pet that needs to be updated", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId,
+        @Parameter(name = "name", description = "Updated name of the pet", schema = @Schema(description = "")) @Valid @RequestPart(value = "name", required = false) String name,
+        @Parameter(name = "status", description = "Updated status of the pet", schema = @Schema(description = "")) @Valid @RequestPart(value = "status", required = false) String status
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /pet/{petId}/uploadImage : uploads an image
+     *
+     * @param petId ID of pet to update (required)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param file file to upload (optional)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "uploadFile",
+        summary = "uploads an image",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  ModelApiResponse.class)))
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/pet/{petId}/uploadImage",
+        produces = "application/json",
+        consumes = "multipart/form-data"
+    )
+    default ResponseEntity<ModelApiResponse> uploadFile(
+        @Parameter(name = "petId", description = "ID of pet to update", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId,
+        @Parameter(name = "additionalMetadata", description = "Additional data to pass to server", schema = @Schema(description = "")) @Valid @RequestPart(value = "additionalMetadata", required = false) String additionalMetadata,
+        @Parameter(name = "file", description = "file to upload", schema = @Schema(description = "")) @RequestPart(value = "file", required = false) MultipartFile file
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"code\" : 0, \"type\" : \"type\", \"message\" : \"message\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+}
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java
new file mode 100644
index 00000000000..4969341a44f
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/StoreApi.java
@@ -0,0 +1,189 @@
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+package org.openapitools.api;
+
+import java.util.Map;
+import org.openapitools.model.Order;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Validated
+@Tag(name = "store", description = "the store API")
+public interface StoreApi {
+
+    default Optional<NativeWebRequest> getRequest() {
+        return Optional.empty();
+    }
+
+    /**
+     * DELETE /store/order/{orderId} : Delete purchase order by ID
+     * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+     *
+     * @param orderId ID of the order that needs to be deleted (required)
+     * @return Invalid ID supplied (status code 400)
+     *         or Order not found (status code 404)
+     */
+    @Operation(
+        operationId = "deleteOrder",
+        summary = "Delete purchase order by ID",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Order not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.DELETE,
+        value = "/store/order/{orderId}"
+    )
+    default ResponseEntity<Void> deleteOrder(
+        @Parameter(name = "orderId", description = "ID of the order that needs to be deleted", required = true, schema = @Schema(description = "")) @PathVariable("orderId") String orderId
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /store/inventory : Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     *
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "getInventory",
+        summary = "Returns pet inventories by status",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Map.class)))
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/store/inventory",
+        produces = "application/json"
+    )
+    default ResponseEntity<Map<String, Integer>> getInventory(
+        
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /store/order/{orderId} : Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     *
+     * @param orderId ID of pet that needs to be fetched (required)
+     * @return successful operation (status code 200)
+     *         or Invalid ID supplied (status code 400)
+     *         or Order not found (status code 404)
+     */
+    @Operation(
+        operationId = "getOrderById",
+        summary = "Find purchase order by ID",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Order.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Order not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/store/order/{orderId}",
+        produces = "application/json"
+    )
+    default ResponseEntity<Order> getOrderById(
+        @Min(1L) @Max(5L) @Parameter(name = "orderId", description = "ID of pet that needs to be fetched", required = true, schema = @Schema(description = "")) @PathVariable("orderId") Long orderId
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Order> <id>123456789</id> <petId>123456789</petId> <quantity>123</quantity> <shipDate>2000-01-23T04:56:07.000Z</shipDate> <status>aeiou</status> <complete>true</complete> </Order>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /store/order : Place an order for a pet
+     *
+     * @param body order placed for purchasing the pet (required)
+     * @return successful operation (status code 200)
+     *         or Invalid Order (status code 400)
+     */
+    @Operation(
+        operationId = "placeOrder",
+        summary = "Place an order for a pet",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Order.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid Order")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/store/order",
+        produces = "application/json"
+    )
+    default ResponseEntity<Order> placeOrder(
+        @Parameter(name = "body", description = "order placed for purchasing the pet", required = true, schema = @Schema(description = "")) @Valid @RequestBody Order body
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Order> <id>123456789</id> <petId>123456789</petId> <quantity>123</quantity> <shipDate>2000-01-23T04:56:07.000Z</shipDate> <status>aeiou</status> <complete>true</complete> </Order>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+}
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java
new file mode 100644
index 00000000000..2db1089ce52
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/api/UserApi.java
@@ -0,0 +1,282 @@
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+package org.openapitools.api;
+
+import java.util.List;
+import java.time.OffsetDateTime;
+import org.openapitools.model.User;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Validated
+@Tag(name = "user", description = "the user API")
+public interface UserApi {
+
+    default Optional<NativeWebRequest> getRequest() {
+        return Optional.empty();
+    }
+
+    /**
+     * POST /user : Create user
+     * This can only be done by the logged in user.
+     *
+     * @param body Created user object (required)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "createUser",
+        summary = "Create user",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/user"
+    )
+    default ResponseEntity<Void> createUser(
+        @Parameter(name = "body", description = "Created user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody User body
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /user/createWithArray : Creates list of users with given input array
+     *
+     * @param body List of user object (required)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "createUsersWithArrayInput",
+        summary = "Creates list of users with given input array",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/user/createWithArray"
+    )
+    default ResponseEntity<Void> createUsersWithArrayInput(
+        @Parameter(name = "body", description = "List of user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody List<User> body
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /user/createWithList : Creates list of users with given input array
+     *
+     * @param body List of user object (required)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "createUsersWithListInput",
+        summary = "Creates list of users with given input array",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/user/createWithList"
+    )
+    default ResponseEntity<Void> createUsersWithListInput(
+        @Parameter(name = "body", description = "List of user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody List<User> body
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * DELETE /user/{username} : Delete user
+     * This can only be done by the logged in user.
+     *
+     * @param username The name that needs to be deleted (required)
+     * @return Invalid username supplied (status code 400)
+     *         or User not found (status code 404)
+     */
+    @Operation(
+        operationId = "deleteUser",
+        summary = "Delete user",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid username supplied"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.DELETE,
+        value = "/user/{username}"
+    )
+    default ResponseEntity<Void> deleteUser(
+        @Parameter(name = "username", description = "The name that needs to be deleted", required = true, schema = @Schema(description = "")) @PathVariable("username") String username
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /user/{username} : Get user by user name
+     *
+     * @param username The name that needs to be fetched. Use user1 for testing. (required)
+     * @return successful operation (status code 200)
+     *         or Invalid username supplied (status code 400)
+     *         or User not found (status code 404)
+     */
+    @Operation(
+        operationId = "getUserByName",
+        summary = "Get user by user name",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  User.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid username supplied"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/user/{username}",
+        produces = "application/json"
+    )
+    default ResponseEntity<User> getUserByName(
+        @Parameter(name = "username", description = "The name that needs to be fetched. Use user1 for testing.", required = true, schema = @Schema(description = "")) @PathVariable("username") String username
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"firstName\" : \"firstName\", \"lastName\" : \"lastName\", \"password\" : \"password\", \"userStatus\" : 6, \"phone\" : \"phone\", \"id\" : 0, \"email\" : \"email\", \"username\" : \"username\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<User> <id>123456789</id> <username>aeiou</username> <firstName>aeiou</firstName> <lastName>aeiou</lastName> <email>aeiou</email> <password>aeiou</password> <phone>aeiou</phone> <userStatus>123</userStatus> </User>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /user/login : Logs user into the system
+     *
+     * @param username The user name for login (required)
+     * @param password The password for login in clear text (required)
+     * @return successful operation (status code 200)
+     *         or Invalid username/password supplied (status code 400)
+     */
+    @Operation(
+        operationId = "loginUser",
+        summary = "Logs user into the system",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid username/password supplied")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/user/login",
+        produces = "application/json"
+    )
+    default ResponseEntity<String> loginUser(
+        @NotNull @Parameter(name = "username", description = "The user name for login", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "username", required = true) String username,
+        @NotNull @Parameter(name = "password", description = "The password for login in clear text", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "password", required = true) String password
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /user/logout : Logs out current logged in user session
+     *
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "logoutUser",
+        summary = "Logs out current logged in user session",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/user/logout"
+    )
+    default ResponseEntity<Void> logoutUser(
+        
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * PUT /user/{username} : Updated user
+     * This can only be done by the logged in user.
+     *
+     * @param username name that need to be deleted (required)
+     * @param body Updated user object (required)
+     * @return Invalid user supplied (status code 400)
+     *         or User not found (status code 404)
+     */
+    @Operation(
+        operationId = "updateUser",
+        summary = "Updated user",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid user supplied"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.PUT,
+        value = "/user/{username}"
+    )
+    default ResponseEntity<Void> updateUser(
+        @Parameter(name = "username", description = "name that need to be deleted", required = true, schema = @Schema(description = "")) @PathVariable("username") String username,
+        @Parameter(name = "body", description = "Updated user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody User body
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+}
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java
new file mode 100644
index 00000000000..03e4a4ce0b5
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Category.java
@@ -0,0 +1,108 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A category for a pet
+ */
+
+@Schema(name = "Category", description = "A category for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Category   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("name")
+  private String name;
+
+  public Category id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Category name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  
+  @Schema(name = "name", required = false)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Category category = (Category) o;
+    return Objects.equals(this.id, category.id) &&
+        Objects.equals(this.name, category.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Category {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java
new file mode 100644
index 00000000000..ea4f1e40264
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -0,0 +1,132 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Describes the result of uploading an image resource
+ */
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelApiResponse   {
+
+  @JsonProperty("code")
+  private Integer code;
+
+  @JsonProperty("type")
+  private String type;
+
+  @JsonProperty("message")
+  private String message;
+
+  public ModelApiResponse code(Integer code) {
+    this.code = code;
+    return this;
+  }
+
+  /**
+   * Get code
+   * @return code
+  */
+  
+  @Schema(name = "code", required = false)
+  public Integer getCode() {
+    return code;
+  }
+
+  public void setCode(Integer code) {
+    this.code = code;
+  }
+
+  public ModelApiResponse type(String type) {
+    this.type = type;
+    return this;
+  }
+
+  /**
+   * Get type
+   * @return type
+  */
+  
+  @Schema(name = "type", required = false)
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+  public ModelApiResponse message(String message) {
+    this.message = message;
+    return this;
+  }
+
+  /**
+   * Get message
+   * @return message
+  */
+  
+  @Schema(name = "message", required = false)
+  public String getMessage() {
+    return message;
+  }
+
+  public void setMessage(String message) {
+    this.message = message;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelApiResponse _apiResponse = (ModelApiResponse) o;
+    return Objects.equals(this.code, _apiResponse.code) &&
+        Objects.equals(this.type, _apiResponse.type) &&
+        Objects.equals(this.message, _apiResponse.message);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(code, type, message);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelApiResponse {\n");
+    sb.append("    code: ").append(toIndentedString(code)).append("\n");
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    message: ").append(toIndentedString(message)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java
new file mode 100644
index 00000000000..e624a0d7c1f
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Order.java
@@ -0,0 +1,245 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * An order for a pets from the pet store
+ */
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Order   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("petId")
+  private Long petId;
+
+  @JsonProperty("quantity")
+  private Integer quantity;
+
+  @JsonProperty("shipDate")
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
+  private OffsetDateTime shipDate;
+
+  /**
+   * Order Status
+   */
+  public enum StatusEnum {
+    PLACED("placed"),
+    
+    APPROVED("approved"),
+    
+    DELIVERED("delivered");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  @JsonProperty("status")
+  private StatusEnum status;
+
+  @JsonProperty("complete")
+  private Boolean complete = false;
+
+  public Order id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Order petId(Long petId) {
+    this.petId = petId;
+    return this;
+  }
+
+  /**
+   * Get petId
+   * @return petId
+  */
+  
+  @Schema(name = "petId", required = false)
+  public Long getPetId() {
+    return petId;
+  }
+
+  public void setPetId(Long petId) {
+    this.petId = petId;
+  }
+
+  public Order quantity(Integer quantity) {
+    this.quantity = quantity;
+    return this;
+  }
+
+  /**
+   * Get quantity
+   * @return quantity
+  */
+  
+  @Schema(name = "quantity", required = false)
+  public Integer getQuantity() {
+    return quantity;
+  }
+
+  public void setQuantity(Integer quantity) {
+    this.quantity = quantity;
+  }
+
+  public Order shipDate(OffsetDateTime shipDate) {
+    this.shipDate = shipDate;
+    return this;
+  }
+
+  /**
+   * Get shipDate
+   * @return shipDate
+  */
+  @Valid 
+  @Schema(name = "shipDate", required = false)
+  public OffsetDateTime getShipDate() {
+    return shipDate;
+  }
+
+  public void setShipDate(OffsetDateTime shipDate) {
+    this.shipDate = shipDate;
+  }
+
+  public Order status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+  /**
+   * Order Status
+   * @return status
+  */
+  
+  @Schema(name = "status", description = "Order Status", required = false)
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  public Order complete(Boolean complete) {
+    this.complete = complete;
+    return this;
+  }
+
+  /**
+   * Get complete
+   * @return complete
+  */
+  
+  @Schema(name = "complete", required = false)
+  public Boolean getComplete() {
+    return complete;
+  }
+
+  public void setComplete(Boolean complete) {
+    this.complete = complete;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Order order = (Order) o;
+    return Objects.equals(this.id, order.id) &&
+        Objects.equals(this.petId, order.petId) &&
+        Objects.equals(this.quantity, order.quantity) &&
+        Objects.equals(this.shipDate, order.shipDate) &&
+        Objects.equals(this.status, order.status) &&
+        Objects.equals(this.complete, order.complete);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, petId, quantity, shipDate, status, complete);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Order {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
+    sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
+    sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("    complete: ").append(toIndentedString(complete)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java
new file mode 100644
index 00000000000..ddff66759ba
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Pet.java
@@ -0,0 +1,261 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.model.Category;
+import org.openapitools.model.Tag;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A pet for sale in the pet store
+ */
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Pet   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("category")
+  private Category category;
+
+  @JsonProperty("name")
+  private String name;
+
+  @JsonProperty("photoUrls")
+  @Valid
+  private List<String> photoUrls = new ArrayList<>();
+
+  @JsonProperty("tags")
+  @Valid
+  private List<Tag> tags = null;
+
+  /**
+   * pet status in the store
+   */
+  public enum StatusEnum {
+    AVAILABLE("available"),
+    
+    PENDING("pending"),
+    
+    SOLD("sold");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  @JsonProperty("status")
+  private StatusEnum status;
+
+  public Pet id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Pet category(Category category) {
+    this.category = category;
+    return this;
+  }
+
+  /**
+   * Get category
+   * @return category
+  */
+  @Valid 
+  @Schema(name = "category", required = false)
+  public Category getCategory() {
+    return category;
+  }
+
+  public void setCategory(Category category) {
+    this.category = category;
+  }
+
+  public Pet name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public Pet photoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+    return this;
+  }
+
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+  /**
+   * Get photoUrls
+   * @return photoUrls
+  */
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
+  public List<String> getPhotoUrls() {
+    return photoUrls;
+  }
+
+  public void setPhotoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+  }
+
+  public Pet tags(List<Tag> tags) {
+    this.tags = tags;
+    return this;
+  }
+
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<>();
+    }
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+  /**
+   * Get tags
+   * @return tags
+  */
+  @Valid 
+  @Schema(name = "tags", required = false)
+  public List<Tag> getTags() {
+    return tags;
+  }
+
+  public void setTags(List<Tag> tags) {
+    this.tags = tags;
+  }
+
+  public Pet status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+  /**
+   * pet status in the store
+   * @return status
+  */
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Pet pet = (Pet) o;
+    return Objects.equals(this.id, pet.id) &&
+        Objects.equals(this.category, pet.category) &&
+        Objects.equals(this.name, pet.name) &&
+        Objects.equals(this.photoUrls, pet.photoUrls) &&
+        Objects.equals(this.tags, pet.tags) &&
+        Objects.equals(this.status, pet.status);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, category, name, photoUrls, tags, status);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Pet {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    category: ").append(toIndentedString(category)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+    sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java
new file mode 100644
index 00000000000..5c3ac82ba6e
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/Tag.java
@@ -0,0 +1,108 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A tag for a pet
+ */
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Tag   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("name")
+  private String name;
+
+  public Tag id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Tag name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  
+  @Schema(name = "name", required = false)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Tag tag = (Tag) o;
+    return Objects.equals(this.id, tag.id) &&
+        Objects.equals(this.name, tag.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Tag {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java
new file mode 100644
index 00000000000..328569672eb
--- /dev/null
+++ b/samples/openapi3/client/petstore/spring-stubs/src/main/java/org/openapitools/model/User.java
@@ -0,0 +1,252 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A User who is purchasing from the pet store
+ */
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class User   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("username")
+  private String username;
+
+  @JsonProperty("firstName")
+  private String firstName;
+
+  @JsonProperty("lastName")
+  private String lastName;
+
+  @JsonProperty("email")
+  private String email;
+
+  @JsonProperty("password")
+  private String password;
+
+  @JsonProperty("phone")
+  private String phone;
+
+  @JsonProperty("userStatus")
+  private Integer userStatus;
+
+  public User id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public User username(String username) {
+    this.username = username;
+    return this;
+  }
+
+  /**
+   * Get username
+   * @return username
+  */
+  
+  @Schema(name = "username", required = false)
+  public String getUsername() {
+    return username;
+  }
+
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public User firstName(String firstName) {
+    this.firstName = firstName;
+    return this;
+  }
+
+  /**
+   * Get firstName
+   * @return firstName
+  */
+  
+  @Schema(name = "firstName", required = false)
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public void setFirstName(String firstName) {
+    this.firstName = firstName;
+  }
+
+  public User lastName(String lastName) {
+    this.lastName = lastName;
+    return this;
+  }
+
+  /**
+   * Get lastName
+   * @return lastName
+  */
+  
+  @Schema(name = "lastName", required = false)
+  public String getLastName() {
+    return lastName;
+  }
+
+  public void setLastName(String lastName) {
+    this.lastName = lastName;
+  }
+
+  public User email(String email) {
+    this.email = email;
+    return this;
+  }
+
+  /**
+   * Get email
+   * @return email
+  */
+  
+  @Schema(name = "email", required = false)
+  public String getEmail() {
+    return email;
+  }
+
+  public void setEmail(String email) {
+    this.email = email;
+  }
+
+  public User password(String password) {
+    this.password = password;
+    return this;
+  }
+
+  /**
+   * Get password
+   * @return password
+  */
+  
+  @Schema(name = "password", required = false)
+  public String getPassword() {
+    return password;
+  }
+
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public User phone(String phone) {
+    this.phone = phone;
+    return this;
+  }
+
+  /**
+   * Get phone
+   * @return phone
+  */
+  
+  @Schema(name = "phone", required = false)
+  public String getPhone() {
+    return phone;
+  }
+
+  public void setPhone(String phone) {
+    this.phone = phone;
+  }
+
+  public User userStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+    return this;
+  }
+
+  /**
+   * User Status
+   * @return userStatus
+  */
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
+  public Integer getUserStatus() {
+    return userStatus;
+  }
+
+  public void setUserStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    User user = (User) o;
+    return Objects.equals(this.id, user.id) &&
+        Objects.equals(this.username, user.username) &&
+        Objects.equals(this.firstName, user.firstName) &&
+        Objects.equals(this.lastName, user.lastName) &&
+        Objects.equals(this.email, user.email) &&
+        Objects.equals(this.password, user.password) &&
+        Objects.equals(this.phone, user.phone) &&
+        Objects.equals(this.userStatus, user.userStatus);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class User {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
+    sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
+    sb.append("    email: ").append(toIndentedString(email)).append("\n");
+    sb.append("    password: ").append(toIndentedString(password)).append("\n");
+    sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
+    sb.append("    userStatus: ").append(toIndentedString(userStatus)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts
index 59a3ac16973..a2c52ae901e 100644
--- a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/apis/DefaultApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { Cat } from '../models/Cat';
@@ -44,6 +45,11 @@ export class DefaultApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -74,6 +80,11 @@ export class DefaultApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -104,6 +115,11 @@ export class DefaultApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/auth/auth.ts
index fa859aaa098..49340932e11 100644
--- a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/auth/auth.ts
@@ -24,6 +24,7 @@ export interface TokenProvider {
 
 
 export type AuthMethods = {
+    "default"?: SecurityAuthentication,
 }
 
 export type ApiKeyConfiguration = string;
@@ -32,6 +33,7 @@ export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
 export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
+    "default"?: SecurityAuthentication,
 }
 
 /**
@@ -44,6 +46,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
     if (!config) {
         return authMethods;
     }
+    authMethods["default"] = config["default"]
 
     return authMethods;
 }
\ No newline at end of file
diff --git a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/types/ObjectParamAPI.ts b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/types/ObjectParamAPI.ts
index d94a613229e..84ebc7d8c69 100644
--- a/samples/openapi3/client/petstore/typescript/builds/composed-schemas/types/ObjectParamAPI.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/composed-schemas/types/ObjectParamAPI.ts
@@ -50,21 +50,21 @@ export class ObjectDefaultApi {
     /**
      * @param param the request object
      */
-    public filePost(param: DefaultApiFilePostRequest, options?: Configuration): Promise<void> {
+    public filePost(param: DefaultApiFilePostRequest = {}, options?: Configuration): Promise<void> {
         return this.api.filePost(param.inlineObject,  options).toPromise();
     }
 
     /**
      * @param param the request object
      */
-    public petsFilteredPatch(param: DefaultApiPetsFilteredPatchRequest, options?: Configuration): Promise<void> {
+    public petsFilteredPatch(param: DefaultApiPetsFilteredPatchRequest = {}, options?: Configuration): Promise<void> {
         return this.api.petsFilteredPatch(param.petByAgePetByType,  options).toPromise();
     }
 
     /**
      * @param param the request object
      */
-    public petsPatch(param: DefaultApiPetsPatchRequest, options?: Configuration): Promise<void> {
+    public petsPatch(param: DefaultApiPetsPatchRequest = {}, options?: Configuration): Promise<void> {
         return this.api.petsPatch(param.catDog,  options).toPromise();
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts
index ff3b13bc845..e85797baebc 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/apis/PetApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { ApiResponse } from '../models/ApiResponse';
@@ -51,11 +52,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -88,11 +94,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("api_key", ObjectSerializer.serialize(apiKey, "string", ""));
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -125,11 +136,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -162,11 +178,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -195,11 +216,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -239,11 +265,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -304,11 +335,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -371,11 +407,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts
index 46cf6d33efc..821e181892b 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/apis/StoreApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { Order } from '../models/Order';
@@ -39,6 +40,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -58,11 +64,16 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -91,6 +102,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -127,6 +143,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts
index 99a7c43b2e5..9a87f64e9c5 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/apis/UserApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { User } from '../models/User';
@@ -49,11 +50,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -91,11 +97,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -133,11 +144,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -166,11 +182,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -198,6 +219,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -240,6 +266,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -258,11 +289,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -309,11 +345,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts
index 1f1d1ecac67..a67ed0e90cc 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/auth/auth.ts
@@ -66,6 +66,7 @@ export class PetstoreAuthAuthentication implements SecurityAuthentication {
 
 
 export type AuthMethods = {
+    "default"?: SecurityAuthentication,
     "api_key"?: SecurityAuthentication,
     "petstore_auth"?: SecurityAuthentication
 }
@@ -76,6 +77,7 @@ export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
 export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
+    "default"?: SecurityAuthentication,
     "api_key"?: ApiKeyConfiguration,
     "petstore_auth"?: OAuth2Configuration
 }
@@ -90,6 +92,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
     if (!config) {
         return authMethods;
     }
+    authMethods["default"] = config["default"]
 
     if (config["api_key"]) {
         authMethods["api_key"] = new ApiKeyAuthentication(
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/http/http.ts b/samples/openapi3/client/petstore/typescript/builds/default/http/http.ts
index a623aef1278..3b6e1461d92 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/http/http.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/http/http.ts
@@ -1,6 +1,8 @@
 // TODO: evaluate if we can easily get rid of this library
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
+import * as http from 'http';
+import * as https from 'https';
 // typings of url-parse are incorrect...
 // @ts-ignore
 import * as URLParse from "url-parse";
@@ -50,6 +52,7 @@ export class RequestContext {
     private headers: { [key: string]: string } = {};
     private body: RequestBody = undefined;
     private url: URLParse;
+    private agent: http.Agent | https.Agent | undefined = undefined;
 
     /**
      * Creates the request context using a http method and request resource url
@@ -122,6 +125,14 @@ export class RequestContext {
     public setHeaderParam(key: string, value: string): void  {
         this.headers[key] = value;
     }
+    
+    public setAgent(agent: http.Agent | https.Agent) {
+        this.agent = agent;
+    }
+
+    public getAgent(): http.Agent | https.Agent | undefined {
+        return this.agent;
+    }
 }
 
 export interface ResponseBody {
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/http/isomorphic-fetch.ts b/samples/openapi3/client/petstore/typescript/builds/default/http/isomorphic-fetch.ts
index ed390df7ce1..26d267cfc06 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/http/isomorphic-fetch.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/http/isomorphic-fetch.ts
@@ -12,6 +12,7 @@ export class IsomorphicFetchHttpLibrary implements HttpLibrary {
             method: method,
             body: body as any,
             headers: request.getHeaders(),
+            agent: request.getAgent(),
         }).then((resp: any) => {
             const headers: { [name: string]: string } = {};
             resp.headers.forEach((value: string, name: string) => {
diff --git a/samples/openapi3/client/petstore/typescript/builds/default/types/ObjectParamAPI.ts b/samples/openapi3/client/petstore/typescript/builds/default/types/ObjectParamAPI.ts
index 829c9d0363a..a590e3ca492 100644
--- a/samples/openapi3/client/petstore/typescript/builds/default/types/ObjectParamAPI.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/default/types/ObjectParamAPI.ts
@@ -244,7 +244,7 @@ export class ObjectStoreApi {
      * Returns pet inventories by status
      * @param param the request object
      */
-    public getInventory(param: StoreApiGetInventoryRequest, options?: Configuration): Promise<{ [key: string]: number; }> {
+    public getInventory(param: StoreApiGetInventoryRequest = {}, options?: Configuration): Promise<{ [key: string]: number; }> {
         return this.api.getInventory( options).toPromise();
     }
 
@@ -409,7 +409,7 @@ export class ObjectUserApi {
      * Logs out current logged in user session
      * @param param the request object
      */
-    public logoutUser(param: UserApiLogoutUserRequest, options?: Configuration): Promise<void> {
+    public logoutUser(param: UserApiLogoutUserRequest = {}, options?: Configuration): Promise<void> {
         return this.api.logoutUser( options).toPromise();
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts
index 9ae92b9b212..f11b208baf2 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/apis/PetApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi.ts';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi.ts';
 import {Configuration} from '../configuration.ts';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
 import {ObjectSerializer} from '../models/ObjectSerializer.ts';
 import {ApiException} from './exception.ts';
 import {canConsumeForm, isCodeInRange} from '../util.ts';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { ApiResponse } from '../models/ApiResponse.ts';
@@ -49,11 +50,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -86,11 +92,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("api_key", ObjectSerializer.serialize(apiKey, "string", ""));
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -123,11 +134,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -160,11 +176,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -193,11 +214,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -237,11 +263,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -302,11 +333,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -369,11 +405,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts
index 767734aed21..f83700b35cf 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/apis/StoreApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi.ts';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi.ts';
 import {Configuration} from '../configuration.ts';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
 import {ObjectSerializer} from '../models/ObjectSerializer.ts';
 import {ApiException} from './exception.ts';
 import {canConsumeForm, isCodeInRange} from '../util.ts';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { Order } from '../models/Order.ts';
@@ -37,6 +38,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -56,11 +62,16 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -89,6 +100,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -125,6 +141,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts
index 7caf789d015..f2de9aeb598 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/apis/UserApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi.ts';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi.ts';
 import {Configuration} from '../configuration.ts';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http.ts';
 import {ObjectSerializer} from '../models/ObjectSerializer.ts';
 import {ApiException} from './exception.ts';
 import {canConsumeForm, isCodeInRange} from '../util.ts';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { User } from '../models/User.ts';
@@ -47,11 +48,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -89,11 +95,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -131,11 +142,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -164,11 +180,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -196,6 +217,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -238,6 +264,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -256,11 +287,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -307,11 +343,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts
index e7609dabbec..85086dde5fa 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/auth/auth.ts
@@ -64,6 +64,7 @@ export class PetstoreAuthAuthentication implements SecurityAuthentication {
 
 
 export type AuthMethods = {
+    "default"?: SecurityAuthentication,
     "api_key"?: SecurityAuthentication,
     "petstore_auth"?: SecurityAuthentication
 }
@@ -74,6 +75,7 @@ export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
 export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
+    "default"?: SecurityAuthentication,
     "api_key"?: ApiKeyConfiguration,
     "petstore_auth"?: OAuth2Configuration
 }
@@ -88,6 +90,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
     if (!config) {
         return authMethods;
     }
+    authMethods["default"] = config["default"]
 
     if (config["api_key"]) {
         authMethods["api_key"] = new ApiKeyAuthentication(
diff --git a/samples/openapi3/client/petstore/typescript/builds/deno/types/ObjectParamAPI.ts b/samples/openapi3/client/petstore/typescript/builds/deno/types/ObjectParamAPI.ts
index ebcd714f27c..a6988e3ef19 100644
--- a/samples/openapi3/client/petstore/typescript/builds/deno/types/ObjectParamAPI.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/deno/types/ObjectParamAPI.ts
@@ -244,7 +244,7 @@ export class ObjectStoreApi {
      * Returns pet inventories by status
      * @param param the request object
      */
-    public getInventory(param: StoreApiGetInventoryRequest, options?: Configuration): Promise<{ [key: string]: number; }> {
+    public getInventory(param: StoreApiGetInventoryRequest = {}, options?: Configuration): Promise<{ [key: string]: number; }> {
         return this.api.getInventory( options).toPromise();
     }
 
@@ -409,7 +409,7 @@ export class ObjectUserApi {
      * Logs out current logged in user session
      * @param param the request object
      */
-    public logoutUser(param: UserApiLogoutUserRequest, options?: Configuration): Promise<void> {
+    public logoutUser(param: UserApiLogoutUserRequest = {}, options?: Configuration): Promise<void> {
         return this.api.logoutUser( options).toPromise();
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts
index 9b8cd23af11..81a75d96bce 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/PetApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 import { injectable } from "inversify";
 
@@ -53,12 +54,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -90,12 +92,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("api_key", ObjectSerializer.serialize(apiKey, "string", ""));
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -127,12 +130,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -164,12 +168,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -197,12 +202,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -241,12 +247,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -306,12 +313,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -373,12 +381,13 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts
index 356d2cfbc4d..4115b9dc6d9 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/StoreApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 import { injectable } from "inversify";
 
@@ -41,6 +42,7 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
 
         return requestContext;
     }
@@ -60,12 +62,13 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -93,6 +96,7 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
 
         return requestContext;
     }
@@ -129,6 +133,7 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts
index 3991a33b383..124034df988 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/apis/UserApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 import { injectable } from "inversify";
 
@@ -51,12 +52,13 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -93,12 +95,13 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -135,12 +138,13 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -168,12 +172,13 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -200,6 +205,7 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
 
         return requestContext;
     }
@@ -242,6 +248,7 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
+        
 
         return requestContext;
     }
@@ -260,12 +267,13 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
@@ -311,12 +319,13 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
         }
+        
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/http/http.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/http/http.ts
index a623aef1278..3b6e1461d92 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/http/http.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/http/http.ts
@@ -1,6 +1,8 @@
 // TODO: evaluate if we can easily get rid of this library
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
+import * as http from 'http';
+import * as https from 'https';
 // typings of url-parse are incorrect...
 // @ts-ignore
 import * as URLParse from "url-parse";
@@ -50,6 +52,7 @@ export class RequestContext {
     private headers: { [key: string]: string } = {};
     private body: RequestBody = undefined;
     private url: URLParse;
+    private agent: http.Agent | https.Agent | undefined = undefined;
 
     /**
      * Creates the request context using a http method and request resource url
@@ -122,6 +125,14 @@ export class RequestContext {
     public setHeaderParam(key: string, value: string): void  {
         this.headers[key] = value;
     }
+    
+    public setAgent(agent: http.Agent | https.Agent) {
+        this.agent = agent;
+    }
+
+    public getAgent(): http.Agent | https.Agent | undefined {
+        return this.agent;
+    }
 }
 
 export interface ResponseBody {
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/http/isomorphic-fetch.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/http/isomorphic-fetch.ts
index ed390df7ce1..26d267cfc06 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/http/isomorphic-fetch.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/http/isomorphic-fetch.ts
@@ -12,6 +12,7 @@ export class IsomorphicFetchHttpLibrary implements HttpLibrary {
             method: method,
             body: body as any,
             headers: request.getHeaders(),
+            agent: request.getAgent(),
         }).then((resp: any) => {
             const headers: { [name: string]: string } = {};
             resp.headers.forEach((value: string, name: string) => {
diff --git a/samples/openapi3/client/petstore/typescript/builds/inversify/types/ObjectParamAPI.ts b/samples/openapi3/client/petstore/typescript/builds/inversify/types/ObjectParamAPI.ts
index 829c9d0363a..a590e3ca492 100644
--- a/samples/openapi3/client/petstore/typescript/builds/inversify/types/ObjectParamAPI.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/inversify/types/ObjectParamAPI.ts
@@ -244,7 +244,7 @@ export class ObjectStoreApi {
      * Returns pet inventories by status
      * @param param the request object
      */
-    public getInventory(param: StoreApiGetInventoryRequest, options?: Configuration): Promise<{ [key: string]: number; }> {
+    public getInventory(param: StoreApiGetInventoryRequest = {}, options?: Configuration): Promise<{ [key: string]: number; }> {
         return this.api.getInventory( options).toPromise();
     }
 
@@ -409,7 +409,7 @@ export class ObjectUserApi {
      * Logs out current logged in user session
      * @param param the request object
      */
-    public logoutUser(param: UserApiLogoutUserRequest, options?: Configuration): Promise<void> {
+    public logoutUser(param: UserApiLogoutUserRequest = {}, options?: Configuration): Promise<void> {
         return this.api.logoutUser( options).toPromise();
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts
index a2b9813749e..fe20e750a83 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/PetApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { ApiResponse } from '../models/ApiResponse';
@@ -49,11 +50,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -86,11 +92,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("api_key", ObjectSerializer.serialize(apiKey, "string", ""));
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -123,11 +134,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -160,11 +176,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -193,11 +214,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -237,11 +263,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -302,11 +333,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -369,11 +405,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts
index a8bc438d420..020bb040706 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/StoreApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { Order } from '../models/Order';
@@ -37,6 +38,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -56,11 +62,16 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -89,6 +100,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -125,6 +141,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts
index 3f493441c39..75cb0453992 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/apis/UserApi.ts
@@ -1,10 +1,11 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { User } from '../models/User';
@@ -47,11 +48,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -89,11 +95,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -131,11 +142,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -164,11 +180,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -196,6 +217,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -238,6 +264,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -256,11 +287,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -307,11 +343,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts
index d8924a4216c..ed2aa2bfe6d 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/auth/auth.ts
@@ -64,6 +64,7 @@ export class PetstoreAuthAuthentication implements SecurityAuthentication {
 
 
 export type AuthMethods = {
+    "default"?: SecurityAuthentication,
     "api_key"?: SecurityAuthentication,
     "petstore_auth"?: SecurityAuthentication
 }
@@ -74,6 +75,7 @@ export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
 export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
+    "default"?: SecurityAuthentication,
     "api_key"?: ApiKeyConfiguration,
     "petstore_auth"?: OAuth2Configuration
 }
@@ -88,6 +90,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
     if (!config) {
         return authMethods;
     }
+    authMethods["default"] = config["default"]
 
     if (config["api_key"]) {
         authMethods["api_key"] = new ApiKeyAuthentication(
diff --git a/samples/openapi3/client/petstore/typescript/builds/jquery/types/ObjectParamAPI.ts b/samples/openapi3/client/petstore/typescript/builds/jquery/types/ObjectParamAPI.ts
index 829c9d0363a..a590e3ca492 100644
--- a/samples/openapi3/client/petstore/typescript/builds/jquery/types/ObjectParamAPI.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/jquery/types/ObjectParamAPI.ts
@@ -244,7 +244,7 @@ export class ObjectStoreApi {
      * Returns pet inventories by status
      * @param param the request object
      */
-    public getInventory(param: StoreApiGetInventoryRequest, options?: Configuration): Promise<{ [key: string]: number; }> {
+    public getInventory(param: StoreApiGetInventoryRequest = {}, options?: Configuration): Promise<{ [key: string]: number; }> {
         return this.api.getInventory( options).toPromise();
     }
 
@@ -409,7 +409,7 @@ export class ObjectUserApi {
      * Logs out current logged in user session
      * @param param the request object
      */
-    public logoutUser(param: UserApiLogoutUserRequest, options?: Configuration): Promise<void> {
+    public logoutUser(param: UserApiLogoutUserRequest = {}, options?: Configuration): Promise<void> {
         return this.api.logoutUser( options).toPromise();
     }
 
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts
index ff3b13bc845..e85797baebc 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/PetApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { ApiResponse } from '../models/ApiResponse';
@@ -51,11 +52,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -88,11 +94,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("api_key", ObjectSerializer.serialize(apiKey, "string", ""));
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -125,11 +136,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -162,11 +178,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -195,11 +216,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -239,11 +265,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -304,11 +335,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -371,11 +407,16 @@ export class PetApiRequestFactory extends BaseAPIRequestFactory {
             requestContext.setHeaderParam("Content-Type", contentType);
         }
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["petstore_auth"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts
index 46cf6d33efc..821e181892b 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/StoreApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { Order } from '../models/Order';
@@ -39,6 +40,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -58,11 +64,16 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -91,6 +102,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -127,6 +143,11 @@ export class StoreApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts
index 99a7c43b2e5..9a87f64e9c5 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/apis/UserApi.ts
@@ -1,12 +1,13 @@
 // TODO: better import syntax?
-import { BaseAPIRequestFactory, RequiredError } from './baseapi';
+import {BaseAPIRequestFactory, RequiredError} from './baseapi';
 import {Configuration} from '../configuration';
-import { RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
+import {RequestContext, HttpMethod, ResponseContext, HttpFile} from '../http/http';
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
 import {ObjectSerializer} from '../models/ObjectSerializer';
 import {ApiException} from './exception';
 import {canConsumeForm, isCodeInRange} from '../util';
+import {SecurityAuthentication} from '../auth/auth';
 
 
 import { User } from '../models/User';
@@ -49,11 +50,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -91,11 +97,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -133,11 +144,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -166,11 +182,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -198,6 +219,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -240,6 +266,11 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         }
 
 
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
+        }
 
         return requestContext;
     }
@@ -258,11 +289,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         requestContext.setHeaderParam("Accept", "application/json, */*;q=0.8")
 
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
@@ -309,11 +345,16 @@ export class UserApiRequestFactory extends BaseAPIRequestFactory {
         );
         requestContext.setBody(serializedBody);
 
-        let authMethod = null;
+        let authMethod: SecurityAuthentication | undefined;
         // Apply auth methods
         authMethod = _config.authMethods["api_key"]
-        if (authMethod) {
-            await authMethod.applySecurityAuthentication(requestContext);
+        if (authMethod?.applySecurityAuthentication) {
+            await authMethod?.applySecurityAuthentication(requestContext);
+        }
+        
+        const defaultAuth: SecurityAuthentication | undefined = _options?.authMethods?.default || this.configuration?.authMethods?.default
+        if (defaultAuth?.applySecurityAuthentication) {
+            await defaultAuth?.applySecurityAuthentication(requestContext);
         }
 
         return requestContext;
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts
index 1f1d1ecac67..a67ed0e90cc 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/auth/auth.ts
@@ -66,6 +66,7 @@ export class PetstoreAuthAuthentication implements SecurityAuthentication {
 
 
 export type AuthMethods = {
+    "default"?: SecurityAuthentication,
     "api_key"?: SecurityAuthentication,
     "petstore_auth"?: SecurityAuthentication
 }
@@ -76,6 +77,7 @@ export type HttpBearerConfiguration = { tokenProvider: TokenProvider };
 export type OAuth2Configuration = { accessToken: string };
 
 export type AuthMethodsConfiguration = {
+    "default"?: SecurityAuthentication,
     "api_key"?: ApiKeyConfiguration,
     "petstore_auth"?: OAuth2Configuration
 }
@@ -90,6 +92,7 @@ export function configureAuthMethods(config: AuthMethodsConfiguration | undefine
     if (!config) {
         return authMethods;
     }
+    authMethods["default"] = config["default"]
 
     if (config["api_key"]) {
         authMethods["api_key"] = new ApiKeyAuthentication(
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/http/http.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/http/http.ts
index a623aef1278..3b6e1461d92 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/http/http.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/http/http.ts
@@ -1,6 +1,8 @@
 // TODO: evaluate if we can easily get rid of this library
 import * as FormData from "form-data";
 import { URLSearchParams } from 'url';
+import * as http from 'http';
+import * as https from 'https';
 // typings of url-parse are incorrect...
 // @ts-ignore
 import * as URLParse from "url-parse";
@@ -50,6 +52,7 @@ export class RequestContext {
     private headers: { [key: string]: string } = {};
     private body: RequestBody = undefined;
     private url: URLParse;
+    private agent: http.Agent | https.Agent | undefined = undefined;
 
     /**
      * Creates the request context using a http method and request resource url
@@ -122,6 +125,14 @@ export class RequestContext {
     public setHeaderParam(key: string, value: string): void  {
         this.headers[key] = value;
     }
+    
+    public setAgent(agent: http.Agent | https.Agent) {
+        this.agent = agent;
+    }
+
+    public getAgent(): http.Agent | https.Agent | undefined {
+        return this.agent;
+    }
 }
 
 export interface ResponseBody {
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/http/isomorphic-fetch.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/http/isomorphic-fetch.ts
index ed390df7ce1..26d267cfc06 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/http/isomorphic-fetch.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/http/isomorphic-fetch.ts
@@ -12,6 +12,7 @@ export class IsomorphicFetchHttpLibrary implements HttpLibrary {
             method: method,
             body: body as any,
             headers: request.getHeaders(),
+            agent: request.getAgent(),
         }).then((resp: any) => {
             const headers: { [name: string]: string } = {};
             resp.headers.forEach((value: string, name: string) => {
diff --git a/samples/openapi3/client/petstore/typescript/builds/object_params/types/ObjectParamAPI.ts b/samples/openapi3/client/petstore/typescript/builds/object_params/types/ObjectParamAPI.ts
index 829c9d0363a..a590e3ca492 100644
--- a/samples/openapi3/client/petstore/typescript/builds/object_params/types/ObjectParamAPI.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/object_params/types/ObjectParamAPI.ts
@@ -244,7 +244,7 @@ export class ObjectStoreApi {
      * Returns pet inventories by status
      * @param param the request object
      */
-    public getInventory(param: StoreApiGetInventoryRequest, options?: Configuration): Promise<{ [key: string]: number; }> {
+    public getInventory(param: StoreApiGetInventoryRequest = {}, options?: Configuration): Promise<{ [key: string]: number; }> {
         return this.api.getInventory( options).toPromise();
     }
 
@@ -409,7 +409,7 @@ export class ObjectUserApi {
      * Logs out current logged in user session
      * @param param the request object
      */
-    public logoutUser(param: UserApiLogoutUserRequest, options?: Configuration): Promise<void> {
+    public logoutUser(param: UserApiLogoutUserRequest = {}, options?: Configuration): Promise<void> {
         return this.api.logoutUser( options).toPromise();
     }
 
diff --git a/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/FILES b/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/FILES
index 894d1ff1db0..efd990ad5be 100644
--- a/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/FILES
+++ b/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/FILES
@@ -1,7 +1,5 @@
 ApiResponse.avsc
 Category.avsc
-InlineObject.avsc
-InlineObject1.avsc
 Order.avsc
 Pet.avsc
 Tag.avsc
diff --git a/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/VERSION b/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/VERSION
index d99e7162d01..5f68295fc19 100644
--- a/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/VERSION
+++ b/samples/openapi3/schema/petstore/avro-schema/.openapi-generator/VERSION
@@ -1 +1 @@
-5.0.0-SNAPSHOT
\ No newline at end of file
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator-ignore b/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator/FILES b/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator/FILES
new file mode 100644
index 00000000000..7de4a0d86c0
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator/FILES
@@ -0,0 +1,20 @@
+README.md
+pom.xml
+src/main/java/org/openapitools/OpenAPI2SpringBoot.java
+src/main/java/org/openapitools/RFC3339DateFormat.java
+src/main/java/org/openapitools/api/ApiUtil.java
+src/main/java/org/openapitools/api/PetApi.java
+src/main/java/org/openapitools/api/PetApiController.java
+src/main/java/org/openapitools/api/StoreApi.java
+src/main/java/org/openapitools/api/StoreApiController.java
+src/main/java/org/openapitools/api/UserApi.java
+src/main/java/org/openapitools/api/UserApiController.java
+src/main/java/org/openapitools/configuration/HomeController.java
+src/main/java/org/openapitools/model/Category.java
+src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/Order.java
+src/main/java/org/openapitools/model/Pet.java
+src/main/java/org/openapitools/model/Tag.java
+src/main/java/org/openapitools/model/User.java
+src/main/resources/application.properties
+src/main/resources/openapi.yaml
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator/VERSION b/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/README.md b/samples/openapi3/server/petstore/spring-boot-springdoc/README.md
new file mode 100644
index 00000000000..5bbe4a495d9
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/README.md
@@ -0,0 +1,16 @@
+# OpenAPI generated server
+
+Spring Boot Server
+
+
+## Overview
+This server was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.
+By using the [OpenAPI-Spec](https://openapis.org), you can easily generate a server stub.
+This is an example of building a OpenAPI-enabled server in Java using the SpringBoot framework.
+
+Start your server as a simple java application
+
+You can view the api documentation in swagger-ui by pointing to
+http://localhost:8080/
+
+Change default port value in application.properties
\ No newline at end of file
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/pom.xml b/samples/openapi3/server/petstore/spring-boot-springdoc/pom.xml
new file mode 100644
index 00000000000..8cc169faddd
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/pom.xml
@@ -0,0 +1,72 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools.openapi3</groupId>
+    <artifactId>spring-boot-springdoc</artifactId>
+    <packaging>jar</packaging>
+    <name>spring-boot-springdoc</name>
+    <version>1.0.0-SNAPSHOT</version>
+    <properties>
+        <java.version>1.8</java.version>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <springdoc.version>1.6.4</springdoc.version>
+    </properties>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.6.2</version>
+    </parent>
+    <build>
+        <sourceDirectory>src/main/java</sourceDirectory>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-commons</artifactId>
+        </dependency>
+          <!--SpringDoc dependencies -->
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
+        </dependency>
+        <!-- @Nullable annotation -->
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <version>3.0.2</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.dataformat</groupId>
+            <artifactId>jackson-dataformat-yaml</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.openapitools</groupId>
+            <artifactId>jackson-databind-nullable</artifactId>
+            <version>0.2.2</version>
+        </dependency>
+        <!-- Bean Validation API support -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/OpenAPI2SpringBoot.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
new file mode 100644
index 00000000000..cb088f45193
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
@@ -0,0 +1,63 @@
+package org.openapitools;
+
+import com.fasterxml.jackson.databind.Module;
+import org.openapitools.jackson.nullable.JsonNullableModule;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.ExitCodeGenerator;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@SpringBootApplication
+@ComponentScan(basePackages = {"org.openapitools", "org.openapitools.api" , "org.openapitools.configuration"})
+public class OpenAPI2SpringBoot implements CommandLineRunner {
+
+    @Override
+    public void run(String... arg0) throws Exception {
+        if (arg0.length > 0 && arg0[0].equals("exitcode")) {
+            throw new ExitException();
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        new SpringApplication(OpenAPI2SpringBoot.class).run(args);
+    }
+
+    static class ExitException extends RuntimeException implements ExitCodeGenerator {
+        private static final long serialVersionUID = 1L;
+
+        @Override
+        public int getExitCode() {
+            return 10;
+        }
+
+    }
+
+    @Bean
+    public WebMvcConfigurer webConfigurer() {
+        return new WebMvcConfigurer() {
+            /*@Override
+            public void addCorsMappings(CorsRegistry registry) {
+                registry.addMapping("/**")
+                        .allowedOrigins("*")
+                        .allowedMethods("*")
+                        .allowedHeaders("Content-Type");
+            }*/
+
+            @Override
+            public void addResourceHandlers(ResourceHandlerRegistry registry) {
+                registry.addResourceHandler("/swagger-ui/**").addResourceLocations("classpath:/META-INF/resources/webjars/swagger-ui/3.14.2/");
+            }
+        };
+    }
+
+    @Bean
+    public Module jsonNullableModule() {
+        return new JsonNullableModule();
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/RFC3339DateFormat.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/RFC3339DateFormat.java
new file mode 100644
index 00000000000..bcd3936d8b3
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/RFC3339DateFormat.java
@@ -0,0 +1,38 @@
+package org.openapitools;
+
+import com.fasterxml.jackson.databind.util.StdDateFormat;
+
+import java.text.DateFormat;
+import java.text.FieldPosition;
+import java.text.ParsePosition;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.TimeZone;
+
+public class RFC3339DateFormat extends DateFormat {
+  private static final long serialVersionUID = 1L;
+  private static final TimeZone TIMEZONE_Z = TimeZone.getTimeZone("UTC");
+
+  private final StdDateFormat fmt = new StdDateFormat()
+          .withTimeZone(TIMEZONE_Z)
+          .withColonInTimeZone(true);
+
+  public RFC3339DateFormat() {
+    this.calendar = new GregorianCalendar();
+  }
+
+  @Override
+  public Date parse(String source, ParsePosition pos) {
+    return fmt.parse(source, pos);
+  }
+
+  @Override
+  public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
+    return fmt.format(date, toAppendTo, fieldPosition);
+  }
+
+  @Override
+  public Object clone() {
+    return this;
+  }
+}
\ No newline at end of file
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/ApiUtil.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/ApiUtil.java
new file mode 100644
index 00000000000..1245b1dd0cc
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/ApiUtil.java
@@ -0,0 +1,19 @@
+package org.openapitools.api;
+
+import org.springframework.web.context.request.NativeWebRequest;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+public class ApiUtil {
+    public static void setExampleResponse(NativeWebRequest req, String contentType, String example) {
+        try {
+            HttpServletResponse res = req.getNativeResponse(HttpServletResponse.class);
+            res.setCharacterEncoding("UTF-8");
+            res.addHeader("Content-Type", contentType);
+            res.getWriter().print(example);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/PetApi.java
new file mode 100644
index 00000000000..4f63d7c709e
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/PetApi.java
@@ -0,0 +1,393 @@
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+package org.openapitools.api;
+
+import org.openapitools.model.ModelApiResponse;
+import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Validated
+@Tag(name = "pet", description = "the pet API")
+public interface PetApi {
+
+    default Optional<NativeWebRequest> getRequest() {
+        return Optional.empty();
+    }
+
+    /**
+     * POST /pet : Add a new pet to the store
+     *
+     * @param pet Pet object that needs to be added to the store (required)
+     * @return successful operation (status code 200)
+     *         or Invalid input (status code 405)
+     */
+    @Operation(
+        operationId = "addPet",
+        summary = "Add a new pet to the store",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "405", description = "Invalid input")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/pet",
+        produces = { "application/xml", "application/json" },
+        consumes = { "application/json", "application/xml" }
+    )
+    default ResponseEntity<Pet> addPet(
+        @Parameter(name = "Pet", description = "Pet object that needs to be added to the store", required = true, schema = @Schema(description = "")) @Valid @RequestBody Pet pet
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * DELETE /pet/{petId} : Deletes a pet
+     *
+     * @param petId Pet id to delete (required)
+     * @param apiKey  (optional)
+     * @return Invalid pet value (status code 400)
+     */
+    @Operation(
+        operationId = "deletePet",
+        summary = "Deletes a pet",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid pet value")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.DELETE,
+        value = "/pet/{petId}"
+    )
+    default ResponseEntity<Void> deletePet(
+        @Parameter(name = "petId", description = "Pet id to delete", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId,
+        @Parameter(name = "api_key", description = "", schema = @Schema(description = "")) @RequestHeader(value = "api_key", required = false) String apiKey
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /pet/findByStatus : Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     *
+     * @param status Status values that need to be considered for filter (required)
+     * @return successful operation (status code 200)
+     *         or Invalid status value (status code 400)
+     */
+    @Operation(
+        operationId = "findPetsByStatus",
+        summary = "Finds Pets by status",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid status value")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/pet/findByStatus",
+        produces = { "application/xml", "application/json" }
+    )
+    default ResponseEntity<List<Pet>> findPetsByStatus(
+        @NotNull @Parameter(name = "status", description = "Status values that need to be considered for filter", required = true, schema = @Schema(description = "", allowableValues = { "available", "pending", "sold" })) @Valid @RequestParam(value = "status", required = true) List<String> status
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /pet/findByTags : Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     *
+     * @param tags Tags to filter by (required)
+     * @return successful operation (status code 200)
+     *         or Invalid tag value (status code 400)
+     * @deprecated
+     */
+    @Operation(
+        operationId = "findPetsByTags",
+        summary = "Finds Pets by tags",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid tag value")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/pet/findByTags",
+        produces = { "application/xml", "application/json" }
+    )
+    default ResponseEntity<List<Pet>> findPetsByTags(
+        @NotNull @Parameter(name = "tags", description = "Tags to filter by", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "tags", required = true) List<String> tags
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /pet/{petId} : Find pet by ID
+     * Returns a single pet
+     *
+     * @param petId ID of pet to return (required)
+     * @return successful operation (status code 200)
+     *         or Invalid ID supplied (status code 400)
+     *         or Pet not found (status code 404)
+     */
+    @Operation(
+        operationId = "getPetById",
+        summary = "Find pet by ID",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Pet not found")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/pet/{petId}",
+        produces = { "application/xml", "application/json" }
+    )
+    default ResponseEntity<Pet> getPetById(
+        @Parameter(name = "petId", description = "ID of pet to return", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * PUT /pet : Update an existing pet
+     *
+     * @param pet Pet object that needs to be added to the store (required)
+     * @return successful operation (status code 200)
+     *         or Invalid ID supplied (status code 400)
+     *         or Pet not found (status code 404)
+     *         or Validation exception (status code 405)
+     */
+    @Operation(
+        operationId = "updatePet",
+        summary = "Update an existing pet",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Pet.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Pet not found"),
+            @ApiResponse(responseCode = "405", description = "Validation exception")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.PUT,
+        value = "/pet",
+        produces = { "application/xml", "application/json" },
+        consumes = { "application/json", "application/xml" }
+    )
+    default ResponseEntity<Pet> updatePet(
+        @Parameter(name = "Pet", description = "Pet object that needs to be added to the store", required = true, schema = @Schema(description = "")) @Valid @RequestBody Pet pet
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /pet/{petId} : Updates a pet in the store with form data
+     *
+     * @param petId ID of pet that needs to be updated (required)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
+     * @return Invalid input (status code 405)
+     */
+    @Operation(
+        operationId = "updatePetWithForm",
+        summary = "Updates a pet in the store with form data",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "405", description = "Invalid input")
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/pet/{petId}",
+        consumes = { "application/x-www-form-urlencoded" }
+    )
+    default ResponseEntity<Void> updatePetWithForm(
+        @Parameter(name = "petId", description = "ID of pet that needs to be updated", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId,
+        @Parameter(name = "name", description = "Updated name of the pet", schema = @Schema(description = "")) @Valid @RequestPart(value = "name", required = false) String name,
+        @Parameter(name = "status", description = "Updated status of the pet", schema = @Schema(description = "")) @Valid @RequestPart(value = "status", required = false) String status
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /pet/{petId}/uploadImage : uploads an image
+     *
+     * @param petId ID of pet to update (required)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param file file to upload (optional)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "uploadFile",
+        summary = "uploads an image",
+        tags = { "pet" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  ModelApiResponse.class)))
+        },
+        security = {
+            @SecurityRequirement(name = "petstore_auth", scopes={ "write:pets", "read:pets" })
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/pet/{petId}/uploadImage",
+        produces = { "application/json" },
+        consumes = { "multipart/form-data" }
+    )
+    default ResponseEntity<ModelApiResponse> uploadFile(
+        @Parameter(name = "petId", description = "ID of pet to update", required = true, schema = @Schema(description = "")) @PathVariable("petId") Long petId,
+        @Parameter(name = "additionalMetadata", description = "Additional data to pass to server", schema = @Schema(description = "")) @Valid @RequestPart(value = "additionalMetadata", required = false) String additionalMetadata,
+        @Parameter(name = "file", description = "file to upload", schema = @Schema(description = "")) @RequestPart(value = "file", required = false) MultipartFile file
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"code\" : 0, \"type\" : \"type\", \"message\" : \"message\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/PetApiController.java
new file mode 100644
index 00000000000..4ad9ef06158
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/PetApiController.java
@@ -0,0 +1,27 @@
+package org.openapitools.api;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.context.request.NativeWebRequest;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Controller
+@RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
+public class PetApiController implements PetApi {
+
+    private final NativeWebRequest request;
+
+    @Autowired
+    public PetApiController(NativeWebRequest request) {
+        this.request = request;
+    }
+
+    @Override
+    public Optional<NativeWebRequest> getRequest() {
+        return Optional.ofNullable(request);
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/StoreApi.java
new file mode 100644
index 00000000000..fbc6b4fa89c
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/StoreApi.java
@@ -0,0 +1,190 @@
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+package org.openapitools.api;
+
+import java.util.Map;
+import org.openapitools.model.Order;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Validated
+@Tag(name = "store", description = "the store API")
+public interface StoreApi {
+
+    default Optional<NativeWebRequest> getRequest() {
+        return Optional.empty();
+    }
+
+    /**
+     * DELETE /store/order/{orderId} : Delete purchase order by ID
+     * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+     *
+     * @param orderId ID of the order that needs to be deleted (required)
+     * @return Invalid ID supplied (status code 400)
+     *         or Order not found (status code 404)
+     */
+    @Operation(
+        operationId = "deleteOrder",
+        summary = "Delete purchase order by ID",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Order not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.DELETE,
+        value = "/store/order/{orderId}"
+    )
+    default ResponseEntity<Void> deleteOrder(
+        @Parameter(name = "orderId", description = "ID of the order that needs to be deleted", required = true, schema = @Schema(description = "")) @PathVariable("orderId") String orderId
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /store/inventory : Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     *
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "getInventory",
+        summary = "Returns pet inventories by status",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Map.class)))
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/store/inventory",
+        produces = { "application/json" }
+    )
+    default ResponseEntity<Map<String, Integer>> getInventory(
+        
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /store/order/{orderId} : Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     *
+     * @param orderId ID of pet that needs to be fetched (required)
+     * @return successful operation (status code 200)
+     *         or Invalid ID supplied (status code 400)
+     *         or Order not found (status code 404)
+     */
+    @Operation(
+        operationId = "getOrderById",
+        summary = "Find purchase order by ID",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Order.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
+            @ApiResponse(responseCode = "404", description = "Order not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/store/order/{orderId}",
+        produces = { "application/xml", "application/json" }
+    )
+    default ResponseEntity<Order> getOrderById(
+        @Min(1L) @Max(5L) @Parameter(name = "orderId", description = "ID of pet that needs to be fetched", required = true, schema = @Schema(description = "")) @PathVariable("orderId") Long orderId
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Order> <id>123456789</id> <petId>123456789</petId> <quantity>123</quantity> <shipDate>2000-01-23T04:56:07.000Z</shipDate> <status>aeiou</status> <complete>true</complete> </Order>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /store/order : Place an order for a pet
+     *
+     * @param order order placed for purchasing the pet (required)
+     * @return successful operation (status code 200)
+     *         or Invalid Order (status code 400)
+     */
+    @Operation(
+        operationId = "placeOrder",
+        summary = "Place an order for a pet",
+        tags = { "store" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Order.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid Order")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/store/order",
+        produces = { "application/xml", "application/json" },
+        consumes = { "application/json" }
+    )
+    default ResponseEntity<Order> placeOrder(
+        @Parameter(name = "Order", description = "order placed for purchasing the pet", required = true, schema = @Schema(description = "")) @Valid @RequestBody Order order
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<Order> <id>123456789</id> <petId>123456789</petId> <quantity>123</quantity> <shipDate>2000-01-23T04:56:07.000Z</shipDate> <status>aeiou</status> <complete>true</complete> </Order>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/StoreApiController.java
new file mode 100644
index 00000000000..293d3035f80
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/StoreApiController.java
@@ -0,0 +1,27 @@
+package org.openapitools.api;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.context.request.NativeWebRequest;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Controller
+@RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
+public class StoreApiController implements StoreApi {
+
+    private final NativeWebRequest request;
+
+    @Autowired
+    public StoreApiController(NativeWebRequest request) {
+        this.request = request;
+    }
+
+    @Override
+    public Optional<NativeWebRequest> getRequest() {
+        return Optional.ofNullable(request);
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/UserApi.java
new file mode 100644
index 00000000000..17444f774be
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/UserApi.java
@@ -0,0 +1,304 @@
+/**
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+package org.openapitools.api;
+
+import java.util.List;
+import java.time.OffsetDateTime;
+import org.openapitools.model.User;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.Parameters;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Validated
+@Tag(name = "user", description = "the user API")
+public interface UserApi {
+
+    default Optional<NativeWebRequest> getRequest() {
+        return Optional.empty();
+    }
+
+    /**
+     * POST /user : Create user
+     * This can only be done by the logged in user.
+     *
+     * @param user Created user object (required)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "createUser",
+        summary = "Create user",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/user",
+        consumes = { "application/json" }
+    )
+    default ResponseEntity<Void> createUser(
+        @Parameter(name = "User", description = "Created user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody User user
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /user/createWithArray : Creates list of users with given input array
+     *
+     * @param user List of user object (required)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "createUsersWithArrayInput",
+        summary = "Creates list of users with given input array",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/user/createWithArray",
+        consumes = { "application/json" }
+    )
+    default ResponseEntity<Void> createUsersWithArrayInput(
+        @Parameter(name = "User", description = "List of user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody List<User> user
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * POST /user/createWithList : Creates list of users with given input array
+     *
+     * @param user List of user object (required)
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "createUsersWithListInput",
+        summary = "Creates list of users with given input array",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.POST,
+        value = "/user/createWithList",
+        consumes = { "application/json" }
+    )
+    default ResponseEntity<Void> createUsersWithListInput(
+        @Parameter(name = "User", description = "List of user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody List<User> user
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * DELETE /user/{username} : Delete user
+     * This can only be done by the logged in user.
+     *
+     * @param username The name that needs to be deleted (required)
+     * @return Invalid username supplied (status code 400)
+     *         or User not found (status code 404)
+     */
+    @Operation(
+        operationId = "deleteUser",
+        summary = "Delete user",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid username supplied"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.DELETE,
+        value = "/user/{username}"
+    )
+    default ResponseEntity<Void> deleteUser(
+        @Parameter(name = "username", description = "The name that needs to be deleted", required = true, schema = @Schema(description = "")) @PathVariable("username") String username
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /user/{username} : Get user by user name
+     *
+     * @param username The name that needs to be fetched. Use user1 for testing. (required)
+     * @return successful operation (status code 200)
+     *         or Invalid username supplied (status code 400)
+     *         or User not found (status code 404)
+     */
+    @Operation(
+        operationId = "getUserByName",
+        summary = "Get user by user name",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  User.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid username supplied"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/user/{username}",
+        produces = { "application/xml", "application/json" }
+    )
+    default ResponseEntity<User> getUserByName(
+        @Parameter(name = "username", description = "The name that needs to be fetched. Use user1 for testing.", required = true, schema = @Schema(description = "")) @PathVariable("username") String username
+    ) {
+        getRequest().ifPresent(request -> {
+            for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
+                    String exampleString = "{ \"firstName\" : \"firstName\", \"lastName\" : \"lastName\", \"password\" : \"password\", \"userStatus\" : 6, \"phone\" : \"phone\", \"id\" : 0, \"email\" : \"email\", \"username\" : \"username\" }";
+                    ApiUtil.setExampleResponse(request, "application/json", exampleString);
+                    break;
+                }
+                if (mediaType.isCompatibleWith(MediaType.valueOf("application/xml"))) {
+                    String exampleString = "<User> <id>123456789</id> <username>aeiou</username> <firstName>aeiou</firstName> <lastName>aeiou</lastName> <email>aeiou</email> <password>aeiou</password> <phone>aeiou</phone> <userStatus>123</userStatus> </User>";
+                    ApiUtil.setExampleResponse(request, "application/xml", exampleString);
+                    break;
+                }
+            }
+        });
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /user/login : Logs user into the system
+     *
+     * @param username The user name for login (required)
+     * @param password The password for login in clear text (required)
+     * @return successful operation (status code 200)
+     *         or Invalid username/password supplied (status code 400)
+     */
+    @Operation(
+        operationId = "loginUser",
+        summary = "Logs user into the system",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class))),
+            @ApiResponse(responseCode = "400", description = "Invalid username/password supplied")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/user/login",
+        produces = { "application/xml", "application/json" }
+    )
+    default ResponseEntity<String> loginUser(
+        @NotNull @Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") @Parameter(name = "username", description = "The user name for login", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "username", required = true) String username,
+        @NotNull @Parameter(name = "password", description = "The password for login in clear text", required = true, schema = @Schema(description = "")) @Valid @RequestParam(value = "password", required = true) String password
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * GET /user/logout : Logs out current logged in user session
+     *
+     * @return successful operation (status code 200)
+     */
+    @Operation(
+        operationId = "logoutUser",
+        summary = "Logs out current logged in user session",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "200", description = "successful operation")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.GET,
+        value = "/user/logout"
+    )
+    default ResponseEntity<Void> logoutUser(
+        
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+
+    /**
+     * PUT /user/{username} : Updated user
+     * This can only be done by the logged in user.
+     *
+     * @param username name that need to be deleted (required)
+     * @param user Updated user object (required)
+     * @return Invalid user supplied (status code 400)
+     *         or User not found (status code 404)
+     */
+    @Operation(
+        operationId = "updateUser",
+        summary = "Updated user",
+        tags = { "user" },
+        responses = {
+            @ApiResponse(responseCode = "400", description = "Invalid user supplied"),
+            @ApiResponse(responseCode = "404", description = "User not found")
+        },
+        security = {
+            @SecurityRequirement(name = "api_key")
+        }
+    )
+    @RequestMapping(
+        method = RequestMethod.PUT,
+        value = "/user/{username}",
+        consumes = { "application/json" }
+    )
+    default ResponseEntity<Void> updateUser(
+        @Parameter(name = "username", description = "name that need to be deleted", required = true, schema = @Schema(description = "")) @PathVariable("username") String username,
+        @Parameter(name = "User", description = "Updated user object", required = true, schema = @Schema(description = "")) @Valid @RequestBody User user
+    ) {
+        return new ResponseEntity<>(HttpStatus.NOT_IMPLEMENTED);
+
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/UserApiController.java
new file mode 100644
index 00000000000..aab4767a50d
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/api/UserApiController.java
@@ -0,0 +1,27 @@
+package org.openapitools.api;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.context.request.NativeWebRequest;
+import java.util.Optional;
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Controller
+@RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
+public class UserApiController implements UserApi {
+
+    private final NativeWebRequest request;
+
+    @Autowired
+    public UserApiController(NativeWebRequest request) {
+        this.request = request;
+    }
+
+    @Override
+    public Optional<NativeWebRequest> getRequest() {
+        return Optional.ofNullable(request);
+    }
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/configuration/HomeController.java
new file mode 100644
index 00000000000..61d4ebb3183
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/configuration/HomeController.java
@@ -0,0 +1,53 @@
+package org.openapitools.configuration;
+
+import org.springframework.context.annotation.Bean;
+import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.core.io.Resource;
+import org.springframework.stereotype.Controller;
+import org.springframework.util.StreamUtils;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+
+/**
+ * Home redirection to OpenAPI api documentation
+ */
+@Controller
+public class HomeController {
+
+    private static YAMLMapper yamlMapper = new YAMLMapper();
+
+    @Value("classpath:/openapi.yaml")
+    private Resource openapi;
+
+    @Bean
+    public String openapiContent() throws IOException {
+        try(InputStream is = openapi.getInputStream()) {
+            return StreamUtils.copyToString(is, Charset.defaultCharset());
+        }
+    }
+
+    @GetMapping(value = "/openapi.yaml", produces = "application/vnd.oai.openapi")
+    @ResponseBody
+    public String openapiYaml() throws IOException {
+        return openapiContent();
+    }
+
+    @GetMapping(value = "/openapi.json", produces = "application/json")
+    @ResponseBody
+    public Object openapiJson() throws IOException {
+        return yamlMapper.readValue(openapiContent(), Object.class);
+    }
+
+    @RequestMapping("/")
+    public String index() {
+        return "redirect:swagger-ui/index.html?url=../openapi.json";
+    }
+
+
+}
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Category.java
new file mode 100644
index 00000000000..823adb2ae4d
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Category.java
@@ -0,0 +1,108 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A category for a pet
+ */
+
+@Schema(name = "Category", description = "A category for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Category   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("name")
+  private String name;
+
+  public Category id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Category name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  @Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
+  @Schema(name = "name", required = false)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Category category = (Category) o;
+    return Objects.equals(this.id, category.id) &&
+        Objects.equals(this.name, category.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Category {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/ModelApiResponse.java
new file mode 100644
index 00000000000..ea4f1e40264
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -0,0 +1,132 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Describes the result of uploading an image resource
+ */
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelApiResponse   {
+
+  @JsonProperty("code")
+  private Integer code;
+
+  @JsonProperty("type")
+  private String type;
+
+  @JsonProperty("message")
+  private String message;
+
+  public ModelApiResponse code(Integer code) {
+    this.code = code;
+    return this;
+  }
+
+  /**
+   * Get code
+   * @return code
+  */
+  
+  @Schema(name = "code", required = false)
+  public Integer getCode() {
+    return code;
+  }
+
+  public void setCode(Integer code) {
+    this.code = code;
+  }
+
+  public ModelApiResponse type(String type) {
+    this.type = type;
+    return this;
+  }
+
+  /**
+   * Get type
+   * @return type
+  */
+  
+  @Schema(name = "type", required = false)
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+  public ModelApiResponse message(String message) {
+    this.message = message;
+    return this;
+  }
+
+  /**
+   * Get message
+   * @return message
+  */
+  
+  @Schema(name = "message", required = false)
+  public String getMessage() {
+    return message;
+  }
+
+  public void setMessage(String message) {
+    this.message = message;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelApiResponse _apiResponse = (ModelApiResponse) o;
+    return Objects.equals(this.code, _apiResponse.code) &&
+        Objects.equals(this.type, _apiResponse.type) &&
+        Objects.equals(this.message, _apiResponse.message);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(code, type, message);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelApiResponse {\n");
+    sb.append("    code: ").append(toIndentedString(code)).append("\n");
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    message: ").append(toIndentedString(message)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Order.java
new file mode 100644
index 00000000000..e624a0d7c1f
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Order.java
@@ -0,0 +1,245 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * An order for a pets from the pet store
+ */
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Order   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("petId")
+  private Long petId;
+
+  @JsonProperty("quantity")
+  private Integer quantity;
+
+  @JsonProperty("shipDate")
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
+  private OffsetDateTime shipDate;
+
+  /**
+   * Order Status
+   */
+  public enum StatusEnum {
+    PLACED("placed"),
+    
+    APPROVED("approved"),
+    
+    DELIVERED("delivered");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  @JsonProperty("status")
+  private StatusEnum status;
+
+  @JsonProperty("complete")
+  private Boolean complete = false;
+
+  public Order id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Order petId(Long petId) {
+    this.petId = petId;
+    return this;
+  }
+
+  /**
+   * Get petId
+   * @return petId
+  */
+  
+  @Schema(name = "petId", required = false)
+  public Long getPetId() {
+    return petId;
+  }
+
+  public void setPetId(Long petId) {
+    this.petId = petId;
+  }
+
+  public Order quantity(Integer quantity) {
+    this.quantity = quantity;
+    return this;
+  }
+
+  /**
+   * Get quantity
+   * @return quantity
+  */
+  
+  @Schema(name = "quantity", required = false)
+  public Integer getQuantity() {
+    return quantity;
+  }
+
+  public void setQuantity(Integer quantity) {
+    this.quantity = quantity;
+  }
+
+  public Order shipDate(OffsetDateTime shipDate) {
+    this.shipDate = shipDate;
+    return this;
+  }
+
+  /**
+   * Get shipDate
+   * @return shipDate
+  */
+  @Valid 
+  @Schema(name = "shipDate", required = false)
+  public OffsetDateTime getShipDate() {
+    return shipDate;
+  }
+
+  public void setShipDate(OffsetDateTime shipDate) {
+    this.shipDate = shipDate;
+  }
+
+  public Order status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+  /**
+   * Order Status
+   * @return status
+  */
+  
+  @Schema(name = "status", description = "Order Status", required = false)
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  public Order complete(Boolean complete) {
+    this.complete = complete;
+    return this;
+  }
+
+  /**
+   * Get complete
+   * @return complete
+  */
+  
+  @Schema(name = "complete", required = false)
+  public Boolean getComplete() {
+    return complete;
+  }
+
+  public void setComplete(Boolean complete) {
+    this.complete = complete;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Order order = (Order) o;
+    return Objects.equals(this.id, order.id) &&
+        Objects.equals(this.petId, order.petId) &&
+        Objects.equals(this.quantity, order.quantity) &&
+        Objects.equals(this.shipDate, order.shipDate) &&
+        Objects.equals(this.status, order.status) &&
+        Objects.equals(this.complete, order.complete);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, petId, quantity, shipDate, status, complete);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Order {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
+    sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
+    sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("    complete: ").append(toIndentedString(complete)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Pet.java
new file mode 100644
index 00000000000..ddff66759ba
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Pet.java
@@ -0,0 +1,261 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.model.Category;
+import org.openapitools.model.Tag;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A pet for sale in the pet store
+ */
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Pet   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("category")
+  private Category category;
+
+  @JsonProperty("name")
+  private String name;
+
+  @JsonProperty("photoUrls")
+  @Valid
+  private List<String> photoUrls = new ArrayList<>();
+
+  @JsonProperty("tags")
+  @Valid
+  private List<Tag> tags = null;
+
+  /**
+   * pet status in the store
+   */
+  public enum StatusEnum {
+    AVAILABLE("available"),
+    
+    PENDING("pending"),
+    
+    SOLD("sold");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  @JsonProperty("status")
+  private StatusEnum status;
+
+  public Pet id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Pet category(Category category) {
+    this.category = category;
+    return this;
+  }
+
+  /**
+   * Get category
+   * @return category
+  */
+  @Valid 
+  @Schema(name = "category", required = false)
+  public Category getCategory() {
+    return category;
+  }
+
+  public void setCategory(Category category) {
+    this.category = category;
+  }
+
+  public Pet name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public Pet photoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+    return this;
+  }
+
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+  /**
+   * Get photoUrls
+   * @return photoUrls
+  */
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
+  public List<String> getPhotoUrls() {
+    return photoUrls;
+  }
+
+  public void setPhotoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+  }
+
+  public Pet tags(List<Tag> tags) {
+    this.tags = tags;
+    return this;
+  }
+
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<>();
+    }
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+  /**
+   * Get tags
+   * @return tags
+  */
+  @Valid 
+  @Schema(name = "tags", required = false)
+  public List<Tag> getTags() {
+    return tags;
+  }
+
+  public void setTags(List<Tag> tags) {
+    this.tags = tags;
+  }
+
+  public Pet status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+  /**
+   * pet status in the store
+   * @return status
+  */
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Pet pet = (Pet) o;
+    return Objects.equals(this.id, pet.id) &&
+        Objects.equals(this.category, pet.category) &&
+        Objects.equals(this.name, pet.name) &&
+        Objects.equals(this.photoUrls, pet.photoUrls) &&
+        Objects.equals(this.tags, pet.tags) &&
+        Objects.equals(this.status, pet.status);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, category, name, photoUrls, tags, status);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Pet {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    category: ").append(toIndentedString(category)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+    sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Tag.java
new file mode 100644
index 00000000000..5c3ac82ba6e
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/Tag.java
@@ -0,0 +1,108 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A tag for a pet
+ */
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class Tag   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("name")
+  private String name;
+
+  public Tag id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Tag name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  
+  @Schema(name = "name", required = false)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Tag tag = (Tag) o;
+    return Objects.equals(this.id, tag.id) &&
+        Objects.equals(this.name, tag.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Tag {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/User.java
new file mode 100644
index 00000000000..328569672eb
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/java/org/openapitools/model/User.java
@@ -0,0 +1,252 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A User who is purchasing from the pet store
+ */
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class User   {
+
+  @JsonProperty("id")
+  private Long id;
+
+  @JsonProperty("username")
+  private String username;
+
+  @JsonProperty("firstName")
+  private String firstName;
+
+  @JsonProperty("lastName")
+  private String lastName;
+
+  @JsonProperty("email")
+  private String email;
+
+  @JsonProperty("password")
+  private String password;
+
+  @JsonProperty("phone")
+  private String phone;
+
+  @JsonProperty("userStatus")
+  private Integer userStatus;
+
+  public User id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public User username(String username) {
+    this.username = username;
+    return this;
+  }
+
+  /**
+   * Get username
+   * @return username
+  */
+  
+  @Schema(name = "username", required = false)
+  public String getUsername() {
+    return username;
+  }
+
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public User firstName(String firstName) {
+    this.firstName = firstName;
+    return this;
+  }
+
+  /**
+   * Get firstName
+   * @return firstName
+  */
+  
+  @Schema(name = "firstName", required = false)
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public void setFirstName(String firstName) {
+    this.firstName = firstName;
+  }
+
+  public User lastName(String lastName) {
+    this.lastName = lastName;
+    return this;
+  }
+
+  /**
+   * Get lastName
+   * @return lastName
+  */
+  
+  @Schema(name = "lastName", required = false)
+  public String getLastName() {
+    return lastName;
+  }
+
+  public void setLastName(String lastName) {
+    this.lastName = lastName;
+  }
+
+  public User email(String email) {
+    this.email = email;
+    return this;
+  }
+
+  /**
+   * Get email
+   * @return email
+  */
+  
+  @Schema(name = "email", required = false)
+  public String getEmail() {
+    return email;
+  }
+
+  public void setEmail(String email) {
+    this.email = email;
+  }
+
+  public User password(String password) {
+    this.password = password;
+    return this;
+  }
+
+  /**
+   * Get password
+   * @return password
+  */
+  
+  @Schema(name = "password", required = false)
+  public String getPassword() {
+    return password;
+  }
+
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public User phone(String phone) {
+    this.phone = phone;
+    return this;
+  }
+
+  /**
+   * Get phone
+   * @return phone
+  */
+  
+  @Schema(name = "phone", required = false)
+  public String getPhone() {
+    return phone;
+  }
+
+  public void setPhone(String phone) {
+    this.phone = phone;
+  }
+
+  public User userStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+    return this;
+  }
+
+  /**
+   * User Status
+   * @return userStatus
+  */
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
+  public Integer getUserStatus() {
+    return userStatus;
+  }
+
+  public void setUserStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    User user = (User) o;
+    return Objects.equals(this.id, user.id) &&
+        Objects.equals(this.username, user.username) &&
+        Objects.equals(this.firstName, user.firstName) &&
+        Objects.equals(this.lastName, user.lastName) &&
+        Objects.equals(this.email, user.email) &&
+        Objects.equals(this.password, user.password) &&
+        Objects.equals(this.phone, user.phone) &&
+        Objects.equals(this.userStatus, user.userStatus);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class User {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
+    sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
+    sb.append("    email: ").append(toIndentedString(email)).append("\n");
+    sb.append("    password: ").append(toIndentedString(password)).append("\n");
+    sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
+    sb.append("    userStatus: ").append(toIndentedString(userStatus)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/resources/application.properties b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/resources/application.properties
new file mode 100644
index 00000000000..7e90813e59b
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/resources/application.properties
@@ -0,0 +1,3 @@
+server.port=8080
+spring.jackson.date-format=org.openapitools.RFC3339DateFormat
+spring.jackson.serialization.WRITE_DATES_AS_TIMESTAMPS=false
diff --git a/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/resources/openapi.yaml b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/resources/openapi.yaml
new file mode 100644
index 00000000000..56703dfefb5
--- /dev/null
+++ b/samples/openapi3/server/petstore/spring-boot-springdoc/src/main/resources/openapi.yaml
@@ -0,0 +1,893 @@
+openapi: 3.0.0
+info:
+  description: This is a sample server Petstore server. For this sample, you can use
+    the api key `special-key` to test the authorization filters.
+  license:
+    name: Apache-2.0
+    url: https://www.apache.org/licenses/LICENSE-2.0.html
+  title: OpenAPI Petstore
+  version: 1.0.0
+externalDocs:
+  description: Find out more about Swagger
+  url: http://swagger.io
+servers:
+- url: http://petstore.swagger.io/v2
+tags:
+- description: Everything about your Pets
+  name: pet
+- description: Access to Petstore orders
+  name: store
+- description: Operations about user
+  name: user
+paths:
+  /pet:
+    post:
+      operationId: addPet
+      requestBody:
+        $ref: '#/components/requestBodies/Pet'
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Pet'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Pet'
+          description: successful operation
+        "405":
+          description: Invalid input
+      security:
+      - petstore_auth:
+        - write:pets
+        - read:pets
+      summary: Add a new pet to the store
+      tags:
+      - pet
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+    put:
+      operationId: updatePet
+      requestBody:
+        $ref: '#/components/requestBodies/Pet'
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Pet'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Pet'
+          description: successful operation
+        "400":
+          description: Invalid ID supplied
+        "404":
+          description: Pet not found
+        "405":
+          description: Validation exception
+      security:
+      - petstore_auth:
+        - write:pets
+        - read:pets
+      summary: Update an existing pet
+      tags:
+      - pet
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+  /pet/findByStatus:
+    get:
+      description: Multiple status values can be provided with comma separated strings
+      operationId: findPetsByStatus
+      parameters:
+      - deprecated: true
+        description: Status values that need to be considered for filter
+        explode: false
+        in: query
+        name: status
+        required: true
+        schema:
+          items:
+            default: available
+            enum:
+            - available
+            - pending
+            - sold
+            type: string
+          type: array
+        style: form
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                items:
+                  $ref: '#/components/schemas/Pet'
+                type: array
+            application/json:
+              schema:
+                items:
+                  $ref: '#/components/schemas/Pet'
+                type: array
+          description: successful operation
+        "400":
+          description: Invalid status value
+      security:
+      - petstore_auth:
+        - read:pets
+      summary: Finds Pets by status
+      tags:
+      - pet
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+  /pet/findByTags:
+    get:
+      deprecated: true
+      description: Multiple tags can be provided with comma separated strings. Use
+        tag1, tag2, tag3 for testing.
+      operationId: findPetsByTags
+      parameters:
+      - description: Tags to filter by
+        explode: false
+        in: query
+        name: tags
+        required: true
+        schema:
+          items:
+            type: string
+          type: array
+        style: form
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                items:
+                  $ref: '#/components/schemas/Pet'
+                type: array
+            application/json:
+              schema:
+                items:
+                  $ref: '#/components/schemas/Pet'
+                type: array
+          description: successful operation
+        "400":
+          description: Invalid tag value
+      security:
+      - petstore_auth:
+        - read:pets
+      summary: Finds Pets by tags
+      tags:
+      - pet
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+  /pet/{petId}:
+    delete:
+      operationId: deletePet
+      parameters:
+      - explode: false
+        in: header
+        name: api_key
+        required: false
+        schema:
+          type: string
+        style: simple
+      - description: Pet id to delete
+        explode: false
+        in: path
+        name: petId
+        required: true
+        schema:
+          format: int64
+          type: integer
+        style: simple
+      responses:
+        "400":
+          description: Invalid pet value
+      security:
+      - petstore_auth:
+        - write:pets
+        - read:pets
+      summary: Deletes a pet
+      tags:
+      - pet
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+    get:
+      description: Returns a single pet
+      operationId: getPetById
+      parameters:
+      - description: ID of pet to return
+        explode: false
+        in: path
+        name: petId
+        required: true
+        schema:
+          format: int64
+          type: integer
+        style: simple
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Pet'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Pet'
+          description: successful operation
+        "400":
+          description: Invalid ID supplied
+        "404":
+          description: Pet not found
+      security:
+      - api_key: []
+      summary: Find pet by ID
+      tags:
+      - pet
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+    post:
+      operationId: updatePetWithForm
+      parameters:
+      - description: ID of pet that needs to be updated
+        explode: false
+        in: path
+        name: petId
+        required: true
+        schema:
+          format: int64
+          type: integer
+        style: simple
+      requestBody:
+        $ref: '#/components/requestBodies/inline_object'
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              properties:
+                name:
+                  description: Updated name of the pet
+                  type: string
+                status:
+                  description: Updated status of the pet
+                  type: string
+              type: object
+      responses:
+        "405":
+          description: Invalid input
+      security:
+      - petstore_auth:
+        - write:pets
+        - read:pets
+      summary: Updates a pet in the store with form data
+      tags:
+      - pet
+      x-contentType: application/x-www-form-urlencoded
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+  /pet/{petId}/uploadImage:
+    post:
+      operationId: uploadFile
+      parameters:
+      - description: ID of pet to update
+        explode: false
+        in: path
+        name: petId
+        required: true
+        schema:
+          format: int64
+          type: integer
+        style: simple
+      requestBody:
+        $ref: '#/components/requestBodies/inline_object_1'
+        content:
+          multipart/form-data:
+            schema:
+              properties:
+                additionalMetadata:
+                  description: Additional data to pass to server
+                  type: string
+                file:
+                  description: file to upload
+                  format: binary
+                  type: string
+              type: object
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ApiResponse'
+          description: successful operation
+      security:
+      - petstore_auth:
+        - write:pets
+        - read:pets
+      summary: uploads an image
+      tags:
+      - pet
+      x-contentType: multipart/form-data
+      x-accepts: application/json
+      x-tags:
+      - tag: pet
+  /store/inventory:
+    get:
+      description: Returns a map of status codes to quantities
+      operationId: getInventory
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                additionalProperties:
+                  format: int32
+                  type: integer
+                type: object
+          description: successful operation
+      security:
+      - api_key: []
+      summary: Returns pet inventories by status
+      tags:
+      - store
+      x-accepts: application/json
+      x-tags:
+      - tag: store
+  /store/order:
+    post:
+      operationId: placeOrder
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Order'
+        description: order placed for purchasing the pet
+        required: true
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Order'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Order'
+          description: successful operation
+        "400":
+          description: Invalid Order
+      summary: Place an order for a pet
+      tags:
+      - store
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: store
+  /store/order/{orderId}:
+    delete:
+      description: For valid response try integer IDs with value < 1000. Anything
+        above 1000 or nonintegers will generate API errors
+      operationId: deleteOrder
+      parameters:
+      - description: ID of the order that needs to be deleted
+        explode: false
+        in: path
+        name: orderId
+        required: true
+        schema:
+          type: string
+        style: simple
+      responses:
+        "400":
+          description: Invalid ID supplied
+        "404":
+          description: Order not found
+      summary: Delete purchase order by ID
+      tags:
+      - store
+      x-accepts: application/json
+      x-tags:
+      - tag: store
+    get:
+      description: For valid response try integer IDs with value <= 5 or > 10. Other
+        values will generated exceptions
+      operationId: getOrderById
+      parameters:
+      - description: ID of pet that needs to be fetched
+        explode: false
+        in: path
+        name: orderId
+        required: true
+        schema:
+          format: int64
+          maximum: 5
+          minimum: 1
+          type: integer
+        style: simple
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/Order'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Order'
+          description: successful operation
+        "400":
+          description: Invalid ID supplied
+        "404":
+          description: Order not found
+      summary: Find purchase order by ID
+      tags:
+      - store
+      x-accepts: application/json
+      x-tags:
+      - tag: store
+  /user:
+    post:
+      description: This can only be done by the logged in user.
+      operationId: createUser
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/User'
+        description: Created user object
+        required: true
+      responses:
+        default:
+          description: successful operation
+      security:
+      - api_key: []
+      summary: Create user
+      tags:
+      - user
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+  /user/createWithArray:
+    post:
+      operationId: createUsersWithArrayInput
+      requestBody:
+        $ref: '#/components/requestBodies/UserArray'
+      responses:
+        default:
+          description: successful operation
+      security:
+      - api_key: []
+      summary: Creates list of users with given input array
+      tags:
+      - user
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+  /user/createWithList:
+    post:
+      operationId: createUsersWithListInput
+      requestBody:
+        $ref: '#/components/requestBodies/UserArray'
+      responses:
+        default:
+          description: successful operation
+      security:
+      - api_key: []
+      summary: Creates list of users with given input array
+      tags:
+      - user
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+  /user/login:
+    get:
+      operationId: loginUser
+      parameters:
+      - description: The user name for login
+        explode: true
+        in: query
+        name: username
+        required: true
+        schema:
+          pattern: ^[a-zA-Z0-9]+[a-zA-Z0-9\.\-_]*[a-zA-Z0-9]+$
+          type: string
+        style: form
+      - description: The password for login in clear text
+        explode: true
+        in: query
+        name: password
+        required: true
+        schema:
+          type: string
+        style: form
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                type: string
+            application/json:
+              schema:
+                type: string
+          description: successful operation
+          headers:
+            Set-Cookie:
+              description: Cookie authentication key for use with the `api_key` apiKey
+                authentication.
+              explode: false
+              schema:
+                example: AUTH_KEY=abcde12345; Path=/; HttpOnly
+                type: string
+              style: simple
+            X-Rate-Limit:
+              description: calls per hour allowed by the user
+              explode: false
+              schema:
+                format: int32
+                type: integer
+              style: simple
+            X-Expires-After:
+              description: date in UTC when token expires
+              explode: false
+              schema:
+                format: date-time
+                type: string
+              style: simple
+        "400":
+          description: Invalid username/password supplied
+      summary: Logs user into the system
+      tags:
+      - user
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+  /user/logout:
+    get:
+      operationId: logoutUser
+      responses:
+        default:
+          description: successful operation
+      security:
+      - api_key: []
+      summary: Logs out current logged in user session
+      tags:
+      - user
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+  /user/{username}:
+    delete:
+      description: This can only be done by the logged in user.
+      operationId: deleteUser
+      parameters:
+      - description: The name that needs to be deleted
+        explode: false
+        in: path
+        name: username
+        required: true
+        schema:
+          type: string
+        style: simple
+      responses:
+        "400":
+          description: Invalid username supplied
+        "404":
+          description: User not found
+      security:
+      - api_key: []
+      summary: Delete user
+      tags:
+      - user
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+    get:
+      operationId: getUserByName
+      parameters:
+      - description: The name that needs to be fetched. Use user1 for testing.
+        explode: false
+        in: path
+        name: username
+        required: true
+        schema:
+          type: string
+        style: simple
+      responses:
+        "200":
+          content:
+            application/xml:
+              schema:
+                $ref: '#/components/schemas/User'
+            application/json:
+              schema:
+                $ref: '#/components/schemas/User'
+          description: successful operation
+        "400":
+          description: Invalid username supplied
+        "404":
+          description: User not found
+      summary: Get user by user name
+      tags:
+      - user
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+    put:
+      description: This can only be done by the logged in user.
+      operationId: updateUser
+      parameters:
+      - description: name that need to be deleted
+        explode: false
+        in: path
+        name: username
+        required: true
+        schema:
+          type: string
+        style: simple
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/User'
+        description: Updated user object
+        required: true
+      responses:
+        "400":
+          description: Invalid user supplied
+        "404":
+          description: User not found
+      security:
+      - api_key: []
+      summary: Updated user
+      tags:
+      - user
+      x-contentType: application/json
+      x-accepts: application/json
+      x-tags:
+      - tag: user
+components:
+  requestBodies:
+    UserArray:
+      content:
+        application/json:
+          schema:
+            items:
+              $ref: '#/components/schemas/User'
+            type: array
+      description: List of user object
+      required: true
+    Pet:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Pet'
+        application/xml:
+          schema:
+            $ref: '#/components/schemas/Pet'
+      description: Pet object that needs to be added to the store
+      required: true
+    inline_object:
+      content:
+        application/x-www-form-urlencoded:
+          schema:
+            $ref: '#/components/schemas/inline_object'
+    inline_object_1:
+      content:
+        multipart/form-data:
+          schema:
+            $ref: '#/components/schemas/inline_object_1'
+  schemas:
+    Order:
+      description: An order for a pets from the pet store
+      example:
+        petId: 6
+        quantity: 1
+        id: 0
+        shipDate: 2000-01-23T04:56:07.000+00:00
+        complete: false
+        status: placed
+      properties:
+        id:
+          format: int64
+          type: integer
+        petId:
+          format: int64
+          type: integer
+        quantity:
+          format: int32
+          type: integer
+        shipDate:
+          format: date-time
+          type: string
+        status:
+          description: Order Status
+          enum:
+          - placed
+          - approved
+          - delivered
+          type: string
+        complete:
+          default: false
+          type: boolean
+      title: Pet Order
+      type: object
+      xml:
+        name: Order
+    Category:
+      description: A category for a pet
+      example:
+        name: name
+        id: 6
+      properties:
+        id:
+          format: int64
+          type: integer
+        name:
+          pattern: ^[a-zA-Z0-9]+[a-zA-Z0-9\.\-_]*[a-zA-Z0-9]+$
+          type: string
+      title: Pet category
+      type: object
+      xml:
+        name: Category
+    User:
+      description: A User who is purchasing from the pet store
+      example:
+        firstName: firstName
+        lastName: lastName
+        password: password
+        userStatus: 6
+        phone: phone
+        id: 0
+        email: email
+        username: username
+      properties:
+        id:
+          format: int64
+          type: integer
+        username:
+          type: string
+        firstName:
+          type: string
+        lastName:
+          type: string
+        email:
+          type: string
+        password:
+          type: string
+        phone:
+          type: string
+        userStatus:
+          description: User Status
+          format: int32
+          type: integer
+      title: a User
+      type: object
+      xml:
+        name: User
+    Tag:
+      description: A tag for a pet
+      example:
+        name: name
+        id: 1
+      properties:
+        id:
+          format: int64
+          type: integer
+        name:
+          type: string
+      title: Pet Tag
+      type: object
+      xml:
+        name: Tag
+    Pet:
+      description: A pet for sale in the pet store
+      example:
+        photoUrls:
+        - photoUrls
+        - photoUrls
+        name: doggie
+        id: 0
+        category:
+          name: name
+          id: 6
+        tags:
+        - name: name
+          id: 1
+        - name: name
+          id: 1
+        status: available
+      properties:
+        id:
+          format: int64
+          type: integer
+        category:
+          $ref: '#/components/schemas/Category'
+        name:
+          example: doggie
+          type: string
+        photoUrls:
+          items:
+            type: string
+          type: array
+          xml:
+            name: photoUrl
+            wrapped: true
+        tags:
+          items:
+            $ref: '#/components/schemas/Tag'
+          type: array
+          xml:
+            name: tag
+            wrapped: true
+        status:
+          deprecated: true
+          description: pet status in the store
+          enum:
+          - available
+          - pending
+          - sold
+          type: string
+      required:
+      - name
+      - photoUrls
+      title: a Pet
+      type: object
+      xml:
+        name: Pet
+    ApiResponse:
+      description: Describes the result of uploading an image resource
+      example:
+        code: 0
+        type: type
+        message: message
+      properties:
+        code:
+          format: int32
+          type: integer
+        type:
+          type: string
+        message:
+          type: string
+      title: An uploaded response
+      type: object
+    inline_object:
+      properties:
+        name:
+          description: Updated name of the pet
+          type: string
+        status:
+          description: Updated status of the pet
+          type: string
+      type: object
+    inline_object_1:
+      properties:
+        additionalMetadata:
+          description: Additional data to pass to server
+          type: string
+        file:
+          description: file to upload
+          format: binary
+          type: string
+      type: object
+  securitySchemes:
+    petstore_auth:
+      flows:
+        implicit:
+          authorizationUrl: http://petstore.swagger.io/api/oauth/dialog
+          scopes:
+            write:pets: modify pets in your account
+            read:pets: read your pets
+      type: oauth2
+    api_key:
+      in: header
+      name: api_key
+      type: apiKey
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES
index 0616dc9030d..8dd51f71a27 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES
@@ -43,6 +43,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -50,6 +51,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/pom.xml b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/pom.xml
index 737d7740cd5..d6ebd909ee8 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/pom.xml
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/pom.xml
@@ -9,12 +9,12 @@
         <java.version>1.7</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>2.6.2</version>
     </parent>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+          <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
index df589e8850a..cf6aeeaf1f0 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -23,7 +23,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
@@ -36,6 +38,7 @@ public interface AnotherFakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "call123testSpecialTags",
         summary = "To test special tags",
         tags = { "$another-fake?" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index 7968826328d..cac2bbc73b8 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -8,6 +8,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -19,6 +20,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -26,14 +28,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
index 747df25c92e..588bf483c29 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -32,7 +34,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake", description = "the fake API")
 public interface FakeApi {
@@ -45,6 +49,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createXmlItem",
         summary = "creates an XmlItem",
         tags = { "fake" },
         responses = {
@@ -69,7 +74,7 @@ public interface FakeApi {
      * @return Output boolean (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterBooleanSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output boolean", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Boolean.class)))
@@ -93,7 +98,7 @@ public interface FakeApi {
      * @return Output composite (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterCompositeSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output composite", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  OuterComposite.class)))
@@ -117,7 +122,7 @@ public interface FakeApi {
      * @return Output number (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterNumberSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output number", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  BigDecimal.class)))
@@ -141,7 +146,7 @@ public interface FakeApi {
      * @return Output string (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterStringSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output string", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class)))
@@ -165,7 +170,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithFileSchema",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -189,7 +194,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithQueryParams",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -214,6 +219,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClientModel",
         summary = "To test \"client\" model",
         tags = { "fake" },
         responses = {
@@ -253,6 +259,7 @@ public interface FakeApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "testEndpointParameters",
         summary = "Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트",
         tags = { "fake" },
         responses = {
@@ -279,8 +286,8 @@ public interface FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "float", required = false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "string", required = false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "password", required = false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "callback", required = false) String paramCallback
     );
@@ -302,6 +309,7 @@ public interface FakeApi {
      *         or Not found (status code 404)
      */
     @Operation(
+        operationId = "testEnumParameters",
         summary = "To test enum parameters",
         tags = { "fake" },
         responses = {
@@ -339,6 +347,7 @@ public interface FakeApi {
      * @return Someting wrong (status code 400)
      */
     @Operation(
+        operationId = "testGroupParameters",
         summary = "Fake endpoint to test group parameters (optional)",
         tags = { "fake" },
         responses = {
@@ -366,6 +375,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testInlineAdditionalProperties",
         summary = "test inline additionalProperties",
         tags = { "fake" },
         responses = {
@@ -390,6 +400,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testJsonFormData",
         summary = "test json serialization of form data",
         tags = { "fake" },
         responses = {
@@ -419,7 +430,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testQueryParameterCollectionFormat",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -447,6 +458,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFileWithRequiredFile",
         summary = "uploads an image (required)",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
index 362ff5ff5e3..7081ba1a430 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -17,6 +19,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -28,6 +31,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -35,14 +39,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
@@ -215,8 +221,8 @@ public class FakeApiController implements FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "float", required = false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "string", required = false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "password", required = false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 7a187a2960e..7856c1ccfde 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -23,7 +23,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
@@ -36,6 +38,7 @@ public interface FakeClassnameTestApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClassname",
         summary = "To test class name in snake case",
         tags = { "fake_classname_tags 123#$%^" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 1f416d5ab25..c28517ba229 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -8,6 +8,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -19,6 +20,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -26,14 +28,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java
index 4043144253a..3395f70b62c 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -25,7 +26,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "pet", description = "the pet API")
 public interface PetApi {
@@ -38,6 +41,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -67,6 +71,7 @@ public interface PetApi {
      *         or Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -96,6 +101,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -126,6 +132,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -156,6 +163,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -187,6 +195,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -218,6 +227,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -248,6 +258,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
index 47d4ffcdb9d..97a3ec705b7 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,6 +2,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -10,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -21,6 +23,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -28,14 +31,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
index 7ce690b7a51..4552b38a3c5 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
@@ -24,7 +24,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "store", description = "the store API")
 public interface StoreApi {
@@ -38,6 +40,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -61,6 +64,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -90,6 +94,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -116,6 +121,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
index 91b88d0652f..9b0ba8bd720 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
@@ -9,6 +9,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -20,6 +21,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -27,14 +29,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java
index 032e49e9e4c..439fa56574e 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java
@@ -25,7 +25,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "user", description = "the user API")
 public interface UserApi {
@@ -38,6 +40,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -60,6 +63,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -82,6 +86,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -106,6 +111,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -131,6 +137,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -158,6 +165,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -182,6 +190,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -207,6 +216,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
index c77024353b9..781b593f564 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
@@ -10,6 +10,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import io.swagger.v3.oas.annotations.security.SecurityRequirement;
 import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -21,6 +22,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -28,14 +30,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/configuration/HomeController.java
index 34bae16b898..61d4ebb3183 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,8 +1,8 @@
 package org.openapitools.configuration;
 
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StreamUtils;
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 70f6bb0d1c4..1facfb48af6 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -30,9 +33,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -41,7 +43,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index ceb28401cd5..9775210209a 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 9455c14cd5f..d2440961a78 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -30,9 +33,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -41,7 +43,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 69e4ba3737e..f28ec12951f 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -78,9 +81,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
-  @Schema(name = "mapString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_string", required = false)
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -106,10 +108,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
-  @Schema(name = "mapNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_number", required = false)
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -135,9 +135,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
-  @Schema(name = "mapInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "map_integer", required = false)
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -163,9 +162,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
-  @Schema(name = "mapBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "map_boolean", required = false)
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -191,10 +189,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
-  @Schema(name = "mapArrayInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_integer", required = false)
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -220,10 +216,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
-  @Schema(name = "mapArrayAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_anytype", required = false)
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -249,10 +243,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
-  @Schema(name = "mapMapString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_string", required = false)
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -278,10 +270,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
-  @Schema(name = "mapMapAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_anytype", required = false)
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -299,9 +289,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
-  @Schema(name = "anytype1", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_1", required = false)
   public Object getAnytype1() {
     return anytype1;
   }
@@ -319,9 +308,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
-  @Schema(name = "anytype2", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_2", required = false)
   public Object getAnytype2() {
     return anytype2;
   }
@@ -339,9 +327,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
-  @Schema(name = "anytype3", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_3", required = false)
   public Object getAnytype3() {
     return anytype3;
   }
@@ -350,7 +337,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -382,7 +368,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index fb06ae322e2..2125dd10695 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -30,9 +33,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -41,7 +43,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 71868e47335..788612115c6 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 75db554b329..f469e4b37d9 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -30,9 +33,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -41,7 +43,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index aa62e4fbb2e..00091c392df 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -30,9 +33,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -41,7 +43,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java
index 26eeb264a74..e762aace509 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java
@@ -12,19 +12,21 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -40,10 +42,8 @@ public class Animal   {
    * Get className
    * @return className
   */
-  @Schema(name = "className", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "className", required = true)
   public String getClassName() {
     return className;
   }
@@ -61,9 +61,8 @@ public class Animal   {
    * Get color
    * @return color
   */
-  @Schema(name = "color", defaultValue = "")
-
-
+  
+  @Schema(name = "color", required = false)
   public String getColor() {
     return color;
   }
@@ -72,7 +71,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -95,7 +93,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 436750d2ef6..0facaee5e60 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -40,10 +43,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
-  @Schema(name = "arrayArrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayArrayNumber", required = false)
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -52,7 +53,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -74,7 +74,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index da9c15f73dd..1be9988fc5b 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -40,10 +43,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
-  @Schema(name = "arrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayNumber", required = false)
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -52,7 +53,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -74,7 +74,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
index 6e995d00cb8..52090b658b8 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -48,9 +51,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
-  @Schema(name = "arrayOfString", defaultValue = "")
-
-
+  
+  @Schema(name = "array_of_string", required = false)
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -76,10 +78,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
-  @Schema(name = "arrayArrayOfInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_integer", required = false)
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -105,10 +105,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
-  @Schema(name = "arrayArrayOfModel", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_model", required = false)
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -117,7 +115,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -141,7 +138,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java
index 1ca8388a6ce..455f600b0ce 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
index f39298398eb..56ea8267235 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -11,12 +11,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -68,9 +71,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -79,7 +81,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +102,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
index ac4b9725888..bab70ab41af 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -43,9 +46,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
-  @Schema(name = "smallCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "smallCamel", required = false)
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -63,9 +65,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
-  @Schema(name = "capitalCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "CapitalCamel", required = false)
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -83,9 +84,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
-  @Schema(name = "smallSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "small_Snake", required = false)
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -103,9 +103,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
-  @Schema(name = "capitalSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "Capital_Snake", required = false)
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -123,9 +122,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
-  @Schema(name = "scAETHFlowPoints", defaultValue = "")
-
-
+  
+  @Schema(name = "SCA_ETH_Flow_Points", required = false)
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -143,9 +141,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
-  @Schema(name = "ATT_NAME", defaultValue = "Name of the pet ")
-
-
+  
+  @Schema(name = "ATT_NAME", description = "Name of the pet ", required = false)
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -154,7 +151,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -181,7 +177,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java
index e41f36a626b..d502537ab4e 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
index 9bc555ab000..5354e8af132 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -28,9 +31,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -39,7 +41,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -61,7 +62,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java
index 03a760ee3fd..57afab36b95 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,9 +34,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -51,10 +53,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public String getName() {
     return name;
   }
@@ -63,7 +63,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -86,7 +85,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
index 878a45986a8..b31b562dbba 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
@@ -10,13 +10,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@Schema(name = "ClassModel",description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ClassModel", description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -29,9 +32,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "_class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -40,7 +42,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -62,7 +63,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java
index 74b85fd2823..31927074d37 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -28,9 +31,8 @@ public class Client   {
    * Get client
    * @return client
   */
-  @Schema(name = "client", defaultValue = "")
-
-
+  
+  @Schema(name = "client", required = false)
   public String getClient() {
     return client;
   }
@@ -39,7 +41,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -61,7 +62,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java
index 1dbce140c90..992bc894a34 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
index 0af97ffbaf4..a82bcdc4907 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -28,9 +31,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -39,7 +41,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -61,7 +62,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
index ef006f92c68..dabe3611437 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -105,9 +108,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
-  @Schema(name = "justSymbol", defaultValue = "")
-
-
+  
+  @Schema(name = "just_symbol", required = false)
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -133,9 +135,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
-  @Schema(name = "arrayEnum", defaultValue = "")
-
-
+  
+  @Schema(name = "array_enum", required = false)
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -144,7 +145,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -167,7 +167,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
index f5edf59363a..d26620f561a 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
@@ -9,6 +9,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
index f67ec5d041a..a9cc411bc89 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -186,9 +189,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
-  @Schema(name = "enumString", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_string", required = false)
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -206,10 +208,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
-  @Schema(name = "enumStringRequired", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "enum_string_required", required = true)
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -227,9 +227,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
-  @Schema(name = "enumInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_integer", required = false)
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -247,9 +246,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
-  @Schema(name = "enumNumber", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_number", required = false)
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -267,10 +265,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
-  @Schema(name = "outerEnum", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "outerEnum", required = false)
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -279,7 +275,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -305,7 +300,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/File.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..87884c44e79
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,82 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@Schema(name = "File", description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @Schema(name = "sourceURI", description = "Test capitalization", required = false)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 2de2ee314c0..8d27d598bb2 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import java.net.URI;
 import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import javax.validation.Valid;
@@ -12,20 +13,23 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -34,26 +38,24 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
-  @Schema(name = "file", defaultValue = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  @Valid 
+  @Schema(name = "file", required = false)
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<File>();
     }
     this.files.add(filesItem);
     return this;
@@ -63,19 +65,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
-  @Schema(name = "files", defaultValue = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  @Valid 
+  @Schema(name = "files", required = false)
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +97,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
index e0203457d83..a82f33264d6 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
@@ -7,6 +7,8 @@ import com.fasterxml.jackson.annotation.JsonCreator;
 import java.math.BigDecimal;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.LocalDate;
 import org.threeten.bp.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +17,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -46,14 +51,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -76,9 +81,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
-  @Schema(name = "integer", defaultValue = "")
-
-@Min(10) @Max(100) 
+  @Min(10) @Max(100) 
+  @Schema(name = "integer", required = false)
   public Integer getInteger() {
     return integer;
   }
@@ -98,9 +102,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
-  @Schema(name = "int32", defaultValue = "")
-
-@Min(20) @Max(200) 
+  @Min(20) @Max(200) 
+  @Schema(name = "int32", required = false)
   public Integer getInt32() {
     return int32;
   }
@@ -118,9 +121,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
-  @Schema(name = "int64", defaultValue = "")
-
-
+  
+  @Schema(name = "int64", required = false)
   public Long getInt64() {
     return int64;
   }
@@ -140,11 +142,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
-  @Schema(name = "number", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
+  @Schema(name = "number", required = true)
   public BigDecimal getNumber() {
     return number;
   }
@@ -164,9 +163,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
-  @Schema(name = "_float", defaultValue = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
+  @DecimalMin("54.3") @DecimalMax("987.6") 
+  @Schema(name = "float", required = false)
   public Float getFloat() {
     return _float;
   }
@@ -186,9 +184,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
-  @Schema(name = "_double", defaultValue = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
+  @DecimalMin("67.8") @DecimalMax("123.4") 
+  @Schema(name = "double", required = false)
   public Double getDouble() {
     return _double;
   }
@@ -206,9 +203,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
-  @Schema(name = "string", defaultValue = "")
-
-@Pattern(regexp = "/[a-z]/i") 
+  @Pattern(regexp = "/[a-z]/i") 
+  @Schema(name = "string", required = false)
   public String getString() {
     return string;
   }
@@ -226,10 +222,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
-  @Schema(name = "_byte", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "byte", required = true)
   public byte[] getByte() {
     return _byte;
   }
@@ -238,7 +232,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -247,15 +241,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
-  @Schema(name = "binary", defaultValue = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  @Valid 
+  @Schema(name = "binary", required = false)
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -268,11 +260,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
-  @Schema(name = "date", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "date", required = true)
   public LocalDate getDate() {
     return date;
   }
@@ -290,10 +279,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -311,10 +298,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -332,10 +317,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", required = true, defaultValue = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
+  @NotNull @Size(min = 10, max = 64) 
+  @Schema(name = "password", required = true)
   public String getPassword() {
     return password;
   }
@@ -353,10 +336,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
-  @Schema(name = "bigDecimal", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "BigDecimal", required = false)
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -365,7 +346,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -400,7 +380,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index d2f0afa1d4a..adc53a60f2c 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -31,9 +34,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -51,9 +53,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
-  @Schema(name = "foo", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "foo", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getFoo() {
     return foo;
   }
@@ -62,7 +63,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -85,7 +85,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java
index ed29ea575ee..81ec542f86b 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -88,10 +91,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
-  @Schema(name = "mapMapOfString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_of_string", required = false)
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -117,9 +118,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
-  @Schema(name = "mapOfEnumString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_of_enum_string", required = false)
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -145,9 +145,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
-  @Schema(name = "directMap", defaultValue = "")
-
-
+  
+  @Schema(name = "direct_map", required = false)
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -173,9 +172,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
-  @Schema(name = "indirectMap", defaultValue = "")
-
-
+  
+  @Schema(name = "indirect_map", required = false)
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -184,7 +182,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -209,7 +206,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index e846cf63782..704d5daf961 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -9,6 +9,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
@@ -16,17 +17,20 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -42,10 +46,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -63,10 +65,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -92,10 +92,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
-  @Schema(name = "map", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map", required = false)
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -104,7 +102,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -128,7 +125,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
index 8aa5b96e1da..21c119570b9 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
@@ -10,13 +10,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@Schema(name = "200_response",description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "200_response", description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -32,9 +35,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public Integer getName() {
     return name;
   }
@@ -52,9 +54,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -63,7 +64,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -86,7 +86,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
index 86af4aba24a..b2190788b39 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -34,9 +37,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -54,9 +56,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -74,9 +75,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -85,7 +85,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -109,7 +108,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelFile.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..f269b47311d
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,82 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@Schema(name = "File",description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @Schema(name = "sourceURI", defaultValue = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelList.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..65083e0155b
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,81 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @Schema(name = "123-list", required = false)
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
index 06bc8e6627c..2c77d8a517a 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
@@ -10,13 +10,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@Schema(name = "Return",description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Return", description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -29,9 +32,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
-  @Schema(name = "_return", defaultValue = "")
-
-
+  
+  @Schema(name = "return", required = false)
   public Integer getReturn() {
     return _return;
   }
@@ -40,7 +42,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -62,7 +63,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java
index 5e755ef8dd1..2dd3efc08b4 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java
@@ -10,13 +10,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@Schema(name = "Name",description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Name", description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -38,10 +41,8 @@ public class Name   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public Integer getName() {
     return name;
   }
@@ -59,9 +60,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
-  @Schema(name = "snakeCase", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "snake_case", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -79,9 +79,8 @@ public class Name   {
    * Get property
    * @return property
   */
-  @Schema(name = "property", defaultValue = "")
-
-
+  
+  @Schema(name = "property", required = false)
   public String getProperty() {
     return property;
   }
@@ -99,9 +98,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
-  @Schema(name = "_123number", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "123Number", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer get123number() {
     return _123number;
   }
@@ -110,7 +108,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -135,7 +132,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
index 88b9009b1dc..e4f864b35b2 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
@@ -11,12 +11,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -29,10 +32,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
-  @Schema(name = "justNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "JustNumber", required = false)
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -41,7 +42,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +63,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java
index 5c9bb7ae7e4..a69c5a43f4e 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java
@@ -5,6 +5,7 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
@@ -12,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -28,7 +32,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -83,9 +87,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -103,9 +106,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -123,9 +125,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -143,10 +144,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -164,9 +163,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -184,9 +182,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -195,7 +192,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -222,7 +218,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
index cea0bf2f757..2a94c21a95d 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
@@ -11,12 +11,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -35,10 +38,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
-  @Schema(name = "myNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "my_number", required = false)
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -56,9 +57,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
-  @Schema(name = "myString", defaultValue = "")
-
-
+  
+  @Schema(name = "my_string", required = false)
   public String getMyString() {
     return myString;
   }
@@ -76,9 +76,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
-  @Schema(name = "myBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "my_boolean", required = false)
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -87,7 +86,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +109,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
index 72e7826828f..6e050d8e150 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
@@ -9,6 +9,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java
index 9ca656bd917..5192f3943c0 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java
@@ -18,12 +18,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 15b221c739b..cf421153515 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -31,9 +34,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -51,9 +53,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
-  @Schema(name = "baz", defaultValue = "")
-
-
+  
+  @Schema(name = "baz", required = false)
   public String getBaz() {
     return baz;
   }
@@ -62,7 +63,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -85,7 +85,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
index 56ced4dc6f0..e52a3838938 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -28,9 +31,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
-  @Schema(name = "$specialPropertyName", defaultValue = "")
-
-
+  
+  @Schema(name = "$special[property.name]", required = false)
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -39,7 +41,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -61,7 +62,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java
index f98b6a0b281..873bb3fc435 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,9 +34,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -51,9 +53,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -62,7 +63,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -85,7 +85,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
index d346c36b80a..625823af85e 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -44,10 +47,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -65,11 +66,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -87,10 +85,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -108,10 +104,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
index c62a0e4dc71..90533252ffd 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -47,10 +50,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", example = "what", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", example = "what", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", example = "1.234", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
-  @Schema(name = "floatItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "float_item", example = "1.234", required = true)
   public Float getFloatItem() {
     return floatItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", example = "-2", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", example = "-2", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -132,10 +126,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", example = "true", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", example = "true", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", example = "[0, 1, 2, 3]", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", example = "[0, 1, 2, 3]", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java
index 155bdf978d5..60b86f5edc6 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java
@@ -10,12 +10,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -49,9 +52,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -69,9 +71,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -89,9 +90,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -109,9 +109,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -129,9 +128,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -149,9 +147,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -169,9 +166,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -189,9 +185,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -200,7 +195,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -229,7 +223,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
index 9f829a1a26f..ac1c8c10e5d 100644
--- a/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/openapi3/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -124,9 +127,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
-  @Schema(name = "attributeString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_string", example = "string", required = false)
   public String getAttributeString() {
     return attributeString;
   }
@@ -144,10 +146,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
-  @Schema(name = "attributeNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "attribute_number", example = "1.234", required = false)
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -165,9 +165,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
-  @Schema(name = "attributeInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_integer", example = "-2", required = false)
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -185,9 +184,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
-  @Schema(name = "attributeBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_boolean", example = "true", required = false)
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -213,9 +211,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
-  @Schema(name = "wrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "wrapped_array", required = false)
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -233,9 +230,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
-  @Schema(name = "nameString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "name_string", example = "string", required = false)
   public String getNameString() {
     return nameString;
   }
@@ -253,10 +249,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
-  @Schema(name = "nameNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "name_number", example = "1.234", required = false)
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -274,9 +268,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
-  @Schema(name = "nameInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "name_integer", example = "-2", required = false)
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -294,9 +287,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
-  @Schema(name = "nameBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "name_boolean", example = "true", required = false)
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -322,9 +314,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
-  @Schema(name = "nameArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_array", required = false)
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -350,9 +341,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
-  @Schema(name = "nameWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_wrapped_array", required = false)
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -370,9 +360,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
-  @Schema(name = "prefixString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_string", example = "string", required = false)
   public String getPrefixString() {
     return prefixString;
   }
@@ -390,10 +379,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
-  @Schema(name = "prefixNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_number", example = "1.234", required = false)
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -411,9 +398,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
-  @Schema(name = "prefixInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_integer", example = "-2", required = false)
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -431,9 +417,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
-  @Schema(name = "prefixBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_boolean", example = "true", required = false)
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -459,9 +444,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
-  @Schema(name = "prefixArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_array", required = false)
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -487,9 +471,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
-  @Schema(name = "prefixWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_wrapped_array", required = false)
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -507,9 +490,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
-  @Schema(name = "namespaceString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_string", example = "string", required = false)
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -527,10 +509,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
-  @Schema(name = "namespaceNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "namespace_number", example = "1.234", required = false)
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -548,9 +528,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
-  @Schema(name = "namespaceInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_integer", example = "-2", required = false)
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -568,9 +547,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
-  @Schema(name = "namespaceBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_boolean", example = "true", required = false)
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -596,9 +574,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
-  @Schema(name = "namespaceArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_array", required = false)
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -624,9 +601,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
-  @Schema(name = "namespaceWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_wrapped_array", required = false)
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -644,9 +620,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
-  @Schema(name = "prefixNsString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_string", example = "string", required = false)
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -664,10 +639,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
-  @Schema(name = "prefixNsNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_ns_number", example = "1.234", required = false)
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -685,9 +658,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
-  @Schema(name = "prefixNsInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_integer", example = "-2", required = false)
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -705,9 +677,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
-  @Schema(name = "prefixNsBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_boolean", example = "true", required = false)
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -733,9 +704,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
-  @Schema(name = "prefixNsArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_array", required = false)
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -761,9 +731,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
-  @Schema(name = "prefixNsWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_wrapped_array", required = false)
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -772,7 +741,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -822,7 +790,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/.openapi-generator/FILES b/samples/openapi3/server/petstore/springboot-delegate/.openapi-generator/FILES
index 9df6c44a321..bd5a0e2c057 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/.openapi-generator/FILES
+++ b/samples/openapi3/server/petstore/springboot-delegate/.openapi-generator/FILES
@@ -47,6 +47,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -54,6 +55,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/openapi3/server/petstore/springboot-delegate/pom.xml b/samples/openapi3/server/petstore/springboot-delegate/pom.xml
index 35758ea6496..8edd9579ef5 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/pom.xml
+++ b/samples/openapi3/server/petstore/springboot-delegate/pom.xml
@@ -9,12 +9,12 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>2.6.2</version>
     </parent>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+          <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java
index c218b2ac8e4..0a6bb7e1c0c 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -23,7 +23,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
@@ -40,6 +42,7 @@ public interface AnotherFakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "call123testSpecialTags",
         summary = "To test special tags",
         tags = { "$another-fake?" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index df11134c806..f57c395c28a 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new AnotherFakeApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index a86542ddf22..2d5e24bcd5f 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java
index 3d0c57a3ded..d1b083bf79f 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -32,7 +34,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake", description = "the fake API")
 public interface FakeApi {
@@ -49,6 +53,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createXmlItem",
         summary = "creates an XmlItem",
         tags = { "fake" },
         responses = {
@@ -75,7 +80,7 @@ public interface FakeApi {
      * @return Output boolean (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterBooleanSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output boolean", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Boolean.class)))
@@ -101,7 +106,7 @@ public interface FakeApi {
      * @return Output composite (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterCompositeSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output composite", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  OuterComposite.class)))
@@ -127,7 +132,7 @@ public interface FakeApi {
      * @return Output number (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterNumberSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output number", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  BigDecimal.class)))
@@ -153,7 +158,7 @@ public interface FakeApi {
      * @return Output string (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterStringSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output string", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class)))
@@ -179,7 +184,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithFileSchema",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -205,7 +210,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithQueryParams",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -232,6 +237,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClientModel",
         summary = "To test \"client\" model",
         tags = { "fake" },
         responses = {
@@ -273,6 +279,7 @@ public interface FakeApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "testEndpointParameters",
         summary = "Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트",
         tags = { "fake" },
         responses = {
@@ -299,8 +306,8 @@ public interface FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "float", required = false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "string", required = false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "password", required = false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
@@ -324,6 +331,7 @@ public interface FakeApi {
      *         or Not found (status code 404)
      */
     @Operation(
+        operationId = "testEnumParameters",
         summary = "To test enum parameters",
         tags = { "fake" },
         responses = {
@@ -363,6 +371,7 @@ public interface FakeApi {
      * @return Someting wrong (status code 400)
      */
     @Operation(
+        operationId = "testGroupParameters",
         summary = "Fake endpoint to test group parameters (optional)",
         tags = { "fake" },
         responses = {
@@ -392,6 +401,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testInlineAdditionalProperties",
         summary = "test inline additionalProperties",
         tags = { "fake" },
         responses = {
@@ -418,6 +428,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testJsonFormData",
         summary = "test json serialization of form data",
         tags = { "fake" },
         responses = {
@@ -449,7 +460,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testQueryParameterCollectionFormat",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -479,6 +490,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFileWithRequiredFile",
         summary = "uploads an image (required)",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java
index 6b22c1aba66..501419787ef 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java
index d3a949e65d8..3796fc00ce5 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.HttpStatus;
@@ -19,12 +21,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 5b83617ed12..69de7240b13 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -23,7 +23,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
@@ -40,6 +42,7 @@ public interface FakeClassnameTestApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClassname",
         summary = "To test class name in snake case",
         tags = { "fake_classname_tags 123#$%^" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 58497641e4c..0e301ab5f9b 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeClassnameTestApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index ed5a6bfc09a..fb689b13f94 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java
index 27d9acc68cc..780ca0a3e75 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -25,7 +26,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "pet", description = "the pet API")
 public interface PetApi {
@@ -42,6 +45,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -73,6 +77,7 @@ public interface PetApi {
      *         or Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -104,6 +109,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -136,6 +142,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -168,6 +175,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -201,6 +209,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -234,6 +243,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -266,6 +276,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java
index 5fa088c6f10..03b76f0b64b 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new PetApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java
index e3adc7d4bca..9c616c14aaa 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -2,6 +2,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -12,12 +13,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java
index d52fb531b9d..631191ae7f8 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java
@@ -24,7 +24,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "store", description = "the store API")
 public interface StoreApi {
@@ -42,6 +44,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -67,6 +70,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -98,6 +102,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -126,6 +131,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java
index 9e08c646ae9..8209043ac02 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new StoreApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java
index dfe4bb31496..e9b7146b52a 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -11,12 +11,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java
index 8e444d75f18..4dcc19500f2 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java
@@ -25,7 +25,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "user", description = "the user API")
 public interface UserApi {
@@ -42,6 +44,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -66,6 +69,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -90,6 +94,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -116,6 +121,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -143,6 +149,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -172,6 +179,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -198,6 +206,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -225,6 +234,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java
index bc2d33598fd..82725d16025 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new UserApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java
index 2efbd71c9dc..c39231c6b29 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -12,12 +12,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/configuration/HomeController.java
index 34bae16b898..61d4ebb3183 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,8 +1,8 @@
 package org.openapitools.configuration;
 
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StreamUtils;
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 0c57ae7dd14..88ea058c0c5 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index b5285ec2f29..0d4d67f1a9e 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index f8ca38c286d..219d797ee64 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index dfd28ccb996..b2245551ad3 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
-  @Schema(name = "mapString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_string", required = false)
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
-  @Schema(name = "mapNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_number", required = false)
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
-  @Schema(name = "mapInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "map_integer", required = false)
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
-  @Schema(name = "mapBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "map_boolean", required = false)
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
-  @Schema(name = "mapArrayInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_integer", required = false)
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
-  @Schema(name = "mapArrayAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_anytype", required = false)
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
-  @Schema(name = "mapMapString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_string", required = false)
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
-  @Schema(name = "mapMapAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_anytype", required = false)
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
-  @Schema(name = "anytype1", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_1", required = false)
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
-  @Schema(name = "anytype2", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_2", required = false)
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
-  @Schema(name = "anytype3", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_3", required = false)
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5fea577ab44..ea102c40ed2 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index e6eee612a24..7a3a5d839f8 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index d7116bd7572..22e47f1bc1c 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index d2022be266f..91f47a9e83e 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java
index 6f096d5069e..ef0fc61b5b6 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java
@@ -14,19 +14,21 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
-  @Schema(name = "className", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "className", required = true)
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
-  @Schema(name = "color", defaultValue = "")
-
-
+  
+  @Schema(name = "color", required = false)
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index ebe36ad761a..ad560c9d834 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
-  @Schema(name = "arrayArrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayArrayNumber", required = false)
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 8158dd44ab8..4409856d5a3 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
-  @Schema(name = "arrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayNumber", required = false)
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java
index 420010561bc..fd25397b6b6 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
-  @Schema(name = "arrayOfString", defaultValue = "")
-
-
+  
+  @Schema(name = "array_of_string", required = false)
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
-  @Schema(name = "arrayArrayOfInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_integer", required = false)
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
-  @Schema(name = "arrayArrayOfModel", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_model", required = false)
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java
index 7f4a080ad8d..275a075f527 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -72,9 +75,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -83,7 +85,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java
index d0a47ab5127..3640a6301af 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +104,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java
index 92d9a7245f1..80d6c5b2851 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
-  @Schema(name = "smallCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "smallCamel", required = false)
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
-  @Schema(name = "capitalCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "CapitalCamel", required = false)
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
-  @Schema(name = "smallSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "small_Snake", required = false)
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
-  @Schema(name = "capitalSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "Capital_Snake", required = false)
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
-  @Schema(name = "scAETHFlowPoints", defaultValue = "")
-
-
+  
+  @Schema(name = "SCA_ETH_Flow_Points", required = false)
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
-  @Schema(name = "ATT_NAME", defaultValue = "Name of the pet ")
-
-
+  
+  @Schema(name = "ATT_NAME", description = "Name of the pet ", required = false)
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java
index 2e496fb4acc..0b3c8b8759b 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java
index b732a62b1bc..19ffd6fffea 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java
index 038fc8df3af..66dd429525d 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java
index fa2a736f4fb..13a83893e61 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@Schema(name = "ClassModel",description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ClassModel", description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "_class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java
index e11bd4ff1b1..9fbd7e3b433 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
-  @Schema(name = "client", defaultValue = "")
-
-
+  
+  @Schema(name = "client", required = false)
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java
index ed5dc71a4ba..36f36600daf 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java
index 2c99bc376c3..cc0bafc92e3 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java
index e1b2df0716a..c3e82d4c028 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
-  @Schema(name = "justSymbol", defaultValue = "")
-
-
+  
+  @Schema(name = "just_symbol", required = false)
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
-  @Schema(name = "arrayEnum", defaultValue = "")
-
-
+  
+  @Schema(name = "array_enum", required = false)
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java
index e3d30c1ad45..4e6027d16c4 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java
index 938af53e2b8..19ea0acc7a7 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
-  @Schema(name = "enumString", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_string", required = false)
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
-  @Schema(name = "enumStringRequired", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "enum_string_required", required = true)
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
-  @Schema(name = "enumInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_integer", required = false)
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
-  @Schema(name = "enumNumber", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_number", required = false)
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
-  @Schema(name = "outerEnum", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "outerEnum", required = false)
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/File.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..a2ee29fbfd6
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@Schema(name = "File", description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @Schema(name = "sourceURI", description = "Test capitalization", required = false)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 0d1e9ca8495..77868e77410 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import java.net.URI;
 import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,24 +40,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
-  @Schema(name = "file", defaultValue = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  @Valid 
+  @Schema(name = "file", required = false)
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
-  @Schema(name = "files", defaultValue = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  @Valid 
+  @Schema(name = "files", required = false)
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java
index 6546370cd32..0c14e2c93c1 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -17,12 +19,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
-  @Schema(name = "integer", defaultValue = "")
-
-@Min(10) @Max(100) 
+  @Min(10) @Max(100) 
+  @Schema(name = "integer", required = false)
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
-  @Schema(name = "int32", defaultValue = "")
-
-@Min(20) @Max(200) 
+  @Min(20) @Max(200) 
+  @Schema(name = "int32", required = false)
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
-  @Schema(name = "int64", defaultValue = "")
-
-
+  
+  @Schema(name = "int64", required = false)
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
-  @Schema(name = "number", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
+  @Schema(name = "number", required = true)
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
-  @Schema(name = "_float", defaultValue = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
+  @DecimalMin("54.3") @DecimalMax("987.6") 
+  @Schema(name = "float", required = false)
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
-  @Schema(name = "_double", defaultValue = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
+  @DecimalMin("67.8") @DecimalMax("123.4") 
+  @Schema(name = "double", required = false)
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
-  @Schema(name = "string", defaultValue = "")
-
-@Pattern(regexp = "/[a-z]/i") 
+  @Pattern(regexp = "/[a-z]/i") 
+  @Schema(name = "string", required = false)
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
-  @Schema(name = "_byte", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "byte", required = true)
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
-  @Schema(name = "binary", defaultValue = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  @Valid 
+  @Schema(name = "binary", required = false)
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
-  @Schema(name = "date", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "date", required = true)
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", required = true, defaultValue = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
+  @NotNull @Size(min = 10, max = 64) 
+  @Schema(name = "password", required = true)
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
-  @Schema(name = "bigDecimal", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "BigDecimal", required = false)
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index dfb615a529f..ec728db1f14 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
-  @Schema(name = "foo", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "foo", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java
index 3ff73062758..2da2a81ac82 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
-  @Schema(name = "mapMapOfString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_of_string", required = false)
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
-  @Schema(name = "mapOfEnumString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_of_enum_string", required = false)
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
-  @Schema(name = "directMap", defaultValue = "")
-
-
+  
+  @Schema(name = "direct_map", required = false)
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
-  @Schema(name = "indirectMap", defaultValue = "")
-
-
+  
+  @Schema(name = "indirect_map", required = false)
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 03a7be43cc4..9681c13f29d 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
-  @Schema(name = "map", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map", required = false)
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java
index 77bf91649b0..48528166d1c 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@Schema(name = "200_response",description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "200_response", description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java
index 2443600df22..4312ff4cc72 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelFile.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..de11d272cc3
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@Schema(name = "File",description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @Schema(name = "sourceURI", defaultValue = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelList.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..11078e7094e
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @Schema(name = "123-list", required = false)
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java
index 0301a47e9f3..37c94a6aa80 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@Schema(name = "Return",description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Return", description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
-  @Schema(name = "_return", defaultValue = "")
-
-
+  
+  @Schema(name = "return", required = false)
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java
index 62a16f80ee0..2876e64e991 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@Schema(name = "Name",description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Name", description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
-  @Schema(name = "snakeCase", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "snake_case", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
-  @Schema(name = "property", defaultValue = "")
-
-
+  
+  @Schema(name = "property", required = false)
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
-  @Schema(name = "_123number", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "123Number", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java
index 521fad80d5a..05c9f0a7785 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
-  @Schema(name = "justNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "JustNumber", required = false)
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java
index 05071bdfe2b..90b0d295718 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java
index a721a3dde6a..14ff8ff8a9f 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
-  @Schema(name = "myNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "my_number", required = false)
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
-  @Schema(name = "myString", defaultValue = "")
-
-
+  
+  @Schema(name = "my_string", required = false)
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
-  @Schema(name = "myBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "my_boolean", required = false)
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java
index ba0cca8a5e8..7fdf6f47de3 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java
index 988eb317134..51d583a02e5 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java
@@ -20,12 +20,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -92,9 +95,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -112,10 +114,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -133,10 +133,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -159,10 +157,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -189,10 +185,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -210,9 +204,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -221,7 +214,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -248,7 +240,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 1c51770a8e6..1d95448aeef 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
-  @Schema(name = "baz", defaultValue = "")
-
-
+  
+  @Schema(name = "baz", required = false)
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java
index 75f4be4e9f8..3dcdd9ee3f5 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
-  @Schema(name = "$specialPropertyName", defaultValue = "")
-
-
+  
+  @Schema(name = "$special[property.name]", required = false)
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java
index 8722df999bf..6b24df20471 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 19e9bf310f7..66695c3e847 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java
index c9a3762bc74..fdc9a096075 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", example = "what", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", example = "what", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", example = "1.234", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
-  @Schema(name = "floatItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "float_item", example = "1.234", required = true)
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", example = "-2", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", example = "-2", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", example = "true", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", example = "true", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", example = "[0, 1, 2, 3]", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", example = "[0, 1, 2, 3]", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java
index 83152a15553..9aae48b0ceb 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java
index 59a183db0f6..b886d9d3f61 100644
--- a/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/openapi3/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
-  @Schema(name = "attributeString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_string", example = "string", required = false)
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
-  @Schema(name = "attributeNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "attribute_number", example = "1.234", required = false)
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
-  @Schema(name = "attributeInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_integer", example = "-2", required = false)
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
-  @Schema(name = "attributeBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_boolean", example = "true", required = false)
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
-  @Schema(name = "wrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "wrapped_array", required = false)
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
-  @Schema(name = "nameString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "name_string", example = "string", required = false)
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
-  @Schema(name = "nameNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "name_number", example = "1.234", required = false)
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
-  @Schema(name = "nameInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "name_integer", example = "-2", required = false)
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
-  @Schema(name = "nameBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "name_boolean", example = "true", required = false)
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
-  @Schema(name = "nameArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_array", required = false)
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
-  @Schema(name = "nameWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_wrapped_array", required = false)
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
-  @Schema(name = "prefixString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_string", example = "string", required = false)
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
-  @Schema(name = "prefixNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_number", example = "1.234", required = false)
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
-  @Schema(name = "prefixInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_integer", example = "-2", required = false)
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
-  @Schema(name = "prefixBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_boolean", example = "true", required = false)
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
-  @Schema(name = "prefixArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_array", required = false)
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
-  @Schema(name = "prefixWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_wrapped_array", required = false)
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
-  @Schema(name = "namespaceString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_string", example = "string", required = false)
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
-  @Schema(name = "namespaceNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "namespace_number", example = "1.234", required = false)
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
-  @Schema(name = "namespaceInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_integer", example = "-2", required = false)
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
-  @Schema(name = "namespaceBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_boolean", example = "true", required = false)
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
-  @Schema(name = "namespaceArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_array", required = false)
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
-  @Schema(name = "namespaceWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_wrapped_array", required = false)
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
-  @Schema(name = "prefixNsString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_string", example = "string", required = false)
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
-  @Schema(name = "prefixNsNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_ns_number", example = "1.234", required = false)
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
-  @Schema(name = "prefixNsInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_integer", example = "-2", required = false)
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
-  @Schema(name = "prefixNsBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_boolean", example = "true", required = false)
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
-  @Schema(name = "prefixNsArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_array", required = false)
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
-  @Schema(name = "prefixNsWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_wrapped_array", required = false)
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES b/samples/openapi3/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES
index e4c32719b54..6d8d3656155 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/pom.xml b/samples/openapi3/server/petstore/springboot-implicitHeaders/pom.xml
index 1034cd0499d..7759fcc3928 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/pom.xml
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/pom.xml
@@ -9,12 +9,12 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>2.6.2</version>
     </parent>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+          <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 7dd09141421..51f7935f655 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -27,7 +27,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
@@ -44,6 +46,7 @@ public interface AnotherFakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "call123testSpecialTags",
         summary = "To test special tags",
         tags = { "$another-fake?" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java
index 6ce73e648e1..5deda500552 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -36,7 +38,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake", description = "the fake API")
 public interface FakeApi {
@@ -53,6 +57,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createXmlItem",
         summary = "creates an XmlItem",
         tags = { "fake" },
         responses = {
@@ -82,7 +87,7 @@ public interface FakeApi {
      * @return Output boolean (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterBooleanSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output boolean", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Boolean.class)))
@@ -111,7 +116,7 @@ public interface FakeApi {
      * @return Output composite (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterCompositeSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output composite", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  OuterComposite.class)))
@@ -149,7 +154,7 @@ public interface FakeApi {
      * @return Output number (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterNumberSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output number", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  BigDecimal.class)))
@@ -178,7 +183,7 @@ public interface FakeApi {
      * @return Output string (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterStringSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output string", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class)))
@@ -207,7 +212,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithFileSchema",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -236,7 +241,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithQueryParams",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -266,6 +271,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClientModel",
         summary = "To test \"client\" model",
         tags = { "fake" },
         responses = {
@@ -319,6 +325,7 @@ public interface FakeApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "testEndpointParameters",
         summary = "Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트",
         tags = { "fake" },
         responses = {
@@ -347,8 +354,8 @@ public interface FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "float", required = false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "string", required = false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "password", required = false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
@@ -371,6 +378,7 @@ public interface FakeApi {
      *         or Not found (status code 404)
      */
     @Operation(
+        operationId = "testEnumParameters",
         summary = "To test enum parameters",
         tags = { "fake" },
         responses = {
@@ -411,6 +419,7 @@ public interface FakeApi {
      * @return Someting wrong (status code 400)
      */
     @Operation(
+        operationId = "testGroupParameters",
         summary = "Fake endpoint to test group parameters (optional)",
         tags = { "fake" },
         responses = {
@@ -443,6 +452,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testInlineAdditionalProperties",
         summary = "test inline additionalProperties",
         tags = { "fake" },
         responses = {
@@ -472,6 +482,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testJsonFormData",
         summary = "test json serialization of form data",
         tags = { "fake" },
         responses = {
@@ -506,7 +517,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testQueryParameterCollectionFormat",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -539,6 +550,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFileWithRequiredFile",
         summary = "uploads an image (required)",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index d335ce440dc..2fbe8511b86 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -27,7 +27,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
@@ -44,6 +46,7 @@ public interface FakeClassnameTestApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClassname",
         summary = "To test class name in snake case",
         tags = { "fake_classname_tags 123#$%^" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java
index b5e20e011ac..c36cf6711c4 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -29,7 +30,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "pet", description = "the pet API")
 public interface PetApi {
@@ -46,6 +49,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -79,6 +83,7 @@ public interface PetApi {
      *         or Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -113,6 +118,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -162,6 +168,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -211,6 +218,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -261,6 +269,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -297,6 +306,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -332,6 +342,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java
index ced9959be44..1cdc49b49c6 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "store", description = "the store API")
 public interface StoreApi {
@@ -46,6 +48,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -74,6 +77,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -108,6 +112,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -153,6 +158,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java
index 8c49dc0dbd0..d1fd8b88d7c 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "user", description = "the user API")
 public interface UserApi {
@@ -46,6 +48,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -73,6 +76,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -100,6 +104,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -129,6 +134,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -159,6 +165,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -205,6 +212,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -234,6 +242,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -264,6 +273,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/configuration/HomeController.java
index 34bae16b898..61d4ebb3183 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,8 +1,8 @@
 package org.openapitools.configuration;
 
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StreamUtils;
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 0c57ae7dd14..88ea058c0c5 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index b5285ec2f29..0d4d67f1a9e 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index f8ca38c286d..219d797ee64 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index dfd28ccb996..b2245551ad3 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
-  @Schema(name = "mapString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_string", required = false)
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
-  @Schema(name = "mapNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_number", required = false)
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
-  @Schema(name = "mapInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "map_integer", required = false)
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
-  @Schema(name = "mapBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "map_boolean", required = false)
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
-  @Schema(name = "mapArrayInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_integer", required = false)
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
-  @Schema(name = "mapArrayAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_anytype", required = false)
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
-  @Schema(name = "mapMapString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_string", required = false)
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
-  @Schema(name = "mapMapAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_anytype", required = false)
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
-  @Schema(name = "anytype1", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_1", required = false)
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
-  @Schema(name = "anytype2", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_2", required = false)
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
-  @Schema(name = "anytype3", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_3", required = false)
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5fea577ab44..ea102c40ed2 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index e6eee612a24..7a3a5d839f8 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index d7116bd7572..22e47f1bc1c 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index d2022be266f..91f47a9e83e 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java
index 6f096d5069e..ef0fc61b5b6 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java
@@ -14,19 +14,21 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
-  @Schema(name = "className", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "className", required = true)
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
-  @Schema(name = "color", defaultValue = "")
-
-
+  
+  @Schema(name = "color", required = false)
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index ebe36ad761a..ad560c9d834 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
-  @Schema(name = "arrayArrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayArrayNumber", required = false)
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 8158dd44ab8..4409856d5a3 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
-  @Schema(name = "arrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayNumber", required = false)
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java
index 420010561bc..fd25397b6b6 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
-  @Schema(name = "arrayOfString", defaultValue = "")
-
-
+  
+  @Schema(name = "array_of_string", required = false)
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
-  @Schema(name = "arrayArrayOfInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_integer", required = false)
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
-  @Schema(name = "arrayArrayOfModel", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_model", required = false)
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java
index 7f4a080ad8d..275a075f527 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -72,9 +75,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -83,7 +85,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java
index d0a47ab5127..3640a6301af 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +104,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java
index 92d9a7245f1..80d6c5b2851 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
-  @Schema(name = "smallCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "smallCamel", required = false)
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
-  @Schema(name = "capitalCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "CapitalCamel", required = false)
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
-  @Schema(name = "smallSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "small_Snake", required = false)
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
-  @Schema(name = "capitalSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "Capital_Snake", required = false)
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
-  @Schema(name = "scAETHFlowPoints", defaultValue = "")
-
-
+  
+  @Schema(name = "SCA_ETH_Flow_Points", required = false)
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
-  @Schema(name = "ATT_NAME", defaultValue = "Name of the pet ")
-
-
+  
+  @Schema(name = "ATT_NAME", description = "Name of the pet ", required = false)
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java
index 2e496fb4acc..0b3c8b8759b 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java
index b732a62b1bc..19ffd6fffea 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java
index 038fc8df3af..66dd429525d 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java
index fa2a736f4fb..13a83893e61 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@Schema(name = "ClassModel",description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ClassModel", description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "_class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java
index e11bd4ff1b1..9fbd7e3b433 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
-  @Schema(name = "client", defaultValue = "")
-
-
+  
+  @Schema(name = "client", required = false)
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java
index ed5dc71a4ba..36f36600daf 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java
index 2c99bc376c3..cc0bafc92e3 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java
index e1b2df0716a..c3e82d4c028 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
-  @Schema(name = "justSymbol", defaultValue = "")
-
-
+  
+  @Schema(name = "just_symbol", required = false)
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
-  @Schema(name = "arrayEnum", defaultValue = "")
-
-
+  
+  @Schema(name = "array_enum", required = false)
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java
index e3d30c1ad45..4e6027d16c4 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java
index 938af53e2b8..19ea0acc7a7 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
-  @Schema(name = "enumString", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_string", required = false)
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
-  @Schema(name = "enumStringRequired", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "enum_string_required", required = true)
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
-  @Schema(name = "enumInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_integer", required = false)
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
-  @Schema(name = "enumNumber", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_number", required = false)
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
-  @Schema(name = "outerEnum", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "outerEnum", required = false)
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/File.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..a2ee29fbfd6
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@Schema(name = "File", description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @Schema(name = "sourceURI", description = "Test capitalization", required = false)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 0d1e9ca8495..77868e77410 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import java.net.URI;
 import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,24 +40,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
-  @Schema(name = "file", defaultValue = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  @Valid 
+  @Schema(name = "file", required = false)
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
-  @Schema(name = "files", defaultValue = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  @Valid 
+  @Schema(name = "files", required = false)
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java
index 6546370cd32..0c14e2c93c1 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -17,12 +19,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
-  @Schema(name = "integer", defaultValue = "")
-
-@Min(10) @Max(100) 
+  @Min(10) @Max(100) 
+  @Schema(name = "integer", required = false)
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
-  @Schema(name = "int32", defaultValue = "")
-
-@Min(20) @Max(200) 
+  @Min(20) @Max(200) 
+  @Schema(name = "int32", required = false)
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
-  @Schema(name = "int64", defaultValue = "")
-
-
+  
+  @Schema(name = "int64", required = false)
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
-  @Schema(name = "number", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
+  @Schema(name = "number", required = true)
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
-  @Schema(name = "_float", defaultValue = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
+  @DecimalMin("54.3") @DecimalMax("987.6") 
+  @Schema(name = "float", required = false)
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
-  @Schema(name = "_double", defaultValue = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
+  @DecimalMin("67.8") @DecimalMax("123.4") 
+  @Schema(name = "double", required = false)
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
-  @Schema(name = "string", defaultValue = "")
-
-@Pattern(regexp = "/[a-z]/i") 
+  @Pattern(regexp = "/[a-z]/i") 
+  @Schema(name = "string", required = false)
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
-  @Schema(name = "_byte", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "byte", required = true)
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
-  @Schema(name = "binary", defaultValue = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  @Valid 
+  @Schema(name = "binary", required = false)
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
-  @Schema(name = "date", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "date", required = true)
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", required = true, defaultValue = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
+  @NotNull @Size(min = 10, max = 64) 
+  @Schema(name = "password", required = true)
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
-  @Schema(name = "bigDecimal", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "BigDecimal", required = false)
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index dfb615a529f..ec728db1f14 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
-  @Schema(name = "foo", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "foo", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java
index 3ff73062758..2da2a81ac82 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
-  @Schema(name = "mapMapOfString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_of_string", required = false)
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
-  @Schema(name = "mapOfEnumString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_of_enum_string", required = false)
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
-  @Schema(name = "directMap", defaultValue = "")
-
-
+  
+  @Schema(name = "direct_map", required = false)
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
-  @Schema(name = "indirectMap", defaultValue = "")
-
-
+  
+  @Schema(name = "indirect_map", required = false)
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 03a7be43cc4..9681c13f29d 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
-  @Schema(name = "map", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map", required = false)
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java
index 77bf91649b0..48528166d1c 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@Schema(name = "200_response",description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "200_response", description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java
index 2443600df22..4312ff4cc72 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelFile.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..de11d272cc3
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@Schema(name = "File",description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @Schema(name = "sourceURI", defaultValue = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelList.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..11078e7094e
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @Schema(name = "123-list", required = false)
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java
index 0301a47e9f3..37c94a6aa80 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@Schema(name = "Return",description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Return", description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
-  @Schema(name = "_return", defaultValue = "")
-
-
+  
+  @Schema(name = "return", required = false)
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java
index 62a16f80ee0..2876e64e991 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@Schema(name = "Name",description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Name", description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
-  @Schema(name = "snakeCase", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "snake_case", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
-  @Schema(name = "property", defaultValue = "")
-
-
+  
+  @Schema(name = "property", required = false)
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
-  @Schema(name = "_123number", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "123Number", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java
index 521fad80d5a..05c9f0a7785 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
-  @Schema(name = "justNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "JustNumber", required = false)
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java
index 05071bdfe2b..90b0d295718 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java
index a721a3dde6a..14ff8ff8a9f 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
-  @Schema(name = "myNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "my_number", required = false)
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
-  @Schema(name = "myString", defaultValue = "")
-
-
+  
+  @Schema(name = "my_string", required = false)
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
-  @Schema(name = "myBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "my_boolean", required = false)
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java
index ba0cca8a5e8..7fdf6f47de3 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java
index 988eb317134..51d583a02e5 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java
@@ -20,12 +20,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -92,9 +95,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -112,10 +114,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -133,10 +133,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -159,10 +157,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -189,10 +185,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -210,9 +204,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -221,7 +214,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -248,7 +240,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 1c51770a8e6..1d95448aeef 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
-  @Schema(name = "baz", defaultValue = "")
-
-
+  
+  @Schema(name = "baz", required = false)
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java
index 75f4be4e9f8..3dcdd9ee3f5 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
-  @Schema(name = "$specialPropertyName", defaultValue = "")
-
-
+  
+  @Schema(name = "$special[property.name]", required = false)
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java
index 8722df999bf..6b24df20471 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 19e9bf310f7..66695c3e847 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java
index c9a3762bc74..fdc9a096075 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", example = "what", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", example = "what", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", example = "1.234", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
-  @Schema(name = "floatItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "float_item", example = "1.234", required = true)
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", example = "-2", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", example = "-2", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", example = "true", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", example = "true", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", example = "[0, 1, 2, 3]", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", example = "[0, 1, 2, 3]", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java
index 83152a15553..9aae48b0ceb 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java
index 59a183db0f6..b886d9d3f61 100644
--- a/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/openapi3/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
-  @Schema(name = "attributeString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_string", example = "string", required = false)
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
-  @Schema(name = "attributeNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "attribute_number", example = "1.234", required = false)
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
-  @Schema(name = "attributeInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_integer", example = "-2", required = false)
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
-  @Schema(name = "attributeBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_boolean", example = "true", required = false)
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
-  @Schema(name = "wrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "wrapped_array", required = false)
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
-  @Schema(name = "nameString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "name_string", example = "string", required = false)
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
-  @Schema(name = "nameNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "name_number", example = "1.234", required = false)
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
-  @Schema(name = "nameInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "name_integer", example = "-2", required = false)
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
-  @Schema(name = "nameBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "name_boolean", example = "true", required = false)
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
-  @Schema(name = "nameArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_array", required = false)
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
-  @Schema(name = "nameWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_wrapped_array", required = false)
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
-  @Schema(name = "prefixString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_string", example = "string", required = false)
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
-  @Schema(name = "prefixNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_number", example = "1.234", required = false)
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
-  @Schema(name = "prefixInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_integer", example = "-2", required = false)
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
-  @Schema(name = "prefixBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_boolean", example = "true", required = false)
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
-  @Schema(name = "prefixArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_array", required = false)
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
-  @Schema(name = "prefixWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_wrapped_array", required = false)
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
-  @Schema(name = "namespaceString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_string", example = "string", required = false)
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
-  @Schema(name = "namespaceNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "namespace_number", example = "1.234", required = false)
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
-  @Schema(name = "namespaceInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_integer", example = "-2", required = false)
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
-  @Schema(name = "namespaceBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_boolean", example = "true", required = false)
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
-  @Schema(name = "namespaceArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_array", required = false)
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
-  @Schema(name = "namespaceWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_wrapped_array", required = false)
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
-  @Schema(name = "prefixNsString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_string", example = "string", required = false)
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
-  @Schema(name = "prefixNsNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_ns_number", example = "1.234", required = false)
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
-  @Schema(name = "prefixNsInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_integer", example = "-2", required = false)
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
-  @Schema(name = "prefixNsBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_boolean", example = "true", required = false)
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
-  @Schema(name = "prefixNsArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_array", required = false)
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
-  @Schema(name = "prefixNsWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_wrapped_array", required = false)
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/.openapi-generator/FILES b/samples/openapi3/server/petstore/springboot-reactive/.openapi-generator/FILES
index 9df6c44a321..bd5a0e2c057 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/.openapi-generator/FILES
+++ b/samples/openapi3/server/petstore/springboot-reactive/.openapi-generator/FILES
@@ -47,6 +47,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -54,6 +55,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/openapi3/server/petstore/springboot-reactive/pom.xml b/samples/openapi3/server/petstore/springboot-reactive/pom.xml
index a6268c2794f..098af25f183 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/pom.xml
+++ b/samples/openapi3/server/petstore/springboot-reactive/pom.xml
@@ -9,12 +9,12 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>2.6.2</version>
     </parent>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+          <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 836fd23b785..833d46effbd 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -27,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
@@ -44,6 +46,7 @@ public interface AnotherFakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "call123testSpecialTags",
         summary = "To test special tags",
         tags = { "$another-fake?" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index df11134c806..f57c395c28a 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new AnotherFakeApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index 2ef11c811c1..575a4e23910 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -14,12 +14,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java
index f6c3d07ae36..565914b869a 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -36,7 +38,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake", description = "the fake API")
 public interface FakeApi {
@@ -53,6 +57,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createXmlItem",
         summary = "creates an XmlItem",
         tags = { "fake" },
         responses = {
@@ -80,7 +85,7 @@ public interface FakeApi {
      * @return Output boolean (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterBooleanSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output boolean", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Boolean.class)))
@@ -107,7 +112,7 @@ public interface FakeApi {
      * @return Output composite (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterCompositeSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output composite", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  OuterComposite.class)))
@@ -134,7 +139,7 @@ public interface FakeApi {
      * @return Output number (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterNumberSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output number", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  BigDecimal.class)))
@@ -161,7 +166,7 @@ public interface FakeApi {
      * @return Output string (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterStringSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output string", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class)))
@@ -188,7 +193,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithFileSchema",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -215,7 +220,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithQueryParams",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -243,6 +248,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClientModel",
         summary = "To test \"client\" model",
         tags = { "fake" },
         responses = {
@@ -285,6 +291,7 @@ public interface FakeApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "testEndpointParameters",
         summary = "Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트",
         tags = { "fake" },
         responses = {
@@ -311,8 +318,8 @@ public interface FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "float", required = false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "string", required = false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestPart(value = "binary", required = false) Flux<Part> binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "password", required = false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "callback", required = false) String paramCallback,
         @Parameter(hidden = true) final ServerWebExchange exchange
@@ -337,6 +344,7 @@ public interface FakeApi {
      *         or Not found (status code 404)
      */
     @Operation(
+        operationId = "testEnumParameters",
         summary = "To test enum parameters",
         tags = { "fake" },
         responses = {
@@ -377,6 +385,7 @@ public interface FakeApi {
      * @return Someting wrong (status code 400)
      */
     @Operation(
+        operationId = "testGroupParameters",
         summary = "Fake endpoint to test group parameters (optional)",
         tags = { "fake" },
         responses = {
@@ -407,6 +416,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testInlineAdditionalProperties",
         summary = "test inline additionalProperties",
         tags = { "fake" },
         responses = {
@@ -434,6 +444,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testJsonFormData",
         summary = "test json serialization of form data",
         tags = { "fake" },
         responses = {
@@ -466,7 +477,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testQueryParameterCollectionFormat",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -497,6 +508,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFileWithRequiredFile",
         summary = "uploads an image (required)",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java
index 6b22c1aba66..501419787ef 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java
index dbe78fa1c7f..0193067433b 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.HttpStatus;
@@ -23,12 +25,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 033122364a6..e0ec6e8b118 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -27,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
@@ -44,6 +46,7 @@ public interface FakeClassnameTestApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClassname",
         summary = "To test class name in snake case",
         tags = { "fake_classname_tags 123#$%^" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 58497641e4c..0e301ab5f9b 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeClassnameTestApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index 4127d96d9e3..bd1f7f3542f 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -14,12 +14,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java
index fff406061b7..b7c32ad6322 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -29,7 +30,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "pet", description = "the pet API")
 public interface PetApi {
@@ -46,6 +49,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -78,6 +82,7 @@ public interface PetApi {
      *         or Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -110,6 +115,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -143,6 +149,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -176,6 +183,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -210,6 +218,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -244,6 +253,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -277,6 +287,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java
index 5fa088c6f10..03b76f0b64b 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new PetApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java
index 8dc1be776ea..b4c51ede918 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -2,6 +2,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -16,12 +17,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java
index 3507fde2794..9d77308dc0d 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "store", description = "the store API")
 public interface StoreApi {
@@ -46,6 +48,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -72,6 +75,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -103,6 +107,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -132,6 +137,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java
index 9e08c646ae9..8209043ac02 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new StoreApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java
index 02daadf024a..d4f1e2efbf9 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -15,12 +15,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java
index 762cc80064d..060c2e17e78 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "user", description = "the user API")
 public interface UserApi {
@@ -46,6 +48,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -71,6 +74,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -96,6 +100,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -123,6 +128,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -151,6 +157,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -181,6 +188,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -208,6 +216,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -235,6 +244,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java
index bc2d33598fd..82725d16025 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new UserApiDelegate() {});
     }
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java
index 3985dd30ecd..063cd6d0ee8 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -16,12 +16,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java
index b1e5bfc21ee..fadcaeb03c6 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,14 +1,15 @@
 package org.openapitools.configuration;
 
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StreamUtils;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.context.annotation.Bean;
 import org.springframework.web.reactive.function.server.RouterFunction;
 import org.springframework.web.reactive.function.server.ServerResponse;
 
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 0c57ae7dd14..88ea058c0c5 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index b5285ec2f29..0d4d67f1a9e 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index f8ca38c286d..219d797ee64 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index dfd28ccb996..b2245551ad3 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
-  @Schema(name = "mapString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_string", required = false)
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
-  @Schema(name = "mapNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_number", required = false)
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
-  @Schema(name = "mapInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "map_integer", required = false)
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
-  @Schema(name = "mapBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "map_boolean", required = false)
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
-  @Schema(name = "mapArrayInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_integer", required = false)
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
-  @Schema(name = "mapArrayAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_anytype", required = false)
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
-  @Schema(name = "mapMapString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_string", required = false)
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
-  @Schema(name = "mapMapAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_anytype", required = false)
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
-  @Schema(name = "anytype1", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_1", required = false)
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
-  @Schema(name = "anytype2", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_2", required = false)
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
-  @Schema(name = "anytype3", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_3", required = false)
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5fea577ab44..ea102c40ed2 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index e6eee612a24..7a3a5d839f8 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index d7116bd7572..22e47f1bc1c 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index d2022be266f..91f47a9e83e 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java
index 6f096d5069e..ef0fc61b5b6 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java
@@ -14,19 +14,21 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
-  @Schema(name = "className", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "className", required = true)
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
-  @Schema(name = "color", defaultValue = "")
-
-
+  
+  @Schema(name = "color", required = false)
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index ebe36ad761a..ad560c9d834 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
-  @Schema(name = "arrayArrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayArrayNumber", required = false)
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 8158dd44ab8..4409856d5a3 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
-  @Schema(name = "arrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayNumber", required = false)
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java
index 420010561bc..fd25397b6b6 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
-  @Schema(name = "arrayOfString", defaultValue = "")
-
-
+  
+  @Schema(name = "array_of_string", required = false)
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
-  @Schema(name = "arrayArrayOfInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_integer", required = false)
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
-  @Schema(name = "arrayArrayOfModel", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_model", required = false)
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java
index 7f4a080ad8d..275a075f527 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -72,9 +75,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -83,7 +85,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java
index d0a47ab5127..3640a6301af 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +104,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java
index 92d9a7245f1..80d6c5b2851 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
-  @Schema(name = "smallCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "smallCamel", required = false)
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
-  @Schema(name = "capitalCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "CapitalCamel", required = false)
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
-  @Schema(name = "smallSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "small_Snake", required = false)
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
-  @Schema(name = "capitalSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "Capital_Snake", required = false)
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
-  @Schema(name = "scAETHFlowPoints", defaultValue = "")
-
-
+  
+  @Schema(name = "SCA_ETH_Flow_Points", required = false)
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
-  @Schema(name = "ATT_NAME", defaultValue = "Name of the pet ")
-
-
+  
+  @Schema(name = "ATT_NAME", description = "Name of the pet ", required = false)
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java
index 2e496fb4acc..0b3c8b8759b 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java
index b732a62b1bc..19ffd6fffea 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java
index 038fc8df3af..66dd429525d 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java
index fa2a736f4fb..13a83893e61 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@Schema(name = "ClassModel",description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ClassModel", description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "_class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java
index e11bd4ff1b1..9fbd7e3b433 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
-  @Schema(name = "client", defaultValue = "")
-
-
+  
+  @Schema(name = "client", required = false)
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java
index ed5dc71a4ba..36f36600daf 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java
index 2c99bc376c3..cc0bafc92e3 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java
index e1b2df0716a..c3e82d4c028 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
-  @Schema(name = "justSymbol", defaultValue = "")
-
-
+  
+  @Schema(name = "just_symbol", required = false)
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
-  @Schema(name = "arrayEnum", defaultValue = "")
-
-
+  
+  @Schema(name = "array_enum", required = false)
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java
index e3d30c1ad45..4e6027d16c4 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java
index 938af53e2b8..19ea0acc7a7 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
-  @Schema(name = "enumString", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_string", required = false)
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
-  @Schema(name = "enumStringRequired", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "enum_string_required", required = true)
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
-  @Schema(name = "enumInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_integer", required = false)
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
-  @Schema(name = "enumNumber", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_number", required = false)
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
-  @Schema(name = "outerEnum", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "outerEnum", required = false)
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/File.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..a2ee29fbfd6
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@Schema(name = "File", description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @Schema(name = "sourceURI", description = "Test capitalization", required = false)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 0d1e9ca8495..77868e77410 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import java.net.URI;
 import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,24 +40,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
-  @Schema(name = "file", defaultValue = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  @Valid 
+  @Schema(name = "file", required = false)
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
-  @Schema(name = "files", defaultValue = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  @Valid 
+  @Schema(name = "files", required = false)
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java
index 6546370cd32..0c14e2c93c1 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -17,12 +19,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
-  @Schema(name = "integer", defaultValue = "")
-
-@Min(10) @Max(100) 
+  @Min(10) @Max(100) 
+  @Schema(name = "integer", required = false)
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
-  @Schema(name = "int32", defaultValue = "")
-
-@Min(20) @Max(200) 
+  @Min(20) @Max(200) 
+  @Schema(name = "int32", required = false)
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
-  @Schema(name = "int64", defaultValue = "")
-
-
+  
+  @Schema(name = "int64", required = false)
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
-  @Schema(name = "number", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
+  @Schema(name = "number", required = true)
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
-  @Schema(name = "_float", defaultValue = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
+  @DecimalMin("54.3") @DecimalMax("987.6") 
+  @Schema(name = "float", required = false)
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
-  @Schema(name = "_double", defaultValue = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
+  @DecimalMin("67.8") @DecimalMax("123.4") 
+  @Schema(name = "double", required = false)
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
-  @Schema(name = "string", defaultValue = "")
-
-@Pattern(regexp = "/[a-z]/i") 
+  @Pattern(regexp = "/[a-z]/i") 
+  @Schema(name = "string", required = false)
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
-  @Schema(name = "_byte", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "byte", required = true)
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
-  @Schema(name = "binary", defaultValue = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  @Valid 
+  @Schema(name = "binary", required = false)
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
-  @Schema(name = "date", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "date", required = true)
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", required = true, defaultValue = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
+  @NotNull @Size(min = 10, max = 64) 
+  @Schema(name = "password", required = true)
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
-  @Schema(name = "bigDecimal", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "BigDecimal", required = false)
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index dfb615a529f..ec728db1f14 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
-  @Schema(name = "foo", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "foo", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java
index 3ff73062758..2da2a81ac82 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
-  @Schema(name = "mapMapOfString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_of_string", required = false)
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
-  @Schema(name = "mapOfEnumString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_of_enum_string", required = false)
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
-  @Schema(name = "directMap", defaultValue = "")
-
-
+  
+  @Schema(name = "direct_map", required = false)
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
-  @Schema(name = "indirectMap", defaultValue = "")
-
-
+  
+  @Schema(name = "indirect_map", required = false)
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 03a7be43cc4..9681c13f29d 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
-  @Schema(name = "map", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map", required = false)
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java
index 77bf91649b0..48528166d1c 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@Schema(name = "200_response",description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "200_response", description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java
index 2443600df22..4312ff4cc72 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelFile.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..de11d272cc3
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@Schema(name = "File",description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @Schema(name = "sourceURI", defaultValue = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelList.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..11078e7094e
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @Schema(name = "123-list", required = false)
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java
index 0301a47e9f3..37c94a6aa80 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@Schema(name = "Return",description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Return", description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
-  @Schema(name = "_return", defaultValue = "")
-
-
+  
+  @Schema(name = "return", required = false)
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java
index 62a16f80ee0..2876e64e991 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@Schema(name = "Name",description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Name", description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
-  @Schema(name = "snakeCase", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "snake_case", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
-  @Schema(name = "property", defaultValue = "")
-
-
+  
+  @Schema(name = "property", required = false)
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
-  @Schema(name = "_123number", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "123Number", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java
index 521fad80d5a..05c9f0a7785 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
-  @Schema(name = "justNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "JustNumber", required = false)
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java
index 05071bdfe2b..90b0d295718 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java
index a721a3dde6a..14ff8ff8a9f 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
-  @Schema(name = "myNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "my_number", required = false)
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
-  @Schema(name = "myString", defaultValue = "")
-
-
+  
+  @Schema(name = "my_string", required = false)
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
-  @Schema(name = "myBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "my_boolean", required = false)
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java
index ba0cca8a5e8..7fdf6f47de3 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java
index 988eb317134..51d583a02e5 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java
@@ -20,12 +20,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -92,9 +95,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -112,10 +114,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -133,10 +133,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -159,10 +157,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -189,10 +185,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -210,9 +204,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -221,7 +214,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -248,7 +240,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 1c51770a8e6..1d95448aeef 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
-  @Schema(name = "baz", defaultValue = "")
-
-
+  
+  @Schema(name = "baz", required = false)
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java
index 75f4be4e9f8..3dcdd9ee3f5 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
-  @Schema(name = "$specialPropertyName", defaultValue = "")
-
-
+  
+  @Schema(name = "$special[property.name]", required = false)
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java
index 8722df999bf..6b24df20471 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 19e9bf310f7..66695c3e847 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java
index c9a3762bc74..fdc9a096075 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", example = "what", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", example = "what", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", example = "1.234", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
-  @Schema(name = "floatItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "float_item", example = "1.234", required = true)
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", example = "-2", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", example = "-2", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", example = "true", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", example = "true", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", example = "[0, 1, 2, 3]", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", example = "[0, 1, 2, 3]", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java
index 83152a15553..9aae48b0ceb 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java
index 59a183db0f6..b886d9d3f61 100644
--- a/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/openapi3/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
-  @Schema(name = "attributeString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_string", example = "string", required = false)
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
-  @Schema(name = "attributeNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "attribute_number", example = "1.234", required = false)
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
-  @Schema(name = "attributeInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_integer", example = "-2", required = false)
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
-  @Schema(name = "attributeBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_boolean", example = "true", required = false)
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
-  @Schema(name = "wrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "wrapped_array", required = false)
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
-  @Schema(name = "nameString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "name_string", example = "string", required = false)
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
-  @Schema(name = "nameNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "name_number", example = "1.234", required = false)
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
-  @Schema(name = "nameInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "name_integer", example = "-2", required = false)
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
-  @Schema(name = "nameBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "name_boolean", example = "true", required = false)
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
-  @Schema(name = "nameArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_array", required = false)
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
-  @Schema(name = "nameWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_wrapped_array", required = false)
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
-  @Schema(name = "prefixString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_string", example = "string", required = false)
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
-  @Schema(name = "prefixNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_number", example = "1.234", required = false)
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
-  @Schema(name = "prefixInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_integer", example = "-2", required = false)
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
-  @Schema(name = "prefixBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_boolean", example = "true", required = false)
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
-  @Schema(name = "prefixArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_array", required = false)
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
-  @Schema(name = "prefixWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_wrapped_array", required = false)
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
-  @Schema(name = "namespaceString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_string", example = "string", required = false)
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
-  @Schema(name = "namespaceNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "namespace_number", example = "1.234", required = false)
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
-  @Schema(name = "namespaceInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_integer", example = "-2", required = false)
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
-  @Schema(name = "namespaceBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_boolean", example = "true", required = false)
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
-  @Schema(name = "namespaceArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_array", required = false)
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
-  @Schema(name = "namespaceWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_wrapped_array", required = false)
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
-  @Schema(name = "prefixNsString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_string", example = "string", required = false)
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
-  @Schema(name = "prefixNsNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_ns_number", example = "1.234", required = false)
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
-  @Schema(name = "prefixNsInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_integer", example = "-2", required = false)
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
-  @Schema(name = "prefixNsBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_boolean", example = "true", required = false)
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
-  @Schema(name = "prefixNsArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_array", required = false)
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
-  @Schema(name = "prefixNsWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_wrapped_array", required = false)
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/.openapi-generator/FILES b/samples/openapi3/server/petstore/springboot-useoptional/.openapi-generator/FILES
index e4c32719b54..6d8d3656155 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/.openapi-generator/FILES
+++ b/samples/openapi3/server/petstore/springboot-useoptional/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/pom.xml b/samples/openapi3/server/petstore/springboot-useoptional/pom.xml
index 800e0576cb5..975547fc709 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/pom.xml
+++ b/samples/openapi3/server/petstore/springboot-useoptional/pom.xml
@@ -9,12 +9,12 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>2.6.2</version>
     </parent>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+          <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java
index abbd497869b..919f448abac 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -27,7 +27,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
@@ -44,6 +46,7 @@ public interface AnotherFakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "call123testSpecialTags",
         summary = "To test special tags",
         tags = { "$another-fake?" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java
index 89d2bb8866e..0976fbe1e9d 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.v3.oas.annotations.Operation;
@@ -36,7 +38,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake", description = "the fake API")
 public interface FakeApi {
@@ -53,6 +57,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createXmlItem",
         summary = "creates an XmlItem",
         tags = { "fake" },
         responses = {
@@ -80,7 +85,7 @@ public interface FakeApi {
      * @return Output boolean (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterBooleanSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output boolean", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  Boolean.class)))
@@ -107,7 +112,7 @@ public interface FakeApi {
      * @return Output composite (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterCompositeSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output composite", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  OuterComposite.class)))
@@ -143,7 +148,7 @@ public interface FakeApi {
      * @return Output number (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterNumberSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output number", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  BigDecimal.class)))
@@ -170,7 +175,7 @@ public interface FakeApi {
      * @return Output string (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "fakeOuterStringSerialize",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Output string", content = @Content(mediaType = "application/json", schema = @Schema(implementation =  String.class)))
@@ -197,7 +202,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithFileSchema",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -224,7 +229,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testBodyWithQueryParams",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -252,6 +257,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClientModel",
         summary = "To test \"client\" model",
         tags = { "fake" },
         responses = {
@@ -303,6 +309,7 @@ public interface FakeApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "testEndpointParameters",
         summary = "Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트",
         tags = { "fake" },
         responses = {
@@ -329,8 +336,8 @@ public interface FakeApi {
         @Parameter(name = "float", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "float", required = false) Float _float,
         @Parameter(name = "string", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "string", required = false) String string,
         @Parameter(name = "binary", description = "None", schema = @Schema(description = "")) @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @Parameter(name = "date", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @Parameter(name = "dateTime", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @Parameter(name = "password", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "password", required = false) String password,
         @Parameter(name = "callback", description = "None", schema = @Schema(description = "")) @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
@@ -355,6 +362,7 @@ public interface FakeApi {
      *         or Not found (status code 404)
      */
     @Operation(
+        operationId = "testEnumParameters",
         summary = "To test enum parameters",
         tags = { "fake" },
         responses = {
@@ -395,6 +403,7 @@ public interface FakeApi {
      * @return Someting wrong (status code 400)
      */
     @Operation(
+        operationId = "testGroupParameters",
         summary = "Fake endpoint to test group parameters (optional)",
         tags = { "fake" },
         responses = {
@@ -425,6 +434,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testInlineAdditionalProperties",
         summary = "test inline additionalProperties",
         tags = { "fake" },
         responses = {
@@ -452,6 +462,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testJsonFormData",
         summary = "test json serialization of form data",
         tags = { "fake" },
         responses = {
@@ -484,7 +495,7 @@ public interface FakeApi {
      * @return Success (status code 200)
      */
     @Operation(
-        summary = "",
+        operationId = "testQueryParameterCollectionFormat",
         tags = { "fake" },
         responses = {
             @ApiResponse(responseCode = "200", description = "Success")
@@ -515,6 +526,7 @@ public interface FakeApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFileWithRequiredFile",
         summary = "uploads an image (required)",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index bbece4326a5..2e1880a7241 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -27,7 +27,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
@@ -44,6 +46,7 @@ public interface FakeClassnameTestApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "testClassname",
         summary = "To test class name in snake case",
         tags = { "fake_classname_tags 123#$%^" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java
index 37f094004be..b375a9b69fc 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
@@ -29,7 +30,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "pet", description = "the pet API")
 public interface PetApi {
@@ -46,6 +49,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -78,6 +82,7 @@ public interface PetApi {
      *         or Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -110,6 +115,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -157,6 +163,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -204,6 +211,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -252,6 +260,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -286,6 +295,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -319,6 +329,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java
index c3450d2baee..e5918a3b05d 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "store", description = "the store API")
 public interface StoreApi {
@@ -46,6 +48,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -72,6 +75,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -104,6 +108,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -147,6 +152,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java
index 7ac0232cc50..cfa50be9667 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "user", description = "the user API")
 public interface UserApi {
@@ -46,6 +48,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -71,6 +74,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -96,6 +100,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -123,6 +128,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -151,6 +157,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -195,6 +202,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -222,6 +230,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -250,6 +259,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/configuration/HomeController.java
index 34bae16b898..61d4ebb3183 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,8 +1,8 @@
 package org.openapitools.configuration;
 
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StreamUtils;
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 0c57ae7dd14..88ea058c0c5 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index b5285ec2f29..0d4d67f1a9e 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index f8ca38c286d..219d797ee64 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index dfd28ccb996..b2245551ad3 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
-  @Schema(name = "mapString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_string", required = false)
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
-  @Schema(name = "mapNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_number", required = false)
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
-  @Schema(name = "mapInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "map_integer", required = false)
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
-  @Schema(name = "mapBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "map_boolean", required = false)
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
-  @Schema(name = "mapArrayInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_integer", required = false)
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
-  @Schema(name = "mapArrayAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_array_anytype", required = false)
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
-  @Schema(name = "mapMapString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_string", required = false)
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
-  @Schema(name = "mapMapAnytype", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_anytype", required = false)
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
-  @Schema(name = "anytype1", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_1", required = false)
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
-  @Schema(name = "anytype2", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_2", required = false)
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
-  @Schema(name = "anytype3", defaultValue = "")
-
-
+  
+  @Schema(name = "anytype_3", required = false)
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5fea577ab44..ea102c40ed2 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index e6eee612a24..7a3a5d839f8 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index d7116bd7572..22e47f1bc1c 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index d2022be266f..91f47a9e83e 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java
index 6f096d5069e..ef0fc61b5b6 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java
@@ -14,19 +14,21 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
-  @Schema(name = "className", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "className", required = true)
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
-  @Schema(name = "color", defaultValue = "")
-
-
+  
+  @Schema(name = "color", required = false)
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index ebe36ad761a..ad560c9d834 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
-  @Schema(name = "arrayArrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayArrayNumber", required = false)
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 8158dd44ab8..4409856d5a3 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
-  @Schema(name = "arrayNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "ArrayNumber", required = false)
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java
index 420010561bc..fd25397b6b6 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
-  @Schema(name = "arrayOfString", defaultValue = "")
-
-
+  
+  @Schema(name = "array_of_string", required = false)
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
-  @Schema(name = "arrayArrayOfInteger", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_integer", required = false)
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
-  @Schema(name = "arrayArrayOfModel", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "array_array_of_model", required = false)
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java
index 7f4a080ad8d..275a075f527 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -72,9 +75,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -83,7 +85,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java
index d0a47ab5127..3640a6301af 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
-  @Schema(name = "kind", defaultValue = "")
-
-
+  
+  @Schema(name = "kind", required = false)
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +104,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java
index 92d9a7245f1..80d6c5b2851 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
-  @Schema(name = "smallCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "smallCamel", required = false)
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
-  @Schema(name = "capitalCamel", defaultValue = "")
-
-
+  
+  @Schema(name = "CapitalCamel", required = false)
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
-  @Schema(name = "smallSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "small_Snake", required = false)
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
-  @Schema(name = "capitalSnake", defaultValue = "")
-
-
+  
+  @Schema(name = "Capital_Snake", required = false)
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
-  @Schema(name = "scAETHFlowPoints", defaultValue = "")
-
-
+  
+  @Schema(name = "SCA_ETH_Flow_Points", required = false)
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
-  @Schema(name = "ATT_NAME", defaultValue = "Name of the pet ")
-
-
+  
+  @Schema(name = "ATT_NAME", description = "Name of the pet ", required = false)
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java
index 2e496fb4acc..0b3c8b8759b 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java
index b732a62b1bc..19ffd6fffea 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
-  @Schema(name = "declawed", defaultValue = "")
-
-
+  
+  @Schema(name = "declawed", required = false)
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java
index 038fc8df3af..66dd429525d 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java
index fa2a736f4fb..13a83893e61 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@Schema(name = "ClassModel",description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ClassModel", description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "_class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java
index e11bd4ff1b1..9fbd7e3b433 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
-  @Schema(name = "client", defaultValue = "")
-
-
+  
+  @Schema(name = "client", required = false)
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java
index ed5dc71a4ba..36f36600daf 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java
index 2c99bc376c3..cc0bafc92e3 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
-  @Schema(name = "breed", defaultValue = "")
-
-
+  
+  @Schema(name = "breed", required = false)
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java
index e1b2df0716a..c3e82d4c028 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
-  @Schema(name = "justSymbol", defaultValue = "")
-
-
+  
+  @Schema(name = "just_symbol", required = false)
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
-  @Schema(name = "arrayEnum", defaultValue = "")
-
-
+  
+  @Schema(name = "array_enum", required = false)
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java
index e3d30c1ad45..4e6027d16c4 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java
index 938af53e2b8..19ea0acc7a7 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
-  @Schema(name = "enumString", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_string", required = false)
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
-  @Schema(name = "enumStringRequired", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "enum_string_required", required = true)
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
-  @Schema(name = "enumInteger", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_integer", required = false)
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
-  @Schema(name = "enumNumber", defaultValue = "")
-
-
+  
+  @Schema(name = "enum_number", required = false)
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
-  @Schema(name = "outerEnum", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "outerEnum", required = false)
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/File.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..a2ee29fbfd6
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@Schema(name = "File", description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @Schema(name = "sourceURI", description = "Test capitalization", required = false)
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 0d1e9ca8495..77868e77410 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import java.net.URI;
 import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,24 +40,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
-  @Schema(name = "file", defaultValue = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  @Valid 
+  @Schema(name = "file", required = false)
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
-  @Schema(name = "files", defaultValue = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  @Valid 
+  @Schema(name = "files", required = false)
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java
index 6546370cd32..0c14e2c93c1 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -17,12 +19,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
-  @Schema(name = "integer", defaultValue = "")
-
-@Min(10) @Max(100) 
+  @Min(10) @Max(100) 
+  @Schema(name = "integer", required = false)
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
-  @Schema(name = "int32", defaultValue = "")
-
-@Min(20) @Max(200) 
+  @Min(20) @Max(200) 
+  @Schema(name = "int32", required = false)
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
-  @Schema(name = "int64", defaultValue = "")
-
-
+  
+  @Schema(name = "int64", required = false)
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
-  @Schema(name = "number", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
+  @Schema(name = "number", required = true)
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
-  @Schema(name = "_float", defaultValue = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
+  @DecimalMin("54.3") @DecimalMax("987.6") 
+  @Schema(name = "float", required = false)
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
-  @Schema(name = "_double", defaultValue = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
+  @DecimalMin("67.8") @DecimalMax("123.4") 
+  @Schema(name = "double", required = false)
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
-  @Schema(name = "string", defaultValue = "")
-
-@Pattern(regexp = "/[a-z]/i") 
+  @Pattern(regexp = "/[a-z]/i") 
+  @Schema(name = "string", required = false)
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
-  @Schema(name = "_byte", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "byte", required = true)
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
-  @Schema(name = "binary", defaultValue = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  @Valid 
+  @Schema(name = "binary", required = false)
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
-  @Schema(name = "date", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "date", required = true)
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", example = "72f98069-206d-4f12-9f12-3d1e525a8e84", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", required = true, defaultValue = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
+  @NotNull @Size(min = 10, max = 64) 
+  @Schema(name = "password", required = true)
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
-  @Schema(name = "bigDecimal", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "BigDecimal", required = false)
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index dfb615a529f..ec728db1f14 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
-  @Schema(name = "foo", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "foo", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java
index 3ff73062758..2da2a81ac82 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
-  @Schema(name = "mapMapOfString", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map_map_of_string", required = false)
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
-  @Schema(name = "mapOfEnumString", defaultValue = "")
-
-
+  
+  @Schema(name = "map_of_enum_string", required = false)
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
-  @Schema(name = "directMap", defaultValue = "")
-
-
+  
+  @Schema(name = "direct_map", required = false)
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
-  @Schema(name = "indirectMap", defaultValue = "")
-
-
+  
+  @Schema(name = "indirect_map", required = false)
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 03a7be43cc4..9681c13f29d 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -10,6 +10,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
-  @Schema(name = "uuid", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "uuid", required = false)
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
-  @Schema(name = "dateTime", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "dateTime", required = false)
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
-  @Schema(name = "map", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "map", required = false)
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java
index 77bf91649b0..48528166d1c 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@Schema(name = "200_response",description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "200_response", description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
-  @Schema(name = "propertyClass", defaultValue = "")
-
-
+  
+  @Schema(name = "class", required = false)
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java
index 2443600df22..4312ff4cc72 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelFile.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..de11d272cc3
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@Schema(name = "File",description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @Schema(name = "sourceURI", defaultValue = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelList.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..11078e7094e
--- /dev/null
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @Schema(name = "123-list", required = false)
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java
index 0301a47e9f3..37c94a6aa80 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@Schema(name = "Return",description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Return", description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
-  @Schema(name = "_return", defaultValue = "")
-
-
+  
+  @Schema(name = "return", required = false)
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java
index 62a16f80ee0..2876e64e991 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@Schema(name = "Name",description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Name", description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", required = true)
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
-  @Schema(name = "snakeCase", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "snake_case", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
-  @Schema(name = "property", defaultValue = "")
-
-
+  
+  @Schema(name = "property", required = false)
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
-  @Schema(name = "_123number", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "123Number", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java
index 521fad80d5a..05c9f0a7785 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
-  @Schema(name = "justNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "JustNumber", required = false)
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java
index 05071bdfe2b..90b0d295718 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java
index a721a3dde6a..14ff8ff8a9f 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
-  @Schema(name = "myNumber", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "my_number", required = false)
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
-  @Schema(name = "myString", defaultValue = "")
-
-
+  
+  @Schema(name = "my_string", required = false)
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
-  @Schema(name = "myBoolean", defaultValue = "")
-
-
+  
+  @Schema(name = "my_boolean", required = false)
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java
index ba0cca8a5e8..7fdf6f47de3 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java
@@ -11,6 +11,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java
index 988eb317134..51d583a02e5 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java
@@ -20,12 +20,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -92,9 +95,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -112,10 +114,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -133,10 +133,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -159,10 +157,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -189,10 +185,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -210,9 +204,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -221,7 +214,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -248,7 +240,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 1c51770a8e6..1d95448aeef 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
-  @Schema(name = "bar", readOnly = true, defaultValue = "")
-
-
+  
+  @Schema(name = "bar", accessMode = Schema.AccessMode.READ_ONLY, required = false)
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
-  @Schema(name = "baz", defaultValue = "")
-
-
+  
+  @Schema(name = "baz", required = false)
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java
index 75f4be4e9f8..3dcdd9ee3f5 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
-  @Schema(name = "$specialPropertyName", defaultValue = "")
-
-
+  
+  @Schema(name = "$special[property.name]", required = false)
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java
index 8722df999bf..6b24df20471 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 19e9bf310f7..66695c3e847 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java
index c9a3762bc74..fdc9a096075 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
-  @Schema(name = "stringItem", example = "what", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "string_item", example = "what", required = true)
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
-  @Schema(name = "numberItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-  @Valid
-
+  @NotNull @Valid 
+  @Schema(name = "number_item", example = "1.234", required = true)
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
-  @Schema(name = "floatItem", example = "1.234", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "float_item", example = "1.234", required = true)
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
-  @Schema(name = "integerItem", example = "-2", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "integer_item", example = "-2", required = true)
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
-  @Schema(name = "boolItem", example = "true", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "bool_item", example = "true", required = true)
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
-  @Schema(name = "arrayItem", example = "[0, 1, 2, 3]", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "array_item", example = "[0, 1, 2, 3]", required = true)
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java
index 83152a15553..9aae48b0ceb 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java
index 59a183db0f6..b886d9d3f61 100644
--- a/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/openapi3/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
-  @Schema(name = "attributeString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_string", example = "string", required = false)
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
-  @Schema(name = "attributeNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "attribute_number", example = "1.234", required = false)
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
-  @Schema(name = "attributeInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_integer", example = "-2", required = false)
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
-  @Schema(name = "attributeBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "attribute_boolean", example = "true", required = false)
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
-  @Schema(name = "wrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "wrapped_array", required = false)
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
-  @Schema(name = "nameString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "name_string", example = "string", required = false)
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
-  @Schema(name = "nameNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "name_number", example = "1.234", required = false)
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
-  @Schema(name = "nameInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "name_integer", example = "-2", required = false)
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
-  @Schema(name = "nameBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "name_boolean", example = "true", required = false)
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
-  @Schema(name = "nameArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_array", required = false)
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
-  @Schema(name = "nameWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "name_wrapped_array", required = false)
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
-  @Schema(name = "prefixString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_string", example = "string", required = false)
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
-  @Schema(name = "prefixNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_number", example = "1.234", required = false)
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
-  @Schema(name = "prefixInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_integer", example = "-2", required = false)
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
-  @Schema(name = "prefixBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_boolean", example = "true", required = false)
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
-  @Schema(name = "prefixArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_array", required = false)
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
-  @Schema(name = "prefixWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_wrapped_array", required = false)
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
-  @Schema(name = "namespaceString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_string", example = "string", required = false)
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
-  @Schema(name = "namespaceNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "namespace_number", example = "1.234", required = false)
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
-  @Schema(name = "namespaceInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_integer", example = "-2", required = false)
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
-  @Schema(name = "namespaceBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_boolean", example = "true", required = false)
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
-  @Schema(name = "namespaceArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_array", required = false)
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
-  @Schema(name = "namespaceWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "namespace_wrapped_array", required = false)
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
-  @Schema(name = "prefixNsString", example = "string", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_string", example = "string", required = false)
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
-  @Schema(name = "prefixNsNumber", example = "1.234", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "prefix_ns_number", example = "1.234", required = false)
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
-  @Schema(name = "prefixNsInteger", example = "-2", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_integer", example = "-2", required = false)
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
-  @Schema(name = "prefixNsBoolean", example = "true", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_boolean", example = "true", required = false)
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
-  @Schema(name = "prefixNsArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_array", required = false)
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
-  @Schema(name = "prefixNsWrappedArray", defaultValue = "")
-
-
+  
+  @Schema(name = "prefix_ns_wrapped_array", required = false)
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot/pom.xml b/samples/openapi3/server/petstore/springboot/pom.xml
index d0efb3028ce..4320644df2c 100644
--- a/samples/openapi3/server/petstore/springboot/pom.xml
+++ b/samples/openapi3/server/petstore/springboot/pom.xml
@@ -9,12 +9,12 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>2.1.11</swagger-core-version>
+        <springdoc.version>1.6.4</springdoc.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.8</version>
+        <version>2.6.2</version>
     </parent>
     <build>
         <sourceDirectory>src/main/java</sourceDirectory>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+          <!--SpringDoc dependencies -->
         <dependency>
-            <groupId>io.swagger.core.v3</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-ui</artifactId>
+            <version>${springdoc.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java
index 03f93c03334..4f63d7c709e 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Parameters;
@@ -28,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "pet", description = "the pet API")
 public interface PetApi {
@@ -45,6 +48,7 @@ public interface PetApi {
      *         or Invalid input (status code 405)
      */
     @Operation(
+        operationId = "addPet",
         summary = "Add a new pet to the store",
         tags = { "pet" },
         responses = {
@@ -91,6 +95,7 @@ public interface PetApi {
      * @return Invalid pet value (status code 400)
      */
     @Operation(
+        operationId = "deletePet",
         summary = "Deletes a pet",
         tags = { "pet" },
         responses = {
@@ -122,6 +127,7 @@ public interface PetApi {
      *         or Invalid status value (status code 400)
      */
     @Operation(
+        operationId = "findPetsByStatus",
         summary = "Finds Pets by status",
         tags = { "pet" },
         responses = {
@@ -169,6 +175,7 @@ public interface PetApi {
      * @deprecated
      */
     @Operation(
+        operationId = "findPetsByTags",
         summary = "Finds Pets by tags",
         tags = { "pet" },
         responses = {
@@ -216,6 +223,7 @@ public interface PetApi {
      *         or Pet not found (status code 404)
      */
     @Operation(
+        operationId = "getPetById",
         summary = "Find pet by ID",
         tags = { "pet" },
         responses = {
@@ -264,6 +272,7 @@ public interface PetApi {
      *         or Validation exception (status code 405)
      */
     @Operation(
+        operationId = "updatePet",
         summary = "Update an existing pet",
         tags = { "pet" },
         responses = {
@@ -313,6 +322,7 @@ public interface PetApi {
      * @return Invalid input (status code 405)
      */
     @Operation(
+        operationId = "updatePetWithForm",
         summary = "Updates a pet in the store with form data",
         tags = { "pet" },
         responses = {
@@ -346,6 +356,7 @@ public interface PetApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "uploadFile",
         summary = "uploads an image",
         tags = { "pet" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java
index 756596c05ac..fbc6b4fa89c 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java
@@ -28,7 +28,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "store", description = "the store API")
 public interface StoreApi {
@@ -46,6 +48,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "deleteOrder",
         summary = "Delete purchase order by ID",
         tags = { "store" },
         responses = {
@@ -72,6 +75,7 @@ public interface StoreApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "getInventory",
         summary = "Returns pet inventories by status",
         tags = { "store" },
         responses = {
@@ -104,6 +108,7 @@ public interface StoreApi {
      *         or Order not found (status code 404)
      */
     @Operation(
+        operationId = "getOrderById",
         summary = "Find purchase order by ID",
         tags = { "store" },
         responses = {
@@ -147,6 +152,7 @@ public interface StoreApi {
      *         or Invalid Order (status code 400)
      */
     @Operation(
+        operationId = "placeOrder",
         summary = "Place an order for a pet",
         tags = { "store" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java
index c3a1c9db6bb..17444f774be 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java
@@ -29,7 +29,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Tag(name = "user", description = "the user API")
 public interface UserApi {
@@ -46,6 +48,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUser",
         summary = "Create user",
         tags = { "user" },
         responses = {
@@ -75,6 +78,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithArrayInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -104,6 +108,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "createUsersWithListInput",
         summary = "Creates list of users with given input array",
         tags = { "user" },
         responses = {
@@ -135,6 +140,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "deleteUser",
         summary = "Delete user",
         tags = { "user" },
         responses = {
@@ -166,6 +172,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "getUserByName",
         summary = "Get user by user name",
         tags = { "user" },
         responses = {
@@ -210,6 +217,7 @@ public interface UserApi {
      *         or Invalid username/password supplied (status code 400)
      */
     @Operation(
+        operationId = "loginUser",
         summary = "Logs user into the system",
         tags = { "user" },
         responses = {
@@ -237,6 +245,7 @@ public interface UserApi {
      * @return successful operation (status code 200)
      */
     @Operation(
+        operationId = "logoutUser",
         summary = "Logs out current logged in user session",
         tags = { "user" },
         responses = {
@@ -268,6 +277,7 @@ public interface UserApi {
      *         or User not found (status code 404)
      */
     @Operation(
+        operationId = "updateUser",
         summary = "Updated user",
         tags = { "user" },
         responses = {
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/configuration/HomeController.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/configuration/HomeController.java
index 34bae16b898..61d4ebb3183 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,8 +1,8 @@
 package org.openapitools.configuration;
 
+import org.springframework.context.annotation.Bean;
 import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
 import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
 import org.springframework.util.StreamUtils;
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java
index 463de0ed39a..823adb2ae4d 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A category for a pet
  */
-@Schema(name = "Category",description = "A category for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Category", description = "A category for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-@Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
+  @Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java
index 0ef610e38f0..ea4f1e40264 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Describes the result of uploading an image resource
  */
-@Schema(name = "ApiResponse",description = "Describes the result of uploading an image resource")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
-  @Schema(name = "code", defaultValue = "")
-
-
+  
+  @Schema(name = "code", required = false)
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
-  @Schema(name = "type", defaultValue = "")
-
-
+  
+  @Schema(name = "type", required = false)
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
-  @Schema(name = "message", defaultValue = "")
-
-
+  
+  @Schema(name = "message", required = false)
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java
index 528598b79ea..e624a0d7c1f 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -14,13 +15,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * An order for a pets from the pet store
  */
-@Schema(name = "Order",description = "An order for a pets from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
-  @Schema(name = "petId", defaultValue = "")
-
-
+  
+  @Schema(name = "petId", required = false)
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
-  @Schema(name = "quantity", defaultValue = "")
-
-
+  
+  @Schema(name = "quantity", required = false)
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
-  @Schema(name = "shipDate", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "shipDate", required = false)
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
-  @Schema(name = "status", defaultValue = "Order Status")
-
-
+  
+  @Schema(name = "status", description = "Order Status", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
-  @Schema(name = "complete", defaultValue = "")
-
-
+  
+  @Schema(name = "complete", required = false)
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java
index 7c2986fea84..ddff66759ba 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java
@@ -17,13 +17,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A pet for sale in the pet store
  */
-@Schema(name = "Pet",description = "A pet for sale in the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
-  @Schema(name = "category", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "category", required = false)
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", example = "doggie", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
-  @Schema(name = "photoUrls", required = true, defaultValue = "")
-  @NotNull
-
-
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
-  @Schema(name = "tags", defaultValue = "")
-
-  @Valid
-
+  @Valid 
+  @Schema(name = "tags", required = false)
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
-  @Schema(name = "status", defaultValue = "pet status in the store")
-
-
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java
index 27166f687a2..5c3ac82ba6e 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A tag for a pet
  */
-@Schema(name = "Tag",description = "A tag for a pet")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
-  @Schema(name = "name", defaultValue = "")
-
-
+  
+  @Schema(name = "name", required = false)
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/User.java b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/User.java
index ba24f681c1d..328569672eb 100644
--- a/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/User.java
+++ b/samples/openapi3/server/petstore/springboot/src/main/java/org/openapitools/model/User.java
@@ -12,13 +12,16 @@ import io.swagger.v3.oas.annotations.media.Schema;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * A User who is purchasing from the pet store
  */
-@Schema(name = "User",description = "A User who is purchasing from the pet store")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
-  @Schema(name = "id", defaultValue = "")
-
-
+  
+  @Schema(name = "id", required = false)
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
-  @Schema(name = "username", defaultValue = "")
-
-
+  
+  @Schema(name = "username", required = false)
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
-  @Schema(name = "firstName", defaultValue = "")
-
-
+  
+  @Schema(name = "firstName", required = false)
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
-  @Schema(name = "lastName", defaultValue = "")
-
-
+  
+  @Schema(name = "lastName", required = false)
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
-  @Schema(name = "email", defaultValue = "")
-
-
+  
+  @Schema(name = "email", required = false)
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
-  @Schema(name = "password", defaultValue = "")
-
-
+  
+  @Schema(name = "password", required = false)
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
-  @Schema(name = "phone", defaultValue = "")
-
-
+  
+  @Schema(name = "phone", required = false)
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
-  @Schema(name = "userStatus", defaultValue = "User Status")
-
-
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/cpp-qt-qhttpengine-server/server/src/handlers/OAIApiRouter.h b/samples/server/petstore/cpp-qt-qhttpengine-server/server/src/handlers/OAIApiRouter.h
index 5b8133a7b76..22854f6ccfd 100644
--- a/samples/server/petstore/cpp-qt-qhttpengine-server/server/src/handlers/OAIApiRouter.h
+++ b/samples/server/petstore/cpp-qt-qhttpengine-server/server/src/handlers/OAIApiRouter.h
@@ -46,7 +46,7 @@ protected:
         if (socket->bytesAvailable() >= socket->contentLength()) {
             emit requestReceived(socket);
         } else {
-            connect(socket, &Socket::readChannelFinished, [this, socket, m]() {
+            connect(socket, &QHttpEngine::Socket::readChannelFinished, [this, socket]() {
                 emit requestReceived(socket);
             });
         }
@@ -105,7 +105,7 @@ private :
     }
 
     inline QRegularExpressionMatch getRequestMatch(QString serverTemplatePath, QString requestPath){
-        QRegularExpression parExpr( R"(\{([^\/\\s]+)\})" );
+        QRegularExpression parExpr( R"(\{([^\/\s]+)\})" );
         serverTemplatePath.replace( parExpr, R"((?<\1>[^\/\s]+))" );
         serverTemplatePath.append("[\\/]?$");
         QRegularExpression pathExpr( serverTemplatePath );
@@ -117,4 +117,4 @@ private :
 
 }
 
-#endif // OAI_APIROUTER_H
\ No newline at end of file
+#endif // OAI_APIROUTER_H
diff --git a/samples/server/petstore/java-camel/.openapi-generator-ignore b/samples/server/petstore/java-camel/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/server/petstore/java-camel/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/server/petstore/java-camel/.openapi-generator/FILES b/samples/server/petstore/java-camel/.openapi-generator/FILES
new file mode 100644
index 00000000000..4c9d78d30eb
--- /dev/null
+++ b/samples/server/petstore/java-camel/.openapi-generator/FILES
@@ -0,0 +1,22 @@
+README.md
+pom.xml
+src/main/java/org/openapitools/OpenAPI2SpringBoot.java
+src/main/java/org/openapitools/RFC3339DateFormat.java
+src/main/java/org/openapitools/RestConfiguration.java
+src/main/java/org/openapitools/ValidationErrorProcessor.java
+src/main/java/org/openapitools/api/PetApi.java
+src/main/java/org/openapitools/api/PetApiRoutesImpl.java
+src/main/java/org/openapitools/api/PetApiValidator.java
+src/main/java/org/openapitools/api/StoreApi.java
+src/main/java/org/openapitools/api/StoreApiRoutesImpl.java
+src/main/java/org/openapitools/api/StoreApiValidator.java
+src/main/java/org/openapitools/api/UserApi.java
+src/main/java/org/openapitools/api/UserApiRoutesImpl.java
+src/main/java/org/openapitools/api/UserApiValidator.java
+src/main/java/org/openapitools/model/Category.java
+src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/Order.java
+src/main/java/org/openapitools/model/Pet.java
+src/main/java/org/openapitools/model/Tag.java
+src/main/java/org/openapitools/model/User.java
+src/main/resources/application.properties
diff --git a/samples/server/petstore/java-camel/.openapi-generator/VERSION b/samples/server/petstore/java-camel/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/server/petstore/java-camel/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/README.md b/samples/server/petstore/java-camel/README.md
new file mode 100644
index 00000000000..e20452e8492
--- /dev/null
+++ b/samples/server/petstore/java-camel/README.md
@@ -0,0 +1,7 @@
+# OpenAPI generated server
+
+Apache Camel Server
+
+```bash
+mvn clean test
+```
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/pom.xml b/samples/server/petstore/java-camel/pom.xml
new file mode 100644
index 00000000000..8723287db73
--- /dev/null
+++ b/samples/server/petstore/java-camel/pom.xml
@@ -0,0 +1,185 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!--
+NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+https://openapi-generator.tech
+Do not edit the class manually.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.openapitools</groupId>
+    <artifactId>openapi-camel</artifactId>
+    <packaging>jar</packaging>
+    <name>openapi-camel</name>
+    <version>1.0.0</version>
+
+    <scm>
+        <connection>scm:git:git@github.com:openapitools/openapi-generator.git</connection>
+        <developerConnection>scm:git:git@github.com:openapitools/openapi-generator.git</developerConnection>
+        <url>https://github.com/openapitools/openapi-generator</url>
+    </scm>
+
+    <licenses>
+        <license>
+            <name>Unlicense</name>
+            <url>https://www.apache.org/licenses/LICENSE-2.0.html</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <developers>
+        <developer>
+            <name>OpenAPI-Generator Contributors</name>
+            <email>team@openapitools.org</email>
+            <organization>OpenAPITools.org</organization>
+            <organizationUrl>http://openapitools.org</organizationUrl>
+        </developer>
+    </developers>
+
+    <properties>
+        <org.springframework.boot.version>2.6.2</org.springframework.boot.version>
+        <org.apache.camel.version>3.14.0</org.apache.camel.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.camel</groupId>
+                <artifactId>camel-bom</artifactId>
+                <version>${org.apache.camel.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.camel.springboot</groupId>
+                <artifactId>camel-spring-boot-bom</artifactId>
+                <version>${org.apache.camel.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${org.springframework.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>2.22.2</version>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.camel.springboot</groupId>
+            <artifactId>camel-spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.camel.springboot</groupId>
+            <artifactId>camel-servlet-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.openapitools</groupId>
+            <artifactId>jackson-databind-nullable</artifactId>
+            <version>0.2.1</version>
+        </dependency>
+        <dependency>
+            <groupId>io.swagger</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>1.6.3</version>
+        </dependency>
+        <dependency>
+            <groupId>io.swagger.core.v3</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>2.1.11</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jsr310</artifactId>
+            <version>2.13.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-jdk8</artifactId>
+            <version>2.13.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-jackson</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-jacksonxml</artifactId>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-jaxb</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-direct</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-bean-validator</artifactId>
+        </dependency>
+
+        <!-- Test dependencies -->
+        <dependency>
+            <groupId>com.mashape.unirest</groupId>
+            <artifactId>unirest-java</artifactId>
+            <version>1.4.9</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-test-spring-junit5</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/OpenAPI2SpringBoot.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
new file mode 100644
index 00000000000..7caef40973e
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
@@ -0,0 +1,64 @@
+package org.openapitools;
+
+import com.fasterxml.jackson.databind.Module;
+import org.openapitools.jackson.nullable.JsonNullableModule;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.ExitCodeGenerator;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
+
+@SpringBootApplication
+@ComponentScan(basePackages = {"org.openapitools", "org.openapitools.api" , "org.openapitools.configuration"})
+public class OpenAPI2SpringBoot implements CommandLineRunner {
+
+    @Override
+    public void run(String... arg0) throws Exception {
+        if (arg0.length > 0 && arg0[0].equals("exitcode")) {
+            throw new ExitException();
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        new SpringApplication(OpenAPI2SpringBoot.class).run(args);
+    }
+
+    static class ExitException extends RuntimeException implements ExitCodeGenerator {
+        private static final long serialVersionUID = 1L;
+
+        @Override
+        public int getExitCode() {
+            return 10;
+        }
+
+    }
+
+    @Bean
+    public WebMvcConfigurer webConfigurer() {
+        return new WebMvcConfigurerAdapter() {
+            /*@Override
+            public void addCorsMappings(CorsRegistry registry) {
+                registry.addMapping("/**")
+                        .allowedOrigins("*")
+                        .allowedMethods("*")
+                        .allowedHeaders("Content-Type");
+            }*/
+
+            @Override
+            public void addResourceHandlers(ResourceHandlerRegistry registry) {
+                registry.addResourceHandler("/swagger-ui/**").addResourceLocations("classpath:/META-INF/resources/webjars/swagger-ui/3.14.2/");
+            }
+        };
+    }
+
+    @Bean
+    public Module jsonNullableModule() {
+        return new JsonNullableModule();
+    }
+
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/RFC3339DateFormat.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/RFC3339DateFormat.java
new file mode 100644
index 00000000000..bcd3936d8b3
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/RFC3339DateFormat.java
@@ -0,0 +1,38 @@
+package org.openapitools;
+
+import com.fasterxml.jackson.databind.util.StdDateFormat;
+
+import java.text.DateFormat;
+import java.text.FieldPosition;
+import java.text.ParsePosition;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.TimeZone;
+
+public class RFC3339DateFormat extends DateFormat {
+  private static final long serialVersionUID = 1L;
+  private static final TimeZone TIMEZONE_Z = TimeZone.getTimeZone("UTC");
+
+  private final StdDateFormat fmt = new StdDateFormat()
+          .withTimeZone(TIMEZONE_Z)
+          .withColonInTimeZone(true);
+
+  public RFC3339DateFormat() {
+    this.calendar = new GregorianCalendar();
+  }
+
+  @Override
+  public Date parse(String source, ParsePosition pos) {
+    return fmt.parse(source, pos);
+  }
+
+  @Override
+  public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
+    return fmt.format(date, toAppendTo, fieldPosition);
+  }
+
+  @Override
+  public Object clone() {
+    return this;
+  }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/RestConfiguration.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/RestConfiguration.java
new file mode 100644
index 00000000000..471083b8a87
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/RestConfiguration.java
@@ -0,0 +1,22 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.model.rest.RestBindingMode;
+
+@Component
+public class RestConfiguration extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        restConfiguration()
+            .component("servlet")
+            .bindingMode(RestBindingMode.auto)
+                .dataFormatProperty("json.out.disableFeatures", "WRITE_DATES_AS_TIMESTAMPS")
+            .clientRequestValidation(true);
+    }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/ValidationErrorProcessor.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/ValidationErrorProcessor.java
new file mode 100644
index 00000000000..c52e0c6b35e
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/ValidationErrorProcessor.java
@@ -0,0 +1,30 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools;
+
+import org.apache.camel.Exchange;
+import org.apache.camel.Processor;
+import org.apache.camel.component.bean.validator.BeanValidationException;
+import org.springframework.stereotype.Component;
+import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;
+
+@Component("validationErrorProcessor")
+public class ValidationErrorProcessor implements Processor {
+
+    @Override
+    public void process(Exchange exchange) throws Exception {
+        Exception fault = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Exception.class);
+        int httpStatusCode = 500;
+        if (fault instanceof BeanValidationException) {
+            httpStatusCode = 400;
+        }
+        if (fault instanceof UnrecognizedPropertyException) {
+            httpStatusCode = 400;
+        }
+        exchange.getIn().setHeader(Exchange.HTTP_RESPONSE_CODE, httpStatusCode);
+        exchange.getIn().setBody(fault.getMessage());
+    }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApi.java
new file mode 100644
index 00000000000..01d6d65f336
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApi.java
@@ -0,0 +1,268 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.model.rest.RestParamType;
+import org.springframework.stereotype.Component;
+import org.openapitools.model.*;
+import org.apache.camel.model.rest.RestBindingMode;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class PetApi extends RouteBuilder {
+
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("validationErrorProcessor");
+        
+
+        /**
+        POST /pet : Add a new pet to the store
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("write:pets","modify pets in your account")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .post("/pet")
+                .description("Add a new pet to the store")
+                .id("addPetApi")
+                .produces("application/xml, application/json")
+                .outType(Pet.class)
+                .consumes("application/json, application/xml")
+                .type(Pet.class)
+                
+                .param()
+                    .name("pet")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("Pet object that needs to be added to the store")
+                .endParam()
+                .to("direct:validate-addPet");
+        
+
+        /**
+        DELETE /pet/{petId} : Deletes a pet
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("write:pets","modify pets in your account")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .delete("/pet/{petId}")
+                .description("Deletes a pet")
+                .id("deletePetApi")
+                .param()
+                    .name("petId")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("Pet id to delete")
+                .endParam()
+                .param()
+                    .name("apiKey")
+                    .type(RestParamType.header)
+                    .required(false)
+                .endParam()
+                .to("direct:validate-deletePet");
+        
+
+        /**
+        GET /pet/findByStatus : Finds Pets by status
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .get("/pet/findByStatus")
+                .description("Finds Pets by status")
+                .id("findPetsByStatusApi")
+                .produces("application/xml, application/json")
+                .outType(Pet[].class)
+                .param()
+                    .name("status")
+                    .type(RestParamType.query)
+                    .required(true)
+                    .description("Status values that need to be considered for filter")
+                .endParam()
+                .to("direct:validate-findPetsByStatus");
+        
+
+        /**
+        GET /pet/findByTags : Finds Pets by tags
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .get("/pet/findByTags")
+                .description("Finds Pets by tags")
+                .id("findPetsByTagsApi")
+                .produces("application/xml, application/json")
+                .outType(Pet[].class)
+                .param()
+                    .name("tags")
+                    .type(RestParamType.query)
+                    .required(true)
+                    .description("Tags to filter by")
+                .endParam()
+                .to("direct:validate-findPetsByTags");
+        
+
+        /**
+        GET /pet/{petId} : Find pet by ID
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .get("/pet/{petId}")
+                .description("Find pet by ID")
+                .id("getPetByIdApi")
+                .produces("application/xml, application/json")
+                .outType(Pet.class)
+                .param()
+                    .name("petId")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("ID of pet to return")
+                .endParam()
+                .to("direct:validate-getPetById");
+        
+
+        /**
+        PUT /pet : Update an existing pet
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("write:pets","modify pets in your account")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .put("/pet")
+                .description("Update an existing pet")
+                .id("updatePetApi")
+                .produces("application/xml, application/json")
+                .outType(Pet.class)
+                .consumes("application/json, application/xml")
+                .type(Pet.class)
+                
+                .param()
+                    .name("pet")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("Pet object that needs to be added to the store")
+                .endParam()
+                .to("direct:validate-updatePet");
+        
+
+        /**
+        POST /pet/{petId} : Updates a pet in the store with form data
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("write:pets","modify pets in your account")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .post("/pet/{petId}")
+                .description("Updates a pet in the store with form data")
+                .id("updatePetWithFormApi")
+                .clientRequestValidation(false)
+                .bindingMode(RestBindingMode.off)
+                .consumes("application/x-www-form-urlencoded")
+                
+                .param()
+                    .name("petId")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("ID of pet that needs to be updated")
+                .endParam()
+                .param()
+                    .name("name")
+                    .type(RestParamType.formData)
+                    .required(false)
+                    .description("Updated name of the pet")
+                .endParam()
+                .param()
+                    .name("status")
+                    .type(RestParamType.formData)
+                    .required(false)
+                    .description("Updated status of the pet")
+                .endParam()
+                .to("direct:validate-updatePetWithForm");
+        
+
+        /**
+        POST /pet/{petId}/uploadImage : uploads an image
+        **/
+        rest()
+            .securityDefinitions()
+                .oauth2("petstore_auth")
+                    .flow("implicit")
+                    .authorizationUrl("http://petstore.swagger.io/api/oauth/dialog")
+                        .withScope("write:pets","modify pets in your account")
+                        .withScope("read:pets","read your pets")
+                
+            .endSecurityDefinition()
+            .post("/pet/{petId}/uploadImage")
+                .description("uploads an image")
+                .id("uploadFileApi")
+                .clientRequestValidation(false)
+                .bindingMode(RestBindingMode.off)
+                .produces("application/json")
+                .outType(ModelApiResponse.class)
+                .consumes("multipart/form-data")
+                
+                .param()
+                    .name("petId")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("ID of pet to update")
+                .endParam()
+                .param()
+                    .name("additionalMetadata")
+                    .type(RestParamType.formData)
+                    .required(false)
+                    .description("Additional data to pass to server")
+                .endParam()
+                .param()
+                    .name("file")
+                    .type(RestParamType.formData)
+                    .required(false)
+                    .description("file to upload")
+                .endParam()
+                .to("direct:validate-uploadFile");
+        
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApiRoutesImpl.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApiRoutesImpl.java
new file mode 100644
index 00000000000..9ae2ee59d7c
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApiRoutesImpl.java
@@ -0,0 +1,112 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+import org.openapitools.model.*;
+import org.apache.camel.model.dataformat.JsonLibrary;
+
+@Component
+public class PetApiRoutesImpl extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        
+        /**
+        POST /pet : Add a new pet to the store
+        **/
+        from("direct:addPet")
+            .id("addPet")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, Pet.class);
+        /**
+        DELETE /pet/{petId} : Deletes a pet
+        **/
+        from("direct:deletePet")
+            .id("deletePet")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        GET /pet/findByStatus : Finds Pets by status
+        **/
+        from("direct:findPetsByStatus")
+            .id("findPetsByStatus")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("[{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }]"))
+            .unmarshal().json(JsonLibrary.Jackson, Pet[].class);
+        /**
+        GET /pet/findByTags : Finds Pets by tags
+        **/
+        from("direct:findPetsByTags")
+            .id("findPetsByTags")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("[{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }]"))
+            .unmarshal().json(JsonLibrary.Jackson, Pet[].class);
+        /**
+        GET /pet/{petId} : Find pet by ID
+        **/
+        from("direct:getPetById")
+            .id("getPetById")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, Pet.class);
+        /**
+        PUT /pet : Update an existing pet
+        **/
+        from("direct:updatePet")
+            .id("updatePet")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, Pet.class);
+        /**
+        POST /pet/{petId} : Updates a pet in the store with form data
+        **/
+        from("direct:updatePetWithForm")
+            .id("updatePetWithForm")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        POST /pet/{petId}/uploadImage : uploads an image
+        **/
+        from("direct:uploadFile")
+            .id("uploadFile")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"code\" : 0, \"type\" : \"type\", \"message\" : \"message\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, ModelApiResponse.class);
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApiValidator.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApiValidator.java
new file mode 100644
index 00000000000..37c26f0f43d
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/PetApiValidator.java
@@ -0,0 +1,64 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class PetApiValidator extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("validationErrorProcessor");
+        
+        from("direct:validate-addPet")
+            .id("validate-addPet")
+            .to("bean-validator://validate-request")
+            .to("direct:addPet")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-deletePet")
+            .id("validate-deletePet")
+            .to("direct:deletePet");
+        
+        from("direct:validate-findPetsByStatus")
+            .id("validate-findPetsByStatus")
+            .to("direct:findPetsByStatus")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-findPetsByTags")
+            .id("validate-findPetsByTags")
+            .to("direct:findPetsByTags")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-getPetById")
+            .id("validate-getPetById")
+            .to("direct:getPetById")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-updatePet")
+            .id("validate-updatePet")
+            .to("bean-validator://validate-request")
+            .to("direct:updatePet")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-updatePetWithForm")
+            .id("validate-updatePetWithForm")
+            .to("bean-validator://validate-request")
+            .to("direct:updatePetWithForm");
+        
+        from("direct:validate-uploadFile")
+            .id("validate-uploadFile")
+            .to("bean-validator://validate-request")
+            .to("direct:uploadFile")
+            .to("bean-validator://validate-response");
+        
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApi.java
new file mode 100644
index 00000000000..1da7869f832
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApi.java
@@ -0,0 +1,97 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.model.rest.RestParamType;
+import org.springframework.stereotype.Component;
+import org.openapitools.model.*;
+import org.apache.camel.model.rest.RestBindingMode;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class StoreApi extends RouteBuilder {
+
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("validationErrorProcessor");
+        
+
+        /**
+        DELETE /store/order/{orderId} : Delete purchase order by ID
+        **/
+        rest()
+            .delete("/store/order/{orderId}")
+                .description("Delete purchase order by ID")
+                .id("deleteOrderApi")
+                .param()
+                    .name("orderId")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("ID of the order that needs to be deleted")
+                .endParam()
+                .to("direct:validate-deleteOrder");
+        
+
+        /**
+        GET /store/inventory : Returns pet inventories by status
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .get("/store/inventory")
+                .description("Returns pet inventories by status")
+                .id("getInventoryApi")
+                .produces("application/json")
+                .to("direct:validate-getInventory");
+        
+
+        /**
+        GET /store/order/{orderId} : Find purchase order by ID
+        **/
+        rest()
+            .get("/store/order/{orderId}")
+                .description("Find purchase order by ID")
+                .id("getOrderByIdApi")
+                .produces("application/xml, application/json")
+                .outType(Order.class)
+                .param()
+                    .name("orderId")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("ID of pet that needs to be fetched")
+                .endParam()
+                .to("direct:validate-getOrderById");
+        
+
+        /**
+        POST /store/order : Place an order for a pet
+        **/
+        rest()
+            .post("/store/order")
+                .description("Place an order for a pet")
+                .id("placeOrderApi")
+                .produces("application/xml, application/json")
+                .outType(Order.class)
+                .consumes("application/json")
+                .type(Order.class)
+                
+                .param()
+                    .name("order")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("order placed for purchasing the pet")
+                .endParam()
+                .to("direct:validate-placeOrder");
+        
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApiRoutesImpl.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApiRoutesImpl.java
new file mode 100644
index 00000000000..6e6dd8fb705
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApiRoutesImpl.java
@@ -0,0 +1,64 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+import org.openapitools.model.*;
+import org.apache.camel.model.dataformat.JsonLibrary;
+
+@Component
+public class StoreApiRoutesImpl extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        
+        /**
+        DELETE /store/order/{orderId} : Delete purchase order by ID
+        **/
+        from("direct:deleteOrder")
+            .id("deleteOrder")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        GET /store/inventory : Returns pet inventories by status
+        **/
+        from("direct:getInventory")
+            .id("getInventory")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        GET /store/order/{orderId} : Find purchase order by ID
+        **/
+        from("direct:getOrderById")
+            .id("getOrderById")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, Order.class);
+        /**
+        POST /store/order : Place an order for a pet
+        **/
+        from("direct:placeOrder")
+            .id("placeOrder")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, Order.class);
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApiValidator.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApiValidator.java
new file mode 100644
index 00000000000..b18e0212257
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/StoreApiValidator.java
@@ -0,0 +1,42 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class StoreApiValidator extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("validationErrorProcessor");
+        
+        from("direct:validate-deleteOrder")
+            .id("validate-deleteOrder")
+            .to("direct:deleteOrder");
+        
+        from("direct:validate-getInventory")
+            .id("validate-getInventory")
+            .to("direct:getInventory")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-getOrderById")
+            .id("validate-getOrderById")
+            .to("direct:getOrderById")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-placeOrder")
+            .id("validate-placeOrder")
+            .to("bean-validator://validate-request")
+            .to("direct:placeOrder")
+            .to("bean-validator://validate-response");
+        
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApi.java
new file mode 100644
index 00000000000..77713cee726
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApi.java
@@ -0,0 +1,206 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.apache.camel.model.rest.RestParamType;
+import org.springframework.stereotype.Component;
+import org.openapitools.model.*;
+import org.apache.camel.model.rest.RestBindingMode;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class UserApi extends RouteBuilder {
+
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("validationErrorProcessor");
+        
+
+        /**
+        POST /user : Create user
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .post("/user")
+                .description("Create user")
+                .id("createUserApi")
+                .consumes("application/json")
+                .type(User.class)
+                
+                .param()
+                    .name("user")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("Created user object")
+                .endParam()
+                .to("direct:validate-createUser");
+        
+
+        /**
+        POST /user/createWithArray : Creates list of users with given input array
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .post("/user/createWithArray")
+                .description("Creates list of users with given input array")
+                .id("createUsersWithArrayInputApi")
+                .consumes("application/json")
+                .type(User[].class)
+                
+                .param()
+                    .name("user")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("List of user object")
+                .endParam()
+                .to("direct:validate-createUsersWithArrayInput");
+        
+
+        /**
+        POST /user/createWithList : Creates list of users with given input array
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .post("/user/createWithList")
+                .description("Creates list of users with given input array")
+                .id("createUsersWithListInputApi")
+                .consumes("application/json")
+                .type(User[].class)
+                
+                .param()
+                    .name("user")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("List of user object")
+                .endParam()
+                .to("direct:validate-createUsersWithListInput");
+        
+
+        /**
+        DELETE /user/{username} : Delete user
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .delete("/user/{username}")
+                .description("Delete user")
+                .id("deleteUserApi")
+                .param()
+                    .name("username")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("The name that needs to be deleted")
+                .endParam()
+                .to("direct:validate-deleteUser");
+        
+
+        /**
+        GET /user/{username} : Get user by user name
+        **/
+        rest()
+            .get("/user/{username}")
+                .description("Get user by user name")
+                .id("getUserByNameApi")
+                .produces("application/xml, application/json")
+                .outType(User.class)
+                .param()
+                    .name("username")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("The name that needs to be fetched. Use user1 for testing.")
+                .endParam()
+                .to("direct:validate-getUserByName");
+        
+
+        /**
+        GET /user/login : Logs user into the system
+        **/
+        rest()
+            .get("/user/login")
+                .description("Logs user into the system")
+                .id("loginUserApi")
+                .produces("application/xml, application/json")
+                .outType(String.class)
+                .param()
+                    .name("username")
+                    .type(RestParamType.query)
+                    .required(true)
+                    .description("The user name for login")
+                .endParam()
+                .param()
+                    .name("password")
+                    .type(RestParamType.query)
+                    .required(true)
+                    .description("The password for login in clear text")
+                .endParam()
+                .to("direct:validate-loginUser");
+        
+
+        /**
+        GET /user/logout : Logs out current logged in user session
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .get("/user/logout")
+                .description("Logs out current logged in user session")
+                .id("logoutUserApi")
+                .to("direct:validate-logoutUser");
+        
+
+        /**
+        PUT /user/{username} : Updated user
+        **/
+        rest()
+            .securityDefinitions()
+                .apiKey("api_key")
+                    .withHeader("api_key")
+                
+            .endSecurityDefinition()
+            .put("/user/{username}")
+                .description("Updated user")
+                .id("updateUserApi")
+                .consumes("application/json")
+                .type(User.class)
+                
+                .param()
+                    .name("username")
+                    .type(RestParamType.path)
+                    .required(true)
+                    .description("name that need to be deleted")
+                .endParam()
+                .param()
+                    .name("user")
+                    .type(RestParamType.body)
+                    .required(true)
+                    .description("Updated user object")
+                .endParam()
+                .to("direct:validate-updateUser");
+        
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApiRoutesImpl.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApiRoutesImpl.java
new file mode 100644
index 00000000000..f7849908678
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApiRoutesImpl.java
@@ -0,0 +1,102 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+import org.openapitools.model.*;
+import org.apache.camel.model.dataformat.JsonLibrary;
+
+@Component
+public class UserApiRoutesImpl extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        
+        /**
+        POST /user : Create user
+        **/
+        from("direct:createUser")
+            .id("createUser")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        POST /user/createWithArray : Creates list of users with given input array
+        **/
+        from("direct:createUsersWithArrayInput")
+            .id("createUsersWithArrayInput")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        POST /user/createWithList : Creates list of users with given input array
+        **/
+        from("direct:createUsersWithListInput")
+            .id("createUsersWithListInput")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        DELETE /user/{username} : Delete user
+        **/
+        from("direct:deleteUser")
+            .id("deleteUser")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        GET /user/{username} : Get user by user name
+        **/
+        from("direct:getUserByName")
+            .id("getUserByName")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}")
+            .setBody(constant("{ \"firstName\" : \"firstName\", \"lastName\" : \"lastName\", \"password\" : \"password\", \"userStatus\" : 6, \"phone\" : \"phone\", \"id\" : 0, \"email\" : \"email\", \"username\" : \"username\" }"))
+            .unmarshal().json(JsonLibrary.Jackson, User.class);
+        /**
+        GET /user/login : Logs user into the system
+        **/
+        from("direct:loginUser")
+            .id("loginUser")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        GET /user/logout : Logs out current logged in user session
+        **/
+        from("direct:logoutUser")
+            .id("logoutUser")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+        /**
+        PUT /user/{username} : Updated user
+        **/
+        from("direct:updateUser")
+            .id("updateUser")
+            .choice()
+                .when(simple("${body} != null"))
+                    .log(LoggingLevel.INFO, "BODY TYPE: ${body.getClass().getName()}")
+            .end()
+            .log(LoggingLevel.INFO, "HEADERS: ${headers}");
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApiValidator.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApiValidator.java
new file mode 100644
index 00000000000..c6ceebfe8c0
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/api/UserApiValidator.java
@@ -0,0 +1,60 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.apache.camel.builder.RouteBuilder;
+import org.springframework.stereotype.Component;
+import org.apache.camel.LoggingLevel;
+
+@Component
+public class UserApiValidator extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        onException(Exception.class)
+            .log(LoggingLevel.ERROR, "${exception.message}: ${exception.stacktrace}")
+            .handled(true)
+            .process("validationErrorProcessor");
+        
+        from("direct:validate-createUser")
+            .id("validate-createUser")
+            .to("bean-validator://validate-request")
+            .to("direct:createUser");
+        
+        from("direct:validate-createUsersWithArrayInput")
+            .id("validate-createUsersWithArrayInput")
+            .to("bean-validator://validate-request")
+            .to("direct:createUsersWithArrayInput");
+        
+        from("direct:validate-createUsersWithListInput")
+            .id("validate-createUsersWithListInput")
+            .to("bean-validator://validate-request")
+            .to("direct:createUsersWithListInput");
+        
+        from("direct:validate-deleteUser")
+            .id("validate-deleteUser")
+            .to("direct:deleteUser");
+        
+        from("direct:validate-getUserByName")
+            .id("validate-getUserByName")
+            .to("direct:getUserByName")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-loginUser")
+            .id("validate-loginUser")
+            .to("direct:loginUser")
+            .to("bean-validator://validate-response");
+        
+        from("direct:validate-logoutUser")
+            .id("validate-logoutUser")
+            .to("direct:logoutUser");
+        
+        from("direct:validate-updateUser")
+            .id("validate-updateUser")
+            .to("bean-validator://validate-request")
+            .to("direct:updateUser");
+        
+    }
+}
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Category.java
new file mode 100644
index 00000000000..e8a00e182c5
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Category.java
@@ -0,0 +1,118 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import org.hibernate.validator.constraints.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.xml.bind.annotation.*;
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A category for a pet
+ */
+
+@Schema(name = "Category", description = "A category for a pet")
+@JacksonXmlRootElement(localName = "Category")
+@XmlRootElement(name = "Category")
+@XmlAccessorType(XmlAccessType.FIELD)
+
+@Generated(value = "org.openapitools.codegen.languages.JavaCamelServerCodegen")
+public class Category   {
+
+  @JsonProperty("id")
+  @JacksonXmlProperty(localName = "id")
+  private Long id;
+
+  @JsonProperty("name")
+  @JacksonXmlProperty(localName = "name")
+  private String name;
+
+  public Category id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Category name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  @Pattern(regexp = "^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") 
+  @Schema(name = "name", required = false)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Category category = (Category) o;
+    return Objects.equals(this.id, category.id) &&
+        Objects.equals(this.name, category.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Category {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/ModelApiResponse.java
new file mode 100644
index 00000000000..9be10750783
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -0,0 +1,143 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import org.hibernate.validator.constraints.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.xml.bind.annotation.*;
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Describes the result of uploading an image resource
+ */
+
+@Schema(name = "ApiResponse", description = "Describes the result of uploading an image resource")
+@JacksonXmlRootElement(localName = "ModelApiResponse")
+@XmlRootElement(name = "ModelApiResponse")
+@XmlAccessorType(XmlAccessType.FIELD)
+
+@Generated(value = "org.openapitools.codegen.languages.JavaCamelServerCodegen")
+public class ModelApiResponse   {
+
+  @JsonProperty("code")
+  @JacksonXmlProperty(localName = "code")
+  private Integer code;
+
+  @JsonProperty("type")
+  @JacksonXmlProperty(localName = "type")
+  private String type;
+
+  @JsonProperty("message")
+  @JacksonXmlProperty(localName = "message")
+  private String message;
+
+  public ModelApiResponse code(Integer code) {
+    this.code = code;
+    return this;
+  }
+
+  /**
+   * Get code
+   * @return code
+  */
+  
+  @Schema(name = "code", required = false)
+  public Integer getCode() {
+    return code;
+  }
+
+  public void setCode(Integer code) {
+    this.code = code;
+  }
+
+  public ModelApiResponse type(String type) {
+    this.type = type;
+    return this;
+  }
+
+  /**
+   * Get type
+   * @return type
+  */
+  
+  @Schema(name = "type", required = false)
+  public String getType() {
+    return type;
+  }
+
+  public void setType(String type) {
+    this.type = type;
+  }
+
+  public ModelApiResponse message(String message) {
+    this.message = message;
+    return this;
+  }
+
+  /**
+   * Get message
+   * @return message
+  */
+  
+  @Schema(name = "message", required = false)
+  public String getMessage() {
+    return message;
+  }
+
+  public void setMessage(String message) {
+    this.message = message;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelApiResponse _apiResponse = (ModelApiResponse) o;
+    return Objects.equals(this.code, _apiResponse.code) &&
+        Objects.equals(this.type, _apiResponse.type) &&
+        Objects.equals(this.message, _apiResponse.message);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(code, type, message);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelApiResponse {\n");
+    sb.append("    code: ").append(toIndentedString(code)).append("\n");
+    sb.append("    type: ").append(toIndentedString(type)).append("\n");
+    sb.append("    message: ").append(toIndentedString(message)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Order.java
new file mode 100644
index 00000000000..5e8e4d0fc1a
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Order.java
@@ -0,0 +1,259 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.Date;
+import org.springframework.format.annotation.DateTimeFormat;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import org.hibernate.validator.constraints.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.xml.bind.annotation.*;
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * An order for a pets from the pet store
+ */
+
+@Schema(name = "Order", description = "An order for a pets from the pet store")
+@JacksonXmlRootElement(localName = "Order")
+@XmlRootElement(name = "Order")
+@XmlAccessorType(XmlAccessType.FIELD)
+
+@Generated(value = "org.openapitools.codegen.languages.JavaCamelServerCodegen")
+public class Order   {
+
+  @JsonProperty("id")
+  @JacksonXmlProperty(localName = "id")
+  private Long id;
+
+  @JsonProperty("petId")
+  @JacksonXmlProperty(localName = "petId")
+  private Long petId;
+
+  @JsonProperty("quantity")
+  @JacksonXmlProperty(localName = "quantity")
+  private Integer quantity;
+
+  @JsonProperty("shipDate")
+  @JacksonXmlProperty(localName = "shipDate")
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
+  private Date shipDate;
+
+  /**
+   * Order Status
+   */
+  public enum StatusEnum {
+    PLACED("placed"),
+    
+    APPROVED("approved"),
+    
+    DELIVERED("delivered");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  @JsonProperty("status")
+  @JacksonXmlProperty(localName = "status")
+  private StatusEnum status;
+
+  @JsonProperty("complete")
+  @JacksonXmlProperty(localName = "complete")
+  private Boolean complete = false;
+
+  public Order id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Order petId(Long petId) {
+    this.petId = petId;
+    return this;
+  }
+
+  /**
+   * Get petId
+   * @return petId
+  */
+  
+  @Schema(name = "petId", required = false)
+  public Long getPetId() {
+    return petId;
+  }
+
+  public void setPetId(Long petId) {
+    this.petId = petId;
+  }
+
+  public Order quantity(Integer quantity) {
+    this.quantity = quantity;
+    return this;
+  }
+
+  /**
+   * Get quantity
+   * @return quantity
+  */
+  
+  @Schema(name = "quantity", required = false)
+  public Integer getQuantity() {
+    return quantity;
+  }
+
+  public void setQuantity(Integer quantity) {
+    this.quantity = quantity;
+  }
+
+  public Order shipDate(Date shipDate) {
+    this.shipDate = shipDate;
+    return this;
+  }
+
+  /**
+   * Get shipDate
+   * @return shipDate
+  */
+  @Valid 
+  @Schema(name = "shipDate", required = false)
+  public Date getShipDate() {
+    return shipDate;
+  }
+
+  public void setShipDate(Date shipDate) {
+    this.shipDate = shipDate;
+  }
+
+  public Order status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+  /**
+   * Order Status
+   * @return status
+  */
+  
+  @Schema(name = "status", description = "Order Status", required = false)
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  public Order complete(Boolean complete) {
+    this.complete = complete;
+    return this;
+  }
+
+  /**
+   * Get complete
+   * @return complete
+  */
+  
+  @Schema(name = "complete", required = false)
+  public Boolean getComplete() {
+    return complete;
+  }
+
+  public void setComplete(Boolean complete) {
+    this.complete = complete;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Order order = (Order) o;
+    return Objects.equals(this.id, order.id) &&
+        Objects.equals(this.petId, order.petId) &&
+        Objects.equals(this.quantity, order.quantity) &&
+        Objects.equals(this.shipDate, order.shipDate) &&
+        Objects.equals(this.status, order.status) &&
+        Objects.equals(this.complete, order.complete);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, petId, quantity, shipDate, status, complete);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Order {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
+    sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
+    sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("    complete: ").append(toIndentedString(complete)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Pet.java
new file mode 100644
index 00000000000..22b7ba48291
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Pet.java
@@ -0,0 +1,275 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.model.Category;
+import org.openapitools.model.Tag;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import org.hibernate.validator.constraints.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.xml.bind.annotation.*;
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A pet for sale in the pet store
+ */
+
+@Schema(name = "Pet", description = "A pet for sale in the pet store")
+@JacksonXmlRootElement(localName = "Pet")
+@XmlRootElement(name = "Pet")
+@XmlAccessorType(XmlAccessType.FIELD)
+
+@Generated(value = "org.openapitools.codegen.languages.JavaCamelServerCodegen")
+public class Pet   {
+
+  @JsonProperty("id")
+  @JacksonXmlProperty(localName = "id")
+  private Long id;
+
+  @JsonProperty("category")
+  @JacksonXmlProperty(localName = "category")
+  private Category category;
+
+  @JsonProperty("name")
+  @JacksonXmlProperty(localName = "name")
+  private String name;
+
+  @JsonProperty("photoUrls")
+  @JacksonXmlProperty(localName = "photoUrl")
+  @Valid
+  private List<String> photoUrls = new ArrayList<String>();
+
+  @JsonProperty("tags")
+  @JacksonXmlProperty(localName = "tag")
+  @Valid
+  private List<Tag> tags = null;
+
+  /**
+   * pet status in the store
+   */
+  public enum StatusEnum {
+    AVAILABLE("available"),
+    
+    PENDING("pending"),
+    
+    SOLD("sold");
+
+    private String value;
+
+    StatusEnum(String value) {
+      this.value = value;
+    }
+
+    @JsonValue
+    public String getValue() {
+      return value;
+    }
+
+    @Override
+    public String toString() {
+      return String.valueOf(value);
+    }
+
+    @JsonCreator
+    public static StatusEnum fromValue(String value) {
+      for (StatusEnum b : StatusEnum.values()) {
+        if (b.value.equals(value)) {
+          return b;
+        }
+      }
+      throw new IllegalArgumentException("Unexpected value '" + value + "'");
+    }
+  }
+
+  @JsonProperty("status")
+  @JacksonXmlProperty(localName = "status")
+  private StatusEnum status;
+
+  public Pet id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Pet category(Category category) {
+    this.category = category;
+    return this;
+  }
+
+  /**
+   * Get category
+   * @return category
+  */
+  @Valid 
+  @Schema(name = "category", required = false)
+  public Category getCategory() {
+    return category;
+  }
+
+  public void setCategory(Category category) {
+    this.category = category;
+  }
+
+  public Pet name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  @NotNull 
+  @Schema(name = "name", example = "doggie", required = true)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public Pet photoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+    return this;
+  }
+
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+  /**
+   * Get photoUrls
+   * @return photoUrls
+  */
+  @NotNull 
+  @Schema(name = "photoUrls", required = true)
+  public List<String> getPhotoUrls() {
+    return photoUrls;
+  }
+
+  public void setPhotoUrls(List<String> photoUrls) {
+    this.photoUrls = photoUrls;
+  }
+
+  public Pet tags(List<Tag> tags) {
+    this.tags = tags;
+    return this;
+  }
+
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<Tag>();
+    }
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+  /**
+   * Get tags
+   * @return tags
+  */
+  @Valid 
+  @Schema(name = "tags", required = false)
+  public List<Tag> getTags() {
+    return tags;
+  }
+
+  public void setTags(List<Tag> tags) {
+    this.tags = tags;
+  }
+
+  public Pet status(StatusEnum status) {
+    this.status = status;
+    return this;
+  }
+
+  /**
+   * pet status in the store
+   * @return status
+  */
+  
+  @Schema(name = "status", description = "pet status in the store", required = false)
+  public StatusEnum getStatus() {
+    return status;
+  }
+
+  public void setStatus(StatusEnum status) {
+    this.status = status;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Pet pet = (Pet) o;
+    return Objects.equals(this.id, pet.id) &&
+        Objects.equals(this.category, pet.category) &&
+        Objects.equals(this.name, pet.name) &&
+        Objects.equals(this.photoUrls, pet.photoUrls) &&
+        Objects.equals(this.tags, pet.tags) &&
+        Objects.equals(this.status, pet.status);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, category, name, photoUrls, tags, status);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Pet {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    category: ").append(toIndentedString(category)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+    sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+    sb.append("    status: ").append(toIndentedString(status)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Tag.java
new file mode 100644
index 00000000000..a7beefc2415
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/Tag.java
@@ -0,0 +1,118 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import org.hibernate.validator.constraints.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.xml.bind.annotation.*;
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A tag for a pet
+ */
+
+@Schema(name = "Tag", description = "A tag for a pet")
+@JacksonXmlRootElement(localName = "Tag")
+@XmlRootElement(name = "Tag")
+@XmlAccessorType(XmlAccessType.FIELD)
+
+@Generated(value = "org.openapitools.codegen.languages.JavaCamelServerCodegen")
+public class Tag   {
+
+  @JsonProperty("id")
+  @JacksonXmlProperty(localName = "id")
+  private Long id;
+
+  @JsonProperty("name")
+  @JacksonXmlProperty(localName = "name")
+  private String name;
+
+  public Tag id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public Tag name(String name) {
+    this.name = name;
+    return this;
+  }
+
+  /**
+   * Get name
+   * @return name
+  */
+  
+  @Schema(name = "name", required = false)
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    Tag tag = (Tag) o;
+    return Objects.equals(this.id, tag.id) &&
+        Objects.equals(this.name, tag.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, name);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class Tag {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    name: ").append(toIndentedString(name)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/User.java
new file mode 100644
index 00000000000..f8b1176d41b
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/java/org/openapitools/model/User.java
@@ -0,0 +1,268 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import org.hibernate.validator.constraints.*;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+import javax.xml.bind.annotation.*;
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * A User who is purchasing from the pet store
+ */
+
+@Schema(name = "User", description = "A User who is purchasing from the pet store")
+@JacksonXmlRootElement(localName = "User")
+@XmlRootElement(name = "User")
+@XmlAccessorType(XmlAccessType.FIELD)
+
+@Generated(value = "org.openapitools.codegen.languages.JavaCamelServerCodegen")
+public class User   {
+
+  @JsonProperty("id")
+  @JacksonXmlProperty(localName = "id")
+  private Long id;
+
+  @JsonProperty("username")
+  @JacksonXmlProperty(localName = "username")
+  private String username;
+
+  @JsonProperty("firstName")
+  @JacksonXmlProperty(localName = "firstName")
+  private String firstName;
+
+  @JsonProperty("lastName")
+  @JacksonXmlProperty(localName = "lastName")
+  private String lastName;
+
+  @JsonProperty("email")
+  @JacksonXmlProperty(localName = "email")
+  private String email;
+
+  @JsonProperty("password")
+  @JacksonXmlProperty(localName = "password")
+  private String password;
+
+  @JsonProperty("phone")
+  @JacksonXmlProperty(localName = "phone")
+  private String phone;
+
+  @JsonProperty("userStatus")
+  @JacksonXmlProperty(localName = "userStatus")
+  private Integer userStatus;
+
+  public User id(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  /**
+   * Get id
+   * @return id
+  */
+  
+  @Schema(name = "id", required = false)
+  public Long getId() {
+    return id;
+  }
+
+  public void setId(Long id) {
+    this.id = id;
+  }
+
+  public User username(String username) {
+    this.username = username;
+    return this;
+  }
+
+  /**
+   * Get username
+   * @return username
+  */
+  
+  @Schema(name = "username", required = false)
+  public String getUsername() {
+    return username;
+  }
+
+  public void setUsername(String username) {
+    this.username = username;
+  }
+
+  public User firstName(String firstName) {
+    this.firstName = firstName;
+    return this;
+  }
+
+  /**
+   * Get firstName
+   * @return firstName
+  */
+  
+  @Schema(name = "firstName", required = false)
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public void setFirstName(String firstName) {
+    this.firstName = firstName;
+  }
+
+  public User lastName(String lastName) {
+    this.lastName = lastName;
+    return this;
+  }
+
+  /**
+   * Get lastName
+   * @return lastName
+  */
+  
+  @Schema(name = "lastName", required = false)
+  public String getLastName() {
+    return lastName;
+  }
+
+  public void setLastName(String lastName) {
+    this.lastName = lastName;
+  }
+
+  public User email(String email) {
+    this.email = email;
+    return this;
+  }
+
+  /**
+   * Get email
+   * @return email
+  */
+  
+  @Schema(name = "email", required = false)
+  public String getEmail() {
+    return email;
+  }
+
+  public void setEmail(String email) {
+    this.email = email;
+  }
+
+  public User password(String password) {
+    this.password = password;
+    return this;
+  }
+
+  /**
+   * Get password
+   * @return password
+  */
+  
+  @Schema(name = "password", required = false)
+  public String getPassword() {
+    return password;
+  }
+
+  public void setPassword(String password) {
+    this.password = password;
+  }
+
+  public User phone(String phone) {
+    this.phone = phone;
+    return this;
+  }
+
+  /**
+   * Get phone
+   * @return phone
+  */
+  
+  @Schema(name = "phone", required = false)
+  public String getPhone() {
+    return phone;
+  }
+
+  public void setPhone(String phone) {
+    this.phone = phone;
+  }
+
+  public User userStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+    return this;
+  }
+
+  /**
+   * User Status
+   * @return userStatus
+  */
+  
+  @Schema(name = "userStatus", description = "User Status", required = false)
+  public Integer getUserStatus() {
+    return userStatus;
+  }
+
+  public void setUserStatus(Integer userStatus) {
+    this.userStatus = userStatus;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    User user = (User) o;
+    return Objects.equals(this.id, user.id) &&
+        Objects.equals(this.username, user.username) &&
+        Objects.equals(this.firstName, user.firstName) &&
+        Objects.equals(this.lastName, user.lastName) &&
+        Objects.equals(this.email, user.email) &&
+        Objects.equals(this.password, user.password) &&
+        Objects.equals(this.phone, user.phone) &&
+        Objects.equals(this.userStatus, user.userStatus);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class User {\n");
+    sb.append("    id: ").append(toIndentedString(id)).append("\n");
+    sb.append("    username: ").append(toIndentedString(username)).append("\n");
+    sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
+    sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
+    sb.append("    email: ").append(toIndentedString(email)).append("\n");
+    sb.append("    password: ").append(toIndentedString(password)).append("\n");
+    sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
+    sb.append("    userStatus: ").append(toIndentedString(userStatus)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/java-camel/src/main/resources/application.properties b/samples/server/petstore/java-camel/src/main/resources/application.properties
new file mode 100644
index 00000000000..466f657de65
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/main/resources/application.properties
@@ -0,0 +1,8 @@
+# NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (6.0.0-SNAPSHOT).
+# https://openapi-generator.tech
+# Do not edit the class manually.
+
+camel.springboot.name=camel-openapi-camel
+camel.servlet.mapping.context-path=/api/v1/*
+
+server.port=8080
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/PetApiTest.java b/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/PetApiTest.java
new file mode 100644
index 00000000000..d02598dd1cc
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/PetApiTest.java
@@ -0,0 +1,145 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (5.4.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.junit.jupiter.api.Test;
+import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest;
+import com.mashape.unirest.request.HttpRequest;
+import com.mashape.unirest.request.HttpRequestWithBody;
+import com.mashape.unirest.http.Unirest;
+import com.mashape.unirest.http.JsonNode;
+import com.mashape.unirest.http.HttpResponse;
+import java.io.InputStream;
+import org.junit.jupiter.api.Assertions;
+
+@CamelSpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
+public class PetApiTest {
+    private static final String API_URL = "http://127.0.0.1:8080/api/v1";
+
+    @Test
+    public void addPetTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/pet";
+        HttpRequest httpRequest = Unirest.post(url);
+        httpRequest = httpRequest.header("Content-Type", contentType);
+        httpRequest = httpRequest.header("Accept", accept);
+        
+        String requestBody = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void addPetTestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "/pet";
+        HttpRequest httpRequest = Unirest.post(url);
+        httpRequest = httpRequest.header("Content-Type", contentType);
+        httpRequest = httpRequest.header("Accept", accept);
+        
+        String requestBody = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        
+        
+        HttpResponse<String> httpResponse = httpRequest.asString();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    @Test
+    public void findPetsByStatusTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/pet/findByStatus";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.queryString("status", "1");
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void findPetsByTagsTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/pet/findByTags";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.queryString("tags", "1");
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void getPetByIdTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/pet/{petId}";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.routeParam("petId", "1");
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void getPetByIdTestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "/pet/{petId}";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.routeParam("petId", "1");
+        
+        
+        HttpResponse<String> httpResponse = httpRequest.asString();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    @Test
+    public void updatePetTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/pet";
+        HttpRequest httpRequest = Unirest.put(url);
+        httpRequest = httpRequest.header("Content-Type", contentType);
+        httpRequest = httpRequest.header("Accept", accept);
+        
+        String requestBody = "{ \"photoUrls\" : [ \"photoUrls\", \"photoUrls\" ], \"name\" : \"doggie\", \"id\" : 0, \"category\" : { \"name\" : \"name\", \"id\" : 6 }, \"tags\" : [ { \"name\" : \"name\", \"id\" : 1 }, { \"name\" : \"name\", \"id\" : 1 } ], \"status\" : \"available\" }";
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void updatePetTestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "/pet";
+        HttpRequest httpRequest = Unirest.put(url);
+        httpRequest = httpRequest.header("Content-Type", contentType);
+        httpRequest = httpRequest.header("Accept", accept);
+        
+        String requestBody = "<Pet> <id>123456789</id> <name>doggie</name> <photoUrls> <photoUrls>aeiou</photoUrls> </photoUrls> <tags> </tags> <status>aeiou</status> </Pet>";
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        
+        
+        HttpResponse<String> httpResponse = httpRequest.asString();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/StoreApiTest.java b/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/StoreApiTest.java
new file mode 100644
index 00000000000..f2d137065b7
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/StoreApiTest.java
@@ -0,0 +1,84 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (5.4.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.junit.jupiter.api.Test;
+import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest;
+import com.mashape.unirest.request.HttpRequest;
+import com.mashape.unirest.request.HttpRequestWithBody;
+import com.mashape.unirest.http.Unirest;
+import com.mashape.unirest.http.JsonNode;
+import com.mashape.unirest.http.HttpResponse;
+import java.io.InputStream;
+import org.junit.jupiter.api.Assertions;
+
+@CamelSpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
+public class StoreApiTest {
+    private static final String API_URL = "http://127.0.0.1:8080/api/v1";
+
+    @Test
+    public void getOrderByIdTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/store/order/{orderId}";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.routeParam("orderId", "1");
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void getOrderByIdTestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "/store/order/{orderId}";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.routeParam("orderId", "1");
+        
+        
+        HttpResponse<String> httpResponse = httpRequest.asString();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    @Test
+    public void placeOrderTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/store/order";
+        HttpRequest httpRequest = Unirest.post(url);
+        httpRequest = httpRequest.header("Content-Type", contentType);
+        httpRequest = httpRequest.header("Accept", accept);
+        
+        String requestBody = "{ \"petId\" : 6, \"quantity\" : 1, \"id\" : 0, \"shipDate\" : \"2000-01-23T04:56:07.000+00:00\", \"complete\" : false, \"status\" : \"placed\" }";
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void placeOrderTestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "/store/order";
+        HttpRequest httpRequest = Unirest.post(url);
+        httpRequest = httpRequest.header("Content-Type", contentType);
+        httpRequest = httpRequest.header("Accept", accept);
+        
+        String requestBody = "<Order> <id>123456789</id> <petId>123456789</petId> <quantity>123</quantity> <shipDate>2000-01-23T04:56:07.000Z</shipDate> <status>aeiou</status> <complete>true</complete> </Order>";
+        httpRequest = ((HttpRequestWithBody) httpRequest).body(requestBody).getHttpRequest();
+        
+        
+        HttpResponse<String> httpResponse = httpRequest.asString();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/UserApiTest.java b/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/UserApiTest.java
new file mode 100644
index 00000000000..c278b12de3b
--- /dev/null
+++ b/samples/server/petstore/java-camel/src/test/java/org/openapitools/api/UserApiTest.java
@@ -0,0 +1,51 @@
+/**
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech) (5.4.0-SNAPSHOT).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.api;
+
+import org.junit.jupiter.api.Test;
+import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest;
+import com.mashape.unirest.request.HttpRequest;
+import com.mashape.unirest.request.HttpRequestWithBody;
+import com.mashape.unirest.http.Unirest;
+import com.mashape.unirest.http.JsonNode;
+import com.mashape.unirest.http.HttpResponse;
+import java.io.InputStream;
+import org.junit.jupiter.api.Assertions;
+
+@CamelSpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
+public class UserApiTest {
+    private static final String API_URL = "http://127.0.0.1:8080/api/v1";
+
+    @Test
+    public void getUserByNameTestJson() throws Exception {
+        String contentType = "application/json";
+        String accept = "application/json";
+        String url = API_URL + "/user/{username}";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.routeParam("username", "1");
+        
+        
+        HttpResponse<JsonNode> httpResponse = httpRequest.asJson();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+    
+    @Test
+    public void getUserByNameTestXml() throws Exception {
+        String contentType = "application/xml";
+        String accept = "application/xml";
+        String url = API_URL + "/user/{username}";
+        HttpRequest httpRequest = Unirest.get(url);
+        httpRequest = httpRequest.header("Accept", accept);
+        httpRequest = httpRequest.routeParam("username", "1");
+        
+        
+        HttpResponse<String> httpResponse = httpRequest.asString();
+        Assertions.assertTrue(httpResponse.getStatus() < 400 || httpResponse.getStatus() == 415);
+    }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-micronaut-server/.gitignore b/samples/server/petstore/java-micronaut-server/.gitignore
new file mode 100644
index 00000000000..a530464afa1
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/.gitignore
@@ -0,0 +1,21 @@
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# exclude jar for gradle wrapper
+!gradle/wrapper/*.jar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+# build files
+**/target
+target
+.gradle
+build
diff --git a/samples/server/petstore/java-micronaut-server/.mvn/wrapper/MavenWrapperDownloader.java b/samples/server/petstore/java-micronaut-server/.mvn/wrapper/MavenWrapperDownloader.java
new file mode 100644
index 00000000000..fc435c409b3
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/.mvn/wrapper/MavenWrapperDownloader.java
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.Authenticator;
+import java.net.PasswordAuthentication;
+import java.net.URL;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/.mvn/wrapper/maren-wrapper.properties b/samples/server/petstore/java-micronaut-server/.mvn/wrapper/maren-wrapper.properties
new file mode 100644
index 00000000000..642d572ce90
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/.mvn/wrapper/maren-wrapper.properties
@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar
diff --git a/samples/server/petstore/java-micronaut-server/.openapi-generator-ignore b/samples/server/petstore/java-micronaut-server/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/server/petstore/java-micronaut-server/.openapi-generator/FILES b/samples/server/petstore/java-micronaut-server/.openapi-generator/FILES
new file mode 100644
index 00000000000..c1595591bf4
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/.openapi-generator/FILES
@@ -0,0 +1,36 @@
+.gitignore
+.mvn/wrapper/MavenWrapperDownloader.java
+.mvn/wrapper/maren-wrapper.properties
+.mvn/wrapper/maven-wrapper.jar
+README.md
+build.gradle
+docs/controllers/PetController.md
+docs/controllers/StoreController.md
+docs/controllers/UserController.md
+docs/models/Category.md
+docs/models/ModelApiResponse.md
+docs/models/Order.md
+docs/models/Pet.md
+docs/models/Tag.md
+docs/models/User.md
+gradle.properties
+gradle/wrapper/gradle-wrapper.jar
+gradle/wrapper/gradle-wrapper.properties
+gradlew
+gradlew.bat
+mvnw
+mvnw.bat
+pom.xml
+settings.gradle
+src/main/java/org/openapitools/Application.java
+src/main/java/org/openapitools/controller/PetController.java
+src/main/java/org/openapitools/controller/StoreController.java
+src/main/java/org/openapitools/controller/UserController.java
+src/main/java/org/openapitools/model/Category.java
+src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/Order.java
+src/main/java/org/openapitools/model/Pet.java
+src/main/java/org/openapitools/model/Tag.java
+src/main/java/org/openapitools/model/User.java
+src/main/resources/application.yml
+src/main/resources/logback.xml
diff --git a/samples/server/petstore/java-micronaut-server/.openapi-generator/VERSION b/samples/server/petstore/java-micronaut-server/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/java-micronaut-server/README.md b/samples/server/petstore/java-micronaut-server/README.md
new file mode 100644
index 00000000000..7f5a8dd218e
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/README.md
@@ -0,0 +1,27 @@
+# petstore-micronaut-server
+
+This is a generated server based on [Micronaut](https://micronaut.io/) framework.
+
+## Configuration
+
+To run the whole application, use [Application.java](src/main/java/org/openapitools/Application.java) as main class.
+
+Read **[Micronaut Guide](https://docs.micronaut.io/latest/guide/#ideSetup)** for detailed description on IDE setup and Micronaut Framework features.
+
+All the properties can be changed in the [application.yml](src/main/resources/application.yml) file or when creating micronaut application as described in **[Micronaut Guide - Configuration Section](https://docs.micronaut.io/latest/guide/#config)**.
+
+## Controller Guides
+
+Description on how to create Apis is given inside individual api guides:
+
+* [PetController](docs/controllers/PetController.md)
+* [StoreController](docs/controllers/StoreController.md)
+* [UserController](docs/controllers/UserController.md)
+
+## Author
+
+
+
+
+
+
diff --git a/samples/server/petstore/java-micronaut-server/build.gradle b/samples/server/petstore/java-micronaut-server/build.gradle
new file mode 100644
index 00000000000..29b6603f793
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/build.gradle
@@ -0,0 +1,43 @@
+plugins {
+    id("groovy")
+    id("com.github.johnrengelman.shadow") version "7.1.1"
+    id("io.micronaut.application") version "3.1.1"
+}
+
+version = "1.0.0"
+group = "org.openapitools"
+
+repositories {
+    mavenCentral()
+}
+
+micronaut {
+    runtime("netty")
+    testRuntime("spock2")
+    processing {
+        incremental(true)
+        annotations("org.openapitools.*")
+    }
+}
+
+
+dependencies {
+    annotationProcessor("io.micronaut:micronaut-http-validation")
+    implementation("io.micronaut:micronaut-http-client")
+    implementation("io.micronaut:micronaut-runtime")
+    implementation("io.micronaut:micronaut-validation")
+    implementation("io.micronaut.reactor:micronaut-reactor")
+    implementation("io.swagger:swagger-annotations:1.5.9")
+    runtimeOnly("ch.qos.logback:logback-classic")
+}
+
+// TODO Set the main class
+application {
+    mainClass.set("org.openapitools.Application")
+}
+java {
+    sourceCompatibility = JavaVersion.toVersion("1.8")
+    targetCompatibility = JavaVersion.toVersion("1.8")
+}
+
+graalvmNative.toolchainDetection = false
diff --git a/samples/server/petstore/java-micronaut-server/docs/controllers/PetController.md b/samples/server/petstore/java-micronaut-server/docs/controllers/PetController.md
new file mode 100644
index 00000000000..da831a4f13b
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/controllers/PetController.md
@@ -0,0 +1,208 @@
+# PetController
+
+All URIs are relative to `"/v2"`
+
+The controller class is defined in **[PetController.java](../../src/main/java/org/openapitools/controller/PetController.java)**
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**addPet**](#addPet) | **POST** /pet | Add a new pet to the store
+[**deletePet**](#deletePet) | **DELETE** /pet/{petId} | Deletes a pet
+[**findPetsByStatus**](#findPetsByStatus) | **GET** /pet/findByStatus | Finds Pets by status
+[**findPetsByTags**](#findPetsByTags) | **GET** /pet/findByTags | Finds Pets by tags
+[**getPetById**](#getPetById) | **GET** /pet/{petId} | Find pet by ID
+[**updatePet**](#updatePet) | **PUT** /pet | Update an existing pet
+[**updatePetWithForm**](#updatePetWithForm) | **POST** /pet/{petId} | Updates a pet in the store with form data
+[**uploadFile**](#uploadFile) | **POST** /pet/{petId}/uploadImage | uploads an image
+
+<a name="addPet"></a>
+# **addPet**
+```java
+Mono<Pet> PetController.addPet(pet)
+```
+
+Add a new pet to the store
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**pet** | [**Pet**](../../docs/models/Pet.md) | Pet object that needs to be added to the store |
+
+### Return type
+[**Pet**](../../docs/models/Pet.md)
+
+### Authorization
+* **petstore_auth**, scopes: `write:pets`, `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`, `application/xml`
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="deletePet"></a>
+# **deletePet**
+```java
+Mono<Object> PetController.deletePet(petIdapiKey)
+```
+
+Deletes a pet
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**petId** | `Long` | Pet id to delete |
+**apiKey** | `String` |  | [optional parameter]
+
+
+### Authorization
+* **petstore_auth**, scopes: `write:pets`, `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: Not defined
+
+<a name="findPetsByStatus"></a>
+# **findPetsByStatus**
+```java
+Mono<List<Pet>> PetController.findPetsByStatus(status)
+```
+
+Finds Pets by status
+
+Multiple status values can be provided with comma separated strings
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**status** | [**List&lt;String&gt;**](../../docs/models/String.md) | Status values that need to be considered for filter | [enum: `available`, `pending`, `sold`]
+
+### Return type
+[**List&lt;Pet&gt;**](../../docs/models/Pet.md)
+
+### Authorization
+* **petstore_auth**, scopes: `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="findPetsByTags"></a>
+# **findPetsByTags**
+```java
+Mono<List<Pet>> PetController.findPetsByTags(tags)
+```
+
+Finds Pets by tags
+
+Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**tags** | [**List&lt;String&gt;**](../../docs/models/String.md) | Tags to filter by |
+
+### Return type
+[**List&lt;Pet&gt;**](../../docs/models/Pet.md)
+
+### Authorization
+* **petstore_auth**, scopes: `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="getPetById"></a>
+# **getPetById**
+```java
+Mono<Pet> PetController.getPetById(petId)
+```
+
+Find pet by ID
+
+Returns a single pet
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**petId** | `Long` | ID of pet to return |
+
+### Return type
+[**Pet**](../../docs/models/Pet.md)
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="updatePet"></a>
+# **updatePet**
+```java
+Mono<Pet> PetController.updatePet(pet)
+```
+
+Update an existing pet
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**pet** | [**Pet**](../../docs/models/Pet.md) | Pet object that needs to be added to the store |
+
+### Return type
+[**Pet**](../../docs/models/Pet.md)
+
+### Authorization
+* **petstore_auth**, scopes: `write:pets`, `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`, `application/xml`
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="updatePetWithForm"></a>
+# **updatePetWithForm**
+```java
+Mono<Object> PetController.updatePetWithForm(petIdnamestatus)
+```
+
+Updates a pet in the store with form data
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**petId** | `Long` | ID of pet that needs to be updated |
+**name** | `String` | Updated name of the pet | [optional parameter]
+**status** | `String` | Updated status of the pet | [optional parameter]
+
+
+### Authorization
+* **petstore_auth**, scopes: `write:pets`, `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/x-www-form-urlencoded`
+ - **Produces Content-Type**: Not defined
+
+<a name="uploadFile"></a>
+# **uploadFile**
+```java
+Mono<ModelApiResponse> PetController.uploadFile(petIdadditionalMetadata_file)
+```
+
+uploads an image
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**petId** | `Long` | ID of pet to update |
+**additionalMetadata** | `String` | Additional data to pass to server | [optional parameter]
+**_file** | `CompletedFileUpload` | file to upload | [optional parameter]
+
+### Return type
+[**ModelApiResponse**](../../docs/models/ModelApiResponse.md)
+
+### Authorization
+* **petstore_auth**, scopes: `write:pets`, `read:pets`
+
+### HTTP request headers
+ - **Accepts Content-Type**: `multipart/form-data`
+ - **Produces Content-Type**: `application/json`
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/controllers/StoreController.md b/samples/server/petstore/java-micronaut-server/docs/controllers/StoreController.md
new file mode 100644
index 00000000000..0cc9c7f0a20
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/controllers/StoreController.md
@@ -0,0 +1,99 @@
+# StoreController
+
+All URIs are relative to `"/v2"`
+
+The controller class is defined in **[StoreController.java](../../src/main/java/org/openapitools/controller/StoreController.java)**
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**deleteOrder**](#deleteOrder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID
+[**getInventory**](#getInventory) | **GET** /store/inventory | Returns pet inventories by status
+[**getOrderById**](#getOrderById) | **GET** /store/order/{orderId} | Find purchase order by ID
+[**placeOrder**](#placeOrder) | **POST** /store/order | Place an order for a pet
+
+<a name="deleteOrder"></a>
+# **deleteOrder**
+```java
+Mono<Object> StoreController.deleteOrder(orderId)
+```
+
+Delete purchase order by ID
+
+For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**orderId** | `String` | ID of the order that needs to be deleted |
+
+
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: Not defined
+
+<a name="getInventory"></a>
+# **getInventory**
+```java
+Mono<Map<String, Integer>> StoreController.getInventory()
+```
+
+Returns pet inventories by status
+
+Returns a map of status codes to quantities
+
+
+### Return type
+`Map&lt;String, Integer&gt;`
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/json`
+
+<a name="getOrderById"></a>
+# **getOrderById**
+```java
+Mono<Order> StoreController.getOrderById(orderId)
+```
+
+Find purchase order by ID
+
+For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**orderId** | `Long` | ID of pet that needs to be fetched |
+
+### Return type
+[**Order**](../../docs/models/Order.md)
+
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="placeOrder"></a>
+# **placeOrder**
+```java
+Mono<Order> StoreController.placeOrder(order)
+```
+
+Place an order for a pet
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**order** | [**Order**](../../docs/models/Order.md) | order placed for purchasing the pet |
+
+### Return type
+[**Order**](../../docs/models/Order.md)
+
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/controllers/UserController.md b/samples/server/petstore/java-micronaut-server/docs/controllers/UserController.md
new file mode 100644
index 00000000000..31012f2b441
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/controllers/UserController.md
@@ -0,0 +1,189 @@
+# UserController
+
+All URIs are relative to `"/v2"`
+
+The controller class is defined in **[UserController.java](../../src/main/java/org/openapitools/controller/UserController.java)**
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**createUser**](#createUser) | **POST** /user | Create user
+[**createUsersWithArrayInput**](#createUsersWithArrayInput) | **POST** /user/createWithArray | Creates list of users with given input array
+[**createUsersWithListInput**](#createUsersWithListInput) | **POST** /user/createWithList | Creates list of users with given input array
+[**deleteUser**](#deleteUser) | **DELETE** /user/{username} | Delete user
+[**getUserByName**](#getUserByName) | **GET** /user/{username} | Get user by user name
+[**loginUser**](#loginUser) | **GET** /user/login | Logs user into the system
+[**logoutUser**](#logoutUser) | **GET** /user/logout | Logs out current logged in user session
+[**updateUser**](#updateUser) | **PUT** /user/{username} | Updated user
+
+<a name="createUser"></a>
+# **createUser**
+```java
+Mono<Object> UserController.createUser(user)
+```
+
+Create user
+
+This can only be done by the logged in user.
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**user** | [**User**](../../docs/models/User.md) | Created user object |
+
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`
+ - **Produces Content-Type**: Not defined
+
+<a name="createUsersWithArrayInput"></a>
+# **createUsersWithArrayInput**
+```java
+Mono<Object> UserController.createUsersWithArrayInput(user)
+```
+
+Creates list of users with given input array
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**user** | [**List&lt;User&gt;**](../../docs/models/User.md) | List of user object |
+
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`
+ - **Produces Content-Type**: Not defined
+
+<a name="createUsersWithListInput"></a>
+# **createUsersWithListInput**
+```java
+Mono<Object> UserController.createUsersWithListInput(user)
+```
+
+Creates list of users with given input array
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**user** | [**List&lt;User&gt;**](../../docs/models/User.md) | List of user object |
+
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`
+ - **Produces Content-Type**: Not defined
+
+<a name="deleteUser"></a>
+# **deleteUser**
+```java
+Mono<Object> UserController.deleteUser(username)
+```
+
+Delete user
+
+This can only be done by the logged in user.
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**username** | `String` | The name that needs to be deleted |
+
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: Not defined
+
+<a name="getUserByName"></a>
+# **getUserByName**
+```java
+Mono<User> UserController.getUserByName(username)
+```
+
+Get user by user name
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**username** | `String` | The name that needs to be fetched. Use user1 for testing. |
+
+### Return type
+[**User**](../../docs/models/User.md)
+
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="loginUser"></a>
+# **loginUser**
+```java
+Mono<String> UserController.loginUser(usernamepassword)
+```
+
+Logs user into the system
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**username** | `String` | The user name for login |
+**password** | `String` | The password for login in clear text |
+
+### Return type
+`String`
+
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: `application/xml`, `application/json`
+
+<a name="logoutUser"></a>
+# **logoutUser**
+```java
+Mono<Object> UserController.logoutUser()
+```
+
+Logs out current logged in user session
+
+
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: Not defined
+ - **Produces Content-Type**: Not defined
+
+<a name="updateUser"></a>
+# **updateUser**
+```java
+Mono<Object> UserController.updateUser(usernameuser)
+```
+
+Updated user
+
+This can only be done by the logged in user.
+
+### Parameters
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+**username** | `String` | name that need to be deleted |
+**user** | [**User**](../../docs/models/User.md) | Updated user object |
+
+
+### Authorization
+* **api_key**
+
+### HTTP request headers
+ - **Accepts Content-Type**: `application/json`
+ - **Produces Content-Type**: Not defined
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/models/Category.md b/samples/server/petstore/java-micronaut-server/docs/models/Category.md
new file mode 100644
index 00000000000..65cdd608ada
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/models/Category.md
@@ -0,0 +1,18 @@
+
+
+# Category
+
+A category for a pet
+
+The class is defined in **[Category.java](../../src/main/java/org/openapitools/model/Category.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | `Long` |  |  [optional property]
+**name** | `String` |  |  [optional property]
+
+
+
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/models/ModelApiResponse.md b/samples/server/petstore/java-micronaut-server/docs/models/ModelApiResponse.md
new file mode 100644
index 00000000000..be3226fa260
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/models/ModelApiResponse.md
@@ -0,0 +1,20 @@
+
+
+# ModelApiResponse
+
+Describes the result of uploading an image resource
+
+The class is defined in **[ModelApiResponse.java](../../src/main/java/org/openapitools/model/ModelApiResponse.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**code** | `Integer` |  |  [optional property]
+**type** | `String` |  |  [optional property]
+**message** | `String` |  |  [optional property]
+
+
+
+
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/models/Order.md b/samples/server/petstore/java-micronaut-server/docs/models/Order.md
new file mode 100644
index 00000000000..b514feb22d0
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/models/Order.md
@@ -0,0 +1,33 @@
+
+
+# Order
+
+An order for a pets from the pet store
+
+The class is defined in **[Order.java](../../src/main/java/org/openapitools/model/Order.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | `Long` |  |  [optional property]
+**petId** | `Long` |  |  [optional property]
+**quantity** | `Integer` |  |  [optional property]
+**shipDate** | `LocalDateTime` |  |  [optional property]
+**status** | [**StatusEnum**](#StatusEnum) | Order Status |  [optional property]
+**complete** | `Boolean` |  |  [optional property]
+
+
+
+
+
+## StatusEnum
+
+Name | Value
+---- | -----
+PLACED | `"placed"`
+APPROVED | `"approved"`
+DELIVERED | `"delivered"`
+
+
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/models/Pet.md b/samples/server/petstore/java-micronaut-server/docs/models/Pet.md
new file mode 100644
index 00000000000..9f8876b0df5
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/models/Pet.md
@@ -0,0 +1,33 @@
+
+
+# Pet
+
+A pet for sale in the pet store
+
+The class is defined in **[Pet.java](../../src/main/java/org/openapitools/model/Pet.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | `Long` |  |  [optional property]
+**category** | [`Category`](Category.md) |  |  [optional property]
+**name** | `String` |  | 
+**photoUrls** | `List&lt;String&gt;` |  | 
+**tags** | [`List&lt;Tag&gt;`](Tag.md) |  |  [optional property]
+**status** | [**StatusEnum**](#StatusEnum) | pet status in the store |  [optional property]
+
+
+
+
+
+
+## StatusEnum
+
+Name | Value
+---- | -----
+AVAILABLE | `"available"`
+PENDING | `"pending"`
+SOLD | `"sold"`
+
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/models/Tag.md b/samples/server/petstore/java-micronaut-server/docs/models/Tag.md
new file mode 100644
index 00000000000..557c72572a2
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/models/Tag.md
@@ -0,0 +1,18 @@
+
+
+# Tag
+
+A tag for a pet
+
+The class is defined in **[Tag.java](../../src/main/java/org/openapitools/model/Tag.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | `Long` |  |  [optional property]
+**name** | `String` |  |  [optional property]
+
+
+
+
diff --git a/samples/server/petstore/java-micronaut-server/docs/models/User.md b/samples/server/petstore/java-micronaut-server/docs/models/User.md
new file mode 100644
index 00000000000..dac90ef84e7
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/docs/models/User.md
@@ -0,0 +1,30 @@
+
+
+# User
+
+A User who is purchasing from the pet store
+
+The class is defined in **[User.java](../../src/main/java/org/openapitools/model/User.java)**
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | `Long` |  |  [optional property]
+**username** | `String` |  |  [optional property]
+**firstName** | `String` |  |  [optional property]
+**lastName** | `String` |  |  [optional property]
+**email** | `String` |  |  [optional property]
+**password** | `String` |  |  [optional property]
+**phone** | `String` |  |  [optional property]
+**userStatus** | `Integer` | User Status |  [optional property]
+
+
+
+
+
+
+
+
+
+
diff --git a/samples/server/petstore/java-micronaut-server/gradle.properties b/samples/server/petstore/java-micronaut-server/gradle.properties
new file mode 100644
index 00000000000..70b9dde78f1
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/gradle.properties
@@ -0,0 +1 @@
+micronautVersion=3.2.6
\ No newline at end of file
diff --git a/samples/server/petstore/java-micronaut-server/gradle/wrapper/gradle-wrapper.jar b/samples/server/petstore/java-micronaut-server/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/samples/server/petstore/java-micronaut-server/gradle/wrapper/gradle-wrapper.properties b/samples/server/petstore/java-micronaut-server/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000000..f2e1eb1fd47
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip
diff --git a/samples/server/petstore/java-micronaut-server/gradlew b/samples/server/petstore/java-micronaut-server/gradlew
new file mode 100644
index 00000000000..4f906e0c811
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/samples/server/petstore/java-micronaut-server/gradlew.bat b/samples/server/petstore/java-micronaut-server/gradlew.bat
new file mode 100644
index 00000000000..107acd32c4e
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/samples/server/petstore/java-micronaut-server/mvnw b/samples/server/petstore/java-micronaut-server/mvnw
new file mode 100644
index 00000000000..a16b5431b4c
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/mvnw
@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/samples/server/petstore/java-micronaut-server/mvnw.bat b/samples/server/petstore/java-micronaut-server/mvnw.bat
new file mode 100644
index 00000000000..c8d43372c98
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/mvnw.bat
@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%
diff --git a/samples/server/petstore/java-micronaut-server/pom.xml b/samples/server/petstore/java-micronaut-server/pom.xml
new file mode 100644
index 00000000000..71aee310caa
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/pom.xml
@@ -0,0 +1,159 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>petstore-micronaut-server</artifactId>
+    <version>1.0.0</version>
+    <packaging>${packaging}</packaging>
+
+    <parent>
+        <groupId>io.micronaut</groupId>
+        <artifactId>micronaut-parent</artifactId>
+        <version>3.2.6</version>
+    </parent>
+
+    <properties>
+        <packaging>jar</packaging>
+        <jdk.version>1.8</jdk.version>
+        <!-- If you are building with JDK 9 or higher, you can uncomment the lines below to set the release version -->
+        <!-- <release.version>8</release.version> -->
+        <micronaut.version>3.2.6</micronaut.version>
+        <exec.mainClass>org.openapitools.Application</exec.mainClass>
+        <micronaut.runtime>netty</micronaut.runtime>
+        <swagger-annotations-version>1.5.21</swagger-annotations-version>
+    </properties>
+
+    <repositories>
+        <repository>
+            <id>central</id>
+            <url>https://repo.maven.apache.org/maven2</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.micronaut</groupId>
+            <artifactId>micronaut-inject</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut</groupId>
+            <artifactId>micronaut-validation</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut</groupId>
+            <artifactId>micronaut-inject-groovy</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.spockframework</groupId>
+            <artifactId>spock-core</artifactId>
+            <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.codehaus.groovy</groupId>
+                    <artifactId>groovy-all</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut.test</groupId>
+            <artifactId>micronaut-test-spock</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut</groupId>
+            <artifactId>micronaut-http-client</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut</groupId>
+            <artifactId>micronaut-http-server-netty</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut</groupId>
+            <artifactId>micronaut-runtime</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.micronaut.reactor</groupId>
+            <artifactId>micronaut-reactor</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.swagger</groupId>
+            <artifactId>swagger-annotations</artifactId>
+            <version>${swagger-annotations-version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>io.micronaut.build</groupId>
+                <artifactId>micronaut-maven-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <!-- Uncomment to enable incremental compilation -->
+                    <!-- <useIncrementalCompilation>false</useIncrementalCompilation> -->
+
+                    <annotationProcessorPaths combine.children="append">
+                        <path>
+                            <groupId>io.micronaut</groupId>
+                            <artifactId>micronaut-http-validation</artifactId>
+                            <version>${micronaut.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                    <compilerArgs>
+                        <arg>-Amicronaut.processing.group=org.openapitools</arg>
+                        <arg>-Amicronaut.processing.module=petstore-micronaut-server</arg>
+                    </compilerArgs>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <configuration>
+                    <includes>
+                        <include>**/*Spec.*</include>
+                        <include>**/*Test.*</include>
+                    </includes>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.codehaus.gmavenplus</groupId>
+                <artifactId>gmavenplus-plugin</artifactId>
+                <version>1.9.0</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>addSources</goal>
+                            <goal>generateStubs</goal>
+                            <goal>compile</goal>
+                            <goal>removeStubs</goal>
+                            <goal>addTestSources</goal>
+                            <goal>generateTestStubs</goal>
+                            <goal>compileTests</goal>
+                            <goal>removeTestStubs</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/samples/server/petstore/java-micronaut-server/settings.gradle b/samples/server/petstore/java-micronaut-server/settings.gradle
new file mode 100644
index 00000000000..f96ffa51ae2
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = "petstore-micronaut-server"
\ No newline at end of file
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/Application.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/Application.java
new file mode 100644
index 00000000000..54b6adc71ec
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/Application.java
@@ -0,0 +1,9 @@
+package org.openapitools;
+
+import io.micronaut.runtime.Micronaut;
+
+public class Application {
+    public static void main(String[] args) {
+        Micronaut.run(Application.class, args);
+    }
+}
\ No newline at end of file
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/PetController.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/PetController.java
new file mode 100644
index 00000000000..330ee3b7074
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/PetController.java
@@ -0,0 +1,286 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.controller;
+
+import io.micronaut.http.annotation.*;
+import io.micronaut.core.annotation.Nullable;
+import io.micronaut.core.convert.format.Format;
+import reactor.core.publisher.Mono;
+import io.micronaut.http.multipart.CompletedFileUpload;
+import org.openapitools.model.ModelApiResponse;
+import org.openapitools.model.Pet;
+import javax.annotation.Generated;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.annotations.*;
+
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Controller("${context-path}")
+public class PetController {
+    /**
+     * Add a new pet to the store
+     *
+     * @param pet Pet object that needs to be added to the store (required)
+     * @return Pet
+     */
+    @ApiOperation(
+        value = "Add a new pet to the store",
+        nickname = "addPet",
+        response = Pet.class,
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "write:pets", description = "modify pets in your account"),
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Pet.class),
+        @ApiResponse(code = 405, message = "Invalid input")})
+    @Post(uri="/pet")
+    @Produces(value = {"application/xml", "application/json"})
+    @Consumes(value = {"application/json", "application/xml"})
+    public Mono<Pet> addPet(
+        @Body @NotNull @Valid Pet pet
+    ) {
+        // TODO implement addPet() body;
+        Mono<Pet> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Deletes a pet
+     *
+     * @param petId Pet id to delete (required)
+     * @param apiKey  (optional)
+     */
+    @ApiOperation(
+        value = "Deletes a pet",
+        nickname = "deletePet",
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "write:pets", description = "modify pets in your account"),
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 400, message = "Invalid pet value")})
+    @Delete(uri="/pet/{petId}")
+    @Produces(value = {})
+    public Mono<Object> deletePet(
+        @PathVariable(value="petId") @NotNull Long petId, 
+        @Header(value="api_key") @Nullable String apiKey
+    ) {
+        // TODO implement deletePet() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     *
+     * @param status Status values that need to be considered for filter (required)
+     * @return List&lt;Pet&gt;
+     */
+    @ApiOperation(
+        value = "Finds Pets by status",
+        nickname = "findPetsByStatus",
+        notes = "Multiple status values can be provided with comma separated strings",
+        response = Pet.class,
+        responseContainer = "array",
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Pet.class, responseContainer = "array"),
+        @ApiResponse(code = 400, message = "Invalid status value")})
+    @Get(uri="/pet/findByStatus")
+    @Produces(value = {"application/xml", "application/json"})
+    public Mono<List<Pet>> findPetsByStatus(
+        @QueryValue(value="status") @NotNull List<String> status
+    ) {
+        // TODO implement findPetsByStatus() body;
+        Mono<List<Pet>> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Finds Pets by tags
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     *
+     * @param tags Tags to filter by (required)
+     * @return List&lt;Pet&gt;
+     */
+    @ApiOperation(
+        value = "Finds Pets by tags",
+        nickname = "findPetsByTags",
+        notes = "Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.",
+        response = Pet.class,
+        responseContainer = "array",
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Pet.class, responseContainer = "array"),
+        @ApiResponse(code = 400, message = "Invalid tag value")})
+    @Get(uri="/pet/findByTags")
+    @Produces(value = {"application/xml", "application/json"})
+    public Mono<List<Pet>> findPetsByTags(
+        @QueryValue(value="tags") @NotNull List<String> tags
+    ) {
+        // TODO implement findPetsByTags() body;
+        Mono<List<Pet>> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Find pet by ID
+     * Returns a single pet
+     *
+     * @param petId ID of pet to return (required)
+     * @return Pet
+     */
+    @ApiOperation(
+        value = "Find pet by ID",
+        nickname = "getPetById",
+        notes = "Returns a single pet",
+        response = Pet.class,
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Pet.class),
+        @ApiResponse(code = 400, message = "Invalid ID supplied"),
+        @ApiResponse(code = 404, message = "Pet not found")})
+    @Get(uri="/pet/{petId}")
+    @Produces(value = {"application/xml", "application/json"})
+    public Mono<Pet> getPetById(
+        @PathVariable(value="petId") @NotNull Long petId
+    ) {
+        // TODO implement getPetById() body;
+        Mono<Pet> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Update an existing pet
+     *
+     * @param pet Pet object that needs to be added to the store (required)
+     * @return Pet
+     */
+    @ApiOperation(
+        value = "Update an existing pet",
+        nickname = "updatePet",
+        response = Pet.class,
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "write:pets", description = "modify pets in your account"),
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Pet.class),
+        @ApiResponse(code = 400, message = "Invalid ID supplied"),
+        @ApiResponse(code = 404, message = "Pet not found"),
+        @ApiResponse(code = 405, message = "Validation exception")})
+    @Put(uri="/pet")
+    @Produces(value = {"application/xml", "application/json"})
+    @Consumes(value = {"application/json", "application/xml"})
+    public Mono<Pet> updatePet(
+        @Body @NotNull @Valid Pet pet
+    ) {
+        // TODO implement updatePet() body;
+        Mono<Pet> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Updates a pet in the store with form data
+     *
+     * @param petId ID of pet that needs to be updated (required)
+     * @param name Updated name of the pet (optional)
+     * @param status Updated status of the pet (optional)
+     */
+    @ApiOperation(
+        value = "Updates a pet in the store with form data",
+        nickname = "updatePetWithForm",
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "write:pets", description = "modify pets in your account"),
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 405, message = "Invalid input")})
+    @Post(uri="/pet/{petId}")
+    @Produces(value = {})
+    @Consumes(value = {"application/x-www-form-urlencoded"})
+    public Mono<Object> updatePetWithForm(
+        @PathVariable(value="petId") @NotNull Long petId, 
+        @Nullable String name, 
+        @Nullable String status
+    ) {
+        // TODO implement updatePetWithForm() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * uploads an image
+     *
+     * @param petId ID of pet to update (required)
+     * @param additionalMetadata Additional data to pass to server (optional)
+     * @param _file file to upload (optional)
+     * @return ModelApiResponse
+     */
+    @ApiOperation(
+        value = "uploads an image",
+        nickname = "uploadFile",
+        response = ModelApiResponse.class,
+        authorizations = {
+            @Authorization(value = "petstore_auth", scopes = {
+                @AuthorizationScope(scope = "write:pets", description = "modify pets in your account"),
+                @AuthorizationScope(scope = "read:pets", description = "read your pets")
+            })
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class)})
+    @Post(uri="/pet/{petId}/uploadImage")
+    @Produces(value = {"application/json"})
+    @Consumes(value = {"multipart/form-data"})
+    public Mono<ModelApiResponse> uploadFile(
+        @PathVariable(value="petId") @NotNull Long petId, 
+        @Nullable String additionalMetadata, 
+        @Nullable CompletedFileUpload _file
+    ) {
+        // TODO implement uploadFile() body;
+        Mono<ModelApiResponse> result = Mono.empty();
+        return result;
+    }
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/StoreController.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/StoreController.java
new file mode 100644
index 00000000000..3ae60165ca0
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/StoreController.java
@@ -0,0 +1,136 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.controller;
+
+import io.micronaut.http.annotation.*;
+import io.micronaut.core.annotation.Nullable;
+import io.micronaut.core.convert.format.Format;
+import reactor.core.publisher.Mono;
+import org.openapitools.model.Order;
+import javax.annotation.Generated;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.annotations.*;
+
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Controller("${context-path}")
+public class StoreController {
+    /**
+     * Delete purchase order by ID
+     * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+     *
+     * @param orderId ID of the order that needs to be deleted (required)
+     */
+    @ApiOperation(
+        value = "Delete purchase order by ID",
+        nickname = "deleteOrder",
+        notes = "For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors",
+        authorizations = {},
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 400, message = "Invalid ID supplied"),
+        @ApiResponse(code = 404, message = "Order not found")})
+    @Delete(uri="/store/order/{orderId}")
+    @Produces(value = {})
+    public Mono<Object> deleteOrder(
+        @PathVariable(value="orderId") @NotNull String orderId
+    ) {
+        // TODO implement deleteOrder() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Returns pet inventories by status
+     * Returns a map of status codes to quantities
+     *
+     * @return Map&lt;String, Integer&gt;
+     */
+    @ApiOperation(
+        value = "Returns pet inventories by status",
+        nickname = "getInventory",
+        notes = "Returns a map of status codes to quantities",
+        response = Integer.class,
+        responseContainer = "map",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Map.class, responseContainer = "map")})
+    @Get(uri="/store/inventory")
+    @Produces(value = {"application/json"})
+    public Mono<Map<String, Integer>> getInventory() {
+        // TODO implement getInventory() body;
+        Mono<Map<String, Integer>> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Find purchase order by ID
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     *
+     * @param orderId ID of pet that needs to be fetched (required)
+     * @return Order
+     */
+    @ApiOperation(
+        value = "Find purchase order by ID",
+        nickname = "getOrderById",
+        notes = "For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions",
+        response = Order.class,
+        authorizations = {},
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Order.class),
+        @ApiResponse(code = 400, message = "Invalid ID supplied"),
+        @ApiResponse(code = 404, message = "Order not found")})
+    @Get(uri="/store/order/{orderId}")
+    @Produces(value = {"application/xml", "application/json"})
+    public Mono<Order> getOrderById(
+        @PathVariable(value="orderId") @NotNull @Min(1L) @Max(5L) Long orderId
+    ) {
+        // TODO implement getOrderById() body;
+        Mono<Order> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Place an order for a pet
+     *
+     * @param order order placed for purchasing the pet (required)
+     * @return Order
+     */
+    @ApiOperation(
+        value = "Place an order for a pet",
+        nickname = "placeOrder",
+        response = Order.class,
+        authorizations = {},
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = Order.class),
+        @ApiResponse(code = 400, message = "Invalid Order")})
+    @Post(uri="/store/order")
+    @Produces(value = {"application/xml", "application/json"})
+    @Consumes(value = {"application/json"})
+    public Mono<Order> placeOrder(
+        @Body @NotNull @Valid Order order
+    ) {
+        // TODO implement placeOrder() body;
+        Mono<Order> result = Mono.empty();
+        return result;
+    }
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/UserController.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/UserController.java
new file mode 100644
index 00000000000..78adec91467
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/UserController.java
@@ -0,0 +1,240 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.controller;
+
+import io.micronaut.http.annotation.*;
+import io.micronaut.core.annotation.Nullable;
+import io.micronaut.core.convert.format.Format;
+import reactor.core.publisher.Mono;
+import java.time.LocalDateTime;
+import org.openapitools.model.User;
+import javax.annotation.Generated;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+import io.swagger.annotations.*;
+
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Controller("${context-path}")
+public class UserController {
+    /**
+     * Create user
+     * This can only be done by the logged in user.
+     *
+     * @param user Created user object (required)
+     */
+    @ApiOperation(
+        value = "Create user",
+        nickname = "createUser",
+        notes = "This can only be done by the logged in user.",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 0, message = "successful operation")})
+    @Post(uri="/user")
+    @Produces(value = {})
+    @Consumes(value = {"application/json"})
+    public Mono<Object> createUser(
+        @Body @NotNull @Valid User user
+    ) {
+        // TODO implement createUser() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Creates list of users with given input array
+     *
+     * @param user List of user object (required)
+     */
+    @ApiOperation(
+        value = "Creates list of users with given input array",
+        nickname = "createUsersWithArrayInput",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 0, message = "successful operation")})
+    @Post(uri="/user/createWithArray")
+    @Produces(value = {})
+    @Consumes(value = {"application/json"})
+    public Mono<Object> createUsersWithArrayInput(
+        @Body @NotNull List<User> user
+    ) {
+        // TODO implement createUsersWithArrayInput() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Creates list of users with given input array
+     *
+     * @param user List of user object (required)
+     */
+    @ApiOperation(
+        value = "Creates list of users with given input array",
+        nickname = "createUsersWithListInput",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 0, message = "successful operation")})
+    @Post(uri="/user/createWithList")
+    @Produces(value = {})
+    @Consumes(value = {"application/json"})
+    public Mono<Object> createUsersWithListInput(
+        @Body @NotNull List<User> user
+    ) {
+        // TODO implement createUsersWithListInput() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Delete user
+     * This can only be done by the logged in user.
+     *
+     * @param username The name that needs to be deleted (required)
+     */
+    @ApiOperation(
+        value = "Delete user",
+        nickname = "deleteUser",
+        notes = "This can only be done by the logged in user.",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 400, message = "Invalid username supplied"),
+        @ApiResponse(code = 404, message = "User not found")})
+    @Delete(uri="/user/{username}")
+    @Produces(value = {})
+    public Mono<Object> deleteUser(
+        @PathVariable(value="username") @NotNull String username
+    ) {
+        // TODO implement deleteUser() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Get user by user name
+     *
+     * @param username The name that needs to be fetched. Use user1 for testing. (required)
+     * @return User
+     */
+    @ApiOperation(
+        value = "Get user by user name",
+        nickname = "getUserByName",
+        response = User.class,
+        authorizations = {},
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = User.class),
+        @ApiResponse(code = 400, message = "Invalid username supplied"),
+        @ApiResponse(code = 404, message = "User not found")})
+    @Get(uri="/user/{username}")
+    @Produces(value = {"application/xml", "application/json"})
+    public Mono<User> getUserByName(
+        @PathVariable(value="username") @NotNull String username
+    ) {
+        // TODO implement getUserByName() body;
+        Mono<User> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Logs user into the system
+     *
+     * @param username The user name for login (required)
+     * @param password The password for login in clear text (required)
+     * @return String
+     */
+    @ApiOperation(
+        value = "Logs user into the system",
+        nickname = "loginUser",
+        response = String.class,
+        authorizations = {},
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 200, message = "successful operation", response = String.class),
+        @ApiResponse(code = 400, message = "Invalid username/password supplied")})
+    @Get(uri="/user/login")
+    @Produces(value = {"application/xml", "application/json"})
+    public Mono<String> loginUser(
+        @QueryValue(value="username") @NotNull @Pattern(regexp="^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$") String username, 
+        @QueryValue(value="password") @NotNull String password
+    ) {
+        // TODO implement loginUser() body;
+        Mono<String> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Logs out current logged in user session
+     *
+     */
+    @ApiOperation(
+        value = "Logs out current logged in user session",
+        nickname = "logoutUser",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 0, message = "successful operation")})
+    @Get(uri="/user/logout")
+    @Produces(value = {})
+    public Mono<Object> logoutUser() {
+        // TODO implement logoutUser() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+
+    /**
+     * Updated user
+     * This can only be done by the logged in user.
+     *
+     * @param username name that need to be deleted (required)
+     * @param user Updated user object (required)
+     */
+    @ApiOperation(
+        value = "Updated user",
+        nickname = "updateUser",
+        notes = "This can only be done by the logged in user.",
+        authorizations = {
+            @Authorization(value = "api_key")
+        },
+        tags={})
+    @ApiResponses(value = {
+        @ApiResponse(code = 400, message = "Invalid user supplied"),
+        @ApiResponse(code = 404, message = "User not found")})
+    @Put(uri="/user/{username}")
+    @Produces(value = {})
+    @Consumes(value = {"application/json"})
+    public Mono<Object> updateUser(
+        @PathVariable(value="username") @NotNull String username, 
+        @Body @NotNull @Valid User user
+    ) {
+        // TODO implement updateUser() body;
+        Mono<Object> result = Mono.empty();
+        return result;
+    }
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Category.java
new file mode 100644
index 00000000000..e6a3f7e9432
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Category.java
@@ -0,0 +1,133 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.*;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+import io.micronaut.core.annotation.*;
+import javax.annotation.Generated;
+
+/**
+ * A category for a pet
+ */
+@ApiModel(description = "A category for a pet")
+@JsonPropertyOrder({
+  Category.JSON_PROPERTY_ID,
+  Category.JSON_PROPERTY_NAME
+})
+@JsonTypeName("Category")
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Introspected
+public class Category {
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
+
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
+
+    public Category() {
+    }
+
+    public Category id(Long id) {
+        this.id = id;
+        return this;
+    }
+
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Category name(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @Pattern(regexp="^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$")
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Category category = (Category) o;
+        return Objects.equals(this.id, category.id) &&
+            Objects.equals(this.name, category.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Category {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/ModelApiResponse.java
new file mode 100644
index 00000000000..6e4b2b0834f
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -0,0 +1,161 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.*;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+import io.micronaut.core.annotation.*;
+import javax.annotation.Generated;
+
+/**
+ * Describes the result of uploading an image resource
+ */
+@ApiModel(description = "Describes the result of uploading an image resource")
+@JsonPropertyOrder({
+  ModelApiResponse.JSON_PROPERTY_CODE,
+  ModelApiResponse.JSON_PROPERTY_TYPE,
+  ModelApiResponse.JSON_PROPERTY_MESSAGE
+})
+@JsonTypeName("ApiResponse")
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Introspected
+public class ModelApiResponse {
+    public static final String JSON_PROPERTY_CODE = "code";
+    private Integer code;
+
+    public static final String JSON_PROPERTY_TYPE = "type";
+    private String type;
+
+    public static final String JSON_PROPERTY_MESSAGE = "message";
+    private String message;
+
+    public ModelApiResponse() {
+    }
+
+    public ModelApiResponse code(Integer code) {
+        this.code = code;
+        return this;
+    }
+
+    /**
+     * Get code
+     * @return code
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CODE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getCode() {
+        return code;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CODE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setCode(Integer code) {
+        this.code = code;
+    }
+
+    public ModelApiResponse type(String type) {
+        this.type = type;
+        return this;
+    }
+
+    /**
+     * Get type
+     * @return type
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_TYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getType() {
+        return type;
+    }
+
+    @JsonProperty(JSON_PROPERTY_TYPE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setType(String type) {
+        this.type = type;
+    }
+
+    public ModelApiResponse message(String message) {
+        this.message = message;
+        return this;
+    }
+
+    /**
+     * Get message
+     * @return message
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_MESSAGE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getMessage() {
+        return message;
+    }
+
+    @JsonProperty(JSON_PROPERTY_MESSAGE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setMessage(String message) {
+        this.message = message;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        ModelApiResponse _apiResponse = (ModelApiResponse) o;
+        return Objects.equals(this.code, _apiResponse.code) &&
+            Objects.equals(this.type, _apiResponse.type) &&
+            Objects.equals(this.message, _apiResponse.message);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(code, type, message);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class ModelApiResponse {\n");
+        sb.append("    code: ").append(toIndentedString(code)).append("\n");
+        sb.append("    type: ").append(toIndentedString(type)).append("\n");
+        sb.append("    message: ").append(toIndentedString(message)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Order.java
new file mode 100644
index 00000000000..2ef8aa82858
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Order.java
@@ -0,0 +1,285 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.time.LocalDateTime;
+import com.fasterxml.jackson.annotation.*;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+import io.micronaut.core.annotation.*;
+import javax.annotation.Generated;
+
+/**
+ * An order for a pets from the pet store
+ */
+@ApiModel(description = "An order for a pets from the pet store")
+@JsonPropertyOrder({
+  Order.JSON_PROPERTY_ID,
+  Order.JSON_PROPERTY_PET_ID,
+  Order.JSON_PROPERTY_QUANTITY,
+  Order.JSON_PROPERTY_SHIP_DATE,
+  Order.JSON_PROPERTY_STATUS,
+  Order.JSON_PROPERTY_COMPLETE
+})
+@JsonTypeName("Order")
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Introspected
+public class Order {
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
+
+    public static final String JSON_PROPERTY_PET_ID = "petId";
+    private Long petId;
+
+    public static final String JSON_PROPERTY_QUANTITY = "quantity";
+    private Integer quantity;
+
+    public static final String JSON_PROPERTY_SHIP_DATE = "shipDate";
+    private LocalDateTime shipDate;
+
+    /**
+     * Order Status
+     */
+    public enum StatusEnum {
+        PLACED("placed"),
+        APPROVED("approved"),
+        DELIVERED("delivered");
+
+        private String value;
+
+        StatusEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static StatusEnum fromValue(String value) {
+            for (StatusEnum b : StatusEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_STATUS = "status";
+    private StatusEnum status;
+
+    public static final String JSON_PROPERTY_COMPLETE = "complete";
+    private Boolean complete = false;
+
+    public Order() {
+    }
+
+    public Order id(Long id) {
+        this.id = id;
+        return this;
+    }
+
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Order petId(Long petId) {
+        this.petId = petId;
+        return this;
+    }
+
+    /**
+     * Get petId
+     * @return petId
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PET_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getPetId() {
+        return petId;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PET_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPetId(Long petId) {
+        this.petId = petId;
+    }
+
+    public Order quantity(Integer quantity) {
+        this.quantity = quantity;
+        return this;
+    }
+
+    /**
+     * Get quantity
+     * @return quantity
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_QUANTITY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getQuantity() {
+        return quantity;
+    }
+
+    @JsonProperty(JSON_PROPERTY_QUANTITY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setQuantity(Integer quantity) {
+        this.quantity = quantity;
+    }
+
+    public Order shipDate(LocalDateTime shipDate) {
+        this.shipDate = shipDate;
+        return this;
+    }
+
+    /**
+     * Get shipDate
+     * @return shipDate
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_SHIP_DATE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public LocalDateTime getShipDate() {
+        return shipDate;
+    }
+
+    @JsonProperty(JSON_PROPERTY_SHIP_DATE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXX")
+       public void setShipDate(LocalDateTime shipDate) {
+        this.shipDate = shipDate;
+    }
+
+    public Order status(StatusEnum status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * Order Status
+     * @return status
+     **/
+    @Nullable
+    @ApiModelProperty(value = "Order Status")
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public StatusEnum getStatus() {
+        return status;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setStatus(StatusEnum status) {
+        this.status = status;
+    }
+
+    public Order complete(Boolean complete) {
+        this.complete = complete;
+        return this;
+    }
+
+    /**
+     * Get complete
+     * @return complete
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_COMPLETE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Boolean getComplete() {
+        return complete;
+    }
+
+    @JsonProperty(JSON_PROPERTY_COMPLETE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setComplete(Boolean complete) {
+        this.complete = complete;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Order order = (Order) o;
+        return Objects.equals(this.id, order.id) &&
+            Objects.equals(this.petId, order.petId) &&
+            Objects.equals(this.quantity, order.quantity) &&
+            Objects.equals(this.shipDate, order.shipDate) &&
+            Objects.equals(this.status, order.status) &&
+            Objects.equals(this.complete, order.complete);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, petId, quantity, shipDate, status, complete);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Order {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
+        sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
+        sb.append("    shipDate: ").append(toIndentedString(shipDate)).append("\n");
+        sb.append("    status: ").append(toIndentedString(status)).append("\n");
+        sb.append("    complete: ").append(toIndentedString(complete)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Pet.java
new file mode 100644
index 00000000000..a2625f7d89a
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Pet.java
@@ -0,0 +1,302 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.model.Category;
+import org.openapitools.model.Tag;
+import com.fasterxml.jackson.annotation.*;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+import io.micronaut.core.annotation.*;
+import javax.annotation.Generated;
+
+/**
+ * A pet for sale in the pet store
+ */
+@ApiModel(description = "A pet for sale in the pet store")
+@JsonPropertyOrder({
+  Pet.JSON_PROPERTY_ID,
+  Pet.JSON_PROPERTY_CATEGORY,
+  Pet.JSON_PROPERTY_NAME,
+  Pet.JSON_PROPERTY_PHOTO_URLS,
+  Pet.JSON_PROPERTY_TAGS,
+  Pet.JSON_PROPERTY_STATUS
+})
+@JsonTypeName("Pet")
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Introspected
+public class Pet {
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
+
+    public static final String JSON_PROPERTY_CATEGORY = "category";
+    private Category category;
+
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
+
+    public static final String JSON_PROPERTY_PHOTO_URLS = "photoUrls";
+    private List<String> photoUrls = new ArrayList<String>();
+
+    public static final String JSON_PROPERTY_TAGS = "tags";
+    private List<Tag> tags = null;
+
+    /**
+     * pet status in the store
+     */
+    public enum StatusEnum {
+        AVAILABLE("available"),
+        PENDING("pending"),
+        SOLD("sold");
+
+        private String value;
+
+        StatusEnum(String value) {
+            this.value = value;
+        }
+
+        @JsonValue
+        public String getValue() {
+            return value;
+        }
+
+        @Override
+        public String toString() {
+            return String.valueOf(value);
+        }
+
+        @JsonCreator
+        public static StatusEnum fromValue(String value) {
+            for (StatusEnum b : StatusEnum.values()) {
+                if (b.value.equals(value)) {
+                    return b;
+                }
+            }
+            throw new IllegalArgumentException("Unexpected value '" + value + "'");
+        }
+    }
+    public static final String JSON_PROPERTY_STATUS = "status";
+    private StatusEnum status;
+
+    public Pet(String name, List<String> photoUrls) {
+        this.name = name;
+        this.photoUrls = photoUrls;
+    }
+
+    public Pet id(Long id) {
+        this.id = id;
+        return this;
+    }
+
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Pet category(Category category) {
+        this.category = category;
+        return this;
+    }
+
+    /**
+     * Get category
+     * @return category
+     **/
+    @Valid
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_CATEGORY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Category getCategory() {
+        return category;
+    }
+
+    @JsonProperty(JSON_PROPERTY_CATEGORY)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setCategory(Category category) {
+        this.category = category;
+    }
+
+    public Pet name(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get name
+     * @return name
+     **/
+    @NotNull
+    @ApiModelProperty(example = "doggie", required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    public Pet photoUrls(List<String> photoUrls) {
+        this.photoUrls = photoUrls;
+        return this;
+    }
+
+    public Pet addPhotoUrlsItem(String photoUrlsItem) {
+        this.photoUrls.add(photoUrlsItem);
+        return this;
+    }
+
+    /**
+     * Get photoUrls
+     * @return photoUrls
+     **/
+    @NotNull
+    @ApiModelProperty(required = true, value = "")
+    @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public List<String> getPhotoUrls() {
+        return photoUrls;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PHOTO_URLS)
+    @JsonInclude(value = JsonInclude.Include.ALWAYS)
+       public void setPhotoUrls(List<String> photoUrls) {
+        this.photoUrls = photoUrls;
+    }
+
+    public Pet tags(List<Tag> tags) {
+        this.tags = tags;
+        return this;
+    }
+
+    public Pet addTagsItem(Tag tagsItem) {
+        if (this.tags == null) {
+            this.tags = new ArrayList<Tag>();
+        }
+        this.tags.add(tagsItem);
+        return this;
+    }
+
+    /**
+     * Get tags
+     * @return tags
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_TAGS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public List<Tag> getTags() {
+        return tags;
+    }
+
+    @JsonProperty(JSON_PROPERTY_TAGS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setTags(List<Tag> tags) {
+        this.tags = tags;
+    }
+
+    public Pet status(StatusEnum status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * pet status in the store
+     * @return status
+     **/
+    @Nullable
+    @ApiModelProperty(value = "pet status in the store")
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public StatusEnum getStatus() {
+        return status;
+    }
+
+    @JsonProperty(JSON_PROPERTY_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setStatus(StatusEnum status) {
+        this.status = status;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Pet pet = (Pet) o;
+        return Objects.equals(this.id, pet.id) &&
+            Objects.equals(this.category, pet.category) &&
+            Objects.equals(this.name, pet.name) &&
+            Objects.equals(this.photoUrls, pet.photoUrls) &&
+            Objects.equals(this.tags, pet.tags) &&
+            Objects.equals(this.status, pet.status);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, category, name, photoUrls, tags, status);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Pet {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    category: ").append(toIndentedString(category)).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("    photoUrls: ").append(toIndentedString(photoUrls)).append("\n");
+        sb.append("    tags: ").append(toIndentedString(tags)).append("\n");
+        sb.append("    status: ").append(toIndentedString(status)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Tag.java
new file mode 100644
index 00000000000..830c5ded133
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/Tag.java
@@ -0,0 +1,132 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.*;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+import io.micronaut.core.annotation.*;
+import javax.annotation.Generated;
+
+/**
+ * A tag for a pet
+ */
+@ApiModel(description = "A tag for a pet")
+@JsonPropertyOrder({
+  Tag.JSON_PROPERTY_ID,
+  Tag.JSON_PROPERTY_NAME
+})
+@JsonTypeName("Tag")
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Introspected
+public class Tag {
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
+
+    public static final String JSON_PROPERTY_NAME = "name";
+    private String name;
+
+    public Tag() {
+    }
+
+    public Tag id(Long id) {
+        this.id = id;
+        return this;
+    }
+
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Tag name(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get name
+     * @return name
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getName() {
+        return name;
+    }
+
+    @JsonProperty(JSON_PROPERTY_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Tag tag = (Tag) o;
+        return Objects.equals(this.id, tag.id) &&
+            Objects.equals(this.name, tag.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class Tag {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    name: ").append(toIndentedString(name)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/User.java
new file mode 100644
index 00000000000..057e2f19d91
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/model/User.java
@@ -0,0 +1,306 @@
+/*
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import java.util.Arrays;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.*;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+import io.micronaut.core.annotation.*;
+import javax.annotation.Generated;
+
+/**
+ * A User who is purchasing from the pet store
+ */
+@ApiModel(description = "A User who is purchasing from the pet store")
+@JsonPropertyOrder({
+  User.JSON_PROPERTY_ID,
+  User.JSON_PROPERTY_USERNAME,
+  User.JSON_PROPERTY_FIRST_NAME,
+  User.JSON_PROPERTY_LAST_NAME,
+  User.JSON_PROPERTY_EMAIL,
+  User.JSON_PROPERTY_PASSWORD,
+  User.JSON_PROPERTY_PHONE,
+  User.JSON_PROPERTY_USER_STATUS
+})
+@JsonTypeName("User")
+@Generated(value="org.openapitools.codegen.languages.JavaMicronautServerCodegen")
+@Introspected
+public class User {
+    public static final String JSON_PROPERTY_ID = "id";
+    private Long id;
+
+    public static final String JSON_PROPERTY_USERNAME = "username";
+    private String username;
+
+    public static final String JSON_PROPERTY_FIRST_NAME = "firstName";
+    private String firstName;
+
+    public static final String JSON_PROPERTY_LAST_NAME = "lastName";
+    private String lastName;
+
+    public static final String JSON_PROPERTY_EMAIL = "email";
+    private String email;
+
+    public static final String JSON_PROPERTY_PASSWORD = "password";
+    private String password;
+
+    public static final String JSON_PROPERTY_PHONE = "phone";
+    private String phone;
+
+    public static final String JSON_PROPERTY_USER_STATUS = "userStatus";
+    private Integer userStatus;
+
+    public User() {
+    }
+
+    public User id(Long id) {
+        this.id = id;
+        return this;
+    }
+
+    /**
+     * Get id
+     * @return id
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Long getId() {
+        return id;
+    }
+
+    @JsonProperty(JSON_PROPERTY_ID)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setId(Long id) {
+        this.id = id;
+    }
+
+    public User username(String username) {
+        this.username = username;
+        return this;
+    }
+
+    /**
+     * Get username
+     * @return username
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_USERNAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getUsername() {
+        return username;
+    }
+
+    @JsonProperty(JSON_PROPERTY_USERNAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public User firstName(String firstName) {
+        this.firstName = firstName;
+        return this;
+    }
+
+    /**
+     * Get firstName
+     * @return firstName
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_FIRST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getFirstName() {
+        return firstName;
+    }
+
+    @JsonProperty(JSON_PROPERTY_FIRST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public User lastName(String lastName) {
+        this.lastName = lastName;
+        return this;
+    }
+
+    /**
+     * Get lastName
+     * @return lastName
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_LAST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getLastName() {
+        return lastName;
+    }
+
+    @JsonProperty(JSON_PROPERTY_LAST_NAME)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public User email(String email) {
+        this.email = email;
+        return this;
+    }
+
+    /**
+     * Get email
+     * @return email
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_EMAIL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getEmail() {
+        return email;
+    }
+
+    @JsonProperty(JSON_PROPERTY_EMAIL)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public User password(String password) {
+        this.password = password;
+        return this;
+    }
+
+    /**
+     * Get password
+     * @return password
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PASSWORD)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPassword() {
+        return password;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PASSWORD)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public User phone(String phone) {
+        this.phone = phone;
+        return this;
+    }
+
+    /**
+     * Get phone
+     * @return phone
+     **/
+    @Nullable
+    @ApiModelProperty(value = "")
+    @JsonProperty(JSON_PROPERTY_PHONE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public String getPhone() {
+        return phone;
+    }
+
+    @JsonProperty(JSON_PROPERTY_PHONE)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setPhone(String phone) {
+        this.phone = phone;
+    }
+
+    public User userStatus(Integer userStatus) {
+        this.userStatus = userStatus;
+        return this;
+    }
+
+    /**
+     * User Status
+     * @return userStatus
+     **/
+    @Nullable
+    @ApiModelProperty(value = "User Status")
+    @JsonProperty(JSON_PROPERTY_USER_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public Integer getUserStatus() {
+        return userStatus;
+    }
+
+    @JsonProperty(JSON_PROPERTY_USER_STATUS)
+    @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+       public void setUserStatus(Integer userStatus) {
+        this.userStatus = userStatus;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        User user = (User) o;
+        return Objects.equals(this.id, user.id) &&
+            Objects.equals(this.username, user.username) &&
+            Objects.equals(this.firstName, user.firstName) &&
+            Objects.equals(this.lastName, user.lastName) &&
+            Objects.equals(this.email, user.email) &&
+            Objects.equals(this.password, user.password) &&
+            Objects.equals(this.phone, user.phone) &&
+            Objects.equals(this.userStatus, user.userStatus);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, username, firstName, lastName, email, password, phone, userStatus);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("class User {\n");
+        sb.append("    id: ").append(toIndentedString(id)).append("\n");
+        sb.append("    username: ").append(toIndentedString(username)).append("\n");
+        sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
+        sb.append("    lastName: ").append(toIndentedString(lastName)).append("\n");
+        sb.append("    email: ").append(toIndentedString(email)).append("\n");
+        sb.append("    password: ").append(toIndentedString(password)).append("\n");
+        sb.append("    phone: ").append(toIndentedString(phone)).append("\n");
+        sb.append("    userStatus: ").append(toIndentedString(userStatus)).append("\n");
+        sb.append("}");
+        return sb.toString();
+    }
+
+    /**
+     * Convert the given object to string with each line indented by 4 spaces
+     * (except the first line).
+     */
+    private String toIndentedString(Object o) {
+        if (o == null) {
+            return "null";
+        }
+        return o.toString().replace("\n", "\n    ");
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/main/resources/application.yml b/samples/server/petstore/java-micronaut-server/src/main/resources/application.yml
new file mode 100644
index 00000000000..932949d0b39
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/resources/application.yml
@@ -0,0 +1,18 @@
+context-path: "/v2/"
+
+micronaut:
+    application:
+        name: petstore-micronaut-server
+    server:
+        port: 8080
+    security:
+        # authentication: bearer | cookie | session | idtoken
+
+jackson:
+    serialization:
+        writeEnumsUsingToString: true
+        writeDatesAsTimestamps: false
+    deserialization:
+        readEnumsUsingToString: true
+        failOnUnknownProperties: false
+        failOnInvalidSubtype: false
diff --git a/samples/server/petstore/java-micronaut-server/src/main/resources/logback.xml b/samples/server/petstore/java-micronaut-server/src/main/resources/logback.xml
new file mode 100644
index 00000000000..82218708264
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/main/resources/logback.xml
@@ -0,0 +1,15 @@
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <withJansi>false</withJansi>
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%cyan(%d{HH:mm:ss.SSS}) %gray([%thread]) %highlight(%-5level) %magenta(%logger{36}) - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/PetControllerSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/PetControllerSpec.groovy
new file mode 100644
index 00000000000..1a42ac43aa2
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/PetControllerSpec.groovy
@@ -0,0 +1,398 @@
+package org.openapitools.controller
+
+import io.micronaut.http.multipart.CompletedFileUpload
+import org.openapitools.model.ModelApiResponse
+import org.openapitools.model.Pet
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import io.micronaut.http.client.HttpClient
+import io.micronaut.http.client.annotation.Client
+import io.micronaut.runtime.server.EmbeddedServer
+import io.micronaut.http.HttpStatus
+import io.micronaut.http.HttpRequest
+import io.micronaut.http.MutableHttpRequest;
+import io.micronaut.http.HttpResponse
+import io.micronaut.http.MediaType
+import io.micronaut.http.uri.UriTemplate
+import io.micronaut.http.cookie.Cookie
+import io.micronaut.http.client.multipart.MultipartBody
+import io.micronaut.core.type.Argument
+import jakarta.inject.Inject
+import spock.lang.Specification
+import spock.lang.Ignore
+import reactor.core.publisher.Mono
+import java.io.File
+import java.io.FileReader
+
+
+/**
+ * Controller tests for PetController
+ */
+@MicronautTest
+class PetControllerSpec extends Specification {
+
+    @Inject
+    EmbeddedServer server
+
+    @Inject
+    @Client('${context-path}')
+    HttpClient client
+
+    @Inject
+    PetController controller
+
+    /**
+     * This test is used to validate the implementation of addPet() method
+     *
+     * The method should: Add a new pet to the store
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'addPet() method test'() {
+        given:
+        Pet pet = new Pet('doggie', ['example'])
+
+        when:
+        Pet result = controller.addPet(pet).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet' to the features of addPet() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'addPet() test with client through path /pet'() {
+        given:
+        Pet body = new Pet('doggie', ['example'])
+        var uri = UriTemplate.of('/pet').expand([:])
+        MutableHttpRequest request = HttpRequest.POST(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Pet.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of deletePet() method
+     *
+     * The method should: Deletes a pet
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'deletePet() method test'() {
+        given:
+        Long petId = 56L
+        String apiKey = 'example'
+
+        when:
+        controller.deletePet(petId, apiKey).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet/{petId}' to the features of deletePet() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'deletePet() test with client through path /pet/{petId}'() {
+        given:
+        var uri = UriTemplate.of('/pet/{petId}').expand([
+            // Fill in the path variables
+            'petId': 56L
+        ])
+        MutableHttpRequest request = HttpRequest.DELETE(uri)
+            .accept('application/json')
+            .header('api_key', 'example')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of findPetsByStatus() method
+     *
+     * The method should: Finds Pets by status
+     *
+     * Multiple status values can be provided with comma separated strings
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'findPetsByStatus() method test'() {
+        given:
+        List<String> status = ['available']
+
+        when:
+        List<Pet> result = controller.findPetsByStatus(status).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet/findByStatus' to the features of findPetsByStatus() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'findPetsByStatus() test with client through path /pet/findByStatus'() {
+        given:
+        var uri = UriTemplate.of('/pet/findByStatus').expand([:])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+        request.getParameters()
+            .add('status', ['available'].toString()) // The query parameter format should be csv
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Argument.of(List.class, Pet.class));
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of findPetsByTags() method
+     *
+     * The method should: Finds Pets by tags
+     *
+     * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'findPetsByTags() method test'() {
+        given:
+        List<String> tags = ['example']
+
+        when:
+        List<Pet> result = controller.findPetsByTags(tags).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet/findByTags' to the features of findPetsByTags() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'findPetsByTags() test with client through path /pet/findByTags'() {
+        given:
+        var uri = UriTemplate.of('/pet/findByTags').expand([:])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+        request.getParameters()
+            .add('tags', ['example'].toString()) // The query parameter format should be csv
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Argument.of(List.class, Pet.class));
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of getPetById() method
+     *
+     * The method should: Find pet by ID
+     *
+     * Returns a single pet
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'getPetById() method test'() {
+        given:
+        Long petId = 56L
+
+        when:
+        Pet result = controller.getPetById(petId).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet/{petId}' to the features of getPetById() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'getPetById() test with client through path /pet/{petId}'() {
+        given:
+        var uri = UriTemplate.of('/pet/{petId}').expand([
+            // Fill in the path variables
+            'petId': 56L
+        ])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Pet.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of updatePet() method
+     *
+     * The method should: Update an existing pet
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'updatePet() method test'() {
+        given:
+        Pet pet = new Pet('doggie', ['example'])
+
+        when:
+        Pet result = controller.updatePet(pet).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet' to the features of updatePet() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'updatePet() test with client through path /pet'() {
+        given:
+        Pet body = new Pet('doggie', ['example'])
+        var uri = UriTemplate.of('/pet').expand([:])
+        MutableHttpRequest request = HttpRequest.PUT(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Pet.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of updatePetWithForm() method
+     *
+     * The method should: Updates a pet in the store with form data
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'updatePetWithForm() method test'() {
+        given:
+        Long petId = 56L
+        String name = 'example'
+        String status = 'example'
+
+        when:
+        controller.updatePetWithForm(petId, name, status).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet/{petId}' to the features of updatePetWithForm() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'updatePetWithForm() test with client through path /pet/{petId}'() {
+        given:
+        var form = [
+            // Fill in the body form parameters
+            'name': 'example',
+            'status': 'example'
+        ]
+        var uri = UriTemplate.of('/pet/{petId}').expand([
+            // Fill in the path variables
+            'petId': 56L
+        ])
+        MutableHttpRequest request = HttpRequest.POST(uri, form)
+            .contentType('application/x-www-form-urlencoded')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of uploadFile() method
+     *
+     * The method should: uploads an image
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'uploadFile() method test'() {
+        given:
+        Long petId = 56L
+        String additionalMetadata = 'example'
+        CompletedFileUpload file = null
+
+        when:
+        ModelApiResponse result = controller.uploadFile(petId, additionalMetadata, file).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/pet/{petId}/uploadImage' to the features of uploadFile() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'uploadFile() test with client through path /pet/{petId}/uploadImage'() {
+        given:
+        var body = MultipartBody.builder() // Create multipart body
+            .addPart('additionalMetadata', 'example')
+            .addPart('file', 'filename', File.createTempFile('test', '.tmp'))
+            .build()
+        var uri = UriTemplate.of('/pet/{petId}/uploadImage').expand([
+            // Fill in the path variables
+            'petId': 56L
+        ])
+        MutableHttpRequest request = HttpRequest.POST(uri, body)
+            .contentType('multipart/form-data')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, ModelApiResponse.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/StoreControllerSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/StoreControllerSpec.groovy
new file mode 100644
index 00000000000..4af6ebfface
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/StoreControllerSpec.groovy
@@ -0,0 +1,210 @@
+package org.openapitools.controller
+
+import org.openapitools.model.Order
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import io.micronaut.http.client.HttpClient
+import io.micronaut.http.client.annotation.Client
+import io.micronaut.runtime.server.EmbeddedServer
+import io.micronaut.http.HttpStatus
+import io.micronaut.http.HttpRequest
+import io.micronaut.http.MutableHttpRequest;
+import io.micronaut.http.HttpResponse
+import io.micronaut.http.MediaType
+import io.micronaut.http.uri.UriTemplate
+import io.micronaut.http.cookie.Cookie
+import io.micronaut.http.client.multipart.MultipartBody
+import io.micronaut.core.type.Argument
+import jakarta.inject.Inject
+import spock.lang.Specification
+import spock.lang.Ignore
+import reactor.core.publisher.Mono
+import java.io.File
+import java.io.FileReader
+
+
+/**
+ * Controller tests for StoreController
+ */
+@MicronautTest
+class StoreControllerSpec extends Specification {
+
+    @Inject
+    EmbeddedServer server
+
+    @Inject
+    @Client('${context-path}')
+    HttpClient client
+
+    @Inject
+    StoreController controller
+
+    /**
+     * This test is used to validate the implementation of deleteOrder() method
+     *
+     * The method should: Delete purchase order by ID
+     *
+     * For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'deleteOrder() method test'() {
+        given:
+        String orderId = 'example'
+
+        when:
+        controller.deleteOrder(orderId).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/store/order/{orderId}' to the features of deleteOrder() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'deleteOrder() test with client through path /store/order/{orderId}'() {
+        given:
+        var uri = UriTemplate.of('/store/order/{orderId}').expand([
+            // Fill in the path variables
+            'orderId': 'example'
+        ])
+        MutableHttpRequest request = HttpRequest.DELETE(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of getInventory() method
+     *
+     * The method should: Returns pet inventories by status
+     *
+     * Returns a map of status codes to quantities
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'getInventory() method test'() {
+        given:
+
+        when:
+        Map<String, Integer> result = controller.getInventory().block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/store/inventory' to the features of getInventory() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'getInventory() test with client through path /store/inventory'() {
+        given:
+        var uri = UriTemplate.of('/store/inventory').expand([:])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Argument.of(Map.class, String.class, Integer.class));
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of getOrderById() method
+     *
+     * The method should: Find purchase order by ID
+     *
+     * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'getOrderById() method test'() {
+        given:
+        Long orderId = 56L
+
+        when:
+        Order result = controller.getOrderById(orderId).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/store/order/{orderId}' to the features of getOrderById() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'getOrderById() test with client through path /store/order/{orderId}'() {
+        given:
+        var uri = UriTemplate.of('/store/order/{orderId}').expand([
+            // Fill in the path variables
+            'orderId': 56L
+        ])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Order.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of placeOrder() method
+     *
+     * The method should: Place an order for a pet
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'placeOrder() method test'() {
+        given:
+        Order order = new Order()
+
+        when:
+        Order result = controller.placeOrder(order).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/store/order' to the features of placeOrder() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'placeOrder() test with client through path /store/order'() {
+        given:
+        Order body = new Order()
+        var uri = UriTemplate.of('/store/order').expand([:])
+        MutableHttpRequest request = HttpRequest.POST(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, Order.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/UserControllerSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/UserControllerSpec.groovy
new file mode 100644
index 00000000000..59940a3b5a5
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/UserControllerSpec.groovy
@@ -0,0 +1,381 @@
+package org.openapitools.controller
+
+import java.time.LocalDateTime
+import org.openapitools.model.User
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import io.micronaut.http.client.HttpClient
+import io.micronaut.http.client.annotation.Client
+import io.micronaut.runtime.server.EmbeddedServer
+import io.micronaut.http.HttpStatus
+import io.micronaut.http.HttpRequest
+import io.micronaut.http.MutableHttpRequest;
+import io.micronaut.http.HttpResponse
+import io.micronaut.http.MediaType
+import io.micronaut.http.uri.UriTemplate
+import io.micronaut.http.cookie.Cookie
+import io.micronaut.http.client.multipart.MultipartBody
+import io.micronaut.core.type.Argument
+import jakarta.inject.Inject
+import spock.lang.Specification
+import spock.lang.Ignore
+import reactor.core.publisher.Mono
+import java.io.File
+import java.io.FileReader
+
+
+/**
+ * Controller tests for UserController
+ */
+@MicronautTest
+class UserControllerSpec extends Specification {
+
+    @Inject
+    EmbeddedServer server
+
+    @Inject
+    @Client('${context-path}')
+    HttpClient client
+
+    @Inject
+    UserController controller
+
+    /**
+     * This test is used to validate the implementation of createUser() method
+     *
+     * The method should: Create user
+     *
+     * This can only be done by the logged in user.
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'createUser() method test'() {
+        given:
+        User user = new User()
+
+        when:
+        controller.createUser(user).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user' to the features of createUser() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'createUser() test with client through path /user'() {
+        given:
+        User body = new User()
+        var uri = UriTemplate.of('/user').expand([:])
+        MutableHttpRequest request = HttpRequest.POST(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of createUsersWithArrayInput() method
+     *
+     * The method should: Creates list of users with given input array
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'createUsersWithArrayInput() method test'() {
+        given:
+        List<User> user = []
+
+        when:
+        controller.createUsersWithArrayInput(user).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/createWithArray' to the features of createUsersWithArrayInput() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'createUsersWithArrayInput() test with client through path /user/createWithArray'() {
+        given:
+        List<User> body = []
+        var uri = UriTemplate.of('/user/createWithArray').expand([:])
+        MutableHttpRequest request = HttpRequest.POST(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of createUsersWithListInput() method
+     *
+     * The method should: Creates list of users with given input array
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'createUsersWithListInput() method test'() {
+        given:
+        List<User> user = []
+
+        when:
+        controller.createUsersWithListInput(user).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/createWithList' to the features of createUsersWithListInput() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'createUsersWithListInput() test with client through path /user/createWithList'() {
+        given:
+        List<User> body = []
+        var uri = UriTemplate.of('/user/createWithList').expand([:])
+        MutableHttpRequest request = HttpRequest.POST(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of deleteUser() method
+     *
+     * The method should: Delete user
+     *
+     * This can only be done by the logged in user.
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'deleteUser() method test'() {
+        given:
+        String username = 'example'
+
+        when:
+        controller.deleteUser(username).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/{username}' to the features of deleteUser() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'deleteUser() test with client through path /user/{username}'() {
+        given:
+        var uri = UriTemplate.of('/user/{username}').expand([
+            // Fill in the path variables
+            'username': 'example'
+        ])
+        MutableHttpRequest request = HttpRequest.DELETE(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of getUserByName() method
+     *
+     * The method should: Get user by user name
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'getUserByName() method test'() {
+        given:
+        String username = 'example'
+
+        when:
+        User result = controller.getUserByName(username).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/{username}' to the features of getUserByName() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'getUserByName() test with client through path /user/{username}'() {
+        given:
+        var uri = UriTemplate.of('/user/{username}').expand([
+            // Fill in the path variables
+            'username': 'example'
+        ])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, User.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of loginUser() method
+     *
+     * The method should: Logs user into the system
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'loginUser() method test'() {
+        given:
+        String username = 'example'
+        String password = 'example'
+
+        when:
+        String result = controller.loginUser(username, password).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/login' to the features of loginUser() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'loginUser() test with client through path /user/login'() {
+        given:
+        var uri = UriTemplate.of('/user/login').expand([:])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+        request.getParameters()
+            .add('username', 'example')
+            .add('password', 'example')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request, String.class);
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of logoutUser() method
+     *
+     * The method should: Logs out current logged in user session
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'logoutUser() method test'() {
+        given:
+
+        when:
+        controller.logoutUser().block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/logout' to the features of logoutUser() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'logoutUser() test with client through path /user/logout'() {
+        given:
+        var uri = UriTemplate.of('/user/logout').expand([:])
+        MutableHttpRequest request = HttpRequest.GET(uri)
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+    /**
+     * This test is used to validate the implementation of updateUser() method
+     *
+     * The method should: Updated user
+     *
+     * This can only be done by the logged in user.
+     *
+     * TODO fill in the parameters and test return value.
+     */
+    @Ignore("Not Implemented")
+    def 'updateUser() method test'() {
+        given:
+        String username = 'example'
+        User user = new User()
+
+        when:
+        controller.updateUser(username, user).block()
+
+        then:
+        true
+    }
+
+    /**
+     * This test is used to check that the api available to client through
+     * '/user/{username}' to the features of updateUser() works as desired.
+     *
+     * TODO fill in the request parameters and test response.
+     */
+    @Ignore("Not Implemented")
+    def 'updateUser() test with client through path /user/{username}'() {
+        given:
+        User body = new User()
+        var uri = UriTemplate.of('/user/{username}').expand([
+            // Fill in the path variables
+            'username': 'example'
+        ])
+        MutableHttpRequest request = HttpRequest.PUT(uri, body)
+            .contentType('application/json')
+            .accept('application/json')
+
+        when:
+        HttpResponse response = client.toBlocking().exchange(request); // To retrieve body you must specify required type (e.g. Map.class) as second argument 
+
+        then:
+        response.status() == HttpStatus.OK
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/CategorySpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/CategorySpec.groovy
new file mode 100644
index 00000000000..09ea5aea6bf
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/CategorySpec.groovy
@@ -0,0 +1,37 @@
+package org.openapitools.model
+
+import io.swagger.annotations.ApiModel
+import io.swagger.annotations.ApiModelProperty
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+
+/**
+ * Model tests for Category
+ */
+@MicronautTest
+public class CategorySpec extends Specification {
+    private final Category model = null
+
+    /**
+     * Model tests for Category
+     */
+    void 'Category test'() {
+        // TODO: test Category
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    void 'Category property id test'() {
+        // TODO: test id property of Category
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    void 'Category property name test'() {
+        // TODO: test name property of Category
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/ModelApiResponseSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/ModelApiResponseSpec.groovy
new file mode 100644
index 00000000000..11581554b2e
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/ModelApiResponseSpec.groovy
@@ -0,0 +1,44 @@
+package org.openapitools.model
+
+import io.swagger.annotations.ApiModel
+import io.swagger.annotations.ApiModelProperty
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+
+/**
+ * Model tests for ModelApiResponse
+ */
+@MicronautTest
+public class ModelApiResponseSpec extends Specification {
+    private final ModelApiResponse model = null
+
+    /**
+     * Model tests for ModelApiResponse
+     */
+    void 'ModelApiResponse test'() {
+        // TODO: test ModelApiResponse
+    }
+
+    /**
+     * Test the property 'code'
+     */
+    void 'ModelApiResponse property code test'() {
+        // TODO: test code property of ModelApiResponse
+    }
+
+    /**
+     * Test the property 'type'
+     */
+    void 'ModelApiResponse property type test'() {
+        // TODO: test type property of ModelApiResponse
+    }
+
+    /**
+     * Test the property 'message'
+     */
+    void 'ModelApiResponse property message test'() {
+        // TODO: test message property of ModelApiResponse
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/OrderSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/OrderSpec.groovy
new file mode 100644
index 00000000000..f49fd81a9a2
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/OrderSpec.groovy
@@ -0,0 +1,66 @@
+package org.openapitools.model
+
+import io.swagger.annotations.ApiModel
+import io.swagger.annotations.ApiModelProperty
+import java.time.LocalDateTime
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+
+/**
+ * Model tests for Order
+ */
+@MicronautTest
+public class OrderSpec extends Specification {
+    private final Order model = null
+
+    /**
+     * Model tests for Order
+     */
+    void 'Order test'() {
+        // TODO: test Order
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    void 'Order property id test'() {
+        // TODO: test id property of Order
+    }
+
+    /**
+     * Test the property 'petId'
+     */
+    void 'Order property petId test'() {
+        // TODO: test petId property of Order
+    }
+
+    /**
+     * Test the property 'quantity'
+     */
+    void 'Order property quantity test'() {
+        // TODO: test quantity property of Order
+    }
+
+    /**
+     * Test the property 'shipDate'
+     */
+    void 'Order property shipDate test'() {
+        // TODO: test shipDate property of Order
+    }
+
+    /**
+     * Test the property 'status'
+     */
+    void 'Order property status test'() {
+        // TODO: test status property of Order
+    }
+
+    /**
+     * Test the property 'complete'
+     */
+    void 'Order property complete test'() {
+        // TODO: test complete property of Order
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/PetSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/PetSpec.groovy
new file mode 100644
index 00000000000..87de485ec4b
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/PetSpec.groovy
@@ -0,0 +1,69 @@
+package org.openapitools.model
+
+import io.swagger.annotations.ApiModel
+import io.swagger.annotations.ApiModelProperty
+import java.util.ArrayList
+import java.util.List
+import org.openapitools.model.Category
+import org.openapitools.model.Tag
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+
+/**
+ * Model tests for Pet
+ */
+@MicronautTest
+public class PetSpec extends Specification {
+    private final Pet model = null
+
+    /**
+     * Model tests for Pet
+     */
+    void 'Pet test'() {
+        // TODO: test Pet
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    void 'Pet property id test'() {
+        // TODO: test id property of Pet
+    }
+
+    /**
+     * Test the property 'category'
+     */
+    void 'Pet property category test'() {
+        // TODO: test category property of Pet
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    void 'Pet property name test'() {
+        // TODO: test name property of Pet
+    }
+
+    /**
+     * Test the property 'photoUrls'
+     */
+    void 'Pet property photoUrls test'() {
+        // TODO: test photoUrls property of Pet
+    }
+
+    /**
+     * Test the property 'tags'
+     */
+    void 'Pet property tags test'() {
+        // TODO: test tags property of Pet
+    }
+
+    /**
+     * Test the property 'status'
+     */
+    void 'Pet property status test'() {
+        // TODO: test status property of Pet
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/TagSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/TagSpec.groovy
new file mode 100644
index 00000000000..23208c3464b
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/TagSpec.groovy
@@ -0,0 +1,37 @@
+package org.openapitools.model
+
+import io.swagger.annotations.ApiModel
+import io.swagger.annotations.ApiModelProperty
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+
+/**
+ * Model tests for Tag
+ */
+@MicronautTest
+public class TagSpec extends Specification {
+    private final Tag model = null
+
+    /**
+     * Model tests for Tag
+     */
+    void 'Tag test'() {
+        // TODO: test Tag
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    void 'Tag property id test'() {
+        // TODO: test id property of Tag
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    void 'Tag property name test'() {
+        // TODO: test name property of Tag
+    }
+
+}
diff --git a/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/UserSpec.groovy b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/UserSpec.groovy
new file mode 100644
index 00000000000..c3060a006bb
--- /dev/null
+++ b/samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/model/UserSpec.groovy
@@ -0,0 +1,79 @@
+package org.openapitools.model
+
+import io.swagger.annotations.ApiModel
+import io.swagger.annotations.ApiModelProperty
+import io.micronaut.test.extensions.spock.annotation.MicronautTest
+import spock.lang.Specification
+import jakarta.inject.Inject
+
+/**
+ * Model tests for User
+ */
+@MicronautTest
+public class UserSpec extends Specification {
+    private final User model = null
+
+    /**
+     * Model tests for User
+     */
+    void 'User test'() {
+        // TODO: test User
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    void 'User property id test'() {
+        // TODO: test id property of User
+    }
+
+    /**
+     * Test the property 'username'
+     */
+    void 'User property username test'() {
+        // TODO: test username property of User
+    }
+
+    /**
+     * Test the property 'firstName'
+     */
+    void 'User property firstName test'() {
+        // TODO: test firstName property of User
+    }
+
+    /**
+     * Test the property 'lastName'
+     */
+    void 'User property lastName test'() {
+        // TODO: test lastName property of User
+    }
+
+    /**
+     * Test the property 'email'
+     */
+    void 'User property email test'() {
+        // TODO: test email property of User
+    }
+
+    /**
+     * Test the property 'password'
+     */
+    void 'User property password test'() {
+        // TODO: test password property of User
+    }
+
+    /**
+     * Test the property 'phone'
+     */
+    void 'User property phone test'() {
+        // TODO: test phone property of User
+    }
+
+    /**
+     * Test the property 'userStatus'
+     */
+    void 'User property userStatus test'() {
+        // TODO: test userStatus property of User
+    }
+
+}
diff --git a/samples/server/petstore/java-msf4j/.openapi-generator/FILES b/samples/server/petstore/java-msf4j/.openapi-generator/FILES
index 70eb02f4675..d2655934c4e 100644
--- a/samples/server/petstore/java-msf4j/.openapi-generator/FILES
+++ b/samples/server/petstore/java-msf4j/.openapi-generator/FILES
@@ -52,6 +52,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApi.java
index 0fe26a5422f..cb1d0fa0f7c 100644
--- a/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApi.java
@@ -185,10 +185,10 @@ public class PetApi  {
     public Response uploadFile(@ApiParam(value = "ID of pet to update",required=true) @PathParam("petId") Long petId
 ,@ApiParam(value = "Additional data to pass to server")@FormDataParam("additionalMetadata")  String additionalMetadata
 ,
-            @FormDataParam("file") InputStream fileInputStream,
-            @FormDataParam("file") FileInfo fileDetail
+            @FormDataParam("file") InputStream _fileInputStream,
+            @FormDataParam("file") FileInfo _fileDetail
 )
     throws NotFoundException {
-        return delegate.uploadFile(petId,additionalMetadata,fileInputStream, fileDetail);
+        return delegate.uploadFile(petId,additionalMetadata,_fileInputStream, _fileDetail);
     }
 }
diff --git a/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApiService.java
index 8c72b4fb375..d7d9d94b095 100644
--- a/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/api/PetApiService.java
@@ -40,6 +40,6 @@ public abstract class PetApiService {
  ) throws NotFoundException;
     public abstract Response uploadFile(Long petId
  ,String additionalMetadata
- ,InputStream fileInputStream, FileInfo fileDetail
+ ,InputStream _fileInputStream, FileInfo _fileDetail
  ) throws NotFoundException;
 }
diff --git a/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index 74119a1e004..a2a61f5f8f2 100644
--- a/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/java-msf4j/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -7,6 +7,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 
 /**
  * FileSchemaTestClass
@@ -14,37 +15,37 @@ import java.util.List;
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaMSF4JServerCodegen")
 public class FileSchemaTestClass   {
   @JsonProperty("file")
-  private java.io.File file;
+  private ModelFile _file;
 
   @JsonProperty("files")
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @ApiModelProperty(value = "")
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -55,11 +56,11 @@ public class FileSchemaTestClass   {
    * @return files
   **/
   @ApiModelProperty(value = "")
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -73,13 +74,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
@@ -87,7 +88,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/java-msf4j/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/java-msf4j/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index 75b9c0aa3c2..2137f73cd4e 100644
--- a/samples/server/petstore/java-msf4j/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/java-msf4j/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -69,7 +69,7 @@ public class PetApiServiceImpl extends PetApiService {
     @Override
     public Response uploadFile(Long petId
 , String additionalMetadata
-, InputStream fileInputStream, FileInfo fileDetail
+, InputStream _fileInputStream, FileInfo _fileDetail
  ) throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
diff --git a/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiController.java b/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiController.java
index 0a8b8fbd481..0ce290ed50b 100644
--- a/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiController.java
@@ -147,9 +147,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImp.java
index 7acfca34952..99652aa88ba 100644
--- a/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImpInterface.java
index 63401e9cc39..a6863a4d9bc 100644
--- a/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-api-package-override/app/com/puppies/store/apis/PetApiControllerImpInterface.java
@@ -133,12 +133,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -150,6 +150,6 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-play-framework-async/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-async/app/controllers/PetApiController.java
index 6396438fdf6..6044ef02c14 100644
--- a/samples/server/petstore/java-play-framework-async/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-async/app/controllers/PetApiController.java
@@ -150,9 +150,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImp.java
index 13e4a2b5a30..b865f46dffd 100644
--- a/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImp.java
@@ -61,7 +61,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public CompletionStage<ModelApiResponse> uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public CompletionStage<ModelApiResponse> uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return CompletableFuture.supplyAsync(() -> {
            return new ModelApiResponse();
diff --git a/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImpInterface.java
index 7b4e0f35639..73f7d4c870b 100644
--- a/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-async/app/controllers/PetApiControllerImpInterface.java
@@ -176,12 +176,12 @@ return stage.thenApply(obj -> {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public CompletionStage<Result> uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public CompletionStage<Result> uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return CompletableFuture.supplyAsync(play.mvc.Results::unauthorized);
         }
 
-        CompletionStage<ModelApiResponse> stage = uploadFile(request, petId, additionalMetadata, file).thenApply(obj -> { 
+        CompletionStage<ModelApiResponse> stage = uploadFile(request, petId, additionalMetadata, _file).thenApply(obj -> { 
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -197,6 +197,6 @@ return stage.thenApply(obj -> {
 
     }
 
-    public abstract CompletionStage<ModelApiResponse> uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract CompletionStage<ModelApiResponse> uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-play-framework-controller-only/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-controller-only/app/controllers/PetApiController.java
index 4fe0a2d6584..762150e4c63 100644
--- a/samples/server/petstore/java-play-framework-controller-only/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-controller-only/app/controllers/PetApiController.java
@@ -145,8 +145,8 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
         return ok();
     }
 
diff --git a/samples/server/petstore/java-play-framework-fake-endpoints/.openapi-generator/FILES b/samples/server/petstore/java-play-framework-fake-endpoints/.openapi-generator/FILES
index 237025d138a..5edfb3d0fc8 100644
--- a/samples/server/petstore/java-play-framework-fake-endpoints/.openapi-generator/FILES
+++ b/samples/server/petstore/java-play-framework-fake-endpoints/.openapi-generator/FILES
@@ -33,6 +33,8 @@ app/apimodels/MapTest.java
 app/apimodels/MixedPropertiesAndAdditionalPropertiesClass.java
 app/apimodels/Model200Response.java
 app/apimodels/ModelApiResponse.java
+app/apimodels/ModelFile.java
+app/apimodels/ModelList.java
 app/apimodels/ModelReturn.java
 app/apimodels/Name.java
 app/apimodels/NumberOnly.java
diff --git a/samples/server/petstore/java-play-framework-fake-endpoints/app/apimodels/FileSchemaTestClass.java b/samples/server/petstore/java-play-framework-fake-endpoints/app/apimodels/FileSchemaTestClass.java
index 03d1c1b0cce..4d3fd25cbed 100644
--- a/samples/server/petstore/java-play-framework-fake-endpoints/app/apimodels/FileSchemaTestClass.java
+++ b/samples/server/petstore/java-play-framework-fake-endpoints/app/apimodels/FileSchemaTestClass.java
@@ -1,5 +1,6 @@
 package apimodels;
 
+import apimodels.ModelFile;
 import java.util.ArrayList;
 import java.util.List;
 import com.fasterxml.jackson.annotation.*;
@@ -16,36 +17,36 @@ public class FileSchemaTestClass   {
   @JsonProperty("file")
   @Valid
 
-  private java.io.File file;
+  private ModelFile _file;
 
   @JsonProperty("files")
   @Valid
 
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
    /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (files == null) {
       files = new ArrayList<>();
     }
@@ -57,11 +58,11 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   **/
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -75,13 +76,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(file, fileSchemaTestClass.file) &&
+    return Objects.equals(_file, fileSchemaTestClass._file) &&
         Objects.equals(files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @SuppressWarnings("StringBufferReplaceableByString")
@@ -90,7 +91,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiController.java
index bb4a1022b0c..53c3ed9ba10 100644
--- a/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiController.java
@@ -148,9 +148,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
     @ApiAction
diff --git a/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImp.java
index 5da6c573a05..d1c85f1e7fd 100644
--- a/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImp.java
@@ -54,7 +54,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImpInterface.java
index 2819023e720..e9ab7c1397f 100644
--- a/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-fake-endpoints/app/controllers/PetApiControllerImpInterface.java
@@ -134,12 +134,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -151,7 +151,7 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
     public Result uploadFileWithRequiredFileHttp(Http.Request request, Long petId, Http.MultipartFormData.FilePart<TemporaryFile> requiredFile, String additionalMetadata) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
diff --git a/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiController.java
index f152c0c8178..79ed73fe05b 100644
--- a/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiController.java
@@ -137,9 +137,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImp.java
index 97e0abb5c38..5447e8f4905 100644
--- a/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImp.java
@@ -52,7 +52,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImpInterface.java
index d98f6ae3fd1..fb0ce944e80 100644
--- a/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-no-bean-validation/app/controllers/PetApiControllerImpInterface.java
@@ -112,18 +112,18 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
         JsonNode result = mapper.valueToTree(obj);
 
         return ok(result);
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiController.java
index aef17a8b24d..37ce74ba03d 100644
--- a/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiController.java
@@ -148,9 +148,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImp.java
index 5860d0493bf..5a45819711e 100644
--- a/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file)  {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file)  {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImpInterface.java
index 846514e5ad1..34df059ba94 100644
--- a/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-no-exception-handling/app/controllers/PetApiControllerImpInterface.java
@@ -133,12 +133,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) ;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file)  {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file)  {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -150,6 +150,6 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) ;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) ;
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiController.java
index c5a43c3bd58..c1c5ab17768 100644
--- a/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiController.java
@@ -213,13 +213,13 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
                 if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = imp.uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = imp.uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
diff --git a/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiControllerImp.java
index 7bd3e84b514..4f6506d0512 100644
--- a/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-no-interface/app/controllers/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp  {
     }
 
     
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiController.java
index e5dba405def..4e5f0308bfa 100644
--- a/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiController.java
@@ -147,9 +147,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImp.java
index fc0ad8257d8..dc95e25205a 100644
--- a/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImpInterface.java
index 4ce570904a7..1173b55dbb7 100644
--- a/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-no-nullable/app/controllers/PetApiControllerImpInterface.java
@@ -133,12 +133,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -150,6 +150,6 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiController.java
index e5dba405def..4e5f0308bfa 100644
--- a/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiController.java
@@ -147,9 +147,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImp.java
index fc0ad8257d8..dc95e25205a 100644
--- a/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImpInterface.java
index 4ce570904a7..1173b55dbb7 100644
--- a/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-no-swagger-ui/app/controllers/PetApiControllerImpInterface.java
@@ -133,12 +133,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -150,6 +150,6 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiController.java
index 84dae7c46aa..2808f038dfd 100644
--- a/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiController.java
@@ -146,9 +146,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImp.java
index fc0ad8257d8..dc95e25205a 100644
--- a/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImpInterface.java
index 4ce570904a7..1173b55dbb7 100644
--- a/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework-no-wrap-calls/app/controllers/PetApiControllerImpInterface.java
@@ -133,12 +133,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -150,6 +150,6 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-play-framework/app/controllers/PetApiController.java b/samples/server/petstore/java-play-framework/app/controllers/PetApiController.java
index e5dba405def..4e5f0308bfa 100644
--- a/samples/server/petstore/java-play-framework/app/controllers/PetApiController.java
+++ b/samples/server/petstore/java-play-framework/app/controllers/PetApiController.java
@@ -147,9 +147,9 @@ public class PetApiController extends Controller {
         } else {
             additionalMetadata = null;
         }
-        Http.MultipartFormData<TemporaryFile> bodyfile = request.body().asMultipartFormData();
-        Http.MultipartFormData.FilePart<TemporaryFile> file = bodyfile.getFile("file");
-        return imp.uploadFileHttp(request, petId, additionalMetadata, file);
+        Http.MultipartFormData<TemporaryFile> body_file = request.body().asMultipartFormData();
+        Http.MultipartFormData.FilePart<TemporaryFile> _file = body_file.getFile("file");
+        return imp.uploadFileHttp(request, petId, additionalMetadata, _file);
     }
 
 }
diff --git a/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImp.java b/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImp.java
index fc0ad8257d8..dc95e25205a 100644
--- a/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImp.java
+++ b/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImp.java
@@ -53,7 +53,7 @@ public class PetApiControllerImp extends PetApiControllerImpInterface {
     }
 
     @Override
-    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         //Do your magic!!!
         return new ModelApiResponse();
     }
diff --git a/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImpInterface.java b/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImpInterface.java
index 4ce570904a7..1173b55dbb7 100644
--- a/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImpInterface.java
+++ b/samples/server/petstore/java-play-framework/app/controllers/PetApiControllerImpInterface.java
@@ -133,12 +133,12 @@ public abstract class PetApiControllerImpInterface {
 
     public abstract void updatePetWithForm(Http.Request request, Long petId, String name, String status) throws Exception;
 
-    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception {
+    public Result uploadFileHttp(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception {
         if (!securityAPIUtils.isRequestTokenValid(request, "petstore_auth")) {
             return unauthorized();
         }
 
-        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, file);
+        ModelApiResponse obj = uploadFile(request, petId, additionalMetadata, _file);
 
         if (configuration.getBoolean("useOutputBeanValidation")) {
             OpenAPIUtils.validate(obj);
@@ -150,6 +150,6 @@ public abstract class PetApiControllerImpInterface {
 
     }
 
-    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> file) throws Exception;
+    public abstract ModelApiResponse uploadFile(Http.Request request, Long petId, String additionalMetadata, Http.MultipartFormData.FilePart<TemporaryFile> _file) throws Exception;
 
 }
diff --git a/samples/server/petstore/java-undertow/pom.xml b/samples/server/petstore/java-undertow/pom.xml
index 53ccffba47d..3e18815a1d1 100644
--- a/samples/server/petstore/java-undertow/pom.xml
+++ b/samples/server/petstore/java-undertow/pom.xml
@@ -27,11 +27,11 @@
         <version.encoder>1.2</version.encoder>
         <version.metrics>3.1.2</version.metrics>
         <version.logback>1.2.0</version.logback>
-        <version.junit>4.13</version.junit>
+        <version.junit>4.13.1</version.junit>
         <version.mockito>2.1.0-beta.124</version.mockito>
-        <version.undertow>1.4.0.Final</version.undertow>
+        <version.undertow>2.1.6.Final</version.undertow>
         <version.jsonpath>2.2.0</version.jsonpath>
-        <version.httpclient>4.5.2</version.httpclient>
+        <version.httpclient>4.5.13</version.httpclient>
         <version.httpasyncclient>4.1.2</version.httpasyncclient>
         <version.swagger>1.5.10</version.swagger>
     </properties>
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApi.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApi.java
index 9e5985d930f..75bcc071e26 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApi.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApi.java
@@ -20,5 +20,5 @@ public interface PetApi  {
     Future<ApiResponse<Pet>> getPetById(Long petId);
     Future<ApiResponse<Pet>> updatePet(Pet pet);
     Future<ApiResponse<Void>> updatePetWithForm(Long petId, JsonObject formBody);
-    Future<ApiResponse<ModelApiResponse>> uploadFile(Long petId, FileUpload file);
+    Future<ApiResponse<ModelApiResponse>> uploadFile(Long petId, FileUpload _file);
 }
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java
index ef7ac405e2e..6262ce1cb3f 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java
@@ -212,12 +212,12 @@ public class PetApiHandler {
         RequestParameters requestParameters = routingContext.get(ValidationHandler.REQUEST_CONTEXT_KEY);
 
         Long petId = requestParameters.pathParameter("petId") != null ? requestParameters.pathParameter("petId").getLong() : null;
-        FileUpload file = routingContext.fileUploads().iterator().next();
+        FileUpload _file = routingContext.fileUploads().iterator().next();
 
         logger.debug("Parameter petId is {}", petId);
-        logger.debug("Parameter file is {}", file);
+        logger.debug("Parameter _file is {}", _file);
 
-        api.uploadFile(petId, file)
+        api.uploadFile(petId, _file)
             .onSuccess(apiResponse -> {
                 routingContext.response().setStatusCode(apiResponse.getStatusCode());
                 if (apiResponse.hasData()) {
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiImpl.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiImpl.java
index 8660f228e31..f06dfd3ae29 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiImpl.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiImpl.java
@@ -44,7 +44,7 @@ public class PetApiImpl implements PetApi {
         return Future.failedFuture(new HttpStatusException(501));
     }
 
-    public Future<ApiResponse<ModelApiResponse>> uploadFile(Long petId, FileUpload file) {
+    public Future<ApiResponse<ModelApiResponse>> uploadFile(Long petId, FileUpload _file) {
         return Future.failedFuture(new HttpStatusException(501));
     }
 
diff --git a/samples/server/petstore/jaxrs-cxf-annotated-base-path/pom.xml b/samples/server/petstore/jaxrs-cxf-annotated-base-path/pom.xml
index bb88fe50d58..9643f632d71 100644
--- a/samples/server/petstore/jaxrs-cxf-annotated-base-path/pom.xml
+++ b/samples/server/petstore/jaxrs-cxf-annotated-base-path/pom.xml
@@ -201,7 +201,7 @@
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <swagger-core-version>1.5.22</swagger-core-version>
     <jetty-version>9.2.9.v20150224</jetty-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
     <beanvalidation-version>2.0.2</beanvalidation-version>
     <cxf-version>3.3.0</cxf-version>
diff --git a/samples/server/petstore/jaxrs-cxf-annotated-base-path/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-cxf-annotated-base-path/src/gen/java/org/openapitools/api/PetApi.java
index 2b7d9285c69..6d16c4d9d8f 100644
--- a/samples/server/petstore/jaxrs-cxf-annotated-base-path/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-cxf-annotated-base-path/src/gen/java/org/openapitools/api/PetApi.java
@@ -137,5 +137,5 @@ public interface PetApi  {
     @ApiOperation(value = "uploads an image", tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail);
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail);
 }
diff --git a/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApi.java
index 4c53024ee79..7a6eb967684 100644
--- a/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApi.java
@@ -158,7 +158,7 @@ public class PetApi  {
          }, tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public Response uploadFile(@ApiParam(value = "ID of pet to update",required=true) @PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file", required = false) InputStream fileInputStream, @Multipart(value = "file" , required = false) Attachment fileDetail) {
-        return delegate.uploadFile(petId, additionalMetadata, fileInputStream, fileDetail, securityContext);
+    public Response uploadFile(@ApiParam(value = "ID of pet to update",required=true) @PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file", required = false) InputStream _fileInputStream, @Multipart(value = "file" , required = false) Attachment _fileDetail) {
+        return delegate.uploadFile(petId, additionalMetadata, _fileInputStream, _fileDetail, securityContext);
     }
 }
diff --git a/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApiService.java
index a6baa2c9977..9b859d24f59 100644
--- a/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs-cxf-cdi/src/gen/java/org/openapitools/api/PetApiService.java
@@ -26,5 +26,5 @@ public interface PetApiService {
       public Response getPetById(Long petId, SecurityContext securityContext);
       public Response updatePet(Pet body, SecurityContext securityContext);
       public Response updatePetWithForm(Long petId, String name, String status, SecurityContext securityContext);
-      public Response uploadFile(Long petId, String additionalMetadata, InputStream fileInputStream, Attachment fileDetail, SecurityContext securityContext);
+      public Response uploadFile(Long petId, String additionalMetadata, InputStream _fileInputStream, Attachment _fileDetail, SecurityContext securityContext);
 }
diff --git a/samples/server/petstore/jaxrs-cxf-cdi/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-cdi/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index f841e096bf5..b67a47dc56f 100644
--- a/samples/server/petstore/jaxrs-cxf-cdi/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-cdi/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -56,7 +56,7 @@ public class PetApiServiceImpl implements PetApiService {
       return Response.ok().entity("magic!").build();
   }
       @Override
-      public Response uploadFile(Long petId, String additionalMetadata, InputStream fileInputStream, Attachment fileDetail, SecurityContext securityContext) {
+      public Response uploadFile(Long petId, String additionalMetadata, InputStream _fileInputStream, Attachment _fileDetail, SecurityContext securityContext) {
       // do some magic!
       return Response.ok().entity("magic!").build();
   }
diff --git a/samples/server/petstore/jaxrs-cxf-non-spring-app/pom.xml b/samples/server/petstore/jaxrs-cxf-non-spring-app/pom.xml
index 37380542275..07106478d1f 100644
--- a/samples/server/petstore/jaxrs-cxf-non-spring-app/pom.xml
+++ b/samples/server/petstore/jaxrs-cxf-non-spring-app/pom.xml
@@ -201,7 +201,7 @@
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <swagger-core-version>1.5.22</swagger-core-version>
     <jetty-version>9.2.9.v20150224</jetty-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
     <beanvalidation-version>2.0.2</beanvalidation-version>
     <cxf-version>3.3.0</cxf-version>
diff --git a/samples/server/petstore/jaxrs-cxf-non-spring-app/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-cxf-non-spring-app/src/gen/java/org/openapitools/api/PetApi.java
index 30f67a8ca95..02eb80853a2 100644
--- a/samples/server/petstore/jaxrs-cxf-non-spring-app/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-cxf-non-spring-app/src/gen/java/org/openapitools/api/PetApi.java
@@ -137,5 +137,5 @@ public interface PetApi  {
     @ApiOperation(value = "uploads an image", tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail);
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail);
 }
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/FILES b/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/FILES
index 0fc7cbf70c7..f6258368299 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/FILES
@@ -40,6 +40,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/VERSION b/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/VERSION
index 6555596f931..0984c4c1ad2 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/VERSION
+++ b/samples/server/petstore/jaxrs-cxf-test-data/.openapi-generator/VERSION
@@ -1 +1 @@
-5.2.0-SNAPSHOT
\ No newline at end of file
+5.4.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/pom.xml b/samples/server/petstore/jaxrs-cxf-test-data/pom.xml
index f17dde84bad..f42f6e5455e 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/pom.xml
+++ b/samples/server/petstore/jaxrs-cxf-test-data/pom.xml
@@ -43,8 +43,8 @@
         </configuration>
         <dependencies>
           <dependency>
-              <groupId>javax.validation</groupId>
-              <artifactId>validation-api</artifactId>
+              <groupId>jakarta.validation</groupId>
+              <artifactId>jakarta.validation-api</artifactId>
               <version>${beanvalidation-version}</version>
           </dependency>
         </dependencies>
@@ -87,7 +87,7 @@
           </execution>
         </executions>
       </plugin>
-      
+
       <!-- build WAR file -->
       <plugin>
         <artifactId>maven-war-plugin</artifactId>
@@ -127,8 +127,8 @@
     </dependency>
     <!-- Bean Validation API support -->
     <dependency>
-      <groupId>javax.validation</groupId>
-      <artifactId>validation-api</artifactId>
+      <groupId>jakarta.validation</groupId>
+      <artifactId>jakarta.validation-api</artifactId>
       <scope>provided</scope>
     </dependency>
     <!-- CXF Client -->
@@ -200,7 +200,7 @@
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-web</artifactId>
-    </dependency>    
+    </dependency>
     <!-- Spring Boot dependencies for integration tests -->
     <!--dependency>
       <groupId>org.springframework.boot</groupId>
@@ -233,7 +233,7 @@
     <dependency>
       <groupId>org.openapitools</groupId>
       <artifactId>openapi-generator</artifactId>
-      <version>5.2.0-SNAPSHOT</version>
+      <version>5.4.0-SNAPSHOT</version>
     </dependency>
   </dependencies>
   <repositories>
@@ -258,7 +258,7 @@
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <swagger-core-version>1.5.18</swagger-core-version>
     <jetty-version>9.2.9.v20150224</jetty-version>
-    <beanvalidation-version>1.1.0.Final</beanvalidation-version>
+    <beanvalidation-version>2.0.2</beanvalidation-version>
     <cxf-version>3.3.0</cxf-version>
     <jackson-jaxrs-version>2.9.9</jackson-jaxrs-version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/AnotherFakeApi.java
index 0b2ba1f3576..badac196113 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/AnotherFakeApi.java
@@ -46,4 +46,3 @@ public interface AnotherFakeApi  {
         @ApiResponse(code = 200, message = "successful operation", response = Client.class) })
     public Client call123testSpecialTags(@Valid Client body);
 }
-
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeApi.java
index cb420e40efa..fc4cb1ebee5 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeApi.java
@@ -8,6 +8,7 @@ import org.openapitools.model.FileSchemaTestClass;
 import java.util.List;
 import org.joda.time.LocalDate;
 import java.util.Map;
+import org.openapitools.model.ModelFile;
 import org.openapitools.model.OuterComposite;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
@@ -103,7 +104,7 @@ public interface FakeApi  {
     @ApiOperation(value = "", tags={ "fake" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "Success") })
-    public void testBodyWithQueryParams(@QueryParam("query") @NotNull  String query, @Valid User body);
+    public void testBodyWithQueryParams(@QueryParam("query") @NotNull String query, @Valid User body);
 
     /**
      * To test \&quot;client\&quot; model
@@ -148,7 +149,7 @@ public interface FakeApi  {
     @ApiResponses(value = { 
         @ApiResponse(code = 400, message = "Invalid request"),
         @ApiResponse(code = 404, message = "Not found") })
-    public void testEnumParameters(@HeaderParam("enum_header_string_array")   List<String> enumHeaderStringArray, @HeaderParam("enum_header_string")   String enumHeaderString, @QueryParam("enum_query_string_array")  List<String> enumQueryStringArray, @QueryParam("enum_query_string")  @DefaultValue("-efg") String enumQueryString, @QueryParam("enum_query_integer")  Integer enumQueryInteger, @QueryParam("enum_query_double")  Double enumQueryDouble, @Multipart(value = "enum_form_string_array", required = false)  List<String> enumFormStringArray, @Multipart(value = "enum_form_string", required = false)  String enumFormString);
+    public void testEnumParameters(@HeaderParam("enum_header_string_array")  List<String> enumHeaderStringArray, @HeaderParam("enum_header_string")  String enumHeaderString, @QueryParam("enum_query_string_array") List<String> enumQueryStringArray, @QueryParam("enum_query_string") @DefaultValue("-efg") String enumQueryString, @QueryParam("enum_query_integer") Integer enumQueryInteger, @QueryParam("enum_query_double") Double enumQueryDouble, @Multipart(value = "enum_form_string_array", required = false)  List<String> enumFormStringArray, @Multipart(value = "enum_form_string", required = false)  String enumFormString);
 
     /**
      * Fake endpoint to test group parameters (optional)
@@ -161,7 +162,7 @@ public interface FakeApi  {
     @ApiOperation(value = "Fake endpoint to test group parameters (optional)", tags={ "fake" })
     @ApiResponses(value = { 
         @ApiResponse(code = 400, message = "Someting wrong") })
-    public void testGroupParameters(@QueryParam("required_string_group") @NotNull  Integer requiredStringGroup, @HeaderParam("required_boolean_group")  @NotNull  Boolean requiredBooleanGroup, @QueryParam("required_int64_group") @NotNull  Long requiredInt64Group, @QueryParam("string_group")  Integer stringGroup, @HeaderParam("boolean_group")   Boolean booleanGroup, @QueryParam("int64_group")  Long int64Group);
+    public void testGroupParameters(@QueryParam("required_string_group") @NotNull Integer requiredStringGroup, @HeaderParam("required_boolean_group")  @NotNull Boolean requiredBooleanGroup, @QueryParam("required_int64_group") @NotNull Long requiredInt64Group, @QueryParam("string_group") Integer stringGroup, @HeaderParam("boolean_group")  Boolean booleanGroup, @QueryParam("int64_group") Long int64Group);
 
     /**
      * test inline additionalProperties
@@ -192,6 +193,5 @@ public interface FakeApi  {
     @ApiOperation(value = "", tags={ "fake" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "Success") })
-    public void testQueryParameterCollectionFormat(@QueryParam("pipe") @NotNull  List<String> pipe, @QueryParam("ioutil") @NotNull  List<String> ioutil, @QueryParam("http") @NotNull  List<String> http, @QueryParam("url") @NotNull  List<String> url, @QueryParam("context") @NotNull  List<String> context);
+    public void testQueryParameterCollectionFormat(@QueryParam("pipe") @NotNull List<String> pipe, @QueryParam("ioutil") @NotNull List<String> ioutil, @QueryParam("http") @NotNull List<String> http, @QueryParam("url") @NotNull List<String> url, @QueryParam("context") @NotNull List<String> context);
 }
-
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeClassnameTags123Api.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeClassnameTags123Api.java
index 2a2205d2926..f8a46e66cd6 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeClassnameTags123Api.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/FakeClassnameTags123Api.java
@@ -46,4 +46,3 @@ public interface FakeClassnameTags123Api  {
         @ApiResponse(code = 200, message = "successful operation", response = Client.class) })
     public Client testClassname(@Valid Client body);
 }
-
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/PetApi.java
index a78ab96f161..875ed2d0267 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/PetApi.java
@@ -58,7 +58,7 @@ public interface PetApi  {
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation"),
         @ApiResponse(code = 400, message = "Invalid pet value") })
-    public void deletePet(@PathParam("petId") Long petId, @HeaderParam("api_key")   String apiKey);
+    public void deletePet(@PathParam("petId") Long petId, @HeaderParam("api_key")  String apiKey);
 
     /**
      * Finds Pets by status
@@ -73,7 +73,7 @@ public interface PetApi  {
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = Pet.class, responseContainer = "List"),
         @ApiResponse(code = 400, message = "Invalid status value") })
-    public List<Pet> findPetsByStatus(@QueryParam("status") @NotNull  List<String> status);
+    public List<Pet> findPetsByStatus(@QueryParam("status") @NotNull List<String> status);
 
     /**
      * Finds Pets by tags
@@ -88,7 +88,7 @@ public interface PetApi  {
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = Pet.class, responseContainer = "Set"),
         @ApiResponse(code = 400, message = "Invalid tag value") })
-    public Set<Pet> findPetsByTags(@QueryParam("tags") @NotNull  Set<String> tags);
+    public Set<Pet> findPetsByTags(@QueryParam("tags") @NotNull Set<String> tags);
 
     /**
      * Find pet by ID
@@ -144,7 +144,7 @@ public interface PetApi  {
     @ApiOperation(value = "uploads an image", tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail);
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail);
 
     /**
      * uploads an image (required)
@@ -159,4 +159,3 @@ public interface PetApi  {
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
     public ModelApiResponse uploadFileWithRequiredFile(@PathParam("petId") Long petId,  @Multipart(value = "requiredFile" ) Attachment requiredFileDetail, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata);
 }
-
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/StoreApi.java
index ac0a02f63fc..cb4bbe78aad 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/StoreApi.java
@@ -89,4 +89,3 @@ public interface StoreApi  {
         @ApiResponse(code = 400, message = "Invalid Order") })
     public Order placeOrder(@Valid Order body);
 }
-
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/UserApi.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/UserApi.java
index a90c5ac242a..759badc417c 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/api/UserApi.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import org.openapitools.model.User;
@@ -108,7 +109,7 @@ public interface UserApi  {
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = String.class),
         @ApiResponse(code = 400, message = "Invalid username/password supplied") })
-    public String loginUser(@QueryParam("username") @NotNull  String username, @QueryParam("password") @NotNull  String password);
+    public String loginUser(@QueryParam("username") @NotNull String username, @QueryParam("password") @NotNull String password);
 
     /**
      * Logs out current logged in user session
@@ -136,4 +137,3 @@ public interface UserApi  {
         @ApiResponse(code = 404, message = "User not found") })
     public void updateUser(@PathParam("username") String username, @Valid User body);
 }
-
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 72cb3aca1f6..c1d4b3d903f 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java
index 4cf7da90c84..2fd3e00c4fb 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -34,7 +27,7 @@ public class AdditionalPropertiesArray extends HashMap<String, List> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index b0d2a52121d..ea7308bdf40 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
index 621f2043841..37a48a09e27 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -8,13 +8,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -70,7 +63,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapString</code> property.
    */
-  public void setMapString(Map<String, String> mapString) {
+ public void setMapString(Map<String, String> mapString) {
     this.mapString = mapString;
   }
 
@@ -102,7 +95,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapNumber</code> property.
    */
-  public void setMapNumber(Map<String, BigDecimal> mapNumber) {
+ public void setMapNumber(Map<String, BigDecimal> mapNumber) {
     this.mapNumber = mapNumber;
   }
 
@@ -134,7 +127,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapInteger</code> property.
    */
-  public void setMapInteger(Map<String, Integer> mapInteger) {
+ public void setMapInteger(Map<String, Integer> mapInteger) {
     this.mapInteger = mapInteger;
   }
 
@@ -166,7 +159,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapBoolean</code> property.
    */
-  public void setMapBoolean(Map<String, Boolean> mapBoolean) {
+ public void setMapBoolean(Map<String, Boolean> mapBoolean) {
     this.mapBoolean = mapBoolean;
   }
 
@@ -198,7 +191,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapArrayInteger</code> property.
    */
-  public void setMapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
+ public void setMapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
     this.mapArrayInteger = mapArrayInteger;
   }
 
@@ -230,7 +223,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapArrayAnytype</code> property.
    */
-  public void setMapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
+ public void setMapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
     this.mapArrayAnytype = mapArrayAnytype;
   }
 
@@ -262,7 +255,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapMapString</code> property.
    */
-  public void setMapMapString(Map<String, Map<String, String>> mapMapString) {
+ public void setMapMapString(Map<String, Map<String, String>> mapMapString) {
     this.mapMapString = mapMapString;
   }
 
@@ -294,7 +287,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>mapMapAnytype</code> property.
    */
-  public void setMapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
+ public void setMapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
     this.mapMapAnytype = mapMapAnytype;
   }
 
@@ -326,7 +319,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>anytype1</code> property.
    */
-  public void setAnytype1(Object anytype1) {
+ public void setAnytype1(Object anytype1) {
     this.anytype1 = anytype1;
   }
 
@@ -350,7 +343,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>anytype2</code> property.
    */
-  public void setAnytype2(Object anytype2) {
+ public void setAnytype2(Object anytype2) {
     this.anytype2 = anytype2;
   }
 
@@ -374,7 +367,7 @@ public class AdditionalPropertiesClass  {
   /**
    * Sets the <code>anytype3</code> property.
    */
-  public void setAnytype3(Object anytype3) {
+ public void setAnytype3(Object anytype3) {
     this.anytype3 = anytype3;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 820fd4a7566..d60a4749cf9 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 817f3b66ad5..5f57ca61b26 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -34,7 +27,7 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java
index 7578677a3a8..3e611db1e41 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class AdditionalPropertiesObject extends HashMap<String, Map> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java
index 37cd2281471..e7a00d4d453 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class AdditionalPropertiesString extends HashMap<String, String> {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Animal.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Animal.java
index aff505263a5..8941bea3897 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Animal.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -43,7 +36,7 @@ public class Animal  {
   /**
    * Sets the <code>className</code> property.
    */
-  public void setClassName(String className) {
+ public void setClassName(String className) {
     this.className = className;
   }
 
@@ -67,7 +60,7 @@ public class Animal  {
   /**
    * Sets the <code>color</code> property.
    */
-  public void setColor(String color) {
+ public void setColor(String color) {
     this.color = color;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AnimalFarm.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AnimalFarm.java
index bdbcc12651f..109ba683502 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AnimalFarm.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/AnimalFarm.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 39fee1c7459..1e7c179b8d4 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -35,7 +28,7 @@ public class ArrayOfArrayOfNumberOnly  {
   /**
    * Sets the <code>arrayArrayNumber</code> property.
    */
-  public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
+ public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
index ecca797b8a1..43545d844ec 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -35,7 +28,7 @@ public class ArrayOfNumberOnly  {
   /**
    * Sets the <code>arrayNumber</code> property.
    */
-  public void setArrayNumber(List<BigDecimal> arrayNumber) {
+ public void setArrayNumber(List<BigDecimal> arrayNumber) {
     this.arrayNumber = arrayNumber;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayTest.java
index 581e9175975..7c7828df423 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ArrayTest.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -42,7 +35,7 @@ public class ArrayTest  {
   /**
    * Sets the <code>arrayOfString</code> property.
    */
-  public void setArrayOfString(List<String> arrayOfString) {
+ public void setArrayOfString(List<String> arrayOfString) {
     this.arrayOfString = arrayOfString;
   }
 
@@ -74,7 +67,7 @@ public class ArrayTest  {
   /**
    * Sets the <code>arrayArrayOfInteger</code> property.
    */
-  public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
+ public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
     this.arrayArrayOfInteger = arrayArrayOfInteger;
   }
 
@@ -106,7 +99,7 @@ public class ArrayTest  {
   /**
    * Sets the <code>arrayArrayOfModel</code> property.
    */
-  public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
+ public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCat.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCat.java
index 11d450e49d6..fc95ae92e64 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCat.java
@@ -8,27 +8,18 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 
 public class BigCat extends Cat {
   
-@XmlType(name="KindEnum")
-@XmlEnum(String.class)
 public enum KindEnum {
 
-    @XmlEnumValue("lions") @JsonProperty("lions") LIONS(String.valueOf("lions")), 
-    @XmlEnumValue("tigers") @JsonProperty("tigers") TIGERS(String.valueOf("tigers")), 
-    @XmlEnumValue("leopards") @JsonProperty("leopards") LEOPARDS(String.valueOf("leopards")), 
-    @XmlEnumValue("jaguars") @JsonProperty("jaguars") JAGUARS(String.valueOf("jaguars"));
+    @JsonProperty("lions") LIONS(String.valueOf("lions")),
+    @JsonProperty("tigers") TIGERS(String.valueOf("tigers")),
+    @JsonProperty("leopards") LEOPARDS(String.valueOf("leopards")),
+    @JsonProperty("jaguars") JAGUARS(String.valueOf("jaguars"));
 
     private String value;
 
@@ -69,7 +60,7 @@ public enum KindEnum {
   /**
    * Sets the <code>kind</code> property.
    */
-  public void setKind(KindEnum kind) {
+ public void setKind(KindEnum kind) {
     this.kind = kind;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCatAllOf.java
index c9d95b07dd4..5013641cb31 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/BigCatAllOf.java
@@ -6,27 +6,18 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 
 public class BigCatAllOf  {
   
-@XmlType(name="KindEnum")
-@XmlEnum(String.class)
 public enum KindEnum {
 
-    @XmlEnumValue("lions") @JsonProperty("lions") LIONS(String.valueOf("lions")), 
-    @XmlEnumValue("tigers") @JsonProperty("tigers") TIGERS(String.valueOf("tigers")), 
-    @XmlEnumValue("leopards") @JsonProperty("leopards") LEOPARDS(String.valueOf("leopards")), 
-    @XmlEnumValue("jaguars") @JsonProperty("jaguars") JAGUARS(String.valueOf("jaguars"));
+    @JsonProperty("lions") LIONS(String.valueOf("lions")),
+    @JsonProperty("tigers") TIGERS(String.valueOf("tigers")),
+    @JsonProperty("leopards") LEOPARDS(String.valueOf("leopards")),
+    @JsonProperty("jaguars") JAGUARS(String.valueOf("jaguars"));
 
     private String value;
 
@@ -67,7 +58,7 @@ public enum KindEnum {
   /**
    * Sets the <code>kind</code> property.
    */
-  public void setKind(KindEnum kind) {
+ public void setKind(KindEnum kind) {
     this.kind = kind;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Capitalization.java
index 6977e1929dc..7daf25fc151 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Capitalization.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -49,7 +42,7 @@ public class Capitalization  {
   /**
    * Sets the <code>smallCamel</code> property.
    */
-  public void setSmallCamel(String smallCamel) {
+ public void setSmallCamel(String smallCamel) {
     this.smallCamel = smallCamel;
   }
 
@@ -73,7 +66,7 @@ public class Capitalization  {
   /**
    * Sets the <code>capitalCamel</code> property.
    */
-  public void setCapitalCamel(String capitalCamel) {
+ public void setCapitalCamel(String capitalCamel) {
     this.capitalCamel = capitalCamel;
   }
 
@@ -97,7 +90,7 @@ public class Capitalization  {
   /**
    * Sets the <code>smallSnake</code> property.
    */
-  public void setSmallSnake(String smallSnake) {
+ public void setSmallSnake(String smallSnake) {
     this.smallSnake = smallSnake;
   }
 
@@ -121,7 +114,7 @@ public class Capitalization  {
   /**
    * Sets the <code>capitalSnake</code> property.
    */
-  public void setCapitalSnake(String capitalSnake) {
+ public void setCapitalSnake(String capitalSnake) {
     this.capitalSnake = capitalSnake;
   }
 
@@ -145,7 +138,7 @@ public class Capitalization  {
   /**
    * Sets the <code>scAETHFlowPoints</code> property.
    */
-  public void setScAETHFlowPoints(String scAETHFlowPoints) {
+ public void setScAETHFlowPoints(String scAETHFlowPoints) {
     this.scAETHFlowPoints = scAETHFlowPoints;
   }
 
@@ -169,7 +162,7 @@ public class Capitalization  {
   /**
    * Sets the <code>ATT_NAME</code> property.
    */
-  public void setATTNAME(String ATT_NAME) {
+ public void setATTNAME(String ATT_NAME) {
     this.ATT_NAME = ATT_NAME;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Cat.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Cat.java
index ade4d390ed2..4b01acfec7d 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Cat.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class Cat extends Animal {
   /**
    * Sets the <code>declawed</code> property.
    */
-  public void setDeclawed(Boolean declawed) {
+ public void setDeclawed(Boolean declawed) {
     this.declawed = declawed;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/CatAllOf.java
index 57fbc0ed39f..a5429c99537 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/CatAllOf.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -31,7 +24,7 @@ public class CatAllOf  {
   /**
    * Sets the <code>declawed</code> property.
    */
-  public void setDeclawed(Boolean declawed) {
+ public void setDeclawed(Boolean declawed) {
     this.declawed = declawed;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Category.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Category.java
index 64632432302..135a4aef97a 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Category.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -34,7 +27,7 @@ public class Category  {
   /**
    * Sets the <code>id</code> property.
    */
-  public void setId(Long id) {
+ public void setId(Long id) {
     this.id = id;
   }
 
@@ -59,7 +52,7 @@ public class Category  {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ClassModel.java
index 96d71cc4794..8a6af0e1b1c 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ClassModel.java
@@ -5,13 +5,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -37,7 +30,7 @@ public class ClassModel  {
   /**
    * Sets the <code>propertyClass</code> property.
    */
-  public void setPropertyClass(String propertyClass) {
+ public void setPropertyClass(String propertyClass) {
     this.propertyClass = propertyClass;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Client.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Client.java
index a38efc5fbf2..72c016206fe 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Client.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -31,7 +24,7 @@ public class Client  {
   /**
    * Sets the <code>client</code> property.
    */
-  public void setClient(String client) {
+ public void setClient(String client) {
     this.client = client;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Dog.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Dog.java
index 08426424f2b..67d8fe5ef88 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Dog.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class Dog extends Animal {
   /**
    * Sets the <code>breed</code> property.
    */
-  public void setBreed(String breed) {
+ public void setBreed(String breed) {
     this.breed = breed;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/DogAllOf.java
index fcdff3616d5..c0d1aa500c7 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/DogAllOf.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -31,7 +24,7 @@ public class DogAllOf  {
   /**
    * Sets the <code>breed</code> property.
    */
-  public void setBreed(String breed) {
+ public void setBreed(String breed) {
     this.breed = breed;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumArrays.java
index 0671e7b13f8..2ebeea81137 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumArrays.java
@@ -8,25 +8,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 
 public class EnumArrays  {
   
-@XmlType(name="JustSymbolEnum")
-@XmlEnum(String.class)
 public enum JustSymbolEnum {
 
-    @XmlEnumValue(">=") @JsonProperty(">=") GREATER_THAN_OR_EQUAL_TO(String.valueOf(">=")), 
-    @XmlEnumValue("$") @JsonProperty("$") DOLLAR(String.valueOf("$"));
+    @JsonProperty(">=") GREATER_THAN_OR_EQUAL_TO(String.valueOf(">=")),
+    @JsonProperty("$") DOLLAR(String.valueOf("$"));
 
     private String value;
 
@@ -56,12 +47,10 @@ public enum JustSymbolEnum {
   @ApiModelProperty(value = "")
   private JustSymbolEnum justSymbol;
 
-@XmlType(name="ArrayEnumEnum")
-@XmlEnum(String.class)
 public enum ArrayEnumEnum {
 
-    @XmlEnumValue("fish") @JsonProperty("fish") FISH(String.valueOf("fish")), 
-    @XmlEnumValue("crab") @JsonProperty("crab") CRAB(String.valueOf("crab"));
+    @JsonProperty("fish") FISH(String.valueOf("fish")),
+    @JsonProperty("crab") CRAB(String.valueOf("crab"));
 
     private String value;
 
@@ -102,7 +91,7 @@ public enum ArrayEnumEnum {
   /**
    * Sets the <code>justSymbol</code> property.
    */
-  public void setJustSymbol(JustSymbolEnum justSymbol) {
+ public void setJustSymbol(JustSymbolEnum justSymbol) {
     this.justSymbol = justSymbol;
   }
 
@@ -126,7 +115,7 @@ public enum ArrayEnumEnum {
   /**
    * Sets the <code>arrayEnum</code> property.
    */
-  public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
+ public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
     this.arrayEnum = arrayEnum;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumClass.java
index 3c9c8ea8409..aac72d02020 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumClass.java
@@ -38,6 +38,6 @@ public enum EnumClass {
     }
     throw new IllegalArgumentException("Unexpected value '" + value + "'");
   }
-  
+
 }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumTest.java
index cee18f27aab..3f0ae1b7bc5 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/EnumTest.java
@@ -7,26 +7,17 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
 
 public class EnumTest  {
   
-@XmlType(name="EnumStringEnum")
-@XmlEnum(String.class)
 public enum EnumStringEnum {
 
-    @XmlEnumValue("UPPER") @JsonProperty("UPPER") UPPER(String.valueOf("UPPER")), 
-    @XmlEnumValue("lower") @JsonProperty("lower") LOWER(String.valueOf("lower")), 
-    @XmlEnumValue("") @JsonProperty("") EMPTY(String.valueOf(""));
+    @JsonProperty("UPPER") UPPER(String.valueOf("UPPER")),
+    @JsonProperty("lower") LOWER(String.valueOf("lower")),
+    @JsonProperty("") EMPTY(String.valueOf(""));
 
     private String value;
 
@@ -56,13 +47,11 @@ public enum EnumStringEnum {
   @ApiModelProperty(value = "")
   private EnumStringEnum enumString;
 
-@XmlType(name="EnumStringRequiredEnum")
-@XmlEnum(String.class)
 public enum EnumStringRequiredEnum {
 
-    @XmlEnumValue("UPPER") @JsonProperty("UPPER") UPPER(String.valueOf("UPPER")), 
-    @XmlEnumValue("lower") @JsonProperty("lower") LOWER(String.valueOf("lower")), 
-    @XmlEnumValue("") @JsonProperty("") EMPTY(String.valueOf(""));
+    @JsonProperty("UPPER") UPPER(String.valueOf("UPPER")),
+    @JsonProperty("lower") LOWER(String.valueOf("lower")),
+    @JsonProperty("") EMPTY(String.valueOf(""));
 
     private String value;
 
@@ -92,12 +81,10 @@ public enum EnumStringRequiredEnum {
   @ApiModelProperty(required = true, value = "")
   private EnumStringRequiredEnum enumStringRequired;
 
-@XmlType(name="EnumIntegerEnum")
-@XmlEnum(Integer.class)
 public enum EnumIntegerEnum {
 
-    @XmlEnumValue("1") @JsonProperty("1") NUMBER_1(Integer.valueOf(1)), 
-    @XmlEnumValue("-1") @JsonProperty("-1") NUMBER_MINUS_1(Integer.valueOf(-1));
+    @JsonProperty("1") NUMBER_1(Integer.valueOf(1)),
+    @JsonProperty("-1") NUMBER_MINUS_1(Integer.valueOf(-1));
 
     private Integer value;
 
@@ -127,12 +114,10 @@ public enum EnumIntegerEnum {
   @ApiModelProperty(value = "")
   private EnumIntegerEnum enumInteger;
 
-@XmlType(name="EnumNumberEnum")
-@XmlEnum(Double.class)
 public enum EnumNumberEnum {
 
-    @XmlEnumValue("1.1") @JsonProperty("1.1") NUMBER_1_DOT_1(Double.valueOf(1.1)), 
-    @XmlEnumValue("-1.2") @JsonProperty("-1.2") NUMBER_MINUS_1_DOT_2(Double.valueOf(-1.2));
+    @JsonProperty("1.1") NUMBER_1_DOT_1(Double.valueOf(1.1)),
+    @JsonProperty("-1.2") NUMBER_MINUS_1_DOT_2(Double.valueOf(-1.2));
 
     private Double value;
 
@@ -177,7 +162,7 @@ public enum EnumNumberEnum {
   /**
    * Sets the <code>enumString</code> property.
    */
-  public void setEnumString(EnumStringEnum enumString) {
+ public void setEnumString(EnumStringEnum enumString) {
     this.enumString = enumString;
   }
 
@@ -202,7 +187,7 @@ public enum EnumNumberEnum {
   /**
    * Sets the <code>enumStringRequired</code> property.
    */
-  public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
+ public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
     this.enumStringRequired = enumStringRequired;
   }
 
@@ -226,7 +211,7 @@ public enum EnumNumberEnum {
   /**
    * Sets the <code>enumInteger</code> property.
    */
-  public void setEnumInteger(EnumIntegerEnum enumInteger) {
+ public void setEnumInteger(EnumIntegerEnum enumInteger) {
     this.enumInteger = enumInteger;
   }
 
@@ -250,7 +235,7 @@ public enum EnumNumberEnum {
   /**
    * Sets the <code>enumNumber</code> property.
    */
-  public void setEnumNumber(EnumNumberEnum enumNumber) {
+ public void setEnumNumber(EnumNumberEnum enumNumber) {
     this.enumNumber = enumNumber;
   }
 
@@ -274,7 +259,7 @@ public enum EnumNumberEnum {
   /**
    * Sets the <code>outerEnum</code> property.
    */
-  public void setOuterEnum(OuterEnum outerEnum) {
+ public void setOuterEnum(OuterEnum outerEnum) {
     this.outerEnum = outerEnum;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index 431423e3d2b..3a908d1ccdd 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -2,17 +2,11 @@ package org.openapitools.model;
 
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -21,32 +15,32 @@ public class FileSchemaTestClass  {
   
   @ApiModelProperty(value = "")
   @Valid
-  private java.io.File file;
+  private ModelFile _file;
 
   @ApiModelProperty(value = "")
   @Valid
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
  /**
-  * Get file
-  * @return file
+  * Get _file
+  * @return _file
   */
   @JsonProperty("file")
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
   /**
-   * Sets the <code>file</code> property.
+   * Sets the <code>_file</code> property.
    */
-  public void setFile(java.io.File file) {
-    this.file = file;
+ public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
   /**
-   * Sets the <code>file</code> property.
+   * Sets the <code>_file</code> property.
    */
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
@@ -55,21 +49,21 @@ public class FileSchemaTestClass  {
   * @return files
   */
   @JsonProperty("files")
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
   /**
    * Sets the <code>files</code> property.
    */
-  public void setFiles(List<java.io.File> files) {
+ public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
   /**
    * Sets the <code>files</code> property.
    */
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
@@ -77,7 +71,7 @@ public class FileSchemaTestClass  {
   /**
    * Adds a new item to the <code>files</code> list.
    */
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     this.files.add(filesItem);
     return this;
   }
@@ -88,7 +82,7 @@ public class FileSchemaTestClass  {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FormatTest.java
index 560ef7288ef..c83a4b540f6 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/FormatTest.java
@@ -9,13 +9,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -81,7 +74,7 @@ public class FormatTest  {
   /**
    * Sets the <code>integer</code> property.
    */
-  public void setInteger(Integer integer) {
+ public void setInteger(Integer integer) {
     this.integer = integer;
   }
 
@@ -107,7 +100,7 @@ public class FormatTest  {
   /**
    * Sets the <code>int32</code> property.
    */
-  public void setInt32(Integer int32) {
+ public void setInt32(Integer int32) {
     this.int32 = int32;
   }
 
@@ -131,7 +124,7 @@ public class FormatTest  {
   /**
    * Sets the <code>int64</code> property.
    */
-  public void setInt64(Long int64) {
+ public void setInt64(Long int64) {
     this.int64 = int64;
   }
 
@@ -158,7 +151,7 @@ public class FormatTest  {
   /**
    * Sets the <code>number</code> property.
    */
-  public void setNumber(BigDecimal number) {
+ public void setNumber(BigDecimal number) {
     this.number = number;
   }
 
@@ -184,7 +177,7 @@ public class FormatTest  {
   /**
    * Sets the <code>_float</code> property.
    */
-  public void setFloat(Float _float) {
+ public void setFloat(Float _float) {
     this._float = _float;
   }
 
@@ -210,7 +203,7 @@ public class FormatTest  {
   /**
    * Sets the <code>_double</code> property.
    */
-  public void setDouble(Double _double) {
+ public void setDouble(Double _double) {
     this._double = _double;
   }
 
@@ -234,7 +227,7 @@ public class FormatTest  {
   /**
    * Sets the <code>string</code> property.
    */
-  public void setString(String string) {
+ public void setString(String string) {
     this.string = string;
   }
 
@@ -259,7 +252,7 @@ public class FormatTest  {
   /**
    * Sets the <code>_byte</code> property.
    */
-  public void setByte(byte[] _byte) {
+ public void setByte(byte[] _byte) {
     this._byte = _byte;
   }
 
@@ -283,7 +276,7 @@ public class FormatTest  {
   /**
    * Sets the <code>binary</code> property.
    */
-  public void setBinary(File binary) {
+ public void setBinary(File binary) {
     this.binary = binary;
   }
 
@@ -308,7 +301,7 @@ public class FormatTest  {
   /**
    * Sets the <code>date</code> property.
    */
-  public void setDate(LocalDate date) {
+ public void setDate(LocalDate date) {
     this.date = date;
   }
 
@@ -332,7 +325,7 @@ public class FormatTest  {
   /**
    * Sets the <code>dateTime</code> property.
    */
-  public void setDateTime(Date dateTime) {
+ public void setDateTime(Date dateTime) {
     this.dateTime = dateTime;
   }
 
@@ -356,7 +349,7 @@ public class FormatTest  {
   /**
    * Sets the <code>uuid</code> property.
    */
-  public void setUuid(UUID uuid) {
+ public void setUuid(UUID uuid) {
     this.uuid = uuid;
   }
 
@@ -381,7 +374,7 @@ public class FormatTest  {
   /**
    * Sets the <code>password</code> property.
    */
-  public void setPassword(String password) {
+ public void setPassword(String password) {
     this.password = password;
   }
 
@@ -405,7 +398,7 @@ public class FormatTest  {
   /**
    * Sets the <code>bigDecimal</code> property.
    */
-  public void setBigDecimal(BigDecimal bigDecimal) {
+ public void setBigDecimal(BigDecimal bigDecimal) {
     this.bigDecimal = bigDecimal;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java
index 4e790d70b6f..30939047b1a 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -35,7 +28,7 @@ public class HasOnlyReadOnly  {
    * Sets the <code>bar</code> property.
    * <br><em>N.B. <code>bar</code> is <b>read only</b>; client code should not call this method</em>.
    */
-  public void setBar(String bar) {
+ public void setBar(String bar) {
     this.bar = bar;
   }
 
@@ -61,7 +54,7 @@ public class HasOnlyReadOnly  {
    * Sets the <code>foo</code> property.
    * <br><em>N.B. <code>foo</code> is <b>read only</b>; client code should not call this method</em>.
    */
-  public void setFoo(String foo) {
+ public void setFoo(String foo) {
     this.foo = foo;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MapTest.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MapTest.java
index e5af440e022..f9815b0c9ba 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MapTest.java
@@ -10,13 +10,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -27,12 +20,10 @@ public class MapTest  {
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
 
-@XmlType(name="InnerEnum")
-@XmlEnum(String.class)
 public enum InnerEnum {
 
-    @XmlEnumValue("UPPER") @JsonProperty("UPPER") UPPER(String.valueOf("UPPER")), 
-    @XmlEnumValue("lower") @JsonProperty("lower") LOWER(String.valueOf("lower"));
+    @JsonProperty("UPPER") UPPER(String.valueOf("UPPER")),
+    @JsonProperty("lower") LOWER(String.valueOf("lower"));
 
     private String value;
 
@@ -80,7 +71,7 @@ public enum InnerEnum {
   /**
    * Sets the <code>mapMapOfString</code> property.
    */
-  public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
+ public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
     this.mapMapOfString = mapMapOfString;
   }
 
@@ -112,7 +103,7 @@ public enum InnerEnum {
   /**
    * Sets the <code>mapOfEnumString</code> property.
    */
-  public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
+ public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
     this.mapOfEnumString = mapOfEnumString;
   }
 
@@ -144,7 +135,7 @@ public enum InnerEnum {
   /**
    * Sets the <code>directMap</code> property.
    */
-  public void setDirectMap(Map<String, Boolean> directMap) {
+ public void setDirectMap(Map<String, Boolean> directMap) {
     this.directMap = directMap;
   }
 
@@ -176,7 +167,7 @@ public enum InnerEnum {
   /**
    * Sets the <code>indirectMap</code> property.
    */
-  public void setIndirectMap(StringBooleanMap indirectMap) {
+ public void setIndirectMap(StringBooleanMap indirectMap) {
     this.indirectMap = indirectMap;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 7d9cd67f517..350ea5fdb62 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -10,13 +10,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -45,7 +38,7 @@ public class MixedPropertiesAndAdditionalPropertiesClass  {
   /**
    * Sets the <code>uuid</code> property.
    */
-  public void setUuid(UUID uuid) {
+ public void setUuid(UUID uuid) {
     this.uuid = uuid;
   }
 
@@ -69,7 +62,7 @@ public class MixedPropertiesAndAdditionalPropertiesClass  {
   /**
    * Sets the <code>dateTime</code> property.
    */
-  public void setDateTime(Date dateTime) {
+ public void setDateTime(Date dateTime) {
     this.dateTime = dateTime;
   }
 
@@ -93,7 +86,7 @@ public class MixedPropertiesAndAdditionalPropertiesClass  {
   /**
    * Sets the <code>map</code> property.
    */
-  public void setMap(Map<String, Animal> map) {
+ public void setMap(Map<String, Animal> map) {
     this.map = map;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Model200Response.java
index 7032adf8180..81c5628d325 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Model200Response.java
@@ -5,13 +5,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -40,7 +33,7 @@ public class Model200Response  {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(Integer name) {
+ public void setName(Integer name) {
     this.name = name;
   }
 
@@ -64,7 +57,7 @@ public class Model200Response  {
   /**
    * Sets the <code>propertyClass</code> property.
    */
-  public void setPropertyClass(String propertyClass) {
+ public void setPropertyClass(String propertyClass) {
     this.propertyClass = propertyClass;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelApiResponse.java
index c32b03268fa..2b92d32f17d 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelApiResponse.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -37,7 +30,7 @@ public class ModelApiResponse  {
   /**
    * Sets the <code>code</code> property.
    */
-  public void setCode(Integer code) {
+ public void setCode(Integer code) {
     this.code = code;
   }
 
@@ -61,7 +54,7 @@ public class ModelApiResponse  {
   /**
    * Sets the <code>type</code> property.
    */
-  public void setType(String type) {
+ public void setType(String type) {
     this.type = type;
   }
 
@@ -85,7 +78,7 @@ public class ModelApiResponse  {
   /**
    * Sets the <code>message</code> property.
    */
-  public void setMessage(String message) {
+ public void setMessage(String message) {
     this.message = message;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..abe8a12ce30
--- /dev/null
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,70 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+
+/**
+ * Must be named `File` for test.
+ */
+@ApiModel(description="Must be named `File` for test.")
+
+public class ModelFile  {
+  
+ /**
+  * Test capitalization
+  */
+  @ApiModelProperty(value = "Test capitalization")
+  private String sourceURI;
+ /**
+  * Test capitalization
+  * @return sourceURI
+  */
+  @JsonProperty("sourceURI")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  /**
+   * Sets the <code>sourceURI</code> property.
+   */
+ public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  /**
+   * Sets the <code>sourceURI</code> property.
+   */
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..50aff7d791a
--- /dev/null
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,61 @@
+package org.openapitools.model;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+
+public class ModelList  {
+  
+  @ApiModelProperty(value = "")
+  private String _123list;
+ /**
+  * Get _123list
+  * @return _123list
+  */
+  @JsonProperty("123-list")
+  public String get123list() {
+    return _123list;
+  }
+
+  /**
+   * Sets the <code>_123list</code> property.
+   */
+ public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  /**
+   * Sets the <code>_123list</code> property.
+   */
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelReturn.java
index 54deb3c6584..5e3badeb563 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ModelReturn.java
@@ -5,13 +5,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -37,7 +30,7 @@ public class ModelReturn  {
   /**
    * Sets the <code>_return</code> property.
    */
-  public void setReturn(Integer _return) {
+ public void setReturn(Integer _return) {
     this._return = _return;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Name.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Name.java
index 1865d1d155a..1f487b2f5c4 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Name.java
@@ -5,13 +5,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -47,7 +40,7 @@ public class Name  {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(Integer name) {
+ public void setName(Integer name) {
     this.name = name;
   }
 
@@ -72,7 +65,7 @@ public class Name  {
    * Sets the <code>snakeCase</code> property.
    * <br><em>N.B. <code>snakeCase</code> is <b>read only</b>; client code should not call this method</em>.
    */
-  public void setSnakeCase(Integer snakeCase) {
+ public void setSnakeCase(Integer snakeCase) {
     this.snakeCase = snakeCase;
   }
 
@@ -97,7 +90,7 @@ public class Name  {
   /**
    * Sets the <code>property</code> property.
    */
-  public void setProperty(String property) {
+ public void setProperty(String property) {
     this.property = property;
   }
 
@@ -122,7 +115,7 @@ public class Name  {
    * Sets the <code>_123number</code> property.
    * <br><em>N.B. <code>_123number</code> is <b>read only</b>; client code should not call this method</em>.
    */
-  public void set123number(Integer _123number) {
+ public void set123number(Integer _123number) {
     this._123number = _123number;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/NumberOnly.java
index 52018fc1505..39a9ffb278b 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/NumberOnly.java
@@ -5,13 +5,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,7 +26,7 @@ public class NumberOnly  {
   /**
    * Sets the <code>justNumber</code> property.
    */
-  public void setJustNumber(BigDecimal justNumber) {
+ public void setJustNumber(BigDecimal justNumber) {
     this.justNumber = justNumber;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Order.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Order.java
index baf2e5252bd..721bdb2e23c 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Order.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -33,13 +26,11 @@ public class Order  {
   @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'hh:mm:ss.SSSX")
   private Date shipDate;
 
-@XmlType(name="StatusEnum")
-@XmlEnum(String.class)
 public enum StatusEnum {
 
-    @XmlEnumValue("placed") @JsonProperty("placed") PLACED(String.valueOf("placed")), 
-    @XmlEnumValue("approved") @JsonProperty("approved") APPROVED(String.valueOf("approved")), 
-    @XmlEnumValue("delivered") @JsonProperty("delivered") DELIVERED(String.valueOf("delivered"));
+    @JsonProperty("placed") PLACED(String.valueOf("placed")),
+    @JsonProperty("approved") APPROVED(String.valueOf("approved")),
+    @JsonProperty("delivered") DELIVERED(String.valueOf("delivered"));
 
     private String value;
 
@@ -86,7 +77,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>id</code> property.
    */
-  public void setId(Long id) {
+ public void setId(Long id) {
     this.id = id;
   }
 
@@ -110,7 +101,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>petId</code> property.
    */
-  public void setPetId(Long petId) {
+ public void setPetId(Long petId) {
     this.petId = petId;
   }
 
@@ -134,7 +125,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>quantity</code> property.
    */
-  public void setQuantity(Integer quantity) {
+ public void setQuantity(Integer quantity) {
     this.quantity = quantity;
   }
 
@@ -158,7 +149,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>shipDate</code> property.
    */
-  public void setShipDate(Date shipDate) {
+ public void setShipDate(Date shipDate) {
     this.shipDate = shipDate;
   }
 
@@ -182,7 +173,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>status</code> property.
    */
-  public void setStatus(StatusEnum status) {
+ public void setStatus(StatusEnum status) {
     this.status = status;
   }
 
@@ -206,7 +197,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>complete</code> property.
    */
-  public void setComplete(Boolean complete) {
+ public void setComplete(Boolean complete) {
     this.complete = complete;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterComposite.java
index 23c778ad679..3b1e1d66ca0 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterComposite.java
@@ -5,13 +5,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -39,7 +32,7 @@ public class OuterComposite  {
   /**
    * Sets the <code>myNumber</code> property.
    */
-  public void setMyNumber(BigDecimal myNumber) {
+ public void setMyNumber(BigDecimal myNumber) {
     this.myNumber = myNumber;
   }
 
@@ -63,7 +56,7 @@ public class OuterComposite  {
   /**
    * Sets the <code>myString</code> property.
    */
-  public void setMyString(String myString) {
+ public void setMyString(String myString) {
     this.myString = myString;
   }
 
@@ -87,7 +80,7 @@ public class OuterComposite  {
   /**
    * Sets the <code>myBoolean</code> property.
    */
-  public void setMyBoolean(Boolean myBoolean) {
+ public void setMyBoolean(Boolean myBoolean) {
     this.myBoolean = myBoolean;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterEnum.java
index b6870dca1e7..e745ca76055 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/OuterEnum.java
@@ -38,6 +38,6 @@ public enum OuterEnum {
     }
     throw new IllegalArgumentException("Unexpected value '" + value + "'");
   }
-  
+
 }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Pet.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Pet.java
index 289c50b9f4a..79af5b818e9 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Pet.java
@@ -2,6 +2,7 @@ package org.openapitools.model;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import java.util.ArrayList;
 import java.util.LinkedHashSet;
 import java.util.List;
@@ -12,13 +13,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -42,13 +36,11 @@ public class Pet  {
   @Valid
   private List<Tag> tags = null;
 
-@XmlType(name="StatusEnum")
-@XmlEnum(String.class)
 public enum StatusEnum {
 
-    @XmlEnumValue("available") @JsonProperty("available") AVAILABLE(String.valueOf("available")), 
-    @XmlEnumValue("pending") @JsonProperty("pending") PENDING(String.valueOf("pending")), 
-    @XmlEnumValue("sold") @JsonProperty("sold") SOLD(String.valueOf("sold"));
+    @JsonProperty("available") AVAILABLE(String.valueOf("available")),
+    @JsonProperty("pending") PENDING(String.valueOf("pending")),
+    @JsonProperty("sold") SOLD(String.valueOf("sold"));
 
     private String value;
 
@@ -92,7 +84,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>id</code> property.
    */
-  public void setId(Long id) {
+ public void setId(Long id) {
     this.id = id;
   }
 
@@ -116,7 +108,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>category</code> property.
    */
-  public void setCategory(Category category) {
+ public void setCategory(Category category) {
     this.category = category;
   }
 
@@ -141,7 +133,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
@@ -166,7 +158,8 @@ public enum StatusEnum {
   /**
    * Sets the <code>photoUrls</code> property.
    */
-  public void setPhotoUrls(Set<String> photoUrls) {
+ @JsonDeserialize(as = LinkedHashSet.class)
+ public void setPhotoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
   }
 
@@ -198,7 +191,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>tags</code> property.
    */
-  public void setTags(List<Tag> tags) {
+ public void setTags(List<Tag> tags) {
     this.tags = tags;
   }
 
@@ -230,7 +223,7 @@ public enum StatusEnum {
   /**
    * Sets the <code>status</code> property.
    */
-  public void setStatus(StatusEnum status) {
+ public void setStatus(StatusEnum status) {
     this.status = status;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ReadOnlyFirst.java
index a6e4ae5f29c..af5aee76dec 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/ReadOnlyFirst.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -35,7 +28,7 @@ public class ReadOnlyFirst  {
    * Sets the <code>bar</code> property.
    * <br><em>N.B. <code>bar</code> is <b>read only</b>; client code should not call this method</em>.
    */
-  public void setBar(String bar) {
+ public void setBar(String bar) {
     this.bar = bar;
   }
 
@@ -60,7 +53,7 @@ public class ReadOnlyFirst  {
   /**
    * Sets the <code>baz</code> property.
    */
-  public void setBaz(String baz) {
+ public void setBaz(String baz) {
     this.baz = baz;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/SpecialModelName.java
index 8356a138be6..8f9d57bd14a 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/SpecialModelName.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -31,7 +24,7 @@ public class SpecialModelName  {
   /**
    * Sets the <code>$specialPropertyName</code> property.
    */
-  public void set$SpecialPropertyName(Long $specialPropertyName) {
+ public void set$SpecialPropertyName(Long $specialPropertyName) {
     this.$specialPropertyName = $specialPropertyName;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/StringBooleanMap.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/StringBooleanMap.java
index 5e8472614b3..904d5b9bc7c 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/StringBooleanMap.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/StringBooleanMap.java
@@ -6,13 +6,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Tag.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Tag.java
index b0f5297852e..fc47777ce1f 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/Tag.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -34,7 +27,7 @@ public class Tag  {
   /**
    * Sets the <code>id</code> property.
    */
-  public void setId(Long id) {
+ public void setId(Long id) {
     this.id = id;
   }
 
@@ -58,7 +51,7 @@ public class Tag  {
   /**
    * Sets the <code>name</code> property.
    */
-  public void setName(String name) {
+ public void setName(String name) {
     this.name = name;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderDefault.java
index a248f8ccb82..e6ce5057542 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderDefault.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -48,7 +41,7 @@ public class TypeHolderDefault  {
   /**
    * Sets the <code>stringItem</code> property.
    */
-  public void setStringItem(String stringItem) {
+ public void setStringItem(String stringItem) {
     this.stringItem = stringItem;
   }
 
@@ -73,7 +66,7 @@ public class TypeHolderDefault  {
   /**
    * Sets the <code>numberItem</code> property.
    */
-  public void setNumberItem(BigDecimal numberItem) {
+ public void setNumberItem(BigDecimal numberItem) {
     this.numberItem = numberItem;
   }
 
@@ -98,7 +91,7 @@ public class TypeHolderDefault  {
   /**
    * Sets the <code>integerItem</code> property.
    */
-  public void setIntegerItem(Integer integerItem) {
+ public void setIntegerItem(Integer integerItem) {
     this.integerItem = integerItem;
   }
 
@@ -123,7 +116,7 @@ public class TypeHolderDefault  {
   /**
    * Sets the <code>boolItem</code> property.
    */
-  public void setBoolItem(Boolean boolItem) {
+ public void setBoolItem(Boolean boolItem) {
     this.boolItem = boolItem;
   }
 
@@ -148,7 +141,7 @@ public class TypeHolderDefault  {
   /**
    * Sets the <code>arrayItem</code> property.
    */
-  public void setArrayItem(List<Integer> arrayItem) {
+ public void setArrayItem(List<Integer> arrayItem) {
     this.arrayItem = arrayItem;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderExample.java
index 3056e3f6dfb..734f422fde2 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/TypeHolderExample.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -51,7 +44,7 @@ public class TypeHolderExample  {
   /**
    * Sets the <code>stringItem</code> property.
    */
-  public void setStringItem(String stringItem) {
+ public void setStringItem(String stringItem) {
     this.stringItem = stringItem;
   }
 
@@ -76,7 +69,7 @@ public class TypeHolderExample  {
   /**
    * Sets the <code>numberItem</code> property.
    */
-  public void setNumberItem(BigDecimal numberItem) {
+ public void setNumberItem(BigDecimal numberItem) {
     this.numberItem = numberItem;
   }
 
@@ -101,7 +94,7 @@ public class TypeHolderExample  {
   /**
    * Sets the <code>floatItem</code> property.
    */
-  public void setFloatItem(Float floatItem) {
+ public void setFloatItem(Float floatItem) {
     this.floatItem = floatItem;
   }
 
@@ -126,7 +119,7 @@ public class TypeHolderExample  {
   /**
    * Sets the <code>integerItem</code> property.
    */
-  public void setIntegerItem(Integer integerItem) {
+ public void setIntegerItem(Integer integerItem) {
     this.integerItem = integerItem;
   }
 
@@ -151,7 +144,7 @@ public class TypeHolderExample  {
   /**
    * Sets the <code>boolItem</code> property.
    */
-  public void setBoolItem(Boolean boolItem) {
+ public void setBoolItem(Boolean boolItem) {
     this.boolItem = boolItem;
   }
 
@@ -176,7 +169,7 @@ public class TypeHolderExample  {
   /**
    * Sets the <code>arrayItem</code> property.
    */
-  public void setArrayItem(List<Integer> arrayItem) {
+ public void setArrayItem(List<Integer> arrayItem) {
     this.arrayItem = arrayItem;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/User.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/User.java
index 0b52c6ebfe0..65baf8e2b9d 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/User.java
@@ -4,13 +4,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -55,7 +48,7 @@ public class User  {
   /**
    * Sets the <code>id</code> property.
    */
-  public void setId(Long id) {
+ public void setId(Long id) {
     this.id = id;
   }
 
@@ -79,7 +72,7 @@ public class User  {
   /**
    * Sets the <code>username</code> property.
    */
-  public void setUsername(String username) {
+ public void setUsername(String username) {
     this.username = username;
   }
 
@@ -103,7 +96,7 @@ public class User  {
   /**
    * Sets the <code>firstName</code> property.
    */
-  public void setFirstName(String firstName) {
+ public void setFirstName(String firstName) {
     this.firstName = firstName;
   }
 
@@ -127,7 +120,7 @@ public class User  {
   /**
    * Sets the <code>lastName</code> property.
    */
-  public void setLastName(String lastName) {
+ public void setLastName(String lastName) {
     this.lastName = lastName;
   }
 
@@ -151,7 +144,7 @@ public class User  {
   /**
    * Sets the <code>email</code> property.
    */
-  public void setEmail(String email) {
+ public void setEmail(String email) {
     this.email = email;
   }
 
@@ -175,7 +168,7 @@ public class User  {
   /**
    * Sets the <code>password</code> property.
    */
-  public void setPassword(String password) {
+ public void setPassword(String password) {
     this.password = password;
   }
 
@@ -199,7 +192,7 @@ public class User  {
   /**
    * Sets the <code>phone</code> property.
    */
-  public void setPhone(String phone) {
+ public void setPhone(String phone) {
     this.phone = phone;
   }
 
@@ -223,7 +216,7 @@ public class User  {
   /**
    * Sets the <code>userStatus</code> property.
    */
-  public void setUserStatus(Integer userStatus) {
+ public void setUserStatus(Integer userStatus) {
     this.userStatus = userStatus;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/XmlItem.java
index b5222f8ac5c..0650d220afe 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/gen/java/org/openapitools/model/XmlItem.java
@@ -7,13 +7,6 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 
 import io.swagger.annotations.ApiModelProperty;
-import javax.xml.bind.annotation.XmlElement;
-import javax.xml.bind.annotation.XmlRootElement;
-import javax.xml.bind.annotation.XmlAccessType;
-import javax.xml.bind.annotation.XmlAccessorType;
-import javax.xml.bind.annotation.XmlType;
-import javax.xml.bind.annotation.XmlEnum;
-import javax.xml.bind.annotation.XmlEnumValue;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
@@ -123,7 +116,7 @@ public class XmlItem  {
   /**
    * Sets the <code>attributeString</code> property.
    */
-  public void setAttributeString(String attributeString) {
+ public void setAttributeString(String attributeString) {
     this.attributeString = attributeString;
   }
 
@@ -147,7 +140,7 @@ public class XmlItem  {
   /**
    * Sets the <code>attributeNumber</code> property.
    */
-  public void setAttributeNumber(BigDecimal attributeNumber) {
+ public void setAttributeNumber(BigDecimal attributeNumber) {
     this.attributeNumber = attributeNumber;
   }
 
@@ -171,7 +164,7 @@ public class XmlItem  {
   /**
    * Sets the <code>attributeInteger</code> property.
    */
-  public void setAttributeInteger(Integer attributeInteger) {
+ public void setAttributeInteger(Integer attributeInteger) {
     this.attributeInteger = attributeInteger;
   }
 
@@ -195,7 +188,7 @@ public class XmlItem  {
   /**
    * Sets the <code>attributeBoolean</code> property.
    */
-  public void setAttributeBoolean(Boolean attributeBoolean) {
+ public void setAttributeBoolean(Boolean attributeBoolean) {
     this.attributeBoolean = attributeBoolean;
   }
 
@@ -219,7 +212,7 @@ public class XmlItem  {
   /**
    * Sets the <code>wrappedArray</code> property.
    */
-  public void setWrappedArray(List<Integer> wrappedArray) {
+ public void setWrappedArray(List<Integer> wrappedArray) {
     this.wrappedArray = wrappedArray;
   }
 
@@ -251,7 +244,7 @@ public class XmlItem  {
   /**
    * Sets the <code>nameString</code> property.
    */
-  public void setNameString(String nameString) {
+ public void setNameString(String nameString) {
     this.nameString = nameString;
   }
 
@@ -275,7 +268,7 @@ public class XmlItem  {
   /**
    * Sets the <code>nameNumber</code> property.
    */
-  public void setNameNumber(BigDecimal nameNumber) {
+ public void setNameNumber(BigDecimal nameNumber) {
     this.nameNumber = nameNumber;
   }
 
@@ -299,7 +292,7 @@ public class XmlItem  {
   /**
    * Sets the <code>nameInteger</code> property.
    */
-  public void setNameInteger(Integer nameInteger) {
+ public void setNameInteger(Integer nameInteger) {
     this.nameInteger = nameInteger;
   }
 
@@ -323,7 +316,7 @@ public class XmlItem  {
   /**
    * Sets the <code>nameBoolean</code> property.
    */
-  public void setNameBoolean(Boolean nameBoolean) {
+ public void setNameBoolean(Boolean nameBoolean) {
     this.nameBoolean = nameBoolean;
   }
 
@@ -347,7 +340,7 @@ public class XmlItem  {
   /**
    * Sets the <code>nameArray</code> property.
    */
-  public void setNameArray(List<Integer> nameArray) {
+ public void setNameArray(List<Integer> nameArray) {
     this.nameArray = nameArray;
   }
 
@@ -379,7 +372,7 @@ public class XmlItem  {
   /**
    * Sets the <code>nameWrappedArray</code> property.
    */
-  public void setNameWrappedArray(List<Integer> nameWrappedArray) {
+ public void setNameWrappedArray(List<Integer> nameWrappedArray) {
     this.nameWrappedArray = nameWrappedArray;
   }
 
@@ -411,7 +404,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixString</code> property.
    */
-  public void setPrefixString(String prefixString) {
+ public void setPrefixString(String prefixString) {
     this.prefixString = prefixString;
   }
 
@@ -435,7 +428,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNumber</code> property.
    */
-  public void setPrefixNumber(BigDecimal prefixNumber) {
+ public void setPrefixNumber(BigDecimal prefixNumber) {
     this.prefixNumber = prefixNumber;
   }
 
@@ -459,7 +452,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixInteger</code> property.
    */
-  public void setPrefixInteger(Integer prefixInteger) {
+ public void setPrefixInteger(Integer prefixInteger) {
     this.prefixInteger = prefixInteger;
   }
 
@@ -483,7 +476,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixBoolean</code> property.
    */
-  public void setPrefixBoolean(Boolean prefixBoolean) {
+ public void setPrefixBoolean(Boolean prefixBoolean) {
     this.prefixBoolean = prefixBoolean;
   }
 
@@ -507,7 +500,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixArray</code> property.
    */
-  public void setPrefixArray(List<Integer> prefixArray) {
+ public void setPrefixArray(List<Integer> prefixArray) {
     this.prefixArray = prefixArray;
   }
 
@@ -539,7 +532,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixWrappedArray</code> property.
    */
-  public void setPrefixWrappedArray(List<Integer> prefixWrappedArray) {
+ public void setPrefixWrappedArray(List<Integer> prefixWrappedArray) {
     this.prefixWrappedArray = prefixWrappedArray;
   }
 
@@ -571,7 +564,7 @@ public class XmlItem  {
   /**
    * Sets the <code>namespaceString</code> property.
    */
-  public void setNamespaceString(String namespaceString) {
+ public void setNamespaceString(String namespaceString) {
     this.namespaceString = namespaceString;
   }
 
@@ -595,7 +588,7 @@ public class XmlItem  {
   /**
    * Sets the <code>namespaceNumber</code> property.
    */
-  public void setNamespaceNumber(BigDecimal namespaceNumber) {
+ public void setNamespaceNumber(BigDecimal namespaceNumber) {
     this.namespaceNumber = namespaceNumber;
   }
 
@@ -619,7 +612,7 @@ public class XmlItem  {
   /**
    * Sets the <code>namespaceInteger</code> property.
    */
-  public void setNamespaceInteger(Integer namespaceInteger) {
+ public void setNamespaceInteger(Integer namespaceInteger) {
     this.namespaceInteger = namespaceInteger;
   }
 
@@ -643,7 +636,7 @@ public class XmlItem  {
   /**
    * Sets the <code>namespaceBoolean</code> property.
    */
-  public void setNamespaceBoolean(Boolean namespaceBoolean) {
+ public void setNamespaceBoolean(Boolean namespaceBoolean) {
     this.namespaceBoolean = namespaceBoolean;
   }
 
@@ -667,7 +660,7 @@ public class XmlItem  {
   /**
    * Sets the <code>namespaceArray</code> property.
    */
-  public void setNamespaceArray(List<Integer> namespaceArray) {
+ public void setNamespaceArray(List<Integer> namespaceArray) {
     this.namespaceArray = namespaceArray;
   }
 
@@ -699,7 +692,7 @@ public class XmlItem  {
   /**
    * Sets the <code>namespaceWrappedArray</code> property.
    */
-  public void setNamespaceWrappedArray(List<Integer> namespaceWrappedArray) {
+ public void setNamespaceWrappedArray(List<Integer> namespaceWrappedArray) {
     this.namespaceWrappedArray = namespaceWrappedArray;
   }
 
@@ -731,7 +724,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNsString</code> property.
    */
-  public void setPrefixNsString(String prefixNsString) {
+ public void setPrefixNsString(String prefixNsString) {
     this.prefixNsString = prefixNsString;
   }
 
@@ -755,7 +748,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNsNumber</code> property.
    */
-  public void setPrefixNsNumber(BigDecimal prefixNsNumber) {
+ public void setPrefixNsNumber(BigDecimal prefixNsNumber) {
     this.prefixNsNumber = prefixNsNumber;
   }
 
@@ -779,7 +772,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNsInteger</code> property.
    */
-  public void setPrefixNsInteger(Integer prefixNsInteger) {
+ public void setPrefixNsInteger(Integer prefixNsInteger) {
     this.prefixNsInteger = prefixNsInteger;
   }
 
@@ -803,7 +796,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNsBoolean</code> property.
    */
-  public void setPrefixNsBoolean(Boolean prefixNsBoolean) {
+ public void setPrefixNsBoolean(Boolean prefixNsBoolean) {
     this.prefixNsBoolean = prefixNsBoolean;
   }
 
@@ -827,7 +820,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNsArray</code> property.
    */
-  public void setPrefixNsArray(List<Integer> prefixNsArray) {
+ public void setPrefixNsArray(List<Integer> prefixNsArray) {
     this.prefixNsArray = prefixNsArray;
   }
 
@@ -859,7 +852,7 @@ public class XmlItem  {
   /**
    * Sets the <code>prefixNsWrappedArray</code> property.
    */
-  public void setPrefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
+ public void setPrefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/AnotherFakeApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/AnotherFakeApiServiceImpl.java
index 28fea2b136b..29a7d7c101e 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/AnotherFakeApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/AnotherFakeApiServiceImpl.java
@@ -35,7 +35,7 @@ public class AnotherFakeApiServiceImpl implements AnotherFakeApi {
     {
         try {
             File cacheFile = new File(System.getProperty("jaxrs.test.server.json",
-                    "/Users/williamcheng/Code/openapi-generator/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
+                    "/Users/williamcheng/Code/openapi-generator2/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
             cache = JsonCache.Factory.instance.get("test-data").load(cacheFile).child("/org.openapitools.api/AnotherFakeApi");
         } catch (CacheException e) {
             e.printStackTrace();
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeApiServiceImpl.java
index d13339ce7e4..2fa5d618e5a 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeApiServiceImpl.java
@@ -9,6 +9,7 @@ import org.openapitools.model.FileSchemaTestClass;
 import java.util.List;
 import org.joda.time.LocalDate;
 import java.util.Map;
+import org.openapitools.model.ModelFile;
 import org.openapitools.model.OuterComposite;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
@@ -43,7 +44,7 @@ public class FakeApiServiceImpl implements FakeApi {
     {
         try {
             File cacheFile = new File(System.getProperty("jaxrs.test.server.json",
-                    "/Users/williamcheng/Code/openapi-generator/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
+                    "/Users/williamcheng/Code/openapi-generator2/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
             cache = JsonCache.Factory.instance.get("test-data").load(cacheFile).child("/org.openapitools.api/FakeApi");
         } catch (CacheException e) {
             e.printStackTrace();
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeClassnameTags123ApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeClassnameTags123ApiServiceImpl.java
index 40d87c392f4..a91ea641651 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeClassnameTags123ApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/FakeClassnameTags123ApiServiceImpl.java
@@ -35,7 +35,7 @@ public class FakeClassnameTags123ApiServiceImpl implements FakeClassnameTags123A
     {
         try {
             File cacheFile = new File(System.getProperty("jaxrs.test.server.json",
-                    "/Users/williamcheng/Code/openapi-generator/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
+                    "/Users/williamcheng/Code/openapi-generator2/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
             cache = JsonCache.Factory.instance.get("test-data").load(cacheFile).child("/org.openapitools.api/FakeClassnameTags123Api");
         } catch (CacheException e) {
             e.printStackTrace();
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index afa80c0864e..40cd3502fbd 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -39,7 +39,7 @@ public class PetApiServiceImpl implements PetApi {
     {
         try {
             File cacheFile = new File(System.getProperty("jaxrs.test.server.json",
-                    "/Users/williamcheng/Code/openapi-generator/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
+                    "/Users/williamcheng/Code/openapi-generator2/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
             cache = JsonCache.Factory.instance.get("test-data").load(cacheFile).child("/org.openapitools.api/PetApi");
         } catch (CacheException e) {
             e.printStackTrace();
@@ -135,7 +135,7 @@ public class PetApiServiceImpl implements PetApi {
      *
      */
     @Override
-    public ModelApiResponse uploadFile(Long petId, String additionalMetadata,  Attachment fileDetail) {
+    public ModelApiResponse uploadFile(Long petId, String additionalMetadata,  Attachment _fileDetail) {
         try {
             ModelApiResponse response = cache.getObject("/uploadFile/response", ModelApiResponse.class);
             return response;
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/StoreApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/StoreApiServiceImpl.java
index e91cee8931d..ee016a4fd33 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/StoreApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/StoreApiServiceImpl.java
@@ -35,7 +35,7 @@ public class StoreApiServiceImpl implements StoreApi {
     {
         try {
             File cacheFile = new File(System.getProperty("jaxrs.test.server.json",
-                    "/Users/williamcheng/Code/openapi-generator/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
+                    "/Users/williamcheng/Code/openapi-generator2/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
             cache = JsonCache.Factory.instance.get("test-data").load(cacheFile).child("/org.openapitools.api/StoreApi");
         } catch (CacheException e) {
             e.printStackTrace();
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/UserApiServiceImpl.java b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/UserApiServiceImpl.java
index a14e1d9abd9..23d653171ef 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/UserApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/java/org/openapitools/api/impl/UserApiServiceImpl.java
@@ -1,6 +1,7 @@
 package org.openapitools.api.impl;
 
 import org.openapitools.api.*;
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import org.openapitools.model.User;
@@ -35,7 +36,7 @@ public class UserApiServiceImpl implements UserApi {
     {
         try {
             File cacheFile = new File(System.getProperty("jaxrs.test.server.json",
-                    "/Users/williamcheng/Code/openapi-generator/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
+                    "/Users/williamcheng/Code/openapi-generator2/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json"));
             cache = JsonCache.Factory.instance.get("test-data").load(cacheFile).child("/org.openapitools.api/UserApi");
         } catch (CacheException e) {
             e.printStackTrace();
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/ApplicationContext.xml b/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/ApplicationContext.xml
index 81eb4c1f5c3..1551fd49818 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/ApplicationContext.xml
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/ApplicationContext.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:cxf="http://cxf.apache.org/core"
        xmlns:jaxrs="http://cxf.apache.org/jaxrs"
        xmlns:jee="http://www.springframework.org/schema/jee"
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json b/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json
index ee88f1646d1..dd78d662567 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/resources/test-data.json
@@ -79,7 +79,7 @@
         }
       },
       "testEndpointParameters" : {
-        "_double" : 77.14654636614235246584049686929773770316387526690959930419921875,
+        "_double" : 77.14654636614235,
         "patternWithoutDelimiter" : "^V莙샊䲎ꖣ",
         "_byte" : "/w==",
         "integer" : 70,
@@ -125,6 +125,16 @@
         "http" : [ "j1HS55g" ],
         "url" : [ "WIg2d" ],
         "context" : [ "h77kAFh84Xr" ]
+      },
+      "testBodyWithFileSchema" : {
+        "body" : {
+          "_file" : {
+            "sourceURI" : "pBPG5nH"
+          },
+          "files" : [ {
+            "sourceURI" : "Hhe7osLC9"
+          } ]
+        }
       }
     },
     "FakeClassnameTags123Api" : {
@@ -238,7 +248,8 @@
           "code" : -948139149,
           "type" : "dm3vxsNtg94DA",
           "message" : "I9pPJHHy"
-        }
+        },
+        "_file" : "D53FF1D3AA"
       },
       "uploadFileWithRequiredFile" : {
         "petId" : -3179009564025681920,
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/context.xml b/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/context.xml
index a14b9a13d01..0dc82b9a2e9 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/context.xml
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/context.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:cxf="http://cxf.apache.org/core"
        xmlns:jaxrs="http://cxf.apache.org/jaxrs"
        xmlns:jee="http://www.springframework.org/schema/jee"
@@ -11,8 +11,8 @@
                            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
                            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd">
 
-    
-    
+
+
     <import resource="classpath:/ApplicationContext.xml" />
-     
+
 </beans>
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/web.xml b/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/web.xml
index 9d905ae076b..890f10ef14d 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/web.xml
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/main/webapp/WEB-INF/web.xml
@@ -19,5 +19,5 @@
         <servlet-name>CXFServiceServlet</servlet-name>
         <url-pattern>/rest/*</url-pattern>
     </servlet-mapping>
-    
+
 </web-app>
diff --git a/samples/server/petstore/jaxrs-cxf-test-data/src/test/java/org/openapitools/api/SpringBootApplication.java b/samples/server/petstore/jaxrs-cxf-test-data/src/test/java/org/openapitools/api/SpringBootApplication.java
index 4f284a3ec39..c26e61d0667 100644
--- a/samples/server/petstore/jaxrs-cxf-test-data/src/test/java/org/openapitools/api/SpringBootApplication.java
+++ b/samples/server/petstore/jaxrs-cxf-test-data/src/test/java/org/openapitools/api/SpringBootApplication.java
@@ -11,15 +11,15 @@ import org.springframework.context.annotation.ImportResource;
 @EnableAutoConfiguration
 @SpringBootConfiguration
 public class SpringBootApplication extends SpringBootServletInitializer {
-    
+
     @Override
     protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
         return application.sources(SpringBootApplication.class);
     }
-    
+
     public static void main(String[] args) {
         SpringApplication.run(SpringBootApplication.class, args);
     }
-    
-    
+
+
 }
\ No newline at end of file
diff --git a/samples/server/petstore/jaxrs-cxf/.openapi-generator/FILES b/samples/server/petstore/jaxrs-cxf/.openapi-generator/FILES
index 84f22716a35..95d35eca2bc 100644
--- a/samples/server/petstore/jaxrs-cxf/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-cxf/.openapi-generator/FILES
@@ -38,6 +38,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs-cxf/pom.xml b/samples/server/petstore/jaxrs-cxf/pom.xml
index a4a13cf0922..5f7076fa0c1 100644
--- a/samples/server/petstore/jaxrs-cxf/pom.xml
+++ b/samples/server/petstore/jaxrs-cxf/pom.xml
@@ -201,7 +201,7 @@
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <swagger-core-version>1.5.22</swagger-core-version>
     <jetty-version>9.2.9.v20150224</jetty-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <logback-version>1.2.0</logback-version>
     <beanvalidation-version>2.0.2</beanvalidation-version>
     <cxf-version>3.3.0</cxf-version>
diff --git a/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/api/PetApi.java
index 347d635a02c..924046ee937 100644
--- a/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/api/PetApi.java
@@ -141,7 +141,7 @@ public interface PetApi  {
     @ApiOperation(value = "uploads an image", tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment fileDetail);
+    public ModelApiResponse uploadFile(@PathParam("petId") Long petId, @Multipart(value = "additionalMetadata", required = false)  String additionalMetadata,  @Multipart(value = "file" , required = false) Attachment _fileDetail);
 
     /**
      * uploads an image (required)
diff --git a/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index cb285dd7abd..6213664ff0b 100644
--- a/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -2,6 +2,7 @@ package org.openapitools.model;
 
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 
@@ -12,26 +13,26 @@ public class FileSchemaTestClass  {
   
   @ApiModelProperty(value = "")
   @Valid
-  private java.io.File file;
+  private ModelFile _file;
 
   @ApiModelProperty(value = "")
   @Valid
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
  /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
   **/
   @JsonProperty("file")
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
@@ -40,20 +41,20 @@ public class FileSchemaTestClass  {
    * @return files
   **/
   @JsonProperty("files")
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     this.files.add(filesItem);
     return this;
   }
@@ -64,7 +65,7 @@ public class FileSchemaTestClass  {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..36f52f07e29
--- /dev/null
+++ b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,61 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+  * Must be named `File` for test.
+ **/
+@ApiModel(description="Must be named `File` for test.")
+public class ModelFile  {
+  
+  @ApiModelProperty(value = "Test capitalization")
+ /**
+   * Test capitalization
+  **/
+  private String sourceURI;
+ /**
+   * Test capitalization
+   * @return sourceURI
+  **/
+  @JsonProperty("sourceURI")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6ea1e0d5a32
--- /dev/null
+++ b/samples/server/petstore/jaxrs-cxf/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,53 @@
+package org.openapitools.model;
+
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class ModelList  {
+  
+  @ApiModelProperty(value = "")
+  private String _123list;
+ /**
+   * Get _123list
+   * @return _123list
+  **/
+  @JsonProperty("123-list")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private static String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-datelib-j8/.openapi-generator/FILES b/samples/server/petstore/jaxrs-datelib-j8/.openapi-generator/FILES
index 5e52a96e594..18ef9ada56a 100644
--- a/samples/server/petstore/jaxrs-datelib-j8/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-datelib-j8/.openapi-generator/FILES
@@ -53,6 +53,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApi.java
index f404694759d..85df879b338 100644
--- a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApi.java
@@ -197,8 +197,8 @@ public class PetApi  {
         @io.swagger.annotations.ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class)
     })
     public Response uploadFile(@ApiParam(value = "ID of pet to update", required = true) @PathParam("petId") @NotNull  Long petId,@ApiParam(value = "Additional data to pass to server")@FormDataParam("additionalMetadata")  String additionalMetadata,
- @FormDataParam("file") FormDataBodyPart fileBodypart ,@Context SecurityContext securityContext)
+ @FormDataParam("file") FormDataBodyPart _fileBodypart ,@Context SecurityContext securityContext)
     throws NotFoundException {
-        return delegate.uploadFile(petId, additionalMetadata, fileBodypart, securityContext);
+        return delegate.uploadFile(petId, additionalMetadata, _fileBodypart, securityContext);
     }
 }
diff --git a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApiService.java
index 1bf9b537255..2d9abcfd046 100644
--- a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/api/PetApiService.java
@@ -27,5 +27,5 @@ public abstract class PetApiService {
     public abstract Response getPetById(Long petId,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePet(Pet body,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePetWithForm(Long petId,String name,String status,SecurityContext securityContext) throws NotFoundException;
-    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart fileBodypart,SecurityContext securityContext) throws NotFoundException;
+    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart _fileBodypart,SecurityContext securityContext) throws NotFoundException;
 }
diff --git a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index 7debd01e8dd..4eec1363dab 100644
--- a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -20,6 +20,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import java.io.Serializable;
 import javax.validation.constraints.*;
@@ -36,38 +37,38 @@ import javax.validation.Valid;
 public class FileSchemaTestClass  implements Serializable {
   public static final String JSON_PROPERTY_FILE = "file";
   @JsonProperty(JSON_PROPERTY_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   @JsonProperty(JSON_PROPERTY_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
   /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
    **/
   @JsonProperty(value = "file")
   @ApiModelProperty(value = "")
   @Valid 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -82,11 +83,11 @@ public class FileSchemaTestClass  implements Serializable {
   @JsonProperty(value = "files")
   @ApiModelProperty(value = "")
   @Valid 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -100,13 +101,13 @@ public class FileSchemaTestClass  implements Serializable {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
 
@@ -115,7 +116,7 @@ public class FileSchemaTestClass  implements Serializable {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..eb0978f9a01
--- /dev/null
+++ b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,99 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelFile  implements Serializable {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(value = "sourceURI")
+  @ApiModelProperty(value = "Test capitalization")
+  
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..3829ef4d013
--- /dev/null
+++ b/samples/server/petstore/jaxrs-datelib-j8/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,98 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ModelList
+ */
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelList  implements Serializable {
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(value = "123-list")
+  @ApiModelProperty(value = "")
+  
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-datelib-j8/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs-datelib-j8/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index b075fabf211..5cbdde95355 100644
--- a/samples/server/petstore/jaxrs-datelib-j8/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-datelib-j8/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -56,7 +56,7 @@ public class PetApiServiceImpl extends PetApiService {
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
     @Override
-    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart fileBodypart, SecurityContext securityContext) throws NotFoundException {
+    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart _fileBodypart, SecurityContext securityContext) throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
diff --git a/samples/server/petstore/jaxrs-jersey/.openapi-generator/FILES b/samples/server/petstore/jaxrs-jersey/.openapi-generator/FILES
index 29c6d9b65d7..910d1c2a90b 100644
--- a/samples/server/petstore/jaxrs-jersey/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-jersey/.openapi-generator/FILES
@@ -48,6 +48,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NullableClass.java
diff --git a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApi.java
index 4c09a881ef7..5bf2a1ace0c 100644
--- a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApi.java
@@ -198,8 +198,8 @@ public class PetApi  {
         @io.swagger.annotations.ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class)
     })
     public Response uploadFile(@ApiParam(value = "ID of pet to update", required = true) @PathParam("petId") @NotNull  Long petId,@ApiParam(value = "Additional data to pass to server")@FormDataParam("additionalMetadata")  String additionalMetadata,
- @FormDataParam("file") FormDataBodyPart fileBodypart ,@Context SecurityContext securityContext)
+ @FormDataParam("file") FormDataBodyPart _fileBodypart ,@Context SecurityContext securityContext)
     throws NotFoundException {
-        return delegate.uploadFile(petId, additionalMetadata, fileBodypart, securityContext);
+        return delegate.uploadFile(petId, additionalMetadata, _fileBodypart, securityContext);
     }
 }
diff --git a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApiService.java
index a019a9f498f..3c81ecd0b21 100644
--- a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/api/PetApiService.java
@@ -27,5 +27,5 @@ public abstract class PetApiService {
     public abstract Response getPetById(Long petId,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePet(Pet pet,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePetWithForm(Long petId,String name,String status,SecurityContext securityContext) throws NotFoundException;
-    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart fileBodypart,SecurityContext securityContext) throws NotFoundException;
+    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart _fileBodypart,SecurityContext securityContext) throws NotFoundException;
 }
diff --git a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index fb40a511e44..3b94a5f7e59 100644
--- a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -20,6 +20,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -35,40 +36,40 @@ import javax.validation.Valid;
 public class FileSchemaTestClass   {
   public static final String JSON_PROPERTY_FILE = "file";
   @JsonProperty(JSON_PROPERTY_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   @JsonProperty(JSON_PROPERTY_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
   /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
    **/
   @JsonProperty(value = "file")
   @ApiModelProperty(value = "")
   @Valid 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -81,11 +82,11 @@ public class FileSchemaTestClass   {
   @JsonProperty(value = "files")
   @ApiModelProperty(value = "")
   @Valid 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -99,13 +100,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
 
@@ -114,7 +115,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..dfb1fbe25c8
--- /dev/null
+++ b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,98 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelFile   {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(value = "sourceURI")
+  @ApiModelProperty(value = "Test capitalization")
+  
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..b6f07ac1c50
--- /dev/null
+++ b/samples/server/petstore/jaxrs-jersey/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,97 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ModelList
+ */
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelList   {
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(value = "123-list")
+  @ApiModelProperty(value = "")
+  
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs-jersey/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs-jersey/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index 950a9f175fa..7c7baf7a7ec 100644
--- a/samples/server/petstore/jaxrs-jersey/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs-jersey/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -56,7 +56,7 @@ public class PetApiServiceImpl extends PetApiService {
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
     @Override
-    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart fileBodypart, SecurityContext securityContext) throws NotFoundException {
+    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart _fileBodypart, SecurityContext securityContext) throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
diff --git a/samples/server/petstore/jaxrs-resteasy/default-value/build.gradle b/samples/server/petstore/jaxrs-resteasy/default-value/build.gradle
index dd8b11f8b67..e50aba9a14d 100644
--- a/samples/server/petstore/jaxrs-resteasy/default-value/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/default-value/build.gradle
@@ -23,7 +23,7 @@ dependencies {
     //TODO: swaggerFeature
     compile 'io.swagger:swagger-jaxrs:1.5.12'
 
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-resteasy/default/build.gradle b/samples/server/petstore/jaxrs-resteasy/default/build.gradle
index dd8b11f8b67..e50aba9a14d 100644
--- a/samples/server/petstore/jaxrs-resteasy/default/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/default/build.gradle
@@ -23,7 +23,7 @@ dependencies {
     //TODO: swaggerFeature
     compile 'io.swagger:swagger-jaxrs:1.5.12'
 
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-resteasy/eap-java8/build.gradle b/samples/server/petstore/jaxrs-resteasy/eap-java8/build.gradle
index 68567d57b78..c55a26708d2 100644
--- a/samples/server/petstore/jaxrs-resteasy/eap-java8/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/eap-java8/build.gradle
@@ -17,7 +17,7 @@ dependencies {
     compile         'org.jboss.resteasy:resteasy-jackson2-provider:3.0.11.Final'
     providedCompile 'jakarta.validation:jakarta.validation-api:2.0.2'
     compile         'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.9'
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-resteasy/eap-joda/build.gradle b/samples/server/petstore/jaxrs-resteasy/eap-joda/build.gradle
index 6c0bb712e06..6b89e90c1e3 100644
--- a/samples/server/petstore/jaxrs-resteasy/eap-joda/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/eap-joda/build.gradle
@@ -18,7 +18,7 @@ dependencies {
     providedCompile 'jakarta.validation:jakarta.validation-api:2.0.2'
     compile         'com.fasterxml.jackson.datatype:jackson-datatype-joda:2.9.9'
     compile         'joda-time:joda-time:2.7'
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-resteasy/eap/build.gradle b/samples/server/petstore/jaxrs-resteasy/eap/build.gradle
index 6c0bb712e06..6b89e90c1e3 100644
--- a/samples/server/petstore/jaxrs-resteasy/eap/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/eap/build.gradle
@@ -18,7 +18,7 @@ dependencies {
     providedCompile 'jakarta.validation:jakarta.validation-api:2.0.2'
     compile         'com.fasterxml.jackson.datatype:jackson-datatype-joda:2.9.9'
     compile         'joda-time:joda-time:2.7'
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-resteasy/java8/build.gradle b/samples/server/petstore/jaxrs-resteasy/java8/build.gradle
index dd8b11f8b67..e50aba9a14d 100644
--- a/samples/server/petstore/jaxrs-resteasy/java8/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/java8/build.gradle
@@ -23,7 +23,7 @@ dependencies {
     //TODO: swaggerFeature
     compile 'io.swagger:swagger-jaxrs:1.5.12'
 
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-resteasy/joda/build.gradle b/samples/server/petstore/jaxrs-resteasy/joda/build.gradle
index dd8b11f8b67..e50aba9a14d 100644
--- a/samples/server/petstore/jaxrs-resteasy/joda/build.gradle
+++ b/samples/server/petstore/jaxrs-resteasy/joda/build.gradle
@@ -23,7 +23,7 @@ dependencies {
     //TODO: swaggerFeature
     compile 'io.swagger:swagger-jaxrs:1.5.12'
 
-    testCompile     'junit:junit:4.13',
+    testCompile     'junit:junit:4.13.1',
                     'org.hamcrest:hamcrest-core:1.3'
 }
 
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/FILES b/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/FILES
index 2ea098090a4..912cd6039b7 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/FILES
@@ -38,6 +38,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/VERSION b/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/VERSION
index 6555596f931..0984c4c1ad2 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/VERSION
+++ b/samples/server/petstore/jaxrs-spec-interface-response/.openapi-generator/VERSION
@@ -1 +1 @@
-5.2.0-SNAPSHOT
\ No newline at end of file
+5.4.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/pom.xml b/samples/server/petstore/jaxrs-spec-interface-response/pom.xml
index fdf423d8275..65350cadeee 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/pom.xml
+++ b/samples/server/petstore/jaxrs-spec-interface-response/pom.xml
@@ -5,6 +5,8 @@
   <packaging>jar</packaging>
   <name>jaxrs-spec-interface-response-petstore-server</name>
   <version>1.0.0</version>
+
+
   <build>
     <sourceDirectory>src/main/java</sourceDirectory>
     <plugins>
@@ -36,9 +38,9 @@
   </build>
   <dependencies>
     <dependency>
-      <groupId>javax.ws.rs</groupId>
-      <artifactId>javax.ws.rs-api</artifactId>
-      <version>2.1.1</version>
+      <groupId>jakarta.ws.rs</groupId>
+      <artifactId>jakarta.ws.rs-api</artifactId>
+      <version>${jakarta.ws.rs-version}</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
@@ -71,14 +73,16 @@
     </dependency>
     <!-- Bean Validation API support -->
     <dependency>
-        <groupId>javax.validation</groupId>
-        <artifactId>validation-api</artifactId>
-        <version>1.1.0.Final</version>
+        <groupId>jakarta.validation</groupId>
+        <artifactId>jakarta.validation-api</artifactId>
+        <version>${beanvalidation-version}</version>
         <scope>provided</scope>
     </dependency>
   </dependencies>
   <properties>
     <jackson-version>2.9.9</jackson-version>
     <junit-version>4.13.1</junit-version>
+	<beanvalidation-version>2.0.2</beanvalidation-version>
+    <jakarta.ws.rs-version>2.1.6</jakarta.ws.rs-version>
   </properties>
 </project>
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/FakeApi.java
index 882acd3129a..6647d22250f 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/FakeApi.java
@@ -81,7 +81,7 @@ import javax.validation.Valid;
     @ApiOperation(value = "", notes = "", tags={ "fake" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "Success", response = Void.class) })
-    Response testBodyWithQueryParams(@QueryParam("query") @NotNull    String query,@Valid @NotNull User body);
+    Response testBodyWithQueryParams(@QueryParam("query") @NotNull   String query,@Valid @NotNull User body);
 
     @PATCH
     @Consumes({ "application/json" })
@@ -108,13 +108,13 @@ import javax.validation.Valid;
     @ApiResponses(value = { 
         @ApiResponse(code = 400, message = "Invalid request", response = Void.class),
         @ApiResponse(code = 404, message = "Not found", response = Void.class) })
-    Response testEnumParameters(@HeaderParam("enum_header_string_array")    @ApiParam("Header parameter enum test (string array)") List<String> enumHeaderStringArray,@HeaderParam("enum_header_string")   @DefaultValue("-efg")  @ApiParam("Header parameter enum test (string)") String enumHeaderString,@QueryParam("enum_query_string_array")   @ApiParam("Query parameter enum test (string array)")  List<String> enumQueryStringArray,@QueryParam("enum_query_string")  @DefaultValue("-efg")  @ApiParam("Query parameter enum test (string)")  String enumQueryString,@QueryParam("enum_query_integer")   @ApiParam("Query parameter enum test (double)")  Integer enumQueryInteger,@QueryParam("enum_query_double")   @ApiParam("Query parameter enum test (double)")  Double enumQueryDouble,@FormParam(value = "enum_form_string_array")  List<String> enumFormStringArray,@FormParam(value = "enum_form_string")  String enumFormString);
+    Response testEnumParameters(@HeaderParam("enum_header_string_array")   @ApiParam("Header parameter enum test (string array)") List<String> enumHeaderStringArray,@HeaderParam("enum_header_string")  @DefaultValue("-efg")  @ApiParam("Header parameter enum test (string)") String enumHeaderString,@QueryParam("enum_query_string_array")  @ApiParam("Query parameter enum test (string array)")  List<String> enumQueryStringArray,@QueryParam("enum_query_string") @DefaultValue("-efg")  @ApiParam("Query parameter enum test (string)")  String enumQueryString,@QueryParam("enum_query_integer")  @ApiParam("Query parameter enum test (double)")  Integer enumQueryInteger,@QueryParam("enum_query_double")  @ApiParam("Query parameter enum test (double)")  Double enumQueryDouble,@FormParam(value = "enum_form_string_array")  List<String> enumFormStringArray,@FormParam(value = "enum_form_string")  String enumFormString);
 
     @DELETE
     @ApiOperation(value = "Fake endpoint to test group parameters (optional)", notes = "Fake endpoint to test group parameters (optional)", tags={ "fake" })
     @ApiResponses(value = { 
         @ApiResponse(code = 400, message = "Someting wrong", response = Void.class) })
-    Response testGroupParameters(@QueryParam("required_string_group") @NotNull   @ApiParam("Required String in group parameters")  Integer requiredStringGroup,@HeaderParam("required_boolean_group") @NotNull    @ApiParam("Required Boolean in group parameters") Boolean requiredBooleanGroup,@QueryParam("required_int64_group") @NotNull   @ApiParam("Required Integer in group parameters")  Long requiredInt64Group,@QueryParam("string_group")   @ApiParam("String in group parameters")  Integer stringGroup,@HeaderParam("boolean_group")    @ApiParam("Boolean in group parameters") Boolean booleanGroup,@QueryParam("int64_group")   @ApiParam("Integer in group parameters")  Long int64Group);
+    Response testGroupParameters(@QueryParam("required_string_group") @NotNull  @ApiParam("Required String in group parameters")  Integer requiredStringGroup,@HeaderParam("required_boolean_group") @NotNull   @ApiParam("Required Boolean in group parameters") Boolean requiredBooleanGroup,@QueryParam("required_int64_group") @NotNull  @ApiParam("Required Integer in group parameters")  Long requiredInt64Group,@QueryParam("string_group")  @ApiParam("String in group parameters")  Integer stringGroup,@HeaderParam("boolean_group")   @ApiParam("Boolean in group parameters") Boolean booleanGroup,@QueryParam("int64_group")  @ApiParam("Integer in group parameters")  Long int64Group);
 
     @POST
     @Path("/inline-additionalProperties")
@@ -137,7 +137,7 @@ import javax.validation.Valid;
     @ApiOperation(value = "", notes = "To test the collection format in query parameters", tags={ "fake" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "Success", response = Void.class) })
-    Response testQueryParameterCollectionFormat(@QueryParam("pipe") @NotNull    List<String> pipe,@QueryParam("ioutil") @NotNull    List<String> ioutil,@QueryParam("http") @NotNull    List<String> http,@QueryParam("url") @NotNull    List<String> url,@QueryParam("context") @NotNull    List<String> context);
+    Response testQueryParameterCollectionFormat(@QueryParam("pipe") @NotNull   List<String> pipe,@QueryParam("ioutil") @NotNull   List<String> ioutil,@QueryParam("http") @NotNull   List<String> http,@QueryParam("url") @NotNull   List<String> url,@QueryParam("context") @NotNull   List<String> context);
 
     @POST
     @Path("/{petId}/uploadImageWithRequiredFile")
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/PetApi.java
index 480057d9367..688f409117a 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/PetApi.java
@@ -42,7 +42,7 @@ import javax.validation.Valid;
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = Void.class),
         @ApiResponse(code = 400, message = "Invalid pet value", response = Void.class) })
-    Response deletePet(@PathParam("petId") @ApiParam("Pet id to delete") Long petId,@HeaderParam("api_key")    String apiKey);
+    Response deletePet(@PathParam("petId") @ApiParam("Pet id to delete") Long petId,@HeaderParam("api_key")   String apiKey);
 
     @GET
     @Path("/findByStatus")
@@ -55,7 +55,7 @@ import javax.validation.Valid;
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = Pet.class, responseContainer = "List"),
         @ApiResponse(code = 400, message = "Invalid status value", response = Void.class, responseContainer = "List") })
-    Response findPetsByStatus(@QueryParam("status") @NotNull   @ApiParam("Status values that need to be considered for filter")  List<String> status);
+    Response findPetsByStatus(@QueryParam("status") @NotNull  @ApiParam("Status values that need to be considered for filter")  List<String> status);
 
     @GET
     @Path("/findByTags")
@@ -68,7 +68,7 @@ import javax.validation.Valid;
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = Pet.class, responseContainer = "Set"),
         @ApiResponse(code = 400, message = "Invalid tag value", response = Void.class, responseContainer = "Set") })
-    Response findPetsByTags(@QueryParam("tags") @NotNull   @ApiParam("Tags to filter by")  Set<String> tags);
+    Response findPetsByTags(@QueryParam("tags") @NotNull  @ApiParam("Tags to filter by")  Set<String> tags);
 
     @GET
     @Path("/{petId}")
@@ -120,5 +120,5 @@ import javax.validation.Valid;
          }, tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    Response uploadFile(@PathParam("petId") @ApiParam("ID of pet to update") Long petId,@FormParam(value = "additionalMetadata")  String additionalMetadata, @FormParam(value = "file") InputStream fileInputStream);
+    Response uploadFile(@PathParam("petId") @ApiParam("ID of pet to update") Long petId,@FormParam(value = "additionalMetadata")  String additionalMetadata, @FormParam(value = "file") InputStream _fileInputStream);
 }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/UserApi.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/UserApi.java
index 77ea16dbeb8..ed2fcd7dc4e 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/api/UserApi.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import java.util.Date;
 import java.util.List;
 import org.openapitools.model.User;
 
@@ -63,7 +64,7 @@ import javax.validation.Valid;
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = String.class),
         @ApiResponse(code = 400, message = "Invalid username/password supplied", response = Void.class) })
-    Response loginUser(@QueryParam("username") @NotNull   @ApiParam("The user name for login")  String username,@QueryParam("password") @NotNull   @ApiParam("The password for login in clear text")  String password);
+    Response loginUser(@QueryParam("username") @NotNull  @ApiParam("The user name for login")  String username,@QueryParam("password") @NotNull  @ApiParam("The password for login in clear text")  String password);
 
     @GET
     @Path("/logout")
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 6b9dcfa1ac6..50c6702c65f 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesAnyType")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesAnyType extends HashMap<String, Object> implements Serializable {
   
   private @Valid String name;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java
index 1b504c15f4e..3b400ed375e 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesArray")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesArray extends HashMap<String, List> implements Serializable {
   
   private @Valid String name;
@@ -37,6 +39,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index d842728a186..e1dbfa0821a 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesBoolean")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesBoolean extends HashMap<String, Boolean> implements Serializable {
   
   private @Valid String name;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
index ab1baad9976..61bec1b6ff4 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -15,9 +15,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesClass")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesClass  implements Serializable {
   
   private @Valid Map<String, String> mapString = new HashMap<String, String>();
@@ -48,6 +50,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapString;
   }
 
+  @JsonProperty("map_string")
   public void setMapString(Map<String, String> mapString) {
     this.mapString = mapString;
   }
@@ -68,6 +71,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapNumber;
   }
 
+  @JsonProperty("map_number")
   public void setMapNumber(Map<String, BigDecimal> mapNumber) {
     this.mapNumber = mapNumber;
   }
@@ -88,6 +92,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapInteger;
   }
 
+  @JsonProperty("map_integer")
   public void setMapInteger(Map<String, Integer> mapInteger) {
     this.mapInteger = mapInteger;
   }
@@ -108,6 +113,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapBoolean;
   }
 
+  @JsonProperty("map_boolean")
   public void setMapBoolean(Map<String, Boolean> mapBoolean) {
     this.mapBoolean = mapBoolean;
   }
@@ -128,6 +134,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapArrayInteger;
   }
 
+  @JsonProperty("map_array_integer")
   public void setMapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
     this.mapArrayInteger = mapArrayInteger;
   }
@@ -148,6 +155,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapArrayAnytype;
   }
 
+  @JsonProperty("map_array_anytype")
   public void setMapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
     this.mapArrayAnytype = mapArrayAnytype;
   }
@@ -168,6 +176,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapMapString;
   }
 
+  @JsonProperty("map_map_string")
   public void setMapMapString(Map<String, Map<String, String>> mapMapString) {
     this.mapMapString = mapMapString;
   }
@@ -188,6 +197,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return mapMapAnytype;
   }
 
+  @JsonProperty("map_map_anytype")
   public void setMapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
     this.mapMapAnytype = mapMapAnytype;
   }
@@ -208,6 +218,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return anytype1;
   }
 
+  @JsonProperty("anytype_1")
   public void setAnytype1(Object anytype1) {
     this.anytype1 = anytype1;
   }
@@ -228,6 +239,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return anytype2;
   }
 
+  @JsonProperty("anytype_2")
   public void setAnytype2(Object anytype2) {
     this.anytype2 = anytype2;
   }
@@ -248,6 +260,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return anytype3;
   }
 
+  @JsonProperty("anytype_3")
   public void setAnytype3(Object anytype3) {
     this.anytype3 = anytype3;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 6f925720aba..fc85a62ad02 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesInteger")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesInteger extends HashMap<String, Integer> implements Serializable {
   
   private @Valid String name;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 884577dcdd0..25852547106 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesNumber")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal> implements Serializable {
   
   private @Valid String name;
@@ -37,6 +39,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java
index cbe4428f3e3..998b85d511d 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesObject")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesObject extends HashMap<String, Map> implements Serializable {
   
   private @Valid String name;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java
index 16f6a60afd1..b317c03b4c0 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("AdditionalPropertiesString")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class AdditionalPropertiesString extends HashMap<String, String> implements Serializable {
   
   private @Valid String name;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Animal.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Animal.java
index 8ddd9ed2f8c..7c6fb6c670a 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Animal.java
@@ -13,6 +13,7 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
@@ -22,6 +23,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 })
 
 
+@JsonTypeName("Animal")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Animal  implements Serializable {
   
   private @Valid String className;
@@ -44,6 +46,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return className;
   }
 
+  @JsonProperty("className")
   public void setClassName(String className) {
     this.className = className;
   }
@@ -64,6 +67,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return color;
   }
 
+  @JsonProperty("color")
   public void setColor(String color) {
     this.color = color;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 9643930053c..cbca7de2f69 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("ArrayOfArrayOfNumberOnly")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ArrayOfArrayOfNumberOnly  implements Serializable {
   
   private @Valid List<List<BigDecimal>> arrayArrayNumber = new ArrayList<List<BigDecimal>>();
@@ -37,6 +39,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayArrayNumber;
   }
 
+  @JsonProperty("ArrayArrayNumber")
   public void setArrayArrayNumber(List<List<BigDecimal>> arrayArrayNumber) {
     this.arrayArrayNumber = arrayArrayNumber;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
index 2c585cdc1e8..ad7cc3db32e 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("ArrayOfNumberOnly")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ArrayOfNumberOnly  implements Serializable {
   
   private @Valid List<BigDecimal> arrayNumber = new ArrayList<BigDecimal>();
@@ -37,6 +39,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayNumber;
   }
 
+  @JsonProperty("ArrayNumber")
   public void setArrayNumber(List<BigDecimal> arrayNumber) {
     this.arrayNumber = arrayNumber;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayTest.java
index edc0b7a9484..f2b7469f65c 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ArrayTest.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("ArrayTest")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ArrayTest  implements Serializable {
   
   private @Valid List<String> arrayOfString = new ArrayList<String>();
@@ -39,6 +41,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayOfString;
   }
 
+  @JsonProperty("array_of_string")
   public void setArrayOfString(List<String> arrayOfString) {
     this.arrayOfString = arrayOfString;
   }
@@ -59,6 +62,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayArrayOfInteger;
   }
 
+  @JsonProperty("array_array_of_integer")
   public void setArrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
     this.arrayArrayOfInteger = arrayArrayOfInteger;
   }
@@ -79,6 +83,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayArrayOfModel;
   }
 
+  @JsonProperty("array_array_of_model")
   public void setArrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCat.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCat.java
index 1a3ddba789b..483c60b3d06 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCat.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("BigCat")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class BigCat extends Cat implements Serializable {
   
 
@@ -69,6 +71,7 @@ public enum KindEnum {
     return kind;
   }
 
+  @JsonProperty("kind")
   public void setKind(KindEnum kind) {
     this.kind = kind;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCatAllOf.java
index 080e86afaca..db687359046 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/BigCatAllOf.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("BigCat_allOf")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class BigCatAllOf  implements Serializable {
   
 
@@ -67,6 +69,7 @@ public enum KindEnum {
     return kind;
   }
 
+  @JsonProperty("kind")
   public void setKind(KindEnum kind) {
     this.kind = kind;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Capitalization.java
index a65c79d984e..59529655970 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Capitalization.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Capitalization")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Capitalization  implements Serializable {
   
   private @Valid String smallCamel;
@@ -39,6 +41,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return smallCamel;
   }
 
+  @JsonProperty("smallCamel")
   public void setSmallCamel(String smallCamel) {
     this.smallCamel = smallCamel;
   }
@@ -59,6 +62,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return capitalCamel;
   }
 
+  @JsonProperty("CapitalCamel")
   public void setCapitalCamel(String capitalCamel) {
     this.capitalCamel = capitalCamel;
   }
@@ -79,6 +83,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return smallSnake;
   }
 
+  @JsonProperty("small_Snake")
   public void setSmallSnake(String smallSnake) {
     this.smallSnake = smallSnake;
   }
@@ -99,6 +104,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return capitalSnake;
   }
 
+  @JsonProperty("Capital_Snake")
   public void setCapitalSnake(String capitalSnake) {
     this.capitalSnake = capitalSnake;
   }
@@ -119,6 +125,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return scAETHFlowPoints;
   }
 
+  @JsonProperty("SCA_ETH_Flow_Points")
   public void setScAETHFlowPoints(String scAETHFlowPoints) {
     this.scAETHFlowPoints = scAETHFlowPoints;
   }
@@ -140,6 +147,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return ATT_NAME;
   }
 
+  @JsonProperty("ATT_NAME")
   public void setATTNAME(String ATT_NAME) {
     this.ATT_NAME = ATT_NAME;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Cat.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Cat.java
index 4cc078e2235..948b28d037a 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Cat.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Cat")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Cat extends Animal implements Serializable {
   
   private @Valid Boolean declawed;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return declawed;
   }
 
+  @JsonProperty("declawed")
   public void setDeclawed(Boolean declawed) {
     this.declawed = declawed;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/CatAllOf.java
index e56df72d3be..b5d2587fe85 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/CatAllOf.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Cat_allOf")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class CatAllOf  implements Serializable {
   
   private @Valid Boolean declawed;
@@ -34,6 +36,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return declawed;
   }
 
+  @JsonProperty("declawed")
   public void setDeclawed(Boolean declawed) {
     this.declawed = declawed;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Category.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Category.java
index 9af6f93c7c4..6d4e8a87992 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Category.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Category")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Category  implements Serializable {
   
   private @Valid Long id;
@@ -35,6 +37,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return id;
   }
 
+  @JsonProperty("id")
   public void setId(Long id) {
     this.id = id;
   }
@@ -56,6 +59,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ClassModel.java
index f050e12bb25..fec3c619257 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ClassModel.java
@@ -11,11 +11,13 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  **/
 @ApiModel(description = "Model for testing model with \"_class\" property")
+@JsonTypeName("ClassModel")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ClassModel  implements Serializable {
   
   private @Valid String propertyClass;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return propertyClass;
   }
 
+  @JsonProperty("_class")
   public void setPropertyClass(String propertyClass) {
     this.propertyClass = propertyClass;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Client.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Client.java
index 4cdbbef940d..74d489b5ace 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Client.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Client")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Client  implements Serializable {
   
   private @Valid String client;
@@ -34,6 +36,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return client;
   }
 
+  @JsonProperty("client")
   public void setClient(String client) {
     this.client = client;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Dog.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Dog.java
index 87c3a825ba8..20599ecebcf 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Dog.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Dog")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Dog extends Animal implements Serializable {
   
   private @Valid String breed;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return breed;
   }
 
+  @JsonProperty("breed")
   public void setBreed(String breed) {
     this.breed = breed;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/DogAllOf.java
index 5496e3c8915..269faf93678 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/DogAllOf.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Dog_allOf")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class DogAllOf  implements Serializable {
   
   private @Valid String breed;
@@ -34,6 +36,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return breed;
   }
 
+  @JsonProperty("breed")
   public void setBreed(String breed) {
     this.breed = breed;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumArrays.java
index fc7770afa09..bf05c76fd9e 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumArrays.java
@@ -13,9 +13,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("EnumArrays")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class EnumArrays  implements Serializable {
   
 
@@ -52,7 +54,7 @@ public enum JustSymbolEnum {
 }
 
   private @Valid JustSymbolEnum justSymbol;
- 
+
 public enum ArrayEnumEnum {
 
     FISH(String.valueOf("fish")), CRAB(String.valueOf("crab"));
@@ -103,6 +105,7 @@ public enum ArrayEnumEnum {
     return justSymbol;
   }
 
+  @JsonProperty("just_symbol")
   public void setJustSymbol(JustSymbolEnum justSymbol) {
     this.justSymbol = justSymbol;
   }
@@ -123,6 +126,7 @@ public enum ArrayEnumEnum {
     return arrayEnum;
   }
 
+  @JsonProperty("array_enum")
   public void setArrayEnum(List<ArrayEnumEnum> arrayEnum) {
     this.arrayEnum = arrayEnum;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumTest.java
index 6c02f0647c9..34ec3b13e07 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/EnumTest.java
@@ -12,9 +12,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Enum_Test")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class EnumTest  implements Serializable {
   
 
@@ -171,6 +173,7 @@ public enum EnumNumberEnum {
     return enumString;
   }
 
+  @JsonProperty("enum_string")
   public void setEnumString(EnumStringEnum enumString) {
     this.enumString = enumString;
   }
@@ -192,6 +195,7 @@ public enum EnumNumberEnum {
     return enumStringRequired;
   }
 
+  @JsonProperty("enum_string_required")
   public void setEnumStringRequired(EnumStringRequiredEnum enumStringRequired) {
     this.enumStringRequired = enumStringRequired;
   }
@@ -212,6 +216,7 @@ public enum EnumNumberEnum {
     return enumInteger;
   }
 
+  @JsonProperty("enum_integer")
   public void setEnumInteger(EnumIntegerEnum enumInteger) {
     this.enumInteger = enumInteger;
   }
@@ -232,6 +237,7 @@ public enum EnumNumberEnum {
     return enumNumber;
   }
 
+  @JsonProperty("enum_number")
   public void setEnumNumber(EnumNumberEnum enumNumber) {
     this.enumNumber = enumNumber;
   }
@@ -252,6 +258,7 @@ public enum EnumNumberEnum {
     return outerEnum;
   }
 
+  @JsonProperty("outerEnum")
   public void setOuterEnum(OuterEnum outerEnum) {
     this.outerEnum = outerEnum;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index b8ba37d5cdc..05ff7b2ea24 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import java.io.Serializable;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -13,18 +14,20 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("FileSchemaTestClass")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class FileSchemaTestClass  implements Serializable {
   
-  private @Valid java.io.File file;
-  private @Valid List<java.io.File> files = new ArrayList<java.io.File>();
+  private @Valid ModelFile _file;
+  private @Valid List<ModelFile> files = new ArrayList<ModelFile>();
 
   /**
    **/
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
@@ -33,17 +36,18 @@ import com.fasterxml.jackson.annotation.JsonValue;
   
   @ApiModelProperty(value = "")
   @JsonProperty("file")
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  @JsonProperty("file")
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 /**
    **/
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
@@ -53,11 +57,12 @@ import com.fasterxml.jackson.annotation.JsonValue;
   
   @ApiModelProperty(value = "")
   @JsonProperty("files")
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  @JsonProperty("files")
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -71,13 +76,13 @@ import com.fasterxml.jackson.annotation.JsonValue;
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
@@ -85,7 +90,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FormatTest.java
index ca11645f9ae..bbb010c5ff1 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/FormatTest.java
@@ -16,9 +16,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("format_test")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class FormatTest  implements Serializable {
   
   private @Valid Integer integer;
@@ -54,6 +56,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return integer;
   }
 
+  @JsonProperty("integer")
   public void setInteger(Integer integer) {
     this.integer = integer;
   }
@@ -76,6 +79,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return int32;
   }
 
+  @JsonProperty("int32")
   public void setInt32(Integer int32) {
     this.int32 = int32;
   }
@@ -96,6 +100,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return int64;
   }
 
+  @JsonProperty("int64")
   public void setInt64(Long int64) {
     this.int64 = int64;
   }
@@ -119,6 +124,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return number;
   }
 
+  @JsonProperty("number")
   public void setNumber(BigDecimal number) {
     this.number = number;
   }
@@ -141,6 +147,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return _float;
   }
 
+  @JsonProperty("float")
   public void setFloat(Float _float) {
     this._float = _float;
   }
@@ -163,6 +170,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return _double;
   }
 
+  @JsonProperty("double")
   public void setDouble(Double _double) {
     this._double = _double;
   }
@@ -183,6 +191,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return string;
   }
 
+  @JsonProperty("string")
   public void setString(String string) {
     this.string = string;
   }
@@ -204,6 +213,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return _byte;
   }
 
+  @JsonProperty("byte")
   public void setByte(byte[] _byte) {
     this._byte = _byte;
   }
@@ -224,6 +234,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return binary;
   }
 
+  @JsonProperty("binary")
   public void setBinary(File binary) {
     this.binary = binary;
   }
@@ -245,6 +256,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return date;
   }
 
+  @JsonProperty("date")
   public void setDate(LocalDate date) {
     this.date = date;
   }
@@ -265,6 +277,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return dateTime;
   }
 
+  @JsonProperty("dateTime")
   public void setDateTime(Date dateTime) {
     this.dateTime = dateTime;
   }
@@ -285,6 +298,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return uuid;
   }
 
+  @JsonProperty("uuid")
   public void setUuid(UUID uuid) {
     this.uuid = uuid;
   }
@@ -306,6 +320,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return password;
   }
 
+  @JsonProperty("password")
   public void setPassword(String password) {
     this.password = password;
   }
@@ -326,6 +341,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return bigDecimal;
   }
 
+  @JsonProperty("BigDecimal")
   public void setBigDecimal(BigDecimal bigDecimal) {
     this.bigDecimal = bigDecimal;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java
index 6438846d569..db68308cdce 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("hasOnlyReadOnly")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class HasOnlyReadOnly  implements Serializable {
   
   private @Valid String bar;
@@ -35,6 +37,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return bar;
   }
 
+  @JsonProperty("bar")
   public void setBar(String bar) {
     this.bar = bar;
   }
@@ -55,6 +58,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return foo;
   }
 
+  @JsonProperty("foo")
   public void setFoo(String foo) {
     this.foo = foo;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MapTest.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MapTest.java
index a8eff4c21b2..f5c57914a90 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MapTest.java
@@ -14,13 +14,15 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("MapTest")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class MapTest  implements Serializable {
   
   private @Valid Map<String, Map<String, String>> mapMapOfString = new HashMap<String, Map<String, String>>();
- 
+
 public enum InnerEnum {
 
     UPPER(String.valueOf("UPPER")), LOWER(String.valueOf("lower"));
@@ -73,6 +75,7 @@ public enum InnerEnum {
     return mapMapOfString;
   }
 
+  @JsonProperty("map_map_of_string")
   public void setMapMapOfString(Map<String, Map<String, String>> mapMapOfString) {
     this.mapMapOfString = mapMapOfString;
   }
@@ -93,6 +96,7 @@ public enum InnerEnum {
     return mapOfEnumString;
   }
 
+  @JsonProperty("map_of_enum_string")
   public void setMapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
     this.mapOfEnumString = mapOfEnumString;
   }
@@ -113,6 +117,7 @@ public enum InnerEnum {
     return directMap;
   }
 
+  @JsonProperty("direct_map")
   public void setDirectMap(Map<String, Boolean> directMap) {
     this.directMap = directMap;
   }
@@ -133,6 +138,7 @@ public enum InnerEnum {
     return indirectMap;
   }
 
+  @JsonProperty("indirect_map")
   public void setIndirectMap(Map<String, Boolean> indirectMap) {
     this.indirectMap = indirectMap;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index aace3762eb9..77464620e9c 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -17,9 +17,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("MixedPropertiesAndAdditionalPropertiesClass")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class MixedPropertiesAndAdditionalPropertiesClass  implements Serializable {
   
   private @Valid UUID uuid;
@@ -42,6 +44,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return uuid;
   }
 
+  @JsonProperty("uuid")
   public void setUuid(UUID uuid) {
     this.uuid = uuid;
   }
@@ -62,6 +65,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return dateTime;
   }
 
+  @JsonProperty("dateTime")
   public void setDateTime(Date dateTime) {
     this.dateTime = dateTime;
   }
@@ -82,6 +86,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return map;
   }
 
+  @JsonProperty("map")
   public void setMap(Map<String, Animal> map) {
     this.map = map;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Model200Response.java
index d96df1aceae..7aeb481a43a 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Model200Response.java
@@ -11,11 +11,13 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 /**
  * Model for testing model name starting with number
  **/
 @ApiModel(description = "Model for testing model name starting with number")
+@JsonTypeName("200_response")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Model200Response  implements Serializable {
   
   private @Valid Integer name;
@@ -37,6 +39,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(Integer name) {
     this.name = name;
   }
@@ -57,6 +60,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return propertyClass;
   }
 
+  @JsonProperty("class")
   public void setPropertyClass(String propertyClass) {
     this.propertyClass = propertyClass;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelApiResponse.java
index 952439560b5..d541b6586f3 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelApiResponse.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("ApiResponse")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelApiResponse  implements Serializable {
   
   private @Valid Integer code;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return code;
   }
 
+  @JsonProperty("code")
   public void setCode(Integer code) {
     this.code = code;
   }
@@ -56,6 +59,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return type;
   }
 
+  @JsonProperty("type")
   public void setType(String type) {
     this.type = type;
   }
@@ -76,6 +80,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return message;
   }
 
+  @JsonProperty("message")
   public void setMessage(String message) {
     this.message = message;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..8ce42cac839
--- /dev/null
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,88 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.*;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ **/
+@ApiModel(description = "Must be named `File` for test.")
+@JsonTypeName("File")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelFile  implements Serializable {
+  
+  private @Valid String sourceURI;
+
+  /**
+   * Test capitalization
+   **/
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  
+
+  
+  @ApiModelProperty(value = "Test capitalization")
+  @JsonProperty("sourceURI")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  @JsonProperty("sourceURI")
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+}
+
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..f09d013e2dc
--- /dev/null
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.*;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+
+
+@JsonTypeName("List")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelList  implements Serializable {
+  
+  private @Valid String _123list;
+
+  /**
+   **/
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  
+
+  
+  @ApiModelProperty(value = "")
+  @JsonProperty("123-list")
+  public String get123list() {
+    return _123list;
+  }
+
+  @JsonProperty("123-list")
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+}
+
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelReturn.java
index 6d6cb5b806f..836ae092d18 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ModelReturn.java
@@ -11,11 +11,13 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 /**
  * Model for testing reserved words
  **/
 @ApiModel(description = "Model for testing reserved words")
+@JsonTypeName("Return")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelReturn  implements Serializable {
   
   private @Valid Integer _return;
@@ -36,6 +38,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return _return;
   }
 
+  @JsonProperty("return")
   public void setReturn(Integer _return) {
     this._return = _return;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Name.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Name.java
index 6fd504dbe9d..54d09365aed 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Name.java
@@ -11,11 +11,13 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 /**
  * Model for testing model name same as property name
  **/
 @ApiModel(description = "Model for testing model name same as property name")
+@JsonTypeName("Name")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Name  implements Serializable {
   
   private @Valid Integer name;
@@ -40,6 +42,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(Integer name) {
     this.name = name;
   }
@@ -60,6 +63,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return snakeCase;
   }
 
+  @JsonProperty("snake_case")
   public void setSnakeCase(Integer snakeCase) {
     this.snakeCase = snakeCase;
   }
@@ -80,6 +84,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return property;
   }
 
+  @JsonProperty("property")
   public void setProperty(String property) {
     this.property = property;
   }
@@ -100,6 +105,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return _123number;
   }
 
+  @JsonProperty("123Number")
   public void set123number(Integer _123number) {
     this._123number = _123number;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/NumberOnly.java
index 07a70cd9da5..9ea507266dc 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/NumberOnly.java
@@ -12,9 +12,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("NumberOnly")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class NumberOnly  implements Serializable {
   
   private @Valid BigDecimal justNumber;
@@ -35,6 +37,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return justNumber;
   }
 
+  @JsonProperty("JustNumber")
   public void setJustNumber(BigDecimal justNumber) {
     this.justNumber = justNumber;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Order.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Order.java
index 9929a0d5043..e67d3772f9d 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Order.java
@@ -12,9 +12,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Order")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Order  implements Serializable {
   
   private @Valid Long id;
@@ -73,6 +75,7 @@ public enum StatusEnum {
     return id;
   }
 
+  @JsonProperty("id")
   public void setId(Long id) {
     this.id = id;
   }
@@ -93,6 +96,7 @@ public enum StatusEnum {
     return petId;
   }
 
+  @JsonProperty("petId")
   public void setPetId(Long petId) {
     this.petId = petId;
   }
@@ -113,6 +117,7 @@ public enum StatusEnum {
     return quantity;
   }
 
+  @JsonProperty("quantity")
   public void setQuantity(Integer quantity) {
     this.quantity = quantity;
   }
@@ -133,6 +138,7 @@ public enum StatusEnum {
     return shipDate;
   }
 
+  @JsonProperty("shipDate")
   public void setShipDate(Date shipDate) {
     this.shipDate = shipDate;
   }
@@ -154,6 +160,7 @@ public enum StatusEnum {
     return status;
   }
 
+  @JsonProperty("status")
   public void setStatus(StatusEnum status) {
     this.status = status;
   }
@@ -174,6 +181,7 @@ public enum StatusEnum {
     return complete;
   }
 
+  @JsonProperty("complete")
   public void setComplete(Boolean complete) {
     this.complete = complete;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/OuterComposite.java
index 6e34a0e0a80..95ff03416bb 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/OuterComposite.java
@@ -12,9 +12,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("OuterComposite")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class OuterComposite  implements Serializable {
   
   private @Valid BigDecimal myNumber;
@@ -37,6 +39,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return myNumber;
   }
 
+  @JsonProperty("my_number")
   public void setMyNumber(BigDecimal myNumber) {
     this.myNumber = myNumber;
   }
@@ -57,6 +60,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return myString;
   }
 
+  @JsonProperty("my_string")
   public void setMyString(String myString) {
     this.myString = myString;
   }
@@ -77,6 +81,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return myBoolean;
   }
 
+  @JsonProperty("my_boolean")
   public void setMyBoolean(Boolean myBoolean) {
     this.myBoolean = myBoolean;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Pet.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Pet.java
index 63e1d1abbd3..7162d94b3b8 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Pet.java
@@ -1,5 +1,6 @@
 package org.openapitools.model;
 
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
@@ -17,9 +18,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Pet")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Pet  implements Serializable {
   
   private @Valid Long id;
@@ -78,6 +81,7 @@ public enum StatusEnum {
     return id;
   }
 
+  @JsonProperty("id")
   public void setId(Long id) {
     this.id = id;
   }
@@ -98,6 +102,7 @@ public enum StatusEnum {
     return category;
   }
 
+  @JsonProperty("category")
   public void setCategory(Category category) {
     this.category = category;
   }
@@ -119,6 +124,7 @@ public enum StatusEnum {
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
@@ -140,6 +146,8 @@ public enum StatusEnum {
     return photoUrls;
   }
 
+  @JsonProperty("photoUrls")
+  @JsonDeserialize(as = LinkedHashSet.class)
   public void setPhotoUrls(Set<String> photoUrls) {
     this.photoUrls = photoUrls;
   }
@@ -160,6 +168,7 @@ public enum StatusEnum {
     return tags;
   }
 
+  @JsonProperty("tags")
   public void setTags(List<Tag> tags) {
     this.tags = tags;
   }
@@ -181,6 +190,7 @@ public enum StatusEnum {
     return status;
   }
 
+  @JsonProperty("status")
   public void setStatus(StatusEnum status) {
     this.status = status;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ReadOnlyFirst.java
index 72efcebf52c..71451f9cf68 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/ReadOnlyFirst.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("ReadOnlyFirst")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ReadOnlyFirst  implements Serializable {
   
   private @Valid String bar;
@@ -35,6 +37,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return bar;
   }
 
+  @JsonProperty("bar")
   public void setBar(String bar) {
     this.bar = bar;
   }
@@ -55,6 +58,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return baz;
   }
 
+  @JsonProperty("baz")
   public void setBaz(String baz) {
     this.baz = baz;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/SpecialModelName.java
index ece6b68dc3a..0340c7996ab 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/SpecialModelName.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("$special[model.name]")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class SpecialModelName  implements Serializable {
   
   private @Valid Long $specialPropertyName;
@@ -34,6 +36,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return $specialPropertyName;
   }
 
+  @JsonProperty("$special[property.name]")
   public void set$SpecialPropertyName(Long $specialPropertyName) {
     this.$specialPropertyName = $specialPropertyName;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Tag.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Tag.java
index 1c7c5198894..db7d608abd5 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/Tag.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("Tag")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class Tag  implements Serializable {
   
   private @Valid Long id;
@@ -35,6 +37,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return id;
   }
 
+  @JsonProperty("id")
   public void setId(Long id) {
     this.id = id;
   }
@@ -55,6 +58,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return name;
   }
 
+  @JsonProperty("name")
   public void setName(String name) {
     this.name = name;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderDefault.java
index 502c22c455e..a093d79a6d6 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderDefault.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("TypeHolderDefault")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class TypeHolderDefault  implements Serializable {
   
   private @Valid String stringItem = "what";
@@ -42,6 +44,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return stringItem;
   }
 
+  @JsonProperty("string_item")
   public void setStringItem(String stringItem) {
     this.stringItem = stringItem;
   }
@@ -63,6 +66,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return numberItem;
   }
 
+  @JsonProperty("number_item")
   public void setNumberItem(BigDecimal numberItem) {
     this.numberItem = numberItem;
   }
@@ -84,6 +88,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return integerItem;
   }
 
+  @JsonProperty("integer_item")
   public void setIntegerItem(Integer integerItem) {
     this.integerItem = integerItem;
   }
@@ -105,6 +110,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return boolItem;
   }
 
+  @JsonProperty("bool_item")
   public void setBoolItem(Boolean boolItem) {
     this.boolItem = boolItem;
   }
@@ -126,6 +132,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayItem;
   }
 
+  @JsonProperty("array_item")
   public void setArrayItem(List<Integer> arrayItem) {
     this.arrayItem = arrayItem;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderExample.java
index fb31859dedd..daaffc8af45 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/TypeHolderExample.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("TypeHolderExample")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class TypeHolderExample  implements Serializable {
   
   private @Valid String stringItem;
@@ -43,6 +45,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return stringItem;
   }
 
+  @JsonProperty("string_item")
   public void setStringItem(String stringItem) {
     this.stringItem = stringItem;
   }
@@ -64,6 +67,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return numberItem;
   }
 
+  @JsonProperty("number_item")
   public void setNumberItem(BigDecimal numberItem) {
     this.numberItem = numberItem;
   }
@@ -85,6 +89,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return floatItem;
   }
 
+  @JsonProperty("float_item")
   public void setFloatItem(Float floatItem) {
     this.floatItem = floatItem;
   }
@@ -106,6 +111,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return integerItem;
   }
 
+  @JsonProperty("integer_item")
   public void setIntegerItem(Integer integerItem) {
     this.integerItem = integerItem;
   }
@@ -127,6 +133,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return boolItem;
   }
 
+  @JsonProperty("bool_item")
   public void setBoolItem(Boolean boolItem) {
     this.boolItem = boolItem;
   }
@@ -148,6 +155,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return arrayItem;
   }
 
+  @JsonProperty("array_item")
   public void setArrayItem(List<Integer> arrayItem) {
     this.arrayItem = arrayItem;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/User.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/User.java
index ad16074f63b..271676fb2e0 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/User.java
@@ -11,9 +11,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("User")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class User  implements Serializable {
   
   private @Valid Long id;
@@ -41,6 +43,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return id;
   }
 
+  @JsonProperty("id")
   public void setId(Long id) {
     this.id = id;
   }
@@ -61,6 +64,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return username;
   }
 
+  @JsonProperty("username")
   public void setUsername(String username) {
     this.username = username;
   }
@@ -81,6 +85,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return firstName;
   }
 
+  @JsonProperty("firstName")
   public void setFirstName(String firstName) {
     this.firstName = firstName;
   }
@@ -101,6 +106,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return lastName;
   }
 
+  @JsonProperty("lastName")
   public void setLastName(String lastName) {
     this.lastName = lastName;
   }
@@ -121,6 +127,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return email;
   }
 
+  @JsonProperty("email")
   public void setEmail(String email) {
     this.email = email;
   }
@@ -141,6 +148,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return password;
   }
 
+  @JsonProperty("password")
   public void setPassword(String password) {
     this.password = password;
   }
@@ -161,6 +169,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return phone;
   }
 
+  @JsonProperty("phone")
   public void setPhone(String phone) {
     this.phone = phone;
   }
@@ -182,6 +191,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return userStatus;
   }
 
+  @JsonProperty("userStatus")
   public void setUserStatus(Integer userStatus) {
     this.userStatus = userStatus;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/XmlItem.java
index 15a5d35673f..241ebb4e1bc 100644
--- a/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/jaxrs-spec-interface-response/src/gen/java/org/openapitools/model/XmlItem.java
@@ -14,9 +14,11 @@ import java.util.Objects;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
 
 
 
+@JsonTypeName("XmlItem")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class XmlItem  implements Serializable {
   
   private @Valid String attributeString;
@@ -65,6 +67,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return attributeString;
   }
 
+  @JsonProperty("attribute_string")
   public void setAttributeString(String attributeString) {
     this.attributeString = attributeString;
   }
@@ -85,6 +88,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return attributeNumber;
   }
 
+  @JsonProperty("attribute_number")
   public void setAttributeNumber(BigDecimal attributeNumber) {
     this.attributeNumber = attributeNumber;
   }
@@ -105,6 +109,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return attributeInteger;
   }
 
+  @JsonProperty("attribute_integer")
   public void setAttributeInteger(Integer attributeInteger) {
     this.attributeInteger = attributeInteger;
   }
@@ -125,6 +130,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return attributeBoolean;
   }
 
+  @JsonProperty("attribute_boolean")
   public void setAttributeBoolean(Boolean attributeBoolean) {
     this.attributeBoolean = attributeBoolean;
   }
@@ -145,6 +151,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return wrappedArray;
   }
 
+  @JsonProperty("wrapped_array")
   public void setWrappedArray(List<Integer> wrappedArray) {
     this.wrappedArray = wrappedArray;
   }
@@ -165,6 +172,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return nameString;
   }
 
+  @JsonProperty("name_string")
   public void setNameString(String nameString) {
     this.nameString = nameString;
   }
@@ -185,6 +193,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return nameNumber;
   }
 
+  @JsonProperty("name_number")
   public void setNameNumber(BigDecimal nameNumber) {
     this.nameNumber = nameNumber;
   }
@@ -205,6 +214,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return nameInteger;
   }
 
+  @JsonProperty("name_integer")
   public void setNameInteger(Integer nameInteger) {
     this.nameInteger = nameInteger;
   }
@@ -225,6 +235,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return nameBoolean;
   }
 
+  @JsonProperty("name_boolean")
   public void setNameBoolean(Boolean nameBoolean) {
     this.nameBoolean = nameBoolean;
   }
@@ -245,6 +256,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return nameArray;
   }
 
+  @JsonProperty("name_array")
   public void setNameArray(List<Integer> nameArray) {
     this.nameArray = nameArray;
   }
@@ -265,6 +277,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return nameWrappedArray;
   }
 
+  @JsonProperty("name_wrapped_array")
   public void setNameWrappedArray(List<Integer> nameWrappedArray) {
     this.nameWrappedArray = nameWrappedArray;
   }
@@ -285,6 +298,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixString;
   }
 
+  @JsonProperty("prefix_string")
   public void setPrefixString(String prefixString) {
     this.prefixString = prefixString;
   }
@@ -305,6 +319,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNumber;
   }
 
+  @JsonProperty("prefix_number")
   public void setPrefixNumber(BigDecimal prefixNumber) {
     this.prefixNumber = prefixNumber;
   }
@@ -325,6 +340,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixInteger;
   }
 
+  @JsonProperty("prefix_integer")
   public void setPrefixInteger(Integer prefixInteger) {
     this.prefixInteger = prefixInteger;
   }
@@ -345,6 +361,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixBoolean;
   }
 
+  @JsonProperty("prefix_boolean")
   public void setPrefixBoolean(Boolean prefixBoolean) {
     this.prefixBoolean = prefixBoolean;
   }
@@ -365,6 +382,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixArray;
   }
 
+  @JsonProperty("prefix_array")
   public void setPrefixArray(List<Integer> prefixArray) {
     this.prefixArray = prefixArray;
   }
@@ -385,6 +403,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixWrappedArray;
   }
 
+  @JsonProperty("prefix_wrapped_array")
   public void setPrefixWrappedArray(List<Integer> prefixWrappedArray) {
     this.prefixWrappedArray = prefixWrappedArray;
   }
@@ -405,6 +424,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return namespaceString;
   }
 
+  @JsonProperty("namespace_string")
   public void setNamespaceString(String namespaceString) {
     this.namespaceString = namespaceString;
   }
@@ -425,6 +445,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return namespaceNumber;
   }
 
+  @JsonProperty("namespace_number")
   public void setNamespaceNumber(BigDecimal namespaceNumber) {
     this.namespaceNumber = namespaceNumber;
   }
@@ -445,6 +466,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return namespaceInteger;
   }
 
+  @JsonProperty("namespace_integer")
   public void setNamespaceInteger(Integer namespaceInteger) {
     this.namespaceInteger = namespaceInteger;
   }
@@ -465,6 +487,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return namespaceBoolean;
   }
 
+  @JsonProperty("namespace_boolean")
   public void setNamespaceBoolean(Boolean namespaceBoolean) {
     this.namespaceBoolean = namespaceBoolean;
   }
@@ -485,6 +508,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return namespaceArray;
   }
 
+  @JsonProperty("namespace_array")
   public void setNamespaceArray(List<Integer> namespaceArray) {
     this.namespaceArray = namespaceArray;
   }
@@ -505,6 +529,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return namespaceWrappedArray;
   }
 
+  @JsonProperty("namespace_wrapped_array")
   public void setNamespaceWrappedArray(List<Integer> namespaceWrappedArray) {
     this.namespaceWrappedArray = namespaceWrappedArray;
   }
@@ -525,6 +550,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNsString;
   }
 
+  @JsonProperty("prefix_ns_string")
   public void setPrefixNsString(String prefixNsString) {
     this.prefixNsString = prefixNsString;
   }
@@ -545,6 +571,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNsNumber;
   }
 
+  @JsonProperty("prefix_ns_number")
   public void setPrefixNsNumber(BigDecimal prefixNsNumber) {
     this.prefixNsNumber = prefixNsNumber;
   }
@@ -565,6 +592,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNsInteger;
   }
 
+  @JsonProperty("prefix_ns_integer")
   public void setPrefixNsInteger(Integer prefixNsInteger) {
     this.prefixNsInteger = prefixNsInteger;
   }
@@ -585,6 +613,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNsBoolean;
   }
 
+  @JsonProperty("prefix_ns_boolean")
   public void setPrefixNsBoolean(Boolean prefixNsBoolean) {
     this.prefixNsBoolean = prefixNsBoolean;
   }
@@ -605,6 +634,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNsArray;
   }
 
+  @JsonProperty("prefix_ns_array")
   public void setPrefixNsArray(List<Integer> prefixNsArray) {
     this.prefixNsArray = prefixNsArray;
   }
@@ -625,6 +655,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
     return prefixNsWrappedArray;
   }
 
+  @JsonProperty("prefix_ns_wrapped_array")
   public void setPrefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
diff --git a/samples/server/petstore/jaxrs-spec-interface/.openapi-generator/FILES b/samples/server/petstore/jaxrs-spec-interface/.openapi-generator/FILES
index 2ea098090a4..912cd6039b7 100644
--- a/samples/server/petstore/jaxrs-spec-interface/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-spec-interface/.openapi-generator/FILES
@@ -38,6 +38,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/api/PetApi.java
index d8d6ac71078..075d6931c38 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/api/PetApi.java
@@ -120,5 +120,5 @@ import javax.validation.Valid;
          }, tags={ "pet" })
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class) })
-    ModelApiResponse uploadFile(@PathParam("petId") @ApiParam("ID of pet to update") Long petId,@FormParam(value = "additionalMetadata")  String additionalMetadata, @FormParam(value = "file") InputStream fileInputStream);
+    ModelApiResponse uploadFile(@PathParam("petId") @ApiParam("ID of pet to update") Long petId,@FormParam(value = "additionalMetadata")  String additionalMetadata, @FormParam(value = "file") InputStream _fileInputStream);
 }
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
index 61bec1b6ff4..4ebb303b837 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -55,6 +55,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapString = mapString;
   }
 
+  public AdditionalPropertiesClass putMapStringItem(String key, String mapStringItem) {
+    if (this.mapString == null) {
+      this.mapString = new HashMap<String, String>();
+    }
+
+    this.mapString.put(key, mapStringItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapStringItem(String mapStringItem) {
+    if (mapStringItem != null && this.mapString != null) {
+      this.mapString.remove(mapStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapNumber(Map<String, BigDecimal> mapNumber) {
@@ -76,6 +92,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapNumber = mapNumber;
   }
 
+  public AdditionalPropertiesClass putMapNumberItem(String key, BigDecimal mapNumberItem) {
+    if (this.mapNumber == null) {
+      this.mapNumber = new HashMap<String, BigDecimal>();
+    }
+
+    this.mapNumber.put(key, mapNumberItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapNumberItem(BigDecimal mapNumberItem) {
+    if (mapNumberItem != null && this.mapNumber != null) {
+      this.mapNumber.remove(mapNumberItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapInteger(Map<String, Integer> mapInteger) {
@@ -97,6 +129,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapInteger = mapInteger;
   }
 
+  public AdditionalPropertiesClass putMapIntegerItem(String key, Integer mapIntegerItem) {
+    if (this.mapInteger == null) {
+      this.mapInteger = new HashMap<String, Integer>();
+    }
+
+    this.mapInteger.put(key, mapIntegerItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapIntegerItem(Integer mapIntegerItem) {
+    if (mapIntegerItem != null && this.mapInteger != null) {
+      this.mapInteger.remove(mapIntegerItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapBoolean(Map<String, Boolean> mapBoolean) {
@@ -118,6 +166,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapBoolean = mapBoolean;
   }
 
+  public AdditionalPropertiesClass putMapBooleanItem(String key, Boolean mapBooleanItem) {
+    if (this.mapBoolean == null) {
+      this.mapBoolean = new HashMap<String, Boolean>();
+    }
+
+    this.mapBoolean.put(key, mapBooleanItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapBooleanItem(Boolean mapBooleanItem) {
+    if (mapBooleanItem != null && this.mapBoolean != null) {
+      this.mapBoolean.remove(mapBooleanItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
@@ -139,6 +203,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapArrayInteger = mapArrayInteger;
   }
 
+  public AdditionalPropertiesClass putMapArrayIntegerItem(String key, List<Integer> mapArrayIntegerItem) {
+    if (this.mapArrayInteger == null) {
+      this.mapArrayInteger = new HashMap<String, List<Integer>>();
+    }
+
+    this.mapArrayInteger.put(key, mapArrayIntegerItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapArrayIntegerItem(List<Integer> mapArrayIntegerItem) {
+    if (mapArrayIntegerItem != null && this.mapArrayInteger != null) {
+      this.mapArrayInteger.remove(mapArrayIntegerItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
@@ -160,6 +240,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapArrayAnytype = mapArrayAnytype;
   }
 
+  public AdditionalPropertiesClass putMapArrayAnytypeItem(String key, List<Object> mapArrayAnytypeItem) {
+    if (this.mapArrayAnytype == null) {
+      this.mapArrayAnytype = new HashMap<String, List<Object>>();
+    }
+
+    this.mapArrayAnytype.put(key, mapArrayAnytypeItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapArrayAnytypeItem(List<Object> mapArrayAnytypeItem) {
+    if (mapArrayAnytypeItem != null && this.mapArrayAnytype != null) {
+      this.mapArrayAnytype.remove(mapArrayAnytypeItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapMapString(Map<String, Map<String, String>> mapMapString) {
@@ -181,6 +277,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapMapString = mapMapString;
   }
 
+  public AdditionalPropertiesClass putMapMapStringItem(String key, Map<String, String> mapMapStringItem) {
+    if (this.mapMapString == null) {
+      this.mapMapString = new HashMap<String, Map<String, String>>();
+    }
+
+    this.mapMapString.put(key, mapMapStringItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapMapStringItem(Map<String, String> mapMapStringItem) {
+    if (mapMapStringItem != null && this.mapMapString != null) {
+      this.mapMapString.remove(mapMapStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
@@ -202,6 +314,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapMapAnytype = mapMapAnytype;
   }
 
+  public AdditionalPropertiesClass putMapMapAnytypeItem(String key, Map<String, Object> mapMapAnytypeItem) {
+    if (this.mapMapAnytype == null) {
+      this.mapMapAnytype = new HashMap<String, Map<String, Object>>();
+    }
+
+    this.mapMapAnytype.put(key, mapMapAnytypeItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapMapAnytypeItem(Map<String, Object> mapMapAnytypeItem) {
+    if (mapMapAnytypeItem != null && this.mapMapAnytype != null) {
+      this.mapMapAnytype.remove(mapMapAnytypeItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass anytype1(Object anytype1) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index cbca7de2f69..e4dc1fd6837 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -44,6 +44,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
+  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (this.arrayArrayNumber == null) {
+      this.arrayArrayNumber = new ArrayList<List<BigDecimal>>();
+    }
+
+    this.arrayArrayNumber.add(arrayArrayNumberItem);
+    return this;
+  }
+
+  public ArrayOfArrayOfNumberOnly removeArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (arrayArrayNumberItem != null && this.arrayArrayNumber != null) {
+      this.arrayArrayNumber.remove(arrayArrayNumberItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
index ad7cc3db32e..19e29e9703b 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -44,6 +44,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayNumber = arrayNumber;
   }
 
+  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (this.arrayNumber == null) {
+      this.arrayNumber = new ArrayList<BigDecimal>();
+    }
+
+    this.arrayNumber.add(arrayNumberItem);
+    return this;
+  }
+
+  public ArrayOfNumberOnly removeArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (arrayNumberItem != null && this.arrayNumber != null) {
+      this.arrayNumber.remove(arrayNumberItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayTest.java
index f2b7469f65c..bda8bb29dc8 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ArrayTest.java
@@ -46,6 +46,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayOfString = arrayOfString;
   }
 
+  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+    if (this.arrayOfString == null) {
+      this.arrayOfString = new ArrayList<String>();
+    }
+
+    this.arrayOfString.add(arrayOfStringItem);
+    return this;
+  }
+
+  public ArrayTest removeArrayOfStringItem(String arrayOfStringItem) {
+    if (arrayOfStringItem != null && this.arrayOfString != null) {
+      this.arrayOfString.remove(arrayOfStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
@@ -67,6 +83,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayArrayOfInteger = arrayArrayOfInteger;
   }
 
+  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (this.arrayArrayOfInteger == null) {
+      this.arrayArrayOfInteger = new ArrayList<List<Long>>();
+    }
+
+    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+    return this;
+  }
+
+  public ArrayTest removeArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (arrayArrayOfIntegerItem != null && this.arrayArrayOfInteger != null) {
+      this.arrayArrayOfInteger.remove(arrayArrayOfIntegerItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
@@ -88,6 +120,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
+  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (this.arrayArrayOfModel == null) {
+      this.arrayArrayOfModel = new ArrayList<List<ReadOnlyFirst>>();
+    }
+
+    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+    return this;
+  }
+
+  public ArrayTest removeArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (arrayArrayOfModelItem != null && this.arrayArrayOfModel != null) {
+      this.arrayArrayOfModel.remove(arrayArrayOfModelItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/EnumArrays.java
index bf05c76fd9e..f9f302e48cc 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/EnumArrays.java
@@ -131,6 +131,22 @@ public enum ArrayEnumEnum {
     this.arrayEnum = arrayEnum;
   }
 
+  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (this.arrayEnum == null) {
+      this.arrayEnum = new ArrayList<ArrayEnumEnum>();
+    }
+
+    this.arrayEnum.add(arrayEnumItem);
+    return this;
+  }
+
+  public EnumArrays removeArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (arrayEnumItem != null && this.arrayEnum != null) {
+      this.arrayEnum.remove(arrayEnumItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index 3896abfe4ec..6828ddc9bd4 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import java.io.Serializable;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -20,13 +21,13 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @JsonTypeName("FileSchemaTestClass")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class FileSchemaTestClass  implements Serializable {
   
-  private @Valid java.io.File file;
-  private @Valid List<java.io.File> files = new ArrayList<java.io.File>();
+  private @Valid ModelFile _file;
+  private @Valid List<ModelFile> files = new ArrayList<ModelFile>();
 
   /**
    **/
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
@@ -35,18 +36,18 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   
   @ApiModelProperty(value = "")
   @JsonProperty("file")
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
   @JsonProperty("file")
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 /**
    **/
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
@@ -56,15 +57,31 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   
   @ApiModelProperty(value = "")
   @JsonProperty("files")
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
   @JsonProperty("files")
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
+    if (this.files == null) {
+      this.files = new ArrayList<ModelFile>();
+    }
+
+    this.files.add(filesItem);
+    return this;
+  }
+
+  public FileSchemaTestClass removeFilesItem(ModelFile filesItem) {
+    if (filesItem != null && this.files != null) {
+      this.files.remove(filesItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
@@ -75,13 +92,13 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
@@ -89,7 +106,7 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MapTest.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MapTest.java
index f5c57914a90..fe54c2dbaf1 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MapTest.java
@@ -80,6 +80,22 @@ public enum InnerEnum {
     this.mapMapOfString = mapMapOfString;
   }
 
+  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+    if (this.mapMapOfString == null) {
+      this.mapMapOfString = new HashMap<String, Map<String, String>>();
+    }
+
+    this.mapMapOfString.put(key, mapMapOfStringItem);
+    return this;
+  }
+
+  public MapTest removeMapMapOfStringItem(Map<String, String> mapMapOfStringItem) {
+    if (mapMapOfStringItem != null && this.mapMapOfString != null) {
+      this.mapMapOfString.remove(mapMapOfStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
@@ -101,6 +117,22 @@ public enum InnerEnum {
     this.mapOfEnumString = mapOfEnumString;
   }
 
+  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+    if (this.mapOfEnumString == null) {
+      this.mapOfEnumString = new HashMap<String, InnerEnum>();
+    }
+
+    this.mapOfEnumString.put(key, mapOfEnumStringItem);
+    return this;
+  }
+
+  public MapTest removeMapOfEnumStringItem(InnerEnum mapOfEnumStringItem) {
+    if (mapOfEnumStringItem != null && this.mapOfEnumString != null) {
+      this.mapOfEnumString.remove(mapOfEnumStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public MapTest directMap(Map<String, Boolean> directMap) {
@@ -122,6 +154,22 @@ public enum InnerEnum {
     this.directMap = directMap;
   }
 
+  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+    if (this.directMap == null) {
+      this.directMap = new HashMap<String, Boolean>();
+    }
+
+    this.directMap.put(key, directMapItem);
+    return this;
+  }
+
+  public MapTest removeDirectMapItem(Boolean directMapItem) {
+    if (directMapItem != null && this.directMap != null) {
+      this.directMap.remove(directMapItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public MapTest indirectMap(Map<String, Boolean> indirectMap) {
@@ -143,6 +191,22 @@ public enum InnerEnum {
     this.indirectMap = indirectMap;
   }
 
+  public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
+    if (this.indirectMap == null) {
+      this.indirectMap = new HashMap<String, Boolean>();
+    }
+
+    this.indirectMap.put(key, indirectMapItem);
+    return this;
+  }
+
+  public MapTest removeIndirectMapItem(Boolean indirectMapItem) {
+    if (indirectMapItem != null && this.indirectMap != null) {
+      this.indirectMap.remove(indirectMapItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 77464620e9c..54bbb7ca2f0 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -91,6 +91,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.map = map;
   }
 
+  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+    if (this.map == null) {
+      this.map = new HashMap<String, Animal>();
+    }
+
+    this.map.put(key, mapItem);
+    return this;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass removeMapItem(Animal mapItem) {
+    if (mapItem != null && this.map != null) {
+      this.map.remove(mapItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..8ce42cac839
--- /dev/null
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,88 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.*;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ **/
+@ApiModel(description = "Must be named `File` for test.")
+@JsonTypeName("File")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelFile  implements Serializable {
+  
+  private @Valid String sourceURI;
+
+  /**
+   * Test capitalization
+   **/
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  
+
+  
+  @ApiModelProperty(value = "Test capitalization")
+  @JsonProperty("sourceURI")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  @JsonProperty("sourceURI")
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+}
+
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..f09d013e2dc
--- /dev/null
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.*;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+
+
+@JsonTypeName("List")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelList  implements Serializable {
+  
+  private @Valid String _123list;
+
+  /**
+   **/
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  
+
+  
+  @ApiModelProperty(value = "")
+  @JsonProperty("123-list")
+  public String get123list() {
+    return _123list;
+  }
+
+  @JsonProperty("123-list")
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+}
+
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/Pet.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/Pet.java
index 7162d94b3b8..b35574db4cd 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/Pet.java
@@ -152,6 +152,22 @@ public enum StatusEnum {
     this.photoUrls = photoUrls;
   }
 
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    if (this.photoUrls == null) {
+      this.photoUrls = new LinkedHashSet<String>();
+    }
+
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+  public Pet removePhotoUrlsItem(String photoUrlsItem) {
+    if (photoUrlsItem != null && this.photoUrls != null) {
+      this.photoUrls.remove(photoUrlsItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public Pet tags(List<Tag> tags) {
@@ -173,6 +189,22 @@ public enum StatusEnum {
     this.tags = tags;
   }
 
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<Tag>();
+    }
+
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+  public Pet removeTagsItem(Tag tagsItem) {
+    if (tagsItem != null && this.tags != null) {
+      this.tags.remove(tagsItem);
+    }
+
+    return this;
+  }
 /**
    * pet status in the store
    **/
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderDefault.java
index a093d79a6d6..1d7658a94fa 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderDefault.java
@@ -137,6 +137,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayItem = arrayItem;
   }
 
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    if (this.arrayItem == null) {
+      this.arrayItem = new ArrayList<Integer>();
+    }
+
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+  public TypeHolderDefault removeArrayItemItem(Integer arrayItemItem) {
+    if (arrayItemItem != null && this.arrayItem != null) {
+      this.arrayItem.remove(arrayItemItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderExample.java
index daaffc8af45..cdb7058acec 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/TypeHolderExample.java
@@ -160,6 +160,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayItem = arrayItem;
   }
 
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    if (this.arrayItem == null) {
+      this.arrayItem = new ArrayList<Integer>();
+    }
+
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+  public TypeHolderExample removeArrayItemItem(Integer arrayItemItem) {
+    if (arrayItemItem != null && this.arrayItem != null) {
+      this.arrayItem.remove(arrayItemItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/XmlItem.java
index 241ebb4e1bc..8e593b39392 100644
--- a/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/jaxrs-spec-interface/src/gen/java/org/openapitools/model/XmlItem.java
@@ -156,6 +156,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.wrappedArray = wrappedArray;
   }
 
+  public XmlItem addWrappedArrayItem(Integer wrappedArrayItem) {
+    if (this.wrappedArray == null) {
+      this.wrappedArray = new ArrayList<Integer>();
+    }
+
+    this.wrappedArray.add(wrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removeWrappedArrayItem(Integer wrappedArrayItem) {
+    if (wrappedArrayItem != null && this.wrappedArray != null) {
+      this.wrappedArray.remove(wrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem nameString(String nameString) {
@@ -261,6 +277,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.nameArray = nameArray;
   }
 
+  public XmlItem addNameArrayItem(Integer nameArrayItem) {
+    if (this.nameArray == null) {
+      this.nameArray = new ArrayList<Integer>();
+    }
+
+    this.nameArray.add(nameArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNameArrayItem(Integer nameArrayItem) {
+    if (nameArrayItem != null && this.nameArray != null) {
+      this.nameArray.remove(nameArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem nameWrappedArray(List<Integer> nameWrappedArray) {
@@ -282,6 +314,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.nameWrappedArray = nameWrappedArray;
   }
 
+  public XmlItem addNameWrappedArrayItem(Integer nameWrappedArrayItem) {
+    if (this.nameWrappedArray == null) {
+      this.nameWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.nameWrappedArray.add(nameWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNameWrappedArrayItem(Integer nameWrappedArrayItem) {
+    if (nameWrappedArrayItem != null && this.nameWrappedArray != null) {
+      this.nameWrappedArray.remove(nameWrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixString(String prefixString) {
@@ -387,6 +435,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixArray = prefixArray;
   }
 
+  public XmlItem addPrefixArrayItem(Integer prefixArrayItem) {
+    if (this.prefixArray == null) {
+      this.prefixArray = new ArrayList<Integer>();
+    }
+
+    this.prefixArray.add(prefixArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixArrayItem(Integer prefixArrayItem) {
+    if (prefixArrayItem != null && this.prefixArray != null) {
+      this.prefixArray.remove(prefixArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixWrappedArray(List<Integer> prefixWrappedArray) {
@@ -408,6 +472,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixWrappedArray = prefixWrappedArray;
   }
 
+  public XmlItem addPrefixWrappedArrayItem(Integer prefixWrappedArrayItem) {
+    if (this.prefixWrappedArray == null) {
+      this.prefixWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.prefixWrappedArray.add(prefixWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixWrappedArrayItem(Integer prefixWrappedArrayItem) {
+    if (prefixWrappedArrayItem != null && this.prefixWrappedArray != null) {
+      this.prefixWrappedArray.remove(prefixWrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem namespaceString(String namespaceString) {
@@ -513,6 +593,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.namespaceArray = namespaceArray;
   }
 
+  public XmlItem addNamespaceArrayItem(Integer namespaceArrayItem) {
+    if (this.namespaceArray == null) {
+      this.namespaceArray = new ArrayList<Integer>();
+    }
+
+    this.namespaceArray.add(namespaceArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNamespaceArrayItem(Integer namespaceArrayItem) {
+    if (namespaceArrayItem != null && this.namespaceArray != null) {
+      this.namespaceArray.remove(namespaceArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem namespaceWrappedArray(List<Integer> namespaceWrappedArray) {
@@ -534,6 +630,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.namespaceWrappedArray = namespaceWrappedArray;
   }
 
+  public XmlItem addNamespaceWrappedArrayItem(Integer namespaceWrappedArrayItem) {
+    if (this.namespaceWrappedArray == null) {
+      this.namespaceWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.namespaceWrappedArray.add(namespaceWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNamespaceWrappedArrayItem(Integer namespaceWrappedArrayItem) {
+    if (namespaceWrappedArrayItem != null && this.namespaceWrappedArray != null) {
+      this.namespaceWrappedArray.remove(namespaceWrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixNsString(String prefixNsString) {
@@ -639,6 +751,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixNsArray = prefixNsArray;
   }
 
+  public XmlItem addPrefixNsArrayItem(Integer prefixNsArrayItem) {
+    if (this.prefixNsArray == null) {
+      this.prefixNsArray = new ArrayList<Integer>();
+    }
+
+    this.prefixNsArray.add(prefixNsArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixNsArrayItem(Integer prefixNsArrayItem) {
+    if (prefixNsArrayItem != null && this.prefixNsArray != null) {
+      this.prefixNsArray.remove(prefixNsArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
@@ -660,6 +788,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
+  public XmlItem addPrefixNsWrappedArrayItem(Integer prefixNsWrappedArrayItem) {
+    if (this.prefixNsWrappedArray == null) {
+      this.prefixNsWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.prefixNsWrappedArray.add(prefixNsWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixNsWrappedArrayItem(Integer prefixNsWrappedArrayItem) {
+    if (prefixNsWrappedArrayItem != null && this.prefixNsWrappedArray != null) {
+      this.prefixNsWrappedArray.remove(prefixNsWrappedArrayItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/.openapi-generator/FILES b/samples/server/petstore/jaxrs-spec/.openapi-generator/FILES
index 6fcf44bfd13..9ad6a195e8f 100644
--- a/samples/server/petstore/jaxrs-spec/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs-spec/.openapi-generator/FILES
@@ -39,6 +39,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/api/PetApi.java
index 6ecab90d461..3e02dda7d20 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/api/PetApi.java
@@ -142,7 +142,7 @@ import javax.validation.Valid;
     @ApiResponses(value = { 
         @ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class)
     })
-    public Response uploadFile(@PathParam("petId") @ApiParam("ID of pet to update") Long petId,@FormParam(value = "additionalMetadata")  String additionalMetadata, @FormParam(value = "file") InputStream fileInputStream) {
+    public Response uploadFile(@PathParam("petId") @ApiParam("ID of pet to update") Long petId,@FormParam(value = "additionalMetadata")  String additionalMetadata, @FormParam(value = "file") InputStream _fileInputStream) {
         return Response.ok().entity("magic!").build();
     }
 }
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
index 61bec1b6ff4..4ebb303b837 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -55,6 +55,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapString = mapString;
   }
 
+  public AdditionalPropertiesClass putMapStringItem(String key, String mapStringItem) {
+    if (this.mapString == null) {
+      this.mapString = new HashMap<String, String>();
+    }
+
+    this.mapString.put(key, mapStringItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapStringItem(String mapStringItem) {
+    if (mapStringItem != null && this.mapString != null) {
+      this.mapString.remove(mapStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapNumber(Map<String, BigDecimal> mapNumber) {
@@ -76,6 +92,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapNumber = mapNumber;
   }
 
+  public AdditionalPropertiesClass putMapNumberItem(String key, BigDecimal mapNumberItem) {
+    if (this.mapNumber == null) {
+      this.mapNumber = new HashMap<String, BigDecimal>();
+    }
+
+    this.mapNumber.put(key, mapNumberItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapNumberItem(BigDecimal mapNumberItem) {
+    if (mapNumberItem != null && this.mapNumber != null) {
+      this.mapNumber.remove(mapNumberItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapInteger(Map<String, Integer> mapInteger) {
@@ -97,6 +129,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapInteger = mapInteger;
   }
 
+  public AdditionalPropertiesClass putMapIntegerItem(String key, Integer mapIntegerItem) {
+    if (this.mapInteger == null) {
+      this.mapInteger = new HashMap<String, Integer>();
+    }
+
+    this.mapInteger.put(key, mapIntegerItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapIntegerItem(Integer mapIntegerItem) {
+    if (mapIntegerItem != null && this.mapInteger != null) {
+      this.mapInteger.remove(mapIntegerItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapBoolean(Map<String, Boolean> mapBoolean) {
@@ -118,6 +166,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapBoolean = mapBoolean;
   }
 
+  public AdditionalPropertiesClass putMapBooleanItem(String key, Boolean mapBooleanItem) {
+    if (this.mapBoolean == null) {
+      this.mapBoolean = new HashMap<String, Boolean>();
+    }
+
+    this.mapBoolean.put(key, mapBooleanItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapBooleanItem(Boolean mapBooleanItem) {
+    if (mapBooleanItem != null && this.mapBoolean != null) {
+      this.mapBoolean.remove(mapBooleanItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapArrayInteger(Map<String, List<Integer>> mapArrayInteger) {
@@ -139,6 +203,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapArrayInteger = mapArrayInteger;
   }
 
+  public AdditionalPropertiesClass putMapArrayIntegerItem(String key, List<Integer> mapArrayIntegerItem) {
+    if (this.mapArrayInteger == null) {
+      this.mapArrayInteger = new HashMap<String, List<Integer>>();
+    }
+
+    this.mapArrayInteger.put(key, mapArrayIntegerItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapArrayIntegerItem(List<Integer> mapArrayIntegerItem) {
+    if (mapArrayIntegerItem != null && this.mapArrayInteger != null) {
+      this.mapArrayInteger.remove(mapArrayIntegerItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapArrayAnytype(Map<String, List<Object>> mapArrayAnytype) {
@@ -160,6 +240,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapArrayAnytype = mapArrayAnytype;
   }
 
+  public AdditionalPropertiesClass putMapArrayAnytypeItem(String key, List<Object> mapArrayAnytypeItem) {
+    if (this.mapArrayAnytype == null) {
+      this.mapArrayAnytype = new HashMap<String, List<Object>>();
+    }
+
+    this.mapArrayAnytype.put(key, mapArrayAnytypeItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapArrayAnytypeItem(List<Object> mapArrayAnytypeItem) {
+    if (mapArrayAnytypeItem != null && this.mapArrayAnytype != null) {
+      this.mapArrayAnytype.remove(mapArrayAnytypeItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapMapString(Map<String, Map<String, String>> mapMapString) {
@@ -181,6 +277,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapMapString = mapMapString;
   }
 
+  public AdditionalPropertiesClass putMapMapStringItem(String key, Map<String, String> mapMapStringItem) {
+    if (this.mapMapString == null) {
+      this.mapMapString = new HashMap<String, Map<String, String>>();
+    }
+
+    this.mapMapString.put(key, mapMapStringItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapMapStringItem(Map<String, String> mapMapStringItem) {
+    if (mapMapStringItem != null && this.mapMapString != null) {
+      this.mapMapString.remove(mapMapStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass mapMapAnytype(Map<String, Map<String, Object>> mapMapAnytype) {
@@ -202,6 +314,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.mapMapAnytype = mapMapAnytype;
   }
 
+  public AdditionalPropertiesClass putMapMapAnytypeItem(String key, Map<String, Object> mapMapAnytypeItem) {
+    if (this.mapMapAnytype == null) {
+      this.mapMapAnytype = new HashMap<String, Map<String, Object>>();
+    }
+
+    this.mapMapAnytype.put(key, mapMapAnytypeItem);
+    return this;
+  }
+
+  public AdditionalPropertiesClass removeMapMapAnytypeItem(Map<String, Object> mapMapAnytypeItem) {
+    if (mapMapAnytypeItem != null && this.mapMapAnytype != null) {
+      this.mapMapAnytype.remove(mapMapAnytypeItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public AdditionalPropertiesClass anytype1(Object anytype1) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index cbca7de2f69..e4dc1fd6837 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -44,6 +44,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
+  public ArrayOfArrayOfNumberOnly addArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (this.arrayArrayNumber == null) {
+      this.arrayArrayNumber = new ArrayList<List<BigDecimal>>();
+    }
+
+    this.arrayArrayNumber.add(arrayArrayNumberItem);
+    return this;
+  }
+
+  public ArrayOfArrayOfNumberOnly removeArrayArrayNumberItem(List<BigDecimal> arrayArrayNumberItem) {
+    if (arrayArrayNumberItem != null && this.arrayArrayNumber != null) {
+      this.arrayArrayNumber.remove(arrayArrayNumberItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
index ad7cc3db32e..19e29e9703b 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -44,6 +44,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayNumber = arrayNumber;
   }
 
+  public ArrayOfNumberOnly addArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (this.arrayNumber == null) {
+      this.arrayNumber = new ArrayList<BigDecimal>();
+    }
+
+    this.arrayNumber.add(arrayNumberItem);
+    return this;
+  }
+
+  public ArrayOfNumberOnly removeArrayNumberItem(BigDecimal arrayNumberItem) {
+    if (arrayNumberItem != null && this.arrayNumber != null) {
+      this.arrayNumber.remove(arrayNumberItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayTest.java
index f2b7469f65c..bda8bb29dc8 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ArrayTest.java
@@ -46,6 +46,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayOfString = arrayOfString;
   }
 
+  public ArrayTest addArrayOfStringItem(String arrayOfStringItem) {
+    if (this.arrayOfString == null) {
+      this.arrayOfString = new ArrayList<String>();
+    }
+
+    this.arrayOfString.add(arrayOfStringItem);
+    return this;
+  }
+
+  public ArrayTest removeArrayOfStringItem(String arrayOfStringItem) {
+    if (arrayOfStringItem != null && this.arrayOfString != null) {
+      this.arrayOfString.remove(arrayOfStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public ArrayTest arrayArrayOfInteger(List<List<Long>> arrayArrayOfInteger) {
@@ -67,6 +83,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayArrayOfInteger = arrayArrayOfInteger;
   }
 
+  public ArrayTest addArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (this.arrayArrayOfInteger == null) {
+      this.arrayArrayOfInteger = new ArrayList<List<Long>>();
+    }
+
+    this.arrayArrayOfInteger.add(arrayArrayOfIntegerItem);
+    return this;
+  }
+
+  public ArrayTest removeArrayArrayOfIntegerItem(List<Long> arrayArrayOfIntegerItem) {
+    if (arrayArrayOfIntegerItem != null && this.arrayArrayOfInteger != null) {
+      this.arrayArrayOfInteger.remove(arrayArrayOfIntegerItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public ArrayTest arrayArrayOfModel(List<List<ReadOnlyFirst>> arrayArrayOfModel) {
@@ -88,6 +120,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
+  public ArrayTest addArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (this.arrayArrayOfModel == null) {
+      this.arrayArrayOfModel = new ArrayList<List<ReadOnlyFirst>>();
+    }
+
+    this.arrayArrayOfModel.add(arrayArrayOfModelItem);
+    return this;
+  }
+
+  public ArrayTest removeArrayArrayOfModelItem(List<ReadOnlyFirst> arrayArrayOfModelItem) {
+    if (arrayArrayOfModelItem != null && this.arrayArrayOfModel != null) {
+      this.arrayArrayOfModel.remove(arrayArrayOfModelItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/EnumArrays.java
index bf05c76fd9e..f9f302e48cc 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/EnumArrays.java
@@ -131,6 +131,22 @@ public enum ArrayEnumEnum {
     this.arrayEnum = arrayEnum;
   }
 
+  public EnumArrays addArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (this.arrayEnum == null) {
+      this.arrayEnum = new ArrayList<ArrayEnumEnum>();
+    }
+
+    this.arrayEnum.add(arrayEnumItem);
+    return this;
+  }
+
+  public EnumArrays removeArrayEnumItem(ArrayEnumEnum arrayEnumItem) {
+    if (arrayEnumItem != null && this.arrayEnum != null) {
+      this.arrayEnum.remove(arrayEnumItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index 3896abfe4ec..6828ddc9bd4 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -4,6 +4,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import java.io.Serializable;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -20,13 +21,13 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
 @JsonTypeName("FileSchemaTestClass")
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class FileSchemaTestClass  implements Serializable {
   
-  private @Valid java.io.File file;
-  private @Valid List<java.io.File> files = new ArrayList<java.io.File>();
+  private @Valid ModelFile _file;
+  private @Valid List<ModelFile> files = new ArrayList<ModelFile>();
 
   /**
    **/
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
@@ -35,18 +36,18 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   
   @ApiModelProperty(value = "")
   @JsonProperty("file")
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
   @JsonProperty("file")
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
 /**
    **/
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
@@ -56,15 +57,31 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
   
   @ApiModelProperty(value = "")
   @JsonProperty("files")
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
   @JsonProperty("files")
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
+    if (this.files == null) {
+      this.files = new ArrayList<ModelFile>();
+    }
+
+    this.files.add(filesItem);
+    return this;
+  }
+
+  public FileSchemaTestClass removeFilesItem(ModelFile filesItem) {
+    if (filesItem != null && this.files != null) {
+      this.files.remove(filesItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
@@ -75,13 +92,13 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
   @Override
@@ -89,7 +106,7 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MapTest.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MapTest.java
index f5c57914a90..fe54c2dbaf1 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MapTest.java
@@ -80,6 +80,22 @@ public enum InnerEnum {
     this.mapMapOfString = mapMapOfString;
   }
 
+  public MapTest putMapMapOfStringItem(String key, Map<String, String> mapMapOfStringItem) {
+    if (this.mapMapOfString == null) {
+      this.mapMapOfString = new HashMap<String, Map<String, String>>();
+    }
+
+    this.mapMapOfString.put(key, mapMapOfStringItem);
+    return this;
+  }
+
+  public MapTest removeMapMapOfStringItem(Map<String, String> mapMapOfStringItem) {
+    if (mapMapOfStringItem != null && this.mapMapOfString != null) {
+      this.mapMapOfString.remove(mapMapOfStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public MapTest mapOfEnumString(Map<String, InnerEnum> mapOfEnumString) {
@@ -101,6 +117,22 @@ public enum InnerEnum {
     this.mapOfEnumString = mapOfEnumString;
   }
 
+  public MapTest putMapOfEnumStringItem(String key, InnerEnum mapOfEnumStringItem) {
+    if (this.mapOfEnumString == null) {
+      this.mapOfEnumString = new HashMap<String, InnerEnum>();
+    }
+
+    this.mapOfEnumString.put(key, mapOfEnumStringItem);
+    return this;
+  }
+
+  public MapTest removeMapOfEnumStringItem(InnerEnum mapOfEnumStringItem) {
+    if (mapOfEnumStringItem != null && this.mapOfEnumString != null) {
+      this.mapOfEnumString.remove(mapOfEnumStringItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public MapTest directMap(Map<String, Boolean> directMap) {
@@ -122,6 +154,22 @@ public enum InnerEnum {
     this.directMap = directMap;
   }
 
+  public MapTest putDirectMapItem(String key, Boolean directMapItem) {
+    if (this.directMap == null) {
+      this.directMap = new HashMap<String, Boolean>();
+    }
+
+    this.directMap.put(key, directMapItem);
+    return this;
+  }
+
+  public MapTest removeDirectMapItem(Boolean directMapItem) {
+    if (directMapItem != null && this.directMap != null) {
+      this.directMap.remove(directMapItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public MapTest indirectMap(Map<String, Boolean> indirectMap) {
@@ -143,6 +191,22 @@ public enum InnerEnum {
     this.indirectMap = indirectMap;
   }
 
+  public MapTest putIndirectMapItem(String key, Boolean indirectMapItem) {
+    if (this.indirectMap == null) {
+      this.indirectMap = new HashMap<String, Boolean>();
+    }
+
+    this.indirectMap.put(key, indirectMapItem);
+    return this;
+  }
+
+  public MapTest removeIndirectMapItem(Boolean indirectMapItem) {
+    if (indirectMapItem != null && this.indirectMap != null) {
+      this.indirectMap.remove(indirectMapItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 77464620e9c..54bbb7ca2f0 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -91,6 +91,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.map = map;
   }
 
+  public MixedPropertiesAndAdditionalPropertiesClass putMapItem(String key, Animal mapItem) {
+    if (this.map == null) {
+      this.map = new HashMap<String, Animal>();
+    }
+
+    this.map.put(key, mapItem);
+    return this;
+  }
+
+  public MixedPropertiesAndAdditionalPropertiesClass removeMapItem(Animal mapItem) {
+    if (mapItem != null && this.map != null) {
+      this.map.remove(mapItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..8ce42cac839
--- /dev/null
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,88 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.*;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ **/
+@ApiModel(description = "Must be named `File` for test.")
+@JsonTypeName("File")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelFile  implements Serializable {
+  
+  private @Valid String sourceURI;
+
+  /**
+   * Test capitalization
+   **/
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  
+
+  
+  @ApiModelProperty(value = "Test capitalization")
+  @JsonProperty("sourceURI")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  @JsonProperty("sourceURI")
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+}
+
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..f09d013e2dc
--- /dev/null
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.Serializable;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+import io.swagger.annotations.*;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonValue;
+import com.fasterxml.jackson.annotation.JsonTypeName;
+
+
+
+@JsonTypeName("List")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJAXRSSpecServerCodegen")public class ModelList  implements Serializable {
+  
+  private @Valid String _123list;
+
+  /**
+   **/
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  
+
+  
+  @ApiModelProperty(value = "")
+  @JsonProperty("123-list")
+  public String get123list() {
+    return _123list;
+  }
+
+  @JsonProperty("123-list")
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+
+
+}
+
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/Pet.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/Pet.java
index 7162d94b3b8..b35574db4cd 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/Pet.java
@@ -152,6 +152,22 @@ public enum StatusEnum {
     this.photoUrls = photoUrls;
   }
 
+  public Pet addPhotoUrlsItem(String photoUrlsItem) {
+    if (this.photoUrls == null) {
+      this.photoUrls = new LinkedHashSet<String>();
+    }
+
+    this.photoUrls.add(photoUrlsItem);
+    return this;
+  }
+
+  public Pet removePhotoUrlsItem(String photoUrlsItem) {
+    if (photoUrlsItem != null && this.photoUrls != null) {
+      this.photoUrls.remove(photoUrlsItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public Pet tags(List<Tag> tags) {
@@ -173,6 +189,22 @@ public enum StatusEnum {
     this.tags = tags;
   }
 
+  public Pet addTagsItem(Tag tagsItem) {
+    if (this.tags == null) {
+      this.tags = new ArrayList<Tag>();
+    }
+
+    this.tags.add(tagsItem);
+    return this;
+  }
+
+  public Pet removeTagsItem(Tag tagsItem) {
+    if (tagsItem != null && this.tags != null) {
+      this.tags.remove(tagsItem);
+    }
+
+    return this;
+  }
 /**
    * pet status in the store
    **/
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderDefault.java
index a093d79a6d6..1d7658a94fa 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderDefault.java
@@ -137,6 +137,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayItem = arrayItem;
   }
 
+  public TypeHolderDefault addArrayItemItem(Integer arrayItemItem) {
+    if (this.arrayItem == null) {
+      this.arrayItem = new ArrayList<Integer>();
+    }
+
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+  public TypeHolderDefault removeArrayItemItem(Integer arrayItemItem) {
+    if (arrayItemItem != null && this.arrayItem != null) {
+      this.arrayItem.remove(arrayItemItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderExample.java
index daaffc8af45..cdb7058acec 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/TypeHolderExample.java
@@ -160,6 +160,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.arrayItem = arrayItem;
   }
 
+  public TypeHolderExample addArrayItemItem(Integer arrayItemItem) {
+    if (this.arrayItem == null) {
+      this.arrayItem = new ArrayList<Integer>();
+    }
+
+    this.arrayItem.add(arrayItemItem);
+    return this;
+  }
+
+  public TypeHolderExample removeArrayItemItem(Integer arrayItemItem) {
+    if (arrayItemItem != null && this.arrayItem != null) {
+      this.arrayItem.remove(arrayItemItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/XmlItem.java
index 241ebb4e1bc..8e593b39392 100644
--- a/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/jaxrs-spec/src/gen/java/org/openapitools/model/XmlItem.java
@@ -156,6 +156,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.wrappedArray = wrappedArray;
   }
 
+  public XmlItem addWrappedArrayItem(Integer wrappedArrayItem) {
+    if (this.wrappedArray == null) {
+      this.wrappedArray = new ArrayList<Integer>();
+    }
+
+    this.wrappedArray.add(wrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removeWrappedArrayItem(Integer wrappedArrayItem) {
+    if (wrappedArrayItem != null && this.wrappedArray != null) {
+      this.wrappedArray.remove(wrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem nameString(String nameString) {
@@ -261,6 +277,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.nameArray = nameArray;
   }
 
+  public XmlItem addNameArrayItem(Integer nameArrayItem) {
+    if (this.nameArray == null) {
+      this.nameArray = new ArrayList<Integer>();
+    }
+
+    this.nameArray.add(nameArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNameArrayItem(Integer nameArrayItem) {
+    if (nameArrayItem != null && this.nameArray != null) {
+      this.nameArray.remove(nameArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem nameWrappedArray(List<Integer> nameWrappedArray) {
@@ -282,6 +314,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.nameWrappedArray = nameWrappedArray;
   }
 
+  public XmlItem addNameWrappedArrayItem(Integer nameWrappedArrayItem) {
+    if (this.nameWrappedArray == null) {
+      this.nameWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.nameWrappedArray.add(nameWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNameWrappedArrayItem(Integer nameWrappedArrayItem) {
+    if (nameWrappedArrayItem != null && this.nameWrappedArray != null) {
+      this.nameWrappedArray.remove(nameWrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixString(String prefixString) {
@@ -387,6 +435,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixArray = prefixArray;
   }
 
+  public XmlItem addPrefixArrayItem(Integer prefixArrayItem) {
+    if (this.prefixArray == null) {
+      this.prefixArray = new ArrayList<Integer>();
+    }
+
+    this.prefixArray.add(prefixArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixArrayItem(Integer prefixArrayItem) {
+    if (prefixArrayItem != null && this.prefixArray != null) {
+      this.prefixArray.remove(prefixArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixWrappedArray(List<Integer> prefixWrappedArray) {
@@ -408,6 +472,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixWrappedArray = prefixWrappedArray;
   }
 
+  public XmlItem addPrefixWrappedArrayItem(Integer prefixWrappedArrayItem) {
+    if (this.prefixWrappedArray == null) {
+      this.prefixWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.prefixWrappedArray.add(prefixWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixWrappedArrayItem(Integer prefixWrappedArrayItem) {
+    if (prefixWrappedArrayItem != null && this.prefixWrappedArray != null) {
+      this.prefixWrappedArray.remove(prefixWrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem namespaceString(String namespaceString) {
@@ -513,6 +593,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.namespaceArray = namespaceArray;
   }
 
+  public XmlItem addNamespaceArrayItem(Integer namespaceArrayItem) {
+    if (this.namespaceArray == null) {
+      this.namespaceArray = new ArrayList<Integer>();
+    }
+
+    this.namespaceArray.add(namespaceArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNamespaceArrayItem(Integer namespaceArrayItem) {
+    if (namespaceArrayItem != null && this.namespaceArray != null) {
+      this.namespaceArray.remove(namespaceArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem namespaceWrappedArray(List<Integer> namespaceWrappedArray) {
@@ -534,6 +630,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.namespaceWrappedArray = namespaceWrappedArray;
   }
 
+  public XmlItem addNamespaceWrappedArrayItem(Integer namespaceWrappedArrayItem) {
+    if (this.namespaceWrappedArray == null) {
+      this.namespaceWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.namespaceWrappedArray.add(namespaceWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removeNamespaceWrappedArrayItem(Integer namespaceWrappedArrayItem) {
+    if (namespaceWrappedArrayItem != null && this.namespaceWrappedArray != null) {
+      this.namespaceWrappedArray.remove(namespaceWrappedArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixNsString(String prefixNsString) {
@@ -639,6 +751,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixNsArray = prefixNsArray;
   }
 
+  public XmlItem addPrefixNsArrayItem(Integer prefixNsArrayItem) {
+    if (this.prefixNsArray == null) {
+      this.prefixNsArray = new ArrayList<Integer>();
+    }
+
+    this.prefixNsArray.add(prefixNsArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixNsArrayItem(Integer prefixNsArrayItem) {
+    if (prefixNsArrayItem != null && this.prefixNsArray != null) {
+      this.prefixNsArray.remove(prefixNsArrayItem);
+    }
+
+    return this;
+  }
 /**
    **/
   public XmlItem prefixNsWrappedArray(List<Integer> prefixNsWrappedArray) {
@@ -660,6 +788,22 @@ import com.fasterxml.jackson.annotation.JsonTypeName;
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
+  public XmlItem addPrefixNsWrappedArrayItem(Integer prefixNsWrappedArrayItem) {
+    if (this.prefixNsWrappedArray == null) {
+      this.prefixNsWrappedArray = new ArrayList<Integer>();
+    }
+
+    this.prefixNsWrappedArray.add(prefixNsWrappedArrayItem);
+    return this;
+  }
+
+  public XmlItem removePrefixNsWrappedArrayItem(Integer prefixNsWrappedArrayItem) {
+    if (prefixNsWrappedArrayItem != null && this.prefixNsWrappedArray != null) {
+      this.prefixNsWrappedArray.remove(prefixNsWrappedArrayItem);
+    }
+
+    return this;
+  }
 
   @Override
   public boolean equals(Object o) {
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/.openapi-generator/FILES b/samples/server/petstore/jaxrs/jersey1-useTags/.openapi-generator/FILES
index bacc5f1e611..450c68839f7 100644
--- a/samples/server/petstore/jaxrs/jersey1-useTags/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/.openapi-generator/FILES
@@ -51,6 +51,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/pom.xml b/samples/server/petstore/jaxrs/jersey1-useTags/pom.xml
index 232ac76fcc3..55cc66ba711 100644
--- a/samples/server/petstore/jaxrs/jersey1-useTags/pom.xml
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/pom.xml
@@ -204,7 +204,7 @@
     <jersey-version>1.19.1</jersey-version>
     <jackson-version>2.9.9</jackson-version>
     <slf4j-version>1.7.21</slf4j-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <servlet-api-version>4.0.4</servlet-api-version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApi.java
index ebd2ee60a41..60d36e038b1 100644
--- a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApi.java
@@ -186,10 +186,10 @@ public class PetApi  {
     public Response uploadFile(
         @ApiParam(value = "ID of pet to update", required = true) @PathParam("petId") @NotNull  Long petId,
         @FormDataParam("additionalMetadata")  String additionalMetadata,
-        @FormDataParam("file") FormDataBodyPart fileBodypart,
+        @FormDataParam("file") FormDataBodyPart _fileBodypart,
         @Context SecurityContext securityContext)
     throws NotFoundException {
-        return delegate.uploadFile(petId,additionalMetadata,fileBodypart,securityContext);
+        return delegate.uploadFile(petId,additionalMetadata,_fileBodypart,securityContext);
     }
     @POST
     @Path("/fake/{petId}/uploadImageWithRequiredFile")
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApiService.java
index 7d30265df3c..6d06af2737f 100644
--- a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/api/PetApiService.java
@@ -37,7 +37,7 @@ public abstract class PetApiService {
       throws NotFoundException;
       public abstract Response updatePetWithForm(Long petId,String name,String status,SecurityContext securityContext)
       throws NotFoundException;
-      public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart fileBodypart,SecurityContext securityContext)
+      public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart _fileBodypart,SecurityContext securityContext)
       throws NotFoundException;
       public abstract Response uploadFileWithRequiredFile(Long petId,FormDataBodyPart requiredFileBodypart,String additionalMetadata,SecurityContext securityContext)
       throws NotFoundException;
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index fb40a511e44..3b94a5f7e59 100644
--- a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -20,6 +20,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -35,40 +36,40 @@ import javax.validation.Valid;
 public class FileSchemaTestClass   {
   public static final String JSON_PROPERTY_FILE = "file";
   @JsonProperty(JSON_PROPERTY_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   @JsonProperty(JSON_PROPERTY_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
   /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
    **/
   @JsonProperty(value = "file")
   @ApiModelProperty(value = "")
   @Valid 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -81,11 +82,11 @@ public class FileSchemaTestClass   {
   @JsonProperty(value = "files")
   @ApiModelProperty(value = "")
   @Valid 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -99,13 +100,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
 
@@ -114,7 +115,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..dfb1fbe25c8
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,98 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelFile   {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(value = "sourceURI")
+  @ApiModelProperty(value = "Test capitalization")
+  
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..b6f07ac1c50
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,97 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ModelList
+ */
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelList   {
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(value = "123-list")
+  @ApiModelProperty(value = "")
+  
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey1-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs/jersey1-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index 1a08268b822..e6516d703df 100644
--- a/samples/server/petstore/jaxrs/jersey1-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs/jersey1-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -66,7 +66,7 @@ public class PetApiServiceImpl extends PetApiService {
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
     @Override
-    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart fileBodypart, SecurityContext securityContext)
+    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart _fileBodypart, SecurityContext securityContext)
     throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
diff --git a/samples/server/petstore/jaxrs/jersey1/.openapi-generator/FILES b/samples/server/petstore/jaxrs/jersey1/.openapi-generator/FILES
index 3d66ff3429e..f441c1926f8 100644
--- a/samples/server/petstore/jaxrs/jersey1/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs/jersey1/.openapi-generator/FILES
@@ -51,6 +51,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs/jersey1/pom.xml b/samples/server/petstore/jaxrs/jersey1/pom.xml
index 9356dcfe7eb..3d86b2b2769 100644
--- a/samples/server/petstore/jaxrs/jersey1/pom.xml
+++ b/samples/server/petstore/jaxrs/jersey1/pom.xml
@@ -204,7 +204,7 @@
     <jersey-version>1.19.1</jersey-version>
     <jackson-version>2.9.9</jackson-version>
     <slf4j-version>1.7.21</slf4j-version>
-    <junit-version>4.13</junit-version>
+    <junit-version>4.13.1</junit-version>
     <servlet-api-version>4.0.4</servlet-api-version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
diff --git a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApi.java
index 0a3f81393c4..68c5e32f95a 100644
--- a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApi.java
@@ -186,9 +186,9 @@ public class PetApi  {
     public Response uploadFile(
         @ApiParam(value = "ID of pet to update", required = true) @PathParam("petId") @NotNull  Long petId,
         @FormDataParam("additionalMetadata")  String additionalMetadata,
-        @FormDataParam("file") FormDataBodyPart fileBodypart,
+        @FormDataParam("file") FormDataBodyPart _fileBodypart,
         @Context SecurityContext securityContext)
     throws NotFoundException {
-        return delegate.uploadFile(petId,additionalMetadata,fileBodypart,securityContext);
+        return delegate.uploadFile(petId,additionalMetadata,_fileBodypart,securityContext);
     }
 }
diff --git a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApiService.java
index 2fdee428263..5218a45db1d 100644
--- a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/api/PetApiService.java
@@ -37,6 +37,6 @@ public abstract class PetApiService {
       throws NotFoundException;
       public abstract Response updatePetWithForm(Long petId,String name,String status,SecurityContext securityContext)
       throws NotFoundException;
-      public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart fileBodypart,SecurityContext securityContext)
+      public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart _fileBodypart,SecurityContext securityContext)
       throws NotFoundException;
 }
diff --git a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index fb40a511e44..3b94a5f7e59 100644
--- a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -20,6 +20,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -35,40 +36,40 @@ import javax.validation.Valid;
 public class FileSchemaTestClass   {
   public static final String JSON_PROPERTY_FILE = "file";
   @JsonProperty(JSON_PROPERTY_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   @JsonProperty(JSON_PROPERTY_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
   /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
    **/
   @JsonProperty(value = "file")
   @ApiModelProperty(value = "")
   @Valid 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -81,11 +82,11 @@ public class FileSchemaTestClass   {
   @JsonProperty(value = "files")
   @ApiModelProperty(value = "")
   @Valid 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -99,13 +100,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
 
@@ -114,7 +115,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..dfb1fbe25c8
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,98 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelFile   {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(value = "sourceURI")
+  @ApiModelProperty(value = "Test capitalization")
+  
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..b6f07ac1c50
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey1/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,97 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ModelList
+ */
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelList   {
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(value = "123-list")
+  @ApiModelProperty(value = "")
+  
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey1/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs/jersey1/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index b904ffb5508..831547ace61 100644
--- a/samples/server/petstore/jaxrs/jersey1/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs/jersey1/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -66,7 +66,7 @@ public class PetApiServiceImpl extends PetApiService {
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
     @Override
-    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart fileBodypart, SecurityContext securityContext)
+    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart _fileBodypart, SecurityContext securityContext)
     throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/.openapi-generator/FILES b/samples/server/petstore/jaxrs/jersey2-useTags/.openapi-generator/FILES
index bacc5f1e611..450c68839f7 100644
--- a/samples/server/petstore/jaxrs/jersey2-useTags/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/.openapi-generator/FILES
@@ -51,6 +51,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApi.java
index a06c5f332a0..42e4d96dc71 100644
--- a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApi.java
@@ -197,9 +197,9 @@ public class PetApi  {
         @io.swagger.annotations.ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class)
     })
     public Response uploadFile(@ApiParam(value = "ID of pet to update", required = true) @PathParam("petId") @NotNull  Long petId,@ApiParam(value = "Additional data to pass to server")@FormDataParam("additionalMetadata")  String additionalMetadata,
- @FormDataParam("file") FormDataBodyPart fileBodypart ,@Context SecurityContext securityContext)
+ @FormDataParam("file") FormDataBodyPart _fileBodypart ,@Context SecurityContext securityContext)
     throws NotFoundException {
-        return delegate.uploadFile(petId, additionalMetadata, fileBodypart, securityContext);
+        return delegate.uploadFile(petId, additionalMetadata, _fileBodypart, securityContext);
     }
     @POST
     @Path("/fake/{petId}/uploadImageWithRequiredFile")
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApiService.java
index 97cfb1e1042..e52293ebdd1 100644
--- a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/api/PetApiService.java
@@ -27,6 +27,6 @@ public abstract class PetApiService {
     public abstract Response getPetById(Long petId,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePet(Pet body,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePetWithForm(Long petId,String name,String status,SecurityContext securityContext) throws NotFoundException;
-    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart fileBodypart,SecurityContext securityContext) throws NotFoundException;
+    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart _fileBodypart,SecurityContext securityContext) throws NotFoundException;
     public abstract Response uploadFileWithRequiredFile(Long petId,FormDataBodyPart requiredFileBodypart,String additionalMetadata,SecurityContext securityContext) throws NotFoundException;
 }
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index fb40a511e44..3b94a5f7e59 100644
--- a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -20,6 +20,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -35,40 +36,40 @@ import javax.validation.Valid;
 public class FileSchemaTestClass   {
   public static final String JSON_PROPERTY_FILE = "file";
   @JsonProperty(JSON_PROPERTY_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   @JsonProperty(JSON_PROPERTY_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
   /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
    **/
   @JsonProperty(value = "file")
   @ApiModelProperty(value = "")
   @Valid 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -81,11 +82,11 @@ public class FileSchemaTestClass   {
   @JsonProperty(value = "files")
   @ApiModelProperty(value = "")
   @Valid 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -99,13 +100,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
 
@@ -114,7 +115,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..dfb1fbe25c8
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,98 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelFile   {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(value = "sourceURI")
+  @ApiModelProperty(value = "Test capitalization")
+  
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..b6f07ac1c50
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,97 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ModelList
+ */
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelList   {
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(value = "123-list")
+  @ApiModelProperty(value = "")
+  
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey2-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs/jersey2-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index 1f250a1a44c..c7bec398d95 100644
--- a/samples/server/petstore/jaxrs/jersey2-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs/jersey2-useTags/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -56,7 +56,7 @@ public class PetApiServiceImpl extends PetApiService {
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
     @Override
-    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart fileBodypart, SecurityContext securityContext) throws NotFoundException {
+    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart _fileBodypart, SecurityContext securityContext) throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
diff --git a/samples/server/petstore/jaxrs/jersey2/.openapi-generator/FILES b/samples/server/petstore/jaxrs/jersey2/.openapi-generator/FILES
index 3d66ff3429e..f441c1926f8 100644
--- a/samples/server/petstore/jaxrs/jersey2/.openapi-generator/FILES
+++ b/samples/server/petstore/jaxrs/jersey2/.openapi-generator/FILES
@@ -51,6 +51,8 @@ src/gen/java/org/openapitools/model/MapTest.java
 src/gen/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/gen/java/org/openapitools/model/Model200Response.java
 src/gen/java/org/openapitools/model/ModelApiResponse.java
+src/gen/java/org/openapitools/model/ModelFile.java
+src/gen/java/org/openapitools/model/ModelList.java
 src/gen/java/org/openapitools/model/ModelReturn.java
 src/gen/java/org/openapitools/model/Name.java
 src/gen/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApi.java b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApi.java
index f404694759d..85df879b338 100644
--- a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApi.java
@@ -197,8 +197,8 @@ public class PetApi  {
         @io.swagger.annotations.ApiResponse(code = 200, message = "successful operation", response = ModelApiResponse.class)
     })
     public Response uploadFile(@ApiParam(value = "ID of pet to update", required = true) @PathParam("petId") @NotNull  Long petId,@ApiParam(value = "Additional data to pass to server")@FormDataParam("additionalMetadata")  String additionalMetadata,
- @FormDataParam("file") FormDataBodyPart fileBodypart ,@Context SecurityContext securityContext)
+ @FormDataParam("file") FormDataBodyPart _fileBodypart ,@Context SecurityContext securityContext)
     throws NotFoundException {
-        return delegate.uploadFile(petId, additionalMetadata, fileBodypart, securityContext);
+        return delegate.uploadFile(petId, additionalMetadata, _fileBodypart, securityContext);
     }
 }
diff --git a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApiService.java b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApiService.java
index 1bf9b537255..2d9abcfd046 100644
--- a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApiService.java
+++ b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/api/PetApiService.java
@@ -27,5 +27,5 @@ public abstract class PetApiService {
     public abstract Response getPetById(Long petId,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePet(Pet body,SecurityContext securityContext) throws NotFoundException;
     public abstract Response updatePetWithForm(Long petId,String name,String status,SecurityContext securityContext) throws NotFoundException;
-    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart fileBodypart,SecurityContext securityContext) throws NotFoundException;
+    public abstract Response uploadFile(Long petId,String additionalMetadata,FormDataBodyPart _fileBodypart,SecurityContext securityContext) throws NotFoundException;
 }
diff --git a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
index fb40a511e44..3b94a5f7e59 100644
--- a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/FileSchemaTestClass.java
@@ -20,6 +20,7 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
+import org.openapitools.model.ModelFile;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import javax.validation.constraints.*;
 import javax.validation.Valid;
@@ -35,40 +36,40 @@ import javax.validation.Valid;
 public class FileSchemaTestClass   {
   public static final String JSON_PROPERTY_FILE = "file";
   @JsonProperty(JSON_PROPERTY_FILE)
-  private java.io.File file;
+  private ModelFile _file;
 
   public static final String JSON_PROPERTY_FILES = "files";
   @JsonProperty(JSON_PROPERTY_FILES)
-  private List<java.io.File> files = null;
+  private List<ModelFile> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
-    this.file = file;
+  public FileSchemaTestClass _file(ModelFile _file) {
+    this._file = _file;
     return this;
   }
 
   /**
-   * Get file
-   * @return file
+   * Get _file
+   * @return _file
    **/
   @JsonProperty(value = "file")
   @ApiModelProperty(value = "")
   @Valid 
-  public java.io.File getFile() {
-    return file;
+  public ModelFile getFile() {
+    return _file;
   }
 
-  public void setFile(java.io.File file) {
-    this.file = file;
+  public void setFile(ModelFile _file) {
+    this._file = _file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<ModelFile> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(ModelFile filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<ModelFile>();
     }
     this.files.add(filesItem);
     return this;
@@ -81,11 +82,11 @@ public class FileSchemaTestClass   {
   @JsonProperty(value = "files")
   @ApiModelProperty(value = "")
   @Valid 
-  public List<java.io.File> getFiles() {
+  public List<ModelFile> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<ModelFile> files) {
     this.files = files;
   }
 
@@ -99,13 +100,13 @@ public class FileSchemaTestClass   {
       return false;
     }
     FileSchemaTestClass fileSchemaTestClass = (FileSchemaTestClass) o;
-    return Objects.equals(this.file, fileSchemaTestClass.file) &&
+    return Objects.equals(this._file, fileSchemaTestClass._file) &&
         Objects.equals(this.files, fileSchemaTestClass.files);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(file, files);
+    return Objects.hash(_file, files);
   }
 
 
@@ -114,7 +115,7 @@ public class FileSchemaTestClass   {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
     
-    sb.append("    file: ").append(toIndentedString(file)).append("\n");
+    sb.append("    _file: ").append(toIndentedString(_file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..dfb1fbe25c8
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,98 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@JsonPropertyOrder({
+  ModelFile.JSON_PROPERTY_SOURCE_U_R_I
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelFile   {
+  public static final String JSON_PROPERTY_SOURCE_U_R_I = "sourceURI";
+  @JsonProperty(JSON_PROPERTY_SOURCE_U_R_I)
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+   **/
+  @JsonProperty(value = "sourceURI")
+  @ApiModelProperty(value = "Test capitalization")
+  
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/ModelList.java b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..b6f07ac1c50
--- /dev/null
+++ b/samples/server/petstore/jaxrs/jersey2/src/gen/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,97 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.model;
+
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import com.fasterxml.jackson.annotation.JsonPropertyOrder;
+import javax.validation.constraints.*;
+import javax.validation.Valid;
+
+/**
+ * ModelList
+ */
+@JsonPropertyOrder({
+  ModelList.JSON_PROPERTY_123LIST
+})
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaJerseyServerCodegen")
+public class ModelList   {
+  public static final String JSON_PROPERTY_123LIST = "123-list";
+  @JsonProperty(JSON_PROPERTY_123LIST)
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+   **/
+  @JsonProperty(value = "123-list")
+  @ApiModelProperty(value = "")
+  
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/jaxrs/jersey2/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java b/samples/server/petstore/jaxrs/jersey2/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
index b075fabf211..5cbdde95355 100644
--- a/samples/server/petstore/jaxrs/jersey2/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
+++ b/samples/server/petstore/jaxrs/jersey2/src/main/java/org/openapitools/api/impl/PetApiServiceImpl.java
@@ -56,7 +56,7 @@ public class PetApiServiceImpl extends PetApiService {
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
     @Override
-    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart fileBodypart, SecurityContext securityContext) throws NotFoundException {
+    public Response uploadFile(Long petId, String additionalMetadata, FormDataBodyPart _fileBodypart, SecurityContext securityContext) throws NotFoundException {
         // do some magic!
         return Response.ok().entity(new ApiResponseMessage(ApiResponseMessage.OK, "magic!")).build();
     }
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator-ignore b/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator/FILES b/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator/FILES
new file mode 100644
index 00000000000..8311b1e0d0a
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator/FILES
@@ -0,0 +1,13 @@
+README.md
+build.gradle
+gradle.properties
+settings.gradle
+src/main/kotlin/org/openapitools/server/apis/PetApi.kt
+src/main/kotlin/org/openapitools/server/apis/StoreApi.kt
+src/main/kotlin/org/openapitools/server/apis/UserApi.kt
+src/main/kotlin/org/openapitools/server/models/Category.kt
+src/main/kotlin/org/openapitools/server/models/ModelApiResponse.kt
+src/main/kotlin/org/openapitools/server/models/Order.kt
+src/main/kotlin/org/openapitools/server/models/Pet.kt
+src/main/kotlin/org/openapitools/server/models/Tag.kt
+src/main/kotlin/org/openapitools/server/models/User.kt
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator/VERSION b/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator/VERSION
new file mode 100644
index 00000000000..5f68295fc19
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/.openapi-generator/VERSION
@@ -0,0 +1 @@
+6.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/README.md b/samples/server/petstore/kotlin-server/jaxrs-spec/README.md
new file mode 100644
index 00000000000..d5e7ab18e68
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/README.md
@@ -0,0 +1,89 @@
+# org.openapitools.server - Kotlin Server library for OpenAPI Petstore
+
+## Requires
+
+* Kotlin 1.4.31
+* Gradle 6.8.2
+
+## Build
+
+First, create the gradle wrapper script:
+
+```
+gradle wrapper
+```
+
+Then, run:
+
+```
+./gradlew check assemble
+```
+
+This runs all tests and packages the library.
+
+## Features/Implementation Notes
+
+* Supports JSON inputs/outputs, File inputs, and Form inputs.
+* Supports collection formats for query parameters: csv, tsv, ssv, pipes.
+* Some Kotlin and Java types are fully qualified to avoid conflicts with types defined in OpenAPI definitions.
+
+<a name="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*PetApi* | [**addPet**](docs/PetApi.md#addpet) | **POST** /pet | Add a new pet to the store
+*PetApi* | [**deletePet**](docs/PetApi.md#deletepet) | **DELETE** /pet/{petId} | Deletes a pet
+*PetApi* | [**findPetsByStatus**](docs/PetApi.md#findpetsbystatus) | **GET** /pet/findByStatus | Finds Pets by status
+*PetApi* | [**findPetsByTags**](docs/PetApi.md#findpetsbytags) | **GET** /pet/findByTags | Finds Pets by tags
+*PetApi* | [**getPetById**](docs/PetApi.md#getpetbyid) | **GET** /pet/{petId} | Find pet by ID
+*PetApi* | [**updatePet**](docs/PetApi.md#updatepet) | **PUT** /pet | Update an existing pet
+*PetApi* | [**updatePetWithForm**](docs/PetApi.md#updatepetwithform) | **POST** /pet/{petId} | Updates a pet in the store with form data
+*PetApi* | [**uploadFile**](docs/PetApi.md#uploadfile) | **POST** /pet/{petId}/uploadImage | uploads an image
+*StoreApi* | [**deleteOrder**](docs/StoreApi.md#deleteorder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID
+*StoreApi* | [**getInventory**](docs/StoreApi.md#getinventory) | **GET** /store/inventory | Returns pet inventories by status
+*StoreApi* | [**getOrderById**](docs/StoreApi.md#getorderbyid) | **GET** /store/order/{orderId} | Find purchase order by ID
+*StoreApi* | [**placeOrder**](docs/StoreApi.md#placeorder) | **POST** /store/order | Place an order for a pet
+*UserApi* | [**createUser**](docs/UserApi.md#createuser) | **POST** /user | Create user
+*UserApi* | [**createUsersWithArrayInput**](docs/UserApi.md#createuserswitharrayinput) | **POST** /user/createWithArray | Creates list of users with given input array
+*UserApi* | [**createUsersWithListInput**](docs/UserApi.md#createuserswithlistinput) | **POST** /user/createWithList | Creates list of users with given input array
+*UserApi* | [**deleteUser**](docs/UserApi.md#deleteuser) | **DELETE** /user/{username} | Delete user
+*UserApi* | [**getUserByName**](docs/UserApi.md#getuserbyname) | **GET** /user/{username} | Get user by user name
+*UserApi* | [**loginUser**](docs/UserApi.md#loginuser) | **GET** /user/login | Logs user into the system
+*UserApi* | [**logoutUser**](docs/UserApi.md#logoutuser) | **GET** /user/logout | Logs out current logged in user session
+*UserApi* | [**updateUser**](docs/UserApi.md#updateuser) | **PUT** /user/{username} | Updated user
+
+
+<a name="documentation-for-models"></a>
+## Documentation for Models
+
+ - [org.openapitools.server.models.Category](docs/Category.md)
+ - [org.openapitools.server.models.ModelApiResponse](docs/ModelApiResponse.md)
+ - [org.openapitools.server.models.Order](docs/Order.md)
+ - [org.openapitools.server.models.Pet](docs/Pet.md)
+ - [org.openapitools.server.models.Tag](docs/Tag.md)
+ - [org.openapitools.server.models.User](docs/User.md)
+
+
+<a name="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+<a name="api_key"></a>
+### api_key
+
+- **Type**: API key
+- **API key parameter name**: api_key
+- **Location**: HTTP header
+
+<a name="petstore_auth"></a>
+### petstore_auth
+
+- **Type**: OAuth
+- **Flow**: implicit
+- **Authorization URL**: http://petstore.swagger.io/api/oauth/dialog
+- **Scopes**: 
+  - write:pets: modify pets in your account
+  - read:pets: read your pets
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/build.gradle b/samples/server/petstore/kotlin-server/jaxrs-spec/build.gradle
new file mode 100644
index 00000000000..b85cf730367
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/build.gradle
@@ -0,0 +1,51 @@
+group "org.openapitools"
+version "1.0.0"
+
+wrapper {
+    gradleVersion = "6.9"
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = "1.4.32"
+    ext.jakarta_ws_rs_version = "2.1.6"
+    ext.swagger_annotations_version = "1.5.3"
+    ext.jakarta_annotations_version = "1.3.5"
+    ext.jackson_version = "2.9.9"
+    repositories {
+        maven { url "https://repo1.maven.org/maven2" }
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+    dependencies {
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+    }
+}
+
+apply plugin: "java"
+apply plugin: "kotlin"
+apply plugin: "application"
+
+sourceCompatibility = 1.8
+
+compileKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+compileTestKotlin {
+    kotlinOptions.jvmTarget = "1.8"
+}
+
+repositories {
+    maven { setUrl("https://repo1.maven.org/maven2") }
+}
+
+dependencies {
+    implementation("org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version")
+    implementation("ch.qos.logback:logback-classic:1.2.1")
+    implementation("jakarta.ws.rs:jakarta.ws.rs-api:$jakarta_ws_rs_version")
+    implementation("jakarta.annotation:jakarta.annotation-api:$jakarta_annotations_version")
+    implementation("io.swagger:swagger-annotations:$swagger_annotations_version")
+    implementation("com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:$jackson_version")
+    implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:$jackson_version")
+    testImplementation("junit:junit:4.13.2")
+}
\ No newline at end of file
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/gradle.properties b/samples/server/petstore/kotlin-server/jaxrs-spec/gradle.properties
new file mode 100644
index 00000000000..5f1ed7bbe02
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/gradle.properties
@@ -0,0 +1 @@
+org.gradle.caching=true
\ No newline at end of file
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/settings.gradle b/samples/server/petstore/kotlin-server/jaxrs-spec/settings.gradle
new file mode 100644
index 00000000000..a09a58efab1
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'kotlin-server'
\ No newline at end of file
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/PetApi.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/PetApi.kt
new file mode 100644
index 00000000000..eb94d6065e6
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/PetApi.kt
@@ -0,0 +1,66 @@
+package org.openapitools.server.apis;
+
+import org.openapitools.server.models.ModelApiResponse
+import org.openapitools.server.models.Pet
+
+import javax.ws.rs.*
+import javax.ws.rs.core.Response
+
+
+import java.io.InputStream
+import java.util.Map
+import java.util.List
+
+
+
+@Path("/")
+@javax.annotation.Generated(value = arrayOf("org.openapitools.codegen.languages.KotlinServerCodegen"))class PetApi {
+
+    @POST
+    @Consumes("application/json", "application/xml")
+    suspend fun addPet( body: Pet): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @DELETE
+    suspend fun deletePet(@PathParam("petId") petId: kotlin.Long,@HeaderParam("api_key")   apiKey: kotlin.String?): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/xml", "application/json")
+    suspend fun findPetsByStatus(@QueryParam("status")   status: kotlin.collections.List<kotlin.String>): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/xml", "application/json")
+    suspend fun findPetsByTags(@QueryParam("tags")   tags: kotlin.collections.List<kotlin.String>): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/xml", "application/json")
+    suspend fun getPetById(@PathParam("petId") petId: kotlin.Long): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @PUT
+    @Consumes("application/json", "application/xml")
+    suspend fun updatePet( body: Pet): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @POST
+    @Consumes("application/x-www-form-urlencoded")
+    suspend fun updatePetWithForm(@PathParam("petId") petId: kotlin.Long,@FormParam(value = "name") name: kotlin.String?,@FormParam(value = "status") status: kotlin.String?): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @POST
+    @Consumes("multipart/form-data")
+    @Produces("application/json")
+    suspend fun uploadFile(@PathParam("petId") petId: kotlin.Long,@FormParam(value = "additionalMetadata") additionalMetadata: kotlin.String?, @FormParam(value = "file") fileInputStream: InputStream?): Response {
+        return Response.ok().entity("magic!").build();
+    }
+}
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/StoreApi.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/StoreApi.kt
new file mode 100644
index 00000000000..f297a11661d
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/StoreApi.kt
@@ -0,0 +1,40 @@
+package org.openapitools.server.apis;
+
+import org.openapitools.server.models.Order
+
+import javax.ws.rs.*
+import javax.ws.rs.core.Response
+
+
+import java.io.InputStream
+import java.util.Map
+import java.util.List
+
+
+
+@Path("/")
+@javax.annotation.Generated(value = arrayOf("org.openapitools.codegen.languages.KotlinServerCodegen"))class StoreApi {
+
+    @DELETE
+    suspend fun deleteOrder(@PathParam("orderId") orderId: kotlin.String): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/json")
+    suspend fun getInventory(): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/xml", "application/json")
+    suspend fun getOrderById(@PathParam("orderId") orderId: kotlin.Long): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @POST
+    @Produces("application/xml", "application/json")
+    suspend fun placeOrder( body: Order): Response {
+        return Response.ok().entity("magic!").build();
+    }
+}
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/UserApi.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/UserApi.kt
new file mode 100644
index 00000000000..f824ebc217a
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/UserApi.kt
@@ -0,0 +1,59 @@
+package org.openapitools.server.apis;
+
+import org.openapitools.server.models.User
+
+import javax.ws.rs.*
+import javax.ws.rs.core.Response
+
+
+import java.io.InputStream
+import java.util.Map
+import java.util.List
+
+
+
+@Path("/")
+@javax.annotation.Generated(value = arrayOf("org.openapitools.codegen.languages.KotlinServerCodegen"))class UserApi {
+
+    @POST
+    suspend fun createUser( body: User): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @POST
+    suspend fun createUsersWithArrayInput( body: kotlin.collections.List<User>): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @POST
+    suspend fun createUsersWithListInput( body: kotlin.collections.List<User>): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @DELETE
+    suspend fun deleteUser(@PathParam("username") username: kotlin.String): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/xml", "application/json")
+    suspend fun getUserByName(@PathParam("username") username: kotlin.String): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    @Produces("application/xml", "application/json")
+    suspend fun loginUser(@QueryParam("username")   username: kotlin.String,@QueryParam("password")   password: kotlin.String): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @GET
+    suspend fun logoutUser(): Response {
+        return Response.ok().entity("magic!").build();
+    }
+
+    @PUT
+    suspend fun updateUser(@PathParam("username") username: kotlin.String, body: User): Response {
+        return Response.ok().entity("magic!").build();
+    }
+}
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/ApiResponse.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/ApiResponse.kt
new file mode 100644
index 00000000000..974c9589a7f
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/ApiResponse.kt
@@ -0,0 +1,33 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * Describes the result of uploading an image resource
+ *
+ * @param code 
+ * @param type 
+ * @param message 
+ */
+
+
+data class ApiResponse (
+
+    val code: kotlin.Int? = null,
+
+    val type: kotlin.String? = null,
+
+    val message: kotlin.String? = null
+
+)
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Category.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Category.kt
new file mode 100644
index 00000000000..9a39acd8aea
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Category.kt
@@ -0,0 +1,34 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * A category for a pet
+ *
+ * @param id 
+ * @param name 
+ */
+
+
+data class Category (
+
+
+    @JsonProperty("id")
+    val id: kotlin.Long? = null,
+
+
+    @JsonProperty("name")
+    val name: kotlin.String? = null
+
+)
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/ModelApiResponse.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/ModelApiResponse.kt
new file mode 100644
index 00000000000..531f364e2f7
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/ModelApiResponse.kt
@@ -0,0 +1,39 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * Describes the result of uploading an image resource
+ *
+ * @param code 
+ * @param type 
+ * @param message 
+ */
+
+
+data class ModelApiResponse (
+
+
+    @JsonProperty("code")
+    val code: kotlin.Int? = null,
+
+
+    @JsonProperty("type")
+    val type: kotlin.String? = null,
+
+
+    @JsonProperty("message")
+    val message: kotlin.String? = null
+
+)
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Order.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Order.kt
new file mode 100644
index 00000000000..d4a39a2c2bb
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Order.kt
@@ -0,0 +1,67 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * An order for a pets from the pet store
+ *
+ * @param id 
+ * @param petId 
+ * @param quantity 
+ * @param shipDate 
+ * @param status Order Status
+ * @param complete 
+ */
+
+
+data class Order (
+
+
+    @JsonProperty("id")
+    val id: kotlin.Long? = null,
+
+
+    @JsonProperty("petId")
+    val petId: kotlin.Long? = null,
+
+
+    @JsonProperty("quantity")
+    val quantity: kotlin.Int? = null,
+
+
+    @JsonProperty("shipDate")
+    val shipDate: java.time.OffsetDateTime? = null,
+
+    /* Order Status */
+
+    @JsonProperty("status")
+    val status: Order.Status? = null,
+
+
+    @JsonProperty("complete")
+    val complete: kotlin.Boolean? = false
+
+) {
+
+    /**
+     * Order Status
+     *
+     * Values: placed,approved,delivered
+     */
+    enum class Status(val value: kotlin.String) {
+        @JsonProperty(value = "placed") placed("placed"),
+        @JsonProperty(value = "approved") approved("approved"),
+        @JsonProperty(value = "delivered") delivered("delivered");
+    }
+}
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Pet.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Pet.kt
new file mode 100644
index 00000000000..826d87a7303
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Pet.kt
@@ -0,0 +1,69 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import org.openapitools.server.models.Category
+import org.openapitools.server.models.Tag
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * A pet for sale in the pet store
+ *
+ * @param name 
+ * @param photoUrls 
+ * @param id 
+ * @param category 
+ * @param tags 
+ * @param status pet status in the store
+ */
+
+
+data class Pet (
+
+
+    @JsonProperty("name")
+    val name: kotlin.String,
+
+
+    @JsonProperty("photoUrls")
+    val photoUrls: kotlin.collections.List<kotlin.String>,
+
+
+    @JsonProperty("id")
+    val id: kotlin.Long? = null,
+
+
+    @JsonProperty("category")
+    val category: Category? = null,
+
+
+    @JsonProperty("tags")
+    val tags: kotlin.collections.List<Tag>? = null,
+
+    /* pet status in the store */
+
+    @JsonProperty("status")
+    val status: Pet.Status? = null
+
+) {
+
+    /**
+     * pet status in the store
+     *
+     * Values: available,pending,sold
+     */
+    enum class Status(val value: kotlin.String) {
+        @JsonProperty(value = "available") available("available"),
+        @JsonProperty(value = "pending") pending("pending"),
+        @JsonProperty(value = "sold") sold("sold");
+    }
+}
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Tag.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Tag.kt
new file mode 100644
index 00000000000..ded0e6fab03
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/Tag.kt
@@ -0,0 +1,34 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * A tag for a pet
+ *
+ * @param id 
+ * @param name 
+ */
+
+
+data class Tag (
+
+
+    @JsonProperty("id")
+    val id: kotlin.Long? = null,
+
+
+    @JsonProperty("name")
+    val name: kotlin.String? = null
+
+)
+
diff --git a/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/User.kt b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/User.kt
new file mode 100644
index 00000000000..4d0dcec6691
--- /dev/null
+++ b/samples/server/petstore/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/models/User.kt
@@ -0,0 +1,65 @@
+/**
+ * OpenAPI Petstore
+ * This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+ *
+ * The version of the OpenAPI document: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+*/
+package org.openapitools.server.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+/**
+ * A User who is purchasing from the pet store
+ *
+ * @param id 
+ * @param username 
+ * @param firstName 
+ * @param lastName 
+ * @param email 
+ * @param password 
+ * @param phone 
+ * @param userStatus User Status
+ */
+
+
+data class User (
+
+
+    @JsonProperty("id")
+    val id: kotlin.Long? = null,
+
+
+    @JsonProperty("username")
+    val username: kotlin.String? = null,
+
+
+    @JsonProperty("firstName")
+    val firstName: kotlin.String? = null,
+
+
+    @JsonProperty("lastName")
+    val lastName: kotlin.String? = null,
+
+
+    @JsonProperty("email")
+    val email: kotlin.String? = null,
+
+
+    @JsonProperty("password")
+    val password: kotlin.String? = null,
+
+
+    @JsonProperty("phone")
+    val phone: kotlin.String? = null,
+
+    /* User Status */
+
+    @JsonProperty("userStatus")
+    val userStatus: kotlin.Int? = null
+
+)
+
diff --git a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Category.kt b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Category.kt
index 29aaa19c2c2..7768072a83d 100644
--- a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Category.kt
+++ b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Category.kt
@@ -24,8 +24,8 @@ import com.fasterxml.jackson.annotation.JsonInclude
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonIgnoreProperties(ignoreUnknown = true)
 data class Category (
-    var id: kotlin.Long? = null,
-    var name: kotlin.String? = null
+    val id: kotlin.Long? = null,
+    val name: kotlin.String? = null
 ) {
 
 }
diff --git a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/ModelApiResponse.kt b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/ModelApiResponse.kt
index ce832696033..332a3c0f6e7 100644
--- a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/ModelApiResponse.kt
+++ b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/ModelApiResponse.kt
@@ -25,9 +25,9 @@ import com.fasterxml.jackson.annotation.JsonInclude
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonIgnoreProperties(ignoreUnknown = true)
 data class ModelApiResponse (
-    var code: kotlin.Int? = null,
-    var type: kotlin.String? = null,
-    var message: kotlin.String? = null
+    val code: kotlin.Int? = null,
+    val type: kotlin.String? = null,
+    val message: kotlin.String? = null
 ) {
 
 }
diff --git a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Order.kt b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Order.kt
index a25f7e74bc7..9078e0bdd25 100644
--- a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Order.kt
+++ b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Order.kt
@@ -28,13 +28,13 @@ import com.fasterxml.jackson.annotation.JsonInclude
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonIgnoreProperties(ignoreUnknown = true)
 data class Order (
-    var id: kotlin.Long? = null,
-    var petId: kotlin.Long? = null,
-    var quantity: kotlin.Int? = null,
-    var shipDate: java.time.OffsetDateTime? = null,
+    val id: kotlin.Long? = null,
+    val petId: kotlin.Long? = null,
+    val quantity: kotlin.Int? = null,
+    val shipDate: java.time.OffsetDateTime? = null,
     /* Order Status */
-    var status: Order.Status? = null,
-    var complete: kotlin.Boolean? = false
+    val status: Order.Status? = null,
+    val complete: kotlin.Boolean? = false
 ) {
 
     /**
diff --git a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Pet.kt b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Pet.kt
index e80d49fc3f5..6061c8e0154 100644
--- a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Pet.kt
+++ b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Pet.kt
@@ -30,13 +30,13 @@ import com.fasterxml.jackson.annotation.JsonInclude
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonIgnoreProperties(ignoreUnknown = true)
 data class Pet (
-    @SerializedName("name") private var _name: kotlin.String?,
-    @SerializedName("photoUrls") private var _photoUrls: kotlin.Array<kotlin.String>?,
-    var id: kotlin.Long? = null,
-    var category: Category? = null,
-    var tags: kotlin.Array<Tag>? = null,
+    @SerializedName("name") private val _name: kotlin.String?,
+    @SerializedName("photoUrls") private val _photoUrls: kotlin.Array<kotlin.String>?,
+    val id: kotlin.Long? = null,
+    val category: Category? = null,
+    val tags: kotlin.Array<Tag>? = null,
     /* pet status in the store */
-    var status: Pet.Status? = null
+    val status: Pet.Status? = null
 ) {
 
     /**
@@ -53,9 +53,9 @@ data class Pet (
     
     }
 
-        var name get() = _name ?: throw IllegalArgumentException("name is required")
-                    set(value){ _name = value }
-        var photoUrls get() = _photoUrls ?: throw IllegalArgumentException("photoUrls is required")
-                    set(value){ _photoUrls = value }
+        val name get() = _name ?: throw IllegalArgumentException("name is required")
+                    
+        val photoUrls get() = _photoUrls ?: throw IllegalArgumentException("photoUrls is required")
+                    
 }
 
diff --git a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Tag.kt b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Tag.kt
index 359a53af609..b444b341a9e 100644
--- a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Tag.kt
+++ b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/Tag.kt
@@ -24,8 +24,8 @@ import com.fasterxml.jackson.annotation.JsonInclude
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonIgnoreProperties(ignoreUnknown = true)
 data class Tag (
-    var id: kotlin.Long? = null,
-    var name: kotlin.String? = null
+    val id: kotlin.Long? = null,
+    val name: kotlin.String? = null
 ) {
 
 }
diff --git a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/User.kt b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/User.kt
index 791d0b88233..e8b5bb5e705 100644
--- a/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/User.kt
+++ b/samples/server/petstore/kotlin/vertx/src/main/kotlin/org/openapitools/server/api/model/User.kt
@@ -30,15 +30,15 @@ import com.fasterxml.jackson.annotation.JsonInclude
 @JsonInclude(JsonInclude.Include.NON_NULL)
 @JsonIgnoreProperties(ignoreUnknown = true)
 data class User (
-    var id: kotlin.Long? = null,
-    var username: kotlin.String? = null,
-    var firstName: kotlin.String? = null,
-    var lastName: kotlin.String? = null,
-    var email: kotlin.String? = null,
-    var password: kotlin.String? = null,
-    var phone: kotlin.String? = null,
+    val id: kotlin.Long? = null,
+    val username: kotlin.String? = null,
+    val firstName: kotlin.String? = null,
+    val lastName: kotlin.String? = null,
+    val email: kotlin.String? = null,
+    val password: kotlin.String? = null,
+    val phone: kotlin.String? = null,
     /* User Status */
-    var userStatus: kotlin.Int? = null
+    val userStatus: kotlin.Int? = null
 ) {
 
 }
diff --git a/samples/server/petstore/nancyfx-async/.gitignore b/samples/server/petstore/nancyfx-async/.gitignore
deleted file mode 100644
index 1ee53850b84..00000000000
--- a/samples/server/petstore/nancyfx-async/.gitignore
+++ /dev/null
@@ -1,362 +0,0 @@
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-##
-## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
-
-# User-specific files
-*.rsuser
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
-*.userprefs
-
-# Mono auto generated files
-mono_crash.*
-
-# Build results
-[Dd]ebug/
-[Dd]ebugPublic/
-[Rr]elease/
-[Rr]eleases/
-x64/
-x86/
-[Ww][Ii][Nn]32/
-[Aa][Rr][Mm]/
-[Aa][Rr][Mm]64/
-bld/
-[Bb]in/
-[Oo]bj/
-[Ll]og/
-[Ll]ogs/
-
-# Visual Studio 2015/2017 cache/options directory
-.vs/
-# Uncomment if you have tasks that create the project's static files in wwwroot
-#wwwroot/
-
-# Visual Studio 2017 auto generated files
-Generated\ Files/
-
-# MSTest test Results
-[Tt]est[Rr]esult*/
-[Bb]uild[Ll]og.*
-
-# NUnit
-*.VisualState.xml
-TestResult.xml
-nunit-*.xml
-
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
-# Benchmark Results
-BenchmarkDotNet.Artifacts/
-
-# .NET Core
-project.lock.json
-project.fragment.lock.json
-artifacts/
-
-# ASP.NET Scaffolding
-ScaffoldingReadMe.txt
-
-# StyleCop
-StyleCopReport.xml
-
-# Files built by Visual Studio
-*_i.c
-*_p.c
-*_h.h
-*.ilk
-*.meta
-*.obj
-*.iobj
-*.pch
-*.pdb
-*.ipdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.tmp_proj
-*_wpftmp.csproj
-*.log
-*.vspscc
-*.vssscc
-.builds
-*.pidb
-*.svclog
-*.scc
-
-# Chutzpah Test files
-_Chutzpah*
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opendb
-*.opensdf
-*.sdf
-*.cachefile
-*.VC.db
-*.VC.VC.opendb
-
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-
-# Including strong name files can present a security risk
-# (https://github.com/github/gitignore/pull/2483#issue-259490424)
-#*.snk
-
-# Since there are multiple workflows, uncomment next line to ignore bower_components
-# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
-#bower_components/
-
-# RIA/Silverlight projects
-Generated_Code/
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-# Backup & report files from converting an old project file
-# to a newer Visual Studio version. Backup files are not needed,
-# because we have git ;-)
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-Backup*/
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-UpgradeLog*.htm
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-
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-*- [Bb]ackup.rdl
-*- [Bb]ackup ([0-9]).rdl
-*- [Bb]ackup ([0-9][0-9]).rdl
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-# Microsoft Fakes
-FakesAssemblies/
-
-# GhostDoc plugin setting file
-*.GhostDoc.xml
-
-# Node.js Tools for Visual Studio
-.ntvs_analysis.dat
-node_modules/
-
-# Visual Studio 6 build log
-*.plg
-
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-*.opt
-
-# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
-*.vbw
-
-# Visual Studio LightSwitch build output
-**/*.HTMLClient/GeneratedArtifacts
-**/*.DesktopClient/GeneratedArtifacts
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-**/*.Server/GeneratedArtifacts
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-_Pvt_Extensions
-
-# Paket dependency manager
-.paket/paket.exe
-paket-files/
-
-# FAKE - F# Make
-.fake/
-
-# CodeRush personal settings
-.cr/personal
-
-# Python Tools for Visual Studio (PTVS)
-__pycache__/
-*.pyc
-
-# Cake - Uncomment if you are using it
-# tools/**
-# !tools/packages.config
-
-# Tabs Studio
-*.tss
-
-# Telerik's JustMock configuration file
-*.jmconfig
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-# BizTalk build output
-*.btp.cs
-*.btm.cs
-*.odx.cs
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-OpenCover/
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-ASALocalRun/
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-# MSBuild Binary and Structured Log
-*.binlog
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-.mfractor/
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-# Local History for Visual Studio
-.localhistory/
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-# BeatPulse healthcheck temp database
-healthchecksdb
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-# Backup folder for Package Reference Convert tool in Visual Studio 2017
-MigrationBackup/
-
-# Ionide (cross platform F# VS Code tools) working folder
-.ionide/
-
-# Fody - auto-generated XML schema
-FodyWeavers.xsd
diff --git a/samples/server/petstore/nancyfx-async/.openapi-generator/FILES b/samples/server/petstore/nancyfx-async/.openapi-generator/FILES
deleted file mode 100644
index eabec10a061..00000000000
--- a/samples/server/petstore/nancyfx-async/.openapi-generator/FILES
+++ /dev/null
@@ -1,16 +0,0 @@
-.gitignore
-Org.OpenAPITools.sln
-src/Org.OpenAPITools/Models/ApiResponse.cs
-src/Org.OpenAPITools/Models/Category.cs
-src/Org.OpenAPITools/Models/Order.cs
-src/Org.OpenAPITools/Models/Pet.cs
-src/Org.OpenAPITools/Models/Tag.cs
-src/Org.OpenAPITools/Models/User.cs
-src/Org.OpenAPITools/Modules/PetModule.cs
-src/Org.OpenAPITools/Modules/StoreModule.cs
-src/Org.OpenAPITools/Modules/UserModule.cs
-src/Org.OpenAPITools/Org.OpenAPITools.csproj
-src/Org.OpenAPITools/Org.OpenAPITools.nuspec
-src/Org.OpenAPITools/Utils/LocalDateConverter.cs
-src/Org.OpenAPITools/Utils/Parameters.cs
-src/Org.OpenAPITools/packages.config
diff --git a/samples/server/petstore/nancyfx-async/.openapi-generator/VERSION b/samples/server/petstore/nancyfx-async/.openapi-generator/VERSION
deleted file mode 100644
index d99e7162d01..00000000000
--- a/samples/server/petstore/nancyfx-async/.openapi-generator/VERSION
+++ /dev/null
@@ -1 +0,0 @@
-5.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/Org.OpenAPITools.sln b/samples/server/petstore/nancyfx-async/Org.OpenAPITools.sln
deleted file mode 100644
index 757078a1383..00000000000
--- a/samples/server/petstore/nancyfx-async/Org.OpenAPITools.sln
+++ /dev/null
@@ -1,25 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-VisualStudioVersion = 12.0.0.0
-MinimumVisualStudioVersion = 10.0.0.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Org.OpenAPITools", "src\Org.OpenAPITools\Org.OpenAPITools.csproj", "{768B8DC6-54EE-4D40-9B20-7857E1D742A4}"
-EndProject
-Global
-GlobalSection(SolutionConfigurationPlatforms) = preSolution
-Debug|Any CPU = Debug|Any CPU
-Release|Any CPU = Release|Any CPU
-EndGlobalSection
-GlobalSection(ProjectConfigurationPlatforms) = postSolution
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Debug|Any CPU.Build.0 = Debug|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Release|Any CPU.ActiveCfg = Release|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Release|Any CPU.Build.0 = Release|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Debug|Any CPU.Build.0 = Debug|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Release|Any CPU.ActiveCfg = Release|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Release|Any CPU.Build.0 = Release|Any CPU
-EndGlobalSection
-GlobalSection(SolutionProperties) = preSolution
-HideSolutionNode = FALSE
-EndGlobalSection
-EndGlobal
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/IO.Swagger.csproj b/samples/server/petstore/nancyfx-async/src/IO.Swagger/IO.Swagger.csproj
deleted file mode 100644
index e1577197b6f..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/IO.Swagger.csproj
+++ /dev/null
@@ -1,66 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <PropertyGroup>
-        <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-        <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-        <ProjectGuid>{768B8DC6-54EE-4D40-9B20-7857E1D742A4}</ProjectGuid>
-        <OutputType>Library</OutputType>
-        <AppDesignerFolder>Properties</AppDesignerFolder>
-        <RootNamespace>IO.Swagger.v2</RootNamespace>
-        <AssemblyName>IO.Swagger</AssemblyName>
-            <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-        <FileAlignment>512</FileAlignment>
-    </PropertyGroup>
-    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-        <DebugSymbols>true</DebugSymbols>
-        <DebugType>full</DebugType>
-        <Optimize>false</Optimize>
-        <OutputPath>bin\Debug\</OutputPath>
-        <DefineConstants>DEBUG;TRACE</DefineConstants>
-        <ErrorReport>prompt</ErrorReport>
-        <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Debug\IO.Swagger.XML</DocumentationFile>
-    </PropertyGroup>
-    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-        <DebugType>pdbonly</DebugType>
-        <Optimize>true</Optimize>
-        <OutputPath>bin\Release\</OutputPath>
-        <DefineConstants>TRACE</DefineConstants>
-        <ErrorReport>prompt</ErrorReport>
-        <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Release\IO.Swagger.XML</DocumentationFile>
-    </PropertyGroup>
-    <ItemGroup>
-        <Reference Include="Nancy, Version=1.4.2.0, Culture=neutral, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\Nancy.1.4.3\lib\net40\Nancy.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="NodaTime, Version=1.3.0.0, Culture=neutral, PublicKeyToken=4226afe0d9b296d1, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\NodaTime.1.3.1\lib\net35-Client\NodaTime.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="Sharpility, Version=1.2.2.0, Culture=neutral, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\Sharpility.1.2.2\lib\net45\Sharpility.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="System.Collections.Immutable, Version=1.1.37.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\System.Collections.Immutable.1.1.37\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-            <Private>True</Private>
-        </Reference>        <Reference Include="System"/>
-        <Reference Include="System.Core"/>
-        <Reference Include="System.Xml.Linq"/>
-        <Reference Include="System.Data.DataSetExtensions"/>
-        <Reference Include="Microsoft.CSharp"/>
-        <Reference Include="System.Data"/>
-        <Reference Include="System.Runtime.Serialization"/>
-        <Reference Include="System.Xml"/>
-    </ItemGroup>
-    <ItemGroup>
-        <Compile Include="**\*.cs" Exclude="obj\**"/>
-    </ItemGroup>
-    <ItemGroup>
-        <Content Include="packages.config"/>
-    </ItemGroup>
-    <Import Project="$(MsBuildToolsPath)\Microsoft.CSharp.targets"/>
-</Project>
-
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/IO.Swagger.nuspec b/samples/server/petstore/nancyfx-async/src/IO.Swagger/IO.Swagger.nuspec
deleted file mode 100644
index 360effbaf7f..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/IO.Swagger.nuspec
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0"?>
-<package>
-    <metadata>
-        <id>IO.Swagger</id>
-        <title>IO.Swagger</title>
-        <version>1.0.0</version>
-        <authors>swagger-codegen</authors>
-        <owners>swagger-codegen</owners>
-        <requireLicenseAcceptance>false</requireLicenseAcceptance>
-        <description>NancyFx IO.Swagger API</description>
-        <copyright>http://swagger.io/terms/</copyright>
-        <licenseUrl>https://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>
-    </metadata>
-</package>
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/ApiResponse.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/ApiResponse.cs
deleted file mode 100644
index ebaa3c8d4f1..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/ApiResponse.cs
+++ /dev/null
@@ -1,185 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace IO.Swagger.v2.Models
-{
-    /// <summary>
-    /// Describes the result of uploading an image resource
-    /// </summary>
-    public sealed class ApiResponse:  IEquatable<ApiResponse>
-    { 
-        /// <summary>
-        /// Code
-        /// </summary>
-        public int? Code { get; private set; }
-
-        /// <summary>
-        /// Type
-        /// </summary>
-        public string Type { get; private set; }
-
-        /// <summary>
-        /// Message
-        /// </summary>
-        public string Message { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use ApiResponse.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public ApiResponse()
-        {
-        }
-
-        private ApiResponse(int? Code, string Type, string Message)
-        {
-            
-            this.Code = Code;
-            
-            this.Type = Type;
-            
-            this.Message = Message;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of ApiResponse.
-        /// </summary>
-        /// <returns>ApiResponseBuilder</returns>
-        public static ApiResponseBuilder Builder()
-        {
-            return new ApiResponseBuilder();
-        }
-
-        /// <summary>
-        /// Returns ApiResponseBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>ApiResponseBuilder</returns>
-        public ApiResponseBuilder With()
-        {
-            return Builder()
-                .Code(Code)
-                .Type(Type)
-                .Message(Message);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(ApiResponse other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (ApiResponse.
-        /// </summary>
-        /// <param name="left">Compared (ApiResponse</param>
-        /// <param name="right">Compared (ApiResponse</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (ApiResponse left, ApiResponse right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (ApiResponse.
-        /// </summary>
-        /// <param name="left">Compared (ApiResponse</param>
-        /// <param name="right">Compared (ApiResponse</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (ApiResponse left, ApiResponse right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of ApiResponse.
-        /// </summary>
-        public sealed class ApiResponseBuilder
-        {
-            private int? _Code;
-            private string _Type;
-            private string _Message;
-
-            internal ApiResponseBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Code property.
-            /// </summary>
-            /// <param name="value">Code</param>
-            public ApiResponseBuilder Code(int? value)
-            {
-                _Code = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Type property.
-            /// </summary>
-            /// <param name="value">Type</param>
-            public ApiResponseBuilder Type(string value)
-            {
-                _Type = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Message property.
-            /// </summary>
-            /// <param name="value">Message</param>
-            public ApiResponseBuilder Message(string value)
-            {
-                _Message = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of ApiResponse.
-            /// </summary>
-            /// <returns>ApiResponse</returns>
-            public ApiResponse Build()
-            {
-                Validate();
-                return new ApiResponse(
-                    Code: _Code,
-                    Type: _Type,
-                    Message: _Message
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Category.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Category.cs
deleted file mode 100644
index bf811614b37..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Category.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace IO.Swagger.v2.Models
-{
-    /// <summary>
-    /// A category for a pet
-    /// </summary>
-    public sealed class Category:  IEquatable<Category>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Category.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Category()
-        {
-        }
-
-        private Category(long? Id, string Name)
-        {
-            
-            this.Id = Id;
-            
-            this.Name = Name;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Category.
-        /// </summary>
-        /// <returns>CategoryBuilder</returns>
-        public static CategoryBuilder Builder()
-        {
-            return new CategoryBuilder();
-        }
-
-        /// <summary>
-        /// Returns CategoryBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>CategoryBuilder</returns>
-        public CategoryBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Name(Name);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Category other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Category.
-        /// </summary>
-        /// <param name="left">Compared (Category</param>
-        /// <param name="right">Compared (Category</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Category left, Category right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Category.
-        /// </summary>
-        /// <param name="left">Compared (Category</param>
-        /// <param name="right">Compared (Category</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Category left, Category right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Category.
-        /// </summary>
-        public sealed class CategoryBuilder
-        {
-            private long? _Id;
-            private string _Name;
-
-            internal CategoryBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Category.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public CategoryBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Category.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public CategoryBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Category.
-            /// </summary>
-            /// <returns>Category</returns>
-            public Category Build()
-            {
-                Validate();
-                return new Category(
-                    Id: _Id,
-                    Name: _Name
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Order.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Order.cs
deleted file mode 100644
index 0495a36f138..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Order.cs
+++ /dev/null
@@ -1,247 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace IO.Swagger.v2.Models
-{
-    /// <summary>
-    /// An order for a pets from the pet store
-    /// </summary>
-    public sealed class Order:  IEquatable<Order>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// PetId
-        /// </summary>
-        public long? PetId { get; private set; }
-
-        /// <summary>
-        /// Quantity
-        /// </summary>
-        public int? Quantity { get; private set; }
-
-        /// <summary>
-        /// ShipDate
-        /// </summary>
-        public ZonedDateTime? ShipDate { get; private set; }
-
-        /// <summary>
-        /// Order Status
-        /// </summary>
-        public StatusEnum? Status { get; private set; }
-
-        /// <summary>
-        /// Complete
-        /// </summary>
-        public bool? Complete { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Order.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Order()
-        {
-        }
-
-        private Order(long? Id, long? PetId, int? Quantity, ZonedDateTime? ShipDate, StatusEnum? Status, bool? Complete)
-        {
-            
-            this.Id = Id;
-            
-            this.PetId = PetId;
-            
-            this.Quantity = Quantity;
-            
-            this.ShipDate = ShipDate;
-            
-            this.Status = Status;
-            
-            this.Complete = Complete;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Order.
-        /// </summary>
-        /// <returns>OrderBuilder</returns>
-        public static OrderBuilder Builder()
-        {
-            return new OrderBuilder();
-        }
-
-        /// <summary>
-        /// Returns OrderBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>OrderBuilder</returns>
-        public OrderBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .PetId(PetId)
-                .Quantity(Quantity)
-                .ShipDate(ShipDate)
-                .Status(Status)
-                .Complete(Complete);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Order other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Order.
-        /// </summary>
-        /// <param name="left">Compared (Order</param>
-        /// <param name="right">Compared (Order</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Order left, Order right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Order.
-        /// </summary>
-        /// <param name="left">Compared (Order</param>
-        /// <param name="right">Compared (Order</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Order left, Order right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Order.
-        /// </summary>
-        public sealed class OrderBuilder
-        {
-            private long? _Id;
-            private long? _PetId;
-            private int? _Quantity;
-            private ZonedDateTime? _ShipDate;
-            private StatusEnum? _Status;
-            private bool? _Complete;
-
-            internal OrderBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-                _Complete = false;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public OrderBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.PetId property.
-            /// </summary>
-            /// <param name="value">PetId</param>
-            public OrderBuilder PetId(long? value)
-            {
-                _PetId = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Quantity property.
-            /// </summary>
-            /// <param name="value">Quantity</param>
-            public OrderBuilder Quantity(int? value)
-            {
-                _Quantity = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.ShipDate property.
-            /// </summary>
-            /// <param name="value">ShipDate</param>
-            public OrderBuilder ShipDate(ZonedDateTime? value)
-            {
-                _ShipDate = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Status property.
-            /// </summary>
-            /// <param name="value">Order Status</param>
-            public OrderBuilder Status(StatusEnum? value)
-            {
-                _Status = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Complete property.
-            /// </summary>
-            /// <param name="value">Complete</param>
-            public OrderBuilder Complete(bool? value)
-            {
-                _Complete = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Order.
-            /// </summary>
-            /// <returns>Order</returns>
-            public Order Build()
-            {
-                Validate();
-                return new Order(
-                    Id: _Id,
-                    PetId: _PetId,
-                    Quantity: _Quantity,
-                    ShipDate: _ShipDate,
-                    Status: _Status,
-                    Complete: _Complete
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-        public enum StatusEnum { Placed, Approved, Delivered };
-    }
-}
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Pet.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Pet.cs
deleted file mode 100644
index f945a0fdd78..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Pet.cs
+++ /dev/null
@@ -1,254 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace IO.Swagger.v2.Models
-{
-    /// <summary>
-    /// A pet for sale in the pet store
-    /// </summary>
-    public sealed class Pet:  IEquatable<Pet>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Category
-        /// </summary>
-        public Category Category { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-        /// <summary>
-        /// PhotoUrls
-        /// </summary>
-        public List<string> PhotoUrls { get; private set; }
-
-        /// <summary>
-        /// Tags
-        /// </summary>
-        public List<Tag> Tags { get; private set; }
-
-        /// <summary>
-        /// pet status in the store
-        /// </summary>
-        public StatusEnum? Status { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Pet.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Pet()
-        {
-        }
-
-        private Pet(long? Id, Category Category, string Name, List<string> PhotoUrls, List<Tag> Tags, StatusEnum? Status)
-        {
-            
-            this.Id = Id;
-            
-            this.Category = Category;
-            
-            this.Name = Name;
-            
-            this.PhotoUrls = PhotoUrls;
-            
-            this.Tags = Tags;
-            
-            this.Status = Status;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Pet.
-        /// </summary>
-        /// <returns>PetBuilder</returns>
-        public static PetBuilder Builder()
-        {
-            return new PetBuilder();
-        }
-
-        /// <summary>
-        /// Returns PetBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>PetBuilder</returns>
-        public PetBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Category(Category)
-                .Name(Name)
-                .PhotoUrls(PhotoUrls)
-                .Tags(Tags)
-                .Status(Status);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Pet other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Pet.
-        /// </summary>
-        /// <param name="left">Compared (Pet</param>
-        /// <param name="right">Compared (Pet</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Pet left, Pet right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Pet.
-        /// </summary>
-        /// <param name="left">Compared (Pet</param>
-        /// <param name="right">Compared (Pet</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Pet left, Pet right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Pet.
-        /// </summary>
-        public sealed class PetBuilder
-        {
-            private long? _Id;
-            private Category _Category;
-            private string _Name;
-            private List<string> _PhotoUrls;
-            private List<Tag> _Tags;
-            private StatusEnum? _Status;
-
-            internal PetBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public PetBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Category property.
-            /// </summary>
-            /// <param name="value">Category</param>
-            public PetBuilder Category(Category value)
-            {
-                _Category = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public PetBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.PhotoUrls property.
-            /// </summary>
-            /// <param name="value">PhotoUrls</param>
-            public PetBuilder PhotoUrls(List<string> value)
-            {
-                _PhotoUrls = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Tags property.
-            /// </summary>
-            /// <param name="value">Tags</param>
-            public PetBuilder Tags(List<Tag> value)
-            {
-                _Tags = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Status property.
-            /// </summary>
-            /// <param name="value">pet status in the store</param>
-            public PetBuilder Status(StatusEnum? value)
-            {
-                _Status = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Pet.
-            /// </summary>
-            /// <returns>Pet</returns>
-            public Pet Build()
-            {
-                Validate();
-                return new Pet(
-                    Id: _Id,
-                    Category: _Category,
-                    Name: _Name,
-                    PhotoUrls: _PhotoUrls,
-                    Tags: _Tags,
-                    Status: _Status
-                );
-            }
-
-            private void Validate()
-            { 
-                if (_Name == null)
-                {
-                    throw new ArgumentException("Name is a required property for Pet and cannot be null");
-                } 
-                if (_PhotoUrls == null)
-                {
-                    throw new ArgumentException("PhotoUrls is a required property for Pet and cannot be null");
-                } 
-            }
-        }
-
-        
-        public enum StatusEnum { Available, Pending, Sold };
-    }
-}
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Tag.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Tag.cs
deleted file mode 100644
index 02d1e40f1ec..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/Tag.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace IO.Swagger.v2.Models
-{
-    /// <summary>
-    /// A tag for a pet
-    /// </summary>
-    public sealed class Tag:  IEquatable<Tag>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Tag.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Tag()
-        {
-        }
-
-        private Tag(long? Id, string Name)
-        {
-            
-            this.Id = Id;
-            
-            this.Name = Name;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Tag.
-        /// </summary>
-        /// <returns>TagBuilder</returns>
-        public static TagBuilder Builder()
-        {
-            return new TagBuilder();
-        }
-
-        /// <summary>
-        /// Returns TagBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>TagBuilder</returns>
-        public TagBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Name(Name);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Tag other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Tag.
-        /// </summary>
-        /// <param name="left">Compared (Tag</param>
-        /// <param name="right">Compared (Tag</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Tag left, Tag right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Tag.
-        /// </summary>
-        /// <param name="left">Compared (Tag</param>
-        /// <param name="right">Compared (Tag</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Tag left, Tag right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Tag.
-        /// </summary>
-        public sealed class TagBuilder
-        {
-            private long? _Id;
-            private string _Name;
-
-            internal TagBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Tag.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public TagBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Tag.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public TagBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Tag.
-            /// </summary>
-            /// <returns>Tag</returns>
-            public Tag Build()
-            {
-                Validate();
-                return new Tag(
-                    Id: _Id,
-                    Name: _Name
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/User.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/User.cs
deleted file mode 100644
index 99f401750df..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Models/User.cs
+++ /dev/null
@@ -1,285 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace IO.Swagger.v2.Models
-{
-    /// <summary>
-    /// A User who is purchasing from the pet store
-    /// </summary>
-    public sealed class User:  IEquatable<User>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Username
-        /// </summary>
-        public string Username { get; private set; }
-
-        /// <summary>
-        /// FirstName
-        /// </summary>
-        public string FirstName { get; private set; }
-
-        /// <summary>
-        /// LastName
-        /// </summary>
-        public string LastName { get; private set; }
-
-        /// <summary>
-        /// Email
-        /// </summary>
-        public string Email { get; private set; }
-
-        /// <summary>
-        /// Password
-        /// </summary>
-        public string Password { get; private set; }
-
-        /// <summary>
-        /// Phone
-        /// </summary>
-        public string Phone { get; private set; }
-
-        /// <summary>
-        /// User Status
-        /// </summary>
-        public int? UserStatus { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use User.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public User()
-        {
-        }
-
-        private User(long? Id, string Username, string FirstName, string LastName, string Email, string Password, string Phone, int? UserStatus)
-        {
-            
-            this.Id = Id;
-            
-            this.Username = Username;
-            
-            this.FirstName = FirstName;
-            
-            this.LastName = LastName;
-            
-            this.Email = Email;
-            
-            this.Password = Password;
-            
-            this.Phone = Phone;
-            
-            this.UserStatus = UserStatus;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of User.
-        /// </summary>
-        /// <returns>UserBuilder</returns>
-        public static UserBuilder Builder()
-        {
-            return new UserBuilder();
-        }
-
-        /// <summary>
-        /// Returns UserBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>UserBuilder</returns>
-        public UserBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Username(Username)
-                .FirstName(FirstName)
-                .LastName(LastName)
-                .Email(Email)
-                .Password(Password)
-                .Phone(Phone)
-                .UserStatus(UserStatus);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(User other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (User.
-        /// </summary>
-        /// <param name="left">Compared (User</param>
-        /// <param name="right">Compared (User</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (User left, User right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (User.
-        /// </summary>
-        /// <param name="left">Compared (User</param>
-        /// <param name="right">Compared (User</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (User left, User right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of User.
-        /// </summary>
-        public sealed class UserBuilder
-        {
-            private long? _Id;
-            private string _Username;
-            private string _FirstName;
-            private string _LastName;
-            private string _Email;
-            private string _Password;
-            private string _Phone;
-            private int? _UserStatus;
-
-            internal UserBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for User.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public UserBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Username property.
-            /// </summary>
-            /// <param name="value">Username</param>
-            public UserBuilder Username(string value)
-            {
-                _Username = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.FirstName property.
-            /// </summary>
-            /// <param name="value">FirstName</param>
-            public UserBuilder FirstName(string value)
-            {
-                _FirstName = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.LastName property.
-            /// </summary>
-            /// <param name="value">LastName</param>
-            public UserBuilder LastName(string value)
-            {
-                _LastName = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Email property.
-            /// </summary>
-            /// <param name="value">Email</param>
-            public UserBuilder Email(string value)
-            {
-                _Email = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Password property.
-            /// </summary>
-            /// <param name="value">Password</param>
-            public UserBuilder Password(string value)
-            {
-                _Password = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Phone property.
-            /// </summary>
-            /// <param name="value">Phone</param>
-            public UserBuilder Phone(string value)
-            {
-                _Phone = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.UserStatus property.
-            /// </summary>
-            /// <param name="value">User Status</param>
-            public UserBuilder UserStatus(int? value)
-            {
-                _UserStatus = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of User.
-            /// </summary>
-            /// <returns>User</returns>
-            public User Build()
-            {
-                Validate();
-                return new User(
-                    Id: _Id,
-                    Username: _Username,
-                    FirstName: _FirstName,
-                    LastName: _LastName,
-                    Email: _Email,
-                    Password: _Password,
-                    Phone: _Phone,
-                    UserStatus: _UserStatus
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/PetModule.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/PetModule.cs
deleted file mode 100644
index 6b3e8cc1db8..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/PetModule.cs
+++ /dev/null
@@ -1,247 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using IO.Swagger.v2.Models;
-using IO.Swagger.v2.Utils;
-using NodaTime;
-using System.Threading.Tasks;
-
-namespace IO.Swagger.v2.Modules
-{ 
-    /// <summary>
-    /// Status values that need to be considered for filter
-    /// </summary>
-    public enum FindPetsByStatusStatusEnum
-    {
-        available = 1, 
-        pending = 2, 
-        sold = 3
-    };
-
-
-    /// <summary>
-    /// Module processing requests of Pet domain.
-    /// </summary>
-    public sealed class PetModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public PetModule(PetService service) : base("/v2")
-        { 
-            Post["/pet", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<Pet>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'AddPet'");
-                
-                await service.AddPet(Context, body);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Delete["/pet/{petId}", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var apiKey = Parameters.ValueOf<string>(parameters, Context.Request, "apiKey", ParameterType.Header);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'DeletePet'");
-                
-                await service.DeletePet(Context, petId, apiKey);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Get["/pet/findByStatus", true] = async (parameters, ct) =>
-            {
-                var status = Parameters.ValueOf<FindPetsByStatusStatusEnum?>(parameters, Context.Request, "status", ParameterType.Query);
-                Preconditions.IsNotNull(status, "Required parameter: 'status' is missing at 'FindPetsByStatus'");
-                
-                return await service.FindPetsByStatus(Context, status).ToArray();
-            };
-
-            Get["/pet/findByTags", true] = async (parameters, ct) =>
-            {
-                var tags = Parameters.ValueOf<List<string>>(parameters, Context.Request, "tags", ParameterType.Query);
-                Preconditions.IsNotNull(tags, "Required parameter: 'tags' is missing at 'FindPetsByTags'");
-                
-                return await service.FindPetsByTags(Context, tags).ToArray();
-            };
-
-            Get["/pet/{petId}", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'GetPetById'");
-                
-                return await service.GetPetById(Context, petId);
-            };
-
-            Put["/pet", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<Pet>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'UpdatePet'");
-                
-                await service.UpdatePet(Context, body);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Post["/pet/{petId}", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var name = Parameters.ValueOf<string>(parameters, Context.Request, "name", ParameterType.Undefined);
-                var status = Parameters.ValueOf<string>(parameters, Context.Request, "status", ParameterType.Undefined);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'UpdatePetWithForm'");
-                
-                await service.UpdatePetWithForm(Context, petId, name, status);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Post["/pet/{petId}/uploadImage", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var additionalMetadata = Parameters.ValueOf<string>(parameters, Context.Request, "additionalMetadata", ParameterType.Undefined);
-                var file = Parameters.ValueOf<System.IO.Stream>(parameters, Context.Request, "file", ParameterType.Undefined);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'UploadFile'");
-                
-                return await service.UploadFile(Context, petId, additionalMetadata, file);
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling Pet requests.
-    /// </summary>
-    public interface PetService
-    {
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Pet object that needs to be added to the store</param>
-        /// <returns></returns>
-        Task AddPet(NancyContext context, Pet body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">Pet id to delete</param>
-        /// <param name="apiKey"> (optional)</param>
-        /// <returns></returns>
-        Task DeletePet(NancyContext context, long? petId, string apiKey);
-
-        /// <summary>
-        /// Multiple status values can be provided with comma separated strings
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="status">Status values that need to be considered for filter</param>
-        /// <returns>List&lt;Pet&gt;</returns>
-        Task<List<Pet>> FindPetsByStatus(NancyContext context, FindPetsByStatusStatusEnum? status);
-
-        /// <summary>
-        /// Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="tags">Tags to filter by</param>
-        /// <returns>List&lt;Pet&gt;</returns>
-        Task<List<Pet>> FindPetsByTags(NancyContext context, List<string> tags);
-
-        /// <summary>
-        /// Returns a single pet
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet to return</param>
-        /// <returns>Pet</returns>
-        Task<Pet> GetPetById(NancyContext context, long? petId);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Pet object that needs to be added to the store</param>
-        /// <returns></returns>
-        Task UpdatePet(NancyContext context, Pet body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet that needs to be updated</param>
-        /// <param name="name">Updated name of the pet (optional)</param>
-        /// <param name="status">Updated status of the pet (optional)</param>
-        /// <returns></returns>
-        Task UpdatePetWithForm(NancyContext context, long? petId, string name, string status);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet to update</param>
-        /// <param name="additionalMetadata">Additional data to pass to server (optional)</param>
-        /// <param name="file">file to upload (optional)</param>
-        /// <returns>ApiResponse</returns>
-        Task<ApiResponse> UploadFile(NancyContext context, long? petId, string additionalMetadata, System.IO.Stream file);
-    }
-
-    /// <summary>
-    /// Abstraction of PetService.
-    /// </summary>
-    public abstract class AbstractPetService: PetService
-    {
-        public virtual Task AddPet(NancyContext context, Pet body)
-        {
-            return AddPet(body);
-        }
-
-        public virtual Task DeletePet(NancyContext context, long? petId, string apiKey)
-        {
-            return DeletePet(petId, apiKey);
-        }
-
-        public virtual Task<List<Pet>> FindPetsByStatus(NancyContext context, FindPetsByStatusStatusEnum? status)
-        {
-            return FindPetsByStatus(status);
-        }
-
-        public virtual Task<List<Pet>> FindPetsByTags(NancyContext context, List<string> tags)
-        {
-            return FindPetsByTags(tags);
-        }
-
-        public virtual Task<Pet> GetPetById(NancyContext context, long? petId)
-        {
-            return GetPetById(petId);
-        }
-
-        public virtual Task UpdatePet(NancyContext context, Pet body)
-        {
-            return UpdatePet(body);
-        }
-
-        public virtual Task UpdatePetWithForm(NancyContext context, long? petId, string name, string status)
-        {
-            return UpdatePetWithForm(petId, name, status);
-        }
-
-        public virtual Task<ApiResponse> UploadFile(NancyContext context, long? petId, string additionalMetadata, System.IO.Stream file)
-        {
-            return UploadFile(petId, additionalMetadata, file);
-        }
-
-        protected abstract Task AddPet(Pet body);
-
-        protected abstract Task DeletePet(long? petId, string apiKey);
-
-        protected abstract Task<List<Pet>> FindPetsByStatus(FindPetsByStatusStatusEnum? status);
-
-        protected abstract Task<List<Pet>> FindPetsByTags(List<string> tags);
-
-        protected abstract Task<Pet> GetPetById(long? petId);
-
-        protected abstract Task UpdatePet(Pet body);
-
-        protected abstract Task UpdatePetWithForm(long? petId, string name, string status);
-
-        protected abstract Task<ApiResponse> UploadFile(long? petId, string additionalMetadata, System.IO.Stream file);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/StoreModule.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/StoreModule.cs
deleted file mode 100644
index 30c46234256..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/StoreModule.cs
+++ /dev/null
@@ -1,129 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using IO.Swagger.v2.Models;
-using IO.Swagger.v2.Utils;
-using NodaTime;
-using System.Threading.Tasks;
-
-namespace IO.Swagger.v2.Modules
-{ 
-
-    /// <summary>
-    /// Module processing requests of Store domain.
-    /// </summary>
-    public sealed class StoreModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public StoreModule(StoreService service) : base("/v2")
-        { 
-            Delete["/store/order/{orderId}", true] = async (parameters, ct) =>
-            {
-                var orderId = Parameters.ValueOf<string>(parameters, Context.Request, "orderId", ParameterType.Path);
-                Preconditions.IsNotNull(orderId, "Required parameter: 'orderId' is missing at 'DeleteOrder'");
-                
-                await service.DeleteOrder(Context, orderId);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Get["/store/inventory", true] = async (parameters, ct) =>
-            {
-                
-                return await service.GetInventory(Context);
-            };
-
-            Get["/store/order/{orderId}", true] = async (parameters, ct) =>
-            {
-                var orderId = Parameters.ValueOf<long?>(parameters, Context.Request, "orderId", ParameterType.Path);
-                Preconditions.IsNotNull(orderId, "Required parameter: 'orderId' is missing at 'GetOrderById'");
-                
-                return await service.GetOrderById(Context, orderId);
-            };
-
-            Post["/store/order", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<Order>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'PlaceOrder'");
-                
-                return await service.PlaceOrder(Context, body);
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling Store requests.
-    /// </summary>
-    public interface StoreService
-    {
-        /// <summary>
-        /// For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="orderId">ID of the order that needs to be deleted</param>
-        /// <returns></returns>
-        Task DeleteOrder(NancyContext context, string orderId);
-
-        /// <summary>
-        /// Returns a map of status codes to quantities
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <returns>Dictionary&lt;string, int?&gt;</returns>
-        Task<Dictionary<string, int?>> GetInventory(NancyContext context);
-
-        /// <summary>
-        /// For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="orderId">ID of pet that needs to be fetched</param>
-        /// <returns>Order</returns>
-        Task<Order> GetOrderById(NancyContext context, long? orderId);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">order placed for purchasing the pet</param>
-        /// <returns>Order</returns>
-        Task<Order> PlaceOrder(NancyContext context, Order body);
-    }
-
-    /// <summary>
-    /// Abstraction of StoreService.
-    /// </summary>
-    public abstract class AbstractStoreService: StoreService
-    {
-        public virtual Task DeleteOrder(NancyContext context, string orderId)
-        {
-            return DeleteOrder(orderId);
-        }
-
-        public virtual Task<Dictionary<string, int?>> GetInventory(NancyContext context)
-        {
-            return GetInventory();
-        }
-
-        public virtual Task<Order> GetOrderById(NancyContext context, long? orderId)
-        {
-            return GetOrderById(orderId);
-        }
-
-        public virtual Task<Order> PlaceOrder(NancyContext context, Order body)
-        {
-            return PlaceOrder(body);
-        }
-
-        protected abstract Task DeleteOrder(string orderId);
-
-        protected abstract Task<Dictionary<string, int?>> GetInventory();
-
-        protected abstract Task<Order> GetOrderById(long? orderId);
-
-        protected abstract Task<Order> PlaceOrder(Order body);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/UserModule.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/UserModule.cs
deleted file mode 100644
index 4faf9e38dbd..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Modules/UserModule.cs
+++ /dev/null
@@ -1,234 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using IO.Swagger.v2.Models;
-using IO.Swagger.v2.Utils;
-using NodaTime;
-using System.Threading.Tasks;
-
-namespace IO.Swagger.v2.Modules
-{ 
-
-    /// <summary>
-    /// Module processing requests of User domain.
-    /// </summary>
-    public sealed class UserModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public UserModule(UserService service) : base("/v2")
-        { 
-            Post["/user", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<User>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUser'");
-                
-                await service.CreateUser(Context, body);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Post["/user/createWithArray", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<List<User>>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUsersWithArrayInput'");
-                
-                await service.CreateUsersWithArrayInput(Context, body);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Post["/user/createWithList", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<List<User>>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUsersWithListInput'");
-                
-                await service.CreateUsersWithListInput(Context, body);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Delete["/user/{username}", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'DeleteUser'");
-                
-                await service.DeleteUser(Context, username);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Get["/user/{username}", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'GetUserByName'");
-                
-                return await service.GetUserByName(Context, username);
-            };
-
-            Get["/user/login", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Query);
-                var password = Parameters.ValueOf<string>(parameters, Context.Request, "password", ParameterType.Query);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'LoginUser'");
-                
-                Preconditions.IsNotNull(password, "Required parameter: 'password' is missing at 'LoginUser'");
-                
-                return await service.LoginUser(Context, username, password);
-            };
-
-            Get["/user/logout", true] = async (parameters, ct) =>
-            {
-                
-                await service.LogoutUser(Context);
-                return new Response { ContentType = "application/xml"};
-            };
-
-            Put["/user/{username}", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                var body = this.Bind<User>();
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'UpdateUser'");
-                
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'UpdateUser'");
-                
-                await service.UpdateUser(Context, username, body);
-                return new Response { ContentType = "application/xml"};
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling User requests.
-    /// </summary>
-    public interface UserService
-    {
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Created user object</param>
-        /// <returns></returns>
-        Task CreateUser(NancyContext context, User body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">List of user object</param>
-        /// <returns></returns>
-        Task CreateUsersWithArrayInput(NancyContext context, List<User> body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">List of user object</param>
-        /// <returns></returns>
-        Task CreateUsersWithListInput(NancyContext context, List<User> body);
-
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The name that needs to be deleted</param>
-        /// <returns></returns>
-        Task DeleteUser(NancyContext context, string username);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The name that needs to be fetched. Use user1 for testing. </param>
-        /// <returns>User</returns>
-        Task<User> GetUserByName(NancyContext context, string username);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The user name for login</param>
-        /// <param name="password">The password for login in clear text</param>
-        /// <returns>string</returns>
-        Task<string> LoginUser(NancyContext context, string username, string password);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <returns></returns>
-        Task LogoutUser(NancyContext context);
-
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">name that need to be deleted</param>
-        /// <param name="body">Updated user object</param>
-        /// <returns></returns>
-        Task UpdateUser(NancyContext context, string username, User body);
-    }
-
-    /// <summary>
-    /// Abstraction of UserService.
-    /// </summary>
-    public abstract class AbstractUserService: UserService
-    {
-        public virtual Task CreateUser(NancyContext context, User body)
-        {
-            return CreateUser(body);
-        }
-
-        public virtual Task CreateUsersWithArrayInput(NancyContext context, List<User> body)
-        {
-            return CreateUsersWithArrayInput(body);
-        }
-
-        public virtual Task CreateUsersWithListInput(NancyContext context, List<User> body)
-        {
-            return CreateUsersWithListInput(body);
-        }
-
-        public virtual Task DeleteUser(NancyContext context, string username)
-        {
-            return DeleteUser(username);
-        }
-
-        public virtual Task<User> GetUserByName(NancyContext context, string username)
-        {
-            return GetUserByName(username);
-        }
-
-        public virtual Task<string> LoginUser(NancyContext context, string username, string password)
-        {
-            return LoginUser(username, password);
-        }
-
-        public virtual Task LogoutUser(NancyContext context)
-        {
-            return LogoutUser();
-        }
-
-        public virtual Task UpdateUser(NancyContext context, string username, User body)
-        {
-            return UpdateUser(username, body);
-        }
-
-        protected abstract Task CreateUser(User body);
-
-        protected abstract Task CreateUsersWithArrayInput(List<User> body);
-
-        protected abstract Task CreateUsersWithListInput(List<User> body);
-
-        protected abstract Task DeleteUser(string username);
-
-        protected abstract Task<User> GetUserByName(string username);
-
-        protected abstract Task<string> LoginUser(string username, string password);
-
-        protected abstract Task LogoutUser();
-
-        protected abstract Task UpdateUser(string username, User body);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Utils/LocalDateConverter.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Utils/LocalDateConverter.cs
deleted file mode 100644
index d801e962c6a..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Utils/LocalDateConverter.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using Nancy.Bootstrapper;
-using Nancy.Json;
-using NodaTime;
-using NodaTime.Text;
-using System;
-using System.Collections.Generic;
-
-namespace IO.Swagger.v2.Utils
-{
-    /// <summary>
-    /// (De)serializes a <see cref="NodaTime.LocalDate"/> to a string using 
-    /// the <a href="https://xml2rfc.tools.ietf.org/public/rfc/html/rfc3339.html#anchor14">RFC3339</a> 
-    /// <code>full-date</code> format.
-    /// </summary>
-    public class LocalDateConverter : JavaScriptPrimitiveConverter, IApplicationStartup
-    {
-        public override IEnumerable<Type> SupportedTypes
-        {
-            get
-            {
-                yield return typeof(LocalDate);
-                yield return typeof(LocalDate?);
-            }
-        }
-
-        public void Initialize(IPipelines pipelines)
-        {
-            JsonSettings.PrimitiveConverters.Add(new LocalDateConverter());
-        }
-
-
-        public override object Serialize(object obj, JavaScriptSerializer serializer)
-        {
-            if (obj is LocalDate)
-            {
-                LocalDate localDate = (LocalDate)obj;
-                return LocalDatePattern.IsoPattern.Format(localDate);
-            }
-            return null;
-        }
-
-        public override object Deserialize(object primitiveValue, Type type, JavaScriptSerializer serializer)
-        {
-            if ((type == typeof(LocalDate) || type == typeof(LocalDate?)) && primitiveValue is string)
-            {
-                try
-                {
-                    return LocalDatePattern.IsoPattern.Parse(primitiveValue as string).GetValueOrThrow();
-                }
-                catch { }
-            }
-            return null;
-        }
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Utils/Parameters.cs b/samples/server/petstore/nancyfx-async/src/IO.Swagger/Utils/Parameters.cs
deleted file mode 100644
index d2198945763..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/Utils/Parameters.cs
+++ /dev/null
@@ -1,450 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.Immutable;
-using System.Linq;
-using Nancy;
-using NodaTime;
-using NodaTime.Text;
-using Sharpility.Base;
-using Sharpility.Extensions;
-using Sharpility.Util;
-
-namespace IO.Swagger.v2.Utils
-{
-    internal static class Parameters
-    {
-        private static readonly IDictionary<Type, Func<Parameter, object>> Parsers = CreateParsers();
-
-        internal static TValue ValueOf<TValue>(dynamic parameters, Request request, string name, ParameterType parameterType)
-        {
-            var valueType = typeof(TValue);
-            var valueUnderlyingType = Nullable.GetUnderlyingType(valueType);
-            var isNullable = default(TValue) == null;
-            string value = RawValueOf(parameters, request, name, parameterType);
-            Preconditions.Evaluate(!string.IsNullOrEmpty(value) || isNullable, string.Format("Required parameter: '{0}' is missing", name));
-            if (value == null && isNullable)
-            {
-                return default(TValue);
-            }
-            if (valueType.IsEnum || (valueUnderlyingType != null && valueUnderlyingType.IsEnum))
-            {
-                return EnumValueOf<TValue>(name, value);
-            }
-            return ValueOf<TValue>(parameters, name, value, valueType, request, parameterType);
-        }
-
-        private static string RawValueOf(dynamic parameters, Request request, string name, ParameterType parameterType)
-        {
-            try
-            {
-                switch (parameterType)
-                {
-                    case ParameterType.Query:
-                        string querValue = request.Query[name];
-                        return querValue;
-                    case ParameterType.Path:
-                        string pathValue = parameters[name];
-                        return pathValue;
-                    case ParameterType.Header:
-                        var headerValue = request.Headers[name];
-                        return headerValue != null ? string.Join(",", headerValue) : null;
-                }
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(string.Format("Could not obtain value of '{0}' parameter", name), e);
-            }
-            throw new InvalidOperationException(string.Format("Parameter with type: {0} is not supported", parameterType));
-        }
-
-        private static TValue EnumValueOf<TValue>(string name, string value)
-        {
-            var valueType = typeof(TValue);
-            var enumType = valueType.IsEnum ? valueType : Nullable.GetUnderlyingType(valueType);
-            Preconditions.IsNotNull(enumType, () => new InvalidOperationException(
-                string.Format("Could not parse parameter: '{0}' to enum. Type {1} is not enum", name, valueType)));
-            var values = Enum.GetValues(enumType);
-            foreach (var entry in values)
-            {
-                if (entry.ToString().EqualsIgnoreCases(value)
-                    || ((int)entry).ToString().EqualsIgnoreCases(value))
-                {
-                    return (TValue)entry;
-                }
-            }
-            throw new ArgumentException(string.Format("Parameter: '{0}' value: '{1}' is not supported. Expected one of: {2}",
-                    name, value, Strings.ToString(values)));
-        }
-
-        private static TValue ValueOf<TValue>(dynamic parameters, string name, string value, Type valueType, Request request, ParameterType parameterType)
-        {
-            var parser = Parsers.GetIfPresent(valueType);
-            if (parser != null)
-            {
-                return ParseValueUsing<TValue>(name, value, valueType, parser);
-            }
-            if (parameterType == ParameterType.Path)
-            {
-                return DynamicValueOf<TValue>(parameters, name);
-            }
-            if (parameterType == ParameterType.Query)
-            {
-                return DynamicValueOf<TValue>(request.Query, name);
-            }
-            throw new InvalidOperationException(string.Format("Could not get value for {0} with type {1}", name, valueType));
-        }
-
-        private static TValue ParseValueUsing<TValue>(string name, string value, Type valueType, Func<Parameter, object> parser)
-        {
-            var result = parser(Parameter.Of(name, value));
-            try
-            {
-                return (TValue)result;
-            }
-            catch (InvalidCastException)
-            {
-                throw new InvalidOperationException(
-                    string.Format("Could not parse parameter: '{0}' with value: '{1}'. " +
-                                  "Received: '{2}', expected: '{3}'.",
-                                  name, value, result.GetType(), valueType));
-            }
-        }
-
-        private static TValue DynamicValueOf<TValue>(dynamic parameters, string name)
-        {
-            string value = parameters[name];
-            try
-            {
-                TValue result = parameters[name];
-                return result;
-            }
-            catch (InvalidCastException)
-            {
-                throw new InvalidOperationException(Strings.Format("Parameter: '{0}' value: '{1}' could not be parsed. " +
-                                                                  "Expected type: '{2}' is not supported",
-                                                                  name, value, typeof(TValue)));
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(string.Format("Could not get '{0}' value of '{1}' type dynamicly",
-                    name, typeof(TValue)), e);
-            }
-        }
-
-        private static IDictionary<Type, Func<Parameter, object>> CreateParsers()
-        {
-            var parsers = ImmutableDictionary.CreateBuilder<Type, Func<Parameter, object>>();
-            parsers.Put(typeof(string), value => value.Value);
-            parsers.Put(typeof(bool), SafeParse(bool.Parse));
-            parsers.Put(typeof(bool?), SafeParse(bool.Parse));
-            parsers.Put(typeof(byte), SafeParse(byte.Parse));
-            parsers.Put(typeof(sbyte?), SafeParse(sbyte.Parse));
-            parsers.Put(typeof(short), SafeParse(short.Parse));
-            parsers.Put(typeof(short?), SafeParse(short.Parse));
-            parsers.Put(typeof(ushort), SafeParse(ushort.Parse));
-            parsers.Put(typeof(ushort?), SafeParse(ushort.Parse));
-            parsers.Put(typeof(int), SafeParse(int.Parse));
-            parsers.Put(typeof(int?), SafeParse(int.Parse));
-            parsers.Put(typeof(uint), SafeParse(uint.Parse));
-            parsers.Put(typeof(uint?), SafeParse(uint.Parse));
-            parsers.Put(typeof(long), SafeParse(long.Parse));
-            parsers.Put(typeof(long?), SafeParse(long.Parse));
-            parsers.Put(typeof(ulong), SafeParse(ulong.Parse));
-            parsers.Put(typeof(ulong?), SafeParse(ulong.Parse));
-            parsers.Put(typeof(float), SafeParse(float.Parse));
-            parsers.Put(typeof(float?), SafeParse(float.Parse));
-            parsers.Put(typeof(double), SafeParse(double.Parse));
-            parsers.Put(typeof(double?), SafeParse(double.Parse));
-            parsers.Put(typeof(decimal), SafeParse(decimal.Parse));
-            parsers.Put(typeof(decimal?), SafeParse(decimal.Parse));
-            parsers.Put(typeof(DateTime), SafeParse(DateTime.Parse));
-            parsers.Put(typeof(DateTime?), SafeParse(DateTime.Parse));
-            parsers.Put(typeof(TimeSpan), SafeParse(TimeSpan.Parse));
-            parsers.Put(typeof(TimeSpan?), SafeParse(TimeSpan.Parse));
-            parsers.Put(typeof(ZonedDateTime), SafeParse(ParseZonedDateTime));
-            parsers.Put(typeof(ZonedDateTime?), SafeParse(ParseZonedDateTime));
-            parsers.Put(typeof(LocalDate), SafeParse(ParseLocalDate));
-            parsers.Put(typeof(LocalDate?), SafeParse(ParseLocalDate));
-            parsers.Put(typeof(LocalTime), SafeParse(ParseLocalTime));
-            parsers.Put(typeof(LocalTime?), SafeParse(ParseLocalTime));
-
-            parsers.Put(typeof(IEnumerable<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(ICollection<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(IList<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(List<string>), ListParse(value => value));
-            parsers.Put(typeof(ISet<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(HashSet<string>), SetParse(value => value));
-
-            parsers.Put(typeof(IEnumerable<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(ICollection<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(IList<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(List<bool?>), NullableListParse(bool.Parse));
-            parsers.Put(typeof(ISet<bool?>), NullableImmutableSetParse(bool.Parse));
-            parsers.Put(typeof(HashSet<bool?>), NullableSetParse(bool.Parse));
-
-            parsers.Put(typeof(IEnumerable<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(ICollection<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(IList<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(List<byte>), ListParse(byte.Parse));
-            parsers.Put(typeof(ISet<byte>), ImmutableSetParse(byte.Parse));
-            parsers.Put(typeof(HashSet<byte>), SetParse(byte.Parse));
-
-            parsers.Put(typeof(IEnumerable<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(ICollection<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(IList<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(List<sbyte>), ListParse(sbyte.Parse));
-            parsers.Put(typeof(ISet<sbyte>), ImmutableSetParse(sbyte.Parse));
-            parsers.Put(typeof(HashSet<sbyte>), SetParse(sbyte.Parse));
-
-            parsers.Put(typeof(IEnumerable<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(ICollection<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(IList<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(List<short>), ListParse(short.Parse));
-            parsers.Put(typeof(ISet<short>), ImmutableSetParse(short.Parse));
-            parsers.Put(typeof(HashSet<short>), SetParse(short.Parse));
-
-            parsers.Put(typeof(IEnumerable<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(ICollection<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(IList<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(List<ushort>), ListParse(ushort.Parse));
-            parsers.Put(typeof(ISet<ushort>), ImmutableSetParse(ushort.Parse));
-            parsers.Put(typeof(HashSet<ushort>), SetParse(ushort.Parse));
-
-            parsers.Put(typeof(IEnumerable<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(ICollection<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(IList<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(List<int?>), NullableListParse(int.Parse));
-            parsers.Put(typeof(ISet<int?>), NullableImmutableSetParse(int.Parse));
-            parsers.Put(typeof(HashSet<int?>), NullableSetParse(int.Parse));
-
-            parsers.Put(typeof(IEnumerable<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(ICollection<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(IList<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(List<uint>), ListParse(uint.Parse));
-            parsers.Put(typeof(ISet<uint>), ImmutableSetParse(uint.Parse));
-            parsers.Put(typeof(HashSet<uint>), SetParse(uint.Parse));
-
-            parsers.Put(typeof(IEnumerable<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(ICollection<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(IList<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(List<long?>), NullableListParse(long.Parse));
-            parsers.Put(typeof(ISet<long?>), NullableImmutableSetParse(long.Parse));
-            parsers.Put(typeof(HashSet<long?>), NullableSetParse(long.Parse));
-
-            parsers.Put(typeof(IEnumerable<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(ICollection<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(IList<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(List<ulong>), ListParse(ulong.Parse));
-            parsers.Put(typeof(ISet<ulong>), ImmutableSetParse(ulong.Parse));
-            parsers.Put(typeof(HashSet<ulong>), SetParse(ulong.Parse));
-
-            parsers.Put(typeof(IEnumerable<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(ICollection<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(IList<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(List<float?>), NullableListParse(float.Parse));
-            parsers.Put(typeof(ISet<float?>), NullableImmutableSetParse(float.Parse));
-            parsers.Put(typeof(HashSet<float?>), NullableSetParse(float.Parse));
-
-            parsers.Put(typeof(IEnumerable<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(ICollection<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(IList<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(List<double?>), NullableListParse(double.Parse));
-            parsers.Put(typeof(ISet<double?>), NullableImmutableSetParse(double.Parse));
-            parsers.Put(typeof(HashSet<double?>), NullableSetParse(double.Parse));
-
-            parsers.Put(typeof(IEnumerable<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(ICollection<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(IList<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(List<decimal?>), NullableListParse(decimal.Parse));
-            parsers.Put(typeof(ISet<decimal?>), NullableImmutableSetParse(decimal.Parse));
-            parsers.Put(typeof(HashSet<decimal?>), NullableSetParse(decimal.Parse));
-
-            parsers.Put(typeof(IEnumerable<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(ICollection<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(IList<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(List<DateTime?>), NullableListParse(DateTime.Parse));
-            parsers.Put(typeof(ISet<DateTime?>), NullableImmutableSetParse(DateTime.Parse));
-            parsers.Put(typeof(HashSet<DateTime?>), NullableSetParse(DateTime.Parse));
-
-            parsers.Put(typeof(IEnumerable<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(ICollection<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(IList<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(List<TimeSpan>), ListParse(TimeSpan.Parse));
-            parsers.Put(typeof(ISet<TimeSpan>), ImmutableSetParse(TimeSpan.Parse));
-            parsers.Put(typeof(HashSet<TimeSpan>), SetParse(TimeSpan.Parse));
-
-            return parsers.ToImmutableDictionary();
-        }
-
-        private static Func<Parameter, object> SafeParse<T>(Func<string, T> parse)
-        {
-            return parameter =>
-            {
-                try
-                {
-                    return parse(parameter.Value);
-                }
-                catch (OverflowException)
-                {
-                    throw ParameterOutOfRange(parameter, typeof(T));
-                }
-                catch (FormatException)
-                {
-                    throw InvalidParameterFormat(parameter, typeof(T));
-                }
-                catch (Exception e)
-                {
-                    throw new InvalidOperationException(Strings.Format("Unable to parse parameter: '{0}' with value: '{1}' to {2}",
-                        parameter.Name, parameter.Value, typeof(T)), e);
-                }
-            };
-        }
-
-        private static Func<Parameter, object> NullableListParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ListParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ListParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return new List<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToList();
-            };
-        }
-
-        private static Func<Parameter, object> NullableImmutableListParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ImmutableListParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ImmutableListParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return Lists.EmptyList<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToImmutableList();
-            };
-        }
-
-        private static Func<Parameter, object> NullableSetParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return SetParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> SetParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return new HashSet<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToSet();
-            };
-        }
-
-        private static Func<Parameter, object> NullableImmutableSetParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ImmutableSetParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ImmutableSetParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return Sets.EmptySet<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToImmutableHashSet();
-            };
-        }
-
-        private static ZonedDateTime ParseZonedDateTime(string value)
-        {
-            var dateTime = DateTime.Parse(value);
-            return new ZonedDateTime(Instant.FromDateTimeUtc(dateTime.ToUniversalTime()), DateTimeZone.Utc);
-        }
-
-        private static LocalDate ParseLocalDate(string value)
-        {
-            return LocalDatePattern.IsoPattern.Parse(value).Value;
-        }
-
-        private static LocalTime ParseLocalTime(string value)
-        {
-            return LocalTimePattern.ExtendedIsoPattern.Parse(value).Value;
-        }
-
-        private static ArgumentException ParameterOutOfRange(Parameter parameter, Type type)
-        {
-            return new ArgumentException(Strings.Format("Query: '{0}' value: '{1}' is out of range for: '{2}'",
-                parameter.Name, parameter.Value, type));
-        }
-
-        private static ArgumentException InvalidParameterFormat(Parameter parameter, Type type)
-        {
-            return new ArgumentException(Strings.Format("Query '{0}' value: '{1}' format is invalid for: '{2}'",
-                parameter.Name, parameter.Value, type));
-        }
-
-        private static IEnumerable<T> ParseCollection<T>(string value, Func<string, T> itemParser)
-        {
-            var results = value.Split(new[] { ',' }, StringSplitOptions.None)
-                        .Where(it => it != null)
-                        .Select(it => it.Trim())
-                        .Select(itemParser);
-            return results;
-        }
-
-        public static T? ToNullable<T>(this string s, Func<string, T> itemParser) where T : struct
-        {
-            T? result = new T?();
-            try
-            {
-                if (!string.IsNullOrEmpty(s) && s.Trim().Length > 0)
-                {
-                    result = itemParser(s);
-                }
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(Strings.Format("Unable to parse value: '{0}' to nullable: '{1}'", s, typeof(T).ToString()), e);
-            }
-            return result;
-        }
-
-        private class Parameter
-        {
-            internal string Name { get; private set; }
-            internal string Value { get; private set; }
-
-            private Parameter(string name, string value)
-            {
-                Name = name;
-                Value = value;
-            }
-
-            internal static Parameter Of(string name, string value)
-            {
-                return new Parameter(name, value);
-            }
-        }
-    }
-
-    internal enum ParameterType
-    {
-        Undefined,
-        Query,
-        Path,
-        Header
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/IO.Swagger/packages.config b/samples/server/petstore/nancyfx-async/src/IO.Swagger/packages.config
deleted file mode 100644
index e3401566e5d..00000000000
--- a/samples/server/petstore/nancyfx-async/src/IO.Swagger/packages.config
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-    <package id="Nancy" version="1.4.3" targetFramework="net45" />
-    <package id="NodaTime" version="1.3.1" targetFramework="net45" />
-    <package id="Sharpility" version="1.2.2" targetFramework="net45" />
-    <package id="System.Collections.Immutable" version="1.1.37" targetFramework="net45" />
-</packages>
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/ApiResponse.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/ApiResponse.cs
deleted file mode 100644
index 2c35c0c5fd9..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/ApiResponse.cs
+++ /dev/null
@@ -1,185 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// Describes the result of uploading an image resource
-    /// </summary>
-    public sealed class ApiResponse:  IEquatable<ApiResponse>
-    { 
-        /// <summary>
-        /// Code
-        /// </summary>
-        public int? Code { get; private set; }
-
-        /// <summary>
-        /// Type
-        /// </summary>
-        public string Type { get; private set; }
-
-        /// <summary>
-        /// Message
-        /// </summary>
-        public string Message { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use ApiResponse.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public ApiResponse()
-        {
-        }
-
-        private ApiResponse(int? Code, string Type, string Message)
-        {
-            
-            this.Code = Code;
-            
-            this.Type = Type;
-            
-            this.Message = Message;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of ApiResponse.
-        /// </summary>
-        /// <returns>ApiResponseBuilder</returns>
-        public static ApiResponseBuilder Builder()
-        {
-            return new ApiResponseBuilder();
-        }
-
-        /// <summary>
-        /// Returns ApiResponseBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>ApiResponseBuilder</returns>
-        public ApiResponseBuilder With()
-        {
-            return Builder()
-                .Code(Code)
-                .Type(Type)
-                .Message(Message);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(ApiResponse other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (ApiResponse.
-        /// </summary>
-        /// <param name="left">Compared (ApiResponse</param>
-        /// <param name="right">Compared (ApiResponse</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (ApiResponse left, ApiResponse right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (ApiResponse.
-        /// </summary>
-        /// <param name="left">Compared (ApiResponse</param>
-        /// <param name="right">Compared (ApiResponse</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (ApiResponse left, ApiResponse right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of ApiResponse.
-        /// </summary>
-        public sealed class ApiResponseBuilder
-        {
-            private int? _Code;
-            private string _Type;
-            private string _Message;
-
-            internal ApiResponseBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Code property.
-            /// </summary>
-            /// <param name="value">Code</param>
-            public ApiResponseBuilder Code(int? value)
-            {
-                _Code = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Type property.
-            /// </summary>
-            /// <param name="value">Type</param>
-            public ApiResponseBuilder Type(string value)
-            {
-                _Type = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Message property.
-            /// </summary>
-            /// <param name="value">Message</param>
-            public ApiResponseBuilder Message(string value)
-            {
-                _Message = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of ApiResponse.
-            /// </summary>
-            /// <returns>ApiResponse</returns>
-            public ApiResponse Build()
-            {
-                Validate();
-                return new ApiResponse(
-                    Code: _Code,
-                    Type: _Type,
-                    Message: _Message
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Category.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Category.cs
deleted file mode 100644
index 3cadeec39fe..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Category.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A category for a pet
-    /// </summary>
-    public sealed class Category:  IEquatable<Category>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Category.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Category()
-        {
-        }
-
-        private Category(long? Id, string Name)
-        {
-            
-            this.Id = Id;
-            
-            this.Name = Name;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Category.
-        /// </summary>
-        /// <returns>CategoryBuilder</returns>
-        public static CategoryBuilder Builder()
-        {
-            return new CategoryBuilder();
-        }
-
-        /// <summary>
-        /// Returns CategoryBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>CategoryBuilder</returns>
-        public CategoryBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Name(Name);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Category other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Category.
-        /// </summary>
-        /// <param name="left">Compared (Category</param>
-        /// <param name="right">Compared (Category</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Category left, Category right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Category.
-        /// </summary>
-        /// <param name="left">Compared (Category</param>
-        /// <param name="right">Compared (Category</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Category left, Category right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Category.
-        /// </summary>
-        public sealed class CategoryBuilder
-        {
-            private long? _Id;
-            private string _Name;
-
-            internal CategoryBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Category.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public CategoryBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Category.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public CategoryBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Category.
-            /// </summary>
-            /// <returns>Category</returns>
-            public Category Build()
-            {
-                Validate();
-                return new Category(
-                    Id: _Id,
-                    Name: _Name
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Order.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Order.cs
deleted file mode 100644
index 3ef8e9133c7..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Order.cs
+++ /dev/null
@@ -1,247 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// An order for a pets from the pet store
-    /// </summary>
-    public sealed class Order:  IEquatable<Order>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// PetId
-        /// </summary>
-        public long? PetId { get; private set; }
-
-        /// <summary>
-        /// Quantity
-        /// </summary>
-        public int? Quantity { get; private set; }
-
-        /// <summary>
-        /// ShipDate
-        /// </summary>
-        public DateTime? ShipDate { get; private set; }
-
-        /// <summary>
-        /// Order Status
-        /// </summary>
-        public StatusEnum? Status { get; private set; }
-
-        /// <summary>
-        /// Complete
-        /// </summary>
-        public bool? Complete { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Order.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Order()
-        {
-        }
-
-        private Order(long? Id, long? PetId, int? Quantity, DateTime? ShipDate, StatusEnum? Status, bool? Complete)
-        {
-            
-            this.Id = Id;
-            
-            this.PetId = PetId;
-            
-            this.Quantity = Quantity;
-            
-            this.ShipDate = ShipDate;
-            
-            this.Status = Status;
-            
-            this.Complete = Complete;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Order.
-        /// </summary>
-        /// <returns>OrderBuilder</returns>
-        public static OrderBuilder Builder()
-        {
-            return new OrderBuilder();
-        }
-
-        /// <summary>
-        /// Returns OrderBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>OrderBuilder</returns>
-        public OrderBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .PetId(PetId)
-                .Quantity(Quantity)
-                .ShipDate(ShipDate)
-                .Status(Status)
-                .Complete(Complete);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Order other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Order.
-        /// </summary>
-        /// <param name="left">Compared (Order</param>
-        /// <param name="right">Compared (Order</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Order left, Order right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Order.
-        /// </summary>
-        /// <param name="left">Compared (Order</param>
-        /// <param name="right">Compared (Order</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Order left, Order right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Order.
-        /// </summary>
-        public sealed class OrderBuilder
-        {
-            private long? _Id;
-            private long? _PetId;
-            private int? _Quantity;
-            private DateTime? _ShipDate;
-            private StatusEnum? _Status;
-            private bool? _Complete;
-
-            internal OrderBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-                _Complete = false;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public OrderBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.PetId property.
-            /// </summary>
-            /// <param name="value">PetId</param>
-            public OrderBuilder PetId(long? value)
-            {
-                _PetId = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Quantity property.
-            /// </summary>
-            /// <param name="value">Quantity</param>
-            public OrderBuilder Quantity(int? value)
-            {
-                _Quantity = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.ShipDate property.
-            /// </summary>
-            /// <param name="value">ShipDate</param>
-            public OrderBuilder ShipDate(DateTime? value)
-            {
-                _ShipDate = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Status property.
-            /// </summary>
-            /// <param name="value">Order Status</param>
-            public OrderBuilder Status(StatusEnum? value)
-            {
-                _Status = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Complete property.
-            /// </summary>
-            /// <param name="value">Complete</param>
-            public OrderBuilder Complete(bool? value)
-            {
-                _Complete = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Order.
-            /// </summary>
-            /// <returns>Order</returns>
-            public Order Build()
-            {
-                Validate();
-                return new Order(
-                    Id: _Id,
-                    PetId: _PetId,
-                    Quantity: _Quantity,
-                    ShipDate: _ShipDate,
-                    Status: _Status,
-                    Complete: _Complete
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-        public enum StatusEnum { Placed, Approved, Delivered };
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Pet.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Pet.cs
deleted file mode 100644
index a9e839bb969..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Pet.cs
+++ /dev/null
@@ -1,254 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A pet for sale in the pet store
-    /// </summary>
-    public sealed class Pet:  IEquatable<Pet>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Category
-        /// </summary>
-        public Category Category { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-        /// <summary>
-        /// PhotoUrls
-        /// </summary>
-        public List<string> PhotoUrls { get; private set; }
-
-        /// <summary>
-        /// Tags
-        /// </summary>
-        public List<Tag> Tags { get; private set; }
-
-        /// <summary>
-        /// pet status in the store
-        /// </summary>
-        public StatusEnum? Status { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Pet.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Pet()
-        {
-        }
-
-        private Pet(long? Id, Category Category, string Name, List<string> PhotoUrls, List<Tag> Tags, StatusEnum? Status)
-        {
-            
-            this.Id = Id;
-            
-            this.Category = Category;
-            
-            this.Name = Name;
-            
-            this.PhotoUrls = PhotoUrls;
-            
-            this.Tags = Tags;
-            
-            this.Status = Status;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Pet.
-        /// </summary>
-        /// <returns>PetBuilder</returns>
-        public static PetBuilder Builder()
-        {
-            return new PetBuilder();
-        }
-
-        /// <summary>
-        /// Returns PetBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>PetBuilder</returns>
-        public PetBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Category(Category)
-                .Name(Name)
-                .PhotoUrls(PhotoUrls)
-                .Tags(Tags)
-                .Status(Status);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Pet other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Pet.
-        /// </summary>
-        /// <param name="left">Compared (Pet</param>
-        /// <param name="right">Compared (Pet</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Pet left, Pet right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Pet.
-        /// </summary>
-        /// <param name="left">Compared (Pet</param>
-        /// <param name="right">Compared (Pet</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Pet left, Pet right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Pet.
-        /// </summary>
-        public sealed class PetBuilder
-        {
-            private long? _Id;
-            private Category _Category;
-            private string _Name;
-            private List<string> _PhotoUrls;
-            private List<Tag> _Tags;
-            private StatusEnum? _Status;
-
-            internal PetBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public PetBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Category property.
-            /// </summary>
-            /// <param name="value">Category</param>
-            public PetBuilder Category(Category value)
-            {
-                _Category = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public PetBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.PhotoUrls property.
-            /// </summary>
-            /// <param name="value">PhotoUrls</param>
-            public PetBuilder PhotoUrls(List<string> value)
-            {
-                _PhotoUrls = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Tags property.
-            /// </summary>
-            /// <param name="value">Tags</param>
-            public PetBuilder Tags(List<Tag> value)
-            {
-                _Tags = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Status property.
-            /// </summary>
-            /// <param name="value">pet status in the store</param>
-            public PetBuilder Status(StatusEnum? value)
-            {
-                _Status = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Pet.
-            /// </summary>
-            /// <returns>Pet</returns>
-            public Pet Build()
-            {
-                Validate();
-                return new Pet(
-                    Id: _Id,
-                    Category: _Category,
-                    Name: _Name,
-                    PhotoUrls: _PhotoUrls,
-                    Tags: _Tags,
-                    Status: _Status
-                );
-            }
-
-            private void Validate()
-            { 
-                if (_Name == null)
-                {
-                    throw new ArgumentException("Name is a required property for Pet and cannot be null");
-                } 
-                if (_PhotoUrls == null)
-                {
-                    throw new ArgumentException("PhotoUrls is a required property for Pet and cannot be null");
-                } 
-            }
-        }
-
-        
-        public enum StatusEnum { Available, Pending, Sold };
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Tag.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Tag.cs
deleted file mode 100644
index e46182c334c..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/Tag.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A tag for a pet
-    /// </summary>
-    public sealed class Tag:  IEquatable<Tag>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Tag.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Tag()
-        {
-        }
-
-        private Tag(long? Id, string Name)
-        {
-            
-            this.Id = Id;
-            
-            this.Name = Name;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Tag.
-        /// </summary>
-        /// <returns>TagBuilder</returns>
-        public static TagBuilder Builder()
-        {
-            return new TagBuilder();
-        }
-
-        /// <summary>
-        /// Returns TagBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>TagBuilder</returns>
-        public TagBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Name(Name);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Tag other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Tag.
-        /// </summary>
-        /// <param name="left">Compared (Tag</param>
-        /// <param name="right">Compared (Tag</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Tag left, Tag right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Tag.
-        /// </summary>
-        /// <param name="left">Compared (Tag</param>
-        /// <param name="right">Compared (Tag</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Tag left, Tag right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Tag.
-        /// </summary>
-        public sealed class TagBuilder
-        {
-            private long? _Id;
-            private string _Name;
-
-            internal TagBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Tag.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public TagBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Tag.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public TagBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Tag.
-            /// </summary>
-            /// <returns>Tag</returns>
-            public Tag Build()
-            {
-                Validate();
-                return new Tag(
-                    Id: _Id,
-                    Name: _Name
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/User.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/User.cs
deleted file mode 100644
index 29c94bbfefe..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Models/User.cs
+++ /dev/null
@@ -1,285 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A User who is purchasing from the pet store
-    /// </summary>
-    public sealed class User:  IEquatable<User>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Username
-        /// </summary>
-        public string Username { get; private set; }
-
-        /// <summary>
-        /// FirstName
-        /// </summary>
-        public string FirstName { get; private set; }
-
-        /// <summary>
-        /// LastName
-        /// </summary>
-        public string LastName { get; private set; }
-
-        /// <summary>
-        /// Email
-        /// </summary>
-        public string Email { get; private set; }
-
-        /// <summary>
-        /// Password
-        /// </summary>
-        public string Password { get; private set; }
-
-        /// <summary>
-        /// Phone
-        /// </summary>
-        public string Phone { get; private set; }
-
-        /// <summary>
-        /// User Status
-        /// </summary>
-        public int? UserStatus { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use User.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public User()
-        {
-        }
-
-        private User(long? Id, string Username, string FirstName, string LastName, string Email, string Password, string Phone, int? UserStatus)
-        {
-            
-            this.Id = Id;
-            
-            this.Username = Username;
-            
-            this.FirstName = FirstName;
-            
-            this.LastName = LastName;
-            
-            this.Email = Email;
-            
-            this.Password = Password;
-            
-            this.Phone = Phone;
-            
-            this.UserStatus = UserStatus;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of User.
-        /// </summary>
-        /// <returns>UserBuilder</returns>
-        public static UserBuilder Builder()
-        {
-            return new UserBuilder();
-        }
-
-        /// <summary>
-        /// Returns UserBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>UserBuilder</returns>
-        public UserBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Username(Username)
-                .FirstName(FirstName)
-                .LastName(LastName)
-                .Email(Email)
-                .Password(Password)
-                .Phone(Phone)
-                .UserStatus(UserStatus);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(User other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (User.
-        /// </summary>
-        /// <param name="left">Compared (User</param>
-        /// <param name="right">Compared (User</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (User left, User right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (User.
-        /// </summary>
-        /// <param name="left">Compared (User</param>
-        /// <param name="right">Compared (User</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (User left, User right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of User.
-        /// </summary>
-        public sealed class UserBuilder
-        {
-            private long? _Id;
-            private string _Username;
-            private string _FirstName;
-            private string _LastName;
-            private string _Email;
-            private string _Password;
-            private string _Phone;
-            private int? _UserStatus;
-
-            internal UserBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for User.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public UserBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Username property.
-            /// </summary>
-            /// <param name="value">Username</param>
-            public UserBuilder Username(string value)
-            {
-                _Username = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.FirstName property.
-            /// </summary>
-            /// <param name="value">FirstName</param>
-            public UserBuilder FirstName(string value)
-            {
-                _FirstName = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.LastName property.
-            /// </summary>
-            /// <param name="value">LastName</param>
-            public UserBuilder LastName(string value)
-            {
-                _LastName = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Email property.
-            /// </summary>
-            /// <param name="value">Email</param>
-            public UserBuilder Email(string value)
-            {
-                _Email = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Password property.
-            /// </summary>
-            /// <param name="value">Password</param>
-            public UserBuilder Password(string value)
-            {
-                _Password = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Phone property.
-            /// </summary>
-            /// <param name="value">Phone</param>
-            public UserBuilder Phone(string value)
-            {
-                _Phone = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.UserStatus property.
-            /// </summary>
-            /// <param name="value">User Status</param>
-            public UserBuilder UserStatus(int? value)
-            {
-                _UserStatus = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of User.
-            /// </summary>
-            /// <returns>User</returns>
-            public User Build()
-            {
-                Validate();
-                return new User(
-                    Id: _Id,
-                    Username: _Username,
-                    FirstName: _FirstName,
-                    LastName: _LastName,
-                    Email: _Email,
-                    Password: _Password,
-                    Phone: _Phone,
-                    UserStatus: _UserStatus
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/PetModule.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/PetModule.cs
deleted file mode 100644
index 7ea7c760147..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/PetModule.cs
+++ /dev/null
@@ -1,250 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using Org.OpenAPITools._v2.Models;
-using Org.OpenAPITools._v2.Utils;
-using NodaTime;
-using System.Threading.Tasks;
-
-namespace Org.OpenAPITools._v2.Modules
-{ 
-    /// <summary>
-    /// Status values that need to be considered for filter
-    /// </summary>
-    public enum FindPetsByStatusStatusEnum
-    {
-        available = 1, 
-        pending = 2, 
-        sold = 3
-    };
-
-
-    /// <summary>
-    /// Module processing requests of Pet domain.
-    /// </summary>
-    public sealed class PetModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public PetModule(PetService service) : base("/v2")
-        { 
-            Post["/pet", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<Pet>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'AddPet'");
-                
-                await service.AddPet(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Delete["/pet/{petId}", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var apiKey = Parameters.ValueOf<string>(parameters, Context.Request, "apiKey", ParameterType.Header);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'DeletePet'");
-                
-                await service.DeletePet(Context, petId, apiKey);
-                return new Response { ContentType = ""};
-            };
-
-            Get["/pet/findByStatus", true] = async (parameters, ct) =>
-            {
-                var status = Parameters.ValueOf<FindPetsByStatusStatusEnum?>(parameters, Context.Request, "status", ParameterType.Query);
-                Preconditions.IsNotNull(status, "Required parameter: 'status' is missing at 'FindPetsByStatus'");
-                
-                return await service.FindPetsByStatus(Context, status).ToArray();
-            };
-
-            Get["/pet/findByTags", true] = async (parameters, ct) =>
-            {
-                var tags = Parameters.ValueOf<List<string>>(parameters, Context.Request, "tags", ParameterType.Query);
-                Preconditions.IsNotNull(tags, "Required parameter: 'tags' is missing at 'FindPetsByTags'");
-                
-                return await service.FindPetsByTags(Context, tags).ToArray();
-            };
-
-            Get["/pet/{petId}", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'GetPetById'");
-                
-                return await service.GetPetById(Context, petId);
-            };
-
-            Put["/pet", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<Pet>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'UpdatePet'");
-                
-                await service.UpdatePet(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/pet/{petId}", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var name = Parameters.ValueOf<string>(parameters, Context.Request, "name", ParameterType.Undefined);
-                var status = Parameters.ValueOf<string>(parameters, Context.Request, "status", ParameterType.Undefined);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'UpdatePetWithForm'");
-                
-                await service.UpdatePetWithForm(Context, petId, name, status);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/pet/{petId}/uploadImage", true] = async (parameters, ct) =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var additionalMetadata = Parameters.ValueOf<string>(parameters, Context.Request, "additionalMetadata", ParameterType.Undefined);
-                var file = Parameters.ValueOf<System.IO.Stream>(parameters, Context.Request, "file", ParameterType.Undefined);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'UploadFile'");
-                
-                return await service.UploadFile(Context, petId, additionalMetadata, file);
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling Pet requests.
-    /// </summary>
-    public interface PetService
-    {
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Pet object that needs to be added to the store</param>
-        /// <returns></returns>
-        Task AddPet(NancyContext context, Pet body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">Pet id to delete</param>
-        /// <param name="apiKey"> (optional)</param>
-        /// <returns></returns>
-        Task DeletePet(NancyContext context, long? petId, string apiKey);
-
-        /// <summary>
-        /// Multiple status values can be provided with comma separated strings
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="status">Status values that need to be considered for filter</param>
-        /// <returns>List&lt;Pet&gt;</returns>
-        Task<List<Pet>> FindPetsByStatus(NancyContext context, FindPetsByStatusStatusEnum? status);
-
-        /// <summary>
-        /// Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="tags">Tags to filter by</param>
-        /// <returns>List&lt;Pet&gt;</returns>
-        [Obsolete]
-        Task<List<Pet>> FindPetsByTags(NancyContext context, List<string> tags);
-
-        /// <summary>
-        /// Returns a single pet
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet to return</param>
-        /// <returns>Pet</returns>
-        Task<Pet> GetPetById(NancyContext context, long? petId);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Pet object that needs to be added to the store</param>
-        /// <returns></returns>
-        Task UpdatePet(NancyContext context, Pet body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet that needs to be updated</param>
-        /// <param name="name">Updated name of the pet (optional)</param>
-        /// <param name="status">Updated status of the pet (optional)</param>
-        /// <returns></returns>
-        Task UpdatePetWithForm(NancyContext context, long? petId, string name, string status);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet to update</param>
-        /// <param name="additionalMetadata">Additional data to pass to server (optional)</param>
-        /// <param name="file">file to upload (optional)</param>
-        /// <returns>ApiResponse</returns>
-        Task<ApiResponse> UploadFile(NancyContext context, long? petId, string additionalMetadata, System.IO.Stream file);
-    }
-
-    /// <summary>
-    /// Abstraction of PetService.
-    /// </summary>
-    public abstract class AbstractPetService: PetService
-    {
-        public virtual Task AddPet(NancyContext context, Pet body)
-        {
-            return AddPet(body);
-        }
-
-        public virtual Task DeletePet(NancyContext context, long? petId, string apiKey)
-        {
-            return DeletePet(petId, apiKey);
-        }
-
-        public virtual Task<List<Pet>> FindPetsByStatus(NancyContext context, FindPetsByStatusStatusEnum? status)
-        {
-            return FindPetsByStatus(status);
-        }
-
-        [Obsolete]
-        public virtual Task<List<Pet>> FindPetsByTags(NancyContext context, List<string> tags)
-        {
-            return FindPetsByTags(tags);
-        }
-
-        public virtual Task<Pet> GetPetById(NancyContext context, long? petId)
-        {
-            return GetPetById(petId);
-        }
-
-        public virtual Task UpdatePet(NancyContext context, Pet body)
-        {
-            return UpdatePet(body);
-        }
-
-        public virtual Task UpdatePetWithForm(NancyContext context, long? petId, string name, string status)
-        {
-            return UpdatePetWithForm(petId, name, status);
-        }
-
-        public virtual Task<ApiResponse> UploadFile(NancyContext context, long? petId, string additionalMetadata, System.IO.Stream file)
-        {
-            return UploadFile(petId, additionalMetadata, file);
-        }
-
-        protected abstract Task AddPet(Pet body);
-
-        protected abstract Task DeletePet(long? petId, string apiKey);
-
-        protected abstract Task<List<Pet>> FindPetsByStatus(FindPetsByStatusStatusEnum? status);
-
-        [Obsolete]
-        protected abstract Task<List<Pet>> FindPetsByTags(List<string> tags);
-
-        protected abstract Task<Pet> GetPetById(long? petId);
-
-        protected abstract Task UpdatePet(Pet body);
-
-        protected abstract Task UpdatePetWithForm(long? petId, string name, string status);
-
-        protected abstract Task<ApiResponse> UploadFile(long? petId, string additionalMetadata, System.IO.Stream file);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/StoreModule.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/StoreModule.cs
deleted file mode 100644
index eed0645da35..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/StoreModule.cs
+++ /dev/null
@@ -1,129 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using Org.OpenAPITools._v2.Models;
-using Org.OpenAPITools._v2.Utils;
-using NodaTime;
-using System.Threading.Tasks;
-
-namespace Org.OpenAPITools._v2.Modules
-{ 
-
-    /// <summary>
-    /// Module processing requests of Store domain.
-    /// </summary>
-    public sealed class StoreModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public StoreModule(StoreService service) : base("/v2")
-        { 
-            Delete["/store/order/{orderId}", true] = async (parameters, ct) =>
-            {
-                var orderId = Parameters.ValueOf<string>(parameters, Context.Request, "orderId", ParameterType.Path);
-                Preconditions.IsNotNull(orderId, "Required parameter: 'orderId' is missing at 'DeleteOrder'");
-                
-                await service.DeleteOrder(Context, orderId);
-                return new Response { ContentType = ""};
-            };
-
-            Get["/store/inventory", true] = async (parameters, ct) =>
-            {
-                
-                return await service.GetInventory(Context);
-            };
-
-            Get["/store/order/{orderId}", true] = async (parameters, ct) =>
-            {
-                var orderId = Parameters.ValueOf<long?>(parameters, Context.Request, "orderId", ParameterType.Path);
-                Preconditions.IsNotNull(orderId, "Required parameter: 'orderId' is missing at 'GetOrderById'");
-                
-                return await service.GetOrderById(Context, orderId);
-            };
-
-            Post["/store/order", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<Order>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'PlaceOrder'");
-                
-                return await service.PlaceOrder(Context, body);
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling Store requests.
-    /// </summary>
-    public interface StoreService
-    {
-        /// <summary>
-        /// For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="orderId">ID of the order that needs to be deleted</param>
-        /// <returns></returns>
-        Task DeleteOrder(NancyContext context, string orderId);
-
-        /// <summary>
-        /// Returns a map of status codes to quantities
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <returns>Dictionary&lt;string, int?&gt;</returns>
-        Task<Dictionary<string, int?>> GetInventory(NancyContext context);
-
-        /// <summary>
-        /// For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="orderId">ID of pet that needs to be fetched</param>
-        /// <returns>Order</returns>
-        Task<Order> GetOrderById(NancyContext context, long? orderId);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">order placed for purchasing the pet</param>
-        /// <returns>Order</returns>
-        Task<Order> PlaceOrder(NancyContext context, Order body);
-    }
-
-    /// <summary>
-    /// Abstraction of StoreService.
-    /// </summary>
-    public abstract class AbstractStoreService: StoreService
-    {
-        public virtual Task DeleteOrder(NancyContext context, string orderId)
-        {
-            return DeleteOrder(orderId);
-        }
-
-        public virtual Task<Dictionary<string, int?>> GetInventory(NancyContext context)
-        {
-            return GetInventory();
-        }
-
-        public virtual Task<Order> GetOrderById(NancyContext context, long? orderId)
-        {
-            return GetOrderById(orderId);
-        }
-
-        public virtual Task<Order> PlaceOrder(NancyContext context, Order body)
-        {
-            return PlaceOrder(body);
-        }
-
-        protected abstract Task DeleteOrder(string orderId);
-
-        protected abstract Task<Dictionary<string, int?>> GetInventory();
-
-        protected abstract Task<Order> GetOrderById(long? orderId);
-
-        protected abstract Task<Order> PlaceOrder(Order body);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/UserModule.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/UserModule.cs
deleted file mode 100644
index 23d99c214e4..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Modules/UserModule.cs
+++ /dev/null
@@ -1,234 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using Org.OpenAPITools._v2.Models;
-using Org.OpenAPITools._v2.Utils;
-using NodaTime;
-using System.Threading.Tasks;
-
-namespace Org.OpenAPITools._v2.Modules
-{ 
-
-    /// <summary>
-    /// Module processing requests of User domain.
-    /// </summary>
-    public sealed class UserModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public UserModule(UserService service) : base("/v2")
-        { 
-            Post["/user", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<User>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUser'");
-                
-                await service.CreateUser(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/user/createWithArray", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<List<User>>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUsersWithArrayInput'");
-                
-                await service.CreateUsersWithArrayInput(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/user/createWithList", true] = async (parameters, ct) =>
-            {
-                var body = this.Bind<List<User>>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUsersWithListInput'");
-                
-                await service.CreateUsersWithListInput(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Delete["/user/{username}", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'DeleteUser'");
-                
-                await service.DeleteUser(Context, username);
-                return new Response { ContentType = ""};
-            };
-
-            Get["/user/{username}", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'GetUserByName'");
-                
-                return await service.GetUserByName(Context, username);
-            };
-
-            Get["/user/login", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Query);
-                var password = Parameters.ValueOf<string>(parameters, Context.Request, "password", ParameterType.Query);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'LoginUser'");
-                
-                Preconditions.IsNotNull(password, "Required parameter: 'password' is missing at 'LoginUser'");
-                
-                return await service.LoginUser(Context, username, password);
-            };
-
-            Get["/user/logout", true] = async (parameters, ct) =>
-            {
-                
-                await service.LogoutUser(Context);
-                return new Response { ContentType = ""};
-            };
-
-            Put["/user/{username}", true] = async (parameters, ct) =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                var body = this.Bind<User>();
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'UpdateUser'");
-                
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'UpdateUser'");
-                
-                await service.UpdateUser(Context, username, body);
-                return new Response { ContentType = ""};
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling User requests.
-    /// </summary>
-    public interface UserService
-    {
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Created user object</param>
-        /// <returns></returns>
-        Task CreateUser(NancyContext context, User body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">List of user object</param>
-        /// <returns></returns>
-        Task CreateUsersWithArrayInput(NancyContext context, List<User> body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">List of user object</param>
-        /// <returns></returns>
-        Task CreateUsersWithListInput(NancyContext context, List<User> body);
-
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The name that needs to be deleted</param>
-        /// <returns></returns>
-        Task DeleteUser(NancyContext context, string username);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The name that needs to be fetched. Use user1 for testing.</param>
-        /// <returns>User</returns>
-        Task<User> GetUserByName(NancyContext context, string username);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The user name for login</param>
-        /// <param name="password">The password for login in clear text</param>
-        /// <returns>string</returns>
-        Task<string> LoginUser(NancyContext context, string username, string password);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <returns></returns>
-        Task LogoutUser(NancyContext context);
-
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">name that need to be deleted</param>
-        /// <param name="body">Updated user object</param>
-        /// <returns></returns>
-        Task UpdateUser(NancyContext context, string username, User body);
-    }
-
-    /// <summary>
-    /// Abstraction of UserService.
-    /// </summary>
-    public abstract class AbstractUserService: UserService
-    {
-        public virtual Task CreateUser(NancyContext context, User body)
-        {
-            return CreateUser(body);
-        }
-
-        public virtual Task CreateUsersWithArrayInput(NancyContext context, List<User> body)
-        {
-            return CreateUsersWithArrayInput(body);
-        }
-
-        public virtual Task CreateUsersWithListInput(NancyContext context, List<User> body)
-        {
-            return CreateUsersWithListInput(body);
-        }
-
-        public virtual Task DeleteUser(NancyContext context, string username)
-        {
-            return DeleteUser(username);
-        }
-
-        public virtual Task<User> GetUserByName(NancyContext context, string username)
-        {
-            return GetUserByName(username);
-        }
-
-        public virtual Task<string> LoginUser(NancyContext context, string username, string password)
-        {
-            return LoginUser(username, password);
-        }
-
-        public virtual Task LogoutUser(NancyContext context)
-        {
-            return LogoutUser();
-        }
-
-        public virtual Task UpdateUser(NancyContext context, string username, User body)
-        {
-            return UpdateUser(username, body);
-        }
-
-        protected abstract Task CreateUser(User body);
-
-        protected abstract Task CreateUsersWithArrayInput(List<User> body);
-
-        protected abstract Task CreateUsersWithListInput(List<User> body);
-
-        protected abstract Task DeleteUser(string username);
-
-        protected abstract Task<User> GetUserByName(string username);
-
-        protected abstract Task<string> LoginUser(string username, string password);
-
-        protected abstract Task LogoutUser();
-
-        protected abstract Task UpdateUser(string username, User body);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Org.OpenAPITools.csproj
deleted file mode 100644
index b26666605cd..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ /dev/null
@@ -1,66 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <PropertyGroup>
-        <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-        <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-        <ProjectGuid>{768B8DC6-54EE-4D40-9B20-7857E1D742A4}</ProjectGuid>
-        <OutputType>Library</OutputType>
-        <AppDesignerFolder>Properties</AppDesignerFolder>
-        <RootNamespace>Org.OpenAPITools._v2</RootNamespace>
-        <AssemblyName>Org.OpenAPITools</AssemblyName>
-            <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-        <FileAlignment>512</FileAlignment>
-    </PropertyGroup>
-    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-        <DebugSymbols>true</DebugSymbols>
-        <DebugType>full</DebugType>
-        <Optimize>false</Optimize>
-        <OutputPath>bin\Debug\</OutputPath>
-        <DefineConstants>DEBUG;TRACE</DefineConstants>
-        <ErrorReport>prompt</ErrorReport>
-        <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Debug\Org.OpenAPITools.XML</DocumentationFile>
-    </PropertyGroup>
-    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-        <DebugType>pdbonly</DebugType>
-        <Optimize>true</Optimize>
-        <OutputPath>bin\Release\</OutputPath>
-        <DefineConstants>TRACE</DefineConstants>
-        <ErrorReport>prompt</ErrorReport>
-        <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Release\Org.OpenAPITools.XML</DocumentationFile>
-    </PropertyGroup>
-    <ItemGroup>
-        <Reference Include="Nancy, Version=1.4.2.0, Culture=neutral, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\Nancy.1.4.3\lib\net40\Nancy.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="NodaTime, Version=1.3.0.0, Culture=neutral, PublicKeyToken=4226afe0d9b296d1, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\NodaTime.1.3.1\lib\net35-Client\NodaTime.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="Sharpility, Version=1.2.2.0, Culture=neutral, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\Sharpility.1.2.2\lib\net45\Sharpility.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="System.Collections.Immutable, Version=1.1.37.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\System.Collections.Immutable.1.1.37\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-            <Private>True</Private>
-        </Reference>        <Reference Include="System"/>
-        <Reference Include="System.Core"/>
-        <Reference Include="System.Xml.Linq"/>
-        <Reference Include="System.Data.DataSetExtensions"/>
-        <Reference Include="Microsoft.CSharp"/>
-        <Reference Include="System.Data"/>
-        <Reference Include="System.Runtime.Serialization"/>
-        <Reference Include="System.Xml"/>
-    </ItemGroup>
-    <ItemGroup>
-        <Compile Include="**\*.cs" Exclude="obj\**"/>
-    </ItemGroup>
-    <ItemGroup>
-        <Content Include="packages.config"/>
-    </ItemGroup>
-    <Import Project="$(MsBuildToolsPath)\Microsoft.CSharp.targets"/>
-</Project>
-
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Org.OpenAPITools.nuspec b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Org.OpenAPITools.nuspec
deleted file mode 100644
index d4ee2fc102a..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Org.OpenAPITools.nuspec
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0"?>
-<package>
-    <metadata>
-        <id>Org.OpenAPITools</id>
-        <title>Org.OpenAPITools</title>
-        <version>1.0.0</version>
-        <authors>openapi-generator</authors>
-        <owners>openapi-generator</owners>
-        <requireLicenseAcceptance>false</requireLicenseAcceptance>
-        <description>NancyFx Org.OpenAPITools API</description>
-        <licenseUrl>https://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>
-    </metadata>
-</package>
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Utils/LocalDateConverter.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Utils/LocalDateConverter.cs
deleted file mode 100644
index dd90cbf5133..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Utils/LocalDateConverter.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using Nancy.Bootstrapper;
-using Nancy.Json;
-using NodaTime;
-using NodaTime.Text;
-using System;
-using System.Collections.Generic;
-
-namespace Org.OpenAPITools._v2.Utils
-{
-    /// <summary>
-    /// (De)serializes a <see cref="NodaTime.LocalDate"/> to a string using 
-    /// the <a href="https://xml2rfc.tools.ietf.org/public/rfc/html/rfc3339.html#anchor14">RFC3339</a> 
-    /// <code>full-date</code> format.
-    /// </summary>
-    public class LocalDateConverter : JavaScriptPrimitiveConverter, IApplicationStartup
-    {
-        public override IEnumerable<Type> SupportedTypes
-        {
-            get
-            {
-                yield return typeof(LocalDate);
-                yield return typeof(LocalDate?);
-            }
-        }
-
-        public void Initialize(IPipelines pipelines)
-        {
-            JsonSettings.PrimitiveConverters.Add(new LocalDateConverter());
-        }
-
-
-        public override object Serialize(object obj, JavaScriptSerializer serializer)
-        {
-            if (obj is LocalDate)
-            {
-                LocalDate localDate = (LocalDate)obj;
-                return LocalDatePattern.IsoPattern.Format(localDate);
-            }
-            return null;
-        }
-
-        public override object Deserialize(object primitiveValue, Type type, JavaScriptSerializer serializer)
-        {
-            if ((type == typeof(LocalDate) || type == typeof(LocalDate?)) && primitiveValue is string)
-            {
-                try
-                {
-                    return LocalDatePattern.IsoPattern.Parse(primitiveValue as string).GetValueOrThrow();
-                }
-                catch { }
-            }
-            return null;
-        }
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Utils/Parameters.cs b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Utils/Parameters.cs
deleted file mode 100644
index 847527a2dbb..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/Utils/Parameters.cs
+++ /dev/null
@@ -1,450 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.Immutable;
-using System.Linq;
-using Nancy;
-using NodaTime;
-using NodaTime.Text;
-using Sharpility.Base;
-using Sharpility.Extensions;
-using Sharpility.Util;
-
-namespace Org.OpenAPITools._v2.Utils
-{
-    internal static class Parameters
-    {
-        private static readonly IDictionary<Type, Func<Parameter, object>> Parsers = CreateParsers();
-
-        internal static TValue ValueOf<TValue>(dynamic parameters, Request request, string name, ParameterType parameterType)
-        {
-            var valueType = typeof(TValue);
-            var valueUnderlyingType = Nullable.GetUnderlyingType(valueType);
-            var isNullable = default(TValue) == null;
-            string value = RawValueOf(parameters, request, name, parameterType);
-            Preconditions.Evaluate(!string.IsNullOrEmpty(value) || isNullable, string.Format("Required parameter: '{0}' is missing", name));
-            if (value == null && isNullable)
-            {
-                return default(TValue);
-            }
-            if (valueType.IsEnum || (valueUnderlyingType != null && valueUnderlyingType.IsEnum))
-            {
-                return EnumValueOf<TValue>(name, value);
-            }
-            return ValueOf<TValue>(parameters, name, value, valueType, request, parameterType);
-        }
-
-        private static string RawValueOf(dynamic parameters, Request request, string name, ParameterType parameterType)
-        {
-            try
-            {
-                switch (parameterType)
-                {
-                    case ParameterType.Query:
-                        string querValue = request.Query[name];
-                        return querValue;
-                    case ParameterType.Path:
-                        string pathValue = parameters[name];
-                        return pathValue;
-                    case ParameterType.Header:
-                        var headerValue = request.Headers[name];
-                        return headerValue != null ? string.Join(",", headerValue) : null;
-                }
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(string.Format("Could not obtain value of '{0}' parameter", name), e);
-            }
-            throw new InvalidOperationException(string.Format("Parameter with type: {0} is not supported", parameterType));
-        }
-
-        private static TValue EnumValueOf<TValue>(string name, string value)
-        {
-            var valueType = typeof(TValue);
-            var enumType = valueType.IsEnum ? valueType : Nullable.GetUnderlyingType(valueType);
-            Preconditions.IsNotNull(enumType, () => new InvalidOperationException(
-                string.Format("Could not parse parameter: '{0}' to enum. Type {1} is not enum", name, valueType)));
-            var values = Enum.GetValues(enumType);
-            foreach (var entry in values)
-            {
-                if (entry.ToString().EqualsIgnoreCases(value)
-                    || ((int)entry).ToString().EqualsIgnoreCases(value))
-                {
-                    return (TValue)entry;
-                }
-            }
-            throw new ArgumentException(string.Format("Parameter: '{0}' value: '{1}' is not supported. Expected one of: {2}",
-                    name, value, Strings.ToString(values)));
-        }
-
-        private static TValue ValueOf<TValue>(dynamic parameters, string name, string value, Type valueType, Request request, ParameterType parameterType)
-        {
-            var parser = Parsers.GetIfPresent(valueType);
-            if (parser != null)
-            {
-                return ParseValueUsing<TValue>(name, value, valueType, parser);
-            }
-            if (parameterType == ParameterType.Path)
-            {
-                return DynamicValueOf<TValue>(parameters, name);
-            }
-            if (parameterType == ParameterType.Query)
-            {
-                return DynamicValueOf<TValue>(request.Query, name);
-            }
-            throw new InvalidOperationException(string.Format("Could not get value for {0} with type {1}", name, valueType));
-        }
-
-        private static TValue ParseValueUsing<TValue>(string name, string value, Type valueType, Func<Parameter, object> parser)
-        {
-            var result = parser(Parameter.Of(name, value));
-            try
-            {
-                return (TValue)result;
-            }
-            catch (InvalidCastException)
-            {
-                throw new InvalidOperationException(
-                    string.Format("Could not parse parameter: '{0}' with value: '{1}'. " +
-                                  "Received: '{2}', expected: '{3}'.",
-                                  name, value, result.GetType(), valueType));
-            }
-        }
-
-        private static TValue DynamicValueOf<TValue>(dynamic parameters, string name)
-        {
-            string value = parameters[name];
-            try
-            {
-                TValue result = parameters[name];
-                return result;
-            }
-            catch (InvalidCastException)
-            {
-                throw new InvalidOperationException(Strings.Format("Parameter: '{0}' value: '{1}' could not be parsed. " +
-                                                                  "Expected type: '{2}' is not supported",
-                                                                  name, value, typeof(TValue)));
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(string.Format("Could not get '{0}' value of '{1}' type dynamicly",
-                    name, typeof(TValue)), e);
-            }
-        }
-
-        private static IDictionary<Type, Func<Parameter, object>> CreateParsers()
-        {
-            var parsers = ImmutableDictionary.CreateBuilder<Type, Func<Parameter, object>>();
-            parsers.Put(typeof(string), value => value.Value);
-            parsers.Put(typeof(bool), SafeParse(bool.Parse));
-            parsers.Put(typeof(bool?), SafeParse(bool.Parse));
-            parsers.Put(typeof(byte), SafeParse(byte.Parse));
-            parsers.Put(typeof(sbyte?), SafeParse(sbyte.Parse));
-            parsers.Put(typeof(short), SafeParse(short.Parse));
-            parsers.Put(typeof(short?), SafeParse(short.Parse));
-            parsers.Put(typeof(ushort), SafeParse(ushort.Parse));
-            parsers.Put(typeof(ushort?), SafeParse(ushort.Parse));
-            parsers.Put(typeof(int), SafeParse(int.Parse));
-            parsers.Put(typeof(int?), SafeParse(int.Parse));
-            parsers.Put(typeof(uint), SafeParse(uint.Parse));
-            parsers.Put(typeof(uint?), SafeParse(uint.Parse));
-            parsers.Put(typeof(long), SafeParse(long.Parse));
-            parsers.Put(typeof(long?), SafeParse(long.Parse));
-            parsers.Put(typeof(ulong), SafeParse(ulong.Parse));
-            parsers.Put(typeof(ulong?), SafeParse(ulong.Parse));
-            parsers.Put(typeof(float), SafeParse(float.Parse));
-            parsers.Put(typeof(float?), SafeParse(float.Parse));
-            parsers.Put(typeof(double), SafeParse(double.Parse));
-            parsers.Put(typeof(double?), SafeParse(double.Parse));
-            parsers.Put(typeof(decimal), SafeParse(decimal.Parse));
-            parsers.Put(typeof(decimal?), SafeParse(decimal.Parse));
-            parsers.Put(typeof(DateTime), SafeParse(DateTime.Parse));
-            parsers.Put(typeof(DateTime?), SafeParse(DateTime.Parse));
-            parsers.Put(typeof(TimeSpan), SafeParse(TimeSpan.Parse));
-            parsers.Put(typeof(TimeSpan?), SafeParse(TimeSpan.Parse));
-            parsers.Put(typeof(ZonedDateTime), SafeParse(ParseZonedDateTime));
-            parsers.Put(typeof(ZonedDateTime?), SafeParse(ParseZonedDateTime));
-            parsers.Put(typeof(LocalDate), SafeParse(ParseLocalDate));
-            parsers.Put(typeof(LocalDate?), SafeParse(ParseLocalDate));
-            parsers.Put(typeof(LocalTime), SafeParse(ParseLocalTime));
-            parsers.Put(typeof(LocalTime?), SafeParse(ParseLocalTime));
-
-            parsers.Put(typeof(IEnumerable<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(ICollection<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(IList<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(List<string>), ListParse(value => value));
-            parsers.Put(typeof(ISet<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(HashSet<string>), SetParse(value => value));
-
-            parsers.Put(typeof(IEnumerable<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(ICollection<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(IList<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(List<bool?>), NullableListParse(bool.Parse));
-            parsers.Put(typeof(ISet<bool?>), NullableImmutableSetParse(bool.Parse));
-            parsers.Put(typeof(HashSet<bool?>), NullableSetParse(bool.Parse));
-
-            parsers.Put(typeof(IEnumerable<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(ICollection<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(IList<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(List<byte>), ListParse(byte.Parse));
-            parsers.Put(typeof(ISet<byte>), ImmutableSetParse(byte.Parse));
-            parsers.Put(typeof(HashSet<byte>), SetParse(byte.Parse));
-
-            parsers.Put(typeof(IEnumerable<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(ICollection<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(IList<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(List<sbyte>), ListParse(sbyte.Parse));
-            parsers.Put(typeof(ISet<sbyte>), ImmutableSetParse(sbyte.Parse));
-            parsers.Put(typeof(HashSet<sbyte>), SetParse(sbyte.Parse));
-
-            parsers.Put(typeof(IEnumerable<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(ICollection<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(IList<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(List<short>), ListParse(short.Parse));
-            parsers.Put(typeof(ISet<short>), ImmutableSetParse(short.Parse));
-            parsers.Put(typeof(HashSet<short>), SetParse(short.Parse));
-
-            parsers.Put(typeof(IEnumerable<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(ICollection<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(IList<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(List<ushort>), ListParse(ushort.Parse));
-            parsers.Put(typeof(ISet<ushort>), ImmutableSetParse(ushort.Parse));
-            parsers.Put(typeof(HashSet<ushort>), SetParse(ushort.Parse));
-
-            parsers.Put(typeof(IEnumerable<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(ICollection<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(IList<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(List<int?>), NullableListParse(int.Parse));
-            parsers.Put(typeof(ISet<int?>), NullableImmutableSetParse(int.Parse));
-            parsers.Put(typeof(HashSet<int?>), NullableSetParse(int.Parse));
-
-            parsers.Put(typeof(IEnumerable<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(ICollection<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(IList<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(List<uint>), ListParse(uint.Parse));
-            parsers.Put(typeof(ISet<uint>), ImmutableSetParse(uint.Parse));
-            parsers.Put(typeof(HashSet<uint>), SetParse(uint.Parse));
-
-            parsers.Put(typeof(IEnumerable<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(ICollection<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(IList<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(List<long?>), NullableListParse(long.Parse));
-            parsers.Put(typeof(ISet<long?>), NullableImmutableSetParse(long.Parse));
-            parsers.Put(typeof(HashSet<long?>), NullableSetParse(long.Parse));
-
-            parsers.Put(typeof(IEnumerable<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(ICollection<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(IList<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(List<ulong>), ListParse(ulong.Parse));
-            parsers.Put(typeof(ISet<ulong>), ImmutableSetParse(ulong.Parse));
-            parsers.Put(typeof(HashSet<ulong>), SetParse(ulong.Parse));
-
-            parsers.Put(typeof(IEnumerable<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(ICollection<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(IList<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(List<float?>), NullableListParse(float.Parse));
-            parsers.Put(typeof(ISet<float?>), NullableImmutableSetParse(float.Parse));
-            parsers.Put(typeof(HashSet<float?>), NullableSetParse(float.Parse));
-
-            parsers.Put(typeof(IEnumerable<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(ICollection<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(IList<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(List<double?>), NullableListParse(double.Parse));
-            parsers.Put(typeof(ISet<double?>), NullableImmutableSetParse(double.Parse));
-            parsers.Put(typeof(HashSet<double?>), NullableSetParse(double.Parse));
-
-            parsers.Put(typeof(IEnumerable<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(ICollection<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(IList<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(List<decimal?>), NullableListParse(decimal.Parse));
-            parsers.Put(typeof(ISet<decimal?>), NullableImmutableSetParse(decimal.Parse));
-            parsers.Put(typeof(HashSet<decimal?>), NullableSetParse(decimal.Parse));
-
-            parsers.Put(typeof(IEnumerable<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(ICollection<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(IList<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(List<DateTime?>), NullableListParse(DateTime.Parse));
-            parsers.Put(typeof(ISet<DateTime?>), NullableImmutableSetParse(DateTime.Parse));
-            parsers.Put(typeof(HashSet<DateTime?>), NullableSetParse(DateTime.Parse));
-
-            parsers.Put(typeof(IEnumerable<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(ICollection<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(IList<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(List<TimeSpan>), ListParse(TimeSpan.Parse));
-            parsers.Put(typeof(ISet<TimeSpan>), ImmutableSetParse(TimeSpan.Parse));
-            parsers.Put(typeof(HashSet<TimeSpan>), SetParse(TimeSpan.Parse));
-
-            return parsers.ToImmutableDictionary();
-        }
-
-        private static Func<Parameter, object> SafeParse<T>(Func<string, T> parse)
-        {
-            return parameter =>
-            {
-                try
-                {
-                    return parse(parameter.Value);
-                }
-                catch (OverflowException)
-                {
-                    throw ParameterOutOfRange(parameter, typeof(T));
-                }
-                catch (FormatException)
-                {
-                    throw InvalidParameterFormat(parameter, typeof(T));
-                }
-                catch (Exception e)
-                {
-                    throw new InvalidOperationException(Strings.Format("Unable to parse parameter: '{0}' with value: '{1}' to {2}",
-                        parameter.Name, parameter.Value, typeof(T)), e);
-                }
-            };
-        }
-
-        private static Func<Parameter, object> NullableListParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ListParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ListParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return new List<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToList();
-            };
-        }
-
-        private static Func<Parameter, object> NullableImmutableListParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ImmutableListParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ImmutableListParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return Lists.EmptyList<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToImmutableList();
-            };
-        }
-
-        private static Func<Parameter, object> NullableSetParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return SetParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> SetParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return new HashSet<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToSet();
-            };
-        }
-
-        private static Func<Parameter, object> NullableImmutableSetParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ImmutableSetParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ImmutableSetParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return Sets.EmptySet<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToImmutableHashSet();
-            };
-        }
-
-        private static ZonedDateTime ParseZonedDateTime(string value)
-        {
-            var dateTime = DateTime.Parse(value);
-            return new ZonedDateTime(Instant.FromDateTimeUtc(dateTime.ToUniversalTime()), DateTimeZone.Utc);
-        }
-
-        private static LocalDate ParseLocalDate(string value)
-        {
-            return LocalDatePattern.IsoPattern.Parse(value).Value;
-        }
-
-        private static LocalTime ParseLocalTime(string value)
-        {
-            return LocalTimePattern.ExtendedIsoPattern.Parse(value).Value;
-        }
-
-        private static ArgumentException ParameterOutOfRange(Parameter parameter, Type type)
-        {
-            return new ArgumentException(Strings.Format("Query: '{0}' value: '{1}' is out of range for: '{2}'",
-                parameter.Name, parameter.Value, type));
-        }
-
-        private static ArgumentException InvalidParameterFormat(Parameter parameter, Type type)
-        {
-            return new ArgumentException(Strings.Format("Query '{0}' value: '{1}' format is invalid for: '{2}'",
-                parameter.Name, parameter.Value, type));
-        }
-
-        private static IEnumerable<T> ParseCollection<T>(string value, Func<string, T> itemParser)
-        {
-            var results = value.Split(new[] { ',' }, StringSplitOptions.None)
-                        .Where(it => it != null)
-                        .Select(it => it.Trim())
-                        .Select(itemParser);
-            return results;
-        }
-
-        public static T? ToNullable<T>(this string s, Func<string, T> itemParser) where T : struct
-        {
-            T? result = new T?();
-            try
-            {
-                if (!string.IsNullOrEmpty(s) && s.Trim().Length > 0)
-                {
-                    result = itemParser(s);
-                }
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(Strings.Format("Unable to parse value: '{0}' to nullable: '{1}'", s, typeof(T).ToString()), e);
-            }
-            return result;
-        }
-
-        private class Parameter
-        {
-            internal string Name { get; private set; }
-            internal string Value { get; private set; }
-
-            private Parameter(string name, string value)
-            {
-                Name = name;
-                Value = value;
-            }
-
-            internal static Parameter Of(string name, string value)
-            {
-                return new Parameter(name, value);
-            }
-        }
-    }
-
-    internal enum ParameterType
-    {
-        Undefined,
-        Query,
-        Path,
-        Header
-    }
-}
diff --git a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/packages.config b/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/packages.config
deleted file mode 100644
index e3401566e5d..00000000000
--- a/samples/server/petstore/nancyfx-async/src/Org.OpenAPITools/packages.config
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-    <package id="Nancy" version="1.4.3" targetFramework="net45" />
-    <package id="NodaTime" version="1.3.1" targetFramework="net45" />
-    <package id="Sharpility" version="1.2.2" targetFramework="net45" />
-    <package id="System.Collections.Immutable" version="1.1.37" targetFramework="net45" />
-</packages>
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx/.gitignore b/samples/server/petstore/nancyfx/.gitignore
deleted file mode 100644
index 1ee53850b84..00000000000
--- a/samples/server/petstore/nancyfx/.gitignore
+++ /dev/null
@@ -1,362 +0,0 @@
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-##
-## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
-
-# User-specific files
-*.rsuser
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
-*.userprefs
-
-# Mono auto generated files
-mono_crash.*
-
-# Build results
-[Dd]ebug/
-[Dd]ebugPublic/
-[Rr]elease/
-[Rr]eleases/
-x64/
-x86/
-[Ww][Ii][Nn]32/
-[Aa][Rr][Mm]/
-[Aa][Rr][Mm]64/
-bld/
-[Bb]in/
-[Oo]bj/
-[Ll]og/
-[Ll]ogs/
-
-# Visual Studio 2015/2017 cache/options directory
-.vs/
-# Uncomment if you have tasks that create the project's static files in wwwroot
-#wwwroot/
-
-# Visual Studio 2017 auto generated files
-Generated\ Files/
-
-# MSTest test Results
-[Tt]est[Rr]esult*/
-[Bb]uild[Ll]og.*
-
-# NUnit
-*.VisualState.xml
-TestResult.xml
-nunit-*.xml
-
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
-# Benchmark Results
-BenchmarkDotNet.Artifacts/
-
-# .NET Core
-project.lock.json
-project.fragment.lock.json
-artifacts/
-
-# ASP.NET Scaffolding
-ScaffoldingReadMe.txt
-
-# StyleCop
-StyleCopReport.xml
-
-# Files built by Visual Studio
-*_i.c
-*_p.c
-*_h.h
-*.ilk
-*.meta
-*.obj
-*.iobj
-*.pch
-*.pdb
-*.ipdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.tmp_proj
-*_wpftmp.csproj
-*.log
-*.vspscc
-*.vssscc
-.builds
-*.pidb
-*.svclog
-*.scc
-
-# Chutzpah Test files
-_Chutzpah*
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opendb
-*.opensdf
-*.sdf
-*.cachefile
-*.VC.db
-*.VC.VC.opendb
-
-# Visual Studio profiler
-*.psess
-*.vsp
-*.vspx
-*.sap
-
-# Visual Studio Trace Files
-*.e2e
-
-# TFS 2012 Local Workspace
-$tf/
-
-# Guidance Automation Toolkit
-*.gpState
-
-# ReSharper is a .NET coding add-in
-_ReSharper*/
-*.[Rr]e[Ss]harper
-*.DotSettings.user
-
-# TeamCity is a build add-in
-_TeamCity*
-
-# DotCover is a Code Coverage Tool
-*.dotCover
-
-# AxoCover is a Code Coverage Tool
-.axoCover/*
-!.axoCover/settings.json
-
-# Coverlet is a free, cross platform Code Coverage Tool
-coverage*.json
-coverage*.xml
-coverage*.info
-
-# Visual Studio code coverage results
-*.coverage
-*.coveragexml
-
-# NCrunch
-_NCrunch_*
-.*crunch*.local.xml
-nCrunchTemp_*
-
-# MightyMoose
-*.mm.*
-AutoTest.Net/
-
-# Web workbench (sass)
-.sass-cache/
-
-# Installshield output folder
-[Ee]xpress/
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish/
-
-# Publish Web Output
-*.[Pp]ublish.xml
-*.azurePubxml
-# Note: Comment the next line if you want to checkin your web deploy settings,
-# but database connection strings (with potential passwords) will be unencrypted
-*.pubxml
-*.publishproj
-
-# Microsoft Azure Web App publish settings. Comment the next line if you want to
-# checkin your Azure Web App publish settings, but sensitive information contained
-# in these scripts will be unencrypted
-PublishScripts/
-
-# NuGet Packages
-*.nupkg
-# NuGet Symbol Packages
-*.snupkg
-# The packages folder can be ignored because of Package Restore
-**/[Pp]ackages/*
-# except build/, which is used as an MSBuild target.
-!**/[Pp]ackages/build/
-# Uncomment if necessary however generally it will be regenerated when needed
-#!**/[Pp]ackages/repositories.config
-# NuGet v3's project.json files produces more ignorable files
-*.nuget.props
-*.nuget.targets
-
-# Microsoft Azure Build Output
-csx/
-*.build.csdef
-
-# Microsoft Azure Emulator
-ecf/
-rcf/
-
-# Windows Store app package directories and files
-AppPackages/
-BundleArtifacts/
-Package.StoreAssociation.xml
-_pkginfo.txt
-*.appx
-*.appxbundle
-*.appxupload
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!?*.[Cc]ache/
-
-# Others
-ClientBin/
-~$*
-*~
-*.dbmdl
-*.dbproj.schemaview
-*.jfm
-*.pfx
-*.publishsettings
-orleans.codegen.cs
-
-# Including strong name files can present a security risk
-# (https://github.com/github/gitignore/pull/2483#issue-259490424)
-#*.snk
-
-# Since there are multiple workflows, uncomment next line to ignore bower_components
-# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
-#bower_components/
-
-# RIA/Silverlight projects
-Generated_Code/
-
-# Backup & report files from converting an old project file
-# to a newer Visual Studio version. Backup files are not needed,
-# because we have git ;-)
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-UpgradeLog*.htm
-ServiceFabricBackup/
-*.rptproj.bak
-
-# SQL Server files
-*.mdf
-*.ldf
-*.ndf
-
-# Business Intelligence projects
-*.rdl.data
-*.bim.layout
-*.bim_*.settings
-*.rptproj.rsuser
-*- [Bb]ackup.rdl
-*- [Bb]ackup ([0-9]).rdl
-*- [Bb]ackup ([0-9][0-9]).rdl
-
-# Microsoft Fakes
-FakesAssemblies/
-
-# GhostDoc plugin setting file
-*.GhostDoc.xml
-
-# Node.js Tools for Visual Studio
-.ntvs_analysis.dat
-node_modules/
-
-# Visual Studio 6 build log
-*.plg
-
-# Visual Studio 6 workspace options file
-*.opt
-
-# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
-*.vbw
-
-# Visual Studio LightSwitch build output
-**/*.HTMLClient/GeneratedArtifacts
-**/*.DesktopClient/GeneratedArtifacts
-**/*.DesktopClient/ModelManifest.xml
-**/*.Server/GeneratedArtifacts
-**/*.Server/ModelManifest.xml
-_Pvt_Extensions
-
-# Paket dependency manager
-.paket/paket.exe
-paket-files/
-
-# FAKE - F# Make
-.fake/
-
-# CodeRush personal settings
-.cr/personal
-
-# Python Tools for Visual Studio (PTVS)
-__pycache__/
-*.pyc
-
-# Cake - Uncomment if you are using it
-# tools/**
-# !tools/packages.config
-
-# Tabs Studio
-*.tss
-
-# Telerik's JustMock configuration file
-*.jmconfig
-
-# BizTalk build output
-*.btp.cs
-*.btm.cs
-*.odx.cs
-*.xsd.cs
-
-# OpenCover UI analysis results
-OpenCover/
-
-# Azure Stream Analytics local run output
-ASALocalRun/
-
-# MSBuild Binary and Structured Log
-*.binlog
-
-# NVidia Nsight GPU debugger configuration file
-*.nvuser
-
-# MFractors (Xamarin productivity tool) working folder
-.mfractor/
-
-# Local History for Visual Studio
-.localhistory/
-
-# BeatPulse healthcheck temp database
-healthchecksdb
-
-# Backup folder for Package Reference Convert tool in Visual Studio 2017
-MigrationBackup/
-
-# Ionide (cross platform F# VS Code tools) working folder
-.ionide/
-
-# Fody - auto-generated XML schema
-FodyWeavers.xsd
diff --git a/samples/server/petstore/nancyfx/.openapi-generator/FILES b/samples/server/petstore/nancyfx/.openapi-generator/FILES
deleted file mode 100644
index eabec10a061..00000000000
--- a/samples/server/petstore/nancyfx/.openapi-generator/FILES
+++ /dev/null
@@ -1,16 +0,0 @@
-.gitignore
-Org.OpenAPITools.sln
-src/Org.OpenAPITools/Models/ApiResponse.cs
-src/Org.OpenAPITools/Models/Category.cs
-src/Org.OpenAPITools/Models/Order.cs
-src/Org.OpenAPITools/Models/Pet.cs
-src/Org.OpenAPITools/Models/Tag.cs
-src/Org.OpenAPITools/Models/User.cs
-src/Org.OpenAPITools/Modules/PetModule.cs
-src/Org.OpenAPITools/Modules/StoreModule.cs
-src/Org.OpenAPITools/Modules/UserModule.cs
-src/Org.OpenAPITools/Org.OpenAPITools.csproj
-src/Org.OpenAPITools/Org.OpenAPITools.nuspec
-src/Org.OpenAPITools/Utils/LocalDateConverter.cs
-src/Org.OpenAPITools/Utils/Parameters.cs
-src/Org.OpenAPITools/packages.config
diff --git a/samples/server/petstore/nancyfx/.openapi-generator/VERSION b/samples/server/petstore/nancyfx/.openapi-generator/VERSION
deleted file mode 100644
index d99e7162d01..00000000000
--- a/samples/server/petstore/nancyfx/.openapi-generator/VERSION
+++ /dev/null
@@ -1 +0,0 @@
-5.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx/Org.OpenAPITools.sln b/samples/server/petstore/nancyfx/Org.OpenAPITools.sln
deleted file mode 100644
index 757078a1383..00000000000
--- a/samples/server/petstore/nancyfx/Org.OpenAPITools.sln
+++ /dev/null
@@ -1,25 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-VisualStudioVersion = 12.0.0.0
-MinimumVisualStudioVersion = 10.0.0.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Org.OpenAPITools", "src\Org.OpenAPITools\Org.OpenAPITools.csproj", "{768B8DC6-54EE-4D40-9B20-7857E1D742A4}"
-EndProject
-Global
-GlobalSection(SolutionConfigurationPlatforms) = preSolution
-Debug|Any CPU = Debug|Any CPU
-Release|Any CPU = Release|Any CPU
-EndGlobalSection
-GlobalSection(ProjectConfigurationPlatforms) = postSolution
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Debug|Any CPU.Build.0 = Debug|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Release|Any CPU.ActiveCfg = Release|Any CPU
-{768B8DC6-54EE-4D40-9B20-7857E1D742A4}.Release|Any CPU.Build.0 = Release|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Debug|Any CPU.Build.0 = Debug|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Release|Any CPU.ActiveCfg = Release|Any CPU
-{19F1DEBC-DE5E-4517-8062-F000CD499087}.Release|Any CPU.Build.0 = Release|Any CPU
-EndGlobalSection
-GlobalSection(SolutionProperties) = preSolution
-HideSolutionNode = FALSE
-EndGlobalSection
-EndGlobal
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/ApiResponse.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/ApiResponse.cs
deleted file mode 100644
index 2c35c0c5fd9..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/ApiResponse.cs
+++ /dev/null
@@ -1,185 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// Describes the result of uploading an image resource
-    /// </summary>
-    public sealed class ApiResponse:  IEquatable<ApiResponse>
-    { 
-        /// <summary>
-        /// Code
-        /// </summary>
-        public int? Code { get; private set; }
-
-        /// <summary>
-        /// Type
-        /// </summary>
-        public string Type { get; private set; }
-
-        /// <summary>
-        /// Message
-        /// </summary>
-        public string Message { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use ApiResponse.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public ApiResponse()
-        {
-        }
-
-        private ApiResponse(int? Code, string Type, string Message)
-        {
-            
-            this.Code = Code;
-            
-            this.Type = Type;
-            
-            this.Message = Message;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of ApiResponse.
-        /// </summary>
-        /// <returns>ApiResponseBuilder</returns>
-        public static ApiResponseBuilder Builder()
-        {
-            return new ApiResponseBuilder();
-        }
-
-        /// <summary>
-        /// Returns ApiResponseBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>ApiResponseBuilder</returns>
-        public ApiResponseBuilder With()
-        {
-            return Builder()
-                .Code(Code)
-                .Type(Type)
-                .Message(Message);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(ApiResponse other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (ApiResponse.
-        /// </summary>
-        /// <param name="left">Compared (ApiResponse</param>
-        /// <param name="right">Compared (ApiResponse</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (ApiResponse left, ApiResponse right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (ApiResponse.
-        /// </summary>
-        /// <param name="left">Compared (ApiResponse</param>
-        /// <param name="right">Compared (ApiResponse</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (ApiResponse left, ApiResponse right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of ApiResponse.
-        /// </summary>
-        public sealed class ApiResponseBuilder
-        {
-            private int? _Code;
-            private string _Type;
-            private string _Message;
-
-            internal ApiResponseBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Code property.
-            /// </summary>
-            /// <param name="value">Code</param>
-            public ApiResponseBuilder Code(int? value)
-            {
-                _Code = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Type property.
-            /// </summary>
-            /// <param name="value">Type</param>
-            public ApiResponseBuilder Type(string value)
-            {
-                _Type = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for ApiResponse.Message property.
-            /// </summary>
-            /// <param name="value">Message</param>
-            public ApiResponseBuilder Message(string value)
-            {
-                _Message = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of ApiResponse.
-            /// </summary>
-            /// <returns>ApiResponse</returns>
-            public ApiResponse Build()
-            {
-                Validate();
-                return new ApiResponse(
-                    Code: _Code,
-                    Type: _Type,
-                    Message: _Message
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Category.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Category.cs
deleted file mode 100644
index 3cadeec39fe..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Category.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A category for a pet
-    /// </summary>
-    public sealed class Category:  IEquatable<Category>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Category.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Category()
-        {
-        }
-
-        private Category(long? Id, string Name)
-        {
-            
-            this.Id = Id;
-            
-            this.Name = Name;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Category.
-        /// </summary>
-        /// <returns>CategoryBuilder</returns>
-        public static CategoryBuilder Builder()
-        {
-            return new CategoryBuilder();
-        }
-
-        /// <summary>
-        /// Returns CategoryBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>CategoryBuilder</returns>
-        public CategoryBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Name(Name);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Category other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Category.
-        /// </summary>
-        /// <param name="left">Compared (Category</param>
-        /// <param name="right">Compared (Category</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Category left, Category right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Category.
-        /// </summary>
-        /// <param name="left">Compared (Category</param>
-        /// <param name="right">Compared (Category</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Category left, Category right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Category.
-        /// </summary>
-        public sealed class CategoryBuilder
-        {
-            private long? _Id;
-            private string _Name;
-
-            internal CategoryBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Category.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public CategoryBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Category.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public CategoryBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Category.
-            /// </summary>
-            /// <returns>Category</returns>
-            public Category Build()
-            {
-                Validate();
-                return new Category(
-                    Id: _Id,
-                    Name: _Name
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Order.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Order.cs
deleted file mode 100644
index 3ef8e9133c7..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Order.cs
+++ /dev/null
@@ -1,247 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// An order for a pets from the pet store
-    /// </summary>
-    public sealed class Order:  IEquatable<Order>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// PetId
-        /// </summary>
-        public long? PetId { get; private set; }
-
-        /// <summary>
-        /// Quantity
-        /// </summary>
-        public int? Quantity { get; private set; }
-
-        /// <summary>
-        /// ShipDate
-        /// </summary>
-        public DateTime? ShipDate { get; private set; }
-
-        /// <summary>
-        /// Order Status
-        /// </summary>
-        public StatusEnum? Status { get; private set; }
-
-        /// <summary>
-        /// Complete
-        /// </summary>
-        public bool? Complete { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Order.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Order()
-        {
-        }
-
-        private Order(long? Id, long? PetId, int? Quantity, DateTime? ShipDate, StatusEnum? Status, bool? Complete)
-        {
-            
-            this.Id = Id;
-            
-            this.PetId = PetId;
-            
-            this.Quantity = Quantity;
-            
-            this.ShipDate = ShipDate;
-            
-            this.Status = Status;
-            
-            this.Complete = Complete;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Order.
-        /// </summary>
-        /// <returns>OrderBuilder</returns>
-        public static OrderBuilder Builder()
-        {
-            return new OrderBuilder();
-        }
-
-        /// <summary>
-        /// Returns OrderBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>OrderBuilder</returns>
-        public OrderBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .PetId(PetId)
-                .Quantity(Quantity)
-                .ShipDate(ShipDate)
-                .Status(Status)
-                .Complete(Complete);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Order other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Order.
-        /// </summary>
-        /// <param name="left">Compared (Order</param>
-        /// <param name="right">Compared (Order</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Order left, Order right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Order.
-        /// </summary>
-        /// <param name="left">Compared (Order</param>
-        /// <param name="right">Compared (Order</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Order left, Order right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Order.
-        /// </summary>
-        public sealed class OrderBuilder
-        {
-            private long? _Id;
-            private long? _PetId;
-            private int? _Quantity;
-            private DateTime? _ShipDate;
-            private StatusEnum? _Status;
-            private bool? _Complete;
-
-            internal OrderBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-                _Complete = false;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public OrderBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.PetId property.
-            /// </summary>
-            /// <param name="value">PetId</param>
-            public OrderBuilder PetId(long? value)
-            {
-                _PetId = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Quantity property.
-            /// </summary>
-            /// <param name="value">Quantity</param>
-            public OrderBuilder Quantity(int? value)
-            {
-                _Quantity = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.ShipDate property.
-            /// </summary>
-            /// <param name="value">ShipDate</param>
-            public OrderBuilder ShipDate(DateTime? value)
-            {
-                _ShipDate = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Status property.
-            /// </summary>
-            /// <param name="value">Order Status</param>
-            public OrderBuilder Status(StatusEnum? value)
-            {
-                _Status = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Order.Complete property.
-            /// </summary>
-            /// <param name="value">Complete</param>
-            public OrderBuilder Complete(bool? value)
-            {
-                _Complete = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Order.
-            /// </summary>
-            /// <returns>Order</returns>
-            public Order Build()
-            {
-                Validate();
-                return new Order(
-                    Id: _Id,
-                    PetId: _PetId,
-                    Quantity: _Quantity,
-                    ShipDate: _ShipDate,
-                    Status: _Status,
-                    Complete: _Complete
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-        public enum StatusEnum { Placed, Approved, Delivered };
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Pet.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Pet.cs
deleted file mode 100644
index a9e839bb969..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Pet.cs
+++ /dev/null
@@ -1,254 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A pet for sale in the pet store
-    /// </summary>
-    public sealed class Pet:  IEquatable<Pet>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Category
-        /// </summary>
-        public Category Category { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-        /// <summary>
-        /// PhotoUrls
-        /// </summary>
-        public List<string> PhotoUrls { get; private set; }
-
-        /// <summary>
-        /// Tags
-        /// </summary>
-        public List<Tag> Tags { get; private set; }
-
-        /// <summary>
-        /// pet status in the store
-        /// </summary>
-        public StatusEnum? Status { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Pet.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Pet()
-        {
-        }
-
-        private Pet(long? Id, Category Category, string Name, List<string> PhotoUrls, List<Tag> Tags, StatusEnum? Status)
-        {
-            
-            this.Id = Id;
-            
-            this.Category = Category;
-            
-            this.Name = Name;
-            
-            this.PhotoUrls = PhotoUrls;
-            
-            this.Tags = Tags;
-            
-            this.Status = Status;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Pet.
-        /// </summary>
-        /// <returns>PetBuilder</returns>
-        public static PetBuilder Builder()
-        {
-            return new PetBuilder();
-        }
-
-        /// <summary>
-        /// Returns PetBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>PetBuilder</returns>
-        public PetBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Category(Category)
-                .Name(Name)
-                .PhotoUrls(PhotoUrls)
-                .Tags(Tags)
-                .Status(Status);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Pet other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Pet.
-        /// </summary>
-        /// <param name="left">Compared (Pet</param>
-        /// <param name="right">Compared (Pet</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Pet left, Pet right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Pet.
-        /// </summary>
-        /// <param name="left">Compared (Pet</param>
-        /// <param name="right">Compared (Pet</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Pet left, Pet right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Pet.
-        /// </summary>
-        public sealed class PetBuilder
-        {
-            private long? _Id;
-            private Category _Category;
-            private string _Name;
-            private List<string> _PhotoUrls;
-            private List<Tag> _Tags;
-            private StatusEnum? _Status;
-
-            internal PetBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public PetBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Category property.
-            /// </summary>
-            /// <param name="value">Category</param>
-            public PetBuilder Category(Category value)
-            {
-                _Category = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public PetBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.PhotoUrls property.
-            /// </summary>
-            /// <param name="value">PhotoUrls</param>
-            public PetBuilder PhotoUrls(List<string> value)
-            {
-                _PhotoUrls = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Tags property.
-            /// </summary>
-            /// <param name="value">Tags</param>
-            public PetBuilder Tags(List<Tag> value)
-            {
-                _Tags = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Pet.Status property.
-            /// </summary>
-            /// <param name="value">pet status in the store</param>
-            public PetBuilder Status(StatusEnum? value)
-            {
-                _Status = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Pet.
-            /// </summary>
-            /// <returns>Pet</returns>
-            public Pet Build()
-            {
-                Validate();
-                return new Pet(
-                    Id: _Id,
-                    Category: _Category,
-                    Name: _Name,
-                    PhotoUrls: _PhotoUrls,
-                    Tags: _Tags,
-                    Status: _Status
-                );
-            }
-
-            private void Validate()
-            { 
-                if (_Name == null)
-                {
-                    throw new ArgumentException("Name is a required property for Pet and cannot be null");
-                } 
-                if (_PhotoUrls == null)
-                {
-                    throw new ArgumentException("PhotoUrls is a required property for Pet and cannot be null");
-                } 
-            }
-        }
-
-        
-        public enum StatusEnum { Available, Pending, Sold };
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Tag.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Tag.cs
deleted file mode 100644
index e46182c334c..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/Tag.cs
+++ /dev/null
@@ -1,165 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A tag for a pet
-    /// </summary>
-    public sealed class Tag:  IEquatable<Tag>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Name
-        /// </summary>
-        public string Name { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use Tag.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public Tag()
-        {
-        }
-
-        private Tag(long? Id, string Name)
-        {
-            
-            this.Id = Id;
-            
-            this.Name = Name;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of Tag.
-        /// </summary>
-        /// <returns>TagBuilder</returns>
-        public static TagBuilder Builder()
-        {
-            return new TagBuilder();
-        }
-
-        /// <summary>
-        /// Returns TagBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>TagBuilder</returns>
-        public TagBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Name(Name);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(Tag other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (Tag.
-        /// </summary>
-        /// <param name="left">Compared (Tag</param>
-        /// <param name="right">Compared (Tag</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (Tag left, Tag right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (Tag.
-        /// </summary>
-        /// <param name="left">Compared (Tag</param>
-        /// <param name="right">Compared (Tag</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (Tag left, Tag right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of Tag.
-        /// </summary>
-        public sealed class TagBuilder
-        {
-            private long? _Id;
-            private string _Name;
-
-            internal TagBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for Tag.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public TagBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for Tag.Name property.
-            /// </summary>
-            /// <param name="value">Name</param>
-            public TagBuilder Name(string value)
-            {
-                _Name = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of Tag.
-            /// </summary>
-            /// <returns>Tag</returns>
-            public Tag Build()
-            {
-                Validate();
-                return new Tag(
-                    Id: _Id,
-                    Name: _Name
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/User.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/User.cs
deleted file mode 100644
index 29c94bbfefe..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Models/User.cs
+++ /dev/null
@@ -1,285 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Text;
-using Sharpility.Extensions;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Models
-{
-    /// <summary>
-    /// A User who is purchasing from the pet store
-    /// </summary>
-    public sealed class User:  IEquatable<User>
-    { 
-        /// <summary>
-        /// Id
-        /// </summary>
-        public long? Id { get; private set; }
-
-        /// <summary>
-        /// Username
-        /// </summary>
-        public string Username { get; private set; }
-
-        /// <summary>
-        /// FirstName
-        /// </summary>
-        public string FirstName { get; private set; }
-
-        /// <summary>
-        /// LastName
-        /// </summary>
-        public string LastName { get; private set; }
-
-        /// <summary>
-        /// Email
-        /// </summary>
-        public string Email { get; private set; }
-
-        /// <summary>
-        /// Password
-        /// </summary>
-        public string Password { get; private set; }
-
-        /// <summary>
-        /// Phone
-        /// </summary>
-        public string Phone { get; private set; }
-
-        /// <summary>
-        /// User Status
-        /// </summary>
-        public int? UserStatus { get; private set; }
-
-
-        /// <summary>
-        /// Empty constructor required by some serializers.
-        /// Use User.Builder() for instance creation instead.
-        /// </summary>
-        [Obsolete]
-        public User()
-        {
-        }
-
-        private User(long? Id, string Username, string FirstName, string LastName, string Email, string Password, string Phone, int? UserStatus)
-        {
-            
-            this.Id = Id;
-            
-            this.Username = Username;
-            
-            this.FirstName = FirstName;
-            
-            this.LastName = LastName;
-            
-            this.Email = Email;
-            
-            this.Password = Password;
-            
-            this.Phone = Phone;
-            
-            this.UserStatus = UserStatus;
-            
-        }
-
-        /// <summary>
-        /// Returns builder of User.
-        /// </summary>
-        /// <returns>UserBuilder</returns>
-        public static UserBuilder Builder()
-        {
-            return new UserBuilder();
-        }
-
-        /// <summary>
-        /// Returns UserBuilder with properties set.
-        /// Use it to change properties.
-        /// </summary>
-        /// <returns>UserBuilder</returns>
-        public UserBuilder With()
-        {
-            return Builder()
-                .Id(Id)
-                .Username(Username)
-                .FirstName(FirstName)
-                .LastName(LastName)
-                .Email(Email)
-                .Password(Password)
-                .Phone(Phone)
-                .UserStatus(UserStatus);
-        }
-
-        public override string ToString()
-        {
-            return this.PropertiesToString();
-        }
-
-        public override bool Equals(object obj)
-        {
-            return this.EqualsByProperties(obj);
-        }
-
-        public bool Equals(User other)
-        {
-            return Equals((object) other);
-        }
-
-        public override int GetHashCode()
-        {
-            return this.PropertiesHash();
-        }
-
-        /// <summary>
-        /// Implementation of == operator for (User.
-        /// </summary>
-        /// <param name="left">Compared (User</param>
-        /// <param name="right">Compared (User</param>
-        /// <returns>true if compared items are equals, false otherwise</returns>
-        public static bool operator == (User left, User right)
-        {
-            return Equals(left, right);
-        }
-
-        /// <summary>
-        /// Implementation of != operator for (User.
-        /// </summary>
-        /// <param name="left">Compared (User</param>
-        /// <param name="right">Compared (User</param>
-        /// <returns>true if compared items are not equals, false otherwise</returns>
-        public static bool operator != (User left, User right)
-        {
-            return !Equals(left, right);
-        }
-
-        /// <summary>
-        /// Builder of User.
-        /// </summary>
-        public sealed class UserBuilder
-        {
-            private long? _Id;
-            private string _Username;
-            private string _FirstName;
-            private string _LastName;
-            private string _Email;
-            private string _Password;
-            private string _Phone;
-            private int? _UserStatus;
-
-            internal UserBuilder()
-            {
-                SetupDefaults();
-            }
-
-            private void SetupDefaults()
-            {
-            }
-
-            /// <summary>
-            /// Sets value for User.Id property.
-            /// </summary>
-            /// <param name="value">Id</param>
-            public UserBuilder Id(long? value)
-            {
-                _Id = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Username property.
-            /// </summary>
-            /// <param name="value">Username</param>
-            public UserBuilder Username(string value)
-            {
-                _Username = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.FirstName property.
-            /// </summary>
-            /// <param name="value">FirstName</param>
-            public UserBuilder FirstName(string value)
-            {
-                _FirstName = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.LastName property.
-            /// </summary>
-            /// <param name="value">LastName</param>
-            public UserBuilder LastName(string value)
-            {
-                _LastName = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Email property.
-            /// </summary>
-            /// <param name="value">Email</param>
-            public UserBuilder Email(string value)
-            {
-                _Email = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Password property.
-            /// </summary>
-            /// <param name="value">Password</param>
-            public UserBuilder Password(string value)
-            {
-                _Password = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.Phone property.
-            /// </summary>
-            /// <param name="value">Phone</param>
-            public UserBuilder Phone(string value)
-            {
-                _Phone = value;
-                return this;
-            }
-
-            /// <summary>
-            /// Sets value for User.UserStatus property.
-            /// </summary>
-            /// <param name="value">User Status</param>
-            public UserBuilder UserStatus(int? value)
-            {
-                _UserStatus = value;
-                return this;
-            }
-
-
-            /// <summary>
-            /// Builds instance of User.
-            /// </summary>
-            /// <returns>User</returns>
-            public User Build()
-            {
-                Validate();
-                return new User(
-                    Id: _Id,
-                    Username: _Username,
-                    FirstName: _FirstName,
-                    LastName: _LastName,
-                    Email: _Email,
-                    Password: _Password,
-                    Phone: _Phone,
-                    UserStatus: _UserStatus
-                );
-            }
-
-            private void Validate()
-            { 
-            }
-        }
-
-        
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/PetModule.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/PetModule.cs
deleted file mode 100644
index 8dc52f8275b..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/PetModule.cs
+++ /dev/null
@@ -1,249 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using Org.OpenAPITools._v2.Models;
-using Org.OpenAPITools._v2.Utils;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Modules
-{ 
-    /// <summary>
-    /// Status values that need to be considered for filter
-    /// </summary>
-    public enum FindPetsByStatusStatusEnum
-    {
-        available = 1, 
-        pending = 2, 
-        sold = 3
-    };
-
-
-    /// <summary>
-    /// Module processing requests of Pet domain.
-    /// </summary>
-    public sealed class PetModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public PetModule(PetService service) : base("/v2")
-        { 
-            Post["/pet"] = parameters =>
-            {
-                var body = this.Bind<Pet>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'AddPet'");
-                
-                service.AddPet(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Delete["/pet/{petId}"] = parameters =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var apiKey = Parameters.ValueOf<string>(parameters, Context.Request, "apiKey", ParameterType.Header);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'DeletePet'");
-                
-                service.DeletePet(Context, petId, apiKey);
-                return new Response { ContentType = ""};
-            };
-
-            Get["/pet/findByStatus"] = parameters =>
-            {
-                var status = Parameters.ValueOf<FindPetsByStatusStatusEnum?>(parameters, Context.Request, "status", ParameterType.Query);
-                Preconditions.IsNotNull(status, "Required parameter: 'status' is missing at 'FindPetsByStatus'");
-                
-                return service.FindPetsByStatus(Context, status).ToArray();
-            };
-
-            Get["/pet/findByTags"] = parameters =>
-            {
-                var tags = Parameters.ValueOf<List<string>>(parameters, Context.Request, "tags", ParameterType.Query);
-                Preconditions.IsNotNull(tags, "Required parameter: 'tags' is missing at 'FindPetsByTags'");
-                
-                return service.FindPetsByTags(Context, tags).ToArray();
-            };
-
-            Get["/pet/{petId}"] = parameters =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'GetPetById'");
-                
-                return service.GetPetById(Context, petId);
-            };
-
-            Put["/pet"] = parameters =>
-            {
-                var body = this.Bind<Pet>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'UpdatePet'");
-                
-                service.UpdatePet(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/pet/{petId}"] = parameters =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var name = Parameters.ValueOf<string>(parameters, Context.Request, "name", ParameterType.Undefined);
-                var status = Parameters.ValueOf<string>(parameters, Context.Request, "status", ParameterType.Undefined);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'UpdatePetWithForm'");
-                
-                service.UpdatePetWithForm(Context, petId, name, status);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/pet/{petId}/uploadImage"] = parameters =>
-            {
-                var petId = Parameters.ValueOf<long?>(parameters, Context.Request, "petId", ParameterType.Path);
-                var additionalMetadata = Parameters.ValueOf<string>(parameters, Context.Request, "additionalMetadata", ParameterType.Undefined);
-                var file = Parameters.ValueOf<System.IO.Stream>(parameters, Context.Request, "file", ParameterType.Undefined);
-                Preconditions.IsNotNull(petId, "Required parameter: 'petId' is missing at 'UploadFile'");
-                
-                return service.UploadFile(Context, petId, additionalMetadata, file);
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling Pet requests.
-    /// </summary>
-    public interface PetService
-    {
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Pet object that needs to be added to the store</param>
-        /// <returns></returns>
-        void AddPet(NancyContext context, Pet body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">Pet id to delete</param>
-        /// <param name="apiKey"> (optional)</param>
-        /// <returns></returns>
-        void DeletePet(NancyContext context, long? petId, string apiKey);
-
-        /// <summary>
-        /// Multiple status values can be provided with comma separated strings
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="status">Status values that need to be considered for filter</param>
-        /// <returns>List&lt;Pet&gt;</returns>
-        List<Pet> FindPetsByStatus(NancyContext context, FindPetsByStatusStatusEnum? status);
-
-        /// <summary>
-        /// Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="tags">Tags to filter by</param>
-        /// <returns>List&lt;Pet&gt;</returns>
-        [Obsolete]
-        List<Pet> FindPetsByTags(NancyContext context, List<string> tags);
-
-        /// <summary>
-        /// Returns a single pet
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet to return</param>
-        /// <returns>Pet</returns>
-        Pet GetPetById(NancyContext context, long? petId);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Pet object that needs to be added to the store</param>
-        /// <returns></returns>
-        void UpdatePet(NancyContext context, Pet body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet that needs to be updated</param>
-        /// <param name="name">Updated name of the pet (optional)</param>
-        /// <param name="status">Updated status of the pet (optional)</param>
-        /// <returns></returns>
-        void UpdatePetWithForm(NancyContext context, long? petId, string name, string status);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="petId">ID of pet to update</param>
-        /// <param name="additionalMetadata">Additional data to pass to server (optional)</param>
-        /// <param name="file">file to upload (optional)</param>
-        /// <returns>ApiResponse</returns>
-        ApiResponse UploadFile(NancyContext context, long? petId, string additionalMetadata, System.IO.Stream file);
-    }
-
-    /// <summary>
-    /// Abstraction of PetService.
-    /// </summary>
-    public abstract class AbstractPetService: PetService
-    {
-        public virtual void AddPet(NancyContext context, Pet body)
-        {
-            AddPet(body);
-        }
-
-        public virtual void DeletePet(NancyContext context, long? petId, string apiKey)
-        {
-            DeletePet(petId, apiKey);
-        }
-
-        public virtual List<Pet> FindPetsByStatus(NancyContext context, FindPetsByStatusStatusEnum? status)
-        {
-            return FindPetsByStatus(status);
-        }
-
-        [Obsolete]
-        public virtual List<Pet> FindPetsByTags(NancyContext context, List<string> tags)
-        {
-            return FindPetsByTags(tags);
-        }
-
-        public virtual Pet GetPetById(NancyContext context, long? petId)
-        {
-            return GetPetById(petId);
-        }
-
-        public virtual void UpdatePet(NancyContext context, Pet body)
-        {
-            UpdatePet(body);
-        }
-
-        public virtual void UpdatePetWithForm(NancyContext context, long? petId, string name, string status)
-        {
-            UpdatePetWithForm(petId, name, status);
-        }
-
-        public virtual ApiResponse UploadFile(NancyContext context, long? petId, string additionalMetadata, System.IO.Stream file)
-        {
-            return UploadFile(petId, additionalMetadata, file);
-        }
-
-        protected abstract void AddPet(Pet body);
-
-        protected abstract void DeletePet(long? petId, string apiKey);
-
-        protected abstract List<Pet> FindPetsByStatus(FindPetsByStatusStatusEnum? status);
-
-        [Obsolete]
-        protected abstract List<Pet> FindPetsByTags(List<string> tags);
-
-        protected abstract Pet GetPetById(long? petId);
-
-        protected abstract void UpdatePet(Pet body);
-
-        protected abstract void UpdatePetWithForm(long? petId, string name, string status);
-
-        protected abstract ApiResponse UploadFile(long? petId, string additionalMetadata, System.IO.Stream file);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/StoreModule.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/StoreModule.cs
deleted file mode 100644
index 0c75b02fd9a..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/StoreModule.cs
+++ /dev/null
@@ -1,128 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using Org.OpenAPITools._v2.Models;
-using Org.OpenAPITools._v2.Utils;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Modules
-{ 
-
-    /// <summary>
-    /// Module processing requests of Store domain.
-    /// </summary>
-    public sealed class StoreModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public StoreModule(StoreService service) : base("/v2")
-        { 
-            Delete["/store/order/{orderId}"] = parameters =>
-            {
-                var orderId = Parameters.ValueOf<string>(parameters, Context.Request, "orderId", ParameterType.Path);
-                Preconditions.IsNotNull(orderId, "Required parameter: 'orderId' is missing at 'DeleteOrder'");
-                
-                service.DeleteOrder(Context, orderId);
-                return new Response { ContentType = ""};
-            };
-
-            Get["/store/inventory"] = parameters =>
-            {
-                
-                return service.GetInventory(Context);
-            };
-
-            Get["/store/order/{orderId}"] = parameters =>
-            {
-                var orderId = Parameters.ValueOf<long?>(parameters, Context.Request, "orderId", ParameterType.Path);
-                Preconditions.IsNotNull(orderId, "Required parameter: 'orderId' is missing at 'GetOrderById'");
-                
-                return service.GetOrderById(Context, orderId);
-            };
-
-            Post["/store/order"] = parameters =>
-            {
-                var body = this.Bind<Order>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'PlaceOrder'");
-                
-                return service.PlaceOrder(Context, body);
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling Store requests.
-    /// </summary>
-    public interface StoreService
-    {
-        /// <summary>
-        /// For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="orderId">ID of the order that needs to be deleted</param>
-        /// <returns></returns>
-        void DeleteOrder(NancyContext context, string orderId);
-
-        /// <summary>
-        /// Returns a map of status codes to quantities
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <returns>Dictionary&lt;string, int?&gt;</returns>
-        Dictionary<string, int?> GetInventory(NancyContext context);
-
-        /// <summary>
-        /// For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="orderId">ID of pet that needs to be fetched</param>
-        /// <returns>Order</returns>
-        Order GetOrderById(NancyContext context, long? orderId);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">order placed for purchasing the pet</param>
-        /// <returns>Order</returns>
-        Order PlaceOrder(NancyContext context, Order body);
-    }
-
-    /// <summary>
-    /// Abstraction of StoreService.
-    /// </summary>
-    public abstract class AbstractStoreService: StoreService
-    {
-        public virtual void DeleteOrder(NancyContext context, string orderId)
-        {
-            DeleteOrder(orderId);
-        }
-
-        public virtual Dictionary<string, int?> GetInventory(NancyContext context)
-        {
-            return GetInventory();
-        }
-
-        public virtual Order GetOrderById(NancyContext context, long? orderId)
-        {
-            return GetOrderById(orderId);
-        }
-
-        public virtual Order PlaceOrder(NancyContext context, Order body)
-        {
-            return PlaceOrder(body);
-        }
-
-        protected abstract void DeleteOrder(string orderId);
-
-        protected abstract Dictionary<string, int?> GetInventory();
-
-        protected abstract Order GetOrderById(long? orderId);
-
-        protected abstract Order PlaceOrder(Order body);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/UserModule.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/UserModule.cs
deleted file mode 100644
index cc268b9a2c5..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Modules/UserModule.cs
+++ /dev/null
@@ -1,233 +0,0 @@
-using System;
-using Nancy;
-using Nancy.ModelBinding;
-using System.Collections.Generic;
-using Sharpility.Base;
-using Org.OpenAPITools._v2.Models;
-using Org.OpenAPITools._v2.Utils;
-using NodaTime;
-
-namespace Org.OpenAPITools._v2.Modules
-{ 
-
-    /// <summary>
-    /// Module processing requests of User domain.
-    /// </summary>
-    public sealed class UserModule : NancyModule
-    {
-        /// <summary>
-        /// Sets up HTTP methods mappings.
-        /// </summary>
-        /// <param name="service">Service handling requests</param>
-        public UserModule(UserService service) : base("/v2")
-        { 
-            Post["/user"] = parameters =>
-            {
-                var body = this.Bind<User>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUser'");
-                
-                service.CreateUser(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/user/createWithArray"] = parameters =>
-            {
-                var body = this.Bind<List<User>>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUsersWithArrayInput'");
-                
-                service.CreateUsersWithArrayInput(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Post["/user/createWithList"] = parameters =>
-            {
-                var body = this.Bind<List<User>>();
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'CreateUsersWithListInput'");
-                
-                service.CreateUsersWithListInput(Context, body);
-                return new Response { ContentType = ""};
-            };
-
-            Delete["/user/{username}"] = parameters =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'DeleteUser'");
-                
-                service.DeleteUser(Context, username);
-                return new Response { ContentType = ""};
-            };
-
-            Get["/user/{username}"] = parameters =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'GetUserByName'");
-                
-                return service.GetUserByName(Context, username);
-            };
-
-            Get["/user/login"] = parameters =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Query);
-                var password = Parameters.ValueOf<string>(parameters, Context.Request, "password", ParameterType.Query);
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'LoginUser'");
-                
-                Preconditions.IsNotNull(password, "Required parameter: 'password' is missing at 'LoginUser'");
-                
-                return service.LoginUser(Context, username, password);
-            };
-
-            Get["/user/logout"] = parameters =>
-            {
-                
-                service.LogoutUser(Context);
-                return new Response { ContentType = ""};
-            };
-
-            Put["/user/{username}"] = parameters =>
-            {
-                var username = Parameters.ValueOf<string>(parameters, Context.Request, "username", ParameterType.Path);
-                var body = this.Bind<User>();
-                Preconditions.IsNotNull(username, "Required parameter: 'username' is missing at 'UpdateUser'");
-                
-                Preconditions.IsNotNull(body, "Required parameter: 'body' is missing at 'UpdateUser'");
-                
-                service.UpdateUser(Context, username, body);
-                return new Response { ContentType = ""};
-            };
-        }
-    }
-
-    /// <summary>
-    /// Service handling User requests.
-    /// </summary>
-    public interface UserService
-    {
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">Created user object</param>
-        /// <returns></returns>
-        void CreateUser(NancyContext context, User body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">List of user object</param>
-        /// <returns></returns>
-        void CreateUsersWithArrayInput(NancyContext context, List<User> body);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="body">List of user object</param>
-        /// <returns></returns>
-        void CreateUsersWithListInput(NancyContext context, List<User> body);
-
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The name that needs to be deleted</param>
-        /// <returns></returns>
-        void DeleteUser(NancyContext context, string username);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The name that needs to be fetched. Use user1 for testing.</param>
-        /// <returns>User</returns>
-        User GetUserByName(NancyContext context, string username);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">The user name for login</param>
-        /// <param name="password">The password for login in clear text</param>
-        /// <returns>string</returns>
-        string LoginUser(NancyContext context, string username, string password);
-
-        /// <summary>
-        /// 
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <returns></returns>
-        void LogoutUser(NancyContext context);
-
-        /// <summary>
-        /// This can only be done by the logged in user.
-        /// </summary>
-        /// <param name="context">Context of request</param>
-        /// <param name="username">name that need to be deleted</param>
-        /// <param name="body">Updated user object</param>
-        /// <returns></returns>
-        void UpdateUser(NancyContext context, string username, User body);
-    }
-
-    /// <summary>
-    /// Abstraction of UserService.
-    /// </summary>
-    public abstract class AbstractUserService: UserService
-    {
-        public virtual void CreateUser(NancyContext context, User body)
-        {
-            CreateUser(body);
-        }
-
-        public virtual void CreateUsersWithArrayInput(NancyContext context, List<User> body)
-        {
-            CreateUsersWithArrayInput(body);
-        }
-
-        public virtual void CreateUsersWithListInput(NancyContext context, List<User> body)
-        {
-            CreateUsersWithListInput(body);
-        }
-
-        public virtual void DeleteUser(NancyContext context, string username)
-        {
-            DeleteUser(username);
-        }
-
-        public virtual User GetUserByName(NancyContext context, string username)
-        {
-            return GetUserByName(username);
-        }
-
-        public virtual string LoginUser(NancyContext context, string username, string password)
-        {
-            return LoginUser(username, password);
-        }
-
-        public virtual void LogoutUser(NancyContext context)
-        {
-            LogoutUser();
-        }
-
-        public virtual void UpdateUser(NancyContext context, string username, User body)
-        {
-            UpdateUser(username, body);
-        }
-
-        protected abstract void CreateUser(User body);
-
-        protected abstract void CreateUsersWithArrayInput(List<User> body);
-
-        protected abstract void CreateUsersWithListInput(List<User> body);
-
-        protected abstract void DeleteUser(string username);
-
-        protected abstract User GetUserByName(string username);
-
-        protected abstract string LoginUser(string username, string password);
-
-        protected abstract void LogoutUser();
-
-        protected abstract void UpdateUser(string username, User body);
-    }
-
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Org.OpenAPITools.csproj b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Org.OpenAPITools.csproj
deleted file mode 100644
index b26666605cd..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Org.OpenAPITools.csproj
+++ /dev/null
@@ -1,66 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-    <PropertyGroup>
-        <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-        <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-        <ProjectGuid>{768B8DC6-54EE-4D40-9B20-7857E1D742A4}</ProjectGuid>
-        <OutputType>Library</OutputType>
-        <AppDesignerFolder>Properties</AppDesignerFolder>
-        <RootNamespace>Org.OpenAPITools._v2</RootNamespace>
-        <AssemblyName>Org.OpenAPITools</AssemblyName>
-            <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
-        <FileAlignment>512</FileAlignment>
-    </PropertyGroup>
-    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-        <DebugSymbols>true</DebugSymbols>
-        <DebugType>full</DebugType>
-        <Optimize>false</Optimize>
-        <OutputPath>bin\Debug\</OutputPath>
-        <DefineConstants>DEBUG;TRACE</DefineConstants>
-        <ErrorReport>prompt</ErrorReport>
-        <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Debug\Org.OpenAPITools.XML</DocumentationFile>
-    </PropertyGroup>
-    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-        <DebugType>pdbonly</DebugType>
-        <Optimize>true</Optimize>
-        <OutputPath>bin\Release\</OutputPath>
-        <DefineConstants>TRACE</DefineConstants>
-        <ErrorReport>prompt</ErrorReport>
-        <WarningLevel>4</WarningLevel>
-        <DocumentationFile>bin\Release\Org.OpenAPITools.XML</DocumentationFile>
-    </PropertyGroup>
-    <ItemGroup>
-        <Reference Include="Nancy, Version=1.4.2.0, Culture=neutral, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\Nancy.1.4.3\lib\net40\Nancy.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="NodaTime, Version=1.3.0.0, Culture=neutral, PublicKeyToken=4226afe0d9b296d1, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\NodaTime.1.3.1\lib\net35-Client\NodaTime.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="Sharpility, Version=1.2.2.0, Culture=neutral, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\Sharpility.1.2.2\lib\net45\Sharpility.dll</HintPath>
-            <Private>True</Private>
-        </Reference>
-        <Reference Include="System.Collections.Immutable, Version=1.1.37.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-            <HintPath>..\..\packages\System.Collections.Immutable.1.1.37\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
-            <Private>True</Private>
-        </Reference>        <Reference Include="System"/>
-        <Reference Include="System.Core"/>
-        <Reference Include="System.Xml.Linq"/>
-        <Reference Include="System.Data.DataSetExtensions"/>
-        <Reference Include="Microsoft.CSharp"/>
-        <Reference Include="System.Data"/>
-        <Reference Include="System.Runtime.Serialization"/>
-        <Reference Include="System.Xml"/>
-    </ItemGroup>
-    <ItemGroup>
-        <Compile Include="**\*.cs" Exclude="obj\**"/>
-    </ItemGroup>
-    <ItemGroup>
-        <Content Include="packages.config"/>
-    </ItemGroup>
-    <Import Project="$(MsBuildToolsPath)\Microsoft.CSharp.targets"/>
-</Project>
-
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Org.OpenAPITools.nuspec b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Org.OpenAPITools.nuspec
deleted file mode 100644
index d4ee2fc102a..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Org.OpenAPITools.nuspec
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0"?>
-<package>
-    <metadata>
-        <id>Org.OpenAPITools</id>
-        <title>Org.OpenAPITools</title>
-        <version>1.0.0</version>
-        <authors>openapi-generator</authors>
-        <owners>openapi-generator</owners>
-        <requireLicenseAcceptance>false</requireLicenseAcceptance>
-        <description>NancyFx Org.OpenAPITools API</description>
-        <licenseUrl>https://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>
-    </metadata>
-</package>
\ No newline at end of file
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Utils/LocalDateConverter.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Utils/LocalDateConverter.cs
deleted file mode 100644
index dd90cbf5133..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Utils/LocalDateConverter.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using Nancy.Bootstrapper;
-using Nancy.Json;
-using NodaTime;
-using NodaTime.Text;
-using System;
-using System.Collections.Generic;
-
-namespace Org.OpenAPITools._v2.Utils
-{
-    /// <summary>
-    /// (De)serializes a <see cref="NodaTime.LocalDate"/> to a string using 
-    /// the <a href="https://xml2rfc.tools.ietf.org/public/rfc/html/rfc3339.html#anchor14">RFC3339</a> 
-    /// <code>full-date</code> format.
-    /// </summary>
-    public class LocalDateConverter : JavaScriptPrimitiveConverter, IApplicationStartup
-    {
-        public override IEnumerable<Type> SupportedTypes
-        {
-            get
-            {
-                yield return typeof(LocalDate);
-                yield return typeof(LocalDate?);
-            }
-        }
-
-        public void Initialize(IPipelines pipelines)
-        {
-            JsonSettings.PrimitiveConverters.Add(new LocalDateConverter());
-        }
-
-
-        public override object Serialize(object obj, JavaScriptSerializer serializer)
-        {
-            if (obj is LocalDate)
-            {
-                LocalDate localDate = (LocalDate)obj;
-                return LocalDatePattern.IsoPattern.Format(localDate);
-            }
-            return null;
-        }
-
-        public override object Deserialize(object primitiveValue, Type type, JavaScriptSerializer serializer)
-        {
-            if ((type == typeof(LocalDate) || type == typeof(LocalDate?)) && primitiveValue is string)
-            {
-                try
-                {
-                    return LocalDatePattern.IsoPattern.Parse(primitiveValue as string).GetValueOrThrow();
-                }
-                catch { }
-            }
-            return null;
-        }
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Utils/Parameters.cs b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Utils/Parameters.cs
deleted file mode 100644
index 847527a2dbb..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/Utils/Parameters.cs
+++ /dev/null
@@ -1,450 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Collections.Immutable;
-using System.Linq;
-using Nancy;
-using NodaTime;
-using NodaTime.Text;
-using Sharpility.Base;
-using Sharpility.Extensions;
-using Sharpility.Util;
-
-namespace Org.OpenAPITools._v2.Utils
-{
-    internal static class Parameters
-    {
-        private static readonly IDictionary<Type, Func<Parameter, object>> Parsers = CreateParsers();
-
-        internal static TValue ValueOf<TValue>(dynamic parameters, Request request, string name, ParameterType parameterType)
-        {
-            var valueType = typeof(TValue);
-            var valueUnderlyingType = Nullable.GetUnderlyingType(valueType);
-            var isNullable = default(TValue) == null;
-            string value = RawValueOf(parameters, request, name, parameterType);
-            Preconditions.Evaluate(!string.IsNullOrEmpty(value) || isNullable, string.Format("Required parameter: '{0}' is missing", name));
-            if (value == null && isNullable)
-            {
-                return default(TValue);
-            }
-            if (valueType.IsEnum || (valueUnderlyingType != null && valueUnderlyingType.IsEnum))
-            {
-                return EnumValueOf<TValue>(name, value);
-            }
-            return ValueOf<TValue>(parameters, name, value, valueType, request, parameterType);
-        }
-
-        private static string RawValueOf(dynamic parameters, Request request, string name, ParameterType parameterType)
-        {
-            try
-            {
-                switch (parameterType)
-                {
-                    case ParameterType.Query:
-                        string querValue = request.Query[name];
-                        return querValue;
-                    case ParameterType.Path:
-                        string pathValue = parameters[name];
-                        return pathValue;
-                    case ParameterType.Header:
-                        var headerValue = request.Headers[name];
-                        return headerValue != null ? string.Join(",", headerValue) : null;
-                }
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(string.Format("Could not obtain value of '{0}' parameter", name), e);
-            }
-            throw new InvalidOperationException(string.Format("Parameter with type: {0} is not supported", parameterType));
-        }
-
-        private static TValue EnumValueOf<TValue>(string name, string value)
-        {
-            var valueType = typeof(TValue);
-            var enumType = valueType.IsEnum ? valueType : Nullable.GetUnderlyingType(valueType);
-            Preconditions.IsNotNull(enumType, () => new InvalidOperationException(
-                string.Format("Could not parse parameter: '{0}' to enum. Type {1} is not enum", name, valueType)));
-            var values = Enum.GetValues(enumType);
-            foreach (var entry in values)
-            {
-                if (entry.ToString().EqualsIgnoreCases(value)
-                    || ((int)entry).ToString().EqualsIgnoreCases(value))
-                {
-                    return (TValue)entry;
-                }
-            }
-            throw new ArgumentException(string.Format("Parameter: '{0}' value: '{1}' is not supported. Expected one of: {2}",
-                    name, value, Strings.ToString(values)));
-        }
-
-        private static TValue ValueOf<TValue>(dynamic parameters, string name, string value, Type valueType, Request request, ParameterType parameterType)
-        {
-            var parser = Parsers.GetIfPresent(valueType);
-            if (parser != null)
-            {
-                return ParseValueUsing<TValue>(name, value, valueType, parser);
-            }
-            if (parameterType == ParameterType.Path)
-            {
-                return DynamicValueOf<TValue>(parameters, name);
-            }
-            if (parameterType == ParameterType.Query)
-            {
-                return DynamicValueOf<TValue>(request.Query, name);
-            }
-            throw new InvalidOperationException(string.Format("Could not get value for {0} with type {1}", name, valueType));
-        }
-
-        private static TValue ParseValueUsing<TValue>(string name, string value, Type valueType, Func<Parameter, object> parser)
-        {
-            var result = parser(Parameter.Of(name, value));
-            try
-            {
-                return (TValue)result;
-            }
-            catch (InvalidCastException)
-            {
-                throw new InvalidOperationException(
-                    string.Format("Could not parse parameter: '{0}' with value: '{1}'. " +
-                                  "Received: '{2}', expected: '{3}'.",
-                                  name, value, result.GetType(), valueType));
-            }
-        }
-
-        private static TValue DynamicValueOf<TValue>(dynamic parameters, string name)
-        {
-            string value = parameters[name];
-            try
-            {
-                TValue result = parameters[name];
-                return result;
-            }
-            catch (InvalidCastException)
-            {
-                throw new InvalidOperationException(Strings.Format("Parameter: '{0}' value: '{1}' could not be parsed. " +
-                                                                  "Expected type: '{2}' is not supported",
-                                                                  name, value, typeof(TValue)));
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(string.Format("Could not get '{0}' value of '{1}' type dynamicly",
-                    name, typeof(TValue)), e);
-            }
-        }
-
-        private static IDictionary<Type, Func<Parameter, object>> CreateParsers()
-        {
-            var parsers = ImmutableDictionary.CreateBuilder<Type, Func<Parameter, object>>();
-            parsers.Put(typeof(string), value => value.Value);
-            parsers.Put(typeof(bool), SafeParse(bool.Parse));
-            parsers.Put(typeof(bool?), SafeParse(bool.Parse));
-            parsers.Put(typeof(byte), SafeParse(byte.Parse));
-            parsers.Put(typeof(sbyte?), SafeParse(sbyte.Parse));
-            parsers.Put(typeof(short), SafeParse(short.Parse));
-            parsers.Put(typeof(short?), SafeParse(short.Parse));
-            parsers.Put(typeof(ushort), SafeParse(ushort.Parse));
-            parsers.Put(typeof(ushort?), SafeParse(ushort.Parse));
-            parsers.Put(typeof(int), SafeParse(int.Parse));
-            parsers.Put(typeof(int?), SafeParse(int.Parse));
-            parsers.Put(typeof(uint), SafeParse(uint.Parse));
-            parsers.Put(typeof(uint?), SafeParse(uint.Parse));
-            parsers.Put(typeof(long), SafeParse(long.Parse));
-            parsers.Put(typeof(long?), SafeParse(long.Parse));
-            parsers.Put(typeof(ulong), SafeParse(ulong.Parse));
-            parsers.Put(typeof(ulong?), SafeParse(ulong.Parse));
-            parsers.Put(typeof(float), SafeParse(float.Parse));
-            parsers.Put(typeof(float?), SafeParse(float.Parse));
-            parsers.Put(typeof(double), SafeParse(double.Parse));
-            parsers.Put(typeof(double?), SafeParse(double.Parse));
-            parsers.Put(typeof(decimal), SafeParse(decimal.Parse));
-            parsers.Put(typeof(decimal?), SafeParse(decimal.Parse));
-            parsers.Put(typeof(DateTime), SafeParse(DateTime.Parse));
-            parsers.Put(typeof(DateTime?), SafeParse(DateTime.Parse));
-            parsers.Put(typeof(TimeSpan), SafeParse(TimeSpan.Parse));
-            parsers.Put(typeof(TimeSpan?), SafeParse(TimeSpan.Parse));
-            parsers.Put(typeof(ZonedDateTime), SafeParse(ParseZonedDateTime));
-            parsers.Put(typeof(ZonedDateTime?), SafeParse(ParseZonedDateTime));
-            parsers.Put(typeof(LocalDate), SafeParse(ParseLocalDate));
-            parsers.Put(typeof(LocalDate?), SafeParse(ParseLocalDate));
-            parsers.Put(typeof(LocalTime), SafeParse(ParseLocalTime));
-            parsers.Put(typeof(LocalTime?), SafeParse(ParseLocalTime));
-
-            parsers.Put(typeof(IEnumerable<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(ICollection<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(IList<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(List<string>), ListParse(value => value));
-            parsers.Put(typeof(ISet<string>), ImmutableListParse(value => value));
-            parsers.Put(typeof(HashSet<string>), SetParse(value => value));
-
-            parsers.Put(typeof(IEnumerable<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(ICollection<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(IList<bool?>), NullableImmutableListParse(bool.Parse));
-            parsers.Put(typeof(List<bool?>), NullableListParse(bool.Parse));
-            parsers.Put(typeof(ISet<bool?>), NullableImmutableSetParse(bool.Parse));
-            parsers.Put(typeof(HashSet<bool?>), NullableSetParse(bool.Parse));
-
-            parsers.Put(typeof(IEnumerable<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(ICollection<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(IList<byte>), ImmutableListParse(byte.Parse));
-            parsers.Put(typeof(List<byte>), ListParse(byte.Parse));
-            parsers.Put(typeof(ISet<byte>), ImmutableSetParse(byte.Parse));
-            parsers.Put(typeof(HashSet<byte>), SetParse(byte.Parse));
-
-            parsers.Put(typeof(IEnumerable<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(ICollection<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(IList<sbyte>), ImmutableListParse(sbyte.Parse));
-            parsers.Put(typeof(List<sbyte>), ListParse(sbyte.Parse));
-            parsers.Put(typeof(ISet<sbyte>), ImmutableSetParse(sbyte.Parse));
-            parsers.Put(typeof(HashSet<sbyte>), SetParse(sbyte.Parse));
-
-            parsers.Put(typeof(IEnumerable<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(ICollection<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(IList<short>), ImmutableListParse(short.Parse));
-            parsers.Put(typeof(List<short>), ListParse(short.Parse));
-            parsers.Put(typeof(ISet<short>), ImmutableSetParse(short.Parse));
-            parsers.Put(typeof(HashSet<short>), SetParse(short.Parse));
-
-            parsers.Put(typeof(IEnumerable<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(ICollection<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(IList<ushort>), ImmutableListParse(ushort.Parse));
-            parsers.Put(typeof(List<ushort>), ListParse(ushort.Parse));
-            parsers.Put(typeof(ISet<ushort>), ImmutableSetParse(ushort.Parse));
-            parsers.Put(typeof(HashSet<ushort>), SetParse(ushort.Parse));
-
-            parsers.Put(typeof(IEnumerable<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(ICollection<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(IList<int?>), NullableImmutableListParse(int.Parse));
-            parsers.Put(typeof(List<int?>), NullableListParse(int.Parse));
-            parsers.Put(typeof(ISet<int?>), NullableImmutableSetParse(int.Parse));
-            parsers.Put(typeof(HashSet<int?>), NullableSetParse(int.Parse));
-
-            parsers.Put(typeof(IEnumerable<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(ICollection<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(IList<uint>), ImmutableListParse(uint.Parse));
-            parsers.Put(typeof(List<uint>), ListParse(uint.Parse));
-            parsers.Put(typeof(ISet<uint>), ImmutableSetParse(uint.Parse));
-            parsers.Put(typeof(HashSet<uint>), SetParse(uint.Parse));
-
-            parsers.Put(typeof(IEnumerable<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(ICollection<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(IList<long?>), NullableImmutableListParse(long.Parse));
-            parsers.Put(typeof(List<long?>), NullableListParse(long.Parse));
-            parsers.Put(typeof(ISet<long?>), NullableImmutableSetParse(long.Parse));
-            parsers.Put(typeof(HashSet<long?>), NullableSetParse(long.Parse));
-
-            parsers.Put(typeof(IEnumerable<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(ICollection<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(IList<ulong>), ImmutableListParse(ulong.Parse));
-            parsers.Put(typeof(List<ulong>), ListParse(ulong.Parse));
-            parsers.Put(typeof(ISet<ulong>), ImmutableSetParse(ulong.Parse));
-            parsers.Put(typeof(HashSet<ulong>), SetParse(ulong.Parse));
-
-            parsers.Put(typeof(IEnumerable<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(ICollection<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(IList<float?>), NullableImmutableListParse(float.Parse));
-            parsers.Put(typeof(List<float?>), NullableListParse(float.Parse));
-            parsers.Put(typeof(ISet<float?>), NullableImmutableSetParse(float.Parse));
-            parsers.Put(typeof(HashSet<float?>), NullableSetParse(float.Parse));
-
-            parsers.Put(typeof(IEnumerable<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(ICollection<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(IList<double?>), NullableImmutableListParse(double.Parse));
-            parsers.Put(typeof(List<double?>), NullableListParse(double.Parse));
-            parsers.Put(typeof(ISet<double?>), NullableImmutableSetParse(double.Parse));
-            parsers.Put(typeof(HashSet<double?>), NullableSetParse(double.Parse));
-
-            parsers.Put(typeof(IEnumerable<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(ICollection<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(IList<decimal?>), NullableImmutableListParse(decimal.Parse));
-            parsers.Put(typeof(List<decimal?>), NullableListParse(decimal.Parse));
-            parsers.Put(typeof(ISet<decimal?>), NullableImmutableSetParse(decimal.Parse));
-            parsers.Put(typeof(HashSet<decimal?>), NullableSetParse(decimal.Parse));
-
-            parsers.Put(typeof(IEnumerable<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(ICollection<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(IList<DateTime?>), NullableImmutableListParse(DateTime.Parse));
-            parsers.Put(typeof(List<DateTime?>), NullableListParse(DateTime.Parse));
-            parsers.Put(typeof(ISet<DateTime?>), NullableImmutableSetParse(DateTime.Parse));
-            parsers.Put(typeof(HashSet<DateTime?>), NullableSetParse(DateTime.Parse));
-
-            parsers.Put(typeof(IEnumerable<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(ICollection<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(IList<TimeSpan>), ImmutableListParse(TimeSpan.Parse));
-            parsers.Put(typeof(List<TimeSpan>), ListParse(TimeSpan.Parse));
-            parsers.Put(typeof(ISet<TimeSpan>), ImmutableSetParse(TimeSpan.Parse));
-            parsers.Put(typeof(HashSet<TimeSpan>), SetParse(TimeSpan.Parse));
-
-            return parsers.ToImmutableDictionary();
-        }
-
-        private static Func<Parameter, object> SafeParse<T>(Func<string, T> parse)
-        {
-            return parameter =>
-            {
-                try
-                {
-                    return parse(parameter.Value);
-                }
-                catch (OverflowException)
-                {
-                    throw ParameterOutOfRange(parameter, typeof(T));
-                }
-                catch (FormatException)
-                {
-                    throw InvalidParameterFormat(parameter, typeof(T));
-                }
-                catch (Exception e)
-                {
-                    throw new InvalidOperationException(Strings.Format("Unable to parse parameter: '{0}' with value: '{1}' to {2}",
-                        parameter.Name, parameter.Value, typeof(T)), e);
-                }
-            };
-        }
-
-        private static Func<Parameter, object> NullableListParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ListParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ListParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return new List<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToList();
-            };
-        }
-
-        private static Func<Parameter, object> NullableImmutableListParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ImmutableListParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ImmutableListParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return Lists.EmptyList<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToImmutableList();
-            };
-        }
-
-        private static Func<Parameter, object> NullableSetParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return SetParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> SetParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return new HashSet<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToSet();
-            };
-        }
-
-        private static Func<Parameter, object> NullableImmutableSetParse<T>(Func<string, T> itemParser) where T: struct
-        {
-            return ImmutableSetParse(it => it.ToNullable(itemParser));
-        }
-
-        private static Func<Parameter, object> ImmutableSetParse<T>(Func<string, T> itemParser)
-        {
-            return parameter =>
-            {
-                if (string.IsNullOrEmpty(parameter.Value))
-                {
-                    return Sets.EmptySet<T>();
-                }
-                return ParseCollection(parameter.Value, itemParser).ToImmutableHashSet();
-            };
-        }
-
-        private static ZonedDateTime ParseZonedDateTime(string value)
-        {
-            var dateTime = DateTime.Parse(value);
-            return new ZonedDateTime(Instant.FromDateTimeUtc(dateTime.ToUniversalTime()), DateTimeZone.Utc);
-        }
-
-        private static LocalDate ParseLocalDate(string value)
-        {
-            return LocalDatePattern.IsoPattern.Parse(value).Value;
-        }
-
-        private static LocalTime ParseLocalTime(string value)
-        {
-            return LocalTimePattern.ExtendedIsoPattern.Parse(value).Value;
-        }
-
-        private static ArgumentException ParameterOutOfRange(Parameter parameter, Type type)
-        {
-            return new ArgumentException(Strings.Format("Query: '{0}' value: '{1}' is out of range for: '{2}'",
-                parameter.Name, parameter.Value, type));
-        }
-
-        private static ArgumentException InvalidParameterFormat(Parameter parameter, Type type)
-        {
-            return new ArgumentException(Strings.Format("Query '{0}' value: '{1}' format is invalid for: '{2}'",
-                parameter.Name, parameter.Value, type));
-        }
-
-        private static IEnumerable<T> ParseCollection<T>(string value, Func<string, T> itemParser)
-        {
-            var results = value.Split(new[] { ',' }, StringSplitOptions.None)
-                        .Where(it => it != null)
-                        .Select(it => it.Trim())
-                        .Select(itemParser);
-            return results;
-        }
-
-        public static T? ToNullable<T>(this string s, Func<string, T> itemParser) where T : struct
-        {
-            T? result = new T?();
-            try
-            {
-                if (!string.IsNullOrEmpty(s) && s.Trim().Length > 0)
-                {
-                    result = itemParser(s);
-                }
-            }
-            catch (Exception e)
-            {
-                throw new InvalidOperationException(Strings.Format("Unable to parse value: '{0}' to nullable: '{1}'", s, typeof(T).ToString()), e);
-            }
-            return result;
-        }
-
-        private class Parameter
-        {
-            internal string Name { get; private set; }
-            internal string Value { get; private set; }
-
-            private Parameter(string name, string value)
-            {
-                Name = name;
-                Value = value;
-            }
-
-            internal static Parameter Of(string name, string value)
-            {
-                return new Parameter(name, value);
-            }
-        }
-    }
-
-    internal enum ParameterType
-    {
-        Undefined,
-        Query,
-        Path,
-        Header
-    }
-}
diff --git a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/packages.config b/samples/server/petstore/nancyfx/src/Org.OpenAPITools/packages.config
deleted file mode 100644
index e3401566e5d..00000000000
--- a/samples/server/petstore/nancyfx/src/Org.OpenAPITools/packages.config
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-    <package id="Nancy" version="1.4.3" targetFramework="net45" />
-    <package id="NodaTime" version="1.3.1" targetFramework="net45" />
-    <package id="Sharpility" version="1.2.2" targetFramework="net45" />
-    <package id="System.Collections.Immutable" version="1.1.37" targetFramework="net45" />
-</packages>
\ No newline at end of file
diff --git a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApi.java b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApi.java
index 18774a47d12..c5c8cb9db6b 100644
--- a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApi.java
+++ b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "test-headers", description = "the test-headers API")
 public interface TestHeadersApi {
diff --git a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApiController.java b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApiController.java
index 503c9cea661..cdc9e71f434 100644
--- a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApiController.java
+++ b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestHeadersApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.toto.base-path:}")
 public class TestHeadersApiController implements TestHeadersApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public TestHeadersApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApi.java b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApi.java
index 2d2d5748df5..701275ec488 100644
--- a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApi.java
+++ b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "test-query-params", description = "the test-query-params API")
 public interface TestQueryParamsApi {
diff --git a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApiController.java b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApiController.java
index 8ded34a79bb..1884ac71c22 100644
--- a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApiController.java
+++ b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/api/TestQueryParamsApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.toto.base-path:}")
 public class TestQueryParamsApiController implements TestQueryParamsApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public TestQueryParamsApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/model/TestResponse.java b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/model/TestResponse.java
index e7115a5f13b..cae289f03d1 100644
--- a/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/model/TestResponse.java
+++ b/samples/server/petstore/spring-mvc-default-value/src/main/java/org/openapitools/model/TestResponse.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TestResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TestResponse   {
+
   @JsonProperty("id")
   private Integer id;
 
@@ -41,10 +44,8 @@ public class TestResponse   {
    * Get id
    * @return id
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getId() {
     return id;
   }
@@ -62,10 +63,8 @@ public class TestResponse   {
    * Get stringField
    * @return stringField
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringField() {
     return stringField;
   }
@@ -83,11 +82,8 @@ public class TestResponse   {
    * Get numberField
    * @return numberField
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberField() {
     return numberField;
   }
@@ -105,10 +101,8 @@ public class TestResponse   {
    * Get booleanField
    * @return booleanField
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBooleanField() {
     return booleanField;
   }
@@ -117,7 +111,6 @@ public class TestResponse   {
     this.booleanField = booleanField;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -142,7 +135,6 @@ public class TestResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TestResponse {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    stringField: ").append(toIndentedString(stringField)).append("\n");
     sb.append("    numberField: ").append(toIndentedString(numberField)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/.openapi-generator/FILES b/samples/server/petstore/spring-mvc-j8-async/.openapi-generator/FILES
index 830caed1ff1..97eae4aa8c7 100644
--- a/samples/server/petstore/spring-mvc-j8-async/.openapi-generator/FILES
+++ b/samples/server/petstore/spring-mvc-j8-async/.openapi-generator/FILES
@@ -43,6 +43,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -50,6 +51,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApi.java
index d21ce1c5b69..e3fcb154af3 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -21,7 +21,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index 7e8132190d6..81dcb1da85e 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApi.java
index 337b3028326..ec169e8c453 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -30,7 +32,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -350,8 +354,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApiController.java
index 1ac9ecd804c..b81393d39d3 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 3bf73e7e388..7510bd1d479 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -21,7 +21,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 68f9c4233e8..3f4a45e1f9f 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApi.java
index 0e63ddb12aa..8f2e2c57913 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -23,7 +24,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApiController.java
index 1485b58cb3e..57cbf21bde7 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApi.java
index 54c240645ae..ec47c849851 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApi.java
@@ -22,7 +22,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApiController.java
index 3a8489c4176..a1f02f844bf 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApi.java
index 1eac87034c8..aca32843e37 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApi.java
@@ -23,7 +23,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApiController.java
index 85e90691158..8efc6418c2e 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
index fbf95bc7502..682e77202d1 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
@@ -20,8 +20,9 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
 
 import java.util.List;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Configuration
 @ComponentScan(basePackages = {"org.openapitools.api", "org.openapitools.configuration"})
 @EnableWebMvc
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebApplication.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebApplication.java
index 01abb13330d..8e9d7af8244 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebApplication.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebApplication.java
@@ -1,8 +1,9 @@
 package org.openapitools.configuration;
 
 import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebApplication extends AbstractAnnotationConfigDispatcherServletInitializer {
 
     @Override
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
index 1fa5ce119f8..691a5378ca4 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
@@ -2,8 +2,9 @@ package org.openapitools.configuration;
 
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebMvcConfiguration extends WebMvcConfigurationSupport {
     @Override
     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/spring-mvc-j8-async/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/.openapi-generator/FILES b/samples/server/petstore/spring-mvc-j8-localdatetime/.openapi-generator/FILES
index 830caed1ff1..97eae4aa8c7 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/.openapi-generator/FILES
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/.openapi-generator/FILES
@@ -43,6 +43,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -50,6 +51,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index 7e8132190d6..81dcb1da85e 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApi.java
index af0642e799e..e54e87b68f3 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) LocalDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApiController.java
index 1ac9ecd804c..b81393d39d3 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 68f9c4233e8..3f4a45e1f9f 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApi.java
index 316f07e4484..de62ec85c83 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApiController.java
index 1485b58cb3e..57cbf21bde7 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApiController.java
index 3a8489c4176..a1f02f844bf 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApi.java
index 646e9089e6a..ea62d39c13d 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApiController.java
index 85e90691158..8efc6418c2e 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
index fbf95bc7502..682e77202d1 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
@@ -20,8 +20,9 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
 
 import java.util.List;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Configuration
 @ComponentScan(basePackages = {"org.openapitools.api", "org.openapitools.configuration"})
 @EnableWebMvc
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebApplication.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebApplication.java
index 01abb13330d..8e9d7af8244 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebApplication.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebApplication.java
@@ -1,8 +1,9 @@
 package org.openapitools.configuration;
 
 import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebApplication extends AbstractAnnotationConfigDispatcherServletInitializer {
 
     @Override
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
index 1fa5ce119f8..691a5378ca4 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
@@ -2,8 +2,9 @@ package org.openapitools.configuration;
 
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebMvcConfiguration extends WebMvcConfigurationSupport {
     @Override
     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FormatTest.java
index 1eb518cb89d..63af72a20e4 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private LocalDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public LocalDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 04802633a42..d36d85b62d8 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private LocalDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public LocalDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Order.java
index 593ed335a0f..2a6c352f08b 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.LocalDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private LocalDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public LocalDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/spring-mvc-j8-localdatetime/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/.openapi-generator/FILES b/samples/server/petstore/spring-mvc-no-nullable/.openapi-generator/FILES
index 830caed1ff1..97eae4aa8c7 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/.openapi-generator/FILES
+++ b/samples/server/petstore/spring-mvc-no-nullable/.openapi-generator/FILES
@@ -43,6 +43,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -50,6 +51,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index 7e8132190d6..81dcb1da85e 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
index 6f95540156b..5b6d1540fd0 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
index 1ac9ecd804c..b81393d39d3 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 68f9c4233e8..3f4a45e1f9f 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApi.java
index 316f07e4484..de62ec85c83 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
index 1485b58cb3e..57cbf21bde7 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
index 3a8489c4176..a1f02f844bf 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
index 85e90691158..8efc6418c2e 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
index 97c36459aa0..7e3d25bb275 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
@@ -19,8 +19,9 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
 
 import java.util.List;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Configuration
 @ComponentScan(basePackages = {"org.openapitools.api", "org.openapitools.configuration"})
 @EnableWebMvc
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebApplication.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebApplication.java
index 01abb13330d..8e9d7af8244 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebApplication.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebApplication.java
@@ -1,8 +1,9 @@
 package org.openapitools.configuration;
 
 import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebApplication extends AbstractAnnotationConfigDispatcherServletInitializer {
 
     @Override
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
index 1fa5ce119f8..691a5378ca4 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
@@ -2,8 +2,9 @@ package org.openapitools.configuration;
 
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebMvcConfiguration extends WebMvcConfigurationSupport {
     @Override
     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 54acb563336..73241ece58a 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index af849ea35e7..8ccdac40b27 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index e494b1b2c60..a191e434268 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 00ab9b250fb..b319600c951 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 7e78c62f6e1..989f88c0c63 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index d01dc2c8e74..32e7a118e94 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index ef6da01824a..a9f074c13f6 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 13174a324c5..fcf049c6af9 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Animal.java
index e61b1eb77b6..c15efd1d937 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Animal.java
@@ -14,19 +14,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 96aec05a743..aecbda603cb 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index d15054d6291..194acd76a43 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
index d6ac2177926..8e8b948cac2 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCat.java
index d2ece0d81f9..4f3be6ed225 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -72,9 +75,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -83,7 +85,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
index a280a3f6cdc..824974fe614 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -70,9 +73,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -81,7 +83,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +104,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
index a064557cd58..57505b24226 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Cat.java
index fc4ab35c4fa..b8976cec9e3 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
index 9a1f6caceff..1ad2fc260c0 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Category.java
index 250c280e8b1..96a6580d410 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
index 24a57ea3f81..45154ca12c1 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Client.java
index 2b17053e1e6..fce7506b032 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Dog.java
index e1f27783a59..20460312997 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
index 05f26186f9a..5ff01330527 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
index e8101183905..5c758075628 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
index 6dc082079cf..21a99583f0d 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
@@ -9,6 +9,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
index 20672ddb0ff..f29a046fa29 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..35dca542482
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 85e4c720017..77b8104b7a7 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.time.OffsetDateTime;
@@ -14,20 +15,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,24 +40,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
index 0379f1c5c6e..e37ca010913 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,18 +11,23 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index f4b869294be..09dc39be6e8 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MapTest.java
index feba6551cdb..d23c0b96ca0 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index abbc1403bb6..0a91f59ff49 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,23 +12,27 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
index 513c6029234..1270afd57ba 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
index 8e712843796..8ced5f5e416 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..851e9c831f8
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..5dbced071c0
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
index 0c885910955..37f2d7b22f0 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Name.java
index 5551de4c543..d0980783d75 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
index 4f9793f1e12..f52e43c1dd8 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Order.java
index 89be413bc21..83e683e3d6a 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Order.java
@@ -8,18 +8,22 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
index e365d6f2f39..50e684f86e5 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
index 41cfb97d1e6..cb8a02c1e18 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
@@ -9,6 +9,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Pet.java
index 9c5a7d4617d..db4c1ce0513 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Pet.java
@@ -20,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -92,9 +95,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -112,10 +114,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -133,10 +133,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -162,10 +160,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -192,10 +188,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -213,9 +207,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -224,7 +217,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -251,7 +243,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f31a23539b9..6d313020ae9 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
index 36c8e903bf4..0dca87914af 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Tag.java
index a6afe72ee64..5c803770a21 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 529910bf9e0..ac0dd3265f7 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -139,10 +133,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -151,7 +143,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -177,7 +168,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
index 6f9abf43c41..b13b6e0d1d1 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -163,10 +155,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -175,7 +165,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -202,7 +191,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/User.java
index 523bd496274..cd278220668 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
index 2eb5145f197..cd6bf2b1a1d 100644
--- a/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/spring-mvc-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/.openapi-generator/FILES b/samples/server/petstore/spring-mvc-spring-pageable/.openapi-generator/FILES
index 42cbca1ab18..ac502713adb 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/.openapi-generator/FILES
+++ b/samples/server/petstore/spring-mvc-spring-pageable/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index 7e8132190d6..81dcb1da85e 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java
index 8c700d4f0f8..8377cfb4f66 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java
index 1ac9ecd804c..b81393d39d3 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 68f9c4233e8..3f4a45e1f9f 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
index 6e46b5c6f9d..1c463718ec6 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,11 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -21,7 +24,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
@@ -136,7 +141,7 @@ public interface PetApi {
     )
     default ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         getRequest().ifPresent(request -> {
             for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
@@ -191,7 +196,7 @@ public interface PetApi {
     )
     default ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         getRequest().ifPresent(request -> {
             for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java
index 1485b58cb3e..57cbf21bde7 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java
index 3a8489c4176..a1f02f844bf 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java
index 85e90691158..8efc6418c2e 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
index fbf95bc7502..682e77202d1 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
@@ -20,8 +20,9 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
 
 import java.util.List;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Configuration
 @ComponentScan(basePackages = {"org.openapitools.api", "org.openapitools.configuration"})
 @EnableWebMvc
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebApplication.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebApplication.java
index 01abb13330d..8e9d7af8244 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebApplication.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebApplication.java
@@ -1,8 +1,9 @@
 package org.openapitools.configuration;
 
 import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebApplication extends AbstractAnnotationConfigDispatcherServletInitializer {
 
     @Override
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
index 1fa5ce119f8..691a5378ca4 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
@@ -2,8 +2,9 @@ package org.openapitools.configuration;
 
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebMvcConfiguration extends WebMvcConfigurationSupport {
     @Override
     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Animal.java
index db4f29350de..1dc5fc69c61 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Animal.java
@@ -15,18 +15,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Pet.java
index 729ef7defa5..d330c28e679 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Pet.java
@@ -18,12 +18,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/spring-mvc-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/.openapi-generator/FILES b/samples/server/petstore/spring-mvc/.openapi-generator/FILES
index 830caed1ff1..97eae4aa8c7 100644
--- a/samples/server/petstore/spring-mvc/.openapi-generator/FILES
+++ b/samples/server/petstore/spring-mvc/.openapi-generator/FILES
@@ -43,6 +43,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -50,6 +51,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index 7e8132190d6..81dcb1da85e 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApi.java
index 6f95540156b..5b6d1540fd0 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApiController.java
index 1ac9ecd804c..b81393d39d3 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 68f9c4233e8..3f4a45e1f9f 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApi.java
index 316f07e4484..de62ec85c83 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApiController.java
index 1485b58cb3e..57cbf21bde7 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApiController.java
index 3a8489c4176..a1f02f844bf 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApiController.java
index 85e90691158..8efc6418c2e 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
index fbf95bc7502..682e77202d1 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/OpenAPIUiConfiguration.java
@@ -20,8 +20,9 @@ import org.springframework.web.method.support.HandlerMethodArgumentResolver;
 import org.springframework.data.web.PageableHandlerMethodArgumentResolver;
 
 import java.util.List;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Configuration
 @ComponentScan(basePackages = {"org.openapitools.api", "org.openapitools.configuration"})
 @EnableWebMvc
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebApplication.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebApplication.java
index 01abb13330d..8e9d7af8244 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebApplication.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebApplication.java
@@ -1,8 +1,9 @@
 package org.openapitools.configuration;
 
 import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebApplication extends AbstractAnnotationConfigDispatcherServletInitializer {
 
     @Override
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
index 1fa5ce119f8..691a5378ca4 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/configuration/WebMvcConfiguration.java
@@ -2,8 +2,9 @@ package org.openapitools.configuration;
 
 import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
+import javax.annotation.Generated;
 
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class WebMvcConfiguration extends WebMvcConfigurationSupport {
     @Override
     public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 6de38b1147e..f72d9b894ce 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -35,9 +38,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -46,7 +48,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index cacb0750801..17d2e07868b 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -36,9 +39,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -47,7 +49,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 84aa067c80d..5a89a239c7b 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -35,9 +38,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -46,7 +48,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index afbcf499d33..e1c617b3a62 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,14 +17,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -83,9 +86,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -111,10 +113,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -140,9 +140,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -168,9 +167,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -196,10 +194,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -225,10 +221,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -254,10 +248,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -283,10 +275,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -304,9 +294,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -324,9 +313,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -344,9 +332,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -355,7 +342,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -387,7 +373,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index acc58a56a36..dc95c5c9454 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -35,9 +38,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -46,7 +48,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index be84ad677c5..7325cfa7dd1 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -36,9 +39,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -47,7 +49,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index c9e823070d8..7e8cab02467 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -35,9 +38,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -46,7 +48,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index c62dc11f2ed..d14290a194c 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -35,9 +38,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -46,7 +48,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Animal.java
index 14f74376631..aded2bae8cb 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Animal.java
@@ -15,21 +15,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
-@com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -45,10 +47,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -66,9 +66,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -77,7 +76,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +98,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 61c61fc9199..f733f6d05d5 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -45,10 +48,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -57,7 +58,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -79,7 +79,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 3ad7d2361f7..948967dfb0e 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -45,10 +48,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -57,7 +58,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -79,7 +79,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayTest.java
index 4bfc2cfbb4d..e9c533969a9 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -53,9 +56,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -81,10 +83,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -110,10 +110,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -122,7 +120,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -146,7 +143,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCat.java
index ada0edb12a9..832369e9ff4 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCat.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -76,9 +79,8 @@ public enum KindEnum {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -87,7 +89,6 @@ public enum KindEnum {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCatAllOf.java
index 461ed180406..d52a06bb429 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,14 +14,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -74,9 +77,8 @@ public enum KindEnum {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -85,7 +87,6 @@ public enum KindEnum {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -107,7 +108,6 @@ public enum KindEnum {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Capitalization.java
index 437e279449e..63572bf8e8e 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -48,9 +51,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -68,9 +70,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -88,9 +89,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -108,9 +108,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -128,9 +127,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -148,9 +146,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -159,7 +156,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -186,7 +182,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Cat.java
index 12ca73636c6..108e5c8b30a 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Cat.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -35,9 +38,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -46,7 +48,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/CatAllOf.java
index bb4667b4e2c..08432295c3d 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +67,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Category.java
index 84099ff8042..1497947c1e7 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Category.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -36,9 +39,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -56,10 +58,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -68,7 +68,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -91,7 +90,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ClassModel.java
index f74c32f05c7..359d871aa11 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,15 +13,18 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
-@ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@ApiModel(description = "Model for testing model with \"_class\" property")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -34,9 +37,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -45,7 +47,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -67,7 +68,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Client.java
index 55fa62058c1..a7b07bf268c 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Client.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -33,9 +36,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -44,7 +46,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +67,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Dog.java
index 93c91767410..800b5daa10c 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Dog.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -35,9 +38,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -46,7 +48,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/DogAllOf.java
index 025e4d7759b..ce03d365868 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +67,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumArrays.java
index 30fe225638e..816494968a4 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -112,9 +115,8 @@ public enum ArrayEnumEnum {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -140,9 +142,8 @@ public enum ArrayEnumEnum {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -151,7 +152,6 @@ public enum ArrayEnumEnum {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +174,6 @@ public enum ArrayEnumEnum {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumClass.java
index 2d83af41c8e..acf588be02c 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
  * Gets or Sets EnumClass
  */
 @com.fasterxml.jackson.annotation.JsonFormat
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumTest.java
index 33ea4eacb0f..747b908c75f 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,14 +15,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -195,9 +198,8 @@ public enum EnumNumberEnum {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -215,10 +217,8 @@ public enum EnumNumberEnum {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -236,9 +236,8 @@ public enum EnumNumberEnum {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -256,9 +255,8 @@ public enum EnumNumberEnum {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -276,10 +274,8 @@ public enum EnumNumberEnum {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -288,7 +284,6 @@ public enum EnumNumberEnum {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -314,7 +309,6 @@ public enum EnumNumberEnum {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..f0763ba3be8
--- /dev/null
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,87 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 9e9cec096d0..c85e7c28fb9 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,22 +16,25 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -39,24 +43,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -68,19 +70,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -103,7 +102,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FormatTest.java
index 86d421a9d88..0964a16e87c 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,14 +20,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -51,14 +56,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -81,9 +86,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -103,9 +107,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -123,9 +126,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -145,11 +147,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -169,9 +168,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -191,9 +189,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -211,9 +208,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -231,10 +227,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -243,7 +237,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -252,15 +246,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -273,11 +265,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -295,10 +284,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -316,10 +303,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -337,10 +322,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -358,10 +341,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -370,7 +351,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -405,7 +385,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 97d1a64a22d..94d26e27248 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -36,9 +39,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -56,9 +58,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -67,7 +68,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -90,7 +90,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MapTest.java
index 726c8b5fcf0..a67a2f842a8 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MapTest.java
@@ -17,14 +17,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -94,10 +97,8 @@ public enum InnerEnum {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -123,9 +124,8 @@ public enum InnerEnum {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -151,9 +151,8 @@ public enum InnerEnum {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -179,9 +178,8 @@ public enum InnerEnum {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -190,7 +188,6 @@ public enum InnerEnum {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -215,7 +212,6 @@ public enum InnerEnum {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index b20b2dec727..09ac3cd1254 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,19 +20,22 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -47,10 +51,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -68,10 +70,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -97,10 +97,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -109,7 +107,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -133,7 +130,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Model200Response.java
index f74c29e604c..df2b0df0924 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,15 +13,18 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
-@ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@ApiModel(description = "Model for testing model name starting with number")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -37,9 +40,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -57,9 +59,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -68,7 +69,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -91,7 +91,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelApiResponse.java
index 01d035fa32d..607b3d9db62 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -39,9 +42,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -59,9 +61,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -79,9 +80,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -90,7 +90,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +113,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..5d80627d2f2
--- /dev/null
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,87 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
+
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..2ba4741b661
--- /dev/null
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,86 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelReturn.java
index d17a0da84c8..0eb9f005974 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,15 +13,18 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
-@ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@ApiModel(description = "Model for testing reserved words")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -34,9 +37,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -45,7 +47,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -67,7 +68,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Name.java
index c5882dc983a..9afeb6c3d0a 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Name.java
@@ -13,15 +13,18 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
-@ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@ApiModel(description = "Model for testing model name same as property name")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -43,10 +46,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -64,9 +65,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -84,9 +84,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -104,9 +103,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -115,7 +113,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -140,7 +137,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/NumberOnly.java
index fc212048b08..e78ca1fb663 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,14 +14,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -34,10 +37,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -46,7 +47,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -68,7 +68,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Order.java
index ede10667c9d..05b93a9c0c7 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,7 +37,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -89,9 +93,8 @@ public enum StatusEnum {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -109,9 +112,8 @@ public enum StatusEnum {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -129,9 +131,8 @@ public enum StatusEnum {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -149,10 +150,8 @@ public enum StatusEnum {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -170,9 +169,8 @@ public enum StatusEnum {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -190,9 +188,8 @@ public enum StatusEnum {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -201,7 +198,6 @@ public enum StatusEnum {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -228,7 +224,6 @@ public enum StatusEnum {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterComposite.java
index 0e0d3dc1c39..6b6318d1e2c 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,14 +14,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -40,10 +43,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -61,9 +62,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -81,9 +81,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -92,7 +91,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -116,7 +114,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterEnum.java
index e293d46d7b4..1adaf1da0cd 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -18,6 +19,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
  * Gets or Sets OuterEnum
  */
 @com.fasterxml.jackson.annotation.JsonFormat
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Pet.java
index 7f2bff42e91..07fb58bfa1f 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Pet.java
@@ -21,14 +21,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -96,9 +99,8 @@ public enum StatusEnum {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -116,10 +118,8 @@ public enum StatusEnum {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -137,10 +137,8 @@ public enum StatusEnum {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -163,10 +161,8 @@ public enum StatusEnum {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -193,10 +189,8 @@ public enum StatusEnum {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -214,9 +208,8 @@ public enum StatusEnum {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -225,7 +218,6 @@ public enum StatusEnum {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -252,7 +244,6 @@ public enum StatusEnum {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 1ddffebe8f5..f54ba1923dc 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -36,9 +39,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -56,9 +58,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -67,7 +68,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -90,7 +90,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/SpecialModelName.java
index 32a7f5a8851..240ccd25647 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -33,9 +36,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -44,7 +46,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +67,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Tag.java
index 96053497912..ddc332d3870 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/Tag.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -36,9 +39,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -56,9 +58,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -67,7 +68,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -90,7 +90,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 91863ff730f..42fd3375bfd 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -49,10 +52,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -139,10 +133,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -151,7 +143,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -177,7 +168,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderExample.java
index 9d2b6059352..48b53ae02b8 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -52,10 +55,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -73,11 +74,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -95,10 +93,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -116,10 +112,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -163,10 +155,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -175,7 +165,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -202,7 +191,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/User.java
index 3fa19e61270..f889aba17b7 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/User.java
@@ -13,14 +13,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -54,9 +57,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -74,9 +76,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -94,9 +95,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -114,9 +114,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -134,9 +133,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -154,9 +152,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -174,9 +171,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -194,9 +190,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -205,7 +200,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -234,7 +228,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/XmlItem.java
index 5d477653f0c..699a0dc8500 100644
--- a/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/spring-mvc/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,14 +16,17 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
+@com.fasterxml.jackson.annotation.JsonFilter(value = "filter-name")
 @com.fasterxml.jackson.annotation.JsonIgnoreProperties(value = "id")
 
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -129,9 +132,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -149,10 +151,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -170,9 +170,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -190,9 +189,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -218,9 +216,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -238,9 +235,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -258,10 +254,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -279,9 +273,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -299,9 +292,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -327,9 +319,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -355,9 +346,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -375,9 +365,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -395,10 +384,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -416,9 +403,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -436,9 +422,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -464,9 +449,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -492,9 +476,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -512,9 +495,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -532,10 +514,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -553,9 +533,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -573,9 +552,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -601,9 +579,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -629,9 +606,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -649,9 +625,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -669,10 +644,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -690,9 +663,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -710,9 +682,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -738,9 +709,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -766,9 +736,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -777,7 +746,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -827,7 +795,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES b/samples/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES
index 0616dc9030d..8dd51f71a27 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/.openapi-generator/FILES
@@ -43,6 +43,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -50,6 +51,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
index f510b794734..eb4ea771ca4 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index e8f022846bf..ec8ea57868a 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -1,7 +1,6 @@
 package org.openapitools.api;
 
 import org.openapitools.model.Client;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -13,6 +12,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -20,14 +20,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
index 17640717bcc..f1630d2b707 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -25,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -295,8 +299,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     );
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
index 76034668bf3..4bac5c6a4d4 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,16 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -22,6 +23,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -29,14 +31,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
@@ -209,8 +213,8 @@ public class FakeApiController implements FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index fc833265a31..3b56b4e43b2 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index b705c60d83b..64dd84c74f4 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -1,7 +1,6 @@
 package org.openapitools.api;
 
 import org.openapitools.model.Client;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -13,6 +12,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -20,14 +20,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java
index 3a0cc9d976b..9076faff682 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
@@ -18,7 +19,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
index f5625cea3f9..8c66ba7d8b5 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,8 +2,8 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -15,6 +15,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -22,14 +23,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
index cbf52ad0992..cc7e38fb9da 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApi.java
@@ -17,7 +17,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
index 203faf80f73..021d8d71835 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,7 +2,6 @@ package org.openapitools.api;
 
 import java.util.Map;
 import org.openapitools.model.Order;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -14,6 +13,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -21,14 +21,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java
index 20584092897..5560ddc4ced 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApi.java
@@ -18,7 +18,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
index 224d437db48..e7253850462 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/api/UserApiController.java
@@ -3,7 +3,6 @@ package org.openapitools.api;
 import java.util.List;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.User;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -15,6 +14,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -22,14 +22,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 66ec6689678..3792eec6748 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index aeb477e916f..7bbca47bb99 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 4631883198a..386a47d6460 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 8b8eaffbe71..47118d90ba4 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -79,9 +82,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -107,10 +109,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -136,9 +136,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -164,9 +163,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -192,10 +190,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -221,10 +217,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -250,10 +244,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -279,10 +271,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -300,9 +290,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -320,9 +309,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -340,9 +328,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -351,7 +338,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -383,7 +369,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 30654d0bec8..995edc19323 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 1a2c2a018f1..114425f840c 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 4f14fb1747d..c655acde2d4 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 3cbd66fa930..62824a37251 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -31,9 +34,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -42,7 +44,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java
index 65534bbd4e3..188d2098d77 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Animal.java
@@ -13,19 +13,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -41,10 +43,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -62,9 +62,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -73,7 +72,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -96,7 +94,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 6366e913a32..0b434e5d80d 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -41,10 +44,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -53,7 +54,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -75,7 +75,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 373e9f19c38..704b68432d7 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -41,10 +44,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -53,7 +54,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -75,7 +75,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
index 209d51c584d..5ca8ee5b7d8 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ArrayTest.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -49,9 +52,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -77,10 +79,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -106,10 +106,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -118,7 +116,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -142,7 +139,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java
index f0fa16873cb..56f1dd720fd 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCat.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
index a296dfc5819..1c40cb56ac2 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -69,9 +72,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -80,7 +82,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -102,7 +103,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
index 638fd85562a..6bad3f78e73 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Capitalization.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -44,9 +47,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -64,9 +66,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -84,9 +85,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -104,9 +104,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -124,9 +123,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -144,9 +142,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -155,7 +152,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -182,7 +178,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java
index f1a6ba0ecd8..bd2f9fc3ca0 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Cat.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
index 166fdfaf7c8..f47941a937a 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/CatAllOf.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -29,9 +32,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -40,7 +42,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -62,7 +63,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java
index 3ca43362428..49c5f68bebd 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Category.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -32,9 +35,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -52,10 +54,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -64,7 +64,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +86,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
index 314cec6e205..f5363eb06dc 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ClassModel.java
@@ -11,13 +11,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -30,9 +33,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -41,7 +43,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java
index 1853eeff5f0..fd5095aade6 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Client.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -29,9 +32,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -40,7 +42,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -62,7 +63,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java
index e1d49d61348..df2817a964b 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Dog.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
index 0249347555d..25131d8dc35 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/DogAllOf.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -29,9 +32,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -40,7 +42,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -62,7 +63,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
index 2c22712b9ce..27bbf28c2b3 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumArrays.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -106,9 +109,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -134,9 +136,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -145,7 +146,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -168,7 +168,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
index 344a5cc7f8d..1e8800e0b67 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumClass.java
@@ -8,6 +8,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -15,6 +16,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
index 47feac7def2..45037721559 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/EnumTest.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -187,9 +190,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -207,10 +209,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -228,9 +228,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -248,9 +247,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -268,10 +266,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -280,7 +276,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -306,7 +301,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..f0a6777289c
--- /dev/null
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 6bb5c5c059e..ecb3820b0cf 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import javax.validation.Valid;
@@ -13,20 +14,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -35,26 +39,24 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<File>();
     }
     this.files.add(filesItem);
     return this;
@@ -64,19 +66,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -99,7 +98,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
index d7d44db402c..063aed84e30 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import io.swagger.annotations.ApiModelProperty;
 import java.math.BigDecimal;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.LocalDate;
 import org.threeten.bp.OffsetDateTime;
 import javax.validation.Valid;
@@ -16,12 +18,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -47,14 +52,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -77,9 +82,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -99,9 +103,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -119,9 +122,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -141,11 +143,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -165,9 +164,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -187,9 +185,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -207,9 +204,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -227,10 +223,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -239,7 +233,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -248,15 +242,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -269,11 +261,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -291,10 +280,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -312,10 +299,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -333,10 +318,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -354,10 +337,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -366,7 +347,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -401,7 +381,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 055eaea6221..a6100dec7e6 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -32,9 +35,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -52,9 +54,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -63,7 +64,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -86,7 +86,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java
index 777ec8f061f..53e126c34fe 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MapTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -89,10 +92,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -118,9 +119,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -146,9 +146,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -174,9 +173,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -185,7 +183,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -210,7 +207,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 31f0e9691e4..68e45376819 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -11,23 +11,27 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -43,10 +47,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -64,10 +66,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -93,10 +93,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -105,7 +103,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -129,7 +126,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
index a523a095a0d..ff5f1cbfd76 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Model200Response.java
@@ -11,13 +11,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -33,9 +36,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -53,9 +55,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -64,7 +65,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
index e2c8aca9fcc..61fd70ab599 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -35,9 +38,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -55,9 +57,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -75,9 +76,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -86,7 +86,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -110,7 +109,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..52fa7ca1379
--- /dev/null
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..029b4bf191e
--- /dev/null
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,82 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
index 2887e82ae24..6e7190a8bb6 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ModelReturn.java
@@ -11,13 +11,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -30,9 +33,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -41,7 +43,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java
index e90e446667d..ac665b62dd9 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Name.java
@@ -11,13 +11,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -39,10 +42,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -60,9 +61,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -80,9 +80,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -100,9 +99,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -111,7 +109,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -136,7 +133,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
index e7453ce9262..ce78534bcf7 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/NumberOnly.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -30,10 +33,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -42,7 +43,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +64,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java
index d90339edc7e..a9627499bf7 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Order.java
@@ -7,18 +7,22 @@ import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import javax.validation.Valid;
 import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -29,7 +33,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -84,9 +88,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -104,9 +107,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -124,9 +126,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -144,10 +145,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -165,9 +164,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -185,9 +183,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -196,7 +193,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -223,7 +219,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
index 44d5a9dc16d..2300973669e 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterComposite.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -36,10 +39,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -57,9 +58,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -77,9 +77,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -88,7 +87,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +110,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
index 214947f375c..874cedf63cf 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/OuterEnum.java
@@ -8,6 +8,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -15,6 +16,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java
index 7c8eeae0204..90683df8d08 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Pet.java
@@ -19,12 +19,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -91,9 +94,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -111,10 +113,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -132,10 +132,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -161,10 +159,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -191,10 +187,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -212,9 +206,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -223,7 +216,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -250,7 +242,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index af3367a7ffc..a374f2899ff 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -32,9 +35,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -52,9 +54,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -63,7 +64,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -86,7 +86,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
index 6cde569d9c0..d9c67e23a77 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -29,9 +32,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -40,7 +42,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -62,7 +63,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java
index 219b5ef9b87..e24b0968e5c 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/Tag.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -32,9 +35,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -52,9 +54,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -63,7 +64,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -86,7 +86,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 5ddbf1ebca1..922da4c45a3 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -45,10 +48,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -66,11 +67,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -88,10 +86,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -109,10 +105,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -138,10 +132,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -150,7 +142,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -176,7 +167,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
index ad778640909..c090002fead 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -48,10 +51,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -69,11 +70,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -91,10 +89,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -112,10 +108,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -133,10 +127,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -162,10 +154,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -174,7 +164,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -201,7 +190,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java
index 6e56bc32a2e..f2b4ed4a98e 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/User.java
@@ -11,12 +11,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -50,9 +53,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -70,9 +72,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -90,9 +91,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -110,9 +110,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -130,9 +129,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -150,9 +148,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -170,9 +167,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -190,9 +186,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -201,7 +196,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -230,7 +224,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
index 621f973ebae..c9267532f45 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/src/main/java/org/openapitools/model/XmlItem.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -125,9 +128,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -145,10 +147,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -166,9 +166,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -186,9 +185,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -214,9 +212,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -234,9 +231,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -254,10 +250,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -275,9 +269,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -295,9 +288,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -323,9 +315,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -351,9 +342,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -371,9 +361,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -391,10 +380,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -412,9 +399,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -432,9 +418,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -460,9 +445,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -488,9 +472,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -508,9 +491,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -528,10 +510,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -549,9 +529,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -569,9 +548,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -597,9 +575,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -625,9 +602,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -645,9 +621,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -665,10 +640,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -686,9 +659,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -706,9 +678,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -734,9 +705,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -762,9 +732,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -773,7 +742,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -823,7 +791,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/.openapi-generator/FILES b/samples/server/petstore/springboot-beanvalidation/.openapi-generator/FILES
index e4c32719b54..6d8d3656155 100644
--- a/samples/server/petstore/springboot-beanvalidation/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-beanvalidation/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApi.java
index 6f95540156b..5b6d1540fd0 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApi.java
index 316f07e4484..de62ec85c83 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-beanvalidation/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/.openapi-generator/FILES b/samples/server/petstore/springboot-delegate-j8/.openapi-generator/FILES
index 9df6c44a321..bd5a0e2c057 100644
--- a/samples/server/petstore/springboot-delegate-j8/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-delegate-j8/.openapi-generator/FILES
@@ -47,6 +47,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -54,6 +55,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
index c257e392d8a..44242e9af9e 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index df11134c806..f57c395c28a 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new AnotherFakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index a86542ddf22..2d5e24bcd5f 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApi.java
index 0ea288f9728..39809f59213 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -25,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -315,8 +319,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiController.java
index 6b22c1aba66..501419787ef 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java
index d3a949e65d8..3796fc00ce5 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.HttpStatus;
@@ -19,12 +21,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 757dc764c97..9c20e7a6553 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 58497641e4c..0e301ab5f9b 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeClassnameTestApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index ed5a6bfc09a..fb689b13f94 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApi.java
index 0575088eb08..11c32c6641e 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
@@ -18,7 +19,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiController.java
index 5fa088c6f10..03b76f0b64b 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new PetApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiDelegate.java
index e3adc7d4bca..9c616c14aaa 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -2,6 +2,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -12,12 +13,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApi.java
index ee6e1fb2d91..c88eb0641a0 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApi.java
@@ -17,7 +17,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiController.java
index 9e08c646ae9..8209043ac02 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new StoreApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java
index dfe4bb31496..e9b7146b52a 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -11,12 +11,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApi.java
index 264279df93a..75d061e0e88 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApi.java
@@ -18,7 +18,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiController.java
index bc2d33598fd..82725d16025 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new UserApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiDelegate.java
index 2efbd71c9dc..c39231c6b29 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -12,12 +12,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-delegate-j8/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/.openapi-generator/FILES b/samples/server/petstore/springboot-delegate/.openapi-generator/FILES
index 9df6c44a321..bd5a0e2c057 100644
--- a/samples/server/petstore/springboot-delegate/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-delegate/.openapi-generator/FILES
@@ -47,6 +47,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -54,6 +55,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java
index c257e392d8a..44242e9af9e 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index df11134c806..f57c395c28a 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new AnotherFakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index a86542ddf22..2d5e24bcd5f 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java
index 0ea288f9728..39809f59213 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -25,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -315,8 +319,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java
index 6b22c1aba66..501419787ef 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java
index d3a949e65d8..3796fc00ce5 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.HttpStatus;
@@ -19,12 +21,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 757dc764c97..9c20e7a6553 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 58497641e4c..0e301ab5f9b 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeClassnameTestApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index ed5a6bfc09a..fb689b13f94 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java
index 0575088eb08..11c32c6641e 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
@@ -18,7 +19,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java
index 5fa088c6f10..03b76f0b64b 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new PetApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java
index e3adc7d4bca..9c616c14aaa 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -2,6 +2,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -12,12 +13,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java
index ee6e1fb2d91..c88eb0641a0 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApi.java
@@ -17,7 +17,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java
index 9e08c646ae9..8209043ac02 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new StoreApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java
index dfe4bb31496..e9b7146b52a 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -11,12 +11,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java
index 264279df93a..75d061e0e88 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApi.java
@@ -18,7 +18,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java
index bc2d33598fd..82725d16025 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new UserApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java
index 2efbd71c9dc..c39231c6b29 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -12,12 +12,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-delegate/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES b/samples/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES
index e4c32719b54..6d8d3656155 100644
--- a/samples/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-implicitHeaders/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 43a7fb5fc8c..096e7fbf0f5 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java
index ba1cf6d208f..324c59ed415 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -363,8 +367,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 6586cb13ebe..d75e7a82a97 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java
index 2dcbd379130..13a2df7806c 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java
index 352248a430c..901e27289cb 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java
index c4d2a0e29e4..f3e8787a41c 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-implicitHeaders/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/.openapi-generator/FILES b/samples/server/petstore/springboot-reactive/.openapi-generator/FILES
index 9df6c44a321..bd5a0e2c057 100644
--- a/samples/server/petstore/springboot-reactive/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-reactive/.openapi-generator/FILES
@@ -47,6 +47,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -54,6 +55,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-reactive/README.md b/samples/server/petstore/springboot-reactive/README.md
index 55dc732c1b0..b890fea0936 100644
--- a/samples/server/petstore/springboot-reactive/README.md
+++ b/samples/server/petstore/springboot-reactive/README.md
@@ -8,6 +8,8 @@ This server was generated by the [OpenAPI Generator](https://openapi-generator.t
 By using the [OpenAPI-Spec](https://openapis.org), you can easily generate a server stub.
 This is an example of building a OpenAPI-enabled server in Java using the SpringBoot framework.
 
+The underlying library integrating OpenAPI to SpringBoot is [springfox](https://github.com/springfox/springfox)
+
 Start your server as a simple java application
 
 Change default port value in application.properties
\ No newline at end of file
diff --git a/samples/server/petstore/springboot-reactive/pom.xml b/samples/server/petstore/springboot-reactive/pom.xml
index 6f5e06c6e29..d543d710035 100644
--- a/samples/server/petstore/springboot-reactive/pom.xml
+++ b/samples/server/petstore/springboot-reactive/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <swagger-core-version>1.6.3</swagger-core-version>
+        <springfox.version>2.9.2</springfox.version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -34,10 +34,11 @@
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-commons</artifactId>
         </dependency>
+        <!--SpringFox dependencies -->
         <dependency>
-            <groupId>io.swagger</groupId>
-            <artifactId>swagger-annotations</artifactId>
-            <version>${swagger-core-version}</version>
+            <groupId>io.springfox</groupId>
+            <artifactId>springfox-swagger2</artifactId>
+            <version>${springfox.version}</version>
         </dependency>
         <!-- @Nullable annotation -->
         <dependency>
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/OpenAPI2SpringBoot.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
index 254af022514..a7a2c4e7dc4 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/OpenAPI2SpringBoot.java
@@ -9,7 +9,6 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.web.reactive.config.CorsRegistry;
-import org.springframework.web.reactive.config.ResourceHandlerRegistry;
 import org.springframework.web.reactive.config.WebFluxConfigurer;
 
 @SpringBootApplication
@@ -47,11 +46,6 @@ public class OpenAPI2SpringBoot implements CommandLineRunner {
                         .allowedMethods("*")
                         .allowedHeaders("Content-Type");
             }*/
-
-            @Override
-            public void addResourceHandlers(ResourceHandlerRegistry registry) {
-                registry.addResourceHandler("/swagger-ui/**").addResourceLocations("classpath:/META-INF/resources/webjars/swagger-ui/3.14.2/");
-            }
         };
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 1768ee5a3c2..0d4865a9f85 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -5,6 +5,7 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.Client;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
@@ -20,7 +21,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
@@ -54,7 +57,7 @@ public interface AnotherFakeApi {
     )
     default Mono<ResponseEntity<Client>> call123testSpecialTags(
         @ApiParam(value = "client model", required = true) @Valid @RequestBody Mono<Client> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().call123testSpecialTags(body, exchange);
     }
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index df11134c806..f57c395c28a 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new AnotherFakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index 2ef11c811c1..c05f795e57b 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.Client;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -14,12 +15,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java
index a0f7b30618a..a396b9a56e6 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApi.java
@@ -5,14 +5,17 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +32,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -61,7 +66,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<Void>> createXmlItem(
         @ApiParam(value = "XmlItem Body", required = true) @Valid @RequestBody Mono<XmlItem> xmlItem,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().createXmlItem(xmlItem, exchange);
     }
@@ -91,7 +96,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<Boolean>> fakeOuterBooleanSerialize(
         @ApiParam(value = "Input boolean as post body") @Valid @RequestBody(required = false) Mono<Boolean> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().fakeOuterBooleanSerialize(body, exchange);
     }
@@ -121,7 +126,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<OuterComposite>> fakeOuterCompositeSerialize(
         @ApiParam(value = "Input composite as post body") @Valid @RequestBody(required = false) Mono<OuterComposite> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().fakeOuterCompositeSerialize(body, exchange);
     }
@@ -151,7 +156,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<BigDecimal>> fakeOuterNumberSerialize(
         @ApiParam(value = "Input number as post body") @Valid @RequestBody(required = false) Mono<BigDecimal> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().fakeOuterNumberSerialize(body, exchange);
     }
@@ -181,7 +186,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<String>> fakeOuterStringSerialize(
         @ApiParam(value = "Input string as post body") @Valid @RequestBody(required = false) Mono<String> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().fakeOuterStringSerialize(body, exchange);
     }
@@ -210,7 +215,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<Void>> testBodyWithFileSchema(
         @ApiParam(value = "", required = true) @Valid @RequestBody Mono<FileSchemaTestClass> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testBodyWithFileSchema(body, exchange);
     }
@@ -240,7 +245,7 @@ public interface FakeApi {
     default Mono<ResponseEntity<Void>> testBodyWithQueryParams(
         @NotNull @ApiParam(value = "", required = true) @Valid @RequestParam(value = "query", required = true) String query,
         @ApiParam(value = "", required = true) @Valid @RequestBody Mono<User> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testBodyWithQueryParams(query, body, exchange);
     }
@@ -271,7 +276,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<Client>> testClientModel(
         @ApiParam(value = "client model", required = true) @Valid @RequestBody Mono<Client> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testClientModel(body, exchange);
     }
@@ -327,11 +332,11 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) Flux<Part> binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testEndpointParameters(number, _double, patternWithoutDelimiter, _byte, integer, int32, int64, _float, string, binary, date, dateTime, password, paramCallback, exchange);
     }
@@ -376,7 +381,7 @@ public interface FakeApi {
         @ApiParam(value = "Query parameter enum test (double)", allowableValues = "1.1, -1.2") @Valid @RequestParam(value = "enum_query_double", required = false) Double enumQueryDouble,
         @ApiParam(value = "Form parameter enum test (string array)", allowableValues = ">, $") @Valid @RequestPart(value = "enum_form_string_array", required = false) List<String> enumFormStringArray,
         @ApiParam(value = "Form parameter enum test (string)", allowableValues = "_abc, -efg, (xyz)", defaultValue = "-efg") @Valid @RequestPart(value = "enum_form_string", required = false) String enumFormString,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testEnumParameters(enumHeaderStringArray, enumHeaderString, enumQueryStringArray, enumQueryString, enumQueryInteger, enumQueryDouble, enumFormStringArray, enumFormString, exchange);
     }
@@ -414,7 +419,7 @@ public interface FakeApi {
         @ApiParam(value = "String in group parameters") @Valid @RequestParam(value = "string_group", required = false) Integer stringGroup,
         @ApiParam(value = "Boolean in group parameters") @RequestHeader(value = "boolean_group", required = false) Boolean booleanGroup,
         @ApiParam(value = "Integer in group parameters") @Valid @RequestParam(value = "int64_group", required = false) Long int64Group,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testGroupParameters(requiredStringGroup, requiredBooleanGroup, requiredInt64Group, stringGroup, booleanGroup, int64Group, exchange);
     }
@@ -442,7 +447,7 @@ public interface FakeApi {
     )
     default Mono<ResponseEntity<Void>> testInlineAdditionalProperties(
         @ApiParam(value = "request body", required = true) @Valid @RequestBody Mono<Map<String, String>> param,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testInlineAdditionalProperties(param, exchange);
     }
@@ -472,7 +477,7 @@ public interface FakeApi {
     default Mono<ResponseEntity<Void>> testJsonFormData(
         @ApiParam(value = "field1", required = true) @Valid @RequestPart(value = "param", required = true) String param,
         @ApiParam(value = "field2", required = true) @Valid @RequestPart(value = "param2", required = true) String param2,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testJsonFormData(param, param2, exchange);
     }
@@ -508,7 +513,7 @@ public interface FakeApi {
         @NotNull @ApiParam(value = "", required = true) @Valid @RequestParam(value = "http", required = true) List<String> http,
         @NotNull @ApiParam(value = "", required = true) @Valid @RequestParam(value = "url", required = true) List<String> url,
         @NotNull @ApiParam(value = "", required = true) @Valid @RequestParam(value = "context", required = true) List<String> context,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testQueryParameterCollectionFormat(pipe, ioutil, http, url, context, exchange);
     }
@@ -548,7 +553,7 @@ public interface FakeApi {
         @ApiParam(value = "ID of pet to update", required = true) @PathVariable("petId") Long petId,
         @ApiParam(value = "file to upload", required = true) @RequestPart(value = "requiredFile", required = true) Flux<Part> requiredFile,
         @ApiParam(value = "Additional data to pass to server") @Valid @RequestPart(value = "additionalMetadata", required = false) String additionalMetadata,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().uploadFileWithRequiredFile(petId, requiredFile, additionalMetadata, exchange);
     }
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java
index 6b22c1aba66..501419787ef 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java
index dbe78fa1c7f..f6d86d18abc 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -1,13 +1,16 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.HttpStatus;
@@ -23,12 +26,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 60bad223e04..d7d38182fd5 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -5,6 +5,7 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.Client;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
@@ -20,7 +21,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
@@ -57,7 +60,7 @@ public interface FakeClassnameTestApi {
     )
     default Mono<ResponseEntity<Client>> testClassname(
         @ApiParam(value = "client model", required = true) @Valid @RequestBody Mono<Client> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().testClassname(body, exchange);
     }
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 58497641e4c..0e301ab5f9b 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeClassnameTestApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index 4127d96d9e3..527bedeecf9 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.Client;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -14,12 +15,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java
index f65a81e173e..b6be5504a5a 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,10 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
@@ -22,7 +24,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
@@ -61,7 +65,7 @@ public interface PetApi {
     )
     default Mono<ResponseEntity<Void>> addPet(
         @ApiParam(value = "Pet object that needs to be added to the store", required = true) @Valid @RequestBody Mono<Pet> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().addPet(body, exchange);
     }
@@ -98,7 +102,7 @@ public interface PetApi {
     default Mono<ResponseEntity<Void>> deletePet(
         @ApiParam(value = "Pet id to delete", required = true) @PathVariable("petId") Long petId,
         @ApiParam(value = "") @RequestHeader(value = "api_key", required = false) String apiKey,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().deletePet(petId, apiKey, exchange);
     }
@@ -137,7 +141,7 @@ public interface PetApi {
     )
     default Mono<ResponseEntity<Flux<Pet>>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().findPetsByStatus(status, exchange);
     }
@@ -177,7 +181,7 @@ public interface PetApi {
     )
     default Mono<ResponseEntity<Flux<Pet>>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) Set<String> tags,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().findPetsByTags(tags, exchange);
     }
@@ -214,7 +218,7 @@ public interface PetApi {
     )
     default Mono<ResponseEntity<Pet>> getPetById(
         @ApiParam(value = "ID of pet to return", required = true) @PathVariable("petId") Long petId,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().getPetById(petId, exchange);
     }
@@ -254,7 +258,7 @@ public interface PetApi {
     )
     default Mono<ResponseEntity<Void>> updatePet(
         @ApiParam(value = "Pet object that needs to be added to the store", required = true) @Valid @RequestBody Mono<Pet> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().updatePet(body, exchange);
     }
@@ -292,7 +296,7 @@ public interface PetApi {
         @ApiParam(value = "ID of pet that needs to be updated", required = true) @PathVariable("petId") Long petId,
         @ApiParam(value = "Updated name of the pet") @Valid @RequestPart(value = "name", required = false) String name,
         @ApiParam(value = "Updated status of the pet") @Valid @RequestPart(value = "status", required = false) String status,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().updatePetWithForm(petId, name, status, exchange);
     }
@@ -332,7 +336,7 @@ public interface PetApi {
         @ApiParam(value = "ID of pet to update", required = true) @PathVariable("petId") Long petId,
         @ApiParam(value = "Additional data to pass to server") @Valid @RequestPart(value = "additionalMetadata", required = false) String additionalMetadata,
         @ApiParam(value = "file to upload") @RequestPart(value = "file", required = false) Flux<Part> file,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().uploadFile(petId, additionalMetadata, file, exchange);
     }
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java
index 5fa088c6f10..03b76f0b64b 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new PetApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java
index 8dc1be776ea..abdf3efc621 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -1,7 +1,9 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -16,12 +18,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java
index 9de6b5365ae..7346ec453f3 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApi.java
@@ -5,6 +5,7 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import java.util.Map;
 import org.openapitools.model.Order;
 import io.swagger.annotations.*;
@@ -21,7 +22,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
@@ -54,7 +57,7 @@ public interface StoreApi {
     )
     default Mono<ResponseEntity<Void>> deleteOrder(
         @ApiParam(value = "ID of the order that needs to be deleted", required = true) @PathVariable("order_id") String orderId,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().deleteOrder(orderId, exchange);
     }
@@ -86,7 +89,7 @@ public interface StoreApi {
         produces = { "application/json" }
     )
     default Mono<ResponseEntity<Map<String, Integer>>> getInventory(
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().getInventory(exchange);
     }
@@ -120,7 +123,7 @@ public interface StoreApi {
     )
     default Mono<ResponseEntity<Order>> getOrderById(
         @Min(1L) @Max(5L) @ApiParam(value = "ID of pet that needs to be fetched", required = true) @PathVariable("order_id") Long orderId,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().getOrderById(orderId, exchange);
     }
@@ -151,7 +154,7 @@ public interface StoreApi {
     )
     default Mono<ResponseEntity<Order>> placeOrder(
         @ApiParam(value = "order placed for purchasing the pet", required = true) @Valid @RequestBody Mono<Order> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().placeOrder(body, exchange);
     }
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java
index 9e08c646ae9..8209043ac02 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new StoreApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java
index 02daadf024a..ecc745c202f 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import java.util.Map;
 import org.openapitools.model.Order;
 import org.springframework.http.HttpStatus;
@@ -15,12 +16,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java
index 9c1beb7f038..982ade54802 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApi.java
@@ -5,6 +5,7 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import java.util.List;
 import java.time.OffsetDateTime;
 import org.openapitools.model.User;
@@ -22,7 +23,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
@@ -53,7 +56,7 @@ public interface UserApi {
     )
     default Mono<ResponseEntity<Void>> createUser(
         @ApiParam(value = "Created user object", required = true) @Valid @RequestBody Mono<User> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().createUser(body, exchange);
     }
@@ -80,7 +83,7 @@ public interface UserApi {
     )
     default Mono<ResponseEntity<Void>> createUsersWithArrayInput(
         @ApiParam(value = "List of user object", required = true) @Valid @RequestBody Flux<User> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().createUsersWithArrayInput(body, exchange);
     }
@@ -107,7 +110,7 @@ public interface UserApi {
     )
     default Mono<ResponseEntity<Void>> createUsersWithListInput(
         @ApiParam(value = "List of user object", required = true) @Valid @RequestBody Flux<User> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().createUsersWithListInput(body, exchange);
     }
@@ -137,7 +140,7 @@ public interface UserApi {
     )
     default Mono<ResponseEntity<Void>> deleteUser(
         @ApiParam(value = "The name that needs to be deleted", required = true) @PathVariable("username") String username,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().deleteUser(username, exchange);
     }
@@ -170,7 +173,7 @@ public interface UserApi {
     )
     default Mono<ResponseEntity<User>> getUserByName(
         @ApiParam(value = "The name that needs to be fetched. Use user1 for testing.", required = true) @PathVariable("username") String username,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().getUserByName(username, exchange);
     }
@@ -203,7 +206,7 @@ public interface UserApi {
     default Mono<ResponseEntity<String>> loginUser(
         @NotNull @ApiParam(value = "The user name for login", required = true) @Valid @RequestParam(value = "username", required = true) String username,
         @NotNull @ApiParam(value = "The password for login in clear text", required = true) @Valid @RequestParam(value = "password", required = true) String password,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().loginUser(username, password, exchange);
     }
@@ -228,7 +231,7 @@ public interface UserApi {
         value = "/user/logout"
     )
     default Mono<ResponseEntity<Void>> logoutUser(
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().logoutUser(exchange);
     }
@@ -260,7 +263,7 @@ public interface UserApi {
     default Mono<ResponseEntity<Void>> updateUser(
         @ApiParam(value = "name that need to be deleted", required = true) @PathVariable("username") String username,
         @ApiParam(value = "Updated user object", required = true) @Valid @RequestBody Mono<User> body,
-         final ServerWebExchange exchange
+        @ApiIgnore final ServerWebExchange exchange
     ) {
         return getDelegate().updateUser(username, body, exchange);
     }
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java
index bc2d33598fd..82725d16025 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new UserApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java
index 3985dd30ecd..3e561778a3e 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -1,5 +1,6 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import java.util.List;
 import java.time.OffsetDateTime;
 import org.openapitools.model.User;
@@ -16,12 +17,13 @@ import org.springframework.http.codec.multipart.Part;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java
index b1e5bfc21ee..60a69461eb5 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/configuration/HomeController.java
@@ -1,21 +1,12 @@
 package org.openapitools.configuration;
 
-import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.context.annotation.Bean;
-import org.springframework.core.io.Resource;
 import org.springframework.stereotype.Controller;
-import org.springframework.util.StreamUtils;
-import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.context.annotation.Bean;
 import org.springframework.web.reactive.function.server.RouterFunction;
 import org.springframework.web.reactive.function.server.ServerResponse;
 
-import java.io.IOException;
-import java.io.InputStream;
 import java.net.URI;
-import java.nio.charset.Charset;
 
 import static org.springframework.web.reactive.function.server.RequestPredicates.GET;
 import static org.springframework.web.reactive.function.server.RouterFunctions.route;
@@ -26,35 +17,11 @@ import static org.springframework.web.reactive.function.server.RouterFunctions.r
 @Controller
 public class HomeController {
 
-    private static YAMLMapper yamlMapper = new YAMLMapper();
-
-    @Value("classpath:/openapi.yaml")
-    private Resource openapi;
-
-    @Bean
-    public String openapiContent() throws IOException {
-        try(InputStream is = openapi.getInputStream()) {
-            return StreamUtils.copyToString(is, Charset.defaultCharset());
-        }
-    }
-
-    @GetMapping(value = "/openapi.yaml", produces = "application/vnd.oai.openapi")
-    @ResponseBody
-    public String openapiYaml() throws IOException {
-        return openapiContent();
-    }
-
-    @GetMapping(value = "/openapi.json", produces = "application/json")
-    @ResponseBody
-    public Object openapiJson() throws IOException {
-        return yamlMapper.readValue(openapiContent(), Object.class);
-    }
-
     @Bean
     RouterFunction<ServerResponse> index() {
         return route(
             GET("/"),
-            req -> ServerResponse.temporaryRedirect(URI.create("swagger-ui/index.html?url=../openapi.json")).build()
+            req -> ServerResponse.temporaryRedirect(URI.create("swagger-ui.html")).build()
         );
     }
 
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-reactive/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-reactive/src/main/resources/application.properties b/samples/server/petstore/springboot-reactive/src/main/resources/application.properties
index 9d06609db66..ceca4a9e0d0 100644
--- a/samples/server/petstore/springboot-reactive/src/main/resources/application.properties
+++ b/samples/server/petstore/springboot-reactive/src/main/resources/application.properties
@@ -1,3 +1,4 @@
+springfox.documentation.swagger.v2.path=/api-docs
 server.port=80
 spring.jackson.date-format=org.openapitools.RFC3339DateFormat
 spring.jackson.serialization.WRITE_DATES_AS_TIMESTAMPS=false
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/.openapi-generator/FILES b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/.openapi-generator/FILES
index 521670b5356..e44445556a9 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/.openapi-generator/FILES
@@ -47,6 +47,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -54,6 +55,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
index f510b794734..eb4ea771ca4 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index f1ca88a6a5e..7ae394a6c74 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -1,7 +1,6 @@
 package org.openapitools.api;
 
 import org.openapitools.model.Client;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -13,20 +12,23 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = delegate;
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index 17244270c85..0e0027d4bc3 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -6,12 +6,13 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 import java.util.Map;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     /**
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApi.java
index 14646bf0560..e92d6f5f725 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -25,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -295,8 +299,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     );
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiController.java
index 76cc2bb9575..a9830bcc648 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,16 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -22,20 +23,23 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = delegate;
     }
 
@@ -185,8 +189,8 @@ public class FakeApiController implements FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java
index e88b7aa6ca5..717b8a75310 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.ResponseEntity;
@@ -15,12 +17,13 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 import java.util.Map;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     /**
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index fc833265a31..3b56b4e43b2 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 65de19a78d3..477a1180d78 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -1,7 +1,6 @@
 package org.openapitools.api;
 
 import org.openapitools.model.Client;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -13,20 +12,23 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = delegate;
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index 31b94ac1095..414a09aed4e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -6,12 +6,13 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 import java.util.Map;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     /**
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApi.java
index a9dfd394670..46f90de340b 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,11 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
 import org.springframework.validation.annotation.Validated;
@@ -17,7 +20,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
@@ -122,7 +127,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     );
 
 
@@ -160,7 +165,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     );
 
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiController.java
index 5583546f3e5..78913cd2534 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiController.java
@@ -1,8 +1,10 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
-import io.swagger.annotations.*;
+import org.springframework.core.io.Resource;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -14,20 +16,23 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = delegate;
     }
 
@@ -72,7 +77,7 @@ public class PetApiController implements PetApi {
      */
     public ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         return delegate.findPetsByStatus(status, pageable);
     }
@@ -89,7 +94,7 @@ public class PetApiController implements PetApi {
      */
     public ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         return delegate.findPetsByTags(tags, pageable);
     }
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiDelegate.java
index 94d3c58d332..2537ce30da0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -1,18 +1,22 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 import java.util.Map;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     /**
@@ -46,7 +50,7 @@ public interface PetApiDelegate {
      *         or Invalid status value (status code 400)
      * @see PetApi#findPetsByStatus
      */
-    ResponseEntity<List<Pet>> findPetsByStatus(List<String> status, final org.springframework.data.domain.Pageable pageable);
+    ResponseEntity<List<Pet>> findPetsByStatus(List<String> status, final Pageable pageable);
 
     /**
      * GET /pet/findByTags : Finds Pets by tags
@@ -58,7 +62,7 @@ public interface PetApiDelegate {
      * @deprecated
      * @see PetApi#findPetsByTags
      */
-    ResponseEntity<List<Pet>> findPetsByTags(List<String> tags, final org.springframework.data.domain.Pageable pageable);
+    ResponseEntity<List<Pet>> findPetsByTags(List<String> tags, final Pageable pageable);
 
     /**
      * GET /pet/{petId} : Find pet by ID
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApi.java
index cbf52ad0992..cc7e38fb9da 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApi.java
@@ -17,7 +17,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiController.java
index 3becdad6f4a..8fd7fe5fa87 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,7 +2,6 @@ package org.openapitools.api;
 
 import java.util.Map;
 import org.openapitools.model.Order;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -14,20 +13,23 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = delegate;
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java
index a6ad2c60995..5d4bde80620 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -7,12 +7,13 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 import java.util.Map;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     /**
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApi.java
index 20584092897..5560ddc4ced 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApi.java
@@ -18,7 +18,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiController.java
index a9721c9a469..3bc638dbeb9 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiController.java
@@ -3,7 +3,6 @@ package org.openapitools.api;
 import java.util.List;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.User;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -15,20 +14,23 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.multipart.MultipartFile;
 
 import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = delegate;
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiDelegate.java
index f41ca92fd59..f1d806c05fd 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -8,12 +8,13 @@ import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
 import java.util.Map;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     /**
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 46281c6456d..2874aee40b5 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 474278b1b19..303eb0c55db 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index c670f89cdfc..1cac5fc9adc 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 9f89c16c1bc..167352b3656 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5ef4af43bbd..faeaecb95cd 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 95a74229727..522c7e8dda0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 9969c2fe720..617d4fb867f 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 757c0a536fd..74e04286771 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Animal.java
index 22249d7cc27..4bdbbcad59d 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Animal.java
@@ -14,18 +14,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -41,10 +43,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -62,9 +62,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -73,7 +72,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -96,7 +94,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 995bebadda8..622be10459e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 922dc7a5666..b0eb6b00dd7 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayTest.java
index 6937756d45c..8f34930a5e8 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Capitalization.java
index 19ab1f8baff..60748a7366a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Cat.java
index ebf9c7cec80..9fd111c8430 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/CatAllOf.java
index 257322699ab..8e08090e24a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Category.java
index 3c2a6be2b25..06d98844c50 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ClassModel.java
index 4d88c1e45a8..2bffe7eecb0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Client.java
index bb63f835363..9bc13add64a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Dog.java
index 21a27eb4e45..daf01294455 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/DogAllOf.java
index 09bb08f9458..6792f7900e9 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumArrays.java
index 14bf9e2c281..aacc863a201 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumClass.java
index ed676c3662e..233a854ff58 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumClass.java
@@ -9,6 +9,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumTest.java
index 3a9a9e85a8c..cf2427d7be1 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..baed9c12618
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 3d885b7876d..1d839540169 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,26 +40,24 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<File>();
     }
     this.files.add(filesItem);
     return this;
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FormatTest.java
index 7f83ebda6cb..d44579f78f9 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import io.swagger.annotations.ApiModelProperty;
 import java.math.BigDecimal;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.LocalDate;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -17,12 +19,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index a712d19243f..001a3cea286 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MapTest.java
index a4f10eadf35..d9bc6491e74 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index b6607ec1de2..a3e6d4338bf 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -11,6 +11,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.jackson.nullable.JsonNullable;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Model200Response.java
index 8e51dc7b0bf..a308820b4be 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
index 1c50e0984df..a932355454b 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d31f39a5bf1
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..55133349d68
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelReturn.java
index f71f60f5970..2c67234126d 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Name.java
index 8336bed2c94..96cadd49736 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/NumberOnly.java
index 87c0551edfc..4ed41292ec0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Order.java
index c03246a0acb..6c5cc6ed8b2 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Order.java
@@ -7,6 +7,7 @@ import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.jackson.nullable.JsonNullable;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterComposite.java
index 34098a524fc..2fa1e8576af 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterEnum.java
index 33f64f0954e..542939a2a63 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/OuterEnum.java
@@ -9,6 +9,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Pet.java
index 8e56b7045ab..1a4e757a147 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Pet.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -89,9 +92,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -109,10 +111,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -130,10 +130,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -156,10 +154,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -185,10 +181,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -206,9 +200,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -217,7 +210,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -244,7 +236,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 655154d2cf2..5cf483cb584 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java
index beddd922ad4..6f360adf416 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Tag.java
index c7dba2565ee..0131b8854d8 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 9dbb6eeeb09..66adede6dd1 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
index 998c11fb323..b03cc5c37ec 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/User.java
index ac48b7bd3ac..f443caa28bf 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/XmlItem.java
index fa83623c4bf..4c6f7d42bd9 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern-without-j8/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/.openapi-generator/FILES b/samples/server/petstore/springboot-spring-pageable-delegatePattern/.openapi-generator/FILES
index 31af355960d..e5358dc21c3 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/.openapi-generator/FILES
@@ -45,6 +45,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -52,6 +53,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApi.java
index c257e392d8a..44242e9af9e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index df11134c806..f57c395c28a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final AnotherFakeApiDelegate delegate;
 
-    public AnotherFakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) AnotherFakeApiDelegate delegate) {
+    public AnotherFakeApiController(@Autowired(required = false) AnotherFakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new AnotherFakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
index a86542ddf22..2d5e24bcd5f 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/AnotherFakeApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link AnotherFakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface AnotherFakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApi.java
index 95f16c94409..a5597a12169 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -25,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -315,8 +319,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiController.java
index 6b22c1aba66..501419787ef 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final FakeApiDelegate delegate;
 
-    public FakeApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeApiDelegate delegate) {
+    public FakeApiController(@Autowired(required = false) FakeApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiDelegate.java
index de03df40267..b8e9dd88d45 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeApiDelegate.java
@@ -2,12 +2,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import org.springframework.http.HttpStatus;
@@ -19,12 +21,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 757dc764c97..9c20e7a6553 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 58497641e4c..0e301ab5f9b 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final FakeClassnameTestApiDelegate delegate;
 
-    public FakeClassnameTestApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
+    public FakeClassnameTestApiController(@Autowired(required = false) FakeClassnameTestApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new FakeClassnameTestApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
index ed5a6bfc09a..fb689b13f94 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/FakeClassnameTestApiDelegate.java
@@ -10,12 +10,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link FakeClassnameTestApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface FakeClassnameTestApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApi.java
index 05b00c66fde..3a412effcb0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,11 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
 import org.springframework.validation.annotation.Validated;
@@ -17,7 +20,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
@@ -130,7 +135,7 @@ public interface PetApi {
     )
     default ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         return getDelegate().findPetsByStatus(status, pageable);
     }
@@ -170,7 +175,7 @@ public interface PetApi {
     )
     default ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         return getDelegate().findPetsByTags(tags, pageable);
     }
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiController.java
index 5fa088c6f10..03b76f0b64b 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final PetApiDelegate delegate;
 
-    public PetApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) PetApiDelegate delegate) {
+    public PetApiController(@Autowired(required = false) PetApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new PetApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiDelegate.java
index 02d3eee8e53..2fa88df6b0c 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/PetApiDelegate.java
@@ -1,7 +1,10 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -11,12 +14,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link PetApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface PetApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
@@ -60,7 +64,7 @@ public interface PetApiDelegate {
      *         or Invalid status value (status code 400)
      * @see PetApi#findPetsByStatus
      */
-    default ResponseEntity<List<Pet>> findPetsByStatus(List<String> status, final org.springframework.data.domain.Pageable pageable) {
+    default ResponseEntity<List<Pet>> findPetsByStatus(List<String> status, final Pageable pageable) {
         getRequest().ifPresent(request -> {
             for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
                 if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
@@ -89,7 +93,7 @@ public interface PetApiDelegate {
      * @deprecated
      * @see PetApi#findPetsByTags
      */
-    default ResponseEntity<List<Pet>> findPetsByTags(List<String> tags, final org.springframework.data.domain.Pageable pageable) {
+    default ResponseEntity<List<Pet>> findPetsByTags(List<String> tags, final Pageable pageable) {
         getRequest().ifPresent(request -> {
             for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
                 if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApi.java
index ee6e1fb2d91..c88eb0641a0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApi.java
@@ -17,7 +17,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiController.java
index 9e08c646ae9..8209043ac02 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final StoreApiDelegate delegate;
 
-    public StoreApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) StoreApiDelegate delegate) {
+    public StoreApiController(@Autowired(required = false) StoreApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new StoreApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiDelegate.java
index dfe4bb31496..e9b7146b52a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/StoreApiDelegate.java
@@ -11,12 +11,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link StoreApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface StoreApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApi.java
index 264279df93a..75d061e0e88 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApi.java
@@ -18,7 +18,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiController.java
index bc2d33598fd..82725d16025 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,15 +2,18 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final UserApiDelegate delegate;
 
-    public UserApiController(@org.springframework.beans.factory.annotation.Autowired(required = false) UserApiDelegate delegate) {
+    public UserApiController(@Autowired(required = false) UserApiDelegate delegate) {
         this.delegate = Optional.ofNullable(delegate).orElse(new UserApiDelegate() {});
     }
 
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiDelegate.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiDelegate.java
index 2efbd71c9dc..c39231c6b29 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiDelegate.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/api/UserApiDelegate.java
@@ -12,12 +12,13 @@ import org.springframework.web.multipart.MultipartFile;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import javax.annotation.Generated;
 
 /**
  * A delegate to be called by the {@link UserApiController}}.
  * Implement this interface with a {@link org.springframework.stereotype.Service} annotated class.
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public interface UserApiDelegate {
 
     default Optional<NativeWebRequest> getRequest() {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Animal.java
index db4f29350de..1dc5fc69c61 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Animal.java
@@ -15,18 +15,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Pet.java
index 729ef7defa5..d330c28e679 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Pet.java
@@ -18,12 +18,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-spring-pageable-delegatePattern/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/.openapi-generator/FILES b/samples/server/petstore/springboot-spring-pageable-without-j8/.openapi-generator/FILES
index c314c6a9a0f..e3f3b5ffeda 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
index f510b794734..eb4ea771ca4 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index e8f022846bf..ec8ea57868a 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -1,7 +1,6 @@
 package org.openapitools.api;
 
 import org.openapitools.model.Client;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -13,6 +12,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -20,14 +20,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApi.java
index 14646bf0560..e92d6f5f725 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -25,7 +27,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -295,8 +299,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     );
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApiController.java
index 9a5306056e8..848fe0e982f 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,15 +2,16 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import org.threeten.bp.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -22,6 +23,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -29,14 +31,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
@@ -209,8 +213,8 @@ public class FakeApiController implements FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index fc833265a31..3b56b4e43b2 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -16,7 +16,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index b705c60d83b..64dd84c74f4 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -1,7 +1,6 @@
 package org.openapitools.api;
 
 import org.openapitools.model.Client;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -13,6 +12,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -20,14 +20,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApi.java
index a9dfd394670..46f90de340b 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,11 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.ResponseEntity;
 import org.springframework.validation.annotation.Validated;
@@ -17,7 +20,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
@@ -122,7 +127,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     );
 
 
@@ -160,7 +165,7 @@ public interface PetApi {
     )
     ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     );
 
 
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApiController.java
index 32b8031cf83..8e3fd4cebff 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/PetApiController.java
@@ -1,8 +1,10 @@
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
-import io.swagger.annotations.*;
+import org.springframework.core.io.Resource;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -14,6 +16,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -21,14 +24,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
@@ -76,7 +81,7 @@ public class PetApiController implements PetApi {
      */
     public ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
             if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
@@ -106,7 +111,7 @@ public class PetApiController implements PetApi {
      */
     public ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
             if (mediaType.isCompatibleWith(MediaType.valueOf("application/json"))) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApi.java
index cbf52ad0992..cc7e38fb9da 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApi.java
@@ -17,7 +17,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApiController.java
index 203faf80f73..021d8d71835 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,7 +2,6 @@ package org.openapitools.api;
 
 import java.util.Map;
 import org.openapitools.model.Order;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -14,6 +13,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -21,14 +21,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApi.java
index 20584092897..5560ddc4ced 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApi.java
@@ -18,7 +18,9 @@ import javax.validation.Valid;
 import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApiController.java
index 224d437db48..e7253850462 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/api/UserApiController.java
@@ -3,7 +3,6 @@ package org.openapitools.api;
 import java.util.List;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.model.User;
-import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -15,6 +14,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.CookieValue;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -22,14 +22,16 @@ import javax.validation.constraints.*;
 import javax.validation.Valid;
 import java.util.List;
 import java.util.Map;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 46281c6456d..2874aee40b5 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 474278b1b19..303eb0c55db 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index c670f89cdfc..1cac5fc9adc 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 9f89c16c1bc..167352b3656 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -80,9 +83,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -108,10 +110,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -137,9 +137,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -165,9 +164,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -193,10 +191,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -222,10 +218,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -251,10 +245,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -280,10 +272,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -301,9 +291,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -321,9 +310,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -341,9 +329,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -352,7 +339,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -384,7 +370,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 5ef4af43bbd..faeaecb95cd 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 95a74229727..522c7e8dda0 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 9969c2fe720..617d4fb867f 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 757c0a536fd..74e04286771 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -32,9 +35,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -43,7 +45,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Animal.java
index 22249d7cc27..4bdbbcad59d 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Animal.java
@@ -14,18 +14,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -41,10 +43,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -62,9 +62,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -73,7 +72,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -96,7 +94,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index 995bebadda8..622be10459e 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index 922dc7a5666..b0eb6b00dd7 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -42,10 +45,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -54,7 +55,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -76,7 +76,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayTest.java
index 6937756d45c..8f34930a5e8 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ArrayTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -50,9 +53,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -78,10 +80,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -107,10 +107,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -119,7 +117,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -143,7 +140,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Capitalization.java
index 19ab1f8baff..60748a7366a 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Capitalization.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -45,9 +48,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -65,9 +67,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -85,9 +86,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -105,9 +105,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -125,9 +124,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -145,9 +143,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -156,7 +153,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -183,7 +179,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Cat.java
index ebf9c7cec80..9fd111c8430 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Cat.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -32,9 +35,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -43,7 +45,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/CatAllOf.java
index 257322699ab..8e08090e24a 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/CatAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -30,9 +33,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -41,7 +43,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Category.java
index 3c2a6be2b25..06d98844c50 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Category.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -53,10 +55,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +65,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +87,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ClassModel.java
index 4d88c1e45a8..2bffe7eecb0 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ClassModel.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -31,9 +34,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -42,7 +44,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Client.java
index bb63f835363..9bc13add64a 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Client.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -30,9 +33,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -41,7 +43,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Dog.java
index 21a27eb4e45..daf01294455 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Dog.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -32,9 +35,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -43,7 +45,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/DogAllOf.java
index 09bb08f9458..6792f7900e9 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/DogAllOf.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -30,9 +33,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -41,7 +43,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumArrays.java
index 14bf9e2c281..aacc863a201 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumArrays.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -107,9 +110,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -135,9 +137,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -146,7 +147,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -169,7 +169,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumClass.java
index ed676c3662e..233a854ff58 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumClass.java
@@ -9,6 +9,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumTest.java
index 3a9a9e85a8c..cf2427d7be1 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/EnumTest.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -188,9 +191,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -208,10 +210,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -229,9 +229,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -249,9 +248,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -269,10 +267,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -281,7 +277,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -307,7 +302,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..baed9c12618
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index 3d885b7876d..1d839540169 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -14,20 +15,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -36,26 +40,24 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
-      this.files = new ArrayList<java.io.File>();
+      this.files = new ArrayList<File>();
     }
     this.files.add(filesItem);
     return this;
@@ -65,19 +67,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -100,7 +99,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FormatTest.java
index 7f83ebda6cb..d44579f78f9 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/FormatTest.java
@@ -9,6 +9,8 @@ import io.swagger.annotations.ApiModelProperty;
 import java.math.BigDecimal;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.LocalDate;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -17,12 +19,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -48,14 +53,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -78,9 +83,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -100,9 +104,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -120,9 +123,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -142,11 +144,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -166,9 +165,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -188,9 +186,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -208,9 +205,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -228,10 +224,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -240,7 +234,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -249,15 +243,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -270,11 +262,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -292,10 +281,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -313,10 +300,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -334,10 +319,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -355,10 +338,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -367,7 +348,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -402,7 +382,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index a712d19243f..001a3cea286 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -64,7 +65,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MapTest.java
index a4f10eadf35..d9bc6491e74 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MapTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -90,10 +93,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -119,9 +120,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -147,9 +147,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -175,9 +174,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -186,7 +184,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -211,7 +208,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index b6607ec1de2..a3e6d4338bf 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -11,6 +11,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.jackson.nullable.JsonNullable;
 import javax.validation.Valid;
@@ -18,17 +19,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -44,10 +48,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -65,10 +67,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -94,10 +94,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -106,7 +104,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -130,7 +127,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Model200Response.java
index 8e51dc7b0bf..a308820b4be 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Model200Response.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -34,9 +37,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -54,9 +56,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -65,7 +66,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
index 1c50e0984df..a932355454b 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -36,9 +39,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -56,9 +58,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -76,9 +77,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -87,7 +87,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -111,7 +110,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d31f39a5bf1
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..55133349d68
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,83 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelReturn.java
index f71f60f5970..2c67234126d 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ModelReturn.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -31,9 +34,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -42,7 +44,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Name.java
index 8336bed2c94..96cadd49736 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Name.java
@@ -12,13 +12,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -40,10 +43,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -61,9 +62,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -81,9 +81,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -101,9 +100,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -112,7 +110,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -137,7 +134,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/NumberOnly.java
index 87c0551edfc..4ed41292ec0 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/NumberOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -31,10 +34,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -43,7 +44,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +65,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Order.java
index c03246a0acb..6c5cc6ed8b2 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Order.java
@@ -7,6 +7,7 @@ import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.threeten.bp.OffsetDateTime;
 import org.openapitools.jackson.nullable.JsonNullable;
 import javax.validation.Valid;
@@ -14,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -30,7 +34,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -85,9 +89,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -105,9 +108,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -125,9 +127,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -145,10 +146,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -166,9 +165,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -186,9 +184,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -197,7 +194,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -224,7 +220,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterComposite.java
index 34098a524fc..2fa1e8576af 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterComposite.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -37,10 +40,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -58,9 +59,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -78,9 +78,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -89,7 +88,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -113,7 +111,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterEnum.java
index 33f64f0954e..542939a2a63 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/OuterEnum.java
@@ -9,6 +9,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -16,6 +17,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Pet.java
index 8e56b7045ab..1a4e757a147 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Pet.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -89,9 +92,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -109,10 +111,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -130,10 +130,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -156,10 +154,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -185,10 +181,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -206,9 +200,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -217,7 +210,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -244,7 +236,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index 655154d2cf2..5cf483cb584 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -33,9 +36,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -53,9 +55,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -64,7 +65,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java
index beddd922ad4..6f360adf416 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -30,9 +33,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -41,7 +43,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -63,7 +64,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Tag.java
index c7dba2565ee..0131b8854d8 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/Tag.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -33,9 +36,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -53,9 +55,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -64,7 +65,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -87,7 +87,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
index 9dbb6eeeb09..66adede6dd1 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -46,10 +49,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -67,11 +68,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -89,10 +87,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -110,10 +106,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -136,10 +130,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -148,7 +140,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -174,7 +165,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
index 998c11fb323..b03cc5c37ec 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -49,10 +52,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -70,11 +71,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -92,10 +90,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -113,10 +109,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -134,10 +128,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -160,10 +152,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -172,7 +162,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -199,7 +188,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/User.java
index ac48b7bd3ac..f443caa28bf 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/User.java
@@ -12,12 +12,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -51,9 +54,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -71,9 +73,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -91,9 +92,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -111,9 +111,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -131,9 +130,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -151,9 +149,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -171,9 +168,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -191,9 +187,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -202,7 +197,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -231,7 +225,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/XmlItem.java
index fa83623c4bf..4c6f7d42bd9 100644
--- a/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-spring-pageable-without-j8/src/main/java/org/openapitools/model/XmlItem.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -126,9 +129,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -146,10 +148,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -167,9 +167,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -187,9 +186,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -215,9 +213,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -235,9 +232,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -255,10 +251,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -276,9 +270,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -296,9 +289,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -324,9 +316,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -352,9 +343,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -372,9 +362,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -392,10 +381,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -413,9 +400,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -433,9 +419,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -461,9 +446,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -489,9 +473,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -509,9 +492,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -529,10 +511,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -550,9 +530,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -570,9 +549,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -598,9 +576,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -626,9 +603,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -646,9 +622,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -666,10 +641,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -687,9 +660,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -707,9 +679,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -735,9 +706,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -763,9 +733,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -774,7 +743,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -824,7 +792,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/.openapi-generator/FILES b/samples/server/petstore/springboot-spring-pageable/.openapi-generator/FILES
index cc5174f019b..2218b36d761 100644
--- a/samples/server/petstore/springboot-spring-pageable/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-spring-pageable/.openapi-generator/FILES
@@ -39,6 +39,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -46,6 +47,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java
index 8c700d4f0f8..8377cfb4f66 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
index 6e46b5c6f9d..1c463718ec6 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApi.java
@@ -5,8 +5,11 @@
  */
 package org.openapitools.api;
 
+import springfox.documentation.annotations.ApiIgnore;
 import org.openapitools.model.ModelApiResponse;
+import org.springframework.data.domain.Pageable;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
@@ -21,7 +24,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
@@ -136,7 +141,7 @@ public interface PetApi {
     )
     default ResponseEntity<List<Pet>> findPetsByStatus(
         @NotNull @ApiParam(value = "Status values that need to be considered for filter", required = true, allowableValues = "available, pending, sold") @Valid @RequestParam(value = "status", required = true) List<String> status,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         getRequest().ifPresent(request -> {
             for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
@@ -191,7 +196,7 @@ public interface PetApi {
     )
     default ResponseEntity<List<Pet>> findPetsByTags(
         @NotNull @ApiParam(value = "Tags to filter by", required = true) @Valid @RequestParam(value = "tags", required = true) List<String> tags,
-        @springfox.documentation.annotations.ApiIgnore final org.springframework.data.domain.Pageable pageable
+        @ApiIgnore final Pageable pageable
     ) {
         getRequest().ifPresent(request -> {
             for (MediaType mediaType: MediaType.parseMediaTypes(request.getHeader("Accept"))) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Animal.java
index db4f29350de..1dc5fc69c61 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Animal.java
@@ -15,18 +15,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -42,10 +44,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -63,9 +63,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -74,7 +73,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -97,7 +95,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Pet.java
index 729ef7defa5..d330c28e679 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Pet.java
@@ -18,12 +18,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -90,9 +93,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -110,10 +112,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -131,10 +131,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -157,10 +155,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -186,10 +182,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -207,9 +201,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -218,7 +211,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -245,7 +237,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-spring-pageable/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/.openapi-generator/FILES b/samples/server/petstore/springboot-useoptional/.openapi-generator/FILES
index e4c32719b54..6d8d3656155 100644
--- a/samples/server/petstore/springboot-useoptional/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-useoptional/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java
index 64b57f6c9c5..c974fe8f808 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java
index 18d9c9a2ca7..d40b97cd9ee 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot-useoptional/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/.openapi-generator/FILES b/samples/server/petstore/springboot-virtualan/.openapi-generator/FILES
index 0d1c364ddf2..e8f7235942a 100644
--- a/samples/server/petstore/springboot-virtualan/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot-virtualan/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/virtualan/model/DogAllOf.java
 src/main/java/org/openapitools/virtualan/model/EnumArrays.java
 src/main/java/org/openapitools/virtualan/model/EnumClass.java
 src/main/java/org/openapitools/virtualan/model/EnumTest.java
+src/main/java/org/openapitools/virtualan/model/File.java
 src/main/java/org/openapitools/virtualan/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/virtualan/model/FormatTest.java
 src/main/java/org/openapitools/virtualan/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/virtualan/model/MapTest.java
 src/main/java/org/openapitools/virtualan/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/virtualan/model/Model200Response.java
 src/main/java/org/openapitools/virtualan/model/ModelApiResponse.java
+src/main/java/org/openapitools/virtualan/model/ModelList.java
 src/main/java/org/openapitools/virtualan/model/ModelReturn.java
 src/main/java/org/openapitools/virtualan/model/Name.java
 src/main/java/org/openapitools/virtualan/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApi.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApi.java
index f4fbd068946..d1c4faf132c 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 @VirtualService
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApiController.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApiController.java
index 78ba74424cb..7245dbfc644 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.virtualan.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApi.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApi.java
index ba5291df033..26b77fb5056 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApi.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.virtualan.api;
 
 import java.math.BigDecimal;
 import org.openapitools.virtualan.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.virtualan.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.virtualan.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.virtualan.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.virtualan.model.User;
 import org.openapitools.virtualan.model.XmlItem;
 import io.swagger.annotations.*;
@@ -31,7 +33,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 @VirtualService
@@ -357,8 +361,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApiController.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApiController.java
index 4d76ead3667..ece740199a6 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApiController.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.virtualan.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApi.java
index 82c1f64160c..26a556b645a 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 @VirtualService
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApiController.java
index a737205f48f..b49aa3047d7 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.virtualan.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApi.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApi.java
index 2048477990f..d78013fb7d5 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApi.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.virtualan.api;
 
 import org.openapitools.virtualan.model.ModelApiResponse;
 import org.openapitools.virtualan.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import io.virtualan.annotation.ApiVirtual;
@@ -24,7 +25,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 @VirtualService
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApiController.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApiController.java
index 0abcfc3c713..944d8536c30 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApiController.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.virtualan.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApi.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApi.java
index c7975784e7f..6d71422bcb7 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApi.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApi.java
@@ -23,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 @VirtualService
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApiController.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApiController.java
index 8302e160778..d7441d6c6e0 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApiController.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.virtualan.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApi.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApi.java
index 0f5e1338b2c..15feb22d2e6 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApi.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApi.java
@@ -24,7 +24,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 @VirtualService
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApiController.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApiController.java
index 46bbd55b84f..676266d1702 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApiController.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.virtualan.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesAnyType.java
index 22fa90b899c..7a9d204bd40 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesArray.java
index 83acca5c876..a286c969cdc 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesBoolean.java
index 8d09220b9cb..b379ee89c6c 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesClass.java
index d51807ac976..e88acdf7366 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesInteger.java
index cac69369d0a..72f7d357b89 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesNumber.java
index b58b9bc950c..d6ee16b057d 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesObject.java
index 67b8b985fed..bc35d0c6c34 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesString.java
index 51c6a305466..afe4036afff 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Animal.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Animal.java
index 51c6715f728..f6ff1b04411 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Animal.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfArrayOfNumberOnly.java
index bafe2d77003..15759a42b45 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfNumberOnly.java
index e7c79260c17..d2cd808c864 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayTest.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayTest.java
index 620e277c374..3d8904d1860 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayTest.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCat.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCat.java
index 4ed49f643a6..21f41931c65 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCat.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCatAllOf.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCatAllOf.java
index 94323193320..ec9f1f735d1 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Capitalization.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Capitalization.java
index d21f7764706..c8b98732c14 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Capitalization.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Cat.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Cat.java
index 395738af94c..9575c51db52 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Cat.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/CatAllOf.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/CatAllOf.java
index b0ad30eb11c..07df0cf4f63 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/CatAllOf.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Category.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Category.java
index c626fa4b8cf..89b1e16c956 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Category.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ClassModel.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ClassModel.java
index cef8cd8b90a..e2fbb4c8484 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ClassModel.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Client.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Client.java
index 28b2c3b1b5f..0d17cf36c36 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Client.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Dog.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Dog.java
index 8af075378f7..ad083982b12 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Dog.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/DogAllOf.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/DogAllOf.java
index 678e4809263..03a99e51d04 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/DogAllOf.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumArrays.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumArrays.java
index c2d6663545f..fc07498099e 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumArrays.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumClass.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumClass.java
index 85be2a8ca87..395fca337a5 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumClass.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumTest.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumTest.java
index d27c78376ab..716aa26971a 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumTest.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/File.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/File.java
new file mode 100644
index 00000000000..a10d9cf3cba
--- /dev/null
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.virtualan.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FileSchemaTestClass.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FileSchemaTestClass.java
index 7000e76b90d..1bdf0037dbb 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FormatTest.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FormatTest.java
index b17cb35148c..7495eb4765b 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FormatTest.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/HasOnlyReadOnly.java
index e74e246e1ee..d80b97c6a2a 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MapTest.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MapTest.java
index 1aac4a7b761..8668bdd5229 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MapTest.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 3b7c1d6f066..d3062bf298a 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.virtualan.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Model200Response.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Model200Response.java
index d6ee65d5da4..57d1ea9cf5a 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Model200Response.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelApiResponse.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelApiResponse.java
index 7aa0db2e770..3245ee17d3f 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelFile.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelFile.java
new file mode 100644
index 00000000000..3339e215b37
--- /dev/null
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.virtualan.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelList.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelList.java
new file mode 100644
index 00000000000..74de2ea47b2
--- /dev/null
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.virtualan.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelReturn.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelReturn.java
index beccd82a057..d201058acd3 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelReturn.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Name.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Name.java
index 09c2ff8ded9..ca925033ab9 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Name.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/NumberOnly.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/NumberOnly.java
index ac7912f6bb3..ec8823c6d1d 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/NumberOnly.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Order.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Order.java
index f7053b1ef4c..f87bbe4c5b6 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Order.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterComposite.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterComposite.java
index 654297922e7..6fa8aa39a0b 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterComposite.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterEnum.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterEnum.java
index 574ca853a37..3f9a0619579 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterEnum.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Pet.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Pet.java
index 997db40fa47..d5f7277f336 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Pet.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ReadOnlyFirst.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ReadOnlyFirst.java
index 0da3f27957b..945a44bdc55 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/SpecialModelName.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/SpecialModelName.java
index 030ff057ae4..8b156545d7f 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Tag.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Tag.java
index 05f100a5113..ba86da8547f 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Tag.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderDefault.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderDefault.java
index 603dceb1369..ac1bbc67404 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderExample.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderExample.java
index a8470a066d8..21ceeea10b8 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/User.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/User.java
index 8232f1059a4..14aeefb90b4 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/User.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/XmlItem.java b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/XmlItem.java
index 0a23cfea116..01e81e5fdc6 100644
--- a/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/XmlItem.java
+++ b/samples/server/petstore/springboot-virtualan/src/main/java/org/openapitools/virtualan/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/samples/server/petstore/springboot/.openapi-generator/FILES b/samples/server/petstore/springboot/.openapi-generator/FILES
index e4c32719b54..6d8d3656155 100644
--- a/samples/server/petstore/springboot/.openapi-generator/FILES
+++ b/samples/server/petstore/springboot/.openapi-generator/FILES
@@ -41,6 +41,7 @@ src/main/java/org/openapitools/model/DogAllOf.java
 src/main/java/org/openapitools/model/EnumArrays.java
 src/main/java/org/openapitools/model/EnumClass.java
 src/main/java/org/openapitools/model/EnumTest.java
+src/main/java/org/openapitools/model/File.java
 src/main/java/org/openapitools/model/FileSchemaTestClass.java
 src/main/java/org/openapitools/model/FormatTest.java
 src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -48,6 +49,7 @@ src/main/java/org/openapitools/model/MapTest.java
 src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
 src/main/java/org/openapitools/model/Model200Response.java
 src/main/java/org/openapitools/model/ModelApiResponse.java
+src/main/java/org/openapitools/model/ModelList.java
 src/main/java/org/openapitools/model/ModelReturn.java
 src/main/java/org/openapitools/model/Name.java
 src/main/java/org/openapitools/model/NumberOnly.java
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApi.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApi.java
index 49d703d71da..bbbc5c96bf7 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApi.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "another-fake", description = "the another-fake API")
 public interface AnotherFakeApi {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApiController.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApiController.java
index d8efcca7f8a..4bad7b07b87 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApiController.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/AnotherFakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class AnotherFakeApiController implements AnotherFakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public AnotherFakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApi.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApi.java
index 6f95540156b..5b6d1540fd0 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApi.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApi.java
@@ -7,12 +7,14 @@ package org.openapitools.api;
 
 import java.math.BigDecimal;
 import org.openapitools.model.Client;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.model.FileSchemaTestClass;
 import java.time.LocalDate;
 import java.util.Map;
 import org.openapitools.model.ModelApiResponse;
 import java.time.OffsetDateTime;
 import org.openapitools.model.OuterComposite;
+import org.springframework.core.io.Resource;
 import org.openapitools.model.User;
 import org.openapitools.model.XmlItem;
 import io.swagger.annotations.*;
@@ -29,7 +31,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake", description = "the fake API")
 public interface FakeApi {
@@ -345,8 +349,8 @@ public interface FakeApi {
         @ApiParam(value = "None") @Valid @RequestPart(value = "float", required = false) Float _float,
         @ApiParam(value = "None") @Valid @RequestPart(value = "string", required = false) String string,
         @ApiParam(value = "None") @RequestPart(value = "binary", required = false) MultipartFile binary,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE) LocalDate date,
-        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "date", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE) LocalDate date,
+        @ApiParam(value = "None") @Valid @RequestPart(value = "dateTime", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime dateTime,
         @ApiParam(value = "None") @Valid @RequestPart(value = "password", required = false) String password,
         @ApiParam(value = "None") @Valid @RequestPart(value = "callback", required = false) String paramCallback
     ) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApiController.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApiController.java
index c4b88419aab..c150dba343e 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApiController.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeApiController implements FakeApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApi.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
index 8c44f6c0992..17ce875daaa 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApi.java
@@ -20,7 +20,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "fake_classname_test", description = "the fake_classname_test API")
 public interface FakeClassnameTestApi {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
index 85458b255da..1fb4dc597f8 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/FakeClassnameTestApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class FakeClassnameTestApiController implements FakeClassnameTestApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public FakeClassnameTestApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java
index 316f07e4484..de62ec85c83 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApi.java
@@ -7,6 +7,7 @@ package org.openapitools.api;
 
 import org.openapitools.model.ModelApiResponse;
 import org.openapitools.model.Pet;
+import org.springframework.core.io.Resource;
 import java.util.Set;
 import io.swagger.annotations.*;
 import org.springframework.http.HttpStatus;
@@ -22,7 +23,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "pet", description = "the pet API")
 public interface PetApi {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java
index e72c57e3cbe..4ad9ef06158 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/PetApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class PetApiController implements PetApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public PetApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java
index 84abf719182..1292cf4edaa 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApi.java
@@ -21,7 +21,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "store", description = "the store API")
 public interface StoreApi {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java
index 1293b5c8f6e..293d3035f80 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/StoreApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class StoreApiController implements StoreApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public StoreApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java
index 86fcdae1102..8b7791294a9 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApi.java
@@ -22,7 +22,9 @@ import javax.validation.constraints.*;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Validated
 @Api(value = "user", description = "the user API")
 public interface UserApi {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java
index 3f6c4d9a2d6..aab4767a50d 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/api/UserApiController.java
@@ -2,16 +2,19 @@ package org.openapitools.api;
 
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.context.request.NativeWebRequest;
 import java.util.Optional;
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+import javax.annotation.Generated;
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 @Controller
 @RequestMapping("${openapi.openAPIPetstore.base-path:/v2}")
 public class UserApiController implements UserApi {
 
     private final NativeWebRequest request;
 
-    @org.springframework.beans.factory.annotation.Autowired
+    @Autowired
     public UserApiController(NativeWebRequest request) {
         this.request = request;
     }
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
index 847d9f37777..ea719cc4ad8 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesAnyType.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesAnyType
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesAnyType extends HashMap<String, Object>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
index 31b7fad0c94..a4ec39252eb 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesArray.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesArray
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesArray extends HashMap<String, List>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesArray extends HashMap<String, List>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
index 5c23bc8d768..47db34f7b50 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesBoolean.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesBoolean
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesBoolean extends HashMap<String, Boolean>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
index 82d25ab6e74..5851aa2c249 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesClass.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesClass   {
+
   @JsonProperty("map_string")
   @Valid
   private Map<String, String> mapString = null;
@@ -81,9 +84,8 @@ public class AdditionalPropertiesClass   {
    * Get mapString
    * @return mapString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, String> getMapString() {
     return mapString;
   }
@@ -109,10 +111,8 @@ public class AdditionalPropertiesClass   {
    * Get mapNumber
    * @return mapNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, BigDecimal> getMapNumber() {
     return mapNumber;
   }
@@ -138,9 +138,8 @@ public class AdditionalPropertiesClass   {
    * Get mapInteger
    * @return mapInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Integer> getMapInteger() {
     return mapInteger;
   }
@@ -166,9 +165,8 @@ public class AdditionalPropertiesClass   {
    * Get mapBoolean
    * @return mapBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getMapBoolean() {
     return mapBoolean;
   }
@@ -194,10 +192,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayInteger
    * @return mapArrayInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Integer>> getMapArrayInteger() {
     return mapArrayInteger;
   }
@@ -223,10 +219,8 @@ public class AdditionalPropertiesClass   {
    * Get mapArrayAnytype
    * @return mapArrayAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, List<Object>> getMapArrayAnytype() {
     return mapArrayAnytype;
   }
@@ -252,10 +246,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapString
    * @return mapMapString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapString() {
     return mapMapString;
   }
@@ -281,10 +273,8 @@ public class AdditionalPropertiesClass   {
    * Get mapMapAnytype
    * @return mapMapAnytype
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, Object>> getMapMapAnytype() {
     return mapMapAnytype;
   }
@@ -302,9 +292,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype1
    * @return anytype1
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype1() {
     return anytype1;
   }
@@ -322,9 +311,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype2
    * @return anytype2
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype2() {
     return anytype2;
   }
@@ -342,9 +330,8 @@ public class AdditionalPropertiesClass   {
    * Get anytype3
    * @return anytype3
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Object getAnytype3() {
     return anytype3;
   }
@@ -353,7 +340,6 @@ public class AdditionalPropertiesClass   {
     this.anytype3 = anytype3;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -385,7 +371,6 @@ public class AdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class AdditionalPropertiesClass {\n");
-    
     sb.append("    mapString: ").append(toIndentedString(mapString)).append("\n");
     sb.append("    mapNumber: ").append(toIndentedString(mapNumber)).append("\n");
     sb.append("    mapInteger: ").append(toIndentedString(mapInteger)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
index 802674f7820..bba3dce1a55 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesInteger.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesInteger
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesInteger extends HashMap<String, Integer>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
index 787a4262026..5f48487e05d 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesNumber.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesNumber
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -34,9 +37,8 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -45,7 +47,6 @@ public class AdditionalPropertiesNumber extends HashMap<String, BigDecimal>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
index 271b66cf682..40ca1af6ab4 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesObject.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesObject
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesObject extends HashMap<String, Map>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesObject extends HashMap<String, Map>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesString.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
index 08ba6bfe63c..ddc76e27b19 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/AdditionalPropertiesString.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * AdditionalPropertiesString
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class AdditionalPropertiesString extends HashMap<String, String>  {
+
   @JsonProperty("name")
   private String name;
 
@@ -33,9 +36,8 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -44,7 +46,6 @@ public class AdditionalPropertiesString extends HashMap<String, String>  {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Animal.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Animal.java
index 7598b6f5561..fcd78770a43 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Animal.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Animal.java
@@ -15,19 +15,21 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Animal
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXISTING_PROPERTY, property = "className", visible = true)
 @JsonSubTypes({
   @JsonSubTypes.Type(value = BigCat.class, name = "BigCat"),
   @JsonSubTypes.Type(value = Cat.class, name = "Cat"),
   @JsonSubTypes.Type(value = Dog.class, name = "Dog"),
 })
-
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Animal   {
+
   @JsonProperty("className")
   private String className;
 
@@ -43,10 +45,8 @@ public class Animal   {
    * Get className
    * @return className
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getClassName() {
     return className;
   }
@@ -64,9 +64,8 @@ public class Animal   {
    * Get color
    * @return color
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getColor() {
     return color;
   }
@@ -75,7 +74,6 @@ public class Animal   {
     this.color = color;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -98,7 +96,6 @@ public class Animal   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Animal {\n");
-    
     sb.append("    className: ").append(toIndentedString(className)).append("\n");
     sb.append("    color: ").append(toIndentedString(color)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
index bf1b74e83fc..3859dcfdcc0 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfArrayOfNumberOnly   {
+
   @JsonProperty("ArrayArrayNumber")
   @Valid
   private List<List<BigDecimal>> arrayArrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfArrayOfNumberOnly   {
    * Get arrayArrayNumber
    * @return arrayArrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<BigDecimal>> getArrayArrayNumber() {
     return arrayArrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfArrayOfNumberOnly   {
     this.arrayArrayNumber = arrayArrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfArrayOfNumberOnly {\n");
-    
     sb.append("    arrayArrayNumber: ").append(toIndentedString(arrayArrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
index f1ced8ef71a..a90ce117c23 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayOfNumberOnly.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayOfNumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayOfNumberOnly   {
+
   @JsonProperty("ArrayNumber")
   @Valid
   private List<BigDecimal> arrayNumber = null;
@@ -43,10 +46,8 @@ public class ArrayOfNumberOnly   {
    * Get arrayNumber
    * @return arrayNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<BigDecimal> getArrayNumber() {
     return arrayNumber;
   }
@@ -55,7 +56,6 @@ public class ArrayOfNumberOnly   {
     this.arrayNumber = arrayNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -77,7 +77,6 @@ public class ArrayOfNumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayOfNumberOnly {\n");
-    
     sb.append("    arrayNumber: ").append(toIndentedString(arrayNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayTest.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayTest.java
index 81c7ab3dd78..e8f37b16d5c 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayTest.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ArrayTest.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ArrayTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ArrayTest   {
+
   @JsonProperty("array_of_string")
   @Valid
   private List<String> arrayOfString = null;
@@ -51,9 +54,8 @@ public class ArrayTest   {
    * Get arrayOfString
    * @return arrayOfString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<String> getArrayOfString() {
     return arrayOfString;
   }
@@ -79,10 +81,8 @@ public class ArrayTest   {
    * Get arrayArrayOfInteger
    * @return arrayArrayOfInteger
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<Long>> getArrayArrayOfInteger() {
     return arrayArrayOfInteger;
   }
@@ -108,10 +108,8 @@ public class ArrayTest   {
    * Get arrayArrayOfModel
    * @return arrayArrayOfModel
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<List<ReadOnlyFirst>> getArrayArrayOfModel() {
     return arrayArrayOfModel;
   }
@@ -120,7 +118,6 @@ public class ArrayTest   {
     this.arrayArrayOfModel = arrayArrayOfModel;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -144,7 +141,6 @@ public class ArrayTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ArrayTest {\n");
-    
     sb.append("    arrayOfString: ").append(toIndentedString(arrayOfString)).append("\n");
     sb.append("    arrayArrayOfInteger: ").append(toIndentedString(arrayArrayOfInteger)).append("\n");
     sb.append("    arrayArrayOfModel: ").append(toIndentedString(arrayArrayOfModel)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCat.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCat.java
index 1835c7bf211..68a00f5edd4 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCat.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCat.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCat extends Cat  {
+
   /**
    * Gets or Sets kind
    */
@@ -73,9 +76,8 @@ public class BigCat extends Cat  {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -84,7 +86,6 @@ public class BigCat extends Cat  {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCatAllOf.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCatAllOf.java
index 43555f5bfed..0a8bd522873 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCatAllOf.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/BigCatAllOf.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * BigCatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class BigCatAllOf   {
+
   /**
    * Gets or Sets kind
    */
@@ -71,9 +74,8 @@ public class BigCatAllOf   {
    * Get kind
    * @return kind
   */
+  
   @ApiModelProperty(value = "")
-
-
   public KindEnum getKind() {
     return kind;
   }
@@ -82,7 +84,6 @@ public class BigCatAllOf   {
     this.kind = kind;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -104,7 +105,6 @@ public class BigCatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class BigCatAllOf {\n");
-    
     sb.append("    kind: ").append(toIndentedString(kind)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Capitalization.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Capitalization.java
index 2ccf1e812e5..37c928a7948 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Capitalization.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Capitalization.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Capitalization
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Capitalization   {
+
   @JsonProperty("smallCamel")
   private String smallCamel;
 
@@ -46,9 +49,8 @@ public class Capitalization   {
    * Get smallCamel
    * @return smallCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallCamel() {
     return smallCamel;
   }
@@ -66,9 +68,8 @@ public class Capitalization   {
    * Get capitalCamel
    * @return capitalCamel
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalCamel() {
     return capitalCamel;
   }
@@ -86,9 +87,8 @@ public class Capitalization   {
    * Get smallSnake
    * @return smallSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getSmallSnake() {
     return smallSnake;
   }
@@ -106,9 +106,8 @@ public class Capitalization   {
    * Get capitalSnake
    * @return capitalSnake
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getCapitalSnake() {
     return capitalSnake;
   }
@@ -126,9 +125,8 @@ public class Capitalization   {
    * Get scAETHFlowPoints
    * @return scAETHFlowPoints
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getScAETHFlowPoints() {
     return scAETHFlowPoints;
   }
@@ -146,9 +144,8 @@ public class Capitalization   {
    * Name of the pet 
    * @return ATT_NAME
   */
+  
   @ApiModelProperty(value = "Name of the pet ")
-
-
   public String getATTNAME() {
     return ATT_NAME;
   }
@@ -157,7 +154,6 @@ public class Capitalization   {
     this.ATT_NAME = ATT_NAME;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -184,7 +180,6 @@ public class Capitalization   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Capitalization {\n");
-    
     sb.append("    smallCamel: ").append(toIndentedString(smallCamel)).append("\n");
     sb.append("    capitalCamel: ").append(toIndentedString(capitalCamel)).append("\n");
     sb.append("    smallSnake: ").append(toIndentedString(smallSnake)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Cat.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Cat.java
index 0876d9f30a0..9fb7bfef180 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Cat.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Cat.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Cat
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Cat extends Animal  {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -33,9 +36,8 @@ public class Cat extends Animal  {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -44,7 +46,6 @@ public class Cat extends Animal  {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/CatAllOf.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/CatAllOf.java
index d59a3783d0a..c4acf4858c3 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/CatAllOf.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/CatAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * CatAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class CatAllOf   {
+
   @JsonProperty("declawed")
   private Boolean declawed;
 
@@ -31,9 +34,8 @@ public class CatAllOf   {
    * Get declawed
    * @return declawed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getDeclawed() {
     return declawed;
   }
@@ -42,7 +44,6 @@ public class CatAllOf   {
     this.declawed = declawed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class CatAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class CatAllOf {\n");
-    
     sb.append("    declawed: ").append(toIndentedString(declawed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java
index ef9a938298b..8adf35c2fa0 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Category.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Category
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Category   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Category   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,10 +56,8 @@ public class Category   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -66,7 +66,6 @@ public class Category   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +88,6 @@ public class Category   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Category {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ClassModel.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ClassModel.java
index af4c7442312..72e9288b53a 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ClassModel.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ClassModel.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model with \&quot;_class\&quot; property
  */
+
 @ApiModel(description = "Model for testing model with \"_class\" property")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ClassModel   {
+
   @JsonProperty("_class")
   private String propertyClass;
 
@@ -32,9 +35,8 @@ public class ClassModel   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -43,7 +45,6 @@ public class ClassModel   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ClassModel   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ClassModel {\n");
-    
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Client.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Client.java
index 298c69c03b1..9891fe7dafc 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Client.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Client.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Client
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Client   {
+
   @JsonProperty("client")
   private String client;
 
@@ -31,9 +34,8 @@ public class Client   {
    * Get client
    * @return client
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getClient() {
     return client;
   }
@@ -42,7 +44,6 @@ public class Client   {
     this.client = client;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class Client   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Client {\n");
-    
     sb.append("    client: ").append(toIndentedString(client)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Dog.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Dog.java
index 09938cd0f5f..3ee8ac59689 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Dog.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Dog.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Dog
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Dog extends Animal  {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -33,9 +36,8 @@ public class Dog extends Animal  {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -44,7 +46,6 @@ public class Dog extends Animal  {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/DogAllOf.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/DogAllOf.java
index d95ac4a329d..d6ff0e0564f 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/DogAllOf.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/DogAllOf.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * DogAllOf
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class DogAllOf   {
+
   @JsonProperty("breed")
   private String breed;
 
@@ -31,9 +34,8 @@ public class DogAllOf   {
    * Get breed
    * @return breed
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBreed() {
     return breed;
   }
@@ -42,7 +44,6 @@ public class DogAllOf   {
     this.breed = breed;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class DogAllOf   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class DogAllOf {\n");
-    
     sb.append("    breed: ").append(toIndentedString(breed)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumArrays.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumArrays.java
index beeff77d9e5..b85ad3e155e 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumArrays.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumArrays.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumArrays
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumArrays   {
+
   /**
    * Gets or Sets justSymbol
    */
@@ -108,9 +111,8 @@ public class EnumArrays   {
    * Get justSymbol
    * @return justSymbol
   */
+  
   @ApiModelProperty(value = "")
-
-
   public JustSymbolEnum getJustSymbol() {
     return justSymbol;
   }
@@ -136,9 +138,8 @@ public class EnumArrays   {
    * Get arrayEnum
    * @return arrayEnum
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<ArrayEnumEnum> getArrayEnum() {
     return arrayEnum;
   }
@@ -147,7 +148,6 @@ public class EnumArrays   {
     this.arrayEnum = arrayEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -170,7 +170,6 @@ public class EnumArrays   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumArrays {\n");
-    
     sb.append("    justSymbol: ").append(toIndentedString(justSymbol)).append("\n");
     sb.append("    arrayEnum: ").append(toIndentedString(arrayEnum)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumClass.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumClass.java
index 8f82b2f7843..c2abaaed430 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumClass.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumClass.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets EnumClass
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum EnumClass {
   
   _ABC("_abc"),
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumTest.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumTest.java
index 0ce7ab0f2fa..5e0e3b8a65e 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumTest.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/EnumTest.java
@@ -15,12 +15,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * EnumTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class EnumTest   {
+
   /**
    * Gets or Sets enumString
    */
@@ -189,9 +192,8 @@ public class EnumTest   {
    * Get enumString
    * @return enumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumStringEnum getEnumString() {
     return enumString;
   }
@@ -209,10 +211,8 @@ public class EnumTest   {
    * Get enumStringRequired
    * @return enumStringRequired
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public EnumStringRequiredEnum getEnumStringRequired() {
     return enumStringRequired;
   }
@@ -230,9 +230,8 @@ public class EnumTest   {
    * Get enumInteger
    * @return enumInteger
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumIntegerEnum getEnumInteger() {
     return enumInteger;
   }
@@ -250,9 +249,8 @@ public class EnumTest   {
    * Get enumNumber
    * @return enumNumber
   */
+  
   @ApiModelProperty(value = "")
-
-
   public EnumNumberEnum getEnumNumber() {
     return enumNumber;
   }
@@ -270,10 +268,8 @@ public class EnumTest   {
    * Get outerEnum
    * @return outerEnum
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OuterEnum getOuterEnum() {
     return outerEnum;
   }
@@ -282,7 +278,6 @@ public class EnumTest   {
     this.outerEnum = outerEnum;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -308,7 +303,6 @@ public class EnumTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class EnumTest {\n");
-    
     sb.append("    enumString: ").append(toIndentedString(enumString)).append("\n");
     sb.append("    enumStringRequired: ").append(toIndentedString(enumStringRequired)).append("\n");
     sb.append("    enumInteger: ").append(toIndentedString(enumInteger)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/File.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/File.java
new file mode 100644
index 00000000000..68539466497
--- /dev/null
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/File.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+
+@ApiModel(description = "Must be named `File` for test.")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class File   {
+
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public File sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  
+  @ApiModelProperty(value = "Test capitalization")
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    File file = (File) o;
+    return Objects.equals(this.sourceURI, file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class File {\n");
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FileSchemaTestClass.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FileSchemaTestClass.java
index ea5aa826feb..01149ce8f6a 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FileSchemaTestClass.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FileSchemaTestClass.java
@@ -6,6 +6,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonCreator;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import org.openapitools.jackson.nullable.JsonNullable;
@@ -15,20 +16,23 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FileSchemaTestClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FileSchemaTestClass   {
+
   @JsonProperty("file")
-  private java.io.File file;
+  private File file;
 
   @JsonProperty("files")
   @Valid
-  private List<java.io.File> files = null;
+  private List<File> files = null;
 
-  public FileSchemaTestClass file(java.io.File file) {
+  public FileSchemaTestClass file(File file) {
     this.file = file;
     return this;
   }
@@ -37,24 +41,22 @@ public class FileSchemaTestClass   {
    * Get file
    * @return file
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public java.io.File getFile() {
+  public File getFile() {
     return file;
   }
 
-  public void setFile(java.io.File file) {
+  public void setFile(File file) {
     this.file = file;
   }
 
-  public FileSchemaTestClass files(List<java.io.File> files) {
+  public FileSchemaTestClass files(List<File> files) {
     this.files = files;
     return this;
   }
 
-  public FileSchemaTestClass addFilesItem(java.io.File filesItem) {
+  public FileSchemaTestClass addFilesItem(File filesItem) {
     if (this.files == null) {
       this.files = new ArrayList<>();
     }
@@ -66,19 +68,16 @@ public class FileSchemaTestClass   {
    * Get files
    * @return files
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public List<java.io.File> getFiles() {
+  public List<File> getFiles() {
     return files;
   }
 
-  public void setFiles(List<java.io.File> files) {
+  public void setFiles(List<File> files) {
     this.files = files;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -101,7 +100,6 @@ public class FileSchemaTestClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FileSchemaTestClass {\n");
-    
     sb.append("    file: ").append(toIndentedString(file)).append("\n");
     sb.append("    files: ").append(toIndentedString(files)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FormatTest.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FormatTest.java
index 352d758ce6e..91d370eeb05 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FormatTest.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/FormatTest.java
@@ -11,6 +11,8 @@ import java.time.LocalDate;
 import java.time.OffsetDateTime;
 import java.util.Arrays;
 import java.util.UUID;
+import org.springframework.core.io.Resource;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -18,12 +20,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * FormatTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class FormatTest   {
+
   @JsonProperty("integer")
   private Integer integer;
 
@@ -49,14 +54,14 @@ public class FormatTest   {
   private byte[] _byte;
 
   @JsonProperty("binary")
-  private org.springframework.core.io.Resource binary;
+  private Resource binary;
 
   @JsonProperty("date")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
   private LocalDate date;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("uuid")
@@ -79,9 +84,8 @@ public class FormatTest   {
    * maximum: 100
    * @return integer
   */
+  @Min(10) @Max(100) 
   @ApiModelProperty(value = "")
-
-@Min(10) @Max(100) 
   public Integer getInteger() {
     return integer;
   }
@@ -101,9 +105,8 @@ public class FormatTest   {
    * maximum: 200
    * @return int32
   */
+  @Min(20) @Max(200) 
   @ApiModelProperty(value = "")
-
-@Min(20) @Max(200) 
   public Integer getInt32() {
     return int32;
   }
@@ -121,9 +124,8 @@ public class FormatTest   {
    * Get int64
    * @return int64
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getInt64() {
     return int64;
   }
@@ -143,11 +145,8 @@ public class FormatTest   {
    * maximum: 543.2
    * @return number
   */
+  @NotNull @Valid @DecimalMin("32.1") @DecimalMax("543.2") 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-@DecimalMin("32.1") @DecimalMax("543.2") 
   public BigDecimal getNumber() {
     return number;
   }
@@ -167,9 +166,8 @@ public class FormatTest   {
    * maximum: 987.6
    * @return _float
   */
+  @DecimalMin("54.3") @DecimalMax("987.6") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("54.3") @DecimalMax("987.6") 
   public Float getFloat() {
     return _float;
   }
@@ -189,9 +187,8 @@ public class FormatTest   {
    * maximum: 123.4
    * @return _double
   */
+  @DecimalMin("67.8") @DecimalMax("123.4") 
   @ApiModelProperty(value = "")
-
-@DecimalMin("67.8") @DecimalMax("123.4") 
   public Double getDouble() {
     return _double;
   }
@@ -209,9 +206,8 @@ public class FormatTest   {
    * Get string
    * @return string
   */
+  @Pattern(regexp = "/[a-z]/i") 
   @ApiModelProperty(value = "")
-
-@Pattern(regexp = "/[a-z]/i") 
   public String getString() {
     return string;
   }
@@ -229,10 +225,8 @@ public class FormatTest   {
    * Get _byte
    * @return _byte
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public byte[] getByte() {
     return _byte;
   }
@@ -241,7 +235,7 @@ public class FormatTest   {
     this._byte = _byte;
   }
 
-  public FormatTest binary(org.springframework.core.io.Resource binary) {
+  public FormatTest binary(Resource binary) {
     this.binary = binary;
     return this;
   }
@@ -250,15 +244,13 @@ public class FormatTest   {
    * Get binary
    * @return binary
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
-  public org.springframework.core.io.Resource getBinary() {
+  public Resource getBinary() {
     return binary;
   }
 
-  public void setBinary(org.springframework.core.io.Resource binary) {
+  public void setBinary(Resource binary) {
     this.binary = binary;
   }
 
@@ -271,11 +263,8 @@ public class FormatTest   {
    * Get date
    * @return date
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public LocalDate getDate() {
     return date;
   }
@@ -293,10 +282,8 @@ public class FormatTest   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -314,10 +301,8 @@ public class FormatTest   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(example = "72f98069-206d-4f12-9f12-3d1e525a8e84", value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -335,10 +320,8 @@ public class FormatTest   {
    * Get password
    * @return password
   */
+  @NotNull @Size(min = 10, max = 64) 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-@Size(min = 10, max = 64) 
   public String getPassword() {
     return password;
   }
@@ -356,10 +339,8 @@ public class FormatTest   {
    * Get bigDecimal
    * @return bigDecimal
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getBigDecimal() {
     return bigDecimal;
   }
@@ -368,7 +349,6 @@ public class FormatTest   {
     this.bigDecimal = bigDecimal;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -403,7 +383,6 @@ public class FormatTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class FormatTest {\n");
-    
     sb.append("    integer: ").append(toIndentedString(integer)).append("\n");
     sb.append("    int32: ").append(toIndentedString(int32)).append("\n");
     sb.append("    int64: ").append(toIndentedString(int64)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/HasOnlyReadOnly.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
index 10e514bb172..2b64dcf5f9d 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/HasOnlyReadOnly.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * HasOnlyReadOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class HasOnlyReadOnly   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class HasOnlyReadOnly   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class HasOnlyReadOnly   {
    * Get foo
    * @return foo
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getFoo() {
     return foo;
   }
@@ -65,7 +66,6 @@ public class HasOnlyReadOnly   {
     this.foo = foo;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class HasOnlyReadOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class HasOnlyReadOnly {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    foo: ").append(toIndentedString(foo)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MapTest.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MapTest.java
index 36754fec8c9..27e3cea8e6e 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MapTest.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MapTest.java
@@ -17,12 +17,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MapTest
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MapTest   {
+
   @JsonProperty("map_map_of_string")
   @Valid
   private Map<String, Map<String, String>> mapMapOfString = null;
@@ -91,10 +94,8 @@ public class MapTest   {
    * Get mapMapOfString
    * @return mapMapOfString
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Map<String, String>> getMapMapOfString() {
     return mapMapOfString;
   }
@@ -120,9 +121,8 @@ public class MapTest   {
    * Get mapOfEnumString
    * @return mapOfEnumString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, InnerEnum> getMapOfEnumString() {
     return mapOfEnumString;
   }
@@ -148,9 +148,8 @@ public class MapTest   {
    * Get directMap
    * @return directMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getDirectMap() {
     return directMap;
   }
@@ -176,9 +175,8 @@ public class MapTest   {
    * Get indirectMap
    * @return indirectMap
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Map<String, Boolean> getIndirectMap() {
     return indirectMap;
   }
@@ -187,7 +185,6 @@ public class MapTest   {
     this.indirectMap = indirectMap;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -212,7 +209,6 @@ public class MapTest   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MapTest {\n");
-    
     sb.append("    mapMapOfString: ").append(toIndentedString(mapMapOfString)).append("\n");
     sb.append("    mapOfEnumString: ").append(toIndentedString(mapOfEnumString)).append("\n");
     sb.append("    directMap: ").append(toIndentedString(directMap)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
index 8238e3227a6..e490e2a61ef 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/MixedPropertiesAndAdditionalPropertiesClass.java
@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 import org.openapitools.model.Animal;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -19,17 +20,20 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * MixedPropertiesAndAdditionalPropertiesClass
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class MixedPropertiesAndAdditionalPropertiesClass   {
+
   @JsonProperty("uuid")
   private UUID uuid;
 
   @JsonProperty("dateTime")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime dateTime;
 
   @JsonProperty("map")
@@ -45,10 +49,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get uuid
    * @return uuid
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public UUID getUuid() {
     return uuid;
   }
@@ -66,10 +68,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get dateTime
    * @return dateTime
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getDateTime() {
     return dateTime;
   }
@@ -95,10 +95,8 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
    * Get map
    * @return map
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Map<String, Animal> getMap() {
     return map;
   }
@@ -107,7 +105,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
     this.map = map;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -131,7 +128,6 @@ public class MixedPropertiesAndAdditionalPropertiesClass   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class MixedPropertiesAndAdditionalPropertiesClass {\n");
-    
     sb.append("    uuid: ").append(toIndentedString(uuid)).append("\n");
     sb.append("    dateTime: ").append(toIndentedString(dateTime)).append("\n");
     sb.append("    map: ").append(toIndentedString(map)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Model200Response.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Model200Response.java
index 3f8bdc54450..89575c6bad3 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Model200Response.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Model200Response.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name starting with number
  */
+
 @ApiModel(description = "Model for testing model name starting with number")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Model200Response   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -35,9 +38,8 @@ public class Model200Response   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getName() {
     return name;
   }
@@ -55,9 +57,8 @@ public class Model200Response   {
    * Get propertyClass
    * @return propertyClass
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPropertyClass() {
     return propertyClass;
   }
@@ -66,7 +67,6 @@ public class Model200Response   {
     this.propertyClass = propertyClass;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -89,7 +89,6 @@ public class Model200Response   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Model200Response {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    propertyClass: ").append(toIndentedString(propertyClass)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java
index 99a06748ac1..98f2d63bf77 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelApiResponse.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ModelApiResponse
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelApiResponse   {
+
   @JsonProperty("code")
   private Integer code;
 
@@ -37,9 +40,8 @@ public class ModelApiResponse   {
    * Get code
    * @return code
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getCode() {
     return code;
   }
@@ -57,9 +59,8 @@ public class ModelApiResponse   {
    * Get type
    * @return type
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getType() {
     return type;
   }
@@ -77,9 +78,8 @@ public class ModelApiResponse   {
    * Get message
    * @return message
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMessage() {
     return message;
   }
@@ -88,7 +88,6 @@ public class ModelApiResponse   {
     this.message = message;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -112,7 +111,6 @@ public class ModelApiResponse   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelApiResponse {\n");
-    
     sb.append("    code: ").append(toIndentedString(code)).append("\n");
     sb.append("    type: ").append(toIndentedString(type)).append("\n");
     sb.append("    message: ").append(toIndentedString(message)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelFile.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelFile.java
new file mode 100644
index 00000000000..d61b764d4be
--- /dev/null
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelFile.java
@@ -0,0 +1,85 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+
+/**
+ * Must be named &#x60;File&#x60; for test.
+ */
+@ApiModel(description = "Must be named `File` for test.")
+@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelFile   {
+  @JsonProperty("sourceURI")
+  private String sourceURI;
+
+  public ModelFile sourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+    return this;
+  }
+
+  /**
+   * Test capitalization
+   * @return sourceURI
+  */
+  @ApiModelProperty(value = "Test capitalization")
+
+
+  public String getSourceURI() {
+    return sourceURI;
+  }
+
+  public void setSourceURI(String sourceURI) {
+    this.sourceURI = sourceURI;
+  }
+
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelFile _file = (ModelFile) o;
+    return Objects.equals(this.sourceURI, _file.sourceURI);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(sourceURI);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelFile {\n");
+    
+    sb.append("    sourceURI: ").append(toIndentedString(sourceURI)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelList.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelList.java
new file mode 100644
index 00000000000..6b5e61562ad
--- /dev/null
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelList.java
@@ -0,0 +1,84 @@
+package org.openapitools.model;
+
+import java.net.URI;
+import java.util.Objects;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import org.openapitools.jackson.nullable.JsonNullable;
+import java.time.OffsetDateTime;
+import javax.validation.Valid;
+import javax.validation.constraints.*;
+
+
+import java.util.*;
+import javax.annotation.Generated;
+
+/**
+ * ModelList
+ */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+public class ModelList   {
+
+  @JsonProperty("123-list")
+  private String _123list;
+
+  public ModelList _123list(String _123list) {
+    this._123list = _123list;
+    return this;
+  }
+
+  /**
+   * Get _123list
+   * @return _123list
+  */
+  
+  @ApiModelProperty(value = "")
+  public String get123list() {
+    return _123list;
+  }
+
+  public void set123list(String _123list) {
+    this._123list = _123list;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ModelList _list = (ModelList) o;
+    return Objects.equals(this._123list, _list._123list);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(_123list);
+  }
+
+  @Override
+  public String toString() {
+    StringBuilder sb = new StringBuilder();
+    sb.append("class ModelList {\n");
+    sb.append("    _123list: ").append(toIndentedString(_123list)).append("\n");
+    sb.append("}");
+    return sb.toString();
+  }
+
+  /**
+   * Convert the given object to string with each line indented by 4 spaces
+   * (except the first line).
+   */
+  private String toIndentedString(Object o) {
+    if (o == null) {
+      return "null";
+    }
+    return o.toString().replace("\n", "\n    ");
+  }
+}
+
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelReturn.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelReturn.java
index d9cc6193aee..84b54d38a08 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelReturn.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ModelReturn.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing reserved words
  */
+
 @ApiModel(description = "Model for testing reserved words")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ModelReturn   {
+
   @JsonProperty("return")
   private Integer _return;
 
@@ -32,9 +35,8 @@ public class ModelReturn   {
    * Get _return
    * @return _return
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getReturn() {
     return _return;
   }
@@ -43,7 +45,6 @@ public class ModelReturn   {
     this._return = _return;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -65,7 +66,6 @@ public class ModelReturn   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ModelReturn {\n");
-    
     sb.append("    _return: ").append(toIndentedString(_return)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Name.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Name.java
index 880351d2843..febe2115a66 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Name.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Name.java
@@ -13,13 +13,16 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Model for testing model name same as property name
  */
+
 @ApiModel(description = "Model for testing model name same as property name")
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Name   {
+
   @JsonProperty("name")
   private Integer name;
 
@@ -41,10 +44,8 @@ public class Name   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getName() {
     return name;
   }
@@ -62,9 +63,8 @@ public class Name   {
    * Get snakeCase
    * @return snakeCase
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer getSnakeCase() {
     return snakeCase;
   }
@@ -82,9 +82,8 @@ public class Name   {
    * Get property
    * @return property
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getProperty() {
     return property;
   }
@@ -102,9 +101,8 @@ public class Name   {
    * Get _123number
    * @return _123number
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public Integer get123number() {
     return _123number;
   }
@@ -113,7 +111,6 @@ public class Name   {
     this._123number = _123number;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -138,7 +135,6 @@ public class Name   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Name {\n");
-    
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("    snakeCase: ").append(toIndentedString(snakeCase)).append("\n");
     sb.append("    property: ").append(toIndentedString(property)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/NumberOnly.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/NumberOnly.java
index 4af42224ae5..dcf5c5e801a 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/NumberOnly.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/NumberOnly.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * NumberOnly
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class NumberOnly   {
+
   @JsonProperty("JustNumber")
   private BigDecimal justNumber;
 
@@ -32,10 +35,8 @@ public class NumberOnly   {
    * Get justNumber
    * @return justNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getJustNumber() {
     return justNumber;
   }
@@ -44,7 +45,6 @@ public class NumberOnly   {
     this.justNumber = justNumber;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -66,7 +66,6 @@ public class NumberOnly   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class NumberOnly {\n");
-    
     sb.append("    justNumber: ").append(toIndentedString(justNumber)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java
index ba0b3b2e313..6bd55e5a154 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Order.java
@@ -8,6 +8,7 @@ import com.fasterxml.jackson.annotation.JsonValue;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import java.time.OffsetDateTime;
+import org.springframework.format.annotation.DateTimeFormat;
 import org.openapitools.jackson.nullable.JsonNullable;
 import java.time.OffsetDateTime;
 import javax.validation.Valid;
@@ -15,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Order
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Order   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -31,7 +35,7 @@ public class Order   {
   private Integer quantity;
 
   @JsonProperty("shipDate")
-  @org.springframework.format.annotation.DateTimeFormat(iso = org.springframework.format.annotation.DateTimeFormat.ISO.DATE_TIME)
+  @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
   private OffsetDateTime shipDate;
 
   /**
@@ -86,9 +90,8 @@ public class Order   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -106,9 +109,8 @@ public class Order   {
    * Get petId
    * @return petId
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getPetId() {
     return petId;
   }
@@ -126,9 +128,8 @@ public class Order   {
    * Get quantity
    * @return quantity
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Integer getQuantity() {
     return quantity;
   }
@@ -146,10 +147,8 @@ public class Order   {
    * Get shipDate
    * @return shipDate
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public OffsetDateTime getShipDate() {
     return shipDate;
   }
@@ -167,9 +166,8 @@ public class Order   {
    * Order Status
    * @return status
   */
+  
   @ApiModelProperty(value = "Order Status")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -187,9 +185,8 @@ public class Order   {
    * Get complete
    * @return complete
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getComplete() {
     return complete;
   }
@@ -198,7 +195,6 @@ public class Order   {
     this.complete = complete;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -225,7 +221,6 @@ public class Order   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Order {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    petId: ").append(toIndentedString(petId)).append("\n");
     sb.append("    quantity: ").append(toIndentedString(quantity)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterComposite.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterComposite.java
index cdac99f37e4..eca5e7cd4fa 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterComposite.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterComposite.java
@@ -14,12 +14,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * OuterComposite
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class OuterComposite   {
+
   @JsonProperty("my_number")
   private BigDecimal myNumber;
 
@@ -38,10 +41,8 @@ public class OuterComposite   {
    * Get myNumber
    * @return myNumber
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public BigDecimal getMyNumber() {
     return myNumber;
   }
@@ -59,9 +60,8 @@ public class OuterComposite   {
    * Get myString
    * @return myString
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getMyString() {
     return myString;
   }
@@ -79,9 +79,8 @@ public class OuterComposite   {
    * Get myBoolean
    * @return myBoolean
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Boolean getMyBoolean() {
     return myBoolean;
   }
@@ -90,7 +89,6 @@ public class OuterComposite   {
     this.myBoolean = myBoolean;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -114,7 +112,6 @@ public class OuterComposite   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class OuterComposite {\n");
-    
     sb.append("    myNumber: ").append(toIndentedString(myNumber)).append("\n");
     sb.append("    myString: ").append(toIndentedString(myString)).append("\n");
     sb.append("    myBoolean: ").append(toIndentedString(myBoolean)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterEnum.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterEnum.java
index d74006b9d33..1f09d0a5d17 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterEnum.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/OuterEnum.java
@@ -10,6 +10,7 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
@@ -17,6 +18,8 @@ import com.fasterxml.jackson.annotation.JsonValue;
 /**
  * Gets or Sets OuterEnum
  */
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public enum OuterEnum {
   
   PLACED("placed"),
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java
index 9aa5cb53c51..9f17ad305da 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Pet.java
@@ -21,12 +21,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Pet
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Pet   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -93,9 +96,8 @@ public class Pet   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -113,10 +115,8 @@ public class Pet   {
    * Get category
    * @return category
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public Category getCategory() {
     return category;
   }
@@ -134,10 +134,8 @@ public class Pet   {
    * Get name
    * @return name
   */
+  @NotNull 
   @ApiModelProperty(example = "doggie", required = true, value = "")
-  @NotNull
-
-
   public String getName() {
     return name;
   }
@@ -160,10 +158,8 @@ public class Pet   {
    * Get photoUrls
    * @return photoUrls
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Set<String> getPhotoUrls() {
     return photoUrls;
   }
@@ -190,10 +186,8 @@ public class Pet   {
    * Get tags
    * @return tags
   */
+  @Valid 
   @ApiModelProperty(value = "")
-
-  @Valid
-
   public List<Tag> getTags() {
     return tags;
   }
@@ -211,9 +205,8 @@ public class Pet   {
    * pet status in the store
    * @return status
   */
+  
   @ApiModelProperty(value = "pet status in the store")
-
-
   public StatusEnum getStatus() {
     return status;
   }
@@ -222,7 +215,6 @@ public class Pet   {
     this.status = status;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -249,7 +241,6 @@ public class Pet   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Pet {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    category: ").append(toIndentedString(category)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ReadOnlyFirst.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ReadOnlyFirst.java
index f872289b8da..e2ddfcdfcb1 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ReadOnlyFirst.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/ReadOnlyFirst.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * ReadOnlyFirst
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class ReadOnlyFirst   {
+
   @JsonProperty("bar")
   private String bar;
 
@@ -34,9 +37,8 @@ public class ReadOnlyFirst   {
    * Get bar
    * @return bar
   */
+  
   @ApiModelProperty(readOnly = true, value = "")
-
-
   public String getBar() {
     return bar;
   }
@@ -54,9 +56,8 @@ public class ReadOnlyFirst   {
    * Get baz
    * @return baz
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getBaz() {
     return baz;
   }
@@ -65,7 +66,6 @@ public class ReadOnlyFirst   {
     this.baz = baz;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class ReadOnlyFirst   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class ReadOnlyFirst {\n");
-    
     sb.append("    bar: ").append(toIndentedString(bar)).append("\n");
     sb.append("    baz: ").append(toIndentedString(baz)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/SpecialModelName.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/SpecialModelName.java
index 31cc434cd51..effca9c97da 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/SpecialModelName.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/SpecialModelName.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * SpecialModelName
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class SpecialModelName   {
+
   @JsonProperty("$special[property.name]")
   private Long $specialPropertyName;
 
@@ -31,9 +34,8 @@ public class SpecialModelName   {
    * Get $specialPropertyName
    * @return $specialPropertyName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long get$SpecialPropertyName() {
     return $specialPropertyName;
   }
@@ -42,7 +44,6 @@ public class SpecialModelName   {
     this.$specialPropertyName = $specialPropertyName;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -64,7 +65,6 @@ public class SpecialModelName   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class SpecialModelName {\n");
-    
     sb.append("    $specialPropertyName: ").append(toIndentedString($specialPropertyName)).append("\n");
     sb.append("}");
     return sb.toString();
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java
index 2d1ac94412f..03b4ffcdadc 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/Tag.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * Tag
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class Tag   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -34,9 +37,8 @@ public class Tag   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -54,9 +56,8 @@ public class Tag   {
    * Get name
    * @return name
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getName() {
     return name;
   }
@@ -65,7 +66,6 @@ public class Tag   {
     this.name = name;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -88,7 +88,6 @@ public class Tag   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class Tag {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    name: ").append(toIndentedString(name)).append("\n");
     sb.append("}");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderDefault.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderDefault.java
index fb29f038fc6..01e5d5f3fcc 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderDefault.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderDefault.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderDefault
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderDefault   {
+
   @JsonProperty("string_item")
   private String stringItem = "what";
 
@@ -47,10 +50,8 @@ public class TypeHolderDefault   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -68,11 +69,8 @@ public class TypeHolderDefault   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -90,10 +88,8 @@ public class TypeHolderDefault   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -111,10 +107,8 @@ public class TypeHolderDefault   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -137,10 +131,8 @@ public class TypeHolderDefault   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -149,7 +141,6 @@ public class TypeHolderDefault   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -175,7 +166,6 @@ public class TypeHolderDefault   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderDefault {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    integerItem: ").append(toIndentedString(integerItem)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderExample.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderExample.java
index 096b4ada099..e907ad9c28e 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderExample.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/TypeHolderExample.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * TypeHolderExample
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class TypeHolderExample   {
+
   @JsonProperty("string_item")
   private String stringItem;
 
@@ -50,10 +53,8 @@ public class TypeHolderExample   {
    * Get stringItem
    * @return stringItem
   */
+  @NotNull 
   @ApiModelProperty(example = "what", required = true, value = "")
-  @NotNull
-
-
   public String getStringItem() {
     return stringItem;
   }
@@ -71,11 +72,8 @@ public class TypeHolderExample   {
    * Get numberItem
    * @return numberItem
   */
+  @NotNull @Valid 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-  @Valid
-
   public BigDecimal getNumberItem() {
     return numberItem;
   }
@@ -93,10 +91,8 @@ public class TypeHolderExample   {
    * Get floatItem
    * @return floatItem
   */
+  @NotNull 
   @ApiModelProperty(example = "1.234", required = true, value = "")
-  @NotNull
-
-
   public Float getFloatItem() {
     return floatItem;
   }
@@ -114,10 +110,8 @@ public class TypeHolderExample   {
    * Get integerItem
    * @return integerItem
   */
+  @NotNull 
   @ApiModelProperty(example = "-2", required = true, value = "")
-  @NotNull
-
-
   public Integer getIntegerItem() {
     return integerItem;
   }
@@ -135,10 +129,8 @@ public class TypeHolderExample   {
    * Get boolItem
    * @return boolItem
   */
+  @NotNull 
   @ApiModelProperty(example = "true", required = true, value = "")
-  @NotNull
-
-
   public Boolean getBoolItem() {
     return boolItem;
   }
@@ -161,10 +153,8 @@ public class TypeHolderExample   {
    * Get arrayItem
    * @return arrayItem
   */
+  @NotNull 
   @ApiModelProperty(example = "[0, 1, 2, 3]", required = true, value = "")
-  @NotNull
-
-
   public List<Integer> getArrayItem() {
     return arrayItem;
   }
@@ -173,7 +163,6 @@ public class TypeHolderExample   {
     this.arrayItem = arrayItem;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -200,7 +189,6 @@ public class TypeHolderExample   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class TypeHolderExample {\n");
-    
     sb.append("    stringItem: ").append(toIndentedString(stringItem)).append("\n");
     sb.append("    numberItem: ").append(toIndentedString(numberItem)).append("\n");
     sb.append("    floatItem: ").append(toIndentedString(floatItem)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/User.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/User.java
index 3cadd5d4ec5..cff62427bf1 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/User.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/User.java
@@ -13,12 +13,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * User
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class User   {
+
   @JsonProperty("id")
   private Long id;
 
@@ -52,9 +55,8 @@ public class User   {
    * Get id
    * @return id
   */
+  
   @ApiModelProperty(value = "")
-
-
   public Long getId() {
     return id;
   }
@@ -72,9 +74,8 @@ public class User   {
    * Get username
    * @return username
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getUsername() {
     return username;
   }
@@ -92,9 +93,8 @@ public class User   {
    * Get firstName
    * @return firstName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getFirstName() {
     return firstName;
   }
@@ -112,9 +112,8 @@ public class User   {
    * Get lastName
    * @return lastName
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getLastName() {
     return lastName;
   }
@@ -132,9 +131,8 @@ public class User   {
    * Get email
    * @return email
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getEmail() {
     return email;
   }
@@ -152,9 +150,8 @@ public class User   {
    * Get password
    * @return password
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPassword() {
     return password;
   }
@@ -172,9 +169,8 @@ public class User   {
    * Get phone
    * @return phone
   */
+  
   @ApiModelProperty(value = "")
-
-
   public String getPhone() {
     return phone;
   }
@@ -192,9 +188,8 @@ public class User   {
    * User Status
    * @return userStatus
   */
+  
   @ApiModelProperty(value = "User Status")
-
-
   public Integer getUserStatus() {
     return userStatus;
   }
@@ -203,7 +198,6 @@ public class User   {
     this.userStatus = userStatus;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -232,7 +226,6 @@ public class User   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class User {\n");
-    
     sb.append("    id: ").append(toIndentedString(id)).append("\n");
     sb.append("    username: ").append(toIndentedString(username)).append("\n");
     sb.append("    firstName: ").append(toIndentedString(firstName)).append("\n");
diff --git a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/XmlItem.java b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/XmlItem.java
index 62cfbcc6b28..930edebcef7 100644
--- a/samples/server/petstore/springboot/src/main/java/org/openapitools/model/XmlItem.java
+++ b/samples/server/petstore/springboot/src/main/java/org/openapitools/model/XmlItem.java
@@ -16,12 +16,15 @@ import javax.validation.constraints.*;
 
 
 import java.util.*;
+import javax.annotation.Generated;
 
 /**
  * XmlItem
  */
-@javax.annotation.Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
+
+@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
 public class XmlItem   {
+
   @JsonProperty("attribute_string")
   private String attributeString;
 
@@ -127,9 +130,8 @@ public class XmlItem   {
    * Get attributeString
    * @return attributeString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getAttributeString() {
     return attributeString;
   }
@@ -147,10 +149,8 @@ public class XmlItem   {
    * Get attributeNumber
    * @return attributeNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getAttributeNumber() {
     return attributeNumber;
   }
@@ -168,9 +168,8 @@ public class XmlItem   {
    * Get attributeInteger
    * @return attributeInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getAttributeInteger() {
     return attributeInteger;
   }
@@ -188,9 +187,8 @@ public class XmlItem   {
    * Get attributeBoolean
    * @return attributeBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getAttributeBoolean() {
     return attributeBoolean;
   }
@@ -216,9 +214,8 @@ public class XmlItem   {
    * Get wrappedArray
    * @return wrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getWrappedArray() {
     return wrappedArray;
   }
@@ -236,9 +233,8 @@ public class XmlItem   {
    * Get nameString
    * @return nameString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNameString() {
     return nameString;
   }
@@ -256,10 +252,8 @@ public class XmlItem   {
    * Get nameNumber
    * @return nameNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNameNumber() {
     return nameNumber;
   }
@@ -277,9 +271,8 @@ public class XmlItem   {
    * Get nameInteger
    * @return nameInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNameInteger() {
     return nameInteger;
   }
@@ -297,9 +290,8 @@ public class XmlItem   {
    * Get nameBoolean
    * @return nameBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNameBoolean() {
     return nameBoolean;
   }
@@ -325,9 +317,8 @@ public class XmlItem   {
    * Get nameArray
    * @return nameArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameArray() {
     return nameArray;
   }
@@ -353,9 +344,8 @@ public class XmlItem   {
    * Get nameWrappedArray
    * @return nameWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNameWrappedArray() {
     return nameWrappedArray;
   }
@@ -373,9 +363,8 @@ public class XmlItem   {
    * Get prefixString
    * @return prefixString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixString() {
     return prefixString;
   }
@@ -393,10 +382,8 @@ public class XmlItem   {
    * Get prefixNumber
    * @return prefixNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNumber() {
     return prefixNumber;
   }
@@ -414,9 +401,8 @@ public class XmlItem   {
    * Get prefixInteger
    * @return prefixInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixInteger() {
     return prefixInteger;
   }
@@ -434,9 +420,8 @@ public class XmlItem   {
    * Get prefixBoolean
    * @return prefixBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixBoolean() {
     return prefixBoolean;
   }
@@ -462,9 +447,8 @@ public class XmlItem   {
    * Get prefixArray
    * @return prefixArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixArray() {
     return prefixArray;
   }
@@ -490,9 +474,8 @@ public class XmlItem   {
    * Get prefixWrappedArray
    * @return prefixWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixWrappedArray() {
     return prefixWrappedArray;
   }
@@ -510,9 +493,8 @@ public class XmlItem   {
    * Get namespaceString
    * @return namespaceString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getNamespaceString() {
     return namespaceString;
   }
@@ -530,10 +512,8 @@ public class XmlItem   {
    * Get namespaceNumber
    * @return namespaceNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getNamespaceNumber() {
     return namespaceNumber;
   }
@@ -551,9 +531,8 @@ public class XmlItem   {
    * Get namespaceInteger
    * @return namespaceInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getNamespaceInteger() {
     return namespaceInteger;
   }
@@ -571,9 +550,8 @@ public class XmlItem   {
    * Get namespaceBoolean
    * @return namespaceBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getNamespaceBoolean() {
     return namespaceBoolean;
   }
@@ -599,9 +577,8 @@ public class XmlItem   {
    * Get namespaceArray
    * @return namespaceArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceArray() {
     return namespaceArray;
   }
@@ -627,9 +604,8 @@ public class XmlItem   {
    * Get namespaceWrappedArray
    * @return namespaceWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getNamespaceWrappedArray() {
     return namespaceWrappedArray;
   }
@@ -647,9 +623,8 @@ public class XmlItem   {
    * Get prefixNsString
    * @return prefixNsString
   */
+  
   @ApiModelProperty(example = "string", value = "")
-
-
   public String getPrefixNsString() {
     return prefixNsString;
   }
@@ -667,10 +642,8 @@ public class XmlItem   {
    * Get prefixNsNumber
    * @return prefixNsNumber
   */
+  @Valid 
   @ApiModelProperty(example = "1.234", value = "")
-
-  @Valid
-
   public BigDecimal getPrefixNsNumber() {
     return prefixNsNumber;
   }
@@ -688,9 +661,8 @@ public class XmlItem   {
    * Get prefixNsInteger
    * @return prefixNsInteger
   */
+  
   @ApiModelProperty(example = "-2", value = "")
-
-
   public Integer getPrefixNsInteger() {
     return prefixNsInteger;
   }
@@ -708,9 +680,8 @@ public class XmlItem   {
    * Get prefixNsBoolean
    * @return prefixNsBoolean
   */
+  
   @ApiModelProperty(example = "true", value = "")
-
-
   public Boolean getPrefixNsBoolean() {
     return prefixNsBoolean;
   }
@@ -736,9 +707,8 @@ public class XmlItem   {
    * Get prefixNsArray
    * @return prefixNsArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsArray() {
     return prefixNsArray;
   }
@@ -764,9 +734,8 @@ public class XmlItem   {
    * Get prefixNsWrappedArray
    * @return prefixNsWrappedArray
   */
+  
   @ApiModelProperty(value = "")
-
-
   public List<Integer> getPrefixNsWrappedArray() {
     return prefixNsWrappedArray;
   }
@@ -775,7 +744,6 @@ public class XmlItem   {
     this.prefixNsWrappedArray = prefixNsWrappedArray;
   }
 
-
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -825,7 +793,6 @@ public class XmlItem   {
   public String toString() {
     StringBuilder sb = new StringBuilder();
     sb.append("class XmlItem {\n");
-    
     sb.append("    attributeString: ").append(toIndentedString(attributeString)).append("\n");
     sb.append("    attributeNumber: ").append(toIndentedString(attributeNumber)).append("\n");
     sb.append("    attributeInteger: ").append(toIndentedString(attributeInteger)).append("\n");
diff --git a/website/src/dynamic/users.yml b/website/src/dynamic/users.yml
index 6c8d8667df5..59c93067b4d 100644
--- a/website/src/dynamic/users.yml
+++ b/website/src/dynamic/users.yml
@@ -48,6 +48,11 @@
   image: "img/companies/b-com.png"
   infoLink: "https://b-com.com/en"
   pinned: false
+-
+  caption: "百度营销"
+  image: "img/companies/ebaidu.jpeg"
+  infoLink: "https://e.baidu.com"
+  pinned: false
 -
   caption: "Banzai Cloud"
   image: "img/companies/banzai_cloud.png"
diff --git a/website/static/img/companies/ebaidu.jpeg b/website/static/img/companies/ebaidu.jpeg
new file mode 100644
index 00000000000..9b7f305b66b
Binary files /dev/null and b/website/static/img/companies/ebaidu.jpeg differ
diff --git a/website/yarn.lock b/website/yarn.lock
index 23846922dea..15489b0fce1 100644
--- a/website/yarn.lock
+++ b/website/yarn.lock
@@ -2944,7 +2944,7 @@ debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.0, debug@^2.6.9:
   dependencies:
     ms "2.0.0"
 
-debug@^3.0.0, debug@^3.1.1, debug@^3.2.5, debug@^3.2.6:
+debug@^3.1.1, debug@^3.2.5, debug@^3.2.6:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   integrity sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==
@@ -3815,11 +3815,9 @@ flush-write-stream@^1.0.0:
     readable-stream "^2.3.6"
 
 follow-redirects@^1.0.0:
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.10.0.tgz#01f5263aee921c6a54fb91667f08f4155ce169eb"
-  integrity sha512-4eyLK6s6lH32nOvLLwlIOnr9zrL8Sm+OvW4pVTJNoXeGzYIkHVf+pADQi+OJ0E67hiuSLezPVPyBcIZO50TmmQ==
-  dependencies:
-    debug "^3.0.0"
+  version "1.14.7"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.14.7.tgz#2004c02eb9436eee9a21446a6477debf17e81685"
+  integrity sha512-+hbxoLbFMbRKDwohX8GkTataGqO6Jb7jGwpAlwgy2bIz25XtRm7KEzJM76R1WiNT5SwZkX4Y75SwBolkpmE7iQ==
 
 for-in@^1.0.2:
   version "1.0.2"